stm: laser: STM laser sensor driver.

Add STM laser sensor driver to configure and access laser data using
i2c and cci configuration.

This is a squash of the following commits from
https://github.com/STFlightSenseLinuxDrivers/vl53l0-driver:
        commit ee84aaad0cc1b7b195dcade15b201829dd87d537
        Author: Kalyan Vadlamudi <kalyan-kumar.vadlamudireddy@st.com>
        Date:   Wed Jan 11 09:27:48 2017 -0800

            STM Laser: Remove Proprietary License header in vl53l0_i2c_platform.c.
            Description: vl53l0_i2c_platform.c mentions Proprietary/Confidential information. Remove this and

        commit 3355587f03c25fbdd7febd68172d3d4339762665
        Author: Kalyan Vadlamudi <kalyan-kumar.vadlamudireddy@st.com>
        Date:   Thu Dec 8 15:11:32 2016 -0800

            STM Laser: Fix compliation issue in stmvl53l0_module-cci.c.
            Description: Missing ending brace in stmvl53l0_cci_init() for the cci_client->cci_subdev check

        commit f85423250c4df248c15ffeddf35ec43d01751793
        Author: Kalyan Vadlamudi <kalyan-kumar.vadlamudireddy@st.com>
        Date:   Thu Nov 3 16:55:33 2016 -0700

            STM Laser: Fix checkpatch warnings and errors.
            Description: Use checkpatch script from 4.4 kernel and fix the errors and errors. There are still few typedef related warning in the header files

        commit 6b3796838d66acb6dbcbdf004b554468f3dc1218
        Author: Kalyan Vadlamudi <kalyan-kumar.vadlamudireddy@st.com>
        Date:   Tue Aug 16 17:50:44 2016 -0700

            STM Laser : Fix Laser initialization failure
            Description : Revert the code which powers up Laser device during module init time. CCI probe can happen after STM laser driver probe,
            which is causing issues during device initialization. Code has been modified to not power up the device during STM laser driver probe.

        commit 93b6897a2a8c6828169c2501690df7cccf8221c6
        Author: Kalyan Vadlamudi <kalyan-kumar.vadlamudireddy@st.com>
        Date:   Tue Aug 2 10:38:23 2016 -0700

            Set Default build to USE_CCI

        commit 357b47b5d809334e8e7bdcad73950ac2bf817043
        Author: Kalyan Vadlamudi <kalyan-kumar.vadlamudireddy@st.com>
        Date:   Mon Aug 1 14:27:24 2016 -0700

            Update stmvl53l0-cci.h with new fields in cci_data

        commit 95d072e03e5724445aba17c3a055c1518be9fc7e
        Author: Kalyan Vadlamudi <kalyan-kumar.vadlamudireddy@st.com>
        Date:   Mon Aug 1 13:55:29 2016 -0700

            Add support in CCI driver to read device tree files for gpios information and configure them if present.
            Power up the device before calling stmvl53l0_setupAPIFunctions

        commit 1a86a1fcfbbd55059a243588fde8691e1f9ae106
        Author: Kalyan Vadlamudi <kalyan-kumar.vadlamudireddy@st.com>
        Date:   Thu Jul 21 14:05:09 2016 -0700

            first commit

CRs-fixed: 1051771
Change-Id: I47d33f99e264d17549b0d0de174462796cf61978
Git-repo: https://github.com/STFlightSenseLinuxDrivers/vl53l0-driver
Git-commit: 1a86a1fcfbbd55059a243588fde8691e1f9ae106
Git-commit: 95d072e03e5724445aba17c3a055c1518be9fc7e
Git-commit: 357b47b5d809334e8e7bdcad73950ac2bf817043
Git-commit: 93b6897a2a8c6828169c2501690df7cccf8221c6
Git-commit: 6b3796838d66acb6dbcbdf004b554468f3dc1218
Git-commit: f85423250c4df248c15ffeddf35ec43d01751793
Git-commit: 3355587f03c25fbdd7febd68172d3d4339762665
Git-commit: ee84aaad0cc1b7b195dcade15b201829dd87d537
[bgurung@codeaurora.org: removed license and readme text files. Also removed executable permissions from files.]
Signed-off-by: Bikas Gurung <bgurung@codeaurora.org>

36 files changed, 23533 insertions, 0 deletions

diff --git a/drivers/input/misc/vl53L0/Makefile b/drivers/input/misc/vl53L0/Makefile
new file mode 100644
index 000000000000..4a6be55094b6
--- /dev/null
+++ b/drivers/input/misc/vl53L0/Makefile
@@ -0,0 +1,20 @@
+#
+# Makefile for the vl53L0 drivers.
+#
+
+# Each configuration option enables a list of files.
+#FEATURE_USE_CCI := false
+FEATURE_USE_CCI := true
+
+ifeq ($(FEATURE_USE_CCI), true)
+ccflags-y	+= -Idrivers/input/misc/vl53L0/inc -DCAMERA_CCI
+else
+ccflags-y	+= -Idrivers/input/misc/vl53L0/inc 
+endif
+
+ccflags-y += -Idrivers/media/platform/msm/camera_v2/sensor/io
+ccflags-y += -Idrivers/media/platform/msm/camera_v2
+ccflags-y += -Idrivers/media/platform/msm/camera_v2/common
+ccflags-y += -Idrivers/media/platform/msm/camera_v2/sensor/cci
+obj-$(CONFIG_STMVL53L0)			+= stmvl53l0.o
+stmvl53l0-objs				:= stmvl53l0_module.o stmvl53l0_module-i2c.o stmvl53l0_module-cci.o src/vl53l0_api_calibration.o src/vl53l0_api_core.o src/vl53l0_api_histogram.o src/vl53l0_api_ranging.o src/vl53l0_api_strings.o src/vl53l0_api.o src/vl53l0_platform.o src/vl53l0_i2c_platform.o src/vl53l0_port_i2c.o src/vl53l010_api.o src/vl53l010_tuning.o
diff --git a/drivers/input/misc/vl53L0/inc/vl53l010_api.h b/drivers/input/misc/vl53L0/inc/vl53l010_api.h
new file mode 100644
index 000000000000..282c65e33a93
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l010_api.h
@@ -0,0 +1,1476 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+/*
+ * @file vl53l0_api.h
+ * $Date: 2014-12-04 16:15:06 +0100 (Thu, 04 Dec 2014) $
+ * Revision: 1906
+ */
+
+
+
+#ifndef _VL53L010_API_H_
+#define _VL53L010_API_H_
+
+#include "vl53l010_device.h"
+#include "vl53l010_strings.h"
+#include "vl53l0_def.h"
+#include "vl53l0_platform.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef _MSC_VER
+#   ifdef VL53L0_API_EXPORTS
+#       define VL53L010_API  __declspec(dllexport)
+#   else
+#       define VL53L010_API
+#   endif
+#else
+#   define VL53L010_API
+#endif
+
+
+/** @defgroup VL53L010_cut10_group VL53L010 cut1.0 Function Definition
+ *  @brief    VL53L010 cut1.0 Function Definition
+ *  @{
+ */
+
+/** @defgroup VL53L010_general_group VL53L010 General Functions
+ *  @brief   VL53L010 General functions and definitions
+ *  @{
+ */
+
+/**
+ * @brief Return the VL53L0 PAL Implementation Version
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   pVersion              Pointer to current PAL Implementation Version
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetVersion(VL53L0_Version_t *pVersion);
+
+/**
+ * @brief Return the PAL Specification Version used for the current
+ * implementation.
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   pPalSpecVersion       Pointer to current PAL Specification Version
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetPalSpecVersion(
+			VL53L0_Version_t *pPalSpecVersion);
+
+
+/**
+ * @brief Reads the Device information for given Device
+ *
+ * @note This function Access to the device.\n
+ * Use ProductRevisionMajor and ProductRevisionMinor to know the cut
+ *			of the device used.
+ *
+ * @param   Dev                 Device Handle
+ * @param   pVL53L0_DeviceInfo     Pointer to current device info for a given
+ * Device
+ *
+ * @return  VL53L0_ERROR_NONE      Success
+ * @return  "Other error code"  See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetDeviceInfo(VL53L0_DEV Dev,
+			VL53L0_DeviceInfo_t *pVL53L0_DeviceInfo);
+
+
+/**
+ * @brief Read current status of the error register for the selected device
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pDeviceErrorStatus    Pointer to current error code of the device
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetDeviceErrorStatus(VL53L0_DEV Dev,
+			VL53L010_DeviceError * pDeviceErrorStatus);
+
+/**
+ * @brief Human readable error string for a given Error Code
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   ErrorCode             The error code as stored on
+ * ::VL53L0_DeviceError
+ * @param   pDeviceErrorString    The error string corresponding to the
+ * ErrorCode
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetDeviceErrorString(
+			VL53L010_DeviceError ErrorCode,
+			char *pDeviceErrorString);
+
+
+/**
+ * @brief Human readable error string for current PAL error status
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   PalErrorCode          The error code as stored on @a VL53L0_Error
+ * @param   pPalErrorString       The error string corresponding to the
+ * PalErrorCode
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetPalErrorString(VL53L0_Error PalErrorCode,
+			char *pPalErrorString);
+
+
+/**
+ * @brief Reads the internal state of the PAL for a given Device
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pPalState             Pointer to current state of the PAL for a
+ * given Device
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetPalState(VL53L0_DEV Dev,
+			VL53L0_State * pPalState);
+
+
+/**
+ * @brief Set the power mode for a given Device
+ * The power mode can be Standby or Idle. Different level of both Standby and
+ * Idle can exists.
+ * This function should not be used when device is in Ranging state.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   PowerMode             The value of the power mode to set.
+ * see ::VL53L0_PowerModes Valid values are:
+ * VL53L0_POWERMODE_STANDBY_LEVEL1, VL53L0_POWERMODE_IDLE_LEVEL1
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  VL53L0_ERROR_MODE_NOT_SUPPORTED    This error occurs when PowerMode
+ * is not in the supported list
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetPowerMode(VL53L0_DEV Dev,
+			VL53L0_PowerModes PowerMode);
+
+/**
+ * @brief Get the power mode for a given Device
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pPowerMode            Pointer to the current value of the power
+ * mode. see ::VL53L0_PowerModes. Valid values are:
+ * VL53L0_POWERMODE_STANDBY_LEVEL1, VL53L0_POWERMODE_IDLE_LEVEL1
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetPowerMode(VL53L0_DEV Dev,
+			VL53L0_PowerModes * pPowerMode);
+
+
+/**
+ * Set or over-hide part to part calibration offset
+ * \sa VL53L0_DataInit()   VL53L0_GetOffsetCalibrationDataMicroMeter()
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                Device Handle
+ * @param   OffsetCalibrationDataMicroMeter    Offset (in micrometer)
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  "Other error code"                 See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetOffsetCalibrationDataMicroMeter(
+			VL53L0_DEV Dev,
+			int32_t OffsetCalibrationDataMicroMeter);
+
+/**
+ * @brief Get part to part calibration offset
+ *
+ * @par Function Description
+ * Should only be used after a successful call to @a VL53L0_DataInit to backup
+ * device NVM value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                Device Handle
+ * @param   pOffsetCalibrationDataMicroMeter   Return part to part calibration
+ * offset from device (in micro meter)
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  "Other error code"                 See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetOffsetCalibrationDataMicroMeter(
+			VL53L0_DEV Dev,
+			int32_t *pOffsetCalibrationDataMicroMeter);
+
+/**
+ * Set Group parameter Hold state
+ *
+ * @par Function Description
+ * Set or remove device internal group parameter hold
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev      Device Handle
+ * @param   GroupParamHold   Group parameter Hold state to be set (on/off)
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED        Not implemented
+ */
+VL53L010_API VL53L0_Error VL53L010_SetGroupParamHold(VL53L0_DEV Dev,
+			uint8_t GroupParamHold);
+
+/**
+ * @brief Get the maximal distance for actual setup
+ * @par Function Description
+ * Device must be initialized through @a VL53L0_SetParameters() prior calling
+ * this function.
+ *
+ * Any range value more than the value returned is to be considered as "no
+ * target detected"
+ * or "no target in detectable range"\n
+ * @warning The maximal distance depends on the setup
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev      Device Handle
+ * @param   pUpperLimitMilliMeter   The maximal range limit for actual setup
+ * (in millimeter)
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED        Not implemented
+ */
+VL53L010_API VL53L0_Error VL53L010_GetUpperLimitMilliMeter(VL53L0_DEV Dev,
+			uint16_t *pUpperLimitMilliMeter);
+
+/** @} VL53L010_general_group */
+
+
+/** @defgroup VL53L010_init_group VL53L010 Init Functions
+ *  @brief    VL53L010 Init Functions
+ *  @{
+ */
+
+/**
+ * @brief Set new device address
+ *
+ * After completion the device will answer to the new address programmed. This
+ * function should be called when several devices are used in parallel
+ * before start programming the sensor.
+ * When a single device us used, there is no need to call this function.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   DeviceAddress         The new Device address
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetDeviceAddress(VL53L0_DEV Dev,
+			uint8_t DeviceAddress);
+
+/**
+ *
+ * @brief One time device initialization
+ *
+ * To be called once and only once after device is brought out of reset (Chip
+ * enable) and booted see @a VL53L0_WaitDeviceBooted()
+ *
+ * @par Function Description
+ * When not used after a fresh device "power up" or reset, it may return @a
+ * #VL53L0_ERROR_CALIBRATION_WARNING
+ * meaning wrong calibration data may have been fetched from device that can
+ * result in ranging offset error\n
+ * If application cannot execute device reset or need to run VL53L0_DataInit
+ * multiple time
+ * then it  must ensure proper offset calibration saving and restore on its own
+ * by using @a VL53L0_GetOffsetCalibrationData() on first power up and then @a
+ * VL53L0_SetOffsetCalibrationData() in all subsequent init
+ * This function will change the VL53L0_State from VL53L0_STATE_POWERDOWN to
+ * VL53L0_STATE_WAIT_STATICINIT.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_DataInit(VL53L0_DEV Dev);
+
+/**
+ * @brief Do basic device init (and eventually patch loading)
+ * This function will change the VL53L0_State from VL53L0_STATE_WAIT_STATICINIT
+ * to VL53L0_STATE_IDLE.
+ * In this stage all defalut setting will be applied.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_StaticInit(VL53L0_DEV Dev);
+
+/**
+ * @brief Wait for device booted after chip enable (hardware standby)
+ * This function can be run only when VL53L0_State is VL53L0_STATE_POWERDOWN.
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev      Device Handle
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED        Not implemented
+ *
+ */
+VL53L010_API VL53L0_Error VL53L010_WaitDeviceBooted(VL53L0_DEV Dev);
+
+/**
+ * @brief Do an hard reset or soft reset (depending on implementation) of the
+ * device \n
+ * After call of this function, device must be in same state as right after a
+ * power-up sequence.
+ * This function will change the VL53L0_State to VL53L0_STATE_POWERDOWN.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_ResetDevice(VL53L0_DEV Dev);
+
+/** @} VL53L010_init_group */
+
+
+/** @defgroup VL53L010_parameters_group VL53L010 Parameters Functions
+ *  @brief   VL53L010 Functions used to prepare and setup the device
+ *  @{
+ */
+
+/**
+ * @brief  Prepare device for operation
+ * @par Function Description
+ * Update device with provided parameters
+ * @li Then start ranging operation.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pDeviceParameters     Pointer to store current device parameters.
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetDeviceParameters(VL53L0_DEV Dev,
+			const VL53L0_DeviceParameters_t *pDeviceParameters);
+
+/**
+ * @brief  Retrieve current device parameters
+ * @par Function Description
+ * Get actual parameters of the device
+ * @li Then start ranging operation.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pDeviceParameters     Pointer to store current device parameters.
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetDeviceParameters(VL53L0_DEV Dev,
+			VL53L0_DeviceParameters_t *pDeviceParameters);
+
+/**
+ * @brief  Set a new device mode
+ * @par Function Description
+ * Set device to a new mode (ranging, histogram ...)
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   DeviceMode            New device mode to apply
+ *                                Valid values are:
+ *                                VL53L0_DEVICEMODE_SINGLE_RANGING
+ *                                VL53L0_DEVICEMODE_CONTINUOUS_RANGING
+ *                                VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING
+ *                                VL53L0_DEVICEMODE_SINGLE_HISTOGRAM
+ * (functionality not available)
+ *
+ * @return  VL53L0_ERROR_NONE                   Success
+ * @return  VL53L0_ERROR_MODE_NOT_SUPPORTED     This error occurs when
+ * DeviceMode is not in the supported list
+ */
+VL53L010_API VL53L0_Error VL53L010_SetDeviceMode(VL53L0_DEV Dev,
+			VL53L0_DeviceModes DeviceMode);
+
+/**
+ * @brief  Get current new device mode
+ * @par Function Description
+ * Get actual mode of the device(ranging, histogram ...)
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pDeviceMode           Pointer to current apply mode value
+ *                                Valid values are:
+ *                                VL53L0_DEVICEMODE_SINGLE_RANGING
+ *                                VL53L0_DEVICEMODE_CONTINUOUS_RANGING
+ *                                VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING
+ *                                VL53L0_DEVICEMODE_SINGLE_HISTOGRAM
+ * (functionality not available)
+ *
+ * @return  VL53L0_ERROR_NONE                   Success
+ * @return  VL53L0_ERROR_MODE_NOT_SUPPORTED     This error occurs when
+ * DeviceMode is not in the supported list
+ */
+VL53L010_API VL53L0_Error VL53L010_GetDeviceMode(VL53L0_DEV Dev,
+			VL53L0_DeviceModes * pDeviceMode);
+
+/**
+ * @brief  Set a new Histogram mode
+ * @par Function Description
+ * Set device to a new Histogram mode
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   HistogramMode         New device mode to apply
+ *                                Valid values are:
+ *                                VL53L0_HISTOGRAMMODE_DISABLED
+ * @return  VL53L0_ERROR_NONE                   Success
+ * @return  VL53L0_ERROR_MODE_NOT_SUPPORTED     This error occurs when
+ * HistogramMode is not in the supported list
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetHistogramMode(VL53L0_DEV Dev,
+			VL53L0_HistogramModes HistogramMode);
+
+/**
+ * @brief  Get current new device mode
+ * @par Function Description
+ * Get current Histogram mode of a Device
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pHistogramMode        Pointer to current Histogram Mode value
+ *                                Valid values are:
+ *                                VL53L0_HISTOGRAMMODE_DISABLED
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetHistogramMode(VL53L0_DEV Dev,
+			VL53L0_HistogramModes * pHistogramMode);
+
+/**
+ * @brief Set Ranging Timing Budget in microseconds
+ *
+ * @par Function Description
+ * Defines the maximum time allowed by the user to the device to run a full
+ * ranging sequence
+ * for the current mode (ranging, histogram, ASL ...)
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                Device Handle
+ * @param MeasurementTimingBudgetMicroSeconds  Max measurement time in
+ * microseconds.
+ *                                             Valid values are:
+ *                                             >= 17000 microseconds when
+ * wraparound is enabled
+ *                                             >= 12000 microseconds when
+ * wraparound is disabled
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS        This error is returned if
+ * MeasurementTimingBudgetMicroSeconds is out of range
+ * @return  "Other error code"                 See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetMeasurementTimingBudgetMicroSeconds(
+			VL53L0_DEV Dev,
+			uint32_t MeasurementTimingBudgetMicroSeconds);
+
+/**
+ * @brief Get Ranging Timing Budget in microseconds
+ *
+ * @par Function Description
+ * Returns the programmed the maximum time allowed by the user to the device to
+ * run a full ranging sequence
+ * for the current mode (ranging, histogram, ASL ...)
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                    Device Handle
+ * @param   pMeasurementTimingBudgetMicroSeconds   Max measurement time in
+ * microseconds.
+ *                                                 Valid values are:
+ *                                                 >= 17000 microseconds when
+ * wraparound is enabled
+ *                                                 >= 12000 microseconds when
+ * wraparound is disabled
+ * @return  VL53L0_ERROR_NONE                      Success
+ * @return  "Other error code"                     See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetMeasurementTimingBudgetMicroSeconds(
+			VL53L0_DEV Dev,
+			uint32_t *pMeasurementTimingBudgetMicroSeconds);
+
+/**
+ * Program continuous mode Inter-Measurement period in milliseconds
+ *
+ * @par Function Description
+ * When trying to set too short time return  INVALID_PARAMS minimal value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                  Device Handle
+ * @param   InterMeasurementPeriodMilliSeconds   Requires Inter-Measurement
+ * Period in milliseconds.
+ * @return  VL53L0_ERROR_NONE                    Success
+ * @return  "Other error code"                   See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetInterMeasurementPeriodMilliSeconds(
+			VL53L0_DEV Dev,
+			uint32_t InterMeasurementPeriodMilliSeconds);
+
+/**
+ * Get continuous mode Inter-Measurement period in milliseconds
+ *
+ * @par Function Description
+ * When trying to set too short time return  INVALID_PARAMS minimal value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                  Device Handle
+ * @param   pInterMeasurementPeriodMilliSeconds  Pointer to programmed
+ * Inter-Measurement Period in milliseconds.
+ * @return  VL53L0_ERROR_NONE                    Success
+ * @return  "Other error code"                   See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetInterMeasurementPeriodMilliSeconds(
+			VL53L0_DEV Dev,
+			uint32_t *pInterMeasurementPeriodMilliSeconds);
+
+/**
+ * @brief Enable/Disable Cross talk compensation feature
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                       Device Handle
+ * @param   XTalkCompensationEnable   Cross talk compensation to be set
+ * 0=disabled else = enabled
+ * @return  VL53L0_ERROR_NONE         Success
+ * @return  "Other error code"        See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetXTalkCompensationEnable(
+			VL53L0_DEV Dev, uint8_t XTalkCompensationEnable);
+
+/**
+ * @brief Get Cross talk compensation rate
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                        Device Handle
+ * @param   pXTalkCompensationEnable   Pointer to the Cross talk compensation
+ * state 0=disabled or 1 = enabled
+ * @return  VL53L0_ERROR_NONE          Success
+ * @return  "Other error code"         See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetXTalkCompensationEnable(
+			VL53L0_DEV Dev, uint8_t *pXTalkCompensationEnable);
+
+/**
+ * @brief Set Cross talk compensation rate
+ *
+ * @par Function Description
+ * Set Cross talk compensation rate.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                            Device Handle
+ * @param   XTalkCompensationRateMegaCps   Compensation rate in Mega counts per
+ * second (16.16 fix point) see datasheet for details
+ * @return  VL53L0_ERROR_NONE              Success
+ * @return  "Other error code"             See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetXTalkCompensationRateMegaCps(
+			VL53L0_DEV Dev,
+			FixPoint1616_t XTalkCompensationRateMegaCps);
+
+/**
+ * @brief Get Cross talk compensation rate
+ *
+ * @par Function Description
+ * Get Cross talk compensation rate.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                            Device Handle
+ * @param   pXTalkCompensationRateMegaCps  Pointer to Compensation rate in Mega
+ * counts per second (16.16 fix point) see datasheet for details
+ * @return  VL53L0_ERROR_NONE              Success
+ * @return  "Other error code"             See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetXTalkCompensationRateMegaCps(
+			VL53L0_DEV Dev,
+			FixPoint1616_t *pXTalkCompensationRateMegaCps);
+
+
+/**
+ * @brief  Get the number of the check limit managed by a given Device
+ *
+ * @par Function Description
+ * This function give the number of the check limit managed by the Device
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   pNumberOfLimitCheck           Pointer to the number of check limit.
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetNumberOfLimitCheck(
+			uint16_t *pNumberOfLimitCheck);
+
+/**
+ * @brief  Return a description string for a given limit check number
+ *
+ * @par Function Description
+ * This function returns a description string for a given limit check number.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID  (0<= LimitCheckId <
+ * VL53L0_GetNumberOfLimitCheck() ).
+ * @param   pLimitCheckString             Pointer to the description string of
+ * the given check limit.
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned when
+ * LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetLimitCheckInfo(VL53L0_DEV Dev,
+			uint16_t LimitCheckId, char *pLimitCheckString);
+
+
+/**
+ * @brief  Enable/Disable a specific limit check
+ *
+ * @par Function Description
+ * This function Enable/Disable a specific limit check.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID  (0<= LimitCheckId <
+ * VL53L0_GetNumberOfLimitCheck() ).
+ * @param   LimitCheckEnable              if 1 the check limit corresponding to
+ * LimitCheckId is Enabled
+ *                                        if 0 the check limit corresponding to
+ * LimitCheckId is disabled
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned when
+ * LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetLimitCheckEnable(VL53L0_DEV Dev,
+			uint16_t LimitCheckId, uint8_t LimitCheckEnable);
+
+
+/**
+ * @brief  Get specific limit check enable state
+ *
+ * @par Function Description
+ * This function get the enable state of a specific limit check.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID  (0<= LimitCheckId <
+ * VL53L0_GetNumberOfLimitCheck() ).
+ * @param   pLimitCheckEnable             Pointer to the check limit enable
+ * value.
+ *                                        if 1 the check limit corresponding to
+ * LimitCheckId is Enabled
+ *                                        if 0 the check limit corresponding to
+ * LimitCheckId is disabled
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned when
+ * LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetLimitCheckEnable(VL53L0_DEV Dev,
+			uint16_t LimitCheckId, uint8_t *pLimitCheckEnable);
+
+/**
+ * @brief  Set a specific limit check value
+ *
+ * @par Function Description
+ * This function set a specific limit check value.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID  (0<= LimitCheckId <
+ * VL53L0_GetNumberOfLimitCheck() ).
+ * @param   LimitCheckValue               Limit check Value for a given
+ * LimitCheckId
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned when either
+ * LimitCheckId or LimitCheckValue value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetLimitCheckValue(VL53L0_DEV Dev,
+			uint16_t LimitCheckId, FixPoint1616_t LimitCheckValue);
+
+/**
+ * @brief  Get a specific limit check value
+ *
+ * @par Function Description
+ * This function get a specific limit check value from device then it updates
+ * internal values and check enables.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID  (0<= LimitCheckId <
+ * VL53L0_GetNumberOfLimitCheck() ).
+ * @param   pLimitCheckValue              Pointer to Limit check Value for a
+ * given LimitCheckId.
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned when
+ * LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetLimitCheckValue(VL53L0_DEV Dev,
+			uint16_t LimitCheckId,
+			FixPoint1616_t *pLimitCheckValue);
+
+
+/**
+ * @brief  Get the current value of the signal used for the limit check
+ *
+ * @par Function Description
+ * This function get a the current value of the signal used for the limit check.
+ * To obtain the latest value you should run a ranging before.
+ * The value reported is linked to the limit check identified with the
+ * LimitCheckId.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID  (0<= LimitCheckId <
+ * VL53L0_GetNumberOfLimitCheck() ).
+ * @param   pLimitCheckCurrent            Pointer to current Value for a
+ * given LimitCheckId.
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned when
+ * LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetLimitCheckCurrent(VL53L0_DEV Dev,
+		uint16_t LimitCheckId, FixPoint1616_t *pLimitCheckCurrent);
+
+/**
+ * @brief  Enable (or disable) Wrap around Check
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                    Device Handle
+ * @param   WrapAroundCheckEnable  Wrap around Check to be set 0=disabled,
+ * other = enabled
+ * @return  VL53L0_ERROR_NONE      Success
+ * @return  "Other error code"     See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetWrapAroundCheckEnable(VL53L0_DEV Dev,
+			uint8_t WrapAroundCheckEnable);
+
+/**
+ * @brief  Get setup of Wrap around Check
+ *
+ * @par Function Description
+ * This function get the wrapAround check enable parameters
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                     Device Handle
+ * @param   pWrapAroundCheckEnable  Pointer to the Wrap around Check state
+ * 0=disabled or 1 = enabled
+ * @return  VL53L0_ERROR_NONE       Success
+ * @return  "Other error code"      See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetWrapAroundCheckEnable(VL53L0_DEV Dev,
+			uint8_t *pWrapAroundCheckEnable);
+
+/** @} VL53L010_parameters_group */
+
+
+/** @defgroup VL53L010_measurement_group VL53L010 Measurement Functions
+ *  @brief   VL53L010 Functions used for the measurements
+ *  @{
+ */
+
+/**
+ * @brief Single shot measurement.
+ *
+ * @par Function Description
+ * Perform simple measurement sequence (Start measure, Wait measure to end, and
+ * returns when measurement is done).
+ * Once function returns, user can get valid data by calling
+ * VL53L0_GetRangingMeasurement or VL53L0_GetHistogramMeasurement depending on
+ * defined measurement mode
+ * User should Clear the interrupt in case this are enabled by using the
+ * function VL53L0_ClearInterruptMask().
+ *
+ * @warning This function is a blocking function
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                  Device Handle
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_PerformSingleMeasurement(VL53L0_DEV Dev);
+
+/**
+ * @brief Perform Reference Calibration
+ *
+ * @details Perform a reference calibration of the Device.
+ * This function should be run from time to time before doing a ranging
+ * measurement.
+ * This function will launch a special ranging measurement, so if interrupt are
+ * enable an interrupt will be done.
+ * This function will clear the interrupt generated automatically.
+ *
+ * @warning This function is a blocking function
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                  Device Handle
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_PerformRefCalibration(VL53L0_DEV Dev);
+
+/**
+ * @brief Perform XTalk Calibration
+ *
+ * @details Perform a XTalk calibration of the Device.
+ * This function will launch a ranging measurement, if interrupts are enabled
+ * an interrupt will be done.
+ * This function will clear the interrupt generated automatically.
+ * This function will program a new value for the XTalk compensation and it
+ * will enable the cross talk before exit.
+ *
+ * @warning This function is a blocking function
+ *
+ * @note This function Access to the device
+ *
+ * @note This function change the device mode to
+ * VL53L0_DEVICEMODE_SINGLE_RANGING
+ *
+ * @param   Dev                  Device Handle
+ * @param   XTalkCalDistance               XTalkCalDistance value used for the
+ * XTalk computation.
+ * @param   pXTalkCompensationRateMegaCps  Pointer to new XTalkCompensation
+ * value.
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_PerformXTalkCalibration(VL53L0_DEV Dev,
+			FixPoint1616_t XTalkCalDistance,
+			FixPoint1616_t *pXTalkCompensationRateMegaCps);
+
+/**
+ * @brief Perform Offset Calibration
+ *
+ * @details Perform a Offset calibration of the Device.
+ * This function will launch a ranging measurement, if interrupts are
+ * enabled an interrupt will be done.
+ * This function will clear the interrupt generated automatically.
+ * This function will program a new value for the Offset calibration value and
+ *
+ * @warning This function is a blocking function
+ *
+ * @note This function Access to the device
+ *
+ * @note This function does not change the device mode.
+ *
+ * @param   Dev                  Device Handle
+ * @param   CalDistanceMilliMeter     Calibration distance value used for the
+ * offset compensation.
+ * @param   pOffsetMicroMeter  Pointer to new Offset value computed by the
+ * function.
+ *
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_PerformOffsetCalibration(VL53L0_DEV Dev,
+	    FixPoint1616_t CalDistanceMilliMeter, int32_t *pOffsetMicroMeter);
+
+/**
+ * @brief Start device measurement
+ *
+ * @details Started measurement will depend on device parameters set through @a
+ * VL53L0_SetParameters()
+ * This is a non-blocking function
+ * This function will change the VL53L0_State from VL53L0_STATE_IDLE to
+ * VL53L0_STATE_RUNNING.
+ *
+ * @note This function Access to the device
+ *
+
+ * @param   Dev                  Device Handle
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  VL53L0_ERROR_MODE_NOT_SUPPORTED    This error occurs when
+ * DeviceMode programmed with @a VL53L0_SetDeviceMode is not in the supported
+ * list:
+ *                                             Supported mode are:
+ * VL53L0_DEVICEMODE_SINGLE_RANGING, VL53L0_DEVICEMODE_CONTINUOUS_RANGING,
+ * VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING
+ * @return  VL53L0_ERROR_TIME_OUT    Time out on start measurement
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_StartMeasurement(VL53L0_DEV Dev);
+
+/**
+ * @brief Stop device measurement
+ *
+ * @details Will set the device in standby mode at end of current measurement \n
+ *          Not necessary in single mode as device shall return automatically
+ * in standby mode at end of measurement.
+ *          This function will change the VL53L0_State from
+ * VL53L0_STATE_RUNNING to VL53L0_STATE_IDLE.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                  Device Handle
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_StopMeasurement(VL53L0_DEV Dev);
+
+/**
+ * @brief Return Measurement Data Ready
+ *
+ * @par Function Description
+ * This function indicate that a measurement data is ready.
+ * This function check if interrupt mode is used then check is done accordingly.
+ * If perform function clear the interrupt, this function will not work, like
+ * in case of @a VL53L0_PerformSingleRangingMeasurement().
+ * The previous function is blocking function, VL53L0_GetMeasurementDataReady
+ * is used for non-blocking capture.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                    Device Handle
+ * @param   pMeasurementDataReady  Pointer to Measurement Data Ready. 0=data
+ * not ready, 1 = data ready
+ * @return  VL53L0_ERROR_NONE      Success
+ * @return  "Other error code"     See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetMeasurementDataReady(VL53L0_DEV Dev,
+			uint8_t *pMeasurementDataReady);
+
+/**
+ * @brief Wait for device ready for a new measurement command. Blocking
+ * function.
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev      Device Handle
+ * @param   MaxLoop    Max Number of polling loop (timeout).
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED   Not implemented
+ */
+VL53L010_API VL53L0_Error VL53L010_WaitDeviceReadyForNewMeasurement(
+			VL53L0_DEV Dev,
+			uint32_t MaxLoop);
+
+
+/**
+ * @brief Retrieve the measurements from device for a given setup
+ *
+ * @par Function Description
+ * Get data from last successful Ranging measurement
+ * @warning USER should take care about  @a VL53L0_GetNumberOfROIZones() before
+ * get data.
+ * PAL will fill a NumberOfROIZones times the corresponding data structure used
+ * in the measurement function.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                      Device Handle
+ * @param   pRangingMeasurementData  Pointer to the data structure to fill up.
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"       See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetRangingMeasurementData(VL53L0_DEV Dev,
+		VL53L0_RangingMeasurementData_t *pRangingMeasurementData);
+
+/**
+ * @brief Retrieve the measurements from device for a given setup
+ *
+ * @par Function Description
+ * Get data from last successful Histogram measurement
+ * @warning USER should take care about  @a VL53L0_GetNumberOfROIZones() before
+ * get data.
+ * PAL will fill a NumberOfROIZones times the corresponding data structure used
+ * in the measurement function.
+ * @note This function is not Implemented
+ * @param   Dev			            Device Handle
+ * @param   pHistogramMeasurementData  Pointer to the data structure to fill
+ * up.
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED   Not implemented
+ */
+VL53L010_API VL53L0_Error VL53L010_GetHistogramMeasurementData(VL53L0_DEV Dev,
+		VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData);
+
+/**
+ * @brief Performs a single ranging measurement and retrieve the ranging
+ * measurement data
+ *
+ * @par Function Description
+ * This function will change the device mode to
+ * VL53L0_DEVICEMODE_SINGLE_RANGING with @a VL53L0_SetDeviceMode(),
+ * It performs measurement with @a VL53L0_PerformSingleMeasurement()
+ * It get data from last successful Ranging measurement with @a
+ * VL53L0_GetRangingMeasurementData.
+ * Finally it clear the interrupt with @a VL53L0_ClearInterruptMask().
+ * @note This function Access to the device
+ *
+ * @note This function change the device mode to
+ * VL53L0_DEVICEMODE_SINGLE_RANGING
+ *
+ * @param   Dev			          Device Handle
+ * @param   pRangingMeasurementData   Pointer to the data structure to fill up.
+ * @return  VL53L0_ERROR_NONE         Success
+ * @return  "Other error code"        See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_PerformSingleRangingMeasurement(
+		VL53L0_DEV Dev,
+		VL53L0_RangingMeasurementData_t *pRangingMeasurementData);
+
+/**
+ * @brief Performs a single histogram measurement and retrieve the histogram
+ * measurement data
+ *        Is equivalent to VL53L0_PerformSingleMeasurement +
+ * VL53L0_GetHistogramMeasurementData
+ *
+ * @par Function Description
+ * Get data from last successful Ranging measurement.
+ * This function will clear the interrupt in case of these are enabled.
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev			            Device Handle
+ * @param   pHistogramMeasurementData	Pointer to the data structure to fill
+ * up.
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED   Not implemented
+ */
+VL53L010_API VL53L0_Error VL53L010_PerformSingleHistogramMeasurement(
+		VL53L0_DEV Dev,
+		VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData);
+
+
+
+/**
+ * @brief Set the number of ROI Zones to be used for a specific Device
+ *
+ * @par Function Description
+ * Set the number of ROI Zones to be used for a specific Device.
+ * The programmed value should be less than the max number of ROI Zones given
+ * with  @a VL53L0_GetMaxNumberOfROIZones().
+ * This version of API manage only one zone.
+ *
+ * @param   Dev			            Device Handle
+ * @param   NumberOfROIZones            Number of ROI Zones to be used for a
+ * specific Device.
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned if
+ * NumberOfROIZones != 1
+ */
+VL53L010_API VL53L0_Error VL53L010_SetNumberOfROIZones(VL53L0_DEV Dev,
+			uint8_t NumberOfROIZones);
+
+/**
+ * @brief Get the number of ROI Zones managed by the Device
+ *
+ * @par Function Description
+ * Get number of ROI Zones managed by the Device
+ * USER should take care about  @a VL53L0_GetNumberOfROIZones() before get data
+ * after a perform measurement.
+ * PAL will fill a NumberOfROIZones times the corresponding data structure used
+ * in the measurement function.
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev			            Device Handle
+ * @param   pNumberOfROIZones           Pointer to the Number of ROI Zones
+ * value.
+ * @return  VL53L0_ERROR_NONE           Success
+ */
+VL53L010_API VL53L0_Error VL53L010_GetNumberOfROIZones(VL53L0_DEV Dev,
+			uint8_t *pNumberOfROIZones);
+
+/**
+ * @brief Get the Maximum number of ROI Zones managed by the Device
+ *
+ * @par Function Description
+ * Get Maximum number of ROI Zones managed by the Device.
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev			            Device Handle
+ * @param   pMaxNumberOfROIZones        Pointer to the Maximum Number of ROI
+ * Zones value.
+ * @return  VL53L0_ERROR_NONE           Success
+ */
+VL53L010_API VL53L0_Error VL53L010_GetMaxNumberOfROIZones(VL53L0_DEV Dev,
+			uint8_t *pMaxNumberOfROIZones);
+
+
+/** @} VL53L010_measurement_group */
+
+
+/** @defgroup VL53L010_interrupt_group VL53L010 Interrupt Functions
+ *  @brief   VL53L010 Functions used for interrupt managements
+ *  @{
+ */
+
+/**
+ * @brief Set the configuration of GPIO pin for a given device
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   Pin                   ID of the GPIO Pin
+ * @param   Functionality         Select Pin functionality. Refer to
+ * ::VL53L0_GpioFunctionality
+ * @param   DeviceMode            Device Mode associated to the Gpio.
+ * @param   Polarity              Set interrupt polarity. Active high or active
+ * low see ::VL53L0_InterruptPolarity
+ * @return  VL53L0_ERROR_NONE                                Success
+ * @return  VL53L0_ERROR_GPIO_NOT_EXISTING                   Only Pin=0 is
+ * accepted.
+ * @return  VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED    This error occurs
+ * when Functionality programmed is not in the supported list:
+ * Supported value
+ * are:
+ *
+ * VL53L0_GPIOFUNCTIONALITY_OFF, VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW,
+ * VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH,
+ * VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT,
+ *
+ * VL53L0_GPIOFUNCTIONALITY_NEW_MEASURE_READY
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetGpioConfig(VL53L0_DEV Dev, uint8_t Pin,
+				VL53L0_DeviceModes DeviceMode,
+				VL53L0_GpioFunctionality Functionality,
+				VL53L0_InterruptPolarity Polarity);
+
+
+/**
+ * @brief Get current configuration for GPIO pin for a given device
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   Pin                   ID of the GPIO Pin
+ * @param   pDeviceMode           Pointer to Device Mode associated to the Gpio.
+ * @param   pFunctionality        Pointer to Pin functionality.
+ * Refer to ::VL53L0_GpioFunctionality
+ * @param   pPolarity             Pointer to interrupt polarity. Active high or
+ * active low see ::VL53L0_InterruptPolarity
+ * @return  VL53L0_ERROR_NONE                            Success
+ * @return  VL53L0_ERROR_GPIO_NOT_EXISTING               Only Pin=0 is accepted.
+ * @return  VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED    This error occurs
+ * when Functionality programmed is not in the supported list:
+ * Supported value are:
+ * VL53L0_GPIOFUNCTIONALITY_OFF, VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW,
+ * VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH,
+ * VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT,
+ * VL53L0_GPIOFUNCTIONALITY_NEW_MEASURE_READY
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetGpioConfig(VL53L0_DEV Dev, uint8_t Pin,
+			VL53L0_DeviceModes * pDeviceMode,
+			VL53L0_GpioFunctionality * pFunctionality,
+			VL53L0_InterruptPolarity * pPolarity);
+
+/**
+ * @brief Set low and high Interrupt thresholds for a given mode (ranging, ALS,
+ * ...) for a given device
+ *
+ * @par Function Description
+ * Set low and high Interrupt thresholds for a given mode (ranging, ALS, ...)
+ * for a given device
+ *
+ * @note This function Access to the device
+ *
+ * @note DeviceMode is ignored for the current device
+ *
+ * @param   Dev                  Device Handle
+ * @param   DeviceMode           Device Mode for which change thresholds
+ * @param   ThresholdLow         Low threshold (mm, lux ..., depending on the
+ * mode)
+ * @param   ThresholdHigh        High threshold (mm, lux ..., depending on the
+ * mode)
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetInterruptThresholds(VL53L0_DEV Dev,
+			VL53L0_DeviceModes DeviceMode,
+			FixPoint1616_t ThresholdLow,
+			FixPoint1616_t ThresholdHigh);
+
+/**
+ * @brief  Get high and low Interrupt thresholds for a given mode (ranging,
+ * ALS, ...) for a given device
+ *
+ * @par Function Description
+ * Get high and low Interrupt thresholds for a given mode (ranging, ALS, ...)
+ * for a given device
+ *
+ * @note This function Access to the device
+ *
+ * @note DeviceMode is ignored for the current device
+ *
+ * @param   Dev                 Device Handle
+ * @param   DeviceMode          Device Mode from which read thresholds
+ * @param   pThresholdLow       Low threshold (mm, lux ..., depending on the
+ * mode)
+ * @param   pThresholdHigh      High threshold (mm, lux ..., depending on the
+ * mode)
+ * @return  VL53L0_ERROR_NONE   Success
+ * @return  "Other error code"  See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetInterruptThresholds(VL53L0_DEV Dev,
+			VL53L0_DeviceModes DeviceMode,
+			FixPoint1616_t *pThresholdLow,
+			FixPoint1616_t *pThresholdHigh);
+
+/**
+ * @brief Clear given system interrupt condition
+ *
+ * @par Function Description
+ * Clear given interrupt(s).
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                  Device Handle
+ * @param   InterruptMask        Mask of interrupts to clear
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_ClearInterruptMask(VL53L0_DEV Dev,
+			uint32_t InterruptMask);
+
+/**
+ * @brief Return device interrupt status
+ *
+ * @par Function Description
+ * Returns currently raised interrupts by the device.
+ * User shall be able to activate/deactivate interrupts through
+ * @a VL53L0_SetGpioConfig()
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                    Device Handle
+ * @param   pInterruptMaskStatus   Pointer to status variable to update
+ * @return  VL53L0_ERROR_NONE      Success
+ * @return  "Other error code"     See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetInterruptMaskStatus(VL53L0_DEV Dev,
+			uint32_t *pInterruptMaskStatus);
+
+
+/**
+ * @brief Configure ranging interrupt reported to system
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev			     Device Handle
+ * @param	InterruptMask		Mask of interrupt to Enable/disable
+ * (0:interrupt disabled or 1: interrupt enabled)
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED   Not implemented
+ */
+VL53L010_API VL53L0_Error VL53L010_EnableInterruptMask(VL53L0_DEV Dev,
+			uint32_t InterruptMask);
+
+
+/** @} VL53L010_interrupt_group */
+
+
+/** @defgroup VL53L010_SPADfunctions_group VL53L010 SPAD Functions
+ *  @brief   VL53L010 Functions used for SPAD managements
+ *  @{
+ */
+
+
+
+/**
+ * @brief  Set the SPAD Ambient Damper Threshold value
+ *
+ * @par Function Description
+ * This function set the SPAD Ambient Damper Threshold value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   SpadAmbientDamperThreshold    SPAD Ambient Damper Threshold value
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetSpadAmbientDamperThreshold(VL53L0_DEV Dev,
+					uint16_t SpadAmbientDamperThreshold);
+
+/**
+ * @brief  Get the current SPAD Ambient Damper Threshold value
+ *
+ * @par Function Description
+ * This function get the SPAD Ambient Damper Threshold value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   pSpadAmbientDamperThreshold   Pointer to programmed SPAD Ambient
+ * Damper Threshold value
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetSpadAmbientDamperThreshold(VL53L0_DEV Dev,
+					uint16_t *pSpadAmbientDamperThreshold);
+
+
+/**
+ * @brief  Set the SPAD Ambient Damper Factor value
+ *
+ * @par Function Description
+ * This function set the SPAD Ambient Damper Factor value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   SpadAmbientDamperFactor       SPAD Ambient Damper Factor value
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_SetSpadAmbientDamperFactor(VL53L0_DEV Dev,
+					uint16_t SpadAmbientDamperFactor);
+
+/**
+ * @brief  Get the current SPAD Ambient Damper Factor value
+ *
+ * @par Function Description
+ * This function get the SPAD Ambient Damper Factor value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   pSpadAmbientDamperFactor      Pointer to programmed SPAD Ambient
+ * Damper Factor value
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L010_API VL53L0_Error VL53L010_GetSpadAmbientDamperFactor(VL53L0_DEV Dev,
+				   uint16_t *pSpadAmbientDamperFactor);
+
+
+/** @} VL53L010_SPADfunctions_group */
+
+/** @} VL53L010_cut10_group */
+#define VL53L010_EXTERNAL
+
+
+/* Internal functions declaration */
+VL53L010_EXTERNAL VL53L0_Error VL53L010_get_vcsel_pulse_period(VL53L0_DEV Dev,
+			uint8_t *pVCSELPulsePeriod,
+			uint8_t  RangeIndex);
+VL53L010_EXTERNAL uint8_t VL53L010_encode_vcsel_period(
+		uint8_t vcsel_period_pclks);
+VL53L010_EXTERNAL uint8_t VL53L010_decode_vcsel_period(uint8_t
+						       vcsel_period_reg);
+VL53L010_EXTERNAL uint16_t VL53L010_calc_encoded_timeout(VL53L0_DEV Dev,
+							 uint32_t
+							 timeout_period_us,
+							 uint8_t vcsel_period);
+VL53L010_EXTERNAL uint32_t VL53L010_calc_ranging_wait_us(VL53L0_DEV Dev,
+							 uint16_t
+					 timeout_overall_periods,
+							 uint8_t vcsel_period);
+VL53L010_EXTERNAL VL53L0_Error VL53L010_load_additional_settings1(VL53L0_DEV
+								  Dev);
+VL53L010_EXTERNAL VL53L0_Error VL53L010_load_additional_settings3(VL53L0_DEV
+								  Dev);
+VL53L010_EXTERNAL VL53L0_Error VL53L010_check_part_used(VL53L0_DEV Dev,
+							uint8_t *Revision,
+							VL53L0_DeviceInfo_t *
+							pVL53L0_DeviceInfo);
+VL53L010_EXTERNAL VL53L0_Error VL53L010_get_info_from_device(VL53L0_DEV Dev);
+VL53L010_EXTERNAL VL53L0_Error VL53L010_device_read_strobe(VL53L0_DEV Dev);
+VL53L010_EXTERNAL VL53L0_Error VL53L010_get_pal_range_status(VL53L0_DEV Dev,
+							     uint8_t
+							     DeviceRangeStatus,
+							     FixPoint1616_t
+							     SignalRate,
+							     FixPoint1616_t
+					     CrosstalkCompensation,
+							     uint16_t
+					     EffectiveSpadRtnCount,
+					     VL53L0_RangingMeasurementData_t
+							     *
+					     pRangingMeasurementData,
+							     uint8_t *
+							     pPalRangeStatus);
+
+
+VL53L010_EXTERNAL uint32_t VL53L010_calc_macro_period_ps(VL53L0_DEV Dev,
+							 uint8_t vcsel_period);
+VL53L010_EXTERNAL uint16_t VL53L010_encode_timeout(uint32_t timeout_mclks);
+VL53L010_EXTERNAL uint32_t VL53L010_decode_timeout(uint16_t encoded_timeout);
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VL53L010_API_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l010_device.h b/drivers/input/misc/vl53L0/inc/vl53l010_device.h
new file mode 100644
index 000000000000..5d36ab0f65e4
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l010_device.h
@@ -0,0 +1,237 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+/**
+ * Device specific defines. To be adapted by implementer for the targeted
+ * device.
+ */
+
+#ifndef _VL53L010_DEVICE_H_
+#define _VL53L010_DEVICE_H_
+
+#include "vl53l0_types.h"
+
+/** @defgroup VL53L010_SpecDefines_group VL53L010 cut1.0 Device Specific Defines
+ *  @brief VL53L010 cut1.0 Device Specific Defines
+ *  @{
+ */
+
+/** @defgroup VL53L010_DeviceError_group Device Error
+ *  @brief Device Error code
+ *
+ *  This enum is Device specific it should be updated in the implementation
+ *  Use @a VL53L010_GetStatusErrorString() to get the string.
+ *  It is related to Status Register of the Device.
+ *  @{
+ */
+typedef uint8_t VL53L010_DeviceError;
+
+#define VL53L010_DEVICEERROR_NONE ((VL53L010_DeviceError)   0)
+#define VL53L010_DEVICEERROR_VCSELCONTINUITYTESTFAILURE \
+		((VL53L010_DeviceError) 1)
+#define VL53L010_DEVICEERROR_VCSELWATCHDOGTESTFAILURE \
+		((VL53L010_DeviceError)   2)
+#define VL53L010_DEVICEERROR_NOVHVVALUEFOUND \
+		((VL53L010_DeviceError)   3)
+#define VL53L010_DEVICEERROR_MSRCNOTARGET \
+		((VL53L010_DeviceError)   4)
+#define VL53L010_DEVICEERROR_MSRCMINIMUMSNR  \
+		((VL53L010_DeviceError)   5)
+#define VL53L010_DEVICEERROR_MSRCWRAPAROUND \
+		((VL53L010_DeviceError)   6)
+#define VL53L010_DEVICEERROR_TCC \
+		((VL53L010_DeviceError)   7)
+#define VL53L010_DEVICEERROR_RANGEAWRAPAROUND ((VL53L010_DeviceError)8)
+#define VL53L010_DEVICEERROR_RANGEBWRAPAROUND ((VL53L010_DeviceError)9)
+#define VL53L010_DEVICEERROR_MINCLIP ((VL53L010_DeviceError)   10)
+#define VL53L010_DEVICEERROR_RANGECOMPLETE ((VL53L010_DeviceError)   11)
+#define VL53L010_DEVICEERROR_ALGOUNDERFLOW ((VL53L010_DeviceError)   12)
+#define VL53L010_DEVICEERROR_ALGOOVERFLOW ((VL53L010_DeviceError)   13)
+#define VL53L010_DEVICEERROR_FINALSNRLIMIT ((VL53L010_DeviceError)   14)
+#define VL53L010_DEVICEERROR_NOTARGETIGNORE ((VL53L010_DeviceError)   15)
+
+/** @} VL53L010_DeviceError_group */
+
+/** @defgroup VL53L010_CheckEnable_group Check Enable list
+ *  @brief Check Enable code
+ *
+ *  Define used to specify the LimitCheckId.
+ *  Use @a VL53L010_GetLimitCheckInfo() to get the string.
+ *  @{
+ */
+
+#define VL53L010_CHECKENABLE_SIGMA_FINAL_RANGE           0
+#define VL53L010_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE     1
+#define VL53L010_CHECKENABLE_NUMBER_OF_CHECKS            2
+
+/** @} VL53L010_CheckEnable_group */
+
+/** @defgroup VL53L010_GpioFunctionality_group Gpio Functionality
+ *  @brief Defines the different functionalities for the device GPIO(s)
+ *  @{
+ */
+typedef uint8_t VL53L010_GpioFunctionality;
+
+#define VL53L010_GPIOFUNCTIONALITY_OFF                        \
+	((VL53L010_GpioFunctionality)  0)/*!< NO Interrupt  */
+#define VL53L010_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW      \
+	((VL53L010_GpioFunctionality)  1)/*!< Level Low (value < thresh_low)  */
+#define VL53L010_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH     \
+	((VL53L010_GpioFunctionality)  2)/*!< Level High (value>thresh_high)  */
+/*!< Out Of Window (value < thresh_low OR value > thresh_high)  */
+#define VL53L010_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT  \
+	((VL53L010_GpioFunctionality)  3)
+#define VL53L010_GPIOFUNCTIONALITY_NEW_MEASURE_READY  \
+	((VL53L010_GpioFunctionality)  4)	/*!< New Sample Ready  */
+
+/** @} VL53L010_GpioFunctionality_group */
+
+/* Device register map */
+
+/** @defgroup VL53L010_DefineRegisters_group Define Registers
+ *  @brief List of all the defined registers
+ *  @{
+ */
+#define VL53L010_REG_SYSRANGE_START                        0x000
+    /** mask existing bit in #VL53L010_REG_SYSRANGE_START*/
+#define VL53L010_REG_SYSRANGE_MODE_MASK          0x0F
+    /** bit 0 in #VL53L010_REG_SYSRANGE_START write 1 toggle state in
+     *	continuous mode and arm next shot in single shot mode
+     */
+#define VL53L010_REG_SYSRANGE_MODE_START_STOP    0x01
+    /** bit 1 write 0 in #VL53L010_REG_SYSRANGE_START set single shot mode */
+#define VL53L010_REG_SYSRANGE_MODE_SINGLESHOT    0x00
+	/** bit 1 write 1 in #VL53L010_REG_SYSRANGE_START set back-to-back
+	 *	operation mode
+	 */
+#define VL53L010_REG_SYSRANGE_MODE_BACKTOBACK    0x02
+	/** bit 2 write 1 in #VL53L010_REG_SYSRANGE_START set timed operation
+	* mode
+	 */
+#define VL53L010_REG_SYSRANGE_MODE_TIMED         0x04
+	/** bit 3 write 1 in #VL53L010_REG_SYSRANGE_START set histogram
+	 * operation mode
+	 */
+#define VL53L010_REG_SYSRANGE_MODE_HISTOGRAM     0x08
+
+#define VL53L010_REG_SYSTEM_THRESH_HIGH          0x000C	/* NOSLC  2 bytes */
+#define VL53L010_REG_SYSTEM_THRESH_LOW           0x000E	/* NOSLC  2 bytes */
+
+/* FPGA bitstream */
+#define VL53L010_REG_SYSTEM_SEQUENCE_CONFIG			0x0001
+#define VL53L010_REG_SYSTEM_INTERMEASUREMENT_PERIOD	0x0004
+
+#define VL53L010_REG_SYSTEM_REPORT_REQUEST	        0x0009
+#define	VL53L010_REG_SYSTEM_RANGEA_DATA			0x04
+#define	VL53L010_REG_SYSTEM_RANGEB_DATA			0x05
+
+#define VL53L010_REG_SYSTEM_INTERRUPT_CONFIG_GPIO     0x000A
+#define VL53L010_REG_SYSTEM_INTERRUPT_GPIO_DISABLED		0x00
+#define VL53L010_REG_SYSTEM_INTERRUPT_GPIO_LEVEL_LOW		0x01
+#define VL53L010_REG_SYSTEM_INTERRUPT_GPIO_LEVEL_HIGH	0x02
+#define VL53L010_REG_SYSTEM_INTERRUPT_GPIO_OUT_OF_WINDOW	0x03
+#define VL53L010_REG_SYSTEM_INTERRUPT_GPIO_NEW_SAMPLE_READY	0x04
+
+#define VL53L010_REG_GPIO_HV_MUX_ACTIVE_HIGH          0x0084
+
+#define VL53L010_REG_SYSTEM_INTERRUPT_CLEAR	0x000B
+
+/* Result registers */
+#define VL53L010_REG_RESULT_INTERRUPT_STATUS		    0x0013
+#define VL53L010_REG_RESULT_RANGE_STATUS		        0x0014
+
+#define VL53L010_REG_RESULT_SIGNAL_COUNT_RATE_RET     0x001A
+#define VL53L010_REG_RESULT_AMBIENT_COUNT_RATE_RET    0x001C
+#define VL53L010_REG_RESULT_FINAL_RANGE		        0x001E
+
+/* Algo register */
+#define VL53L010_REG_ALGO_CROSSTALK_COMPENSATION_RATE	0x0020
+#define VL53L010_REG_ALGO_RANGE_IGNORE_VALID_HEIGHT	0x0025
+#define VL53L010_REG_ALGO_RANGE_IGNORE_THRESHOLD		0x0026
+#define VL53L010_REG_ALGO_SNR_RATIO					0x0027
+#define VL53L010_REG_ALGO_RANGE_CHECK_ENABLES		    0x0028
+
+#define VL53L010_REG_ALGO_PART_TO_PART_RANGE_OFFSET	0x0029
+
+#define VL53L010_REG_I2C_SLAVE_DEVICE_ADDRESS	        0x008a
+
+/* MSRC registers */
+#define VL53L010_REG_MSRC_CONFIG_COUNT		        0x0044
+#define VL53L010_REG_MSRC_CONFIG_TIMEOUT		        0x0046
+#define VL53L010_REG_MSRC_CONFIG_MIN_SNR		        0x0055
+#define VL53L010_REG_MSRC_CONFIG_VALID_PHASE_LOW	    0x0047
+#define VL53L010_REG_MSRC_CONFIG_VALID_PHASE_HIGH     0x0048
+
+/* RANGE A registers */
+#define VL53L010_REG_RNGA_CONFIG_VCSEL_PERIOD	0x0050
+#define VL53L010_REG_RNGA_TIMEOUT_MSB			0x0051
+#define VL53L010_REG_RNGA_TIMEOUT_LSB			0x0052
+#define VL53L010_REG_RNGA_CONFIG_VALID_PHASE_LOW	0x0056
+#define VL53L010_REG_RNGA_CONFIG_VALID_PHASE_HIGH	0x0057
+
+/* RANGE B1 registers */
+#define VL53L010_REG_RNGB1_CONFIG_VCSEL_PERIOD	0x0060
+#define VL53L010_REG_RNGB1_TIMEOUT_MSB			0x0061
+#define VL53L010_REG_RNGB1_TIMEOUT_LSB			0x0062
+#define VL53L010_REG_RNGB1_CONFIG_VALID_PHASE_LOW	0x0066
+#define VL53L010_REG_RNGB1_CONFIG_VALID_PHASE_HIGH	0x0067
+
+/* RANGE B2 registers */
+#define VL53L010_REG_RNGB2_CONFIG_VCSEL_PERIOD	0x0070
+#define VL53L010_REG_RNGB2_TIMEOUT_MSB			0x0071
+#define VL53L010_REG_RNGB2_TIMEOUT_LSB			0x0072
+#define VL53L010_REG_RNGB2_CONFIG_VALID_PHASE_LOW	0x0076
+#define VL53L010_REG_RNGB2_CONFIG_VALID_PHASE_HIGH	0x0077
+
+#define VL53L010_REG_SOFT_RESET_GO2_SOFT_RESET_N	  0x00bf
+#define VL53L010_REG_IDENTIFICATION_MODEL_ID        0x00c0
+#define VL53L010_REG_IDENTIFICATION_REVISION_ID     0x00c2
+#define VL53L010_REG_IDENTIFICATION_MODULE_ID       0x00c3
+
+#define VL53L010_REG_OSC_CALIBRATE_VAL              0x00f8
+
+#define VL53L010_REG_FIRMWARE_MODE_STATUS		           0x00C5
+
+#define VL53L010_REG_DYNAMIC_SPAD_ACTUAL_RTN_SPADS_INT   0x0016
+
+#define VL53L010_SIGMA_ESTIMATE_MAX_VALUE                65535
+/*equivalent to a range sigma of 655.35mm */
+
+/*
+ * Speed of light in um per 1E-10 Seconds
+ */
+
+#define VL53L010_SPEED_OF_LIGHT_IN_AIR 2997
+
+/** @} VL53L010_DefineRegisters_group */
+
+/** @} VL53L010_SpecDefines_group */
+
+#endif
+
+/* _VL53L010_DEVICE_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l010_strings.h b/drivers/input/misc/vl53L0/inc/vl53l010_strings.h
new file mode 100644
index 000000000000..714a0f1c479f
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l010_strings.h
@@ -0,0 +1,134 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#ifndef VL53L010_STRINGS_H_
+#define VL53L010_STRINGS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+	#define  VL53L010_STRING_DEVICE_INFO_NAME          \
+		"VL53L0 cut1.0"
+	#define  VL53L010_STRING_DEVICE_INFO_NAME_TS0      \
+		"VL53L0 TS0"
+	#define  VL53L010_STRING_DEVICE_INFO_NAME_TS1       \
+		"VL53L0 TS1"
+	#define  VL53L010_STRING_DEVICE_INFO_NAME_TS2       \
+		"VL53L0 TS2"
+	#define  VL53L010_STRING_DEVICE_INFO_NAME_ES1       \
+		"VL53L0 ES1 or later"
+	#define  VL53L010_STRING_DEVICE_INFO_TYPE           \
+		"VL53L0"
+
+	/* PAL ERROR strings */
+	#define  VL53L010_STRING_ERROR_NONE                 \
+		"No Error"
+	#define  VL53L010_STRING_ERROR_CALIBRATION_WARNING   \
+		"Calibration Warning Error"
+	#define  VL53L010_STRING_ERROR_MIN_CLIPPED           \
+		"Min clipped error"
+	#define  VL53L010_STRING_ERROR_UNDEFINED             \
+		"Undefined error"
+	#define  VL53L010_STRING_ERROR_INVALID_PARAMS        \
+		"Invalid parameters error"
+	#define  VL53L010_STRING_ERROR_NOT_SUPPORTED         \
+		"Not supported error"
+	#define  VL53L010_STRING_ERROR_RANGE_ERROR           \
+		"Range error"
+	#define  VL53L010_STRING_ERROR_TIME_OUT              \
+		"Time out error"
+	#define  VL53L010_STRING_ERROR_MODE_NOT_SUPPORTED     \
+		"Mode not supported error"
+	#define  VL53L010_STRING_ERROR_NOT_IMPLEMENTED        \
+		"Not implemented error"
+
+	#define  VL53L010_STRING_UNKNOW_ERROR_CODE            \
+		"Unknow Error Code"
+	#define  VL53L010_STRING_ERROR_BUFFER_TOO_SMALL       \
+		"Buffer too small"
+
+	#define  VL53L010_STRING_ERROR_GPIO_NOT_EXISTING      \
+		"GPIO not existing"
+	#define  VL53L010_STRING_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED   \
+		"GPIO functionality not supported"
+	#define  VL53L010_STRING_ERROR_CONTROL_INTERFACE                  \
+		"Control Interface Error"
+
+
+	/* Device Specific */
+	#define  VL53L010_STRING_DEVICEERROR_NONE                         \
+		"No Update"
+	#define  VL53L010_STRING_DEVICEERROR_VCSELCONTINUITYTESTFAILURE   \
+		"VCSEL Continuity Test Failure"
+	#define  VL53L010_STRING_DEVICEERROR_VCSELWATCHDOGTESTFAILURE     \
+		"VCSEL Watchdog Test Failure"
+	#define  VL53L010_STRING_DEVICEERROR_NOVHVVALUEFOUND              \
+		"No VHV Value found"
+	#define  VL53L010_STRING_DEVICEERROR_MSRCNOTARGET                 \
+		"MSRC No Target Error"
+	#define  VL53L010_STRING_DEVICEERROR_MSRCMINIMUMSNR                \
+		"MSRC Minimum SNR Error"
+	#define  VL53L010_STRING_DEVICEERROR_MSRCWRAPAROUND                \
+		"MSRC Wraparound Error"
+	#define  VL53L010_STRING_DEVICEERROR_TCC                           \
+		"TCC Error"
+	#define  VL53L010_STRING_DEVICEERROR_RANGEAWRAPAROUND              \
+		"Range A Wraparound Error"
+	#define  VL53L010_STRING_DEVICEERROR_RANGEBWRAPAROUND              \
+		"Range B Wraparound Error"
+	#define  VL53L010_STRING_DEVICEERROR_MINCLIP                       \
+		"Min Clip Error"
+	#define  VL53L010_STRING_DEVICEERROR_RANGECOMPLETE                 \
+		"Range Complete"
+	#define  VL53L010_STRING_DEVICEERROR_ALGOUNDERFLOW                 \
+		"Range Algo Underflow Error"
+	#define  VL53L010_STRING_DEVICEERROR_ALGOOVERFLOW                  \
+		"Range Algo Overlow Error"
+	#define  VL53L010_STRING_DEVICEERROR_FINALSNRLIMIT                 \
+		"Final Minimum SNR Error"
+	#define  VL53L010_STRING_DEVICEERROR_NOTARGETIGNORE                \
+		"No Target Ignore Error"
+	#define  VL53L010_STRING_DEVICEERROR_UNKNOWN                       \
+		"Unknown error code"
+
+
+	/* Check Enable */
+	#define  VL53L010_STRING_CHECKENABLE_SIGMA                         \
+		"SIGMA"
+	#define  VL53L010_STRING_CHECKENABLE_SIGNAL_RATE                    \
+		"SIGNAL RATE"
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/drivers/input/misc/vl53L0/inc/vl53l010_tuning.h b/drivers/input/misc/vl53L0/inc/vl53l010_tuning.h
new file mode 100644
index 000000000000..fe7906044feb
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l010_tuning.h
@@ -0,0 +1,58 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#ifndef _VL53L010_TUNING_H_
+#define _VL53L010_TUNING_H_
+
+#include "vl53l0_def.h"
+#include "vl53l0_platform.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * @brief Internal function used to Program the default tuning settings
+ *
+ * @ingroup VL53L0_general_group
+ * @note This function access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L010_load_tuning_settings(VL53L0_DEV Dev);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VL53L010_TUNING_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_api.h b/drivers/input/misc/vl53L0/inc/vl53l0_api.h
new file mode 100644
index 000000000000..4f6f8020de49
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_api.h
@@ -0,0 +1,1950 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of STMicroelectronics nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+ NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+ IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************/
+
+#ifndef _VL53L0_API_H_
+#define _VL53L0_API_H_
+
+#include "vl53l0_api_strings.h"
+#include "vl53l0_def.h"
+#include "vl53l0_platform.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#ifdef _MSC_VER
+#   ifdef VL53L0_API_EXPORTS
+#       define VL53L0_API  __declspec(dllexport)
+#   else
+#       define VL53L0_API
+#   endif
+#else
+#   define VL53L0_API
+#endif
+
+/** @defgroup VL53L0_cut11_group VL53L0 cut1.1 Function Definition
+ *  @brief    VL53L0 cut1.1 Function Definition
+ *  @{
+ */
+
+/** @defgroup VL53L0_general_group VL53L0 General Functions
+ *  @brief    General functions and definitions
+ *  @{
+ */
+
+/**
+ * @brief Return the VL53L0 PAL Implementation Version
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   pVersion              Pointer to current PAL Implementation Version
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetVersion(VL53L0_Version_t *pVersion);
+
+/**
+ * @brief Return the PAL Specification Version used for the current
+ * implementation.
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   pPalSpecVersion       Pointer to current PAL Specification Version
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetPalSpecVersion(
+	VL53L0_Version_t *pPalSpecVersion);
+
+/**
+ * @brief Reads the Product Revision for a for given Device
+ * This function can be used to distinguish cut1.0 from cut1.1.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                 Device Handle
+ * @param   pProductRevisionMajor  Pointer to Product Revision Major
+ * for a given Device
+ * @param   pProductRevisionMinor  Pointer to Product Revision Minor
+ * for a given Device
+ * @return  VL53L0_ERROR_NONE      Success
+ * @return  "Other error code"  See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetProductRevision(VL53L0_DEV Dev,
+	uint8_t *pProductRevisionMajor, uint8_t *pProductRevisionMinor);
+
+/**
+ * @brief Reads the Device information for given Device
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                 Device Handle
+ * @param   pVL53L0_DeviceInfo  Pointer to current device info for a given
+ *  Device
+ * @return  VL53L0_ERROR_NONE   Success
+ * @return  "Other error code"  See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetDeviceInfo(VL53L0_DEV Dev,
+	VL53L0_DeviceInfo_t *pVL53L0_DeviceInfo);
+
+/**
+ * @brief Read current status of the error register for the selected device
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pDeviceErrorStatus    Pointer to current error code of the device
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetDeviceErrorStatus(VL53L0_DEV Dev,
+	VL53L0_DeviceError * pDeviceErrorStatus);
+
+/**
+ * @brief Human readable Range Status string for a given RangeStatus
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   RangeStatus         The RangeStatus code as stored on
+ * @a VL53L0_RangingMeasurementData_t
+ * @param   pRangeStatusString  The returned RangeStatus string.
+ * @return  VL53L0_ERROR_NONE   Success
+ * @return  "Other error code"  See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetRangeStatusString(uint8_t RangeStatus,
+	char *pRangeStatusString);
+
+/**
+ * @brief Human readable error string for a given Error Code
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   ErrorCode           The error code as stored on ::VL53L0_DeviceError
+ * @param   pDeviceErrorString  The error string corresponding to the ErrorCode
+ * @return  VL53L0_ERROR_NONE   Success
+ * @return  "Other error code"  See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetDeviceErrorString(
+	VL53L0_DeviceError ErrorCode, char *pDeviceErrorString);
+
+/**
+ * @brief Human readable error string for current PAL error status
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   PalErrorCode       The error code as stored on @a VL53L0_Error
+ * @param   pPalErrorString    The error string corresponding to the
+ * PalErrorCode
+ * @return  VL53L0_ERROR_NONE  Success
+ * @return  "Other error code" See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetPalErrorString(VL53L0_Error PalErrorCode,
+	char *pPalErrorString);
+
+/**
+ * @brief Human readable PAL State string
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   PalStateCode          The State code as stored on @a VL53L0_State
+ * @param   pPalStateString       The State string corresponding to the
+ * PalStateCode
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetPalStateString(VL53L0_State PalStateCode,
+	char *pPalStateString);
+
+/**
+ * @brief Reads the internal state of the PAL for a given Device
+ *
+ * @note This function doesn't access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pPalState             Pointer to current state of the PAL for a
+ * given Device
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetPalState(VL53L0_DEV Dev,
+	VL53L0_State * pPalState);
+
+/**
+ * @brief Set the power mode for a given Device
+ * The power mode can be Standby or Idle. Different level of both Standby and
+ * Idle can exists.
+ * This function should not be used when device is in Ranging state.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   PowerMode             The value of the power mode to set.
+ * see ::VL53L0_PowerModes
+ *                                Valid values are:
+ *                                VL53L0_POWERMODE_STANDBY_LEVEL1,
+ *                                VL53L0_POWERMODE_IDLE_LEVEL1
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  VL53L0_ERROR_MODE_NOT_SUPPORTED    This error occurs when PowerMode
+ * is not in the supported list
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetPowerMode(VL53L0_DEV Dev,
+	VL53L0_PowerModes PowerMode);
+
+/**
+ * @brief Get the power mode for a given Device
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pPowerMode            Pointer to the current value of the power
+ * mode. see ::VL53L0_PowerModes
+ *                                Valid values are:
+ *                                VL53L0_POWERMODE_STANDBY_LEVEL1,
+ *                                VL53L0_POWERMODE_IDLE_LEVEL1
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetPowerMode(VL53L0_DEV Dev,
+	VL53L0_PowerModes * pPowerMode);
+
+/**
+ * Set or over-hide part to part calibration offset
+ * \sa VL53L0_DataInit()   VL53L0_GetOffsetCalibrationDataMicroMeter()
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                Device Handle
+ * @param   OffsetCalibrationDataMicroMeter    Offset (microns)
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  "Other error code"                 See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetOffsetCalibrationDataMicroMeter(
+	VL53L0_DEV Dev, int32_t OffsetCalibrationDataMicroMeter);
+
+/**
+ * @brief Get part to part calibration offset
+ *
+ * @par Function Description
+ * Should only be used after a successful call to @a VL53L0_DataInit to backup
+ * device NVM value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                Device Handle
+ * @param   pOffsetCalibrationDataMicroMeter   Return part to part
+ * calibration offset from device (microns)
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  "Other error code"                 See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetOffsetCalibrationDataMicroMeter(
+	VL53L0_DEV Dev, int32_t *pOffsetCalibrationDataMicroMeter);
+
+/**
+ * Set the linearity corrective gain
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                Device Handle
+ * @param   LinearityCorrectiveGain            Linearity corrective
+ * gain in x1000
+ * if value is 1000 then no modification is applied.
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  "Other error code"                 See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetLinearityCorrectiveGain(VL53L0_DEV Dev,
+	int16_t LinearityCorrectiveGain);
+
+/**
+ * @brief Get the linearity corrective gain
+ *
+ * @par Function Description
+ * Should only be used after a successful call to @a VL53L0_DataInit to backup
+ * device NVM value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                Device Handle
+ * @param   pLinearityCorrectiveGain           Pointer to the linearity
+ * corrective gain in x1000
+ * if value is 1000 then no modification is applied.
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  "Other error code"                 See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetLinearityCorrectiveGain(VL53L0_DEV Dev,
+	uint16_t *pLinearityCorrectiveGain);
+
+/**
+ * Set Group parameter Hold state
+ *
+ * @par Function Description
+ * Set or remove device internal group parameter hold
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev      Device Handle
+ * @param   GroupParamHold   Group parameter Hold state to be set (on/off)
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED        Not implemented
+ */
+VL53L0_API VL53L0_Error VL53L0_SetGroupParamHold(VL53L0_DEV Dev,
+	uint8_t GroupParamHold);
+
+/**
+ * @brief Get the maximal distance for actual setup
+ * @par Function Description
+ * Device must be initialized through @a VL53L0_SetParameters() prior calling
+ * this function.
+ *
+ * Any range value more than the value returned is to be considered as
+ * "no target detected" or
+ * "no target in detectable range"\n
+ * @warning The maximal distance depends on the setup
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev      Device Handle
+ * @param   pUpperLimitMilliMeter   The maximal range limit for actual setup
+ * (in millimeter)
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED        Not implemented
+ */
+VL53L0_API VL53L0_Error VL53L0_GetUpperLimitMilliMeter(VL53L0_DEV Dev,
+	uint16_t *pUpperLimitMilliMeter);
+
+
+/**
+ * @brief Get the Total Signal Rate
+ * @par Function Description
+ * This function will return the Total Signal Rate after a good ranging is done.
+ *
+ * @note This function access to Device
+ *
+ * @param   Dev      Device Handle
+ * @param   pTotalSignalRate   Total Signal Rate value in Mega count per second
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_GetTotalSignalRate(VL53L0_DEV Dev,
+	FixPoint1616_t *pTotalSignalRate);
+
+/** @} VL53L0_general_group */
+
+/** @defgroup VL53L0_init_group VL53L0 Init Functions
+ *  @brief    VL53L0 Init Functions
+ *  @{
+ */
+
+/**
+ * @brief Set new device address
+ *
+ * After completion the device will answer to the new address programmed.
+ * This function should be called when several devices are used in parallel
+ * before start programming the sensor.
+ * When a single device us used, there is no need to call this function.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   DeviceAddress         The new Device address
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetDeviceAddress(VL53L0_DEV Dev,
+	uint8_t DeviceAddress);
+
+/**
+ *
+ * @brief One time device initialization
+ *
+ * To be called once and only once after device is brought out of reset
+ * (Chip enable) and booted see @a VL53L0_WaitDeviceBooted()
+ *
+ * @par Function Description
+ * When not used after a fresh device "power up" or reset, it may return
+ * @a #VL53L0_ERROR_CALIBRATION_WARNING meaning wrong calibration data
+ * may have been fetched from device that can result in ranging offset error\n
+ * If application cannot execute device reset or need to run VL53L0_DataInit
+ * multiple time then it  must ensure proper offset calibration saving and
+ * restore on its own by using @a VL53L0_GetOffsetCalibrationData() on first
+ * power up and then @a VL53L0_SetOffsetCalibrationData() in all subsequent init
+ * This function will change the VL53L0_State from VL53L0_STATE_POWERDOWN to
+ * VL53L0_STATE_WAIT_STATICINIT.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_DataInit(VL53L0_DEV Dev);
+
+/**
+ * @brief Set the tuning settings pointer
+ *
+ * This function is used to specify the Tuning settings buffer to be used
+ * for a given device. The buffer contains all the necessary data to permit
+ * the API to write tuning settings.
+ * This function permit to force the usage of either external or internal
+ * tuning settings.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                             Device Handle
+ * @param   pTuningSettingBuffer            Pointer to tuning settings buffer.
+ * @param   UseInternalTuningSettings       Use internal tuning settings value.
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetTuningSettingBuffer(VL53L0_DEV Dev,
+	uint8_t *pTuningSettingBuffer, uint8_t UseInternalTuningSettings);
+
+/**
+ * @brief Get the tuning settings pointer and the internal external switch
+ * value.
+ *
+ * This function is used to get the Tuning settings buffer pointer and the
+ * value.
+ * of the switch to select either external or internal tuning settings.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                        Device Handle
+ * @param   ppTuningSettingBuffer      Pointer to tuning settings buffer.
+ * @param   pUseInternalTuningSettings Pointer to store Use internal tuning
+ *                                     settings value.
+ * @return  VL53L0_ERROR_NONE          Success
+ * @return  "Other error code"         See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetTuningSettingBuffer(VL53L0_DEV Dev,
+	uint8_t **ppTuningSettingBuffer, uint8_t *pUseInternalTuningSettings);
+
+/**
+ * @brief Do basic device init (and eventually patch loading)
+ * This function will change the VL53L0_State from
+ * VL53L0_STATE_WAIT_STATICINIT to VL53L0_STATE_IDLE.
+ * In this stage all default setting will be applied.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_StaticInit(VL53L0_DEV Dev);
+
+/**
+ * @brief Wait for device booted after chip enable (hardware standby)
+ * This function can be run only when VL53L0_State is VL53L0_STATE_POWERDOWN.
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev      Device Handle
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED Not implemented
+ *
+ */
+VL53L0_API VL53L0_Error VL53L0_WaitDeviceBooted(VL53L0_DEV Dev);
+
+/**
+ * @brief Do an hard reset or soft reset (depending on implementation) of the
+ * device \nAfter call of this function, device must be in same state as right
+ * after a power-up sequence.This function will change the VL53L0_State to
+ * VL53L0_STATE_POWERDOWN.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_ResetDevice(VL53L0_DEV Dev);
+
+/** @} VL53L0_init_group */
+
+/** @defgroup VL53L0_parameters_group VL53L0 Parameters Functions
+ *  @brief    Functions used to prepare and setup the device
+ *  @{
+ */
+
+/**
+ * @brief  Prepare device for operation
+ * @par Function Description
+ * Update device with provided parameters
+ * @li Then start ranging operation.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pDeviceParameters     Pointer to store current device parameters.
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetDeviceParameters(VL53L0_DEV Dev,
+	const VL53L0_DeviceParameters_t *pDeviceParameters);
+
+/**
+ * @brief  Retrieve current device parameters
+ * @par Function Description
+ * Get actual parameters of the device
+ * @li Then start ranging operation.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pDeviceParameters     Pointer to store current device parameters.
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetDeviceParameters(VL53L0_DEV Dev,
+	VL53L0_DeviceParameters_t *pDeviceParameters);
+
+/**
+ * @brief  Set a new device mode
+ * @par Function Description
+ * Set device to a new mode (ranging, histogram ...)
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   DeviceMode            New device mode to apply
+ *                                Valid values are:
+ *                                VL53L0_DEVICEMODE_SINGLE_RANGING
+ *                                VL53L0_DEVICEMODE_CONTINUOUS_RANGING
+ *                                VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING
+ *                                VL53L0_DEVICEMODE_SINGLE_HISTOGRAM
+ *                                VL53L0_HISTOGRAMMODE_REFERENCE_ONLY
+ *                                VL53L0_HISTOGRAMMODE_RETURN_ONLY
+ *                                VL53L0_HISTOGRAMMODE_BOTH
+ *
+ *
+ * @return  VL53L0_ERROR_NONE               Success
+ * @return  VL53L0_ERROR_MODE_NOT_SUPPORTED This error occurs when DeviceMode is
+ *                                          not in the supported list
+ */
+VL53L0_API VL53L0_Error VL53L0_SetDeviceMode(VL53L0_DEV Dev,
+	VL53L0_DeviceModes DeviceMode);
+
+/**
+ * @brief  Get current new device mode
+ * @par Function Description
+ * Get actual mode of the device(ranging, histogram ...)
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pDeviceMode           Pointer to current apply mode value
+ *                                Valid values are:
+ *                                VL53L0_DEVICEMODE_SINGLE_RANGING
+ *                                VL53L0_DEVICEMODE_CONTINUOUS_RANGING
+ *                                VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING
+ *                                VL53L0_DEVICEMODE_SINGLE_HISTOGRAM
+ *                                VL53L0_HISTOGRAMMODE_REFERENCE_ONLY
+ *                                VL53L0_HISTOGRAMMODE_RETURN_ONLY
+ *                                VL53L0_HISTOGRAMMODE_BOTH
+ *
+ * @return  VL53L0_ERROR_NONE                   Success
+ * @return  VL53L0_ERROR_MODE_NOT_SUPPORTED     This error occurs when
+ * DeviceMode is not in the supported list
+ */
+VL53L0_API VL53L0_Error VL53L0_GetDeviceMode(VL53L0_DEV Dev,
+	VL53L0_DeviceModes * pDeviceMode);
+
+/**
+ * @brief  Sets the resolution of range measurements.
+ * @par Function Description
+ * Set resolution of range measurements to either 0.25mm if
+ * fraction enabled or 1mm if not enabled.
+ *
+ * @note This function Accesses the device
+ *
+ * @param   Dev               Device Handle
+ * @param   Enable            Enable high resolution
+ *
+ * @return  VL53L0_ERROR_NONE               Success
+ * @return  "Other error code"              See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetRangeFractionEnable(VL53L0_DEV Dev,
+	uint8_t Enable);
+
+/**
+ * @brief  Gets the fraction enable parameter indicating the resolution of
+ * range measurements.
+ *
+ * @par Function Description
+ * Gets the fraction enable state, which translates to the resolution of
+ * range measurements as follows :Enabled:=0.25mm resolution,
+ * Not Enabled:=1mm resolution.
+ *
+ * @note This function Accesses the device
+ *
+ * @param   Dev        Device Handle
+ * @param   pEnable    Output Parameter reporting the fraction enable state.
+ *
+ * @return  VL53L0_ERROR_NONE                   Success
+ * @return  "Other error code"                  See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetFractionEnable(VL53L0_DEV Dev,
+	uint8_t *pEnable);
+
+/**
+ * @brief  Set a new Histogram mode
+ * @par Function Description
+ * Set device to a new Histogram mode
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   HistogramMode         New device mode to apply
+ *                                Valid values are:
+ *                                VL53L0_HISTOGRAMMODE_DISABLED
+ *                                VL53L0_DEVICEMODE_SINGLE_HISTOGRAM
+ *                                VL53L0_HISTOGRAMMODE_REFERENCE_ONLY
+ *                                VL53L0_HISTOGRAMMODE_RETURN_ONLY
+ *                                VL53L0_HISTOGRAMMODE_BOTH
+ *
+ * @return  VL53L0_ERROR_NONE                   Success
+ * @return  VL53L0_ERROR_MODE_NOT_SUPPORTED     This error occurs when
+ * HistogramMode is not in the supported list
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetHistogramMode(VL53L0_DEV Dev,
+	VL53L0_HistogramModes HistogramMode);
+
+/**
+ * @brief  Get current new device mode
+ * @par Function Description
+ * Get current Histogram mode of a Device
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pHistogramMode        Pointer to current Histogram Mode value
+ *                                Valid values are:
+ *                                VL53L0_HISTOGRAMMODE_DISABLED
+ *                                VL53L0_DEVICEMODE_SINGLE_HISTOGRAM
+ *                                VL53L0_HISTOGRAMMODE_REFERENCE_ONLY
+ *                                VL53L0_HISTOGRAMMODE_RETURN_ONLY
+ *                                VL53L0_HISTOGRAMMODE_BOTH
+ * @return  VL53L0_ERROR_NONE     Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetHistogramMode(VL53L0_DEV Dev,
+	VL53L0_HistogramModes * pHistogramMode);
+
+/**
+ * @brief Set Ranging Timing Budget in microseconds
+ *
+ * @par Function Description
+ * Defines the maximum time allowed by the user to the device to run a
+ * full ranging sequence for the current mode (ranging, histogram, ASL ...)
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                Device Handle
+ * @param MeasurementTimingBudgetMicroSeconds  Max measurement time in
+ * microseconds.
+ *                                   Valid values are:
+ *                                   >= 17000 microsecs when wraparound enabled
+ *                                   >= 12000 microsecs when wraparound disabled
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned if
+ MeasurementTimingBudgetMicroSeconds out of range
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetMeasurementTimingBudgetMicroSeconds(
+	VL53L0_DEV Dev, uint32_t MeasurementTimingBudgetMicroSeconds);
+
+/**
+ * @brief Get Ranging Timing Budget in microseconds
+ *
+ * @par Function Description
+ * Returns the programmed the maximum time allowed by the user to the
+ * device to run a full ranging sequence for the current mode
+ * (ranging, histogram, ASL ...)
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                    Device Handle
+ * @param   pMeasurementTimingBudgetMicroSeconds   Max measurement time in
+ * microseconds.
+ *                                   Valid values are:
+ *                                   >= 17000 microsecs when wraparound enabled
+ *                                   >= 12000 microsecs when wraparound disabled
+ * @return  VL53L0_ERROR_NONE                      Success
+ * @return  "Other error code"                     See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetMeasurementTimingBudgetMicroSeconds(
+	VL53L0_DEV Dev, uint32_t *pMeasurementTimingBudgetMicroSeconds);
+
+/**
+ * @brief Gets the VCSEL pulse period.
+ *
+ * @par Function Description
+ * This function retrieves the VCSEL pulse period for the given period type.
+ *
+ * @note This function Accesses the device
+ *
+ * @param   Dev                      Device Handle
+ * @param   VcselPeriodType          VCSEL period identifier (pre-range|final).
+ * @param   pVCSELPulsePeriod        Pointer to VCSEL period value.
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS  Error VcselPeriodType parameter not
+ *                                       supported.
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetVcselPulsePeriod(VL53L0_DEV Dev,
+	VL53L0_VcselPeriod VcselPeriodType, uint8_t *pVCSELPulsePeriod);
+
+/**
+ * @brief Sets the VCSEL pulse period.
+ *
+ * @par Function Description
+ * This function retrieves the VCSEL pulse period for the given period type.
+ *
+ * @note This function Accesses the device
+ *
+ * @param   Dev                       Device Handle
+ * @param   VcselPeriodType	      VCSEL period identifier (pre-range|final).
+ * @param   VCSELPulsePeriod          VCSEL period value
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS  Error VcselPeriodType parameter not
+ *                                       supported.
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetVcselPulsePeriod(VL53L0_DEV Dev,
+	VL53L0_VcselPeriod VcselPeriodType, uint8_t VCSELPulsePeriod);
+
+/**
+ * @brief Sets the (on/off) state of a requested sequence step.
+ *
+ * @par Function Description
+ * This function enables/disables a requested sequence step.
+ *
+ * @note This function Accesses the device
+ *
+ * @param   Dev                          Device Handle
+ * @param   SequenceStepId	         Sequence step identifier.
+ * @param   SequenceStepEnabled          Demanded state {0=Off,1=On}
+ *                                       is enabled.
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS  Error SequenceStepId parameter not
+ *                                       supported.
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetSequenceStepEnable(VL53L0_DEV Dev,
+	VL53L0_SequenceStepId SequenceStepId, uint8_t SequenceStepEnabled);
+
+/**
+ * @brief Gets the (on/off) state of a requested sequence step.
+ *
+ * @par Function Description
+ * This function retrieves the state of a requested sequence step, i.e. on/off.
+ *
+ * @note This function Accesses the device
+ *
+ * @param   Dev                    Device Handle
+ * @param   SequenceStepId         Sequence step identifier.
+ * @param   pSequenceStepEnabled   Out parameter reporting if the sequence step
+ *                                 is enabled {0=Off,1=On}.
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS  Error SequenceStepId parameter not
+ *                                       supported.
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetSequenceStepEnable(VL53L0_DEV Dev,
+	VL53L0_SequenceStepId SequenceStepId, uint8_t *pSequenceStepEnabled);
+
+/**
+ * @brief Gets the (on/off) state of all sequence steps.
+ *
+ * @par Function Description
+ * This function retrieves the state of all sequence step in the scheduler.
+ *
+ * @note This function Accesses the device
+ *
+ * @param   Dev                          Device Handle
+ * @param   pSchedulerSequenceSteps      Pointer to struct containing result.
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetSequenceStepEnables(VL53L0_DEV Dev,
+	VL53L0_SchedulerSequenceSteps_t *pSchedulerSequenceSteps);
+
+/**
+ * @brief Sets the timeout of a requested sequence step.
+ *
+ * @par Function Description
+ * This function sets the timeout of a requested sequence step.
+ *
+ * @note This function Accesses the device
+ *
+ * @param   Dev                          Device Handle
+ * @param   SequenceStepId               Sequence step identifier.
+ * @param   TimeOutMilliSecs             Demanded timeout
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS  Error SequenceStepId parameter not
+ *                                       supported.
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetSequenceStepTimeout(VL53L0_DEV Dev,
+	VL53L0_SequenceStepId SequenceStepId, FixPoint1616_t TimeOutMilliSecs);
+
+/**
+ * @brief Gets the timeout of a requested sequence step.
+ *
+ * @par Function Description
+ * This function retrieves the timeout of a requested sequence step.
+ *
+ * @note This function Accesses the device
+ *
+ * @param   Dev                          Device Handle
+ * @param   SequenceStepId               Sequence step identifier.
+ * @param   pTimeOutMilliSecs            Timeout value.
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS  Error SequenceStepId parameter not
+ *                                       supported.
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetSequenceStepTimeout(VL53L0_DEV Dev,
+	VL53L0_SequenceStepId SequenceStepId,
+	FixPoint1616_t *pTimeOutMilliSecs);
+
+/**
+ * @brief Gets number of sequence steps managed by the API.
+ *
+ * @par Function Description
+ * This function retrieves the number of sequence steps currently managed
+ * by the API
+ *
+ * @note This function Accesses the device
+ *
+ * @param   Dev                          Device Handle
+ * @param   pNumberOfSequenceSteps       Out parameter reporting the number of
+ *                                       sequence steps.
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetNumberOfSequenceSteps(VL53L0_DEV Dev,
+	uint8_t *pNumberOfSequenceSteps);
+
+/**
+ * @brief Gets the name of a given sequence step.
+ *
+ * @par Function Description
+ * This function retrieves the name of sequence steps corresponding to
+ * SequenceStepId.
+ *
+ * @note This function doesn't Accesses the device
+ *
+ * @param   SequenceStepId               Sequence step identifier.
+ * @param   pSequenceStepsString         Pointer to Info string
+ *
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetSequenceStepsInfo(
+	VL53L0_SequenceStepId SequenceStepId, char *pSequenceStepsString);
+
+/**
+ * Program continuous mode Inter-Measurement period in milliseconds
+ *
+ * @par Function Description
+ * When trying to set too short time return  INVALID_PARAMS minimal value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                  Device Handle
+ * @param   InterMeasurementPeriodMilliSeconds   Inter-Measurement Period in ms.
+ * @return  VL53L0_ERROR_NONE                    Success
+ * @return  "Other error code"                   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetInterMeasurementPeriodMilliSeconds(
+	VL53L0_DEV Dev, uint32_t InterMeasurementPeriodMilliSeconds);
+
+/**
+ * Get continuous mode Inter-Measurement period in milliseconds
+ *
+ * @par Function Description
+ * When trying to set too short time return  INVALID_PARAMS minimal value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                                  Device Handle
+ * @param   pInterMeasurementPeriodMilliSeconds  Pointer to programmed
+ *  Inter-Measurement Period in milliseconds.
+ * @return  VL53L0_ERROR_NONE                    Success
+ * @return  "Other error code"                   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetInterMeasurementPeriodMilliSeconds(
+	VL53L0_DEV Dev, uint32_t *pInterMeasurementPeriodMilliSeconds);
+
+/**
+ * @brief Enable/Disable Cross talk compensation feature
+ *
+ * @note This function is not Implemented.
+ * Enable/Disable Cross Talk by set to zero the Cross Talk value
+ * by using @a VL53L0_SetXTalkCompensationRateMegaCps().
+ *
+ * @param   Dev                       Device Handle
+ * @param   XTalkCompensationEnable   Cross talk compensation
+ *  to be set 0=disabled else = enabled
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED   Not implemented
+ */
+VL53L0_API VL53L0_Error VL53L0_SetXTalkCompensationEnable(VL53L0_DEV Dev,
+	uint8_t XTalkCompensationEnable);
+
+/**
+ * @brief Get Cross talk compensation rate
+ *
+ * @note This function is not Implemented.
+ * Enable/Disable Cross Talk by set to zero the Cross Talk value by
+ * using @a VL53L0_SetXTalkCompensationRateMegaCps().
+ *
+ * @param   Dev                        Device Handle
+ * @param   pXTalkCompensationEnable   Pointer to the Cross talk compensation
+ *  state 0=disabled or 1 = enabled
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED   Not implemented
+ */
+VL53L0_API VL53L0_Error VL53L0_GetXTalkCompensationEnable(VL53L0_DEV Dev,
+	uint8_t *pXTalkCompensationEnable);
+
+/**
+ * @brief Set Cross talk compensation rate
+ *
+ * @par Function Description
+ * Set Cross talk compensation rate.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                            Device Handle
+ * @param   XTalkCompensationRateMegaCps   Compensation rate in
+ *  Mega counts per second (16.16 fix point) see datasheet for details
+ * @return  VL53L0_ERROR_NONE              Success
+ * @return  "Other error code"             See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetXTalkCompensationRateMegaCps(VL53L0_DEV Dev,
+	FixPoint1616_t XTalkCompensationRateMegaCps);
+
+/**
+ * @brief Get Cross talk compensation rate
+ *
+ * @par Function Description
+ * Get Cross talk compensation rate.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                            Device Handle
+ * @param   pXTalkCompensationRateMegaCps  Pointer to Compensation rate
+ in Mega counts per second (16.16 fix point) see datasheet for details
+ * @return  VL53L0_ERROR_NONE              Success
+ * @return  "Other error code"             See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetXTalkCompensationRateMegaCps(VL53L0_DEV Dev,
+	FixPoint1616_t *pXTalkCompensationRateMegaCps);
+
+/**
+ * @brief Set Reference Calibration Parameters
+ *
+ * @par Function Description
+ * Set Reference Calibration Parameters.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                            Device Handle
+ * @param   VhvSettings                    Parameter for VHV
+ * @param   PhaseCal                       Parameter for PhaseCal
+ * @return  VL53L0_ERROR_NONE              Success
+ * @return  "Other error code"             See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetRefCalibration(VL53L0_DEV Dev,
+	uint8_t VhvSettings, uint8_t PhaseCal);
+
+/**
+ * @brief Get Reference Calibration Parameters
+ *
+ * @par Function Description
+ * Get Reference Calibration Parameters.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                            Device Handle
+ * @param   pVhvSettings                   Pointer to VHV parameter
+ * @param   pPhaseCal                      Pointer to PhaseCal Parameter
+ * @return  VL53L0_ERROR_NONE              Success
+ * @return  "Other error code"             See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetRefCalibration(VL53L0_DEV Dev,
+	uint8_t *pVhvSettings, uint8_t *pPhaseCal);
+
+/**
+ * @brief  Get the number of the check limit managed by a given Device
+ *
+ * @par Function Description
+ * This function give the number of the check limit managed by the Device
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   pNumberOfLimitCheck           Pointer to the number of check limit.
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetNumberOfLimitCheck(
+	uint16_t *pNumberOfLimitCheck);
+
+/**
+ * @brief  Return a description string for a given limit check number
+ *
+ * @par Function Description
+ * This function returns a description string for a given limit check number.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID
+ (0<= LimitCheckId < VL53L0_GetNumberOfLimitCheck() ).
+ * @param   pLimitCheckString             Pointer to the
+ description string of the given check limit.
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is
+ returned when LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetLimitCheckInfo(VL53L0_DEV Dev,
+	uint16_t LimitCheckId, char *pLimitCheckString);
+
+/**
+ * @brief  Return a the Status of the specified check limit
+ *
+ * @par Function Description
+ * This function returns the Status of the specified check limit.
+ * The value indicate if the check is fail or not.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID
+ (0<= LimitCheckId < VL53L0_GetNumberOfLimitCheck() ).
+ * @param   pLimitCheckStatus             Pointer to the
+ Limit Check Status of the given check limit.
+ * LimitCheckStatus :
+ * 0 the check is not fail
+ * 1 the check if fail or not enabled
+ *
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is
+ returned when LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetLimitCheckStatus(VL53L0_DEV Dev,
+	uint16_t LimitCheckId, uint8_t *pLimitCheckStatus);
+
+/**
+ * @brief  Enable/Disable a specific limit check
+ *
+ * @par Function Description
+ * This function Enable/Disable a specific limit check.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID
+ *  (0<= LimitCheckId < VL53L0_GetNumberOfLimitCheck() ).
+ * @param   LimitCheckEnable              if 1 the check limit
+ *  corresponding to LimitCheckId is Enabled
+ *                                        if 0 the check limit
+ *  corresponding to LimitCheckId is disabled
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned
+ *  when LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetLimitCheckEnable(VL53L0_DEV Dev,
+	uint16_t LimitCheckId, uint8_t LimitCheckEnable);
+
+/**
+ * @brief  Get specific limit check enable state
+ *
+ * @par Function Description
+ * This function get the enable state of a specific limit check.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID
+ *  (0<= LimitCheckId < VL53L0_GetNumberOfLimitCheck() ).
+ * @param   pLimitCheckEnable             Pointer to the check limit enable
+ * value.
+ *  if 1 the check limit
+ *        corresponding to LimitCheckId is Enabled
+ *  if 0 the check limit
+ *        corresponding to LimitCheckId is disabled
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned
+ *  when LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetLimitCheckEnable(VL53L0_DEV Dev,
+	uint16_t LimitCheckId, uint8_t *pLimitCheckEnable);
+
+/**
+ * @brief  Set a specific limit check value
+ *
+ * @par Function Description
+ * This function set a specific limit check value.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID
+ *  (0<= LimitCheckId < VL53L0_GetNumberOfLimitCheck() ).
+ * @param   LimitCheckValue               Limit check Value for a given
+ * LimitCheckId
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned when either
+ *  LimitCheckId or LimitCheckValue value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetLimitCheckValue(VL53L0_DEV Dev,
+	uint16_t LimitCheckId, FixPoint1616_t LimitCheckValue);
+
+/**
+ * @brief  Get a specific limit check value
+ *
+ * @par Function Description
+ * This function get a specific limit check value from device then it updates
+ * internal values and check enables.
+ * The limit check is identified with the LimitCheckId.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID
+ *  (0<= LimitCheckId < VL53L0_GetNumberOfLimitCheck() ).
+ * @param   pLimitCheckValue              Pointer to Limit
+ *  check Value for a given LimitCheckId.
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned
+ *  when LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetLimitCheckValue(VL53L0_DEV Dev,
+	uint16_t LimitCheckId, FixPoint1616_t *pLimitCheckValue);
+
+/**
+ * @brief  Get the current value of the signal used for the limit check
+ *
+ * @par Function Description
+ * This function get a the current value of the signal used for the limit check.
+ * To obtain the latest value you should run a ranging before.
+ * The value reported is linked to the limit check identified with the
+ * LimitCheckId.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   LimitCheckId                  Limit Check ID
+ *  (0<= LimitCheckId < VL53L0_GetNumberOfLimitCheck() ).
+ * @param   pLimitCheckCurrent            Pointer to current Value for a
+ * given LimitCheckId.
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned when
+ * LimitCheckId value is out of range.
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetLimitCheckCurrent(VL53L0_DEV Dev,
+	uint16_t LimitCheckId, FixPoint1616_t *pLimitCheckCurrent);
+
+/**
+ * @brief  Enable (or disable) Wrap around Check
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                    Device Handle
+ * @param   WrapAroundCheckEnable  Wrap around Check to be set
+ *                                 0=disabled, other = enabled
+ * @return  VL53L0_ERROR_NONE      Success
+ * @return  "Other error code"     See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetWrapAroundCheckEnable(VL53L0_DEV Dev,
+		uint8_t WrapAroundCheckEnable);
+
+/**
+ * @brief  Get setup of Wrap around Check
+ *
+ * @par Function Description
+ * This function get the wrapAround check enable parameters
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                     Device Handle
+ * @param   pWrapAroundCheckEnable  Pointer to the Wrap around Check state
+ *                                  0=disabled or 1 = enabled
+ * @return  VL53L0_ERROR_NONE       Success
+ * @return  "Other error code"      See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetWrapAroundCheckEnable(VL53L0_DEV Dev,
+		uint8_t *pWrapAroundCheckEnable);
+
+/**
+ * @brief   Set Dmax Calibration Parameters for a given device
+ * When one of the parameter is zero, this function will get parameter
+ * from NVM.
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                    Device Handle
+ * @param   RangeMilliMeter        Calibration Distance
+ * @param   SignalRateRtnMegaCps   Signal rate return read at CalDistance
+ * @return  VL53L0_ERROR_NONE      Success
+ * @return  "Other error code"     See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetDmaxCalParameters(VL53L0_DEV Dev,
+		uint16_t RangeMilliMeter, FixPoint1616_t SignalRateRtnMegaCps);
+
+/**
+ * @brief  Get Dmax Calibration Parameters for a given device
+ *
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                     Device Handle
+ * @param   pRangeMilliMeter        Pointer to Calibration Distance
+ * @param   pSignalRateRtnMegaCps   Pointer to Signal rate return
+ * @return  VL53L0_ERROR_NONE       Success
+ * @return  "Other error code"      See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetDmaxCalParameters(VL53L0_DEV Dev,
+	uint16_t *pRangeMilliMeter, FixPoint1616_t *pSignalRateRtnMegaCps);
+
+/** @} VL53L0_parameters_group */
+
+/** @defgroup VL53L0_measurement_group VL53L0 Measurement Functions
+ *  @brief    Functions used for the measurements
+ *  @{
+ */
+
+/**
+ * @brief Single shot measurement.
+ *
+ * @par Function Description
+ * Perform simple measurement sequence (Start measure, Wait measure to end,
+ * and returns when measurement is done).
+ * Once function returns, user can get valid data by calling
+ * VL53L0_GetRangingMeasurement or VL53L0_GetHistogramMeasurement
+ * depending on defined measurement mode
+ * User should Clear the interrupt in case this are enabled by using the
+ * function VL53L0_ClearInterruptMask().
+ *
+ * @warning This function is a blocking function
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                  Device Handle
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_PerformSingleMeasurement(VL53L0_DEV Dev);
+
+/**
+ * @brief Perform Reference Calibration
+ *
+ * @details Perform a reference calibration of the Device.
+ * This function should be run from time to time before doing
+ * a ranging measurement.
+ * This function will launch a special ranging measurement, so
+ * if interrupt are enable an interrupt will be done.
+ * This function will clear the interrupt generated automatically.
+ *
+ * @warning This function is a blocking function
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                  Device Handle
+ * @param   pVhvSettings         Pointer to vhv settings parameter.
+ * @param   pPhaseCal            Pointer to PhaseCal parameter.
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_PerformRefCalibration(VL53L0_DEV Dev,
+	uint8_t *pVhvSettings, uint8_t *pPhaseCal);
+
+/**
+ * @brief Perform XTalk Measurement
+ *
+ * @details Measures the current cross talk from glass in front
+ * of the sensor.
+ * This functions performs a histogram measurement and uses the results
+ * to measure the crosstalk. For the function to be successful, there
+ * must be no target in front of the sensor.
+ *
+ * @warning This function is a blocking function
+ *
+ * @warning This function is not supported when the final range
+ * vcsel clock period is set below 10 PCLKS.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                  Device Handle
+ * @param   TimeoutMs            Histogram measurement duration.
+ * @param   pXtalkPerSpad        Output parameter containing the crosstalk
+ * measurement result, in MCPS/Spad. Format fixpoint 16:16.
+ * @param   pAmbientTooHigh      Output parameter which indicate that
+ * pXtalkPerSpad is not good if the Ambient is too high.
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS vcsel clock period not supported
+ * for this operation. Must not be less than 10PCLKS.
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_PerformXTalkMeasurement(VL53L0_DEV Dev,
+	uint32_t TimeoutMs, FixPoint1616_t *pXtalkPerSpad,
+	uint8_t *pAmbientTooHigh);
+
+/**
+ * @brief Perform XTalk Calibration
+ *
+ * @details Perform a XTalk calibration of the Device.
+ * This function will launch a ranging measurement, if interrupts
+ * are enabled an interrupt will be done.
+ * This function will clear the interrupt generated automatically.
+ * This function will program a new value for the XTalk compensation
+ * and it will enable the cross talk before exit.
+ * This function will disable the VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD.
+ *
+ * @warning This function is a blocking function
+ *
+ * @note This function Access to the device
+ *
+ * @note This function change the device mode to
+ * VL53L0_DEVICEMODE_SINGLE_RANGING
+ *
+ * @param   Dev                  Device Handle
+ * @param   XTalkCalDistance     XTalkCalDistance value used for the XTalk
+ * computation.
+ * @param   pXTalkCompensationRateMegaCps  Pointer to new
+ * XTalkCompensation value.
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_PerformXTalkCalibration(VL53L0_DEV Dev,
+	FixPoint1616_t XTalkCalDistance,
+	FixPoint1616_t *pXTalkCompensationRateMegaCps);
+
+/**
+ * @brief Perform Offset Calibration
+ *
+ * @details Perform a Offset calibration of the Device.
+ * This function will launch a ranging measurement, if interrupts are
+ * enabled an interrupt will be done.
+ * This function will clear the interrupt generated automatically.
+ * This function will program a new value for the Offset calibration value
+ * This function will disable the VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD.
+ *
+ * @warning This function is a blocking function
+ *
+ * @note This function Access to the device
+ *
+ * @note This function does not change the device mode.
+ *
+ * @param   Dev                  Device Handle
+ * @param   CalDistanceMilliMeter     Calibration distance value used for the
+ * offset compensation.
+ * @param   pOffsetMicroMeter  Pointer to new Offset value computed by the
+ * function.
+ *
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_PerformOffsetCalibration(VL53L0_DEV Dev,
+	FixPoint1616_t CalDistanceMilliMeter, int32_t *pOffsetMicroMeter);
+
+/**
+ * @brief Start device measurement
+ *
+ * @details Started measurement will depend on device parameters set through
+ * @a VL53L0_SetParameters()
+ * This is a non-blocking function.
+ * This function will change the VL53L0_State from VL53L0_STATE_IDLE to
+ * VL53L0_STATE_RUNNING.
+ *
+ * @note This function Access to the device
+ *
+
+ * @param   Dev                  Device Handle
+ * @return  VL53L0_ERROR_NONE                  Success
+ * @return  VL53L0_ERROR_MODE_NOT_SUPPORTED    This error occurs when
+ * DeviceMode programmed with @a VL53L0_SetDeviceMode is not in the supported
+ * list:
+ *                                   Supported mode are:
+ *                                   VL53L0_DEVICEMODE_SINGLE_RANGING,
+ *                                   VL53L0_DEVICEMODE_CONTINUOUS_RANGING,
+ *                                   VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING
+ * @return  VL53L0_ERROR_TIME_OUT    Time out on start measurement
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_StartMeasurement(VL53L0_DEV Dev);
+
+/**
+ * @brief Stop device measurement
+ *
+ * @details Will set the device in standby mode at end of current measurement\n
+ *          Not necessary in single mode as device shall return automatically
+ *          in standby mode at end of measurement.
+ *          This function will change the VL53L0_State from VL53L0_STATE_RUNNING
+ *          to VL53L0_STATE_IDLE.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                  Device Handle
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_StopMeasurement(VL53L0_DEV Dev);
+
+/**
+ * @brief Return Measurement Data Ready
+ *
+ * @par Function Description
+ * This function indicate that a measurement data is ready.
+ * This function check if interrupt mode is used then check is done accordingly.
+ * If perform function clear the interrupt, this function will not work,
+ * like in case of @a VL53L0_PerformSingleRangingMeasurement().
+ * The previous function is blocking function, VL53L0_GetMeasurementDataReady
+ * is used for non-blocking capture.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                    Device Handle
+ * @param   pMeasurementDataReady  Pointer to Measurement Data Ready.
+ *  0=data not ready, 1 = data ready
+ * @return  VL53L0_ERROR_NONE      Success
+ * @return  "Other error code"     See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetMeasurementDataReady(VL53L0_DEV Dev,
+	uint8_t *pMeasurementDataReady);
+
+/**
+ * @brief Wait for device ready for a new measurement command.
+ * Blocking function.
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev      Device Handle
+ * @param   MaxLoop    Max Number of polling loop (timeout).
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED   Not implemented
+ */
+VL53L0_API VL53L0_Error VL53L0_WaitDeviceReadyForNewMeasurement(VL53L0_DEV Dev,
+	uint32_t MaxLoop);
+
+/**
+ * @brief Retrieve the Reference Signal after a measurements
+ *
+ * @par Function Description
+ * Get Reference Signal from last successful Ranging measurement
+ * This function return a valid value after that you call the
+ * @a VL53L0_GetRangingMeasurementData().
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                      Device Handle
+ * @param   pMeasurementRefSignal    Pointer to the Ref Signal to fill up.
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"       See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetMeasurementRefSignal(VL53L0_DEV Dev,
+	FixPoint1616_t *pMeasurementRefSignal);
+
+/**
+ * @brief Retrieve the measurements from device for a given setup
+ *
+ * @par Function Description
+ * Get data from last successful Ranging measurement
+ * @warning USER should take care about  @a VL53L0_GetNumberOfROIZones()
+ * before get data.
+ * PAL will fill a NumberOfROIZones times the corresponding data
+ * structure used in the measurement function.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                      Device Handle
+ * @param   pRangingMeasurementData  Pointer to the data structure to fill up.
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"       See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetRangingMeasurementData(VL53L0_DEV Dev,
+	VL53L0_RangingMeasurementData_t *pRangingMeasurementData);
+
+/**
+ * @brief Retrieve the measurements from device for a given setup
+ *
+ * @par Function Description
+ * Get data from last successful Histogram measurement
+ * @warning USER should take care about  @a VL53L0_GetNumberOfROIZones()
+ * before get data.
+ * PAL will fill a NumberOfROIZones times the corresponding data structure
+ * used in the measurement function.
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev                         Device Handle
+ * @param   pHistogramMeasurementData   Pointer to the histogram data structure.
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED   Not implemented
+ */
+VL53L0_API VL53L0_Error VL53L0_GetHistogramMeasurementData(VL53L0_DEV Dev,
+	VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData);
+
+/**
+ * @brief Performs a single ranging measurement and retrieve the ranging
+ * measurement data
+ *
+ * @par Function Description
+ * This function will change the device mode to VL53L0_DEVICEMODE_SINGLE_RANGING
+ * with @a VL53L0_SetDeviceMode(),
+ * It performs measurement with @a VL53L0_PerformSingleMeasurement()
+ * It get data from last successful Ranging measurement with
+ * @a VL53L0_GetRangingMeasurementData.
+ * Finally it clear the interrupt with @a VL53L0_ClearInterruptMask().
+ *
+ * @note This function Access to the device
+ *
+ * @note This function change the device mode to
+ * VL53L0_DEVICEMODE_SINGLE_RANGING
+ *
+ * @param   Dev                       Device Handle
+ * @param   pRangingMeasurementData   Pointer to the data structure to fill up.
+ * @return  VL53L0_ERROR_NONE         Success
+ * @return  "Other error code"        See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_PerformSingleRangingMeasurement(VL53L0_DEV Dev,
+	VL53L0_RangingMeasurementData_t *pRangingMeasurementData);
+
+/**
+ * @brief Performs a single histogram measurement and retrieve the histogram
+ * measurement data
+ *   Is equivalent to VL53L0_PerformSingleMeasurement +
+ *   VL53L0_GetHistogramMeasurementData
+ *
+ * @par Function Description
+ * Get data from last successful Ranging measurement.
+ * This function will clear the interrupt in case of these are enabled.
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev                        Device Handle
+ * @param   pHistogramMeasurementData  Pointer to the data structure to fill up.
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED   Not implemented
+ */
+VL53L0_API VL53L0_Error VL53L0_PerformSingleHistogramMeasurement(VL53L0_DEV Dev,
+	VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData);
+
+/**
+ * @brief Set the number of ROI Zones to be used for a specific Device
+ *
+ * @par Function Description
+ * Set the number of ROI Zones to be used for a specific Device.
+ * The programmed value should be less than the max number of ROI Zones given
+ * with @a VL53L0_GetMaxNumberOfROIZones().
+ * This version of API manage only one zone.
+ *
+ * @param   Dev                           Device Handle
+ * @param   NumberOfROIZones              Number of ROI Zones to be used for a
+ *  specific Device.
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  VL53L0_ERROR_INVALID_PARAMS   This error is returned if
+ * NumberOfROIZones != 1
+ */
+VL53L0_API VL53L0_Error VL53L0_SetNumberOfROIZones(VL53L0_DEV Dev,
+	uint8_t NumberOfROIZones);
+
+/**
+ * @brief Get the number of ROI Zones managed by the Device
+ *
+ * @par Function Description
+ * Get number of ROI Zones managed by the Device
+ * USER should take care about  @a VL53L0_GetNumberOfROIZones()
+ * before get data after a perform measurement.
+ * PAL will fill a NumberOfROIZones times the corresponding data
+ * structure used in the measurement function.
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   pNumberOfROIZones     Pointer to the Number of ROI Zones value.
+ * @return  VL53L0_ERROR_NONE     Success
+ */
+VL53L0_API VL53L0_Error VL53L0_GetNumberOfROIZones(VL53L0_DEV Dev,
+	uint8_t *pNumberOfROIZones);
+
+/**
+ * @brief Get the Maximum number of ROI Zones managed by the Device
+ *
+ * @par Function Description
+ * Get Maximum number of ROI Zones managed by the Device.
+ *
+ * @note This function doesn't Access to the device
+ *
+ * @param   Dev                    Device Handle
+ * @param   pMaxNumberOfROIZones   Pointer to the Maximum Number
+ *  of ROI Zones value.
+ * @return  VL53L0_ERROR_NONE      Success
+ */
+VL53L0_API VL53L0_Error VL53L0_GetMaxNumberOfROIZones(VL53L0_DEV Dev,
+	uint8_t *pMaxNumberOfROIZones);
+
+/** @} VL53L0_measurement_group */
+
+/** @defgroup VL53L0_interrupt_group VL53L0 Interrupt Functions
+ *  @brief    Functions used for interrupt managements
+ *  @{
+ */
+
+/**
+ * @brief Set the configuration of GPIO pin for a given device
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   Pin                   ID of the GPIO Pin
+ * @param   Functionality         Select Pin functionality.
+ *  Refer to ::VL53L0_GpioFunctionality
+ * @param   DeviceMode            Device Mode associated to the Gpio.
+ * @param   Polarity              Set interrupt polarity. Active high
+ *   or active low see ::VL53L0_InterruptPolarity
+ * @return  VL53L0_ERROR_NONE                            Success
+ * @return  VL53L0_ERROR_GPIO_NOT_EXISTING               Only Pin=0 is accepted.
+ * @return  VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED    This error occurs
+ * when Functionality programmed is not in the supported list:
+ *                             Supported value are:
+ *                             VL53L0_GPIOFUNCTIONALITY_OFF,
+ *                             VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW,
+ *                             VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH,
+ VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT,
+ *                               VL53L0_GPIOFUNCTIONALITY_NEW_MEASURE_READY
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetGpioConfig(VL53L0_DEV Dev, uint8_t Pin,
+	VL53L0_DeviceModes DeviceMode, VL53L0_GpioFunctionality Functionality,
+	VL53L0_InterruptPolarity Polarity);
+
+/**
+ * @brief Get current configuration for GPIO pin for a given device
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                   Device Handle
+ * @param   Pin                   ID of the GPIO Pin
+ * @param   pDeviceMode           Pointer to Device Mode associated to the Gpio.
+ * @param   pFunctionality        Pointer to Pin functionality.
+ *  Refer to ::VL53L0_GpioFunctionality
+ * @param   pPolarity             Pointer to interrupt polarity.
+ *  Active high or active low see ::VL53L0_InterruptPolarity
+ * @return  VL53L0_ERROR_NONE                            Success
+ * @return  VL53L0_ERROR_GPIO_NOT_EXISTING               Only Pin=0 is accepted.
+ * @return  VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED   This error occurs
+ * when Functionality programmed is not in the supported list:
+ *                      Supported value are:
+ *                      VL53L0_GPIOFUNCTIONALITY_OFF,
+ *                      VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW,
+ *                      VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH,
+ *                      VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT,
+ *                      VL53L0_GPIOFUNCTIONALITY_NEW_MEASURE_READY
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetGpioConfig(VL53L0_DEV Dev, uint8_t Pin,
+	VL53L0_DeviceModes * pDeviceMode,
+	VL53L0_GpioFunctionality * pFunctionality,
+	VL53L0_InterruptPolarity * pPolarity);
+
+/**
+ * @brief Set low and high Interrupt thresholds for a given mode
+ * (ranging, ALS, ...) for a given device
+ *
+ * @par Function Description
+ * Set low and high Interrupt thresholds for a given mode (ranging, ALS, ...)
+ * for a given device
+ *
+ * @note This function Access to the device
+ *
+ * @note DeviceMode is ignored for the current device
+ *
+ * @param   Dev              Device Handle
+ * @param   DeviceMode       Device Mode for which change thresholds
+ * @param   ThresholdLow     Low threshold (mm, lux ..., depending on the mode)
+ * @param   ThresholdHigh    High threshold (mm, lux ..., depending on the mode)
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetInterruptThresholds(VL53L0_DEV Dev,
+	VL53L0_DeviceModes DeviceMode, FixPoint1616_t ThresholdLow,
+	FixPoint1616_t ThresholdHigh);
+
+/**
+ * @brief  Get high and low Interrupt thresholds for a given mode
+ *  (ranging, ALS, ...) for a given device
+ *
+ * @par Function Description
+ * Get high and low Interrupt thresholds for a given mode (ranging, ALS, ...)
+ * for a given device
+ *
+ * @note This function Access to the device
+ *
+ * @note DeviceMode is ignored for the current device
+ *
+ * @param   Dev              Device Handle
+ * @param   DeviceMode       Device Mode from which read thresholds
+ * @param   pThresholdLow    Low threshold (mm, lux ..., depending on the mode)
+ * @param   pThresholdHigh   High threshold (mm, lux ..., depending on the mode)
+ * @return  VL53L0_ERROR_NONE   Success
+ * @return  "Other error code"  See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetInterruptThresholds(VL53L0_DEV Dev,
+	VL53L0_DeviceModes DeviceMode, FixPoint1616_t *pThresholdLow,
+	FixPoint1616_t *pThresholdHigh);
+
+/**
+ * @brief Return device stop completion status
+ *
+ * @par Function Description
+ * Returns stop completiob status.
+ * User shall call this function after a stop command
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                    Device Handle
+ * @param   pStopStatus            Pointer to status variable to update
+ * @return  VL53L0_ERROR_NONE      Success
+ * @return  "Other error code"     See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetStopCompletedStatus(VL53L0_DEV Dev,
+	uint32_t *pStopStatus);
+
+
+/**
+ * @brief Clear given system interrupt condition
+ *
+ * @par Function Description
+ * Clear given interrupt(s).
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                  Device Handle
+ * @param   InterruptMask        Mask of interrupts to clear
+ * @return  VL53L0_ERROR_NONE    Success
+ * @return  VL53L0_ERROR_INTERRUPT_NOT_CLEARED    Cannot clear interrupts
+ *
+ * @return  "Other error code"   See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_ClearInterruptMask(VL53L0_DEV Dev,
+	uint32_t InterruptMask);
+
+/**
+ * @brief Return device interrupt status
+ *
+ * @par Function Description
+ * Returns currently raised interrupts by the device.
+ * User shall be able to activate/deactivate interrupts through
+ * @a VL53L0_SetGpioConfig()
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                    Device Handle
+ * @param   pInterruptMaskStatus   Pointer to status variable to update
+ * @return  VL53L0_ERROR_NONE      Success
+ * @return  "Other error code"     See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetInterruptMaskStatus(VL53L0_DEV Dev,
+	uint32_t *pInterruptMaskStatus);
+
+/**
+ * @brief Configure ranging interrupt reported to system
+ *
+ * @note This function is not Implemented
+ *
+ * @param   Dev                  Device Handle
+ * @param   InterruptMask         Mask of interrupt to Enable/disable
+ *  (0:interrupt disabled or 1: interrupt enabled)
+ * @return  VL53L0_ERROR_NOT_IMPLEMENTED   Not implemented
+ */
+VL53L0_API VL53L0_Error VL53L0_EnableInterruptMask(VL53L0_DEV Dev,
+	uint32_t InterruptMask);
+
+/** @} VL53L0_interrupt_group */
+
+/** @defgroup VL53L0_SPADfunctions_group VL53L0 SPAD Functions
+ *  @brief    Functions used for SPAD managements
+ *  @{
+ */
+
+/**
+ * @brief  Set the SPAD Ambient Damper Threshold value
+ *
+ * @par Function Description
+ * This function set the SPAD Ambient Damper Threshold value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   SpadAmbientDamperThreshold    SPAD Ambient Damper Threshold value
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetSpadAmbientDamperThreshold(VL53L0_DEV Dev,
+	uint16_t SpadAmbientDamperThreshold);
+
+/**
+ * @brief  Get the current SPAD Ambient Damper Threshold value
+ *
+ * @par Function Description
+ * This function get the SPAD Ambient Damper Threshold value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   pSpadAmbientDamperThreshold   Pointer to programmed
+ *                                        SPAD Ambient Damper Threshold value
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetSpadAmbientDamperThreshold(VL53L0_DEV Dev,
+	uint16_t *pSpadAmbientDamperThreshold);
+
+/**
+ * @brief  Set the SPAD Ambient Damper Factor value
+ *
+ * @par Function Description
+ * This function set the SPAD Ambient Damper Factor value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   SpadAmbientDamperFactor       SPAD Ambient Damper Factor value
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetSpadAmbientDamperFactor(VL53L0_DEV Dev,
+	uint16_t SpadAmbientDamperFactor);
+
+/**
+ * @brief  Get the current SPAD Ambient Damper Factor value
+ *
+ * @par Function Description
+ * This function get the SPAD Ambient Damper Factor value
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                           Device Handle
+ * @param   pSpadAmbientDamperFactor      Pointer to programmed SPAD Ambient
+ * Damper Factor value
+ * @return  VL53L0_ERROR_NONE             Success
+ * @return  "Other error code"            See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetSpadAmbientDamperFactor(VL53L0_DEV Dev,
+	uint16_t *pSpadAmbientDamperFactor);
+
+/**
+ * @brief Performs Reference Spad Management
+ *
+ * @par Function Description
+ * The reference SPAD initialization procedure determines the minimum amount
+ * of reference spads to be enables to achieve a target reference signal rate
+ * and should be performed once during initialization.
+ *
+ * @note This function Access to the device
+ *
+ * @note This function change the device mode to
+ * VL53L0_DEVICEMODE_SINGLE_RANGING
+ *
+ * @param   Dev                          Device Handle
+ * @param   refSpadCount                 Reports ref Spad Count
+ * @param   isApertureSpads              Reports if spads are of type
+ *                                       aperture or non-aperture.
+ *                                       1:=aperture, 0:=Non-Aperture
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  VL53L0_ERROR_REF_SPAD_INIT   Error in the Ref Spad procedure.
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_PerformRefSpadManagement(VL53L0_DEV Dev,
+	uint32_t *refSpadCount, uint8_t *isApertureSpads);
+
+/**
+ * @brief Applies Reference SPAD configuration
+ *
+ * @par Function Description
+ * This function applies a given number of reference spads, identified as
+ * either Aperture or Non-Aperture.
+ * The requested spad count and type are stored within the device specific
+ * parameters data for access by the host.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                          Device Handle
+ * @param   refSpadCount                 Number of ref spads.
+ * @param   isApertureSpads              Defines if spads are of type
+ *                                       aperture or non-aperture.
+ *                                       1:=aperture, 0:=Non-Aperture
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  VL53L0_ERROR_REF_SPAD_INIT   Error in the in the reference
+ *                                       spad configuration.
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_SetReferenceSpads(VL53L0_DEV Dev,
+	uint32_t refSpadCount, uint8_t isApertureSpads);
+
+/**
+ * @brief Retrieves SPAD configuration
+ *
+ * @par Function Description
+ * This function retrieves the current number of applied reference spads
+ * and also their type : Aperture or Non-Aperture.
+ *
+ * @note This function Access to the device
+ *
+ * @param   Dev                          Device Handle
+ * @param   refSpadCount                 Number ref Spad Count
+ * @param   isApertureSpads              Reports if spads are of type
+ *                                       aperture or non-aperture.
+ *                                       1:=aperture, 0:=Non-Aperture
+ * @return  VL53L0_ERROR_NONE            Success
+ * @return  VL53L0_ERROR_REF_SPAD_INIT   Error in the in the reference
+ *                                       spad configuration.
+ * @return  "Other error code"           See ::VL53L0_Error
+ */
+VL53L0_API VL53L0_Error VL53L0_GetReferenceSpads(VL53L0_DEV Dev,
+	uint32_t *refSpadCount, uint8_t *isApertureSpads);
+
+/** @} VL53L0_SPADfunctions_group */
+
+/** @} VL53L0_cut11_group */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VL53L0_API_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_api_calibration.h b/drivers/input/misc/vl53L0/inc/vl53l0_api_calibration.h
new file mode 100644
index 000000000000..df9b43987eb5
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_api_calibration.h
@@ -0,0 +1,85 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+	* Redistributions of source code must retain the above copyright
+	  notice, this list of conditions and the following disclaimer.
+	* Redistributions in binary form must reproduce the above copyright
+	  notice, this list of conditions and the following disclaimer in the
+	  documentation and/or other materials provided with the distribution.
+	* Neither the name of STMicroelectronics nor the
+	  names of its contributors may be used to endorse or promote products
+	  derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#ifndef _VL53L0_API_CALIBRATION_H_
+#define _VL53L0_API_CALIBRATION_H_
+
+#include "vl53l0_def.h"
+#include "vl53l0_platform.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+VL53L0_Error VL53L0_perform_xtalk_calibration(VL53L0_DEV Dev,
+		FixPoint1616_t XTalkCalDistance,
+		FixPoint1616_t *pXTalkCompensationRateMegaCps);
+
+VL53L0_Error VL53L0_perform_offset_calibration(VL53L0_DEV Dev,
+		FixPoint1616_t CalDistanceMilliMeter,
+		int32_t *pOffsetMicroMeter);
+
+VL53L0_Error VL53L0_set_offset_calibration_data_micro_meter(VL53L0_DEV Dev,
+		int32_t OffsetCalibrationDataMicroMeter);
+
+VL53L0_Error VL53L0_get_offset_calibration_data_micro_meter(VL53L0_DEV Dev,
+		int32_t *pOffsetCalibrationDataMicroMeter);
+
+VL53L0_Error VL53L0_apply_offset_adjustment(VL53L0_DEV Dev);
+
+VL53L0_Error VL53L0_perform_ref_spad_management(VL53L0_DEV Dev,
+		uint32_t *refSpadCount, uint8_t *isApertureSpads);
+
+VL53L0_Error VL53L0_set_reference_spads(VL53L0_DEV Dev,
+		uint32_t count, uint8_t isApertureSpads);
+
+VL53L0_Error VL53L0_get_reference_spads(VL53L0_DEV Dev,
+		uint32_t *pSpadCount, uint8_t *pIsApertureSpads);
+
+VL53L0_Error VL53L0_perform_phase_calibration(VL53L0_DEV Dev,
+	uint8_t *pPhaseCal, const uint8_t get_data_enable,
+	const uint8_t restore_config);
+
+VL53L0_Error VL53L0_perform_ref_calibration(VL53L0_DEV Dev,
+	uint8_t *pVhvSettings, uint8_t *pPhaseCal, uint8_t get_data_enable);
+
+VL53L0_Error VL53L0_set_ref_calibration(VL53L0_DEV Dev,
+		uint8_t VhvSettings, uint8_t PhaseCal);
+
+VL53L0_Error VL53L0_get_ref_calibration(VL53L0_DEV Dev,
+		uint8_t *pVhvSettings, uint8_t *pPhaseCal);
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VL53L0_API_CALIBRATION_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_api_core.h b/drivers/input/misc/vl53L0/inc/vl53l0_api_core.h
new file mode 100644
index 000000000000..21cf9edec0e0
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_api_core.h
@@ -0,0 +1,108 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#ifndef _VL53L0_API_CORE_H_
+#define _VL53L0_API_CORE_H_
+
+#include "vl53l0_def.h"
+#include "vl53l0_platform.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+VL53L0_Error VL53L0_reverse_bytes(uint8_t *data, uint32_t size);
+
+VL53L0_Error VL53L0_measurement_poll_for_completion(VL53L0_DEV Dev);
+
+uint8_t VL53L0_encode_vcsel_period(uint8_t vcsel_period_pclks);
+
+uint8_t VL53L0_decode_vcsel_period(uint8_t vcsel_period_reg);
+
+uint32_t VL53L0_isqrt(uint32_t num);
+
+uint32_t VL53L0_quadrature_sum(uint32_t a, uint32_t b);
+
+VL53L0_Error VL53L0_get_info_from_device(VL53L0_DEV Dev, uint8_t option);
+
+VL53L0_Error VL53L0_set_vcsel_pulse_period(VL53L0_DEV Dev,
+	VL53L0_VcselPeriod VcselPeriodType, uint8_t VCSELPulsePeriodPCLK);
+
+VL53L0_Error VL53L0_get_vcsel_pulse_period(VL53L0_DEV Dev,
+	VL53L0_VcselPeriod VcselPeriodType, uint8_t *pVCSELPulsePeriodPCLK);
+
+uint32_t VL53L0_decode_timeout(uint16_t encoded_timeout);
+
+VL53L0_Error get_sequence_step_timeout(VL53L0_DEV Dev,
+			VL53L0_SequenceStepId SequenceStepId,
+			uint32_t *pTimeOutMicroSecs);
+
+VL53L0_Error set_sequence_step_timeout(VL53L0_DEV Dev,
+			VL53L0_SequenceStepId SequenceStepId,
+			uint32_t TimeOutMicroSecs);
+
+VL53L0_Error VL53L0_set_measurement_timing_budget_micro_seconds(VL53L0_DEV Dev,
+	uint32_t MeasurementTimingBudgetMicroSeconds);
+
+VL53L0_Error VL53L0_get_measurement_timing_budget_micro_seconds(VL53L0_DEV Dev,
+		uint32_t *pMeasurementTimingBudgetMicroSeconds);
+
+VL53L0_Error VL53L0_load_tuning_settings(VL53L0_DEV Dev,
+		uint8_t *pTuningSettingBuffer);
+
+VL53L0_Error VL53L0_calc_sigma_estimate(VL53L0_DEV Dev,
+		VL53L0_RangingMeasurementData_t *pRangingMeasurementData,
+		FixPoint1616_t *pSigmaEstimate, uint32_t *pDmax_mm);
+
+VL53L0_Error VL53L0_get_total_xtalk_rate(VL53L0_DEV Dev,
+	VL53L0_RangingMeasurementData_t *pRangingMeasurementData,
+	FixPoint1616_t *ptotal_xtalk_rate_mcps);
+
+VL53L0_Error VL53L0_get_total_signal_rate(VL53L0_DEV Dev,
+	VL53L0_RangingMeasurementData_t *pRangingMeasurementData,
+	FixPoint1616_t *ptotal_signal_rate_mcps);
+
+VL53L0_Error VL53L0_get_pal_range_status(VL53L0_DEV Dev,
+		 uint8_t DeviceRangeStatus,
+		 FixPoint1616_t SignalRate,
+		 uint16_t EffectiveSpadRtnCount,
+		 VL53L0_RangingMeasurementData_t *pRangingMeasurementData,
+		 uint8_t *pPalRangeStatus);
+
+uint32_t VL53L0_calc_timeout_mclks(VL53L0_DEV Dev,
+	uint32_t timeout_period_us, uint8_t vcsel_period_pclks);
+
+uint16_t VL53L0_encode_timeout(uint32_t timeout_macro_clks);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VL53L0_API_CORE_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_api_histogram.h b/drivers/input/misc/vl53L0/inc/vl53l0_api_histogram.h
new file mode 100644
index 000000000000..c2438a8cd79b
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_api_histogram.h
@@ -0,0 +1,70 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#ifndef _VL53L0_API_HISTOGRAM_H_
+#define _VL53L0_API_HISTOGRAM_H_
+
+#include "vl53l0_def.h"
+#include "vl53l0_platform.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+VL53L0_Error VL53L0_confirm_measurement_start(VL53L0_DEV Dev);
+
+VL53L0_Error VL53L0_set_histogram_mode(VL53L0_DEV Dev,
+	VL53L0_HistogramModes HistogramMode);
+
+VL53L0_Error VL53L0_get_histogram_mode(VL53L0_DEV Dev,
+	VL53L0_HistogramModes *pHistogramMode);
+
+VL53L0_Error VL53L0_start_histogram_measurement(VL53L0_DEV Dev,
+	VL53L0_HistogramModes histoMode,
+	uint32_t count);
+
+VL53L0_Error VL53L0_perform_single_histogram_measurement(VL53L0_DEV Dev,
+	VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData);
+
+VL53L0_Error VL53L0_get_histogram_measurement_data(VL53L0_DEV Dev,
+	VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData);
+
+VL53L0_Error VL53L0_read_histo_measurement(VL53L0_DEV Dev,
+	uint32_t *histoData, uint32_t offset, VL53L0_HistogramModes histoMode);
+
+VL53L0_Error VL53L0_perform_xtalk_measurement(VL53L0_DEV dev,
+	uint32_t timeout_ms, FixPoint1616_t *pxtalk_per_spad,
+	uint8_t *pambient_too_high);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VL53L0_API_HISTOGRAM_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_api_ranging.h b/drivers/input/misc/vl53L0/inc/vl53l0_api_ranging.h
new file mode 100644
index 000000000000..ba0bd03fe71f
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_api_ranging.h
@@ -0,0 +1,47 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#ifndef _VL53L0_API_RANGING_H_
+#define _VL53L0_API_RANGING_H_
+
+#include "vl53l0_def.h"
+#include "vl53l0_platform.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VL53L0_API_RANGING_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_api_strings.h b/drivers/input/misc/vl53L0/inc/vl53l0_api_strings.h
new file mode 100644
index 000000000000..2bb6a1e8ea33
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_api_strings.h
@@ -0,0 +1,277 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#ifndef VL53L0_API_STRINGS_H_
+#define VL53L0_API_STRINGS_H_
+
+#include "vl53l0_def.h"
+#include "vl53l0_platform.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+VL53L0_Error VL53L0_get_device_info(VL53L0_DEV Dev,
+			VL53L0_DeviceInfo_t *pVL53L0_DeviceInfo);
+
+VL53L0_Error VL53L0_get_device_error_string(VL53L0_DeviceError ErrorCode,
+		char *pDeviceErrorString);
+
+VL53L0_Error VL53L0_get_range_status_string(uint8_t RangeStatus,
+		char *pRangeStatusString);
+
+VL53L0_Error VL53L0_get_pal_error_string(VL53L0_Error PalErrorCode,
+		char *pPalErrorString);
+
+VL53L0_Error VL53L0_get_pal_state_string(VL53L0_State PalStateCode,
+		char *pPalStateString);
+
+VL53L0_Error VL53L0_get_sequence_steps_info(
+		VL53L0_SequenceStepId SequenceStepId,
+		char *pSequenceStepsString);
+
+VL53L0_Error VL53L0_get_limit_check_info(VL53L0_DEV Dev, uint16_t LimitCheckId,
+	char *pLimitCheckString);
+
+
+#ifdef USE_EMPTY_STRING
+	#define  VL53L0_STRING_DEVICE_INFO_NAME                             ""
+	#define  VL53L0_STRING_DEVICE_INFO_NAME_TS0                         ""
+	#define  VL53L0_STRING_DEVICE_INFO_NAME_TS1                         ""
+	#define  VL53L0_STRING_DEVICE_INFO_NAME_TS2                         ""
+	#define  VL53L0_STRING_DEVICE_INFO_NAME_ES1                         ""
+	#define  VL53L0_STRING_DEVICE_INFO_TYPE                             ""
+
+	/* PAL ERROR strings */
+	#define  VL53L0_STRING_ERROR_NONE                                   ""
+	#define  VL53L0_STRING_ERROR_CALIBRATION_WARNING                    ""
+	#define  VL53L0_STRING_ERROR_MIN_CLIPPED                            ""
+	#define  VL53L0_STRING_ERROR_UNDEFINED                              ""
+	#define  VL53L0_STRING_ERROR_INVALID_PARAMS                         ""
+	#define  VL53L0_STRING_ERROR_NOT_SUPPORTED                          ""
+	#define  VL53L0_STRING_ERROR_RANGE_ERROR                            ""
+	#define  VL53L0_STRING_ERROR_TIME_OUT                               ""
+	#define  VL53L0_STRING_ERROR_MODE_NOT_SUPPORTED                     ""
+	#define  VL53L0_STRING_ERROR_BUFFER_TOO_SMALL                       ""
+	#define  VL53L0_STRING_ERROR_GPIO_NOT_EXISTING                      ""
+	#define  VL53L0_STRING_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED       ""
+	#define  VL53L0_STRING_ERROR_CONTROL_INTERFACE                      ""
+	#define  VL53L0_STRING_ERROR_INVALID_COMMAND                        ""
+	#define  VL53L0_STRING_ERROR_DIVISION_BY_ZERO                       ""
+	#define  VL53L0_STRING_ERROR_REF_SPAD_INIT                          ""
+	#define  VL53L0_STRING_ERROR_NOT_IMPLEMENTED                        ""
+
+	#define  VL53L0_STRING_UNKNOW_ERROR_CODE                            ""
+
+
+
+	/* Range Status */
+	#define  VL53L0_STRING_RANGESTATUS_NONE                             ""
+	#define  VL53L0_STRING_RANGESTATUS_RANGEVALID                       ""
+	#define  VL53L0_STRING_RANGESTATUS_SIGMA                            ""
+	#define  VL53L0_STRING_RANGESTATUS_SIGNAL                           ""
+	#define  VL53L0_STRING_RANGESTATUS_MINRANGE                         ""
+	#define  VL53L0_STRING_RANGESTATUS_PHASE                            ""
+	#define  VL53L0_STRING_RANGESTATUS_HW                               ""
+
+
+	/* Range Status */
+	#define  VL53L0_STRING_STATE_POWERDOWN                              ""
+	#define  VL53L0_STRING_STATE_WAIT_STATICINIT                        ""
+	#define  VL53L0_STRING_STATE_STANDBY                                ""
+	#define  VL53L0_STRING_STATE_IDLE                                   ""
+	#define  VL53L0_STRING_STATE_RUNNING                                ""
+	#define  VL53L0_STRING_STATE_UNKNOWN                                ""
+	#define  VL53L0_STRING_STATE_ERROR                                  ""
+
+
+	/* Device Specific */
+	#define  VL53L0_STRING_DEVICEERROR_NONE                             ""
+	#define  VL53L0_STRING_DEVICEERROR_VCSELCONTINUITYTESTFAILURE       ""
+	#define  VL53L0_STRING_DEVICEERROR_VCSELWATCHDOGTESTFAILURE         ""
+	#define  VL53L0_STRING_DEVICEERROR_NOVHVVALUEFOUND                  ""
+	#define  VL53L0_STRING_DEVICEERROR_MSRCNOTARGET                     ""
+	#define  VL53L0_STRING_DEVICEERROR_SNRCHECK                         ""
+	#define  VL53L0_STRING_DEVICEERROR_RANGEPHASECHECK                  ""
+	#define  VL53L0_STRING_DEVICEERROR_SIGMATHRESHOLDCHECK              ""
+	#define  VL53L0_STRING_DEVICEERROR_TCC                              ""
+	#define  VL53L0_STRING_DEVICEERROR_PHASECONSISTENCY                 ""
+	#define  VL53L0_STRING_DEVICEERROR_MINCLIP                          ""
+	#define  VL53L0_STRING_DEVICEERROR_RANGECOMPLETE                    ""
+	#define  VL53L0_STRING_DEVICEERROR_ALGOUNDERFLOW                    ""
+	#define  VL53L0_STRING_DEVICEERROR_ALGOOVERFLOW                     ""
+	#define  VL53L0_STRING_DEVICEERROR_RANGEIGNORETHRESHOLD             ""
+	#define  VL53L0_STRING_DEVICEERROR_UNKNOWN                          ""
+
+	/* Check Enable */
+	#define  VL53L0_STRING_CHECKENABLE_SIGMA_FINAL_RANGE                ""
+	#define  VL53L0_STRING_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE          ""
+	#define  VL53L0_STRING_CHECKENABLE_SIGNAL_REF_CLIP                  ""
+	#define  VL53L0_STRING_CHECKENABLE_RANGE_IGNORE_THRESHOLD           ""
+
+	/* Sequence Step */
+	#define  VL53L0_STRING_SEQUENCESTEP_TCC                             ""
+	#define  VL53L0_STRING_SEQUENCESTEP_DSS                             ""
+	#define  VL53L0_STRING_SEQUENCESTEP_MSRC                            ""
+	#define  VL53L0_STRING_SEQUENCESTEP_PRE_RANGE                       ""
+	#define  VL53L0_STRING_SEQUENCESTEP_FINAL_RANGE                     ""
+#else
+	#define  VL53L0_STRING_DEVICE_INFO_NAME          "VL53L0 cut1.0"
+	#define  VL53L0_STRING_DEVICE_INFO_NAME_TS0      "VL53L0 TS0"
+	#define  VL53L0_STRING_DEVICE_INFO_NAME_TS1      "VL53L0 TS1"
+	#define  VL53L0_STRING_DEVICE_INFO_NAME_TS2      "VL53L0 TS2"
+	#define  VL53L0_STRING_DEVICE_INFO_NAME_ES1      "VL53L0 ES1 or later"
+	#define  VL53L0_STRING_DEVICE_INFO_TYPE          "VL53L0"
+
+	/* PAL ERROR strings */
+	#define  VL53L0_STRING_ERROR_NONE \
+			"No Error"
+	#define  VL53L0_STRING_ERROR_CALIBRATION_WARNING \
+			"Calibration Warning Error"
+	#define  VL53L0_STRING_ERROR_MIN_CLIPPED \
+			"Min clipped error"
+	#define  VL53L0_STRING_ERROR_UNDEFINED \
+			"Undefined error"
+	#define  VL53L0_STRING_ERROR_INVALID_PARAMS \
+			"Invalid parameters error"
+	#define  VL53L0_STRING_ERROR_NOT_SUPPORTED \
+			"Not supported error"
+	#define  VL53L0_STRING_ERROR_RANGE_ERROR \
+			"Range error"
+	#define  VL53L0_STRING_ERROR_TIME_OUT \
+			"Time out error"
+	#define  VL53L0_STRING_ERROR_MODE_NOT_SUPPORTED \
+			"Mode not supported error"
+	#define  VL53L0_STRING_ERROR_BUFFER_TOO_SMALL \
+			"Buffer too small"
+	#define  VL53L0_STRING_ERROR_GPIO_NOT_EXISTING \
+			"GPIO not existing"
+	#define  VL53L0_STRING_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED \
+			"GPIO funct not supported"
+	#define  VL53L0_STRING_ERROR_INTERRUPT_NOT_CLEARED \
+			"Interrupt not Cleared"
+	#define  VL53L0_STRING_ERROR_CONTROL_INTERFACE \
+			"Control Interface Error"
+	#define  VL53L0_STRING_ERROR_INVALID_COMMAND \
+			"Invalid Command Error"
+	#define  VL53L0_STRING_ERROR_DIVISION_BY_ZERO \
+			"Division by zero Error"
+	#define  VL53L0_STRING_ERROR_REF_SPAD_INIT \
+			"Reference Spad Init Error"
+	#define  VL53L0_STRING_ERROR_NOT_IMPLEMENTED \
+			"Not implemented error"
+
+	#define  VL53L0_STRING_UNKNOW_ERROR_CODE \
+			"Unknown Error Code"
+
+
+
+	/* Range Status */
+	#define  VL53L0_STRING_RANGESTATUS_NONE                 "No Update"
+	#define  VL53L0_STRING_RANGESTATUS_RANGEVALID           "Range Valid"
+	#define  VL53L0_STRING_RANGESTATUS_SIGMA                "Sigma Fail"
+	#define  VL53L0_STRING_RANGESTATUS_SIGNAL               "Signal Fail"
+	#define  VL53L0_STRING_RANGESTATUS_MINRANGE             "Min Range Fail"
+	#define  VL53L0_STRING_RANGESTATUS_PHASE                "Phase Fail"
+	#define  VL53L0_STRING_RANGESTATUS_HW                   "Hardware Fail"
+
+
+	/* Range Status */
+	#define  VL53L0_STRING_STATE_POWERDOWN               "POWERDOWN State"
+	#define  VL53L0_STRING_STATE_WAIT_STATICINIT \
+			"Wait for staticinit State"
+	#define  VL53L0_STRING_STATE_STANDBY                 "STANDBY State"
+	#define  VL53L0_STRING_STATE_IDLE                    "IDLE State"
+	#define  VL53L0_STRING_STATE_RUNNING                 "RUNNING State"
+	#define  VL53L0_STRING_STATE_UNKNOWN                 "UNKNOWN State"
+	#define  VL53L0_STRING_STATE_ERROR                   "ERROR State"
+
+
+	/* Device Specific */
+	#define  VL53L0_STRING_DEVICEERROR_NONE                   "No Update"
+	#define  VL53L0_STRING_DEVICEERROR_VCSELCONTINUITYTESTFAILURE \
+			"VCSEL Continuity Test Failure"
+	#define  VL53L0_STRING_DEVICEERROR_VCSELWATCHDOGTESTFAILURE \
+			"VCSEL Watchdog Test Failure"
+	#define  VL53L0_STRING_DEVICEERROR_NOVHVVALUEFOUND \
+			"No VHV Value found"
+	#define  VL53L0_STRING_DEVICEERROR_MSRCNOTARGET \
+			"MSRC No Target Error"
+	#define  VL53L0_STRING_DEVICEERROR_SNRCHECK \
+			"SNR Check Exit"
+	#define  VL53L0_STRING_DEVICEERROR_RANGEPHASECHECK \
+			"Range Phase Check Error"
+	#define  VL53L0_STRING_DEVICEERROR_SIGMATHRESHOLDCHECK \
+			"Sigma Threshold Check Error"
+	#define  VL53L0_STRING_DEVICEERROR_TCC \
+			"TCC Error"
+	#define  VL53L0_STRING_DEVICEERROR_PHASECONSISTENCY \
+			"Phase Consistency Error"
+	#define  VL53L0_STRING_DEVICEERROR_MINCLIP \
+			"Min Clip Error"
+	#define  VL53L0_STRING_DEVICEERROR_RANGECOMPLETE \
+			"Range Complete"
+	#define  VL53L0_STRING_DEVICEERROR_ALGOUNDERFLOW \
+			"Range Algo Underflow Error"
+	#define  VL53L0_STRING_DEVICEERROR_ALGOOVERFLOW \
+			"Range Algo Overlow Error"
+	#define  VL53L0_STRING_DEVICEERROR_RANGEIGNORETHRESHOLD \
+			"Range Ignore Threshold Error"
+	#define  VL53L0_STRING_DEVICEERROR_UNKNOWN \
+			"Unknown error code"
+
+	/* Check Enable */
+	#define  VL53L0_STRING_CHECKENABLE_SIGMA_FINAL_RANGE \
+			"SIGMA FINAL RANGE"
+	#define  VL53L0_STRING_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE \
+			"SIGNAL RATE FINAL RANGE"
+	#define  VL53L0_STRING_CHECKENABLE_SIGNAL_REF_CLIP \
+			"SIGNAL REF CLIP"
+	#define  VL53L0_STRING_CHECKENABLE_RANGE_IGNORE_THRESHOLD \
+			"RANGE IGNORE THRESHOLD"
+	#define  VL53L0_STRING_CHECKENABLE_SIGNAL_RATE_MSRC \
+			"SIGNAL RATE MSRC"
+	#define  VL53L0_STRING_CHECKENABLE_SIGNAL_RATE_PRE_RANGE \
+			"SIGNAL RATE PRE RANGE"
+
+	/* Sequence Step */
+	#define  VL53L0_STRING_SEQUENCESTEP_TCC                   "TCC"
+	#define  VL53L0_STRING_SEQUENCESTEP_DSS                   "DSS"
+	#define  VL53L0_STRING_SEQUENCESTEP_MSRC                  "MSRC"
+	#define  VL53L0_STRING_SEQUENCESTEP_PRE_RANGE             "PRE RANGE"
+	#define  VL53L0_STRING_SEQUENCESTEP_FINAL_RANGE           "FINAL RANGE"
+#endif /* USE_EMPTY_STRING */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_def.h b/drivers/input/misc/vl53L0/inc/vl53l0_def.h
new file mode 100644
index 000000000000..009715a5924f
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_def.h
@@ -0,0 +1,663 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+	* Redistributions of source code must retain the above copyright
+	  notice, this list of conditions and the following disclaimer.
+	* Redistributions in binary form must reproduce the above copyright
+	  notice, this list of conditions and the following disclaimer in the
+	  documentation and/or other materials provided with the distribution.
+	* Neither the name of STMicroelectronics nor the
+	  names of its contributors may be used to endorse or promote products
+	  derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+/**
+ * @file VL53L0_def.h
+ *
+ * @brief Type definitions for VL53L0 API.
+ *
+ */
+
+
+#ifndef _VL53L0_DEF_H_
+#define _VL53L0_DEF_H_
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @defgroup VL53L0_globaldefine_group VL53L0 Defines
+ *	@brief	  VL53L0 Defines
+ *	@{
+ */
+
+
+/** PAL SPECIFICATION major version */
+#define VL53L010_SPECIFICATION_VER_MAJOR   1
+/** PAL SPECIFICATION minor version */
+#define VL53L010_SPECIFICATION_VER_MINOR   2
+/** PAL SPECIFICATION sub version */
+#define VL53L010_SPECIFICATION_VER_SUB	   7
+/** PAL SPECIFICATION sub version */
+#define VL53L010_SPECIFICATION_VER_REVISION 1440
+
+/** VL53L0 PAL IMPLEMENTATION major version */
+#define VL53L010_IMPLEMENTATION_VER_MAJOR	1
+/** VL53L0 PAL IMPLEMENTATION minor version */
+#define VL53L010_IMPLEMENTATION_VER_MINOR	0
+/** VL53L0 PAL IMPLEMENTATION sub version */
+#define VL53L010_IMPLEMENTATION_VER_SUB		9
+/** VL53L0 PAL IMPLEMENTATION sub version */
+#define VL53L010_IMPLEMENTATION_VER_REVISION	3673
+
+/** PAL SPECIFICATION major version */
+#define VL53L0_SPECIFICATION_VER_MAJOR	 1
+/** PAL SPECIFICATION minor version */
+#define VL53L0_SPECIFICATION_VER_MINOR	 2
+/** PAL SPECIFICATION sub version */
+#define VL53L0_SPECIFICATION_VER_SUB	 7
+/** PAL SPECIFICATION sub version */
+#define VL53L0_SPECIFICATION_VER_REVISION 1440
+
+/** VL53L0 PAL IMPLEMENTATION major version */
+#define VL53L0_IMPLEMENTATION_VER_MAJOR	  1
+/** VL53L0 PAL IMPLEMENTATION minor version */
+#define VL53L0_IMPLEMENTATION_VER_MINOR	  1
+/** VL53L0 PAL IMPLEMENTATION sub version */
+#define VL53L0_IMPLEMENTATION_VER_SUB	  20
+/** VL53L0 PAL IMPLEMENTATION sub version */
+#define VL53L0_IMPLEMENTATION_VER_REVISION	  4606
+#define VL53L0_DEFAULT_MAX_LOOP 200
+#define VL53L0_MAX_STRING_LENGTH 32
+
+
+#include "vl53l0_device.h"
+#include "vl53l0_types.h"
+
+
+/****************************************
+ * PRIVATE define do not edit
+ ****************************************/
+
+/** @brief Defines the parameters of the Get Version Functions
+ */
+typedef struct {
+	uint32_t	 revision; /*!< revision number */
+	uint8_t		 major;	   /*!< major number */
+	uint8_t		 minor;	   /*!< minor number */
+	uint8_t		 build;	   /*!< build number */
+} VL53L0_Version_t;
+
+
+/** @brief Defines the parameters of the Get Device Info Functions
+ */
+typedef struct {
+	char Name[VL53L0_MAX_STRING_LENGTH];
+		/*!< Name of the Device e.g. Left_Distance */
+	char Type[VL53L0_MAX_STRING_LENGTH];
+		/*!< Type of the Device e.g VL53L0 */
+	char ProductId[VL53L0_MAX_STRING_LENGTH];
+		/*!< Product Identifier String	*/
+	uint8_t ProductType;
+		/*!< Product Type, VL53L0 = 1, VL53L1 = 2 */
+	uint8_t ProductRevisionMajor;
+		/*!< Product revision major */
+	uint8_t ProductRevisionMinor;
+		/*!< Product revision minor */
+} VL53L0_DeviceInfo_t;
+
+
+/** @defgroup VL53L0_define_Error_group Error and Warning code returned by API
+ *	The following DEFINE are used to identify the PAL ERROR
+ *	@{
+ */
+
+typedef int8_t VL53L0_Error;
+
+#define VL53L0_ERROR_NONE			   ((VL53L0_Error)	0)
+#define VL53L0_ERROR_CALIBRATION_WARNING	   ((VL53L0_Error) - 1)
+	/*!< Warning invalid calibration data may be in used
+	 *	\a	VL53L0_InitData()
+	 *	\a VL53L0_GetOffsetCalibrationData
+	 *	\a VL53L0_SetOffsetCalibrationData
+	 */
+#define VL53L0_ERROR_MIN_CLIPPED		   ((VL53L0_Error) - 2)
+	/*!< Warning parameter passed was clipped to min before to be applied */
+
+#define VL53L0_ERROR_UNDEFINED			   ((VL53L0_Error) - 3)
+	/*!< Unqualified error */
+#define VL53L0_ERROR_INVALID_PARAMS		   ((VL53L0_Error) - 4)
+	/*!< Parameter passed is invalid or out of range */
+#define VL53L0_ERROR_NOT_SUPPORTED		   ((VL53L0_Error) - 5)
+	/*!< Function is not supported in current mode or configuration */
+#define VL53L0_ERROR_RANGE_ERROR		   ((VL53L0_Error) - 6)
+	/*!< Device report a ranging error interrupt status */
+#define VL53L0_ERROR_TIME_OUT			   ((VL53L0_Error) - 7)
+	/*!< Aborted due to time out */
+#define VL53L0_ERROR_MODE_NOT_SUPPORTED		   ((VL53L0_Error) - 8)
+	/*!< Asked mode is not supported by the device */
+#define VL53L0_ERROR_BUFFER_TOO_SMALL		   ((VL53L0_Error) - 9)
+	/*!< ... */
+#define VL53L0_ERROR_GPIO_NOT_EXISTING		   ((VL53L0_Error) - 10)
+	/*!< User tried to setup a non-existing GPIO pin */
+#define VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED  ((VL53L0_Error) - 11)
+	/*!< unsupported GPIO functionality */
+#define VL53L0_ERROR_INTERRUPT_NOT_CLEARED		((VL53L0_Error) - 12)
+	/*!< Error during interrupt clear */
+#define VL53L0_ERROR_CONTROL_INTERFACE		   ((VL53L0_Error) - 20)
+	/*!< error reported from IO functions */
+#define VL53L0_ERROR_INVALID_COMMAND		   ((VL53L0_Error) - 30)
+	/*!< The command is not allowed in the current device state
+	 *	(power down)
+	 */
+#define VL53L0_ERROR_DIVISION_BY_ZERO		   ((VL53L0_Error) - 40)
+	/*!< In the function a division by zero occurs */
+#define VL53L0_ERROR_REF_SPAD_INIT		   ((VL53L0_Error) - 50)
+	/*!< Error during reference SPAD initialization */
+#define VL53L0_ERROR_NOT_IMPLEMENTED		   ((VL53L0_Error) - 99)
+	/*!< Tells requested functionality has not been implemented yet or
+	 * not compatible with the device
+	 */
+/** @} VL53L0_define_Error_group */
+
+
+/** @defgroup VL53L0_define_DeviceModes_group Defines Device modes
+ *	Defines all possible modes for the device
+ *	@{
+ */
+typedef uint8_t VL53L0_DeviceModes;
+
+#define VL53L0_DEVICEMODE_SINGLE_RANGING	   ((VL53L0_DeviceModes)  0)
+#define VL53L0_DEVICEMODE_CONTINUOUS_RANGING	   ((VL53L0_DeviceModes)  1)
+#define VL53L0_DEVICEMODE_SINGLE_HISTOGRAM	   ((VL53L0_DeviceModes)  2)
+#define VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING ((VL53L0_DeviceModes)  3)
+#define VL53L0_DEVICEMODE_SINGLE_ALS		   ((VL53L0_DeviceModes) 10)
+#define VL53L0_DEVICEMODE_GPIO_DRIVE		   ((VL53L0_DeviceModes) 20)
+#define VL53L0_DEVICEMODE_GPIO_OSC		   ((VL53L0_DeviceModes) 21)
+	/* ... Modes to be added depending on device */
+/** @} VL53L0_define_DeviceModes_group */
+
+
+
+/** @defgroup VL53L0_define_HistogramModes_group Defines Histogram modes
+ *	Defines all possible Histogram modes for the device
+ *	@{
+ */
+typedef uint8_t VL53L0_HistogramModes;
+
+#define VL53L0_HISTOGRAMMODE_DISABLED		 ((VL53L0_HistogramModes) 0)
+	/*!< Histogram Disabled */
+#define VL53L0_HISTOGRAMMODE_REFERENCE_ONLY	 ((VL53L0_HistogramModes) 1)
+	/*!< Histogram Reference array only */
+#define VL53L0_HISTOGRAMMODE_RETURN_ONLY	 ((VL53L0_HistogramModes) 2)
+	/*!< Histogram Return array only */
+#define VL53L0_HISTOGRAMMODE_BOTH		 ((VL53L0_HistogramModes) 3)
+	/*!< Histogram both Reference and Return Arrays */
+	/* ... Modes to be added depending on device */
+/** @} VL53L0_define_HistogramModes_group */
+
+
+/** @defgroup VL53L0_define_PowerModes_group List of available Power Modes
+ *	List of available Power Modes
+ *	@{
+ */
+
+typedef uint8_t VL53L0_PowerModes;
+
+#define VL53L0_POWERMODE_STANDBY_LEVEL1 ((VL53L0_PowerModes) 0)
+	/*!< Standby level 1 */
+#define VL53L0_POWERMODE_STANDBY_LEVEL2 ((VL53L0_PowerModes) 1)
+	/*!< Standby level 2 */
+#define VL53L0_POWERMODE_IDLE_LEVEL1	((VL53L0_PowerModes) 2)
+	/*!< Idle level 1 */
+#define VL53L0_POWERMODE_IDLE_LEVEL2	((VL53L0_PowerModes) 3)
+	/*!< Idle level 2 */
+
+/** @} VL53L0_define_PowerModes_group */
+
+
+/** @brief Defines all parameters for the device
+ */
+typedef struct {
+	VL53L0_DeviceModes DeviceMode;
+	/*!< Defines type of measurement to be done for the next measure */
+	VL53L0_HistogramModes HistogramMode;
+	/*!< Defines type of histogram measurement to be done for the next
+	 *	measure
+	 */
+	uint32_t MeasurementTimingBudgetMicroSeconds;
+	/*!< Defines the allowed total time for a single measurement */
+	uint32_t InterMeasurementPeriodMilliSeconds;
+	/*!< Defines time between two consecutive measurements (between two
+	 *	measurement starts). If set to 0 means back-to-back mode
+	 */
+	uint8_t XTalkCompensationEnable;
+	/*!< Tells if Crosstalk compensation shall be enable or not	 */
+	uint16_t XTalkCompensationRangeMilliMeter;
+	/*!< CrossTalk compensation range in millimeter	 */
+	FixPoint1616_t XTalkCompensationRateMegaCps;
+	/*!< CrossTalk compensation rate in Mega counts per seconds.
+	 *	Expressed in 16.16 fixed point format.
+	 */
+	int32_t RangeOffsetMicroMeters;
+	/*!< Range offset adjustment (mm).	*/
+
+	uint8_t LimitChecksEnable[VL53L0_CHECKENABLE_NUMBER_OF_CHECKS];
+	/*!< This Array store all the Limit Check enable for this device. */
+	uint8_t LimitChecksStatus[VL53L0_CHECKENABLE_NUMBER_OF_CHECKS];
+	/*!< This Array store all the Status of the check linked to last
+	* measurement.
+	 */
+	FixPoint1616_t LimitChecksValue[VL53L0_CHECKENABLE_NUMBER_OF_CHECKS];
+	/*!< This Array store all the Limit Check value for this device */
+
+	uint8_t WrapAroundCheckEnable;
+	/*!< Tells if Wrap Around Check shall be enable or not */
+} VL53L0_DeviceParameters_t;
+
+
+/** @defgroup VL53L0_define_State_group Defines the current status of the device
+ *	Defines the current status of the device
+ *	@{
+ */
+
+typedef uint8_t VL53L0_State;
+
+#define VL53L0_STATE_POWERDOWN		 ((VL53L0_State)  0)
+	/*!< Device is in HW reset	*/
+#define VL53L0_STATE_WAIT_STATICINIT ((VL53L0_State)  1)
+	/*!< Device is initialized and wait for static initialization  */
+#define VL53L0_STATE_STANDBY		 ((VL53L0_State)  2)
+	/*!< Device is in Low power Standby mode   */
+#define VL53L0_STATE_IDLE			 ((VL53L0_State)  3)
+	/*!< Device has been initialized and ready to do measurements  */
+#define VL53L0_STATE_RUNNING		 ((VL53L0_State)  4)
+	/*!< Device is performing measurement */
+#define VL53L0_STATE_UNKNOWN		 ((VL53L0_State)  98)
+	/*!< Device is in unknown state and need to be rebooted	 */
+#define VL53L0_STATE_ERROR			 ((VL53L0_State)  99)
+	/*!< Device is in error state and need to be rebooted  */
+
+/** @} VL53L0_define_State_group */
+
+
+/** @brief Structure containing the Dmax computation parameters and data
+ */
+typedef struct {
+	int32_t AmbTuningWindowFactor_K;
+		/*!<  internal algo tuning (*1000) */
+	int32_t RetSignalAt0mm;
+		/*!< intermediate dmax computation value caching */
+} VL53L0_DMaxData_t;
+
+/**
+ * @struct VL53L0_RangeData_t
+ * @brief Range measurement data.
+ */
+typedef struct {
+	uint32_t TimeStamp;			  /*!< 32-bit time stamp. */
+	uint32_t MeasurementTimeUsec;
+		/*!< Give the Measurement time needed by the device to do the
+		 * measurement.
+		 */
+
+
+	uint16_t RangeMilliMeter;	  /*!< range distance in millimeter. */
+
+	uint16_t RangeDMaxMilliMeter;
+		/*!< Tells what is the maximum detection distance of the device
+		 * in current setup and environment conditions (Filled when
+		 *	applicable)
+		 */
+
+	FixPoint1616_t SignalRateRtnMegaCps;
+		/*!< Return signal rate (MCPS)\n these is a 16.16 fix point
+		 *	value, which is effectively a measure of target
+		 *	 reflectance.
+		 */
+	FixPoint1616_t AmbientRateRtnMegaCps;
+		/*!< Return ambient rate (MCPS)\n these is a 16.16 fix point
+		 *	value, which is effectively a measure of the ambien
+		 *	t light.
+		 */
+
+	uint16_t EffectiveSpadRtnCount;
+		/*!< Return the effective SPAD count for the return signal.
+		 *	To obtain Real value it should be divided by 256
+		 */
+
+	uint8_t ZoneId;
+		/*!< Denotes which zone and range scheduler stage the range
+		 *	data relates to.
+		 */
+	uint8_t RangeFractionalPart;
+		/*!< Fractional part of range distance. Final value is a
+		 *	FixPoint168 value.
+		 */
+	uint8_t RangeStatus;
+		/*!< Range Status for the current measurement. This is device
+		 *	dependent. Value = 0 means value is valid.
+		 *	See \ref RangeStatusPage
+		 */
+} VL53L0_RangingMeasurementData_t;
+
+
+#define VL53L0_HISTOGRAM_BUFFER_SIZE 24
+
+/**
+ * @struct VL53L0_HistogramData_t
+ * @brief Histogram measurement data.
+ */
+typedef struct {
+	/* Histogram Measurement data */
+	uint32_t HistogramData[VL53L0_HISTOGRAM_BUFFER_SIZE];
+	/*!< Histogram data */
+	/*!< Indicate the types of histogram data :
+	 *Return only, Reference only, both Return and Reference
+	 */
+	uint8_t HistogramType;
+	uint8_t FirstBin; /*!< First Bin value */
+	uint8_t BufferSize; /*!< Buffer Size - Set by the user.*/
+	uint8_t NumberOfBins;
+	/*!< Number of bins filled by the histogram measurement */
+
+	VL53L0_DeviceError ErrorStatus;
+	/*!< Error status of the current measurement. \n
+	 * see @a ::VL53L0_DeviceError @a VL53L0_GetStatusErrorString()
+	 */
+} VL53L0_HistogramMeasurementData_t;
+
+#define VL53L0_REF_SPAD_BUFFER_SIZE 6
+
+/**
+ * @struct VL53L0_SpadData_t
+ * @brief Spad Configuration Data.
+ */
+typedef struct {
+	uint8_t RefSpadEnables[VL53L0_REF_SPAD_BUFFER_SIZE];
+	/*!< Reference Spad Enables */
+	uint8_t RefGoodSpadMap[VL53L0_REF_SPAD_BUFFER_SIZE];
+	/*!< Reference Spad Good Spad Map */
+} VL53L0_SpadData_t;
+
+typedef struct {
+	FixPoint1616_t OscFrequencyMHz; /* Frequency used */
+
+	uint16_t LastEncodedTimeout;
+	/* last encoded Time out used for timing budget*/
+
+	VL53L0_GpioFunctionality Pin0GpioFunctionality;
+	/* store the functionality of the GPIO: pin0 */
+
+	uint32_t FinalRangeTimeoutMicroSecs;
+	 /*!< Execution time of the final range*/
+	uint8_t FinalRangeVcselPulsePeriod;
+	 /*!< Vcsel pulse period (pll clocks) for the final range measurement*/
+	uint32_t PreRangeTimeoutMicroSecs;
+	 /*!< Execution time of the final range*/
+	uint8_t PreRangeVcselPulsePeriod;
+	 /*!< Vcsel pulse period (pll clocks) for the pre-range measurement*/
+
+	uint16_t SigmaEstRefArray;
+	 /*!< Reference array sigma value in 1/100th of [mm] e.g. 100 = 1mm */
+	uint16_t SigmaEstEffPulseWidth;
+	 /*!< Effective Pulse width for sigma estimate in 1/100th
+	  * of ns e.g. 900 = 9.0ns
+	  */
+	uint16_t SigmaEstEffAmbWidth;
+	 /*!< Effective Ambient width for sigma estimate in 1/100th of ns
+	  * e.g. 500 = 5.0ns
+	  */
+
+
+	/* Indicate if read from device has been done (==1) or not (==0) */
+	uint8_t ReadDataFromDeviceDone;
+	uint8_t ModuleId; /* Module ID */
+	uint8_t Revision; /* test Revision */
+	char ProductId[VL53L0_MAX_STRING_LENGTH];
+		/* Product Identifier String  */
+	uint8_t ReferenceSpadCount; /* used for ref spad management */
+	uint8_t ReferenceSpadType;	/* used for ref spad management */
+	uint8_t RefSpadsInitialised; /* reports if ref spads are initialised. */
+	uint32_t PartUIDUpper; /*!< Unique Part ID Upper */
+	uint32_t PartUIDLower; /*!< Unique Part ID Lower */
+	/*!< Peek Signal rate at 400 mm*/
+	FixPoint1616_t SignalRateMeasFixed400mm;
+
+} VL53L0_DeviceSpecificParameters_t;
+
+/**
+ * @struct VL53L0_DevData_t
+ *
+ * @brief VL53L0 PAL device ST private data structure \n
+ * End user should never access any of these field directly
+ *
+ * These must never access directly but only via macro
+ */
+typedef struct {
+	VL53L0_DMaxData_t DMaxData;
+	/*!< Dmax Data */
+	int32_t	 Part2PartOffsetNVMMicroMeter;
+	/*!< backed up NVM value */
+	int32_t	 Part2PartOffsetAdjustmentNVMMicroMeter;
+	/*!< backed up NVM value representing additional offset adjustment */
+	VL53L0_DeviceParameters_t CurrentParameters;
+	/*!< Current Device Parameter */
+	VL53L0_RangingMeasurementData_t LastRangeMeasure;
+	/*!< Ranging Data */
+	VL53L0_HistogramMeasurementData_t LastHistogramMeasure;
+	/*!< Histogram Data */
+	VL53L0_DeviceSpecificParameters_t DeviceSpecificParameters;
+	/*!< Parameters specific to the device */
+	VL53L0_SpadData_t SpadData;
+	/*!< Spad Data */
+	uint8_t SequenceConfig;
+	/*!< Internal value for the sequence config */
+	uint8_t RangeFractionalEnable;
+	/*!< Enable/Disable fractional part of ranging data */
+	VL53L0_State PalState;
+	/*!< Current state of the PAL for this device */
+	VL53L0_PowerModes PowerMode;
+	/*!< Current Power Mode	 */
+	uint16_t SigmaEstRefArray;
+	/*!< Reference array sigma value in 1/100th of [mm] e.g. 100 = 1mm */
+	uint16_t SigmaEstEffPulseWidth;
+	/*!< Effective Pulse width for sigma estimate in 1/100th
+	 * of ns e.g. 900 = 9.0ns
+	 */
+	uint16_t SigmaEstEffAmbWidth;
+	/*!< Effective Ambient width for sigma estimate in 1/100th of ns
+	 * e.g. 500 = 5.0ns
+	 */
+	uint8_t StopVariable;
+	/*!< StopVariable used during the stop sequence */
+	uint16_t targetRefRate;
+	/*!< Target Ambient Rate for Ref spad management */
+	FixPoint1616_t SigmaEstimate;
+	/*!< Sigma Estimate - based on ambient & VCSEL rates and
+	 * signal_total_events
+	 */
+	FixPoint1616_t SignalEstimate;
+	/*!< Signal Estimate - based on ambient & VCSEL rates and cross talk */
+	FixPoint1616_t LastSignalRefMcps;
+	/*!< Latest Signal ref in Mcps */
+	uint8_t *pTuningSettingsPointer;
+	/*!< Pointer for Tuning Settings table */
+	uint8_t UseInternalTuningSettings;
+	/*!< Indicate if we use	 Tuning Settings table */
+	uint16_t LinearityCorrectiveGain;
+	/*!< Linearity Corrective Gain value in x1000 */
+	uint16_t DmaxCalRangeMilliMeter;
+	/*!< Dmax Calibration Range millimeter */
+	FixPoint1616_t DmaxCalSignalRateRtnMegaCps;
+	/*!< Dmax Calibration Signal Rate Return MegaCps */
+
+} VL53L0_DevData_t;
+
+
+/** @defgroup VL53L0_define_InterruptPolarity_group Defines the Polarity
+ * of the Interrupt
+ *	Defines the Polarity of the Interrupt
+ *	@{
+ */
+typedef uint8_t VL53L0_InterruptPolarity;
+
+#define VL53L0_INTERRUPTPOLARITY_LOW	   ((VL53L0_InterruptPolarity)	0)
+/*!< Set active low polarity best setup for falling edge. */
+#define VL53L0_INTERRUPTPOLARITY_HIGH	   ((VL53L0_InterruptPolarity)	1)
+/*!< Set active high polarity best setup for rising edge. */
+
+/** @} VL53L0_define_InterruptPolarity_group */
+
+
+/** @defgroup VL53L0_define_VcselPeriod_group Vcsel Period Defines
+ *	Defines the range measurement for which to access the vcsel period.
+ *	@{
+ */
+typedef uint8_t VL53L0_VcselPeriod;
+
+#define VL53L0_VCSEL_PERIOD_PRE_RANGE	((VL53L0_VcselPeriod) 0)
+/*!<Identifies the pre-range vcsel period. */
+#define VL53L0_VCSEL_PERIOD_FINAL_RANGE ((VL53L0_VcselPeriod) 1)
+/*!<Identifies the final range vcsel period. */
+
+/** @} VL53L0_define_VcselPeriod_group */
+
+/** @defgroup VL53L0_define_SchedulerSequence_group Defines the steps
+ * carried out by the scheduler during a range measurement.
+ *	@{
+ *	Defines the states of all the steps in the scheduler
+ *	i.e. enabled/disabled.
+ */
+typedef struct {
+	uint8_t		 TccOn;	   /*!<Reports if Target Centre Check On  */
+	uint8_t		 MsrcOn;	   /*!<Reports if MSRC On  */
+	uint8_t		 DssOn;		   /*!<Reports if DSS On  */
+	uint8_t		 PreRangeOn;   /*!<Reports if Pre-Range On	*/
+	uint8_t		 FinalRangeOn; /*!<Reports if Final-Range On  */
+} VL53L0_SchedulerSequenceSteps_t;
+
+/** @} VL53L0_define_SchedulerSequence_group */
+
+/** @defgroup VL53L0_define_SequenceStepId_group Defines the Polarity
+ *	of the Interrupt
+ *	Defines the the sequence steps performed during ranging..
+ *	@{
+ */
+typedef uint8_t VL53L0_SequenceStepId;
+
+#define	 VL53L0_SEQUENCESTEP_TCC		 ((VL53L0_VcselPeriod) 0)
+/*!<Target CentreCheck identifier. */
+#define	 VL53L0_SEQUENCESTEP_DSS		 ((VL53L0_VcselPeriod) 1)
+/*!<Dynamic Spad Selection function Identifier. */
+#define	 VL53L0_SEQUENCESTEP_MSRC		 ((VL53L0_VcselPeriod) 2)
+/*!<Minimum Signal Rate Check function Identifier. */
+#define	 VL53L0_SEQUENCESTEP_PRE_RANGE	 ((VL53L0_VcselPeriod) 3)
+/*!<Pre-Range check Identifier. */
+#define	 VL53L0_SEQUENCESTEP_FINAL_RANGE ((VL53L0_VcselPeriod) 4)
+/*!<Final Range Check Identifier. */
+
+#define	 VL53L0_SEQUENCESTEP_NUMBER_OF_CHECKS			 5
+/*!<Number of Sequence Step Managed by the API. */
+
+/** @} VL53L0_define_SequenceStepId_group */
+
+
+/* MACRO Definitions */
+/** @defgroup VL53L0_define_GeneralMacro_group General Macro Defines
+ *	General Macro Defines
+ *	@{
+ */
+
+/* Defines */
+#define VL53L0_SETPARAMETERFIELD(Dev, field, value) \
+	PALDevDataSet(Dev, CurrentParameters.field, value)
+
+#define VL53L0_GETPARAMETERFIELD(Dev, field, variable) \
+	(variable = ((PALDevDataGet(Dev, CurrentParameters)).field))
+
+
+#define VL53L0_SETARRAYPARAMETERFIELD(Dev, field, index, value) \
+	PALDevDataSet(Dev, CurrentParameters.field[index], value)
+
+#define VL53L0_GETARRAYPARAMETERFIELD(Dev, field, index, variable) \
+	(variable = (PALDevDataGet(Dev, CurrentParameters)).field[index])
+
+
+#define VL53L0_SETDEVICESPECIFICPARAMETER(Dev, field, value) \
+		PALDevDataSet(Dev, DeviceSpecificParameters.field, value)
+
+#define VL53L0_GETDEVICESPECIFICPARAMETER(Dev, field) \
+		PALDevDataGet(Dev, DeviceSpecificParameters).field
+
+
+#define VL53L0_FIXPOINT1616TOFIXPOINT97(Value) \
+	(uint16_t)((Value>>9)&0xFFFF)
+#define VL53L0_FIXPOINT97TOFIXPOINT1616(Value) \
+	(FixPoint1616_t)(Value<<9)
+
+#define VL53L0_FIXPOINT1616TOFIXPOINT88(Value) \
+	(uint16_t)((Value>>8)&0xFFFF)
+#define VL53L0_FIXPOINT88TOFIXPOINT1616(Value) \
+	(FixPoint1616_t)(Value<<8)
+
+#define VL53L0_FIXPOINT1616TOFIXPOINT412(Value) \
+	(uint16_t)((Value>>4)&0xFFFF)
+#define VL53L0_FIXPOINT412TOFIXPOINT1616(Value) \
+	(FixPoint1616_t)(Value<<4)
+
+#define VL53L0_FIXPOINT1616TOFIXPOINT313(Value) \
+	(uint16_t)((Value>>3)&0xFFFF)
+#define VL53L0_FIXPOINT313TOFIXPOINT1616(Value) \
+	(FixPoint1616_t)(Value<<3)
+
+#define VL53L0_FIXPOINT1616TOFIXPOINT08(Value) \
+	(uint8_t)((Value>>8)&0x00FF)
+#define VL53L0_FIXPOINT08TOFIXPOINT1616(Value) \
+	(FixPoint1616_t)(Value<<8)
+
+#define VL53L0_FIXPOINT1616TOFIXPOINT53(Value) \
+	(uint8_t)((Value>>13)&0x00FF)
+#define VL53L0_FIXPOINT53TOFIXPOINT1616(Value) \
+	(FixPoint1616_t)(Value<<13)
+
+#define VL53L0_FIXPOINT1616TOFIXPOINT102(Value) \
+	(uint16_t)((Value>>14)&0x0FFF)
+#define VL53L0_FIXPOINT102TOFIXPOINT1616(Value) \
+	(FixPoint1616_t)(Value<<12)
+
+#define VL53L0_MAKEUINT16(lsb, msb) (uint16_t)((((uint16_t)msb)<<8) + \
+		(uint16_t)lsb)
+
+/** @} VL53L0_define_GeneralMacro_group */
+
+/** @} VL53L0_globaldefine_group */
+
+
+
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _VL53L0_DEF_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_device.h b/drivers/input/misc/vl53L0/inc/vl53l0_device.h
new file mode 100644
index 000000000000..b69b9cf72279
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_device.h
@@ -0,0 +1,261 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+/**
+ * Device specific defines. To be adapted by implementer for the targeted
+ * device.
+ */
+
+#ifndef _VL53L0_DEVICE_H_
+#define _VL53L0_DEVICE_H_
+
+#include "vl53l0_types.h"
+
+
+/** @defgroup VL53L0_DevSpecDefines_group VL53L0 cut1.1 Device Specific Defines
+ *  @brief VL53L0 cut1.1 Device Specific Defines
+ *  @{
+ */
+
+
+/** @defgroup VL53L0_DeviceError_group Device Error
+ *  @brief Device Error code
+ *
+ *  This enum is Device specific it should be updated in the implementation
+ *  Use @a VL53L0_GetStatusErrorString() to get the string.
+ *  It is related to Status Register of the Device.
+ *  @{
+ */
+typedef uint8_t VL53L0_DeviceError;
+
+#define VL53L0_DEVICEERROR_NONE                        ((VL53L0_DeviceError) 0)
+	/*!< 0  NoError  */
+#define VL53L0_DEVICEERROR_VCSELCONTINUITYTESTFAILURE  ((VL53L0_DeviceError) 1)
+#define VL53L0_DEVICEERROR_VCSELWATCHDOGTESTFAILURE    ((VL53L0_DeviceError) 2)
+#define VL53L0_DEVICEERROR_NOVHVVALUEFOUND             ((VL53L0_DeviceError) 3)
+#define VL53L0_DEVICEERROR_MSRCNOTARGET                ((VL53L0_DeviceError) 4)
+#define VL53L0_DEVICEERROR_SNRCHECK                    ((VL53L0_DeviceError) 5)
+#define VL53L0_DEVICEERROR_RANGEPHASECHECK             ((VL53L0_DeviceError) 6)
+#define VL53L0_DEVICEERROR_SIGMATHRESHOLDCHECK         ((VL53L0_DeviceError) 7)
+#define VL53L0_DEVICEERROR_TCC                         ((VL53L0_DeviceError) 8)
+#define VL53L0_DEVICEERROR_PHASECONSISTENCY            ((VL53L0_DeviceError) 9)
+#define VL53L0_DEVICEERROR_MINCLIP                     ((VL53L0_DeviceError) 10)
+#define VL53L0_DEVICEERROR_RANGECOMPLETE               ((VL53L0_DeviceError) 11)
+#define VL53L0_DEVICEERROR_ALGOUNDERFLOW               ((VL53L0_DeviceError) 12)
+#define VL53L0_DEVICEERROR_ALGOOVERFLOW                ((VL53L0_DeviceError) 13)
+#define VL53L0_DEVICEERROR_RANGEIGNORETHRESHOLD        ((VL53L0_DeviceError) 14)
+
+/** @} end of VL53L0_DeviceError_group */
+
+
+/** @defgroup VL53L0_CheckEnable_group Check Enable list
+ *  @brief Check Enable code
+ *
+ *  Define used to specify the LimitCheckId.
+ *  Use @a VL53L0_GetLimitCheckInfo() to get the string.
+ *  @{
+ */
+
+#define VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE           0
+#define VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE     1
+#define VL53L0_CHECKENABLE_SIGNAL_REF_CLIP             2
+#define VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD      3
+#define VL53L0_CHECKENABLE_SIGNAL_RATE_MSRC            4
+#define VL53L0_CHECKENABLE_SIGNAL_RATE_PRE_RANGE       5
+
+#define VL53L0_CHECKENABLE_NUMBER_OF_CHECKS            6
+
+/** @}  end of VL53L0_CheckEnable_group */
+
+
+/** @defgroup VL53L0_GpioFunctionality_group Gpio Functionality
+ *  @brief Defines the different functionalities for the device GPIO(s)
+ *  @{
+ */
+typedef uint8_t VL53L0_GpioFunctionality;
+
+#define VL53L0_GPIOFUNCTIONALITY_OFF                     \
+	((VL53L0_GpioFunctionality)  0) /*!< NO Interrupt  */
+#define VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW   \
+	((VL53L0_GpioFunctionality)  1) /*!< Level Low (value < thresh_low)  */
+#define VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH   \
+	((VL53L0_GpioFunctionality)  2) /*!< Level High (value > thresh_high) */
+#define VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT    \
+	((VL53L0_GpioFunctionality)  3)
+	/*!< Out Of Window (value < thresh_low OR value > thresh_high)  */
+#define VL53L0_GPIOFUNCTIONALITY_NEW_MEASURE_READY        \
+	((VL53L0_GpioFunctionality)  4) /*!< New Sample Ready  */
+
+/** @} end of VL53L0_GpioFunctionality_group */
+
+
+/* Device register map */
+
+/** @defgroup VL53L0_DefineRegisters_group Define Registers
+ *  @brief List of all the defined registers
+ *  @{
+ */
+#define VL53L0_REG_SYSRANGE_START                        0x000
+	/** mask existing bit in #VL53L0_REG_SYSRANGE_START*/
+	#define VL53L0_REG_SYSRANGE_MODE_MASK          0x0F
+	/** bit 0 in #VL53L0_REG_SYSRANGE_START write 1 toggle state in
+	 * continuous mode and arm next shot in single shot mode
+	 */
+	#define VL53L0_REG_SYSRANGE_MODE_START_STOP    0x01
+	/** bit 1 write 0 in #VL53L0_REG_SYSRANGE_START set single shot mode */
+	#define VL53L0_REG_SYSRANGE_MODE_SINGLESHOT    0x00
+	/** bit 1 write 1 in #VL53L0_REG_SYSRANGE_START set back-to-back
+	 *  operation mode
+	 */
+	#define VL53L0_REG_SYSRANGE_MODE_BACKTOBACK    0x02
+	/** bit 2 write 1 in #VL53L0_REG_SYSRANGE_START set timed operation
+	 *  mode
+	 */
+	#define VL53L0_REG_SYSRANGE_MODE_TIMED         0x04
+	/** bit 3 write 1 in #VL53L0_REG_SYSRANGE_START set histogram operation
+	 *  mode
+	 */
+	#define VL53L0_REG_SYSRANGE_MODE_HISTOGRAM     0x08
+
+
+#define VL53L0_REG_SYSTEM_THRESH_HIGH               0x000C
+#define VL53L0_REG_SYSTEM_THRESH_LOW                0x000E
+
+
+#define VL53L0_REG_SYSTEM_SEQUENCE_CONFIG		0x0001
+#define VL53L0_REG_SYSTEM_RANGE_CONFIG			0x0009
+#define VL53L0_REG_SYSTEM_INTERMEASUREMENT_PERIOD	0x0004
+
+
+#define VL53L0_REG_SYSTEM_INTERRUPT_CONFIG_GPIO               0x000A
+	#define VL53L0_REG_SYSTEM_INTERRUPT_GPIO_DISABLED	0x00
+	#define VL53L0_REG_SYSTEM_INTERRUPT_GPIO_LEVEL_LOW	0x01
+	#define VL53L0_REG_SYSTEM_INTERRUPT_GPIO_LEVEL_HIGH	0x02
+	#define VL53L0_REG_SYSTEM_INTERRUPT_GPIO_OUT_OF_WINDOW	0x03
+	#define VL53L0_REG_SYSTEM_INTERRUPT_GPIO_NEW_SAMPLE_READY	0x04
+
+#define VL53L0_REG_GPIO_HV_MUX_ACTIVE_HIGH          0x0084
+
+
+#define VL53L0_REG_SYSTEM_INTERRUPT_CLEAR           0x000B
+
+/* Result registers */
+#define VL53L0_REG_RESULT_INTERRUPT_STATUS          0x0013
+#define VL53L0_REG_RESULT_RANGE_STATUS              0x0014
+
+#define VL53L0_REG_RESULT_CORE_PAGE  1
+#define VL53L0_REG_RESULT_CORE_AMBIENT_WINDOW_EVENTS_RTN   0x00BC
+#define VL53L0_REG_RESULT_CORE_RANGING_TOTAL_EVENTS_RTN    0x00C0
+#define VL53L0_REG_RESULT_CORE_AMBIENT_WINDOW_EVENTS_REF   0x00D0
+#define VL53L0_REG_RESULT_CORE_RANGING_TOTAL_EVENTS_REF    0x00D4
+#define VL53L0_REG_RESULT_PEAK_SIGNAL_RATE_REF             0x00B6
+
+/* Algo register */
+
+#define VL53L0_REG_ALGO_PART_TO_PART_RANGE_OFFSET_MM       0x0028
+
+#define VL53L0_REG_I2C_SLAVE_DEVICE_ADDRESS                0x008a
+
+/* Check Limit registers */
+#define VL53L0_REG_MSRC_CONFIG_CONTROL                     0x0060
+
+#define VL53L0_REG_PRE_RANGE_CONFIG_MIN_SNR                      0X0027
+#define VL53L0_REG_PRE_RANGE_CONFIG_VALID_PHASE_LOW              0x0056
+#define VL53L0_REG_PRE_RANGE_CONFIG_VALID_PHASE_HIGH             0x0057
+#define VL53L0_REG_PRE_RANGE_MIN_COUNT_RATE_RTN_LIMIT            0x0064
+
+#define VL53L0_REG_FINAL_RANGE_CONFIG_MIN_SNR                    0X0067
+#define VL53L0_REG_FINAL_RANGE_CONFIG_VALID_PHASE_LOW            0x0047
+#define VL53L0_REG_FINAL_RANGE_CONFIG_VALID_PHASE_HIGH           0x0048
+#define VL53L0_REG_FINAL_RANGE_CONFIG_MIN_COUNT_RATE_RTN_LIMIT   0x0044
+
+
+#define VL53L0_REG_PRE_RANGE_CONFIG_SIGMA_THRESH_HI              0X0061
+#define VL53L0_REG_PRE_RANGE_CONFIG_SIGMA_THRESH_LO              0X0062
+
+/* PRE RANGE registers */
+#define VL53L0_REG_PRE_RANGE_CONFIG_VCSEL_PERIOD                 0x0050
+#define VL53L0_REG_PRE_RANGE_CONFIG_TIMEOUT_MACROP_HI            0x0051
+#define VL53L0_REG_PRE_RANGE_CONFIG_TIMEOUT_MACROP_LO            0x0052
+
+#define VL53L0_REG_SYSTEM_HISTOGRAM_BIN                          0x0081
+#define VL53L0_REG_HISTOGRAM_CONFIG_INITIAL_PHASE_SELECT         0x0033
+#define VL53L0_REG_HISTOGRAM_CONFIG_READOUT_CTRL                 0x0055
+
+#define VL53L0_REG_FINAL_RANGE_CONFIG_VCSEL_PERIOD               0x0070
+#define VL53L0_REG_FINAL_RANGE_CONFIG_TIMEOUT_MACROP_HI          0x0071
+#define VL53L0_REG_FINAL_RANGE_CONFIG_TIMEOUT_MACROP_LO          0x0072
+#define VL53L0_REG_CROSSTALK_COMPENSATION_PEAK_RATE_MCPS         0x0020
+
+#define VL53L0_REG_MSRC_CONFIG_TIMEOUT_MACROP                    0x0046
+
+
+#define VL53L0_REG_SOFT_RESET_GO2_SOFT_RESET_N	                 0x00bf
+#define VL53L0_REG_IDENTIFICATION_MODEL_ID                       0x00c0
+#define VL53L0_REG_IDENTIFICATION_REVISION_ID                    0x00c2
+
+#define VL53L0_REG_OSC_CALIBRATE_VAL                             0x00f8
+
+
+#define VL53L0_SIGMA_ESTIMATE_MAX_VALUE                          65535
+/* equivalent to a range sigma of 655.35mm */
+
+#define VL53L0_REG_GLOBAL_CONFIG_VCSEL_WIDTH          0x032
+#define VL53L0_REG_GLOBAL_CONFIG_SPAD_ENABLES_REF_0   0x0B0
+#define VL53L0_REG_GLOBAL_CONFIG_SPAD_ENABLES_REF_1   0x0B1
+#define VL53L0_REG_GLOBAL_CONFIG_SPAD_ENABLES_REF_2   0x0B2
+#define VL53L0_REG_GLOBAL_CONFIG_SPAD_ENABLES_REF_3   0x0B3
+#define VL53L0_REG_GLOBAL_CONFIG_SPAD_ENABLES_REF_4   0x0B4
+#define VL53L0_REG_GLOBAL_CONFIG_SPAD_ENABLES_REF_5   0x0B5
+
+#define VL53L0_REG_GLOBAL_CONFIG_REF_EN_START_SELECT   0xB6
+#define VL53L0_REG_DYNAMIC_SPAD_NUM_REQUESTED_REF_SPAD 0x4E /* 0x14E */
+#define VL53L0_REG_DYNAMIC_SPAD_REF_EN_START_OFFSET    0x4F /* 0x14F */
+#define VL53L0_REG_POWER_MANAGEMENT_GO1_POWER_FORCE    0x80
+
+/*
+ * Speed of light in um per 1E-10 Seconds
+ */
+
+#define VL53L0_SPEED_OF_LIGHT_IN_AIR 2997
+
+#define VL53L0_REG_VHV_CONFIG_PAD_SCL_SDA__EXTSUP_HV     0x0089
+
+#define VL53L0_REG_ALGO_PHASECAL_LIM                         0x0030 /* 0x130 */
+#define VL53L0_REG_ALGO_PHASECAL_CONFIG_TIMEOUT              0x0030
+
+/** @} VL53L0_DefineRegisters_group */
+
+/** @} VL53L0_DevSpecDefines_group */
+
+
+#endif
+
+/* _VL53L0_DEVICE_H_ */
+
+
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_i2c_platform.h b/drivers/input/misc/vl53L0/inc/vl53l0_i2c_platform.h
new file mode 100644
index 000000000000..9b1bdd7f3c54
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_i2c_platform.h
@@ -0,0 +1,402 @@
+/*
+ *  vl53l0_i2c_platform.h - Linux kernel modules for STM VL53L0 FlightSense TOF
+ *							sensor
+ *
+ *  Copyright (C) 2016 STMicroelectronics Imaging Division.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+
+/**
+ * @file   VL53L0_i2c_platform.h
+ * @brief  Function prototype definitions for EWOK Platform layer.
+ *
+ */
+
+
+#ifndef _VL53L0_I2C_PLATFORM_H_
+#define _VL53L0_I2C_PLATFORM_H_
+
+#include "vl53l0_def.h"
+
+
+/** Maximum buffer size to be used in i2c */
+#define VL53L0_MAX_I2C_XFER_SIZE   64
+
+/**
+ *  @brief Typedef defining .\n
+ * The developer should modify this to suit the platform being deployed.
+ *
+ */
+
+/**
+ * @brief Typedef defining 8 bit unsigned char type.\n
+ * The developer should modify this to suit the platform being deployed.
+ *
+ */
+
+#ifndef bool_t
+typedef unsigned char bool_t;
+#endif
+
+
+#define	   I2C                0x01
+#define	   SPI                0x00
+
+#define    COMMS_BUFFER_SIZE    64
+/*MUST be the same size as the SV task buffer */
+
+#define    BYTES_PER_WORD        2
+#define    BYTES_PER_DWORD       4
+
+#define    VL53L0_MAX_STRING_LENGTH_PLT       256
+
+/**
+ * @brief  Initialise platform comms.
+ *
+ * @param  comms_type      - selects between I2C and SPI
+ * @param  comms_speed_khz - unsigned short containing the I2C speed in kHz
+ *
+ * @return status - status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_comms_initialise(uint8_t  comms_type,
+			uint16_t comms_speed_khz);
+
+/**
+ * @brief  Close platform comms.
+ *
+ * @return status - status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_comms_close(void);
+
+/**
+ * @brief  Cycle Power to Device
+ *
+ * @return status - status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_cycle_power(void);
+
+int32_t VL53L0_set_page(VL53L0_DEV dev, uint8_t page_data);
+
+/**
+ * @brief Writes the supplied byte buffer to the device
+ *
+ * Wrapper for SystemVerilog Write Multi task
+ *
+ * @code
+ *
+ * Example:
+ *
+ * uint8_t *spad_enables;
+ *
+ * int status = VL53L0_write_multi(RET_SPAD_EN_0, spad_enables, 36);
+ *
+ * @endcode
+ *
+ * @param  address - uint8_t device address value
+ * @param  index - uint8_t register index value
+ * @param  pdata - pointer to uint8_t buffer containing the data to be written
+ * @param  count - number of bytes in the supplied byte buffer
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_write_multi(VL53L0_DEV dev, uint8_t index, uint8_t  *pdata,
+		int32_t count);
+
+
+/**
+ * @brief  Reads the requested number of bytes from the device
+ *
+ * Wrapper for SystemVerilog Read Multi task
+ *
+ * @code
+ *
+ * Example:
+ *
+ * uint8_t buffer[COMMS_BUFFER_SIZE];
+ *
+ * int status = status  = VL53L0_read_multi(DEVICE_ID, buffer, 2)
+ *
+ * @endcode
+ *
+ * @param  address - uint8_t device address value
+ * @param  index - uint8_t register index value
+ * @param  pdata - pointer to the uint8_t buffer to store read data
+ * @param  count - number of uint8_t's to read
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_read_multi(VL53L0_DEV dev,  uint8_t index, uint8_t  *pdata,
+		int32_t count);
+
+
+/**
+ * @brief  Writes a single byte to the device
+ *
+ * Wrapper for SystemVerilog Write Byte task
+ *
+ * @code
+ *
+ * Example:
+ *
+ * uint8_t page_number = MAIN_SELECT_PAGE;
+ *
+ * int status = VL53L0_write_byte(PAGE_SELECT, page_number);
+ *
+ * @endcode
+ *
+ * @param  address - uint8_t device address value
+ * @param  index - uint8_t register index value
+ * @param  data  - uint8_t data value to write
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_write_byte(VL53L0_DEV dev,  uint8_t index, uint8_t   data);
+
+
+/**
+ * @brief  Writes a single word (16-bit unsigned) to the device
+ *
+ * Manages the big-endian nature of the device (first byte written is the
+ * MS byte).
+ * Uses SystemVerilog Write Multi task.
+ *
+ * @code
+ *
+ * Example:
+ *
+ * uint16_t nvm_ctrl_pulse_width = 0x0004;
+ *
+ * int status = VL53L0_write_word(NVM_CTRL__PULSE_WIDTH_MSB,
+ * nvm_ctrl_pulse_width);
+ *
+ * @endcode
+ *
+ * @param  address - uint8_t device address value
+ * @param  index - uint8_t register index value
+ * @param  data  - uin16_t data value write
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_write_word(VL53L0_DEV dev,  uint8_t index, uint16_t  data);
+
+
+/**
+ * @brief  Writes a single dword (32-bit unsigned) to the device
+ *
+ * Manages the big-endian nature of the device (first byte written is the
+ * MS byte).
+ * Uses SystemVerilog Write Multi task.
+ *
+ * @code
+ *
+ * Example:
+ *
+ * uint32_t nvm_data = 0x0004;
+ *
+ * int status = VL53L0_write_dword(NVM_CTRL__DATAIN_MMM, nvm_data);
+ *
+ * @endcode
+ *
+ * @param  address - uint8_t device address value
+ * @param  index - uint8_t register index value
+ * @param  data  - uint32_t data value to write
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_write_dword(VL53L0_DEV dev, uint8_t index, uint32_t  data);
+
+
+
+/**
+ * @brief  Reads a single byte from the device
+ *
+ * Uses SystemVerilog Read Byte task.
+ *
+ * @code
+ *
+ * Example:
+ *
+ * uint8_t device_status = 0;
+ *
+ * int status = VL53L0_read_byte(STATUS, &device_status);
+ *
+ * @endcode
+ *
+ * @param  address - uint8_t device address value
+ * @param  index  - uint8_t register index value
+ * @param  pdata  - pointer to uint8_t data value
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_read_byte(VL53L0_DEV dev,  uint8_t index, uint8_t  *pdata);
+
+
+/**
+ * @brief  Reads a single word (16-bit unsigned) from the device
+ *
+ * Manages the big-endian nature of the device (first byte read is the MS byte).
+ * Uses SystemVerilog Read Multi task.
+ *
+ * @code
+ *
+ * Example:
+ *
+ * uint16_t timeout = 0;
+ *
+ * int status = VL53L0_read_word(TIMEOUT_OVERALL_PERIODS_MSB, &timeout);
+ *
+ * @endcode
+ *
+ * @param  address - uint8_t device address value
+ * @param  index  - uint8_t register index value
+ * @param  pdata  - pointer to uint16_t data value
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_read_word(VL53L0_DEV dev,  uint8_t index, uint16_t *pdata);
+
+
+/**
+ * @brief  Reads a single dword (32-bit unsigned) from the device
+ *
+ * Manages the big-endian nature of the device (first byte read is the MS byte).
+ * Uses SystemVerilog Read Multi task.
+ *
+ * @code
+ *
+ * Example:
+ *
+ * uint32_t range_1 = 0;
+ *
+ * int status = VL53L0_read_dword(RANGE_1_MMM, &range_1);
+ *
+ * @endcode
+ *
+ * @param  address - uint8_t device address value
+ * @param  index - uint8_t register index value
+ * @param  pdata - pointer to uint32_t data value
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_read_dword(VL53L0_DEV dev, uint8_t index, uint32_t *pdata);
+
+
+/**
+ * @brief  Implements a programmable wait in us
+ *
+ * Wrapper for SystemVerilog Wait in micro seconds task
+ *
+ * @param  wait_us - integer wait in micro seconds
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_platform_wait_us(int32_t wait_us);
+
+
+/**
+ * @brief  Implements a programmable wait in ms
+ *
+ * Wrapper for SystemVerilog Wait in milli seconds task
+ *
+ * @param  wait_ms - integer wait in milli seconds
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_wait_ms(int32_t wait_ms);
+
+
+/**
+ * @brief Set GPIO value
+ *
+ * @param  level  - input  level - either 0 or 1
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_set_gpio(uint8_t  level);
+
+
+/**
+ * @brief Get GPIO value
+ *
+ * @param  plevel - uint8_t pointer to store GPIO level (0 or 1)
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_get_gpio(uint8_t *plevel);
+
+/**
+ * @brief Release force on GPIO
+ *
+ * @return status - SystemVerilog status 0 = ok, 1 = error
+ *
+ */
+
+int32_t VL53L0_release_gpio(void);
+
+
+/**
+* @brief Get the frequency of the timer used for ranging results time stamps
+*
+* @param[out] ptimer_freq_hz : pointer for timer frequency
+*
+* @return status : 0 = ok, 1 = error
+*
+*/
+
+int32_t VL53L0_get_timer_frequency(int32_t *ptimer_freq_hz);
+
+/**
+* @brief Get the timer value in units of timer_freq_hz
+* (see VL53L0_get_timestamp_frequency())
+*
+* @param[out] ptimer_count : pointer for timer count value
+*
+* @return status : 0 = ok, 1 = error
+*
+*/
+
+int32_t VL53L0_get_timer_value(int32_t *ptimer_count);
+int VL53L0_I2CWrite(VL53L0_DEV dev, uint8_t *buff, uint8_t len);
+int VL53L0_I2CRead(VL53L0_DEV dev, uint8_t *buff, uint8_t len);
+
+#endif /* _VL53L0_I2C_PLATFORM_H_ */
+
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_interrupt_threshold_settings.h b/drivers/input/misc/vl53L0/inc/vl53l0_interrupt_threshold_settings.h
new file mode 100644
index 000000000000..35acd8eb42e3
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_interrupt_threshold_settings.h
@@ -0,0 +1,194 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+	* Redistributions of source code must retain the above copyright
+	  notice, this list of conditions and the following disclaimer.
+	* Redistributions in binary form must reproduce the above copyright
+	  notice, this list of conditions and the following disclaimer in the
+	  documentation and/or other materials provided with the distribution.
+	* Neither the name of STMicroelectronics nor the
+	  names of its contributors may be used to endorse or promote products
+	  derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+
+#ifndef _VL53L0_INTERRUPT_THRESHOLD_SETTINGS_H_
+#define _VL53L0_INTERRUPT_THRESHOLD_SETTINGS_H_
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+uint8_t InterruptThresholdSettings[] = {
+
+	/* Start of Interrupt Threshold Settings */
+	0x1, 0xff, 0x00,
+	0x1, 0x80, 0x01,
+	0x1, 0xff, 0x01,
+	0x1, 0x00, 0x00,
+	0x1, 0xff, 0x01,
+	0x1, 0x4f, 0x02,
+	0x1, 0xFF, 0x0E,
+	0x1, 0x00, 0x03,
+	0x1, 0x01, 0x84,
+	0x1, 0x02, 0x0A,
+	0x1, 0x03, 0x03,
+	0x1, 0x04, 0x08,
+	0x1, 0x05, 0xC8,
+	0x1, 0x06, 0x03,
+	0x1, 0x07, 0x8D,
+	0x1, 0x08, 0x08,
+	0x1, 0x09, 0xC6,
+	0x1, 0x0A, 0x01,
+	0x1, 0x0B, 0x02,
+	0x1, 0x0C, 0x00,
+	0x1, 0x0D, 0xD5,
+	0x1, 0x0E, 0x18,
+	0x1, 0x0F, 0x12,
+	0x1, 0x10, 0x01,
+	0x1, 0x11, 0x82,
+	0x1, 0x12, 0x00,
+	0x1, 0x13, 0xD5,
+	0x1, 0x14, 0x18,
+	0x1, 0x15, 0x13,
+	0x1, 0x16, 0x03,
+	0x1, 0x17, 0x86,
+	0x1, 0x18, 0x0A,
+	0x1, 0x19, 0x09,
+	0x1, 0x1A, 0x08,
+	0x1, 0x1B, 0xC2,
+	0x1, 0x1C, 0x03,
+	0x1, 0x1D, 0x8F,
+	0x1, 0x1E, 0x0A,
+	0x1, 0x1F, 0x06,
+	0x1, 0x20, 0x01,
+	0x1, 0x21, 0x02,
+	0x1, 0x22, 0x00,
+	0x1, 0x23, 0xD5,
+	0x1, 0x24, 0x18,
+	0x1, 0x25, 0x22,
+	0x1, 0x26, 0x01,
+	0x1, 0x27, 0x82,
+	0x1, 0x28, 0x00,
+	0x1, 0x29, 0xD5,
+	0x1, 0x2A, 0x18,
+	0x1, 0x2B, 0x0B,
+	0x1, 0x2C, 0x28,
+	0x1, 0x2D, 0x78,
+	0x1, 0x2E, 0x28,
+	0x1, 0x2F, 0x91,
+	0x1, 0x30, 0x00,
+	0x1, 0x31, 0x0B,
+	0x1, 0x32, 0x00,
+	0x1, 0x33, 0x0B,
+	0x1, 0x34, 0x00,
+	0x1, 0x35, 0xA1,
+	0x1, 0x36, 0x00,
+	0x1, 0x37, 0xA0,
+	0x1, 0x38, 0x00,
+	0x1, 0x39, 0x04,
+	0x1, 0x3A, 0x28,
+	0x1, 0x3B, 0x30,
+	0x1, 0x3C, 0x0C,
+	0x1, 0x3D, 0x04,
+	0x1, 0x3E, 0x0F,
+	0x1, 0x3F, 0x79,
+	0x1, 0x40, 0x28,
+	0x1, 0x41, 0x1E,
+	0x1, 0x42, 0x2F,
+	0x1, 0x43, 0x87,
+	0x1, 0x44, 0x00,
+	0x1, 0x45, 0x0B,
+	0x1, 0x46, 0x00,
+	0x1, 0x47, 0x0B,
+	0x1, 0x48, 0x00,
+	0x1, 0x49, 0xA7,
+	0x1, 0x4A, 0x00,
+	0x1, 0x4B, 0xA6,
+	0x1, 0x4C, 0x00,
+	0x1, 0x4D, 0x04,
+	0x1, 0x4E, 0x01,
+	0x1, 0x4F, 0x00,
+	0x1, 0x50, 0x00,
+	0x1, 0x51, 0x80,
+	0x1, 0x52, 0x09,
+	0x1, 0x53, 0x08,
+	0x1, 0x54, 0x01,
+	0x1, 0x55, 0x00,
+	0x1, 0x56, 0x0F,
+	0x1, 0x57, 0x79,
+	0x1, 0x58, 0x09,
+	0x1, 0x59, 0x05,
+	0x1, 0x5A, 0x00,
+	0x1, 0x5B, 0x60,
+	0x1, 0x5C, 0x05,
+	0x1, 0x5D, 0xD1,
+	0x1, 0x5E, 0x0C,
+	0x1, 0x5F, 0x3C,
+	0x1, 0x60, 0x00,
+	0x1, 0x61, 0xD0,
+	0x1, 0x62, 0x0B,
+	0x1, 0x63, 0x03,
+	0x1, 0x64, 0x28,
+	0x1, 0x65, 0x10,
+	0x1, 0x66, 0x2A,
+	0x1, 0x67, 0x39,
+	0x1, 0x68, 0x0B,
+	0x1, 0x69, 0x02,
+	0x1, 0x6A, 0x28,
+	0x1, 0x6B, 0x10,
+	0x1, 0x6C, 0x2A,
+	0x1, 0x6D, 0x61,
+	0x1, 0x6E, 0x0C,
+	0x1, 0x6F, 0x00,
+	0x1, 0x70, 0x0F,
+	0x1, 0x71, 0x79,
+	0x1, 0x72, 0x00,
+	0x1, 0x73, 0x0B,
+	0x1, 0x74, 0x00,
+	0x1, 0x75, 0x0B,
+	0x1, 0x76, 0x00,
+	0x1, 0x77, 0xA1,
+	0x1, 0x78, 0x00,
+	0x1, 0x79, 0xA0,
+	0x1, 0x7A, 0x00,
+	0x1, 0x7B, 0x04,
+	0x1, 0xFF, 0x04,
+	0x1, 0x79, 0x1D,
+	0x1, 0x7B, 0x27,
+	0x1, 0x96, 0x0E,
+	0x1, 0x97, 0xFE,
+	0x1, 0x98, 0x03,
+	0x1, 0x99, 0xEF,
+	0x1, 0x9A, 0x02,
+	0x1, 0x9B, 0x44,
+	0x1, 0x73, 0x07,
+	0x1, 0x70, 0x01,
+	0x1, 0xff, 0x01,
+	0x1, 0x00, 0x01,
+	0x1, 0xff, 0x00,
+	0x00, 0x00, 0x00
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VL53L0_INTERRUPT_THRESHOLD_SETTINGS_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_platform.h b/drivers/input/misc/vl53L0/inc/vl53l0_platform.h
new file mode 100644
index 000000000000..f723a552a7f1
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_platform.h
@@ -0,0 +1,231 @@
+/*******************************************************************************
+ * Copyright © 2015, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+
+#ifndef _VL53L0_PLATFORM_H_
+#define _VL53L0_PLATFORM_H_
+
+#include <linux/delay.h>
+#include "vl53l0_def.h"
+#include "vl53l0_platform_log.h"
+
+#include "stmvl53l0-i2c.h"
+#include "stmvl53l0-cci.h"
+#include "stmvl53l0.h"
+
+/**
+ * @file vl53l0_platform.h
+ *
+ * @brief All end user OS/platform/application porting
+ */
+
+/**
+ * @defgroup VL53L0_platform_group VL53L0 Platform Functions
+ * @brief    VL53L0 Platform Functions
+ *  @{
+ */
+
+/**
+ * @struct  VL53L0_Dev_t
+ * @brief    Generic PAL device type that does link between API and platform
+ *           abstraction layer
+ *
+ */
+typedef struct stmvl53l0_data *VL53L0_DEV;
+
+/**
+ * @def PALDevDataGet
+ * @brief Get ST private structure @a VL53L0_DevData_t data access
+ *
+ * @param Dev       Device Handle
+ * @param field     ST structure field name
+ * It maybe used and as real data "ref" not just as "get" for sub-structure item
+ * like PALDevDataGet(FilterData.field)[i] or
+ * PALDevDataGet(FilterData.MeasurementIndex)++
+ */
+#define PALDevDataGet(Dev, field) (Dev->Data.field)
+
+/**
+ * @def PALDevDataSet(Dev, field, data)
+ * @brief  Set ST private structure @a VL53L0_DevData_t data field
+ * @param Dev       Device Handle
+ * @param field     ST structure field na*me
+ * @param data      Data to be set
+ */
+#define PALDevDataSet(Dev, field, data) ((Dev->Data.field) = (data))
+
+
+/**
+ * @defgroup VL53L0_registerAccess_group PAL Register Access Functions
+ * @brief    PAL Register Access Functions
+ *  @{
+ */
+
+/**
+ * Lock comms interface to serialize all commands to a shared I2C interface
+ *  for a specific device
+ * @param   Dev       Device Handle
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_LockSequenceAccess(VL53L0_DEV Dev);
+
+/**
+ * Unlock comms interface to serialize all commands to a shared I2C interface
+ * for a specific device
+ * @param   Dev       Device Handle
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_UnlockSequenceAccess(VL53L0_DEV Dev);
+
+
+/**
+ * Writes the supplied byte buffer to the device
+ * @param   Dev       Device Handle
+ * @param   index     The register index
+ * @param   pdata    Pointer to uint8_t buffer containing the data to be written
+ * @param   count     Number of bytes in the supplied byte buffer
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_WriteMulti(VL53L0_DEV Dev, uint8_t index,
+		uint8_t *pdata, uint32_t count);
+
+/**
+ * Reads the requested number of bytes from the device
+ * @param   Dev       Device Handle
+ * @param   index     The register index
+ * @param   pdata     Pointer to the uint8_t buffer to store read data
+ * @param   count     Number of uint8_t's to read
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_ReadMulti(VL53L0_DEV Dev, uint8_t index,
+		uint8_t *pdata, uint32_t count);
+
+/**
+ * Write single byte register
+ * @param   Dev       Device Handle
+ * @param   index     The register index
+ * @param   data      8 bit register data
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_WrByte(VL53L0_DEV Dev, uint8_t index, uint8_t data);
+
+/**
+ * Write word register
+ * @param   Dev       Device Handle
+ * @param   index     The register index
+ * @param   data      16 bit register data
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_WrWord(VL53L0_DEV Dev, uint8_t index, uint16_t data);
+
+/**
+ * Write double word (4 byte) register
+ * @param   Dev       Device Handle
+ * @param   index     The register index
+ * @param   data      32 bit register data
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_WrDWord(VL53L0_DEV Dev, uint8_t index, uint32_t data);
+
+/**
+ * Read single byte register
+ * @param   Dev       Device Handle
+ * @param   index     The register index
+ * @param   data      pointer to 8 bit data
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_RdByte(VL53L0_DEV Dev, uint8_t index, uint8_t *data);
+
+/**
+ * Read word (2byte) register
+ * @param   Dev       Device Handle
+ * @param   index     The register index
+ * @param   data      pointer to 16 bit data
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_RdWord(VL53L0_DEV Dev, uint8_t index, uint16_t *data);
+
+/**
+ * Read dword (4byte) register
+ * @param   Dev       Device Handle
+ * @param   index     The register index
+ * @param   data      pointer to 32 bit data
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_RdDWord(VL53L0_DEV Dev, uint8_t index, uint32_t *data);
+
+/**
+ * Threat safe Update (read/modify/write) single byte register
+ *
+ * Final_reg = (Initial_reg & and_data) |or_data
+ *
+ * @param   Dev        Device Handle
+ * @param   index      The register index
+ * @param   AndData    8 bit and data
+ * @param   OrData     8 bit or data
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_UpdateByte(VL53L0_DEV Dev, uint8_t index,
+		uint8_t AndData, uint8_t OrData);
+
+/** @} end of VL53L0_registerAccess_group */
+
+
+/**
+ * @brief execute delay in all polling API call
+ *
+ * A typical multi-thread or RTOs implementation is to sleep the task for
+ * some 5ms (with 100Hz max rate faster polling is not needed)
+ * if nothing specific is need you can define it as an empty/void macro
+ * @code
+ * #define VL53L0_PollingDelay(...) (void)0
+ * @endcode
+ * @param Dev       Device Handle
+ * @return  VL53L0_ERROR_NONE        Success
+ * @return  "Other error code"    See ::VL53L0_Error
+ */
+VL53L0_Error VL53L0_PollingDelay(VL53L0_DEV Dev);
+/* usually best implemented as a real function */
+
+/** @} end of VL53L0_platform_group */
+
+#endif  /* _VL53L0_PLATFORM_H_ */
+
+
+
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_platform_log.h b/drivers/input/misc/vl53L0/inc/vl53l0_platform_log.h
new file mode 100644
index 000000000000..8c38615239ad
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_platform_log.h
@@ -0,0 +1,128 @@
+/*******************************************************************************
+ * Copyright © 2015, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+
+#ifndef _VL53L0_PLATFORM_LOG_H_
+#define _VL53L0_PLATFORM_LOG_H_
+
+#include <linux/string.h>
+/* LOG Functions */
+
+
+/**
+ * @file vl53l0_platform_log.h
+ *
+ * @brief platform log function definition
+ */
+
+/* #define VL53L0_LOG_ENABLE */
+
+enum {
+	TRACE_LEVEL_NONE,
+	TRACE_LEVEL_ERRORS,
+	TRACE_LEVEL_WARNING,
+	TRACE_LEVEL_INFO,
+	TRACE_LEVEL_DEBUG,
+	TRACE_LEVEL_ALL,
+	TRACE_LEVEL_IGNORE
+};
+
+enum {
+	TRACE_FUNCTION_NONE = 0,
+	TRACE_FUNCTION_I2C  = 1,
+	TRACE_FUNCTION_ALL  = 0x7fffffff /* all bits except sign */
+};
+
+enum {
+	TRACE_MODULE_NONE              = 0x0,
+	TRACE_MODULE_API               = 0x1,
+	TRACE_MODULE_PLATFORM          = 0x2,
+	TRACE_MODULE_ALL               = 0x7fffffff /* all bits except sign */
+};
+
+
+#ifdef VL53L0_LOG_ENABLE
+
+#include <linux/module.h>
+
+
+extern uint32_t _trace_level;
+
+
+
+int32_t VL53L0_trace_config(char *filename, uint32_t modules,
+			uint32_t level, uint32_t functions);
+
+#if 0
+void trace_print_module_function(uint32_t module, uint32_t level,
+			uint32_t function, const char *format, ...);
+#else
+#define trace_print_module_function(...)
+#endif
+
+#define LOG_GET_TIME() (int)0
+/*
+ * #define _LOG_FUNCTION_START(module, fmt, ...) \
+		printk(KERN_INFO"beg %s start @%d\t" fmt "\n", \
+		__func__, LOG_GET_TIME(), ##__VA_ARGS__)
+
+ * #define _LOG_FUNCTION_END(module, status, ...)\
+		printk(KERN_INFO"end %s @%d %d\n", \
+		 __func__, LOG_GET_TIME(), (int)status)
+
+ * #define _LOG_FUNCTION_END_FMT(module, status, fmt, ...)\
+		printk(KERN_INFO"End %s @%d %d\t"fmt"\n" , \
+		__func__, LOG_GET_TIME(), (int)status, ##__VA_ARGS__)
+*/
+#define _LOG_FUNCTION_START(module, fmt, ...) \
+		pr_err("beg %s start @%d\t" fmt "\n", \
+		__func__, LOG_GET_TIME(), ##__VA_ARGS__)
+
+#define _LOG_FUNCTION_END(module, status, ...)\
+		pr_err("end %s start @%d Status %d\n", \
+		 __func__, LOG_GET_TIME(), (int)status)
+
+#define _LOG_FUNCTION_END_FMT(module, status, fmt, ...)\
+		pr_err("End %s @%d %d\t"fmt"\n", \
+		__func__, LOG_GET_TIME(), (int)status, ##__VA_ARGS__)
+
+
+#else /* VL53L0_LOG_ENABLE no logging */
+	#define VL53L0_ErrLog(...) (void)0
+	#define _LOG_FUNCTION_START(module, fmt, ...) (void)0
+	#define _LOG_FUNCTION_END(module, status, ...) (void)0
+	#define _LOG_FUNCTION_END_FMT(module, status, fmt, ...) (void)0
+#endif /* else */
+
+#define VL53L0_COPYSTRING(str, ...) strlcpy(str, ##__VA_ARGS__, sizeof(str))
+
+
+#endif  /* _VL53L0_PLATFORM_LOG_H_ */
+
+
+
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_tuning.h b/drivers/input/misc/vl53L0/inc/vl53l0_tuning.h
new file mode 100644
index 000000000000..a9f7ca70b5ac
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_tuning.h
@@ -0,0 +1,146 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+	* Redistributions of source code must retain the above copyright
+	  notice, this list of conditions and the following disclaimer.
+	* Redistributions in binary form must reproduce the above copyright
+	  notice, this list of conditions and the following disclaimer in the
+	  documentation and/or other materials provided with the distribution.
+	* Neither the name of STMicroelectronics nor the
+	  names of its contributors may be used to endorse or promote products
+	  derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+
+#ifndef _VL53L0_TUNING_H_
+#define _VL53L0_TUNING_H_
+
+#include "vl53l0_def.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+uint8_t DefaultTuningSettings[] = {
+
+	/* update 02/11/2015_v36 */
+	0x01, 0xFF, 0x01,
+	0x01, 0x00, 0x00,
+
+	0x01, 0xFF, 0x00,
+	0x01, 0x09, 0x00,
+	0x01, 0x10, 0x00,
+	0x01, 0x11, 0x00,
+
+	0x01, 0x24, 0x01,
+	0x01, 0x25, 0xff,
+	0x01, 0x75, 0x00,
+
+	0x01, 0xFF, 0x01,
+	0x01, 0x4e, 0x2c,
+	0x01, 0x48, 0x00,
+	0x01, 0x30, 0x20,
+
+	0x01, 0xFF, 0x00,
+	0x01, 0x30, 0x09, /* mja changed from 0x64. */
+	0x01, 0x54, 0x00,
+	0x01, 0x31, 0x04,
+	0x01, 0x32, 0x03,
+	0x01, 0x40, 0x83,
+	0x01, 0x46, 0x25,
+	0x01, 0x60, 0x00,
+	0x01, 0x27, 0x00,
+	0x01, 0x50, 0x06,
+	0x01, 0x51, 0x00,
+	0x01, 0x52, 0x96,
+	0x01, 0x56, 0x08,
+	0x01, 0x57, 0x30,
+	0x01, 0x61, 0x00,
+	0x01, 0x62, 0x00,
+	0x01, 0x64, 0x00,
+	0x01, 0x65, 0x00,
+	0x01, 0x66, 0xa0,
+
+	0x01, 0xFF, 0x01,
+	0x01, 0x22, 0x32,
+	0x01, 0x47, 0x14,
+	0x01, 0x49, 0xff,
+	0x01, 0x4a, 0x00,
+
+	0x01, 0xFF, 0x00,
+	0x01, 0x7a, 0x0a,
+	0x01, 0x7b, 0x00,
+	0x01, 0x78, 0x21,
+
+	0x01, 0xFF, 0x01,
+	0x01, 0x23, 0x34,
+	0x01, 0x42, 0x00,
+	0x01, 0x44, 0xff,
+	0x01, 0x45, 0x26,
+	0x01, 0x46, 0x05,
+	0x01, 0x40, 0x40,
+	0x01, 0x0E, 0x06,
+	0x01, 0x20, 0x1a,
+	0x01, 0x43, 0x40,
+
+	0x01, 0xFF, 0x00,
+	0x01, 0x34, 0x03,
+	0x01, 0x35, 0x44,
+
+	0x01, 0xFF, 0x01,
+	0x01, 0x31, 0x04,
+	0x01, 0x4b, 0x09,
+	0x01, 0x4c, 0x05,
+	0x01, 0x4d, 0x04,
+
+
+	0x01, 0xFF, 0x00,
+	0x01, 0x44, 0x00,
+	0x01, 0x45, 0x20,
+	0x01, 0x47, 0x08,
+	0x01, 0x48, 0x28,
+	0x01, 0x67, 0x00,
+	0x01, 0x70, 0x04,
+	0x01, 0x71, 0x01,
+	0x01, 0x72, 0xfe,
+	0x01, 0x76, 0x00,
+	0x01, 0x77, 0x00,
+
+	0x01, 0xFF, 0x01,
+	0x01, 0x0d, 0x01,
+
+	0x01, 0xFF, 0x00,
+	0x01, 0x80, 0x01,
+	0x01, 0x01, 0xF8,
+
+	0x01, 0xFF, 0x01,
+	0x01, 0x8e, 0x01,
+	0x01, 0x00, 0x01,
+	0x01, 0xFF, 0x00,
+	0x01, 0x80, 0x00,
+
+	0x00, 0x00, 0x00
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _VL53L0_TUNING_H_ */
diff --git a/drivers/input/misc/vl53L0/inc/vl53l0_types.h b/drivers/input/misc/vl53L0/inc/vl53l0_types.h
new file mode 100644
index 000000000000..c509913146ed
--- /dev/null
+++ b/drivers/input/misc/vl53L0/inc/vl53l0_types.h
@@ -0,0 +1,69 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#ifndef VL53L0_TYPES_H_
+#define VL53L0_TYPES_H_
+
+#include <linux/types.h>
+
+#ifndef NULL
+#error "TODO review  NULL definition or add required include "
+#define NULL 0
+#endif
+/** use where fractional values are expected
+ *
+ * Given a floating point value f it's .16 bit point is (int)(f*(1<<16))
+ */
+typedef unsigned int FixPoint1616_t;
+
+#if !defined(STDINT_H) &&  !defined(_GCC_STDINT_H) \
+	&& !defined(_STDINT_H) && !defined(_LINUX_TYPES_H)
+
+#pragma message("Please review type definition of STDINT define for your" \
+"platform and add to list above ")
+
+/*
+*  target platform do not provide stdint or use a different #define than above
+*  to avoid seeing the message below addapt the #define list above or implement
+*  all type and delete these pragma
+*/
+
+typedef unsigned int uint32_t;
+typedef int int32_t;
+
+typedef unsigned short uint16_t;
+typedef short int16_t;
+
+typedef unsigned char uint8_t;
+
+typedef signed char int8_t;
+
+
+#endif /* VL53L0_TYPES_H_ */
+
+#endif /* VL6180x_TYPES_H_ */
diff --git a/drivers/input/misc/vl53L0/src/vl53l010_api.c b/drivers/input/misc/vl53L0/src/vl53l010_api.c
new file mode 100644
index 000000000000..6c706bd0fe3b
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l010_api.c
@@ -0,0 +1,4175 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of STMicroelectronics nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+ NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+ IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ ******************************************************************************/
+
+#include "vl53l010_api.h"
+#include "vl53l010_device.h"
+#include "vl53l010_tuning.h"
+
+/* use macro for abs */
+#ifndef __KERNEL__
+#include <stdlib.h>
+#endif
+
+
+
+#define LOG_FUNCTION_START(fmt, ...) \
+	_LOG_FUNCTION_START(TRACE_MODULE_API, fmt, ##__VA_ARGS__)
+#define LOG_FUNCTION_END(status, ...) \
+	_LOG_FUNCTION_END(TRACE_MODULE_API, status, ##__VA_ARGS__)
+#define LOG_FUNCTION_END_FMT(status, fmt, ...) \
+	_LOG_FUNCTION_END_FMT(TRACE_MODULE_API, status, fmt, ##__VA_ARGS__)
+
+#ifdef VL53L0_LOG_ENABLE
+#define trace_print(level, ...) trace_print_module_function(TRACE_MODULE_API, \
+	level, TRACE_FUNCTION_NONE, ##__VA_ARGS__)
+#endif
+
+/* Defines */
+#define VL53L010_SETPARAMETERFIELD(Dev, field, value) \
+	do { \
+		if (Status == VL53L0_ERROR_NONE) {\
+			CurrentParameters = \
+				PALDevDataGet(Dev, CurrentParameters); \
+			CurrentParameters.field = value; \
+			CurrentParameters =	\
+				PALDevDataSet(Dev, CurrentParameters, \
+					CurrentParameters); \
+		} \
+	} while (0)
+#define VL53L010_SETARRAYPARAMETERFIELD(Dev, field, index, value) \
+	do { \
+		if (Status == VL53L0_ERROR_NONE) {\
+			CurrentParameters = \
+				PALDevDataGet(Dev, CurrentParameters); \
+			CurrentParameters.field[index] = value; \
+			CurrentParameters = \
+				PALDevDataSet(Dev, CurrentParameters, \
+					CurrentParameters); \
+		} \
+	} while (0)
+
+#define VL53L010_GETPARAMETERFIELD(Dev, field, variable) \
+	do { \
+		if (Status == VL53L0_ERROR_NONE) { \
+			CurrentParameters = \
+				PALDevDataGet(Dev, CurrentParameters); \
+			variable = CurrentParameters.field; \
+		} \
+	} while (0)
+
+#define VL53L010_GETARRAYPARAMETERFIELD(Dev, field, index, variable) \
+	do { \
+		if (Status == VL53L0_ERROR_NONE) { \
+			CurrentParameters = \
+				PALDevDataGet(Dev, CurrentParameters); \
+			variable = CurrentParameters.field[index]; \
+		} \
+	} while (0)
+
+#define VL53L010_SETDEVICESPECIFICPARAMETER(Dev, field, value) \
+	do { \
+		if (Status == VL53L0_ERROR_NONE) { \
+			DeviceSpecificParameters = \
+				PALDevDataGet(Dev, DeviceSpecificParameters); \
+			DeviceSpecificParameters.field = value; \
+			DeviceSpecificParameters = \
+				PALDevDataSet(Dev, DeviceSpecificParameters, \
+				DeviceSpecificParameters); \
+		} \
+	} while (0)
+
+#define VL53L010_GETDEVICESPECIFICPARAMETER(Dev, field) \
+		PALDevDataGet(Dev, DeviceSpecificParameters).field
+
+#define VL53L010_FIXPOINT1616TOFIXPOINT97(Value) \
+			(uint16_t)((Value >> 9) & 0xFFFF)
+#define VL53L010_FIXPOINT97TOFIXPOINT1616(Value) \
+			(FixPoint1616_t)(Value << 9)
+#define VL53L010_FIXPOINT1616TOFIXPOINT412(Value) \
+			(uint16_t)((Value >> 4) & 0xFFFF)
+#define VL53L010_FIXPOINT412TOFIXPOINT1616(Value) \
+			(FixPoint1616_t)(Value << 4)
+#define VL53L010_FIXPOINT1616TOFIXPOINT08(Value) \
+			(uint8_t)((Value >> 8) & 0x00FF)
+#define VL53L010_FIXPOINT08TOFIXPOINT1616(Value) \
+			(FixPoint1616_t)(Value << 8)
+#define VL53L010_MAKEUINT16(lsb, msb) \
+			(uint16_t)((((uint16_t)msb) << 8) + (uint16_t)lsb)
+
+
+
+/* Group PAL General Functions */
+VL53L0_Error VL53L010_GetVersion(VL53L0_Version_t *pVersion)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	pVersion->major = VL53L010_IMPLEMENTATION_VER_MAJOR;
+	pVersion->minor = VL53L010_IMPLEMENTATION_VER_MINOR;
+	pVersion->build = VL53L010_IMPLEMENTATION_VER_SUB;
+
+	pVersion->revision = VL53L0_IMPLEMENTATION_VER_REVISION;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetPalSpecVersion(VL53L0_Version_t *pPalSpecVersion)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	pPalSpecVersion->major = VL53L010_SPECIFICATION_VER_MAJOR;
+	pPalSpecVersion->minor = VL53L010_SPECIFICATION_VER_MINOR;
+	pPalSpecVersion->build = VL53L010_SPECIFICATION_VER_SUB;
+
+	pPalSpecVersion->revision = VL53L010_SPECIFICATION_VER_REVISION;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetDeviceInfo(VL53L0_DEV Dev,
+				    VL53L0_DeviceInfo_t *pVL53L0_DeviceInfo)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t model_id;
+	uint8_t Revision;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L010_check_part_used(Dev, &Revision, pVL53L0_DeviceInfo);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (Revision == 0) {
+			VL53L0_COPYSTRING(pVL53L0_DeviceInfo->Name,
+					  VL53L010_STRING_DEVICE_INFO_NAME_TS0);
+		} else if ((Revision <= 34) && (Revision != 32)) {
+			VL53L0_COPYSTRING(pVL53L0_DeviceInfo->Name,
+					  VL53L010_STRING_DEVICE_INFO_NAME_TS1);
+		} else if (Revision < 39) {
+			VL53L0_COPYSTRING(pVL53L0_DeviceInfo->Name,
+					  VL53L010_STRING_DEVICE_INFO_NAME_TS2);
+		} else {
+			VL53L0_COPYSTRING(pVL53L0_DeviceInfo->Name,
+					  VL53L010_STRING_DEVICE_INFO_NAME_ES1);
+		}
+
+		VL53L0_COPYSTRING(pVL53L0_DeviceInfo->Type,
+				  VL53L010_STRING_DEVICE_INFO_TYPE);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status =
+		    VL53L0_RdByte(Dev, VL53L010_REG_IDENTIFICATION_MODEL_ID,
+				  &pVL53L0_DeviceInfo->ProductType);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status =
+		    VL53L0_RdByte(Dev, VL53L010_REG_IDENTIFICATION_REVISION_ID,
+				  &model_id);
+		pVL53L0_DeviceInfo->ProductRevisionMajor = 1;
+		pVL53L0_DeviceInfo->ProductRevisionMinor =
+		    (model_id & 0xF0) >> 4;
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetDeviceErrorStatus(VL53L0_DEV Dev,
+					   VL53L010_DeviceError *
+					   pDeviceErrorStatus)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t RangeStatus;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L010_REG_RESULT_RANGE_STATUS,
+			       &RangeStatus);
+
+	*pDeviceErrorStatus = (VL53L0_DeviceError) ((RangeStatus & 0x78) >> 3);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+#define VL53L010_BUILDSTATUSERRORSTRING(BUFFER, ERRORCODE, STRINGVALUE) do {\
+	case ERRORCODE: \
+			VL53L0_COPYSTRING(BUFFER, STRINGVALUE);\
+	break;\
+	} while (0)
+
+VL53L0_Error VL53L010_GetDeviceErrorString(VL53L0_DeviceError ErrorCode,
+					   char *pDeviceErrorString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	switch (ErrorCode) {
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+						VL53L010_DEVICEERROR_NONE,
+				VL53L010_STRING_DEVICEERROR_NONE);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+			VL53L010_DEVICEERROR_VCSELCONTINUITYTESTFAILURE,
+			VL53L010_STRING_DEVICEERROR_VCSELCONTINUITYTESTFAILURE);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+			VL53L010_DEVICEERROR_VCSELWATCHDOGTESTFAILURE,
+			VL53L010_STRING_DEVICEERROR_VCSELWATCHDOGTESTFAILURE);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_NOVHVVALUEFOUND,
+				VL53L010_STRING_DEVICEERROR_NOVHVVALUEFOUND);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_MSRCNOTARGET,
+				VL53L010_STRING_DEVICEERROR_MSRCNOTARGET);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_MSRCMINIMUMSNR,
+				VL53L010_STRING_DEVICEERROR_MSRCMINIMUMSNR);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_MSRCWRAPAROUND,
+				VL53L010_STRING_DEVICEERROR_MSRCWRAPAROUND);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+						VL53L010_DEVICEERROR_TCC,
+				VL53L010_STRING_DEVICEERROR_TCC);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_RANGEAWRAPAROUND,
+				VL53L010_STRING_DEVICEERROR_RANGEAWRAPAROUND);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_RANGEBWRAPAROUND,
+				VL53L010_STRING_DEVICEERROR_RANGEBWRAPAROUND);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+						VL53L010_DEVICEERROR_MINCLIP,
+				VL53L010_STRING_DEVICEERROR_MINCLIP);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_RANGECOMPLETE,
+				VL53L010_STRING_DEVICEERROR_RANGECOMPLETE);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_ALGOUNDERFLOW,
+				VL53L010_STRING_DEVICEERROR_ALGOUNDERFLOW);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_ALGOOVERFLOW,
+				VL53L010_STRING_DEVICEERROR_ALGOOVERFLOW);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_FINALSNRLIMIT,
+				VL53L010_STRING_DEVICEERROR_FINALSNRLIMIT);
+		VL53L010_BUILDSTATUSERRORSTRING(pDeviceErrorString,
+				VL53L010_DEVICEERROR_NOTARGETIGNORE,
+				VL53L010_STRING_DEVICEERROR_NOTARGETIGNORE);
+	default:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+				  VL53L010_STRING_UNKNOW_ERROR_CODE);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetPalErrorString(VL53L0_Error PalErrorCode,
+					char *pPalErrorString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	switch (PalErrorCode) {
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_NONE,
+						VL53L010_STRING_ERROR_NONE);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+				VL53L0_ERROR_CALIBRATION_WARNING,
+				VL53L010_STRING_ERROR_CALIBRATION_WARNING);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_MIN_CLIPPED,
+				VL53L010_STRING_ERROR_MIN_CLIPPED);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_UNDEFINED,
+				VL53L010_STRING_ERROR_UNDEFINED);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_INVALID_PARAMS,
+				VL53L010_STRING_ERROR_INVALID_PARAMS);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_NOT_SUPPORTED,
+				VL53L010_STRING_ERROR_NOT_SUPPORTED);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_RANGE_ERROR,
+				VL53L010_STRING_ERROR_RANGE_ERROR);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_TIME_OUT,
+						VL53L010_STRING_ERROR_TIME_OUT);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_MODE_NOT_SUPPORTED,
+				VL53L010_STRING_ERROR_MODE_NOT_SUPPORTED);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_NOT_IMPLEMENTED,
+				VL53L010_STRING_ERROR_NOT_IMPLEMENTED);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_BUFFER_TOO_SMALL,
+				VL53L010_STRING_ERROR_BUFFER_TOO_SMALL);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_GPIO_NOT_EXISTING,
+				VL53L010_STRING_ERROR_GPIO_NOT_EXISTING);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+			VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED,
+			VL53L010_STRING_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED);
+		VL53L010_BUILDSTATUSERRORSTRING(pPalErrorString,
+						VL53L0_ERROR_CONTROL_INTERFACE,
+				VL53L010_STRING_ERROR_CONTROL_INTERFACE);
+	default:
+		VL53L0_COPYSTRING(pPalErrorString,
+				  VL53L010_STRING_UNKNOW_ERROR_CODE);
+		break;
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetPalState(VL53L0_DEV Dev, VL53L0_State *pPalState)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pPalState = PALDevDataGet(Dev, PalState);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetPowerMode(VL53L0_DEV Dev, VL53L0_PowerModes PowerMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	/* Only level1 of Power mode exists */
+	if ((PowerMode != VL53L0_POWERMODE_STANDBY_LEVEL1) &&
+	    (PowerMode != VL53L0_POWERMODE_IDLE_LEVEL1)) {
+		Status = VL53L0_ERROR_MODE_NOT_SUPPORTED;
+	} else if (PowerMode == VL53L0_POWERMODE_STANDBY_LEVEL1) {
+		/* set the standby level1 of power mode */
+		Status = VL53L0_WrByte(Dev, 0x80, 0x00);
+		if (Status == VL53L0_ERROR_NONE) {
+			/* Set PAL State to standby */
+			PALDevDataSet(Dev, PalState, VL53L0_STATE_STANDBY);
+			PALDevDataSet(Dev, PowerMode,
+				      VL53L0_POWERMODE_STANDBY_LEVEL1);
+		}
+
+	} else {
+		/* VL53L0_POWERMODE_IDLE_LEVEL1 */
+		Status = VL53L0_WrByte(Dev, 0x80, 0x01);
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L010_StaticInit(Dev);
+		if (Status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, PowerMode,
+				      VL53L0_POWERMODE_IDLE_LEVEL1);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetPowerMode(VL53L0_DEV Dev,
+				   VL53L0_PowerModes *pPowerMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	/* Only level1 of Power mode exists */
+	Status = VL53L0_RdByte(Dev, 0x80, &Byte);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (Byte == 1)
+			PALDevDataSet(Dev, PowerMode,
+				      VL53L0_POWERMODE_IDLE_LEVEL1);
+		else
+			PALDevDataSet(Dev, PowerMode,
+				      VL53L0_POWERMODE_STANDBY_LEVEL1);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetOffsetCalibrationDataMicroMeter(VL53L0_DEV Dev,
+							 int32_t
+					 OffsetCalibrationDataMicroMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t OffsetCalibrationData;
+
+	LOG_FUNCTION_START("");
+
+	OffsetCalibrationData = (uint8_t) (OffsetCalibrationDataMicroMeter
+					   / 1000);
+	Status = VL53L0_WrByte(Dev, VL53L010_REG_ALGO_PART_TO_PART_RANGE_OFFSET,
+			       *(uint8_t *) &OffsetCalibrationData);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetOffsetCalibrationDataMicroMeter(VL53L0_DEV Dev,
+							 int32_t *
+					 pOffsetCalibrationDataMicroMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t RangeOffsetRegister;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L010_REG_ALGO_PART_TO_PART_RANGE_OFFSET,
+			       &RangeOffsetRegister);
+	if (Status == VL53L0_ERROR_NONE) {
+		*pOffsetCalibrationDataMicroMeter =
+		    (*((int8_t *) (&RangeOffsetRegister))) * 1000;
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetGroupParamHold(VL53L0_DEV Dev, uint8_t GroupParamHold)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	/* not implemented on VL53L0 */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetUpperLimitMilliMeter(VL53L0_DEV Dev,
+					      uint16_t *pUpperLimitMilliMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	/* not implemented on VL53L0 */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* End Group PAL General Functions */
+
+/* Group PAL Init Functions */
+VL53L0_Error VL53L010_SetDeviceAddress(VL53L0_DEV Dev, uint8_t DeviceAddress)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_WrByte(Dev, VL53L010_REG_I2C_SLAVE_DEVICE_ADDRESS,
+			       DeviceAddress / 2);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_DataInit(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	VL53L0_DeviceSpecificParameters_t DeviceSpecificParameters;
+	int32_t OffsetCalibrationData;
+
+	LOG_FUNCTION_START("");
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* read device info */
+		VL53L010_SETDEVICESPECIFICPARAMETER(Dev, ReadDataFromDeviceDone,
+						    0);
+
+		Status = VL53L010_get_info_from_device(Dev);
+	}
+
+	/* Set Default static parameters */
+	/* set first temporary values 11.3999MHz * 65536 = 748421 */
+	VL53L010_SETDEVICESPECIFICPARAMETER(Dev, OscFrequencyMHz, 748421);
+	/* 11.3999MHz * 65536 = 748421 */
+
+	/* Get default parameters */
+	Status = VL53L010_GetDeviceParameters(Dev, &CurrentParameters);
+	if (Status == VL53L0_ERROR_NONE) {
+		/* initialize PAL values */
+		CurrentParameters.DeviceMode = VL53L0_DEVICEMODE_SINGLE_RANGING;
+		CurrentParameters.HistogramMode = VL53L0_HISTOGRAMMODE_DISABLED;
+		PALDevDataSet(Dev, CurrentParameters, CurrentParameters);
+	}
+
+	/* Sigma estimator variable */
+	PALDevDataSet(Dev, SigmaEstRefArray, 100);
+	PALDevDataSet(Dev, SigmaEstEffPulseWidth, 900);
+	PALDevDataSet(Dev, SigmaEstEffAmbWidth, 500);
+
+	/* Set Signal and Sigma check */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetLimitCheckEnable(Dev,
+				      VL53L010_CHECKENABLE_SIGMA_FINAL_RANGE,
+						      0);
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetLimitCheckEnable(Dev,
+				VL53L010_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+				0);
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetLimitCheckValue(Dev,
+				     VL53L010_CHECKENABLE_SIGMA_FINAL_RANGE,
+						     (FixPoint1616_t) (32 <<
+								       16));
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetLimitCheckValue(Dev,
+				VL53L010_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+				(FixPoint1616_t) (25 * 65536 / 100));
+		/* 0.25 * 65538 */
+	}
+
+	/* Read back NVM offset */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_GetOffsetCalibrationDataMicroMeter(Dev,
+						     &OffsetCalibrationData);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		PALDevDataSet(Dev, Part2PartOffsetNVMMicroMeter,
+			      OffsetCalibrationData);
+
+		PALDevDataSet(Dev, SequenceConfig, 0xFF);
+
+		/* Set PAL state to tell that we are waiting for call
+		 *  to VL53L010_StaticInit
+		 */
+		PALDevDataSet(Dev, PalState, VL53L0_STATE_WAIT_STATICINIT);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_StaticInit(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceSpecificParameters_t DeviceSpecificParameters;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	uint16_t TempWord;
+	uint8_t TempByte;
+	uint8_t localBuffer[32];
+	uint8_t i;
+	uint8_t Revision;
+
+	LOG_FUNCTION_START("");
+
+	/* Set I2C standard mode */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev, 0x88, 0x00);
+
+	/* this function do nothing if it has been called before */
+	Status = VL53L010_get_info_from_device(Dev);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Revision = VL53L010_GETDEVICESPECIFICPARAMETER(Dev, Revision);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (Revision == 0)
+			Status = VL53L010_load_additional_settings1(Dev);
+	}
+
+	/* update13_05_15 */
+	if (Status == VL53L0_ERROR_NONE) {
+		if ((Revision <= 34) && (Revision != 32)) {
+
+			for (i = 0; i < 32; i++)
+				localBuffer[i] = 0xff;
+
+			Status = VL53L0_WriteMulti(Dev, 0x90, localBuffer, 32);
+
+			Status |= VL53L0_WrByte(Dev, 0xb6, 16);
+			Status |= VL53L0_WrByte(Dev, 0xb0, 0x0);
+			Status |= VL53L0_WrByte(Dev, 0xb1, 0x0);
+			Status |= VL53L0_WrByte(Dev, 0xb2, 0xE0);
+			Status |= VL53L0_WrByte(Dev, 0xb3, 0xE0);
+			Status |= VL53L0_WrByte(Dev, 0xb4, 0xE0);
+			Status |= VL53L0_WrByte(Dev, 0xb5, 0xE0);
+		}
+	}
+
+	/* update 17_06_15_v10 */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L010_load_tuning_settings(Dev);
+
+	/* check if GO1 power is ON after load default tuning */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdByte(Dev, 0x80, &TempByte);
+		if ((TempByte != 0) && (Status == VL53L0_ERROR_NONE)) {
+			/* update 07_05_15 */
+			Status = VL53L010_load_additional_settings3(Dev);
+		}
+	}
+
+	/* Set interrupt config to new sample ready */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetGpioConfig(Dev, 0, 0,
+			VL53L010_REG_SYSTEM_INTERRUPT_GPIO_NEW_SAMPLE_READY,
+			VL53L0_INTERRUPTPOLARITY_LOW);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+		Status |= VL53L0_RdWord(Dev, 0x84, &TempWord);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L010_SETDEVICESPECIFICPARAMETER(Dev, OscFrequencyMHz,
+				    VL53L010_FIXPOINT412TOFIXPOINT1616
+						    (TempWord));
+	}
+
+	/* After static init, some device parameters may be changed,
+	 *  so update them
+	 */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L010_GetDeviceParameters(Dev, &CurrentParameters);
+
+	if (Status == VL53L0_ERROR_NONE)
+		PALDevDataSet(Dev, CurrentParameters, CurrentParameters);
+
+	/* read the sequence config and save it */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdByte(Dev, VL53L010_REG_SYSTEM_SEQUENCE_CONFIG,
+				       &TempByte);
+		if (Status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, SequenceConfig, TempByte);
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L010_PerformRefCalibration(Dev);
+
+	/* Set PAL State to standby */
+	if (Status == VL53L0_ERROR_NONE)
+		PALDevDataSet(Dev, PalState, VL53L0_STATE_IDLE);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_WaitDeviceBooted(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	/* not implemented on VL53L0 */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_ResetDevice(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	/* Set reset bit */
+	Status = VL53L0_WrByte(Dev, VL53L010_REG_SOFT_RESET_GO2_SOFT_RESET_N,
+			       0x00);
+
+	/* Wait for some time */
+	if (Status == VL53L0_ERROR_NONE) {
+		do {
+			Status = VL53L0_RdByte(Dev,
+			       VL53L010_REG_IDENTIFICATION_MODEL_ID,
+					       &Byte);
+		} while (Byte != 0x00);
+	}
+
+	/* Release reset */
+	Status = VL53L0_WrByte(Dev, VL53L010_REG_SOFT_RESET_GO2_SOFT_RESET_N,
+			       0x01);
+
+	/* Wait until correct boot-up of the device */
+	if (Status == VL53L0_ERROR_NONE) {
+		do {
+			Status = VL53L0_RdByte(Dev,
+			       VL53L010_REG_IDENTIFICATION_MODEL_ID,
+					       &Byte);
+		} while (Byte == 0x00);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* End Group PAL Init Functions */
+
+/* Group PAL Parameters Functions */
+VL53L0_Error VL53L010_SetDeviceParameters(VL53L0_DEV Dev,
+					  const VL53L0_DeviceParameters_t *
+					  pDeviceParameters)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int i;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L010_SetDeviceMode(Dev, pDeviceParameters->DeviceMode);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetHistogramMode(Dev,
+						   pDeviceParameters->
+						   HistogramMode);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetInterMeasurementPeriodMilliSeconds(Dev,
+			pDeviceParameters->InterMeasurementPeriodMilliSeconds);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetXTalkCompensationEnable(Dev,
+							     pDeviceParameters->
+					     XTalkCompensationEnable);
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetXTalkCompensationRateMegaCps(Dev,
+						  pDeviceParameters->
+						  XTalkCompensationRateMegaCps);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetOffsetCalibrationDataMicroMeter(Dev,
+						     pDeviceParameters->
+						     RangeOffsetMicroMeters);
+	}
+
+	for (i = 0; i < VL53L010_CHECKENABLE_NUMBER_OF_CHECKS; i++) {
+		if (Status == VL53L0_ERROR_NONE) {
+			Status |= VL53L010_SetLimitCheckEnable(Dev, i,
+					       pDeviceParameters->
+							       LimitChecksEnable
+							       [i]);
+		} else {
+			break;
+		}
+		if (Status == VL53L0_ERROR_NONE) {
+			Status |= VL53L010_SetLimitCheckValue(Dev, i,
+					      pDeviceParameters->
+							      LimitChecksValue
+							      [i]);
+		} else {
+			break;
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetWrapAroundCheckEnable(Dev,
+							   pDeviceParameters->
+					   WrapAroundCheckEnable);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_SetMeasurementTimingBudgetMicroSeconds(Dev,
+		pDeviceParameters->MeasurementTimingBudgetMicroSeconds);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetDeviceParameters(VL53L0_DEV Dev,
+					  VL53L0_DeviceParameters_t *
+					  pDeviceParameters)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int i;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L010_GetDeviceMode(Dev, &(pDeviceParameters->DeviceMode));
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_GetHistogramMode(Dev,
+						   &(pDeviceParameters->
+						     HistogramMode));
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_GetInterMeasurementPeriodMilliSeconds(Dev,
+		&(pDeviceParameters->InterMeasurementPeriodMilliSeconds));
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_GetXTalkCompensationEnable(Dev,
+							     &
+					     (pDeviceParameters->
+					      XTalkCompensationEnable));
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_GetXTalkCompensationRateMegaCps(Dev,
+			&(pDeviceParameters->XTalkCompensationRateMegaCps));
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_GetOffsetCalibrationDataMicroMeter(Dev,
+								     &
+						     (pDeviceParameters->
+						      RangeOffsetMicroMeters));
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		for (i = 0; i < VL53L010_CHECKENABLE_NUMBER_OF_CHECKS; i++) {
+			/* get first the values, then the enables.
+			 *VL53L0_GetLimitCheckValue will modify the enable flags
+			*/
+			if (Status == VL53L0_ERROR_NONE) {
+				Status |= VL53L010_GetLimitCheckValue(Dev, i,
+								      &
+						      (pDeviceParameters->
+						       LimitChecksValue
+								       [i]));
+			} else {
+				break;
+			}
+			if (Status == VL53L0_ERROR_NONE) {
+				Status |= VL53L010_GetLimitCheckEnable(Dev, i,
+								       &
+						       (pDeviceParameters->
+							LimitChecksEnable
+									[i]));
+			} else {
+				break;
+			}
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_GetWrapAroundCheckEnable(Dev,
+							   &(pDeviceParameters->
+					     WrapAroundCheckEnable));
+	}
+
+	/* Need to be done at the end as it uses VCSELPulsePeriod */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_GetMeasurementTimingBudgetMicroSeconds(Dev,
+		&(pDeviceParameters->MeasurementTimingBudgetMicroSeconds));
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetDeviceMode(VL53L0_DEV Dev,
+				    VL53L0_DeviceModes DeviceMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("%d", (int)DeviceMode);
+
+	switch (DeviceMode) {
+	case VL53L0_DEVICEMODE_SINGLE_RANGING:
+	case VL53L0_DEVICEMODE_CONTINUOUS_RANGING:
+	case VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING:
+	case VL53L0_DEVICEMODE_SINGLE_HISTOGRAM:
+	case VL53L0_DEVICEMODE_GPIO_DRIVE:
+	case VL53L0_DEVICEMODE_GPIO_OSC:
+		/* Supported mode */
+		VL53L010_SETPARAMETERFIELD(Dev, DeviceMode, DeviceMode);
+		break;
+	default:
+		/* Unsupported mode */
+		Status = VL53L0_ERROR_MODE_NOT_SUPPORTED;
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetDeviceMode(VL53L0_DEV Dev,
+				    VL53L0_DeviceModes *pDeviceMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("");
+
+	VL53L010_GETPARAMETERFIELD(Dev, DeviceMode, *pDeviceMode);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetHistogramMode(VL53L0_DEV Dev,
+				       VL53L0_HistogramModes HistogramMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("%d", (int)HistogramMode);
+
+	switch (HistogramMode) {
+	case VL53L0_HISTOGRAMMODE_DISABLED:
+		/* Supported mode */
+		VL53L010_SETPARAMETERFIELD(Dev, HistogramMode, HistogramMode);
+		break;
+	case VL53L0_HISTOGRAMMODE_REFERENCE_ONLY:
+	case VL53L0_HISTOGRAMMODE_RETURN_ONLY:
+	case VL53L0_HISTOGRAMMODE_BOTH:
+	default:
+		/* Unsupported mode */
+		Status = VL53L0_ERROR_MODE_NOT_SUPPORTED;
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetHistogramMode(VL53L0_DEV Dev,
+				       VL53L0_HistogramModes *pHistogramMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("");
+
+	VL53L010_GETPARAMETERFIELD(Dev, HistogramMode, *pHistogramMode);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetMeasurementTimingBudgetMicroSeconds(VL53L0_DEV Dev,
+		uint32_t   MeasurementTimingBudgetMicroSeconds)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	VL53L0_DeviceSpecificParameters_t DeviceSpecificParameters;
+	uint8_t CurrentVCSELPulsePeriod;
+	uint8_t CurrentVCSELPulsePeriodPClk;
+	uint8_t Byte;
+	uint32_t NewTimingBudgetMicroSeconds;
+	uint16_t encodedTimeOut;
+
+	LOG_FUNCTION_START("");
+
+	/* check if rangeB is done: */
+	Status = VL53L010_GetWrapAroundCheckEnable(Dev, &Byte);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (((Byte == 1) && (MeasurementTimingBudgetMicroSeconds <
+				     17000)) ||
+		    ((Byte == 0) && (MeasurementTimingBudgetMicroSeconds <
+				     12000))) {
+			Status = VL53L0_ERROR_INVALID_PARAMS;
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		NewTimingBudgetMicroSeconds =
+		    MeasurementTimingBudgetMicroSeconds - 7000;
+		if (Byte == 1) {
+			NewTimingBudgetMicroSeconds =
+			    (uint32_t) (NewTimingBudgetMicroSeconds >> 1);
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_get_vcsel_pulse_period(Dev,
+					 &CurrentVCSELPulsePeriodPClk,
+							 0);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		CurrentVCSELPulsePeriod =
+		    VL53L010_encode_vcsel_period(CurrentVCSELPulsePeriodPClk);
+		encodedTimeOut =
+		    VL53L010_calc_encoded_timeout(Dev,
+						  NewTimingBudgetMicroSeconds,
+						  (uint8_t)
+						  CurrentVCSELPulsePeriod);
+		VL53L010_SETPARAMETERFIELD(Dev,
+					   MeasurementTimingBudgetMicroSeconds,
+					   MeasurementTimingBudgetMicroSeconds);
+		VL53L010_SETDEVICESPECIFICPARAMETER(Dev, LastEncodedTimeout,
+						    encodedTimeOut);
+	}
+
+	/* Program in register */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_WrWord(Dev, VL53L010_REG_RNGA_TIMEOUT_MSB,
+				       encodedTimeOut);
+	}
+
+	/* Temp: program same value for rangeB1 and rangeB2 */
+	/* Range B1 */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_get_vcsel_pulse_period(Dev,
+					 &CurrentVCSELPulsePeriodPClk,
+							 1);
+		if (Status == VL53L0_ERROR_NONE) {
+			CurrentVCSELPulsePeriod =
+			    VL53L010_encode_vcsel_period
+			    (CurrentVCSELPulsePeriodPClk);
+			encodedTimeOut =
+			    VL53L010_calc_encoded_timeout(Dev,
+					  NewTimingBudgetMicroSeconds,
+							  (uint8_t)
+					  CurrentVCSELPulsePeriod);
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_WrWord(Dev, VL53L010_REG_RNGB1_TIMEOUT_MSB,
+				       encodedTimeOut);
+	}
+
+	/* Range B2 */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_get_vcsel_pulse_period(Dev,
+					 &CurrentVCSELPulsePeriodPClk,
+							 2);
+		if (Status == VL53L0_ERROR_NONE) {
+			CurrentVCSELPulsePeriod =
+			    VL53L010_encode_vcsel_period
+			    (CurrentVCSELPulsePeriodPClk);
+			encodedTimeOut =
+			    VL53L010_calc_encoded_timeout(Dev,
+					  NewTimingBudgetMicroSeconds,
+							  (uint8_t)
+					  CurrentVCSELPulsePeriod);
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_WrWord(Dev, VL53L010_REG_RNGB2_TIMEOUT_MSB,
+				       encodedTimeOut);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetMeasurementTimingBudgetMicroSeconds(VL53L0_DEV Dev,
+		uint32_t *pMeasurementTimingBudgetMicroSeconds)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	uint8_t CurrentVCSELPulsePeriod;
+	uint8_t CurrentVCSELPulsePeriodPClk;
+	uint16_t encodedTimeOut;
+	uint32_t RangATimingBudgetMicroSeconds = 0;
+	uint32_t RangBTimingBudgetMicroSeconds = 0;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	/* check if rangeB is done: */
+	Status = VL53L010_GetWrapAroundCheckEnable(Dev, &Byte);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L010_get_vcsel_pulse_period(Dev,
+						&CurrentVCSELPulsePeriodPClk,
+						0);
+		CurrentVCSELPulsePeriod =
+		    VL53L010_encode_vcsel_period(CurrentVCSELPulsePeriodPClk);
+
+		/* Read from register */
+		Status = VL53L0_RdWord(Dev, VL53L010_REG_RNGA_TIMEOUT_MSB,
+				       &encodedTimeOut);
+		if (Status == VL53L0_ERROR_NONE) {
+			RangATimingBudgetMicroSeconds =
+			    VL53L010_calc_ranging_wait_us(Dev,
+							  encodedTimeOut,
+					  CurrentVCSELPulsePeriod);
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (Byte == 0) {
+			*pMeasurementTimingBudgetMicroSeconds =
+			    RangATimingBudgetMicroSeconds + 7000;
+			VL53L010_SETPARAMETERFIELD(Dev,
+				   MeasurementTimingBudgetMicroSeconds,
+				   *pMeasurementTimingBudgetMicroSeconds);
+		} else {
+			VL53L010_get_vcsel_pulse_period(Dev,
+					&CurrentVCSELPulsePeriodPClk,
+							1);
+			CurrentVCSELPulsePeriod =
+			    VL53L010_encode_vcsel_period
+			    (CurrentVCSELPulsePeriodPClk);
+
+			/* Read from register */
+			Status = VL53L0_RdWord(Dev,
+					       VL53L010_REG_RNGB1_TIMEOUT_MSB,
+					       &encodedTimeOut);
+			if (Status == VL53L0_ERROR_NONE) {
+				RangBTimingBudgetMicroSeconds =
+				    VL53L010_calc_ranging_wait_us(Dev,
+						  encodedTimeOut,
+						  CurrentVCSELPulsePeriod);
+			}
+
+			*pMeasurementTimingBudgetMicroSeconds =
+			    RangATimingBudgetMicroSeconds +
+			    RangBTimingBudgetMicroSeconds + 7000;
+			VL53L010_SETPARAMETERFIELD(Dev,
+				   MeasurementTimingBudgetMicroSeconds,
+				   *pMeasurementTimingBudgetMicroSeconds);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetInterMeasurementPeriodMilliSeconds(VL53L0_DEV Dev,
+							    uint32_t
+					    InterMeasurementPeriodMilliSeconds)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	uint16_t osc_calibrate_val;
+	uint32_t IMPeriodMilliSeconds;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdWord(Dev, VL53L010_REG_OSC_CALIBRATE_VAL,
+			       &osc_calibrate_val);
+
+	if (Status == VL53L0_ERROR_NONE) {
+
+		if (osc_calibrate_val != 0) {
+
+			IMPeriodMilliSeconds =
+			    InterMeasurementPeriodMilliSeconds *
+			    osc_calibrate_val;
+		} else {
+			IMPeriodMilliSeconds =
+			    InterMeasurementPeriodMilliSeconds;
+		}
+		Status = VL53L0_WrDWord(Dev,
+			VL53L010_REG_SYSTEM_INTERMEASUREMENT_PERIOD,
+					IMPeriodMilliSeconds);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L010_SETPARAMETERFIELD(Dev,
+					   InterMeasurementPeriodMilliSeconds,
+					   InterMeasurementPeriodMilliSeconds);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetInterMeasurementPeriodMilliSeconds(VL53L0_DEV Dev,
+							    uint32_t *
+					    pInterMeasurementPeriodMilliSeconds)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	uint16_t osc_calibrate_val;
+	uint32_t IMPeriodMilliSeconds;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdWord(Dev, VL53L010_REG_OSC_CALIBRATE_VAL,
+			       &osc_calibrate_val);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdDWord(Dev,
+			VL53L010_REG_SYSTEM_INTERMEASUREMENT_PERIOD,
+					&IMPeriodMilliSeconds);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (osc_calibrate_val != 0)
+			*pInterMeasurementPeriodMilliSeconds =
+			    IMPeriodMilliSeconds / osc_calibrate_val;
+
+		VL53L010_SETPARAMETERFIELD(Dev,
+					   InterMeasurementPeriodMilliSeconds,
+			   *pInterMeasurementPeriodMilliSeconds);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetXTalkCompensationEnable(VL53L0_DEV Dev,
+						 uint8_t
+						 XTalkCompensationEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	uint8_t XTalkCompensationEnableValue;
+
+	LOG_FUNCTION_START("");
+
+	if (XTalkCompensationEnable == 0) {
+		/* Disable the crosstalk compensation */
+		XTalkCompensationEnableValue = 0x00;
+	} else {
+		/* Enable the crosstalk compensation */
+		XTalkCompensationEnableValue = 0x01;
+	}
+	Status = VL53L0_UpdateByte(Dev, VL53L010_REG_ALGO_RANGE_CHECK_ENABLES,
+				   0xFE, XTalkCompensationEnableValue);
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L010_SETPARAMETERFIELD(Dev, XTalkCompensationEnable,
+					   XTalkCompensationEnableValue);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetXTalkCompensationEnable(VL53L0_DEV Dev, uint8_t *
+						 pXTalkCompensationEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	uint8_t data;
+	uint8_t Temp;
+
+	LOG_FUNCTION_START("");
+
+	Status =
+	    VL53L0_RdByte(Dev, VL53L010_REG_ALGO_RANGE_CHECK_ENABLES, &data);
+	if (Status == VL53L0_ERROR_NONE) {
+		if (data & 0x01)
+			Temp = 0x01;
+		else
+			Temp = 0x00;
+
+		*pXTalkCompensationEnable = Temp;
+	}
+	if (Status == VL53L0_ERROR_NONE)
+		VL53L010_SETPARAMETERFIELD(Dev, XTalkCompensationEnable, Temp);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetXTalkCompensationRateMegaCps(VL53L0_DEV Dev,
+						      FixPoint1616_t
+				      XTalkCompensationRateMegaCps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("");
+
+	Status =
+	    VL53L0_WrWord(Dev, VL53L010_REG_ALGO_CROSSTALK_COMPENSATION_RATE,
+			  VL53L010_FIXPOINT1616TOFIXPOINT412
+			  (XTalkCompensationRateMegaCps));
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L010_SETPARAMETERFIELD(Dev, XTalkCompensationRateMegaCps,
+					   XTalkCompensationRateMegaCps);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetXTalkCompensationRateMegaCps(VL53L0_DEV Dev,
+						      FixPoint1616_t *
+				      pXTalkCompensationRateMegaCps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t Value;
+	FixPoint1616_t TempFix1616;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("");
+
+	Status =
+	    VL53L0_RdWord(Dev, VL53L010_REG_ALGO_CROSSTALK_COMPENSATION_RATE,
+			  (uint16_t *) &Value);
+	if (Status == VL53L0_ERROR_NONE) {
+		TempFix1616 = VL53L010_FIXPOINT412TOFIXPOINT1616(Value);
+		*pXTalkCompensationRateMegaCps = TempFix1616;
+		VL53L010_SETPARAMETERFIELD(Dev, XTalkCompensationRateMegaCps,
+					   TempFix1616);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/*
+ * CHECK LIMIT FUNCTIONS
+ */
+
+VL53L0_Error VL53L010_GetNumberOfLimitCheck(uint16_t *pNumberOfLimitCheck)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pNumberOfLimitCheck = VL53L010_CHECKENABLE_NUMBER_OF_CHECKS;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+#define VL53L010_BUILDCASESTRING(BUFFER, CODE, STRINGVALUE) \
+	do { \
+		case CODE: \
+			VL53L0_COPYSTRING(BUFFER, STRINGVALUE); \
+			break; \
+	} while (0)
+
+VL53L0_Error VL53L010_GetLimitCheckInfo(VL53L0_DEV Dev, uint16_t LimitCheckId,
+					char *pLimitCheckString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	switch (LimitCheckId) {
+		VL53L010_BUILDCASESTRING(pLimitCheckString,
+					 VL53L010_CHECKENABLE_SIGMA_FINAL_RANGE,
+					 VL53L010_STRING_CHECKENABLE_SIGMA);
+		VL53L010_BUILDCASESTRING(pLimitCheckString,
+			 VL53L010_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+			 VL53L010_STRING_CHECKENABLE_SIGNAL_RATE);
+
+	default:
+		VL53L0_COPYSTRING(pLimitCheckString,
+				  VL53L010_STRING_UNKNOW_ERROR_CODE);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetLimitCheckEnable(VL53L0_DEV Dev, uint16_t LimitCheckId,
+					  uint8_t LimitCheckEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("");
+
+	if (LimitCheckId >= VL53L010_CHECKENABLE_NUMBER_OF_CHECKS) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	} else {
+		if (LimitCheckEnable == 0) {
+			VL53L010_SETARRAYPARAMETERFIELD(Dev, LimitChecksEnable,
+							LimitCheckId, 0);
+		} else {
+			VL53L010_SETARRAYPARAMETERFIELD(Dev, LimitChecksEnable,
+							LimitCheckId, 1);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetLimitCheckEnable(VL53L0_DEV Dev, uint16_t LimitCheckId,
+					  uint8_t *pLimitCheckEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	uint8_t Temp8;
+
+	LOG_FUNCTION_START("");
+
+	if (LimitCheckId >= VL53L010_CHECKENABLE_NUMBER_OF_CHECKS) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	} else {
+		VL53L010_GETARRAYPARAMETERFIELD(Dev, LimitChecksEnable,
+						LimitCheckId, Temp8);
+		*pLimitCheckEnable = Temp8;
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetLimitCheckValue(VL53L0_DEV Dev,
+					 uint16_t LimitCheckId,
+					 FixPoint1616_t LimitCheckValue)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("");
+
+	if (LimitCheckId >= VL53L010_CHECKENABLE_NUMBER_OF_CHECKS) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	} else {
+		VL53L010_SETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+						LimitCheckId, LimitCheckValue);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetLimitCheckValue(VL53L0_DEV Dev,
+					 uint16_t LimitCheckId,
+					 FixPoint1616_t *pLimitCheckValue)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("");
+
+	if (LimitCheckId >= VL53L010_CHECKENABLE_NUMBER_OF_CHECKS) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	} else {
+		VL53L010_GETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+						LimitCheckId,
+						*pLimitCheckValue);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
+
+VL53L0_Error VL53L010_GetLimitCheckCurrent(VL53L0_DEV Dev,
+					   uint16_t LimitCheckId,
+					   FixPoint1616_t *pLimitCheckCurrent)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	if (LimitCheckId >= VL53L010_CHECKENABLE_NUMBER_OF_CHECKS) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	} else {
+		switch (LimitCheckId) {
+		case VL53L010_CHECKENABLE_SIGMA_FINAL_RANGE:
+			/* Need to run a ranging to have the latest values */
+			*pLimitCheckCurrent = PALDevDataGet(Dev, SigmaEstimate);
+
+			break;
+
+		case VL53L010_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE:
+			/* Need to run a ranging to have the latest values */
+			*pLimitCheckCurrent =
+			    PALDevDataGet(Dev, SignalEstimate);
+
+			break;
+		default:
+			Status = VL53L0_ERROR_INVALID_PARAMS;
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
+
+/*
+ * WRAPAROUND LIMIT
+ */
+VL53L0_Error VL53L010_SetWrapAroundCheckEnable(VL53L0_DEV Dev, uint8_t
+					       WrapAroundCheckEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+	uint8_t WrapAroundCheckEnableInt;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L010_REG_SYSTEM_SEQUENCE_CONFIG, &Byte);
+	if (WrapAroundCheckEnable == 0) {
+		/* Disable wraparound */
+		Byte = Byte & 0x7F;
+		WrapAroundCheckEnableInt = 0;
+	} else {
+		/* Enable wraparound */
+		Byte = Byte | 0x80;
+		WrapAroundCheckEnableInt = 1;
+	}
+
+	Status = VL53L0_WrByte(Dev, VL53L010_REG_SYSTEM_SEQUENCE_CONFIG, Byte);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		PALDevDataSet(Dev, SequenceConfig, Byte);
+		VL53L010_SETPARAMETERFIELD(Dev, WrapAroundCheckEnable,
+					   WrapAroundCheckEnableInt);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetWrapAroundCheckEnable(VL53L0_DEV Dev,
+					uint8_t *pWrapAroundCheckEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t data;
+	VL53L0_DeviceParameters_t CurrentParameters;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L010_REG_SYSTEM_SEQUENCE_CONFIG, &data);
+	if (Status == VL53L0_ERROR_NONE) {
+		PALDevDataSet(Dev, SequenceConfig, data);
+		if (data & (0x01 << 7))
+			*pWrapAroundCheckEnable = 0x01;
+		else
+			*pWrapAroundCheckEnable = 0x00;
+
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L010_SETPARAMETERFIELD(Dev, WrapAroundCheckEnable,
+					   *pWrapAroundCheckEnable);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/*  End Group PAL Parameters Functions */
+
+/* Group PAL Measurement Functions */
+VL53L0_Error VL53L010_PerformSingleMeasurement(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceModes DeviceMode;
+	uint8_t NewDatReady = 0;
+	uint32_t LoopNb;
+
+	LOG_FUNCTION_START("");
+
+	/* Get Current DeviceMode */
+	Status = VL53L010_GetDeviceMode(Dev, &DeviceMode);
+
+	/* Start immediately to run a single ranging measurement in case of
+	 * single ranging or single histogram
+	 */
+	if ((Status == VL53L0_ERROR_NONE) &&
+	    ((DeviceMode == VL53L0_DEVICEMODE_SINGLE_RANGING) ||
+	     (DeviceMode == VL53L0_DEVICEMODE_SINGLE_HISTOGRAM))) {
+		Status = VL53L010_StartMeasurement(Dev);
+	}
+
+	/* Wait until it finished
+	 *  use timeout to avoid deadlock
+	 */
+	if (Status == VL53L0_ERROR_NONE) {
+		LoopNb = 0;
+		do {
+			Status = VL53L010_GetMeasurementDataReady(Dev,
+								  &NewDatReady);
+			if ((NewDatReady == 0x01) || Status !=
+			    VL53L0_ERROR_NONE) {
+				break;
+			}
+			LoopNb = LoopNb + 1;
+			VL53L0_PollingDelay(Dev);
+		} while (LoopNb < VL53L0_DEFAULT_MAX_LOOP);
+
+		if (LoopNb >= VL53L0_DEFAULT_MAX_LOOP)
+			Status = VL53L0_ERROR_TIME_OUT;
+
+	}
+
+	/* Change PAL State in case of single ranging or single histogram
+	 */
+	if ((Status == VL53L0_ERROR_NONE) &&
+	    ((DeviceMode == VL53L0_DEVICEMODE_SINGLE_RANGING) ||
+	     (DeviceMode == VL53L0_DEVICEMODE_SINGLE_HISTOGRAM))) {
+		PALDevDataSet(Dev, PalState, VL53L0_STATE_IDLE);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_PerformRefCalibration(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t NewDatReady = 0;
+	uint8_t Byte = 0;
+	uint8_t SequenceConfig = 0;
+	uint32_t LoopNb;
+
+	LOG_FUNCTION_START("");
+
+	/* store the value of the sequence config,
+	 * this will be reset before the end of the function
+	 */
+
+	SequenceConfig = PALDevDataGet(Dev, SequenceConfig);
+
+	Status = VL53L0_WrByte(Dev, VL53L010_REG_SYSTEM_SEQUENCE_CONFIG, 0x03);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		PALDevDataSet(Dev, SequenceConfig, 0x03);
+		Status = VL53L0_WrByte(Dev, VL53L010_REG_SYSRANGE_START,
+				       VL53L010_REG_SYSRANGE_MODE_START_STOP);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* Wait until start bit has been cleared */
+		LoopNb = 0;
+		do {
+			if (LoopNb > 0)
+				Status = VL53L0_RdByte(Dev,
+				       VL53L010_REG_SYSRANGE_START,
+						       &Byte);
+			LoopNb = LoopNb + 1;
+		} while (((Byte & VL53L010_REG_SYSRANGE_MODE_START_STOP) ==
+			  VL53L010_REG_SYSRANGE_MODE_START_STOP) &&
+			 (Status == VL53L0_ERROR_NONE) &&
+			 (LoopNb < VL53L0_DEFAULT_MAX_LOOP));
+	}
+
+	/* Wait until it finished
+	 *  use timeout to avoid deadlock
+	 */
+	if (Status == VL53L0_ERROR_NONE) {
+		LoopNb = 0;
+		do {
+			Status = VL53L010_GetMeasurementDataReady(Dev,
+								  &NewDatReady);
+			if ((NewDatReady == 0x01) || Status !=
+			    VL53L0_ERROR_NONE) {
+				break;
+			}
+			LoopNb = LoopNb + 1;
+			VL53L0_PollingDelay(Dev);
+		} while (LoopNb < VL53L0_DEFAULT_MAX_LOOP);
+
+		if (LoopNb >= VL53L0_DEFAULT_MAX_LOOP)
+			Status = VL53L0_ERROR_TIME_OUT;
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x04);
+		Status |= VL53L0_RdByte(Dev, 0x30, &Byte);
+
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0x31, Byte);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x00, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L010_ClearInterruptMask(Dev, 0);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* restore the previous Sequence Config */
+		Status = VL53L0_WrByte(Dev, VL53L010_REG_SYSTEM_SEQUENCE_CONFIG,
+				       SequenceConfig);
+	}
+	if (Status == VL53L0_ERROR_NONE)
+		PALDevDataSet(Dev, SequenceConfig, SequenceConfig);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L010_API VL53L0_Error VL53L010_PerformXTalkCalibration(VL53L0_DEV Dev,
+							   FixPoint1616_t
+							   XTalkCalDistance,
+							   FixPoint1616_t *
+					   pXTalkCompensationRateMegaCps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t sum_ranging = 0;
+	uint16_t sum_spads = 0;
+	FixPoint1616_t sum_signalRate = 0;
+	FixPoint1616_t total_count = 0;
+	uint8_t xtalk_meas = 0;
+	VL53L0_RangingMeasurementData_t RangingMeasurementData;
+	FixPoint1616_t xTalkStoredMeanSignalRate;
+	FixPoint1616_t xTalkStoredMeanRange;
+	FixPoint1616_t xTalkStoredMeanRtnSpads;
+	uint32_t signalXTalkTotalPerSpad;
+	uint32_t xTalkStoredMeanRtnSpadsAsInt;
+	uint32_t xTalkCalDistanceAsInt;
+	FixPoint1616_t XTalkCompensationRateMegaCps;
+
+	LOG_FUNCTION_START("");
+
+	if (XTalkCalDistance <= 0)
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+
+	/* Disable the XTalk compensation */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L010_SetXTalkCompensationEnable(Dev, 0);
+
+	/* Perform 50 measurements and compute the averages */
+	if (Status == VL53L0_ERROR_NONE) {
+		sum_ranging = 0;
+		sum_spads = 0;
+		sum_signalRate = 0;
+		total_count = 0;
+		for (xtalk_meas = 0; xtalk_meas < 50; xtalk_meas++) {
+			Status = VL53L010_PerformSingleRangingMeasurement(Dev,
+						&RangingMeasurementData);
+
+			if (Status != VL53L0_ERROR_NONE)
+				break;
+
+			/* The range is valid when RangeStatus = 0 */
+			if (RangingMeasurementData.RangeStatus == 0) {
+				sum_ranging = sum_ranging +
+				    RangingMeasurementData.RangeMilliMeter;
+				sum_signalRate = sum_signalRate +
+				    RangingMeasurementData.SignalRateRtnMegaCps;
+				sum_spads = sum_spads +
+				    RangingMeasurementData.EffectiveSpadRtnCount
+				    / 32;
+				total_count = total_count + 1;
+			}
+		}
+
+		if (total_count == 0) {
+			/* no valid values found */
+			Status = VL53L0_ERROR_DIVISION_BY_ZERO;
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* FixPoint1616_t / uint16_t = FixPoint1616_t */
+		xTalkStoredMeanSignalRate = sum_signalRate / total_count;
+		xTalkStoredMeanRange =
+		    (FixPoint1616_t) ((uint32_t) (sum_ranging << 16) /
+				      total_count);
+		xTalkStoredMeanRtnSpads =
+		    (FixPoint1616_t) ((uint32_t) (sum_spads << 16) /
+				      total_count);
+
+		/* Round Mean Spads to Whole Number.
+		 * Typically the calculated mean SPAD count is a whole number or
+		 * very close to a whole
+		 * number, therefore any truncation will not result in a
+		 * significant  loss in accuracy.
+		 * Also, for a grey target at a typical distance of
+		 * around 400mm, around 220 SPADs will
+		 * be enabled, therefore, any truncation will result in a loss
+		 * of accuracy of less than 0.5%.
+		 */
+		xTalkStoredMeanRtnSpadsAsInt = (xTalkStoredMeanRtnSpads +
+						0x8000) >> 16;
+
+		/* Round Cal Distance to Whole Number.
+		 * Note that the cal distance is in mm,
+		 * therefore no resolution is lost.
+		 */
+		xTalkCalDistanceAsInt = (XTalkCalDistance + 0x8000) >> 16;
+
+		if (xTalkStoredMeanRtnSpadsAsInt == 0 || xTalkCalDistanceAsInt
+		    == 0 || xTalkStoredMeanRange >= XTalkCalDistance) {
+			XTalkCompensationRateMegaCps = 0;
+		} else {
+			/* Round Cal Distance to Whole Number.
+			 * Note that the cal distance is in mm, therefore no
+			 * resolution is lost.
+			 */
+			xTalkCalDistanceAsInt = (XTalkCalDistance + 0x8000) >>
+			    16;
+
+			/* Apply division by mean spad count early in the
+			 *  calculation to keep the numbers small.
+			 *  This ensures we can maintain a 32bit calculation.
+			 *  Fixed1616 / int := Fixed1616
+			 */
+			signalXTalkTotalPerSpad =
+			    (xTalkStoredMeanSignalRate) /
+			    xTalkStoredMeanRtnSpadsAsInt;
+
+			/* Complete the calculation for total Signal XTalk per
+			 *  SPAD Fixed1616 * (Fixed1616 - Fixed1616/int)
+			 *  := (2^16 * Fixed1616)
+			 */
+			signalXTalkTotalPerSpad *= ((1 << 16) -
+						    (xTalkStoredMeanRange /
+						     xTalkCalDistanceAsInt));
+
+			/* Round from 2^16 * Fixed1616, to Fixed1616. */
+			XTalkCompensationRateMegaCps = (signalXTalkTotalPerSpad
+							+ 0x8000) >> 16;
+		}
+
+		*pXTalkCompensationRateMegaCps = XTalkCompensationRateMegaCps;
+
+		/* Enable the XTalk compensation */
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L010_SetXTalkCompensationEnable(Dev, 1);
+
+		/* Enable the XTalk compensation */
+		if (Status == VL53L0_ERROR_NONE) {
+			Status = VL53L010_SetXTalkCompensationRateMegaCps(Dev,
+					XTalkCompensationRateMegaCps);
+		}
+
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L010_API VL53L0_Error VL53L010_PerformOffsetCalibration(VL53L0_DEV Dev,
+							    FixPoint1616_t
+					    CalDistanceMilliMeter,
+							    int32_t *
+							    pOffsetMicroMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t sum_ranging = 0;
+	FixPoint1616_t total_count = 0;
+	VL53L0_RangingMeasurementData_t RangingMeasurementData;
+	FixPoint1616_t StoredMeanRange;
+	uint32_t StoredMeanRangeAsInt;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	uint32_t CalDistanceAsInt_mm;
+	int meas = 0;
+
+	LOG_FUNCTION_START("");
+
+	if (CalDistanceMilliMeter <= 0)
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+
+	if (Status == VL53L0_ERROR_NONE)
+		VL53L010_SetOffsetCalibrationDataMicroMeter(Dev, 0);
+
+	/* Perform 50 measurements and compute the averages */
+	if (Status == VL53L0_ERROR_NONE) {
+		sum_ranging = 0;
+		total_count = 0;
+		for (meas = 0; meas < 50; meas++) {
+			Status =
+			    VL53L010_PerformSingleRangingMeasurement(Dev,
+						     &RangingMeasurementData);
+
+			if (Status != VL53L0_ERROR_NONE)
+				break;
+
+			/* The range is valid when RangeStatus = 0 */
+			if (RangingMeasurementData.RangeStatus == 0) {
+				sum_ranging =
+				    sum_ranging +
+				    RangingMeasurementData.RangeMilliMeter;
+				total_count = total_count + 1;
+			}
+		}
+
+		if (total_count == 0) {
+			/* no valid values found */
+			Status = VL53L0_ERROR_RANGE_ERROR;
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* FixPoint1616_t / uint16_t = FixPoint1616_t */
+		StoredMeanRange =
+		    (FixPoint1616_t) ((uint32_t) (sum_ranging << 16) /
+				      total_count);
+
+		StoredMeanRangeAsInt = (StoredMeanRange + 0x8000) >> 16;
+
+		/* Round Cal Distance to Whole Number.
+		 * Note that the cal distance is in mm,
+		 * therefore no resolution is lost.
+		 */
+		CalDistanceAsInt_mm = (CalDistanceMilliMeter + 0x8000) >> 16;
+
+		*pOffsetMicroMeter =
+		    (CalDistanceAsInt_mm - StoredMeanRangeAsInt) * 1000;
+
+		/* Apply the calculated offset */
+		if (Status == VL53L0_ERROR_NONE) {
+			VL53L010_SETPARAMETERFIELD(Dev, RangeOffsetMicroMeters,
+						   *pOffsetMicroMeter);
+			Status =
+			    VL53L010_SetOffsetCalibrationDataMicroMeter(Dev,
+							*pOffsetMicroMeter);
+		}
+
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_StartMeasurement(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceModes DeviceMode;
+	uint8_t Byte = 0;
+	uint32_t LoopNb;
+
+	LOG_FUNCTION_START("");
+
+	/* Get Current DeviceMode */
+	VL53L010_GetDeviceMode(Dev, &DeviceMode);
+
+	switch (DeviceMode) {
+	case VL53L0_DEVICEMODE_SINGLE_RANGING:
+		Status = VL53L0_WrByte(Dev, VL53L010_REG_SYSRANGE_START,
+				       VL53L010_REG_SYSRANGE_MODE_SINGLESHOT |
+				       VL53L010_REG_SYSRANGE_MODE_START_STOP);
+		break;
+	case VL53L0_DEVICEMODE_CONTINUOUS_RANGING:
+		/* Back-to-back mode */
+		Status = VL53L0_WrByte(Dev, VL53L010_REG_SYSRANGE_START,
+				       VL53L010_REG_SYSRANGE_MODE_BACKTOBACK |
+				       VL53L010_REG_SYSRANGE_MODE_START_STOP);
+		if (Status == VL53L0_ERROR_NONE) {
+			/* Set PAL State to Running */
+			PALDevDataSet(Dev, PalState, VL53L0_STATE_RUNNING);
+		}
+		break;
+	case VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING:
+		/* Continuous mode */
+		Status = VL53L0_WrByte(Dev, VL53L010_REG_SYSRANGE_START,
+				       VL53L010_REG_SYSRANGE_MODE_TIMED |
+				       VL53L010_REG_SYSRANGE_MODE_START_STOP);
+		if (Status == VL53L0_ERROR_NONE) {
+			/* Set PAL State to Running */
+			PALDevDataSet(Dev, PalState, VL53L0_STATE_RUNNING);
+		}
+		break;
+	default:
+		/* Selected mode not supported */
+		Status = VL53L0_ERROR_MODE_NOT_SUPPORTED;
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* Wait until start bit has been cleared */
+		LoopNb = 0;
+		do {
+			if (LoopNb > 0)
+				Status = VL53L0_RdByte(Dev,
+				       VL53L010_REG_SYSRANGE_START,
+						       &Byte);
+			LoopNb = LoopNb + 1;
+		} while (((Byte & VL53L010_REG_SYSRANGE_MODE_START_STOP) ==
+			  VL53L010_REG_SYSRANGE_MODE_START_STOP) &&
+			 (Status == VL53L0_ERROR_NONE) &&
+			 (LoopNb < VL53L0_DEFAULT_MAX_LOOP));
+
+		if (LoopNb >= VL53L0_DEFAULT_MAX_LOOP)
+			Status = VL53L0_ERROR_TIME_OUT;
+
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_StopMeasurement(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_WrByte(Dev, VL53L010_REG_SYSRANGE_START,
+			       VL53L010_REG_SYSRANGE_MODE_SINGLESHOT);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* Set PAL State to Idle */
+		PALDevDataSet(Dev, PalState, VL53L0_STATE_IDLE);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetMeasurementDataReady(VL53L0_DEV Dev, uint8_t
+					      *pMeasurementDataReady)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t SysRangeStatusRegister;
+	uint8_t InterruptConfig;
+	uint32_t InterruptMask;
+
+	LOG_FUNCTION_START("");
+
+	InterruptConfig = VL53L010_GETDEVICESPECIFICPARAMETER(Dev,
+					      Pin0GpioFunctionality);
+
+	if (InterruptConfig ==
+	    VL53L010_REG_SYSTEM_INTERRUPT_GPIO_NEW_SAMPLE_READY) {
+		VL53L010_GetInterruptMaskStatus(Dev, &InterruptMask);
+		if (InterruptMask ==
+		    VL53L010_REG_SYSTEM_INTERRUPT_GPIO_NEW_SAMPLE_READY) {
+			*pMeasurementDataReady = 1;
+		} else {
+			*pMeasurementDataReady = 0;
+		}
+	} else {
+		Status = VL53L0_RdByte(Dev, VL53L010_REG_RESULT_RANGE_STATUS,
+				       &SysRangeStatusRegister);
+		if (Status == VL53L0_ERROR_NONE) {
+			if (SysRangeStatusRegister & 0x01)
+				*pMeasurementDataReady = 1;
+			else
+				*pMeasurementDataReady = 0;
+
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_WaitDeviceReadyForNewMeasurement(VL53L0_DEV Dev, uint32_t
+						       MaxLoop)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	/* not implemented for VL53L0 */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetRangingMeasurementData(VL53L0_DEV Dev,
+						VL53L0_RangingMeasurementData_t
+						*pRangingMeasurementData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t DeviceRangeStatus;
+	uint8_t PalRangeStatus;
+	uint16_t AmbientRate;
+	FixPoint1616_t SignalRate;
+	FixPoint1616_t CrosstalkCompensation;
+	uint16_t EffectiveSpadRtnCount;
+	uint8_t localBuffer[14];
+	VL53L0_RangingMeasurementData_t LastRangeDataBuffer;
+
+	LOG_FUNCTION_START("");
+
+	/* use multi read even if some registers are not useful, result will be
+	 *  more efficient
+	 *  start reading at 0x14 dec20
+	 *  end reading at 0x21 dec33 total 14 bytes to read
+	 */
+	Status = VL53L0_ReadMulti(Dev, 0x14, localBuffer, 14);
+
+	if (Status == VL53L0_ERROR_NONE) {
+
+		pRangingMeasurementData->ZoneId = 0;	/* Only one zone */
+		pRangingMeasurementData->TimeStamp = 0;	/* Not Implemented */
+
+		pRangingMeasurementData->RangeMilliMeter =
+		    VL53L010_MAKEUINT16(localBuffer[11], localBuffer[10]);
+
+		pRangingMeasurementData->RangeDMaxMilliMeter = 0;
+		pRangingMeasurementData->RangeFractionalPart = 0;
+		pRangingMeasurementData->MeasurementTimeUsec = 0;
+
+		SignalRate =
+		    VL53L010_FIXPOINT97TOFIXPOINT1616(VL53L010_MAKEUINT16
+						      (localBuffer[7],
+						       localBuffer[6]));
+		pRangingMeasurementData->SignalRateRtnMegaCps = SignalRate;
+
+		AmbientRate =
+		    VL53L010_MAKEUINT16(localBuffer[9], localBuffer[8]);
+		pRangingMeasurementData->AmbientRateRtnMegaCps =
+		    VL53L010_FIXPOINT97TOFIXPOINT1616(AmbientRate);
+
+		EffectiveSpadRtnCount = VL53L010_MAKEUINT16(localBuffer[3],
+							    localBuffer[2]);
+		pRangingMeasurementData->EffectiveSpadRtnCount =
+		    EffectiveSpadRtnCount;
+
+		DeviceRangeStatus = localBuffer[0];
+
+		/* initial format = 4.12, when pass to 16.16 from 9.7 we shift
+		 *  5 bit more this will be absorbed in the further computation
+		 */
+		CrosstalkCompensation =
+		    VL53L010_FIXPOINT97TOFIXPOINT1616(VL53L010_MAKEUINT16
+						      (localBuffer[13],
+						       localBuffer[12]));
+
+		/*
+		 * For a standard definition of RangeStatus, this should return
+		 * 0 in case of good result after a ranging
+		 * The range status depends on the device so call a device
+		 * specific     function to obtain the right Status.
+		 */
+		Status = VL53L010_get_pal_range_status(Dev, DeviceRangeStatus,
+						       SignalRate,
+						       CrosstalkCompensation,
+						       EffectiveSpadRtnCount,
+						       pRangingMeasurementData,
+						       &PalRangeStatus);
+
+		if (Status == VL53L0_ERROR_NONE)
+			pRangingMeasurementData->RangeStatus = PalRangeStatus;
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* Copy last read data into Dev buffer */
+		LastRangeDataBuffer = PALDevDataGet(Dev, LastRangeMeasure);
+
+		LastRangeDataBuffer.RangeMilliMeter =
+		    pRangingMeasurementData->RangeMilliMeter;
+		LastRangeDataBuffer.RangeFractionalPart =
+		    pRangingMeasurementData->RangeFractionalPart;
+		LastRangeDataBuffer.RangeDMaxMilliMeter =
+		    pRangingMeasurementData->RangeDMaxMilliMeter;
+		LastRangeDataBuffer.MeasurementTimeUsec =
+		    pRangingMeasurementData->MeasurementTimeUsec;
+		LastRangeDataBuffer.SignalRateRtnMegaCps =
+		    pRangingMeasurementData->SignalRateRtnMegaCps;
+		LastRangeDataBuffer.AmbientRateRtnMegaCps =
+		    pRangingMeasurementData->AmbientRateRtnMegaCps;
+		LastRangeDataBuffer.EffectiveSpadRtnCount =
+		    pRangingMeasurementData->EffectiveSpadRtnCount;
+		LastRangeDataBuffer.RangeStatus =
+		    pRangingMeasurementData->RangeStatus;
+
+		PALDevDataSet(Dev, LastRangeMeasure, LastRangeDataBuffer);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetHistogramMeasurementData(VL53L0_DEV Dev,
+				  VL53L0_HistogramMeasurementData_t
+						  *pHistogramMeasurementData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_PerformSingleRangingMeasurement(VL53L0_DEV Dev,
+				      VL53L0_RangingMeasurementData_t
+						      *pRangingMeasurementData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	/*      This function will do a complete single ranging
+	 *      Here we fix the mode!
+	 */
+	Status = VL53L010_SetDeviceMode(Dev, VL53L0_DEVICEMODE_SINGLE_RANGING);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L010_PerformSingleMeasurement(Dev);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L010_GetRangingMeasurementData(Dev,
+					    pRangingMeasurementData);
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L010_ClearInterruptMask(Dev, 0);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_PerformSingleHistogramMeasurement(VL53L0_DEV Dev,
+					VL53L0_HistogramMeasurementData_t
+							*
+					pHistogramMeasurementData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetNumberOfROIZones(VL53L0_DEV Dev, uint8_t
+					  NumberOfROIZones)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	if (NumberOfROIZones != 1)
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetNumberOfROIZones(VL53L0_DEV Dev, uint8_t *
+					  pNumberOfROIZones)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pNumberOfROIZones = 1;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetMaxNumberOfROIZones(VL53L0_DEV Dev, uint8_t
+					     *pMaxNumberOfROIZones)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pMaxNumberOfROIZones = 1;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* End Group PAL Measurement Functions */
+
+VL53L0_Error VL53L010_SetGpioConfig(VL53L0_DEV Dev, uint8_t Pin,
+				    VL53L0_DeviceModes DeviceMode,
+				    VL53L0_GpioFunctionality Functionality,
+				    VL53L0_InterruptPolarity Polarity)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceSpecificParameters_t DeviceSpecificParameters;
+	uint8_t data;
+
+	LOG_FUNCTION_START("");
+
+	if (Pin != 0) {
+		Status = VL53L0_ERROR_GPIO_NOT_EXISTING;
+	} else if (DeviceMode == VL53L0_DEVICEMODE_GPIO_DRIVE) {
+		if (Polarity == VL53L0_INTERRUPTPOLARITY_LOW)
+			data = 0x10;
+		else
+			data = 1;
+
+		Status = VL53L0_WrByte(Dev,
+				       VL53L010_REG_GPIO_HV_MUX_ACTIVE_HIGH,
+				       data);
+
+	} else if (DeviceMode == VL53L0_DEVICEMODE_GPIO_OSC) {
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0x80, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x85, 0x02);
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x04);
+		Status |= VL53L0_WrByte(Dev, 0xcd, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0xcc, 0x11);
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x07);
+		Status |= VL53L0_WrByte(Dev, 0xbe, 0x00);
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x06);
+		Status |= VL53L0_WrByte(Dev, 0xcc, 0x09);
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+
+	} else {
+
+		if (Status == VL53L0_ERROR_NONE) {
+			switch (Functionality) {
+			case VL53L010_GPIOFUNCTIONALITY_OFF:
+				data = 0x00;
+				break;
+			case VL53L010_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW:
+				data = 0x01;
+				break;
+			case VL53L010_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH:
+				data = 0x02;
+				break;
+			case VL53L010_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT:
+				data = 0x03;
+				break;
+			case VL53L010_GPIOFUNCTIONALITY_NEW_MEASURE_READY:
+				data = 0x04;
+				break;
+			default:
+				Status =
+		    VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED;
+			}
+		}
+
+		if (Status == VL53L0_ERROR_NONE) {
+			Status = VL53L0_WrByte(Dev,
+			       VL53L010_REG_SYSTEM_INTERRUPT_CONFIG_GPIO,
+					       data);
+		}
+
+		if (Status == VL53L0_ERROR_NONE) {
+			if (Polarity == VL53L0_INTERRUPTPOLARITY_LOW)
+				data = 0;
+			else
+				data = (uint8_t) (1 << 4);
+
+			Status = VL53L0_UpdateByte(Dev,
+				   VL53L010_REG_GPIO_HV_MUX_ACTIVE_HIGH,
+						   0xEF, data);
+		}
+
+		if (Status == VL53L0_ERROR_NONE) {
+			VL53L010_SETDEVICESPECIFICPARAMETER(Dev,
+					    Pin0GpioFunctionality,
+							    Functionality);
+		}
+
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L010_ClearInterruptMask(Dev, 0);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetGpioConfig(VL53L0_DEV Dev, uint8_t Pin,
+				    VL53L0_DeviceModes *DeviceMode,
+				    VL53L0_GpioFunctionality *pFunctionality,
+				    VL53L0_InterruptPolarity *pPolarity)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceSpecificParameters_t DeviceSpecificParameters;
+	VL53L0_GpioFunctionality GpioFunctionality;
+	uint8_t data;
+
+	LOG_FUNCTION_START("");
+
+	if (Pin != 0) {
+		Status = VL53L0_ERROR_GPIO_NOT_EXISTING;
+	} else {
+		Status = VL53L0_RdByte(Dev,
+		       VL53L010_REG_SYSTEM_INTERRUPT_CONFIG_GPIO,
+				       &data);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		switch (data & 0x07) {
+		case 0x00:
+			GpioFunctionality = VL53L010_GPIOFUNCTIONALITY_OFF;
+			break;
+		case 0x01:
+			GpioFunctionality =
+			    VL53L010_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW;
+			break;
+		case 0x02:
+			GpioFunctionality =
+			    VL53L010_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH;
+			break;
+		case 0x03:
+			GpioFunctionality =
+			    VL53L010_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT;
+			break;
+		case 0x04:
+			GpioFunctionality =
+			    VL53L010_GPIOFUNCTIONALITY_NEW_MEASURE_READY;
+			break;
+		default:
+			Status = VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED;
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_RdByte(Dev,
+				       VL53L010_REG_GPIO_HV_MUX_ACTIVE_HIGH,
+				       &data);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if ((data & (uint8_t) (1 << 4)) == 0)
+			*pPolarity = VL53L0_INTERRUPTPOLARITY_LOW;
+		else
+			*pPolarity = VL53L0_INTERRUPTPOLARITY_HIGH;
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		*pFunctionality = GpioFunctionality;
+		VL53L010_SETDEVICESPECIFICPARAMETER(Dev, Pin0GpioFunctionality,
+						    GpioFunctionality);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetInterruptThresholds(VL53L0_DEV Dev, VL53L0_DeviceModes
+					     DeviceMode,
+					     FixPoint1616_t ThresholdLow,
+					     FixPoint1616_t ThresholdHigh)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t Threshold16;
+
+	LOG_FUNCTION_START("");
+
+	/* no dependency on DeviceMode for Ewok */
+	/* Need to divide by 2 because the FW will apply a x2 */
+	Threshold16 = (uint16_t) ((ThresholdLow >> 17) & 0x00fff);
+	Status =
+	    VL53L0_WrWord(Dev, VL53L010_REG_SYSTEM_THRESH_LOW, Threshold16);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* Need to divide by 2 because the FW will apply a x2 */
+		Threshold16 = (uint16_t) ((ThresholdHigh >> 17) & 0x00fff);
+		Status = VL53L0_WrWord(Dev, VL53L010_REG_SYSTEM_THRESH_HIGH,
+				       Threshold16);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetInterruptThresholds(VL53L0_DEV Dev, VL53L0_DeviceModes
+					     DeviceMode,
+					     FixPoint1616_t *pThresholdLow,
+					     FixPoint1616_t *pThresholdHigh)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t Threshold16;
+
+	LOG_FUNCTION_START("");
+
+	/* no dependency on DeviceMode for Ewok */
+
+	Status =
+	    VL53L0_RdWord(Dev, VL53L010_REG_SYSTEM_THRESH_LOW, &Threshold16);
+	/* Need to multiply by 2 because the FW will apply a x2 */
+	*pThresholdLow = (FixPoint1616_t) ((0x00fff & Threshold16) << 17);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdWord(Dev, VL53L010_REG_SYSTEM_THRESH_HIGH,
+				       &Threshold16);
+		/* Need to multiply by 2 because the FW will apply a x2 */
+		*pThresholdHigh =
+		    (FixPoint1616_t) ((0x00fff & Threshold16) << 17);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* Group PAL Interrupt Functions */
+VL53L0_Error VL53L010_ClearInterruptMask(VL53L0_DEV Dev, uint32_t InterruptMask)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t LoopCount;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	/* clear bit 0 range interrupt, bit 1 error interrupt */
+	Status = VL53L0_WrByte(Dev, VL53L010_REG_SYSTEM_INTERRUPT_CLEAR, 0x01);
+	LoopCount = 0;
+	do {
+		VL53L0_RdByte(Dev, VL53L010_REG_RESULT_INTERRUPT_STATUS, &Byte);
+		LoopCount++;
+	} while (((Byte & 0x07) != 0x00) && (LoopCount < 8));
+	Status = VL53L0_WrByte(Dev, VL53L010_REG_SYSTEM_INTERRUPT_CLEAR, 0x00);
+	/* clear all */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetInterruptMaskStatus(VL53L0_DEV Dev, uint32_t
+					     *pInterruptMaskStatus)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	Status =
+	    VL53L0_RdByte(Dev, VL53L010_REG_RESULT_INTERRUPT_STATUS, &Byte);
+	*pInterruptMaskStatus = Byte & 0x07;
+
+	/* check if some error occurs */
+	if (Byte & 0x18)
+		Status = VL53L0_ERROR_RANGE_ERROR;
+
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_EnableInterruptMask(VL53L0_DEV Dev,
+					  uint32_t InterruptMask)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	/* not implemented for VL53L0 */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* End Group PAL Interrupt Functions */
+
+/* Group SPAD functions */
+
+VL53L0_Error VL53L010_SetSpadAmbientDamperThreshold(VL53L0_DEV Dev, uint16_t
+						    SpadAmbientDamperThreshold)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status = VL53L0_WrWord(Dev, 0x40, SpadAmbientDamperThreshold);
+	VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetSpadAmbientDamperThreshold(VL53L0_DEV Dev, uint16_t
+						    *
+						    pSpadAmbientDamperThreshold)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status = VL53L0_RdWord(Dev, 0x40, pSpadAmbientDamperThreshold);
+	VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_SetSpadAmbientDamperFactor(VL53L0_DEV Dev, uint16_t
+						 SpadAmbientDamperFactor)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	Byte = (uint8_t) (SpadAmbientDamperFactor & 0x00FF);
+
+	VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status = VL53L0_WrByte(Dev, 0x42, Byte);
+	VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_GetSpadAmbientDamperFactor(VL53L0_DEV Dev, uint16_t
+						 *pSpadAmbientDamperFactor)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status = VL53L0_RdByte(Dev, 0x42, &Byte);
+	VL53L0_WrByte(Dev, 0xFF, 0x00);
+	*pSpadAmbientDamperFactor = (uint16_t) Byte;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* END Group SPAD functions */
+
+/*
+ * Internal functions
+ */
+
+
+
+VL53L010_EXTERNAL VL53L0_Error VL53L010_get_vcsel_pulse_period(VL53L0_DEV Dev,
+							       uint8_t *
+					       pVCSELPulsePeriod,
+							       uint8_t
+							       RangeIndex)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t vcsel_period_reg;
+
+	LOG_FUNCTION_START("");
+
+	switch (RangeIndex) {
+	case 0:
+		Status =
+		    VL53L0_RdByte(Dev, VL53L010_REG_RNGA_CONFIG_VCSEL_PERIOD,
+				  &vcsel_period_reg);
+		break;
+	case 1:
+		Status = VL53L0_RdByte(Dev,
+				       VL53L010_REG_RNGB1_CONFIG_VCSEL_PERIOD,
+				       &vcsel_period_reg);
+		break;
+	case 2:
+		Status = VL53L0_RdByte(Dev,
+				       VL53L010_REG_RNGB2_CONFIG_VCSEL_PERIOD,
+				       &vcsel_period_reg);
+		break;
+	default:
+		Status =
+		    VL53L0_RdByte(Dev, VL53L010_REG_RNGA_CONFIG_VCSEL_PERIOD,
+				  &vcsel_period_reg);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		*pVCSELPulsePeriod =
+		    VL53L010_decode_vcsel_period(vcsel_period_reg);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* To convert ms into register value */
+VL53L010_EXTERNAL uint16_t VL53L010_calc_encoded_timeout(VL53L0_DEV Dev,
+							 uint32_t
+							 timeout_period_us,
+							 uint8_t vcsel_period)
+{
+	uint32_t macro_period_ps;
+	uint32_t macro_period_ns;
+	uint32_t timeout_period_mclks = 0;
+	uint16_t timeout_overall_periods = 0;
+
+	macro_period_ps = VL53L010_calc_macro_period_ps(Dev, vcsel_period);
+	macro_period_ns = macro_period_ps / 1000;
+
+	timeout_period_mclks = (uint32_t) (((timeout_period_us * 1000) +
+					    (macro_period_ns / 2)) /
+					   macro_period_ns);
+	timeout_overall_periods = VL53L010_encode_timeout(timeout_period_mclks);
+
+	return timeout_overall_periods;
+}
+
+/* To convert register value into us */
+VL53L010_EXTERNAL uint32_t VL53L010_calc_ranging_wait_us(VL53L0_DEV Dev,
+							 uint16_t
+					 timeout_overall_periods,
+							 uint8_t vcsel_period)
+{
+	uint32_t macro_period_ps;
+	uint32_t macro_period_ns;
+	uint32_t timeout_period_mclks = 0;
+	uint32_t actual_timeout_period_us = 0;
+
+	macro_period_ps = VL53L010_calc_macro_period_ps(Dev, vcsel_period);
+	macro_period_ns = macro_period_ps / 1000;
+
+	timeout_period_mclks = VL53L010_decode_timeout(timeout_overall_periods);
+	actual_timeout_period_us = ((timeout_period_mclks * macro_period_ns) +
+				    (macro_period_ns / 2)) / 1000;
+
+	return actual_timeout_period_us;
+}
+
+VL53L010_EXTERNAL uint32_t VL53L010_calc_macro_period_ps(VL53L0_DEV Dev,
+							 uint8_t vcsel_period)
+{
+	uint32_t PLL_multiplier;
+	uint64_t PLL_period_ps;
+	uint8_t vcsel_period_pclks;
+	uint32_t macro_period_vclks;
+	uint32_t macro_period_ps;
+	FixPoint1616_t OscFrequencyMHz;
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceSpecificParameters_t DeviceSpecificParameters;
+
+	LOG_FUNCTION_START("");
+
+	PLL_multiplier = 65536 / 64;	/* PLL multiplier is 64 */
+
+	OscFrequencyMHz = VL53L010_GETDEVICESPECIFICPARAMETER(Dev,
+							      OscFrequencyMHz);
+
+	if (OscFrequencyMHz == 0) {
+		/* Use default one */
+		VL53L010_SETDEVICESPECIFICPARAMETER(Dev, OscFrequencyMHz,
+						    748421);
+		OscFrequencyMHz = 748421;
+	}
+	PLL_period_ps = (1000 * 1000 * PLL_multiplier) / OscFrequencyMHz;
+
+	vcsel_period_pclks = VL53L010_decode_vcsel_period(vcsel_period);
+
+	macro_period_vclks = 2304;
+	macro_period_ps = (uint32_t) (macro_period_vclks * vcsel_period_pclks *
+				      PLL_period_ps);
+
+	LOG_FUNCTION_END("");
+	return macro_period_ps;
+}
+
+VL53L010_EXTERNAL uint8_t VL53L010_decode_vcsel_period(uint8_t vcsel_period_reg)
+{
+
+	/*!
+	 * Converts the encoded VCSEL period register value into the real
+	 * period in PLL clocks
+	 */
+
+	uint8_t vcsel_period_pclks = 0;
+
+	vcsel_period_pclks = (vcsel_period_reg + 1) << 1;
+
+	return vcsel_period_pclks;
+}
+
+VL53L010_EXTERNAL uint8_t VL53L010_encode_vcsel_period(uint8_t
+						       vcsel_period_pclks)
+{
+
+	/*!
+	 * Converts the encoded VCSEL period register value into the real
+	 * period in PLL clocks
+	 */
+
+	uint8_t vcsel_period_reg = 0;
+
+	vcsel_period_reg = (vcsel_period_pclks >> 1) - 1;
+
+	return vcsel_period_reg;
+}
+
+VL53L010_EXTERNAL uint16_t VL53L010_encode_timeout(uint32_t timeout_mclks)
+{
+	/*!
+	 * Encode timeout in macro periods in (LSByte * 2^MSByte) + 1 format
+	 *
+	 */
+
+	uint16_t encoded_timeout = 0;
+	uint32_t ls_byte = 0;
+	uint16_t ms_byte = 0;
+
+	if (timeout_mclks > 0) {
+		ls_byte = timeout_mclks - 1;
+
+		while ((ls_byte & 0xFFFFFF00) > 0) {
+			ls_byte = ls_byte >> 1;
+			ms_byte++;
+		}
+
+		encoded_timeout = (ms_byte << 8) + (uint16_t) (ls_byte &
+							       0x000000FF);
+
+	}
+
+	return encoded_timeout;
+
+}
+
+VL53L010_EXTERNAL uint32_t VL53L010_decode_timeout(uint16_t encoded_timeout)
+{
+	/*!
+	 * Decode 16-bit timeout register value - format (LSByte * 2^MSByte) + 1
+	 *
+	 */
+
+	uint32_t timeout_mclks = 0;
+
+	timeout_mclks = ((uint32_t) (encoded_timeout & 0x00FF) << (uint32_t)
+			 ((encoded_timeout & 0xFF00) >> 8)) + 1;
+
+	return timeout_mclks;
+
+}
+
+VL53L010_EXTERNAL VL53L0_Error VL53L010_load_additional_settings1(VL53L0_DEV
+								  Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	/* update 12_05_15_v6 */
+	/* OSCT */
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x80, 0x01);
+
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x14, 0x01);
+
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xCD, 0x6C);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x86, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x87, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	/* update 12_05_15_v6 */
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xcd, 0x6c);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x90, 0x07);
+	Status |= VL53L0_WrByte(Dev, 0x91, 0x3f);
+	Status |= VL53L0_WrByte(Dev, 0x92, 0x3f);
+	Status |= VL53L0_WrByte(Dev, 0x88, 0x2b);
+	Status |= VL53L0_WrByte(Dev, 0x89, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xcd, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	/* update 12_05_15 */
+	Status |= VL53L0_WrByte(Dev, 0xb0, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xb1, 0xfc);
+	Status |= VL53L0_WrByte(Dev, 0xb2, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xb3, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xb4, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xb5, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xb6, 0xb0);
+
+	Status |= VL53L0_WrByte(Dev, 0x32, 0x03);
+
+	Status |= VL53L0_WrByte(Dev, 0x41, 0xff);
+	Status |= VL53L0_WrByte(Dev, 0x42, 0x07);
+	Status |= VL53L0_WrByte(Dev, 0x43, 0x01);
+
+	Status |= VL53L0_WrByte(Dev, 0x01, 0x01);
+
+	if (Status != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L010_EXTERNAL VL53L0_Error VL53L010_load_additional_settings3(VL53L0_DEV
+								  Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	/* update 150624_b */
+
+	Status |= VL53L0_WrByte(Dev, 0xff, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x80, 0x01);
+
+	Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+
+	Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x4f, 0x0B);
+
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x0E);
+
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x0C);
+	Status |= VL53L0_WrByte(Dev, 0x01, 0x0C);
+	Status |= VL53L0_WrByte(Dev, 0x02, 0x0A);
+	Status |= VL53L0_WrByte(Dev, 0x03, 0x0D);
+	Status |= VL53L0_WrByte(Dev, 0x04, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x05, 0x60);
+	Status |= VL53L0_WrByte(Dev, 0x06, 0x06);
+	Status |= VL53L0_WrByte(Dev, 0x07, 0x47);
+	Status |= VL53L0_WrByte(Dev, 0x08, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x09, 0x20);
+	Status |= VL53L0_WrByte(Dev, 0x0A, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x0B, 0x49);
+	Status |= VL53L0_WrByte(Dev, 0x0C, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x0D, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x0E, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x0F, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x10, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x11, 0xA1);
+	Status |= VL53L0_WrByte(Dev, 0x12, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x13, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0x14, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x15, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x16, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x17, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x18, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x19, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0x1A, 0x11);
+	Status |= VL53L0_WrByte(Dev, 0x1B, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x1C, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x1D, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x1E, 0x11);
+	Status |= VL53L0_WrByte(Dev, 0x1F, 0x08);
+	Status |= VL53L0_WrByte(Dev, 0x20, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x21, 0x02);
+	Status |= VL53L0_WrByte(Dev, 0x22, 0x0C);
+	Status |= VL53L0_WrByte(Dev, 0x23, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x24, 0x0A);
+	Status |= VL53L0_WrByte(Dev, 0x25, 0x0D);
+	Status |= VL53L0_WrByte(Dev, 0x26, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x27, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x28, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x29, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x2A, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x2B, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x2C, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x2D, 0x60);
+	Status |= VL53L0_WrByte(Dev, 0x2E, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x2F, 0x92);
+	Status |= VL53L0_WrByte(Dev, 0x30, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x31, 0x64);
+	Status |= VL53L0_WrByte(Dev, 0x32, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x33, 0x8A);
+	Status |= VL53L0_WrByte(Dev, 0x34, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x35, 0xE0);
+	Status |= VL53L0_WrByte(Dev, 0x36, 0x0F);
+	Status |= VL53L0_WrByte(Dev, 0x37, 0xAA);
+	Status |= VL53L0_WrByte(Dev, 0x38, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x39, 0xE4);
+	Status |= VL53L0_WrByte(Dev, 0x3A, 0x0F);
+	Status |= VL53L0_WrByte(Dev, 0x3B, 0xAE);
+	Status |= VL53L0_WrByte(Dev, 0x3C, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x3D, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x3E, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x3F, 0x54);
+	Status |= VL53L0_WrByte(Dev, 0x40, 0x05);
+	Status |= VL53L0_WrByte(Dev, 0x41, 0x88);
+	Status |= VL53L0_WrByte(Dev, 0x42, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x43, 0x02);
+	Status |= VL53L0_WrByte(Dev, 0x44, 0x0C);
+	Status |= VL53L0_WrByte(Dev, 0x45, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x46, 0x06);
+	Status |= VL53L0_WrByte(Dev, 0x47, 0x87);
+	Status |= VL53L0_WrByte(Dev, 0x48, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x49, 0x38);
+	Status |= VL53L0_WrByte(Dev, 0x4A, 0x2B);
+	Status |= VL53L0_WrByte(Dev, 0x4B, 0x89);
+	Status |= VL53L0_WrByte(Dev, 0x4C, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x4D, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x4E, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x4F, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x50, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x51, 0xA1);
+	Status |= VL53L0_WrByte(Dev, 0x52, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x53, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0x54, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x55, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x56, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x57, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x58, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x59, 0x0D);
+	Status |= VL53L0_WrByte(Dev, 0x5A, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x5B, 0x02);
+	Status |= VL53L0_WrByte(Dev, 0x5C, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x5D, 0x60);
+	Status |= VL53L0_WrByte(Dev, 0x5E, 0x0D);
+	Status |= VL53L0_WrByte(Dev, 0x5F, 0x67);
+	Status |= VL53L0_WrByte(Dev, 0x60, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x61, 0x60);
+	Status |= VL53L0_WrByte(Dev, 0x62, 0x0D);
+	Status |= VL53L0_WrByte(Dev, 0x63, 0xB0);
+	Status |= VL53L0_WrByte(Dev, 0x64, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x65, 0x20);
+	Status |= VL53L0_WrByte(Dev, 0x66, 0x29);
+	Status |= VL53L0_WrByte(Dev, 0x67, 0xC1);
+	Status |= VL53L0_WrByte(Dev, 0x68, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x69, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x6A, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x6B, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x6C, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x6D, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x6E, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x6F, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x70, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x71, 0xA1);
+	Status |= VL53L0_WrByte(Dev, 0x72, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x73, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0x74, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x75, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x76, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x77, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x78, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x79, 0x0D);
+	Status |= VL53L0_WrByte(Dev, 0x7A, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x7B, 0x1B);
+	Status |= VL53L0_WrByte(Dev, 0x7C, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x7D, 0x82);
+	Status |= VL53L0_WrByte(Dev, 0x7E, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x7F, 0x24);
+	Status |= VL53L0_WrByte(Dev, 0x80, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x81, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x82, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x83, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x84, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x85, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x86, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x87, 0x21);
+	Status |= VL53L0_WrByte(Dev, 0x88, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x89, 0x58);
+	Status |= VL53L0_WrByte(Dev, 0x8A, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x8B, 0xCC);
+	Status |= VL53L0_WrByte(Dev, 0x8C, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x8D, 0xC3);
+	Status |= VL53L0_WrByte(Dev, 0x8E, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x8F, 0x94);
+	Status |= VL53L0_WrByte(Dev, 0x90, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x91, 0x53);
+	Status |= VL53L0_WrByte(Dev, 0x92, 0x1E);
+	Status |= VL53L0_WrByte(Dev, 0x93, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x94, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x95, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x96, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x97, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x98, 0x20);
+	Status |= VL53L0_WrByte(Dev, 0x99, 0x20);
+	Status |= VL53L0_WrByte(Dev, 0x9A, 0x08);
+	Status |= VL53L0_WrByte(Dev, 0x9B, 0x10);
+	Status |= VL53L0_WrByte(Dev, 0x9C, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x9D, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x9E, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x9F, 0x50);
+	Status |= VL53L0_WrByte(Dev, 0xA0, 0x2B);
+	Status |= VL53L0_WrByte(Dev, 0xA1, 0xB1);
+	Status |= VL53L0_WrByte(Dev, 0xA2, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xA3, 0x02);
+	Status |= VL53L0_WrByte(Dev, 0xA4, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0xA5, 0x50);
+	Status |= VL53L0_WrByte(Dev, 0xA6, 0x2C);
+	Status |= VL53L0_WrByte(Dev, 0xA7, 0x11);
+	Status |= VL53L0_WrByte(Dev, 0xA8, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xA9, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xAA, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xAB, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xAC, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xAD, 0xA1);
+	Status |= VL53L0_WrByte(Dev, 0xAE, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xAF, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0xB0, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xB1, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0xB2, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0xB3, 0x4E);
+	Status |= VL53L0_WrByte(Dev, 0xB4, 0x2D);
+	Status |= VL53L0_WrByte(Dev, 0xB5, 0x47);
+	Status |= VL53L0_WrByte(Dev, 0xB6, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xB7, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xB8, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xB9, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xBA, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xBB, 0xA7);
+	Status |= VL53L0_WrByte(Dev, 0xBC, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xBD, 0xA6);
+	Status |= VL53L0_WrByte(Dev, 0xBE, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0xBF, 0x02);
+	Status |= VL53L0_WrByte(Dev, 0xC0, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0xC1, 0x30);
+	Status |= VL53L0_WrByte(Dev, 0xC2, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xC3, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0xC4, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0xC5, 0x60);
+	Status |= VL53L0_WrByte(Dev, 0xC6, 0x2D);
+	Status |= VL53L0_WrByte(Dev, 0xC7, 0x89);
+	Status |= VL53L0_WrByte(Dev, 0xC8, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xC9, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xCA, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xCB, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xCC, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xCD, 0xA1);
+	Status |= VL53L0_WrByte(Dev, 0xCE, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xCF, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0xD0, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xD1, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0xD2, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xD3, 0x25);
+	Status |= VL53L0_WrByte(Dev, 0xD4, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xD5, 0x2E);
+	Status |= VL53L0_WrByte(Dev, 0xD6, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xD7, 0x25);
+	Status |= VL53L0_WrByte(Dev, 0xD8, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xD9, 0x2E);
+	Status |= VL53L0_WrByte(Dev, 0xDA, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0xDB, 0xF3);
+	Status |= VL53L0_WrByte(Dev, 0xDC, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0xDD, 0xEA);
+	Status |= VL53L0_WrByte(Dev, 0xDE, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0xDF, 0x58);
+	Status |= VL53L0_WrByte(Dev, 0xE0, 0x2C);
+	Status |= VL53L0_WrByte(Dev, 0xE1, 0xD9);
+	Status |= VL53L0_WrByte(Dev, 0xE2, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xE3, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xE4, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xE5, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xE6, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xE7, 0xA1);
+	Status |= VL53L0_WrByte(Dev, 0xE8, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xE9, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0xEA, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xEB, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0xEC, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0xED, 0x26);
+	Status |= VL53L0_WrByte(Dev, 0xEE, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xEF, 0xDC);
+	Status |= VL53L0_WrByte(Dev, 0xF0, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0xF1, 0x58);
+	Status |= VL53L0_WrByte(Dev, 0xF2, 0x2F);
+	Status |= VL53L0_WrByte(Dev, 0xF3, 0x21);
+	Status |= VL53L0_WrByte(Dev, 0xF4, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xF5, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xF6, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xF7, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xF8, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xF9, 0xA1);
+	Status |= VL53L0_WrByte(Dev, 0xFA, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xFB, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0xFC, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xFD, 0x04);
+	Status |= VL53L0_WrWord(Dev, 0xFE, 0x01E3);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x0F);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x01, 0x48);
+	Status |= VL53L0_WrByte(Dev, 0x02, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x03, 0x60);
+	Status |= VL53L0_WrByte(Dev, 0x04, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x05, 0xA4);
+	Status |= VL53L0_WrByte(Dev, 0x06, 0x05);
+	Status |= VL53L0_WrByte(Dev, 0x07, 0xB8);
+	Status |= VL53L0_WrByte(Dev, 0x08, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x09, 0x07);
+	Status |= VL53L0_WrByte(Dev, 0x0A, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x0B, 0x60);
+	Status |= VL53L0_WrByte(Dev, 0x0C, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x0D, 0x6B);
+	Status |= VL53L0_WrByte(Dev, 0x0E, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x0F, 0x64);
+	Status |= VL53L0_WrByte(Dev, 0x10, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x11, 0x3C);
+	Status |= VL53L0_WrByte(Dev, 0x12, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x13, 0x60);
+	Status |= VL53L0_WrByte(Dev, 0x14, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x15, 0x74);
+	Status |= VL53L0_WrByte(Dev, 0x16, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x17, 0x02);
+	Status |= VL53L0_WrByte(Dev, 0x18, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x19, 0x02);
+	Status |= VL53L0_WrByte(Dev, 0x1A, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x1B, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x1C, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x1D, 0xA2);
+	Status |= VL53L0_WrByte(Dev, 0x1E, 0x07);
+	Status |= VL53L0_WrByte(Dev, 0x1F, 0x8E);
+	Status |= VL53L0_WrByte(Dev, 0x20, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x21, 0x50);
+	Status |= VL53L0_WrByte(Dev, 0x22, 0x2E);
+	Status |= VL53L0_WrByte(Dev, 0x23, 0xC9);
+	Status |= VL53L0_WrByte(Dev, 0x24, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x25, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x26, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x27, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x28, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x29, 0xA1);
+	Status |= VL53L0_WrByte(Dev, 0x2A, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x2B, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0x2C, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x2D, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x2E, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x2F, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x30, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x31, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x32, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x33, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0x34, 0x11);
+	Status |= VL53L0_WrByte(Dev, 0x35, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x36, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x37, 0x05);
+	Status |= VL53L0_WrByte(Dev, 0x38, 0x11);
+	Status |= VL53L0_WrByte(Dev, 0x39, 0x08);
+	Status |= VL53L0_WrByte(Dev, 0x3A, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x3B, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x3C, 0x11);
+	Status |= VL53L0_WrByte(Dev, 0x3D, 0x18);
+	Status |= VL53L0_WrByte(Dev, 0x3E, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x3F, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x40, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x41, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x42, 0x0C);
+	Status |= VL53L0_WrByte(Dev, 0x43, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x44, 0x0A);
+	Status |= VL53L0_WrByte(Dev, 0x45, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x46, 0x0C);
+	Status |= VL53L0_WrByte(Dev, 0x47, 0x08);
+	Status |= VL53L0_WrByte(Dev, 0x48, 0x0A);
+	Status |= VL53L0_WrByte(Dev, 0x49, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x4A, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x4B, 0x40);
+	Status |= VL53L0_WrByte(Dev, 0x4C, 0x2F);
+	Status |= VL53L0_WrByte(Dev, 0x4D, 0xD1);
+	Status |= VL53L0_WrByte(Dev, 0x4E, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x4F, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x50, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x51, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x52, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x53, 0xA1);
+	Status |= VL53L0_WrByte(Dev, 0x54, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x55, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0x56, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x57, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x58, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x59, 0x11);
+	Status |= VL53L0_WrByte(Dev, 0x5A, 0x05);
+	Status |= VL53L0_WrByte(Dev, 0x5B, 0x48);
+	Status |= VL53L0_WrByte(Dev, 0x5C, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x5D, 0x60);
+	Status |= VL53L0_WrByte(Dev, 0x5E, 0x0A);
+	Status |= VL53L0_WrByte(Dev, 0x5F, 0xA2);
+	Status |= VL53L0_WrByte(Dev, 0x60, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x61, 0x60);
+	Status |= VL53L0_WrByte(Dev, 0x62, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x63, 0x3E);
+	Status |= VL53L0_WrByte(Dev, 0x64, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x65, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x66, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x67, 0x54);
+	Status |= VL53L0_WrByte(Dev, 0x68, 0x05);
+	Status |= VL53L0_WrByte(Dev, 0x69, 0x80);
+	Status |= VL53L0_WrByte(Dev, 0x6A, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x6B, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x6C, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x6D, 0x38);
+	Status |= VL53L0_WrByte(Dev, 0x6E, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x6F, 0xE1);
+	Status |= VL53L0_WrByte(Dev, 0x70, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x71, 0x02);
+	Status |= VL53L0_WrByte(Dev, 0x72, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x73, 0x38);
+	Status |= VL53L0_WrByte(Dev, 0x74, 0x29);
+	Status |= VL53L0_WrByte(Dev, 0x75, 0x21);
+	Status |= VL53L0_WrByte(Dev, 0x76, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x77, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x78, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x79, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x7A, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x7B, 0xA1);
+	Status |= VL53L0_WrByte(Dev, 0x7C, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x7D, 0xA0);
+	Status |= VL53L0_WrByte(Dev, 0x7E, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x7F, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x80, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x81, 0x33);
+	Status |= VL53L0_WrByte(Dev, 0x82, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x83, 0x6A);
+	Status |= VL53L0_WrByte(Dev, 0x84, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x85, 0x61);
+	Status |= VL53L0_WrByte(Dev, 0x86, 0x05);
+	Status |= VL53L0_WrByte(Dev, 0x87, 0xF9);
+	Status |= VL53L0_WrByte(Dev, 0x88, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x89, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x8A, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x8B, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x8C, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x8D, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0x8E, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x8F, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x90, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x91, 0x66);
+	Status |= VL53L0_WrByte(Dev, 0x92, 0x2A);
+	Status |= VL53L0_WrByte(Dev, 0x93, 0x67);
+	Status |= VL53L0_WrByte(Dev, 0x94, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x95, 0x02);
+	Status |= VL53L0_WrByte(Dev, 0x96, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x97, 0x66);
+	Status |= VL53L0_WrByte(Dev, 0x98, 0x2A);
+	Status |= VL53L0_WrByte(Dev, 0x99, 0xAF);
+	Status |= VL53L0_WrByte(Dev, 0x9A, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x9B, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x9C, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x9D, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x9E, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x9F, 0xA7);
+	Status |= VL53L0_WrByte(Dev, 0xA0, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xA1, 0xA6);
+	Status |= VL53L0_WrByte(Dev, 0xA2, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xA3, 0x04);
+
+	Status |= VL53L0_WrByte(Dev, 0xff, 0x04);
+
+	Status |= VL53L0_WrByte(Dev, 0x79, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0x7B, 0x16);
+	Status |= VL53L0_WrByte(Dev, 0x7D, 0x2B);
+	Status |= VL53L0_WrByte(Dev, 0x7F, 0x3B);
+	Status |= VL53L0_WrByte(Dev, 0x81, 0x59);
+	Status |= VL53L0_WrByte(Dev, 0x83, 0x62);
+	Status |= VL53L0_WrByte(Dev, 0x85, 0x69);
+	Status |= VL53L0_WrByte(Dev, 0x87, 0x76);
+	Status |= VL53L0_WrByte(Dev, 0x89, 0x7F);
+	Status |= VL53L0_WrByte(Dev, 0x8B, 0x98);
+	Status |= VL53L0_WrByte(Dev, 0x8D, 0xAC);
+	Status |= VL53L0_WrByte(Dev, 0x8F, 0xC0);
+	Status |= VL53L0_WrByte(Dev, 0x90, 0x0C);
+	Status |= VL53L0_WrByte(Dev, 0x91, 0x30);
+	Status |= VL53L0_WrByte(Dev, 0x92, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0x93, 0x02);
+	Status |= VL53L0_WrByte(Dev, 0x94, 0x37);
+	Status |= VL53L0_WrByte(Dev, 0x95, 0x62);
+
+	Status |= VL53L0_WrByte(Dev, 0x96, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x97, 0x08);
+	Status |= VL53L0_WrByte(Dev, 0x98, 0x07);
+	Status |= VL53L0_WrByte(Dev, 0x99, 0x18);
+	Status |= VL53L0_WrByte(Dev, 0x9A, 0x07);
+	Status |= VL53L0_WrByte(Dev, 0x9B, 0x6F);
+	Status |= VL53L0_WrByte(Dev, 0x9C, 0x05);
+	Status |= VL53L0_WrByte(Dev, 0x9D, 0xD4);
+	Status |= VL53L0_WrByte(Dev, 0x9E, 0x0A);
+	Status |= VL53L0_WrByte(Dev, 0x9F, 0x6E);
+	Status |= VL53L0_WrByte(Dev, 0xA0, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0xA1, 0xA2);
+	Status |= VL53L0_WrByte(Dev, 0xA2, 0x0C);
+	Status |= VL53L0_WrByte(Dev, 0xA3, 0xAA);
+	Status |= VL53L0_WrByte(Dev, 0xA4, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xA5, 0x97);
+	Status |= VL53L0_WrByte(Dev, 0xA6, 0x0B);
+	Status |= VL53L0_WrByte(Dev, 0xA7, 0xD8);
+	Status |= VL53L0_WrByte(Dev, 0xA8, 0x0A);
+	Status |= VL53L0_WrByte(Dev, 0xA9, 0xD7);
+	Status |= VL53L0_WrByte(Dev, 0xAA, 0x08);
+	Status |= VL53L0_WrByte(Dev, 0xAB, 0xF6);
+	Status |= VL53L0_WrByte(Dev, 0xAC, 0x07);
+	Status |= VL53L0_WrByte(Dev, 0xAD, 0x1A);
+	Status |= VL53L0_WrByte(Dev, 0xAE, 0x0C);
+	Status |= VL53L0_WrByte(Dev, 0xAF, 0x49);
+	Status |= VL53L0_WrByte(Dev, 0xB0, 0x09);
+	Status |= VL53L0_WrByte(Dev, 0xB1, 0x17);
+	Status |= VL53L0_WrByte(Dev, 0xB2, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0xB3, 0xCD);
+	Status |= VL53L0_WrByte(Dev, 0xB4, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0xB5, 0x55);
+
+	Status |= VL53L0_WrByte(Dev, 0x72, 0xFF);
+	Status |= VL53L0_WrByte(Dev, 0x73, 0xFF);
+
+	Status |= VL53L0_WrByte(Dev, 0x74, 0xE0);
+
+	Status |= VL53L0_WrByte(Dev, 0x70, 0x01);
+
+	Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0xff, 0x00);
+
+	if (Status != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L010_EXTERNAL VL53L0_Error VL53L010_check_part_used(VL53L0_DEV Dev,
+							uint8_t *Revision,
+							VL53L0_DeviceInfo_t *
+							pVL53L0_DeviceInfo)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t ModuleIdInt;
+	char *ProductId_tmp;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L010_get_info_from_device(Dev);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		ModuleIdInt =
+		    VL53L010_GETDEVICESPECIFICPARAMETER(Dev, ModuleId);
+
+		if (ModuleIdInt == 0) {
+			*Revision = 0;
+			VL53L0_COPYSTRING(pVL53L0_DeviceInfo->ProductId, "");
+		} else {
+			*Revision =
+			    VL53L010_GETDEVICESPECIFICPARAMETER(Dev, Revision);
+			ProductId_tmp =
+			    VL53L010_GETDEVICESPECIFICPARAMETER(Dev, ProductId);
+			VL53L0_COPYSTRING(pVL53L0_DeviceInfo->ProductId,
+					  ProductId_tmp);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L010_EXTERNAL VL53L0_Error VL53L010_get_info_from_device(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t byte;
+	uint32_t TmpDWord;
+	VL53L0_DeviceSpecificParameters_t DeviceSpecificParameters;
+	uint8_t ModuleId;
+	uint8_t Revision;
+	uint8_t ReferenceSpadCount;
+	uint8_t ReferenceSpadType;
+	char ProductId[19];
+	char *ProductId_tmp;
+	uint8_t ReadDataFromDeviceDone;
+
+	LOG_FUNCTION_START("");
+
+	ReadDataFromDeviceDone = VL53L010_GETDEVICESPECIFICPARAMETER(Dev,
+						     ReadDataFromDeviceDone);
+
+	/* This access is done only once after that a GetDeviceInfo or
+	 * datainit is done
+	 */
+	if (ReadDataFromDeviceDone == 0) {
+
+		Status |= VL53L0_WrByte(Dev, 0x80, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x06);
+		Status |= VL53L0_RdByte(Dev, 0x83, &byte);
+		Status |= VL53L0_WrByte(Dev, 0x83, byte | 4);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x07);
+		Status |= VL53L0_WrByte(Dev, 0x81, 0x01);
+
+		Status |= VL53L0_PollingDelay(Dev);
+
+		Status |= VL53L0_WrByte(Dev, 0x80, 0x01);
+
+		Status |= VL53L0_WrByte(Dev, 0x94, 0x6b);
+		Status |= VL53L010_device_read_strobe(Dev);
+		Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+		ReferenceSpadCount = (uint8_t) ((TmpDWord >> 8) & 0x07f);
+		ReferenceSpadType = (uint8_t) ((TmpDWord >> 15) & 0x01);
+
+		Status |= VL53L0_WrByte(Dev, 0x94, 0x02);
+		Status |= VL53L010_device_read_strobe(Dev);
+		Status |= VL53L0_RdByte(Dev, 0x90, &ModuleId);
+
+		Status |= VL53L0_WrByte(Dev, 0x94, 0x7B);
+		Status |= VL53L010_device_read_strobe(Dev);
+		Status |= VL53L0_RdByte(Dev, 0x90, &Revision);
+
+		Status |= VL53L0_WrByte(Dev, 0x94, 0x77);
+		Status |= VL53L010_device_read_strobe(Dev);
+		Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+		ProductId[0] = (char)((TmpDWord >> 25) & 0x07f);
+		ProductId[1] = (char)((TmpDWord >> 18) & 0x07f);
+		ProductId[2] = (char)((TmpDWord >> 11) & 0x07f);
+		ProductId[3] = (char)((TmpDWord >> 4) & 0x07f);
+
+		byte = (uint8_t) ((TmpDWord & 0x00f) << 3);
+
+		Status |= VL53L0_WrByte(Dev, 0x94, 0x78);
+		Status |= VL53L010_device_read_strobe(Dev);
+		Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+		ProductId[4] = (char)(byte + ((TmpDWord >> 29) & 0x07f));
+		ProductId[5] = (char)((TmpDWord >> 22) & 0x07f);
+		ProductId[6] = (char)((TmpDWord >> 15) & 0x07f);
+		ProductId[7] = (char)((TmpDWord >> 8) & 0x07f);
+		ProductId[8] = (char)((TmpDWord >> 1) & 0x07f);
+
+		byte = (uint8_t) ((TmpDWord & 0x001) << 6);
+
+		Status |= VL53L0_WrByte(Dev, 0x94, 0x79);
+
+		Status |= VL53L010_device_read_strobe(Dev);
+
+		Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+		ProductId[9] = (char)(byte + ((TmpDWord >> 26) & 0x07f));
+		ProductId[10] = (char)((TmpDWord >> 19) & 0x07f);
+		ProductId[11] = (char)((TmpDWord >> 12) & 0x07f);
+		ProductId[12] = (char)((TmpDWord >> 5) & 0x07f);
+
+		byte = (uint8_t) ((TmpDWord & 0x01f) << 2);
+
+		Status |= VL53L0_WrByte(Dev, 0x94, 0x80);
+
+		Status |= VL53L010_device_read_strobe(Dev);
+
+		Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+		ProductId[13] = (char)(byte + ((TmpDWord >> 30) & 0x07f));
+		ProductId[14] = (char)((TmpDWord >> 23) & 0x07f);
+		ProductId[15] = (char)((TmpDWord >> 16) & 0x07f);
+		ProductId[16] = (char)((TmpDWord >> 9) & 0x07f);
+		ProductId[17] = (char)((TmpDWord >> 2) & 0x07f);
+		ProductId[18] = '\0';
+
+		Status |= VL53L0_WrByte(Dev, 0x81, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x06);
+		Status |= VL53L0_RdByte(Dev, 0x83, &byte);
+		Status |= VL53L0_WrByte(Dev, 0x83, byte & 0xfb);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x00, 0x01);
+
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0x80, 0x00);
+
+		if (Status == VL53L0_ERROR_NONE) {
+			VL53L010_SETDEVICESPECIFICPARAMETER(Dev,
+							    ModuleId, ModuleId);
+
+			VL53L010_SETDEVICESPECIFICPARAMETER(Dev,
+							    Revision, Revision);
+
+			VL53L010_SETDEVICESPECIFICPARAMETER(Dev,
+							    ReferenceSpadCount,
+							    ReferenceSpadCount);
+
+			VL53L010_SETDEVICESPECIFICPARAMETER(Dev,
+							    ReferenceSpadType,
+							    ReferenceSpadType);
+
+			ProductId_tmp = VL53L010_GETDEVICESPECIFICPARAMETER(Dev,
+							    ProductId);
+			VL53L0_COPYSTRING(ProductId_tmp, ProductId);
+
+			VL53L010_SETDEVICESPECIFICPARAMETER(Dev,
+					    ReadDataFromDeviceDone,
+							    1);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+uint32_t VL53L010_isqrt(uint32_t num)
+{
+
+	/*
+	 * Implements an integer square root
+	 *
+	 * From: http://en.wikipedia.org/wiki/Methods_of_computing_square_roots
+	 */
+
+	uint32_t res = 0;
+	uint32_t bit = 1 << 30;
+	/* The second-to-top bit is set: 1 << 14 for
+	 *  16-bits, 1 << 30 for 32 bits
+	 */
+	/* "bit" starts at the highest power of four <= the argument. */
+	while (bit > num)
+		bit >>= 2;
+
+	while (bit != 0) {
+		if (num >= res + bit) {
+			num -= res + bit;
+			res = (res >> 1) + bit;
+		} else
+			res >>= 1;
+
+		bit >>= 2;
+	}
+
+	return res;
+}
+
+VL53L0_Error VL53L010_device_read_strobe(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t strobe;
+	uint32_t LoopNb;
+
+	LOG_FUNCTION_START("");
+
+	Status |= VL53L0_WrByte(Dev, 0x83, 0x00);
+
+	/* polling use timeout to avoid deadlock */
+	if (Status == VL53L0_ERROR_NONE) {
+		LoopNb = 0;
+		do {
+			Status = VL53L0_RdByte(Dev, 0x83, &strobe);
+			if ((strobe != 0x00) || Status != VL53L0_ERROR_NONE)
+				break;
+
+			LoopNb = LoopNb + 1;
+		} while (LoopNb < VL53L0_DEFAULT_MAX_LOOP);
+
+		if (LoopNb >= VL53L0_DEFAULT_MAX_LOOP)
+			Status = VL53L0_ERROR_TIME_OUT;
+
+	}
+
+	Status |= VL53L0_WrByte(Dev, 0x83, 0x01);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
+
+uint32_t VL53L010_quadrature_sum(uint32_t a, uint32_t b)
+{
+	/*
+	 * Implements a quadrature sum
+	 *
+	 * rea = sqrt(a^2 + b^2)
+	 *
+	 * Trap overflow case max input value is 65535 (16-bit value)
+	 * as internal calc are 32-bit wide
+	 *
+	 * If overflow then seta output to maximum
+	 */
+	uint32_t res = 0;
+
+	if (a > 65535 || b > 65535)
+		res = 65535;
+	else
+		res = VL53L010_isqrt(a * a + b * b);
+
+	return res;
+}
+
+VL53L0_Error VL53L010_get_jmp_vcsel_ambient_rate(VL53L0_DEV Dev,
+						 uint32_t *pAmbient_rate_kcps,
+						 uint32_t *pVcsel_rate_kcps,
+						 uint32_t *
+						 pSignalTotalEventsRtn)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t encodedTimeOut;
+
+	uint32_t total_periods_elapsed_rtn__macrop = 0;
+	uint32_t result_core__total_periods_elapsed_rtn = 0;
+	uint32_t rngb1_config__timeout__macrop = 0;
+	uint32_t rngb2_config__timeout__macrop = 0;
+	uint32_t result_core__ambient_window_events_rtn = 0;
+	uint32_t result_core__signal_total_events_rtn = 0;
+	uint8_t last_woi_period;
+	uint8_t rnga_config__vcsel_period;
+	uint8_t rngb1_config__vcsel_period;
+	uint8_t rngb2_config__vcsel_period;
+	uint8_t global_config__vcsel_width;
+
+	uint32_t ambient_duration_us = 0;
+	uint32_t vcsel_duration_us = 0;
+
+	uint32_t pll_period_us = 0;
+
+	LOG_FUNCTION_START("");
+
+	/* read the following */
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_RdDWord(Dev, 0xC8,
+				 &result_core__total_periods_elapsed_rtn);
+	Status |= VL53L0_RdDWord(Dev, 0xF0, &pll_period_us);
+	Status |= VL53L0_RdDWord(Dev, 0xbc,
+				 &result_core__ambient_window_events_rtn);
+	Status |= VL53L0_RdDWord(Dev, 0xc4,
+				 &result_core__signal_total_events_rtn);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		result_core__total_periods_elapsed_rtn =
+		    (int32_t) (result_core__total_periods_elapsed_rtn &
+			       0x00ffffff);
+		pll_period_us = (int32_t) (pll_period_us & 0x3ffff);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdWord(Dev, VL53L010_REG_RNGB1_TIMEOUT_MSB,
+				       &encodedTimeOut);
+		if (Status == VL53L0_ERROR_NONE)
+			rngb1_config__timeout__macrop =
+			    VL53L010_decode_timeout(encodedTimeOut) - 1;
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status =
+		    VL53L0_RdByte(Dev, VL53L010_REG_RNGA_CONFIG_VCSEL_PERIOD,
+				  &rnga_config__vcsel_period);
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdByte(Dev,
+				       VL53L010_REG_RNGB1_CONFIG_VCSEL_PERIOD,
+				       &rngb1_config__vcsel_period);
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdByte(Dev,
+				       VL53L010_REG_RNGB2_CONFIG_VCSEL_PERIOD,
+				       &rngb2_config__vcsel_period);
+	}
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_RdByte(Dev, 0x32, &global_config__vcsel_width);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdWord(Dev, VL53L010_REG_RNGB2_TIMEOUT_MSB,
+				       &encodedTimeOut);
+		if (Status == VL53L0_ERROR_NONE)
+			rngb2_config__timeout__macrop =
+			    VL53L010_decode_timeout(encodedTimeOut) - 1;
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		total_periods_elapsed_rtn__macrop =
+		    result_core__total_periods_elapsed_rtn + 1;
+
+		if (result_core__total_periods_elapsed_rtn ==
+		    rngb1_config__timeout__macrop) {
+			last_woi_period = rngb1_config__vcsel_period;
+		} else if (result_core__total_periods_elapsed_rtn ==
+			   rngb2_config__timeout__macrop) {
+			last_woi_period = rngb2_config__vcsel_period;
+		} else {
+			last_woi_period = rnga_config__vcsel_period;
+
+		}
+		/* 512 = 1<<9  ==> 24-9=15 */
+		ambient_duration_us = last_woi_period *
+		    total_periods_elapsed_rtn__macrop * pll_period_us;
+		ambient_duration_us = ambient_duration_us / 1000;
+
+		if (ambient_duration_us != 0) {
+			*pAmbient_rate_kcps = ((1 << 15) *
+			       result_core__ambient_window_events_rtn)
+			    / ambient_duration_us;
+		} else {
+			Status = VL53L0_ERROR_DIVISION_BY_ZERO;
+		}
+
+		if (Status == VL53L0_ERROR_NONE) {
+
+			/* 2048 = 1<<11  ==> 24-11=13 */
+			vcsel_duration_us =
+			    (10 * global_config__vcsel_width + 4)
+			    * total_periods_elapsed_rtn__macrop * pll_period_us;
+			vcsel_duration_us = vcsel_duration_us / 10000;
+
+			if (vcsel_duration_us != 0) {
+				*pVcsel_rate_kcps = ((1 << 13) *
+				     result_core__signal_total_events_rtn)
+				    / vcsel_duration_us;
+				*pSignalTotalEventsRtn =
+				    result_core__signal_total_events_rtn;
+			} else {
+				Status = VL53L0_ERROR_DIVISION_BY_ZERO;
+			}
+
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
+
+VL53L0_Error VL53L010_calc_sigma_estimate(VL53L0_DEV Dev,
+					  VL53L0_RangingMeasurementData_t
+					  *pRangingMeasurementData,
+					  FixPoint1616_t *pSigmaEstimate)
+{
+	/* Expressed in 100ths of a ns, i.e. centi-ns */
+	const uint32_t cPulseEffectiveWidth_centi_ns = 800;
+	/* Expressed in 100ths of a ns, i.e. centi-ns */
+	const uint32_t cAmbientEffectiveWidth_centi_ns = 600;
+	const FixPoint1616_t cSigmaEstRef = 0x00000042;
+	/* pico secs */
+	const uint32_t cVcselPulseWidth_ps = 4700;
+	const FixPoint1616_t cSigmaEstMax = 0x028F87AE;
+	/* Time Of Flight per mm (6.6 pico secs) */
+	const FixPoint1616_t cTOF_per_mm_ps = 0x0006999A;
+	const uint32_t c16BitRoundingParam = 0x00008000;
+	const FixPoint1616_t cMaxXTalk_kcps = 0x00320000;
+
+	uint32_t signalTotalEventsRtn;
+	FixPoint1616_t sigmaEstimateP1;
+	FixPoint1616_t sigmaEstimateP2;
+	FixPoint1616_t sigmaEstimateP3;
+	FixPoint1616_t deltaT_ps;
+	FixPoint1616_t pwMult;
+	FixPoint1616_t sigmaEstRtn;
+	FixPoint1616_t sigmaEstimate;
+	FixPoint1616_t xTalkCorrection;
+	uint32_t signalTotalEventsRtnRawVal;
+	FixPoint1616_t ambientRate_kcps;
+	FixPoint1616_t vcselRate_kcps;
+	FixPoint1616_t xTalkCompRate_mcps;
+	uint32_t xTalkCompRate_kcps;
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	FixPoint1616_t diff1_mcps;
+	FixPoint1616_t diff2_mcps;
+	FixPoint1616_t sqr1;
+	FixPoint1616_t sqr2;
+	FixPoint1616_t sqrSum;
+	FixPoint1616_t sqrtResult_centi_ns;
+	FixPoint1616_t sqrtResult;
+
+	/*! \addtogroup calc_sigma_estimate
+	 * @{
+	 *
+	 * Estimates the range sigma based on the
+	 *
+	 *  - vcsel_rate_kcps
+	 *  - ambient_rate_kcps
+	 *  - signal_total_events
+	 *  - xtalk_rate
+	 *
+	 * and the following parameters
+	 *
+	 *  - SigmaEstRefArray
+	 *  - SigmaEstEffPulseWidth
+	 *  - SigmaEstEffAmbWidth
+	 */
+
+	LOG_FUNCTION_START("");
+
+	VL53L010_GETPARAMETERFIELD(Dev, XTalkCompensationRateMegaCps,
+				   xTalkCompRate_mcps);
+	/*
+	 * We work in kcps rather than mcps as this helps keep
+	 * within the confines of the 32 Fix1616 type.
+	 */
+
+	xTalkCompRate_kcps = xTalkCompRate_mcps * 1000;
+	if (xTalkCompRate_kcps > cMaxXTalk_kcps)
+		xTalkCompRate_kcps = cMaxXTalk_kcps;
+
+	Status = VL53L010_get_jmp_vcsel_ambient_rate(Dev,
+						     &ambientRate_kcps,
+						     &vcselRate_kcps,
+				     &signalTotalEventsRtnRawVal);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (vcselRate_kcps == 0) {
+			Status = VL53L0_ERROR_DIVISION_BY_ZERO;
+		} else {
+			signalTotalEventsRtn = signalTotalEventsRtnRawVal;
+			if (signalTotalEventsRtn < 1)
+				signalTotalEventsRtn = 1;
+
+			/*
+			 * Calculate individual components of the main
+			 * equation - replicating the equation implemented in
+			 * the script OpenAll_Ewok_ranging_data.jsl.
+			 *
+			 * sigmaEstimateP1 represents the effective pulse width,
+			 * which is a tuning parameter, rather than a real
+			 * value.
+			 *
+			 * sigmaEstimateP2 represents the ambient/signal rate
+			 * ratio expressed as a multiple of the effective
+			 * ambient width (tuning parameter).
+			 *
+			 * sigmaEstimateP3 provides the signal event component,
+			 * with the knowledge that
+			 *      - Noise of a square pulse is 1/sqrt(12) of the
+			 * pulse width.
+			 *      - at 0Lux, sigma is proportional to
+			 *      effectiveVcselPulseWidth /
+			 *      sqrt(12 * signalTotalEvents)
+			 *
+			 * deltaT_ps represents the time of flight in pico secs
+			 * for the current range measurement, using the
+			 * "TOF per mm" constant (in ps).
+			 */
+
+			sigmaEstimateP1 = cPulseEffectiveWidth_centi_ns;
+
+			/*
+			 *  ((FixPoint1616 << 16)* uint32)/FixPoint1616 =
+			 *  FixPoint1616
+			 */
+			sigmaEstimateP2 = (ambientRate_kcps << 16) /
+			    vcselRate_kcps;
+			sigmaEstimateP2 *= cAmbientEffectiveWidth_centi_ns;
+
+			sigmaEstimateP3 = 2 *
+			    VL53L010_isqrt(signalTotalEventsRtn * 12);
+
+			/* uint32 * FixPoint1616 = FixPoint1616 */
+			deltaT_ps =
+			    pRangingMeasurementData->RangeMilliMeter *
+			    cTOF_per_mm_ps;
+
+			/*
+			 * vcselRate - xtalkCompRate
+			 * (uint32 << 16) - FixPoint1616 = FixPoint1616.
+			 * Divide result by 1000 to convert to mcps.
+			 * 500 is added to ensure rounding when integer
+			 * division truncates.
+			 */
+			diff1_mcps = (((vcselRate_kcps << 16) -
+				       xTalkCompRate_kcps) + 500) / 1000;
+
+			/* vcselRate + xtalkCompRate */
+			diff2_mcps = (((vcselRate_kcps << 16) +
+				       xTalkCompRate_kcps) + 500) / 1000;
+
+			/* Shift by 12 bits to increase resolution prior to the
+			 *  division
+			 */
+			diff1_mcps <<= 12;
+
+			/* FixPoint0428/FixPoint1616 = FixPoint2012 */
+			xTalkCorrection = abs(diff1_mcps / diff2_mcps);
+
+			/* FixPoint2012 << 4 = FixPoint1616 */
+			xTalkCorrection <<= 4;
+
+			/* FixPoint1616/uint32 = FixPoint1616 */
+			pwMult = deltaT_ps / cVcselPulseWidth_ps;
+			/* smaller than 1.0f */
+
+			/*
+			 * FixPoint1616 * FixPoint1616 = FixPoint3232, however
+			 * both values are small enough such that32 bits will
+			 * not be exceeded.
+			 */
+			pwMult *= ((1 << 16) - xTalkCorrection);
+
+			/* (FixPoint3232 >> 16) = FixPoint1616 */
+			pwMult = (pwMult + c16BitRoundingParam) >> 16;
+
+			/* FixPoint1616 + FixPoint1616 = FixPoint1616 */
+			pwMult += (1 << 16);
+
+			/*
+			 * At this point the value will be 1.xx, therefore if we
+			 * square the value this will exceed 32 bits. To address
+			 * this perform a single shift to the right before the
+			 * multiplication.
+			 */
+			pwMult >>= 1;
+			/* FixPoint1715 * FixPoint1715 = FixPoint3430 */
+			pwMult = pwMult * pwMult;
+
+			/* (FixPoint3430 >> 14) = Fix1616 */
+			pwMult >>= 14;
+
+			/* FixPoint1616 * FixPoint1616 = FixPoint3232 */
+			sqr1 = pwMult * sigmaEstimateP1;
+
+			/* (FixPoint1616 >> 12) = FixPoint2804 */
+			sqr1 = (sqr1 + 0x800) >> 12;
+
+			/* FixPoint2804 * FixPoint2804 = FixPoint5608 */
+			sqr1 *= sqr1;
+
+			sqr2 = sigmaEstimateP2;
+
+			/* (FixPoint1616 >> 12) = FixPoint2804 */
+			sqr2 = (sqr2 + 0x800) >> 12;
+
+			/* FixPoint2804 * FixPoint2804 = FixPoint5608 */
+			sqr2 *= sqr2;
+
+			/* FixPoint5608 + FixPoint5608 = FixPoint5608 */
+			sqrSum = sqr1 + sqr2;
+
+			/* SQRT(FixPoint5608) = FixPoint2804 */
+			sqrtResult_centi_ns = VL53L010_isqrt(sqrSum);
+
+			/* (FixPoint2804 << 12) = FixPoint1616 */
+			sqrtResult_centi_ns <<= 12;
+
+			/*
+			 * Note that the Speed Of Light is expressed in um
+			 * per 1E-10 seconds (2997). Therefore to get mm/ns
+			 * we have to divide by 10000
+			 */
+			sigmaEstRtn =
+			    ((sqrtResult_centi_ns + 50) / 100 *
+			     VL53L010_SPEED_OF_LIGHT_IN_AIR);
+			sigmaEstRtn /= (sigmaEstimateP3);
+			/* Add 5000 before dividing by 10000 to ensure
+			 * rounding.
+			 */
+			sigmaEstRtn += 5000;
+			sigmaEstRtn /= 10000;
+
+			/* FixPoint1616 * FixPoint1616 = FixPoint3232 */
+			sqr1 = sigmaEstRtn * sigmaEstRtn;
+			/* FixPoint1616 * FixPoint1616 = FixPoint3232 */
+			sqr2 = cSigmaEstRef * cSigmaEstRef;
+
+			/* sqrt(FixPoint3232 << 12) = FixPoint1022 */
+			sqrtResult = VL53L010_isqrt((sqr1 + sqr2) << 12);
+			sqrtResult = (sqrtResult + 0x20) >> 6;
+			/*
+			 * Note that the Shift by 12bits increases resolution
+			 * prior to the sqrt, therefore the result must be
+			 * shifted by 6bits to the right to revert back to the
+			 * FixPoint1616 format.
+			 */
+
+			sigmaEstimate = 1000 * sqrtResult;
+
+			if ((vcselRate_kcps < 1) ||
+			    (signalTotalEventsRtn < 1) ||
+			    (sigmaEstimate > cSigmaEstMax)) {
+				sigmaEstimate = cSigmaEstMax;
+			}
+
+			*pSigmaEstimate = (uint32_t) (sigmaEstimate);
+			PALDevDataSet(Dev, SigmaEstimate, *pSigmaEstimate);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L010_get_pal_range_status(VL53L0_DEV Dev,
+					   uint8_t DeviceRangeStatus,
+					   FixPoint1616_t SignalRate,
+					   FixPoint1616_t CrosstalkCompensation,
+					   uint16_t EffectiveSpadRtnCount,
+					   VL53L0_RangingMeasurementData_t *
+					   pRangingMeasurementData,
+					   uint8_t *pPalRangeStatus)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t tmpByte;
+	uint8_t SigmaLimitCheckEnable;
+	uint8_t SignalLimitCheckEnable;
+	FixPoint1616_t SigmaEstimate;
+	FixPoint1616_t SignalEstimate;
+	FixPoint1616_t SigmaLimitValue;
+	FixPoint1616_t SignalLimitValue;
+	uint8_t DeviceRangeStatusInternal = 0;
+
+	LOG_FUNCTION_START("");
+
+	/*
+	 * VL53L0 has a good ranging when the value of the
+	 * DeviceRangeStatus = 11. This function will replace
+	 * the value 0 with the value 11 in the DeviceRangeStatus.
+	 * In addition, the SigmaEstimator is not included in the
+	 * VL53L0 DeviceRangeStatus, this will be added in the
+	 * PalRangeStatus.
+	 */
+
+	DeviceRangeStatusInternal = ((DeviceRangeStatus & 0x78) >> 3);
+
+	if (DeviceRangeStatusInternal == 11)
+		tmpByte = 0;
+	else if (DeviceRangeStatusInternal == 0)
+		tmpByte = 11;
+	else
+		tmpByte = DeviceRangeStatusInternal;
+
+	/*
+	 * Check if Sigma limit is enabled, if yes then do comparison with
+	 * limit value and put the result back into pPalRangeStatus.
+	 */
+	Status = VL53L010_GetLimitCheckEnable(Dev,
+			      VL53L010_CHECKENABLE_SIGMA_FINAL_RANGE,
+					      &SigmaLimitCheckEnable);
+
+	if ((SigmaLimitCheckEnable != 0) && (Status == VL53L0_ERROR_NONE)) {
+		/*
+		 * compute the Sigma and check with limit
+		 */
+		Status = VL53L010_calc_sigma_estimate(Dev,
+						      pRangingMeasurementData,
+						      &SigmaEstimate);
+
+		if (Status == VL53L0_ERROR_NONE) {
+			Status = VL53L010_GetLimitCheckValue(Dev,
+					VL53L010_CHECKENABLE_SIGMA_FINAL_RANGE,
+					&SigmaLimitValue);
+
+			if ((SigmaLimitValue > 0) &&
+			    (SigmaEstimate > SigmaLimitValue)) {
+				/* Limit Fail add 2^4 to range status */
+				tmpByte += 16;
+			}
+		}
+	}
+
+	/*
+	 * Check if Signal limit is enabled, if yes then do comparison with
+	 * limit value and put the result back into pPalRangeStatus.
+	 */
+	Status = VL53L010_GetLimitCheckEnable(Dev,
+			VL53L010_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+			&SignalLimitCheckEnable);
+
+	if ((SignalLimitCheckEnable != 0) && (Status == VL53L0_ERROR_NONE)) {
+		/*
+		 * compute the Signal and check with limit
+		 */
+
+		SignalEstimate = (FixPoint1616_t) (SignalRate -
+			(FixPoint1616_t)
+			((EffectiveSpadRtnCount * CrosstalkCompensation) >> 1));
+
+		PALDevDataSet(Dev, SignalEstimate, SignalEstimate);
+
+		Status = VL53L010_GetLimitCheckValue(Dev,
+				VL53L010_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+				&SignalLimitValue);
+
+		if ((SignalLimitValue > 0) && (SignalEstimate <
+					       SignalLimitValue)) {
+			/* Limit Fail add 2^5 to range status */
+			tmpByte += 32;
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		*pPalRangeStatus = tmpByte;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
diff --git a/drivers/input/misc/vl53L0/src/vl53l010_tuning.c b/drivers/input/misc/vl53L0/src/vl53l010_tuning.c
new file mode 100644
index 000000000000..ee3f57872ffc
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l010_tuning.c
@@ -0,0 +1,138 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of STMicroelectronics nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+ NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+ IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ ******************************************************************************/
+
+#include "vl53l010_tuning.h"
+
+#define LOG_FUNCTION_START(fmt, ...) \
+	_LOG_FUNCTION_START(TRACE_MODULE_API, fmt, ##__VA_ARGS__)
+#define LOG_FUNCTION_END(status, ...) \
+	_LOG_FUNCTION_END(TRACE_MODULE_API, status, ##__VA_ARGS__)
+#define LOG_FUNCTION_END_FMT(status, fmt, ...) \
+	_LOG_FUNCTION_END_FMT(TRACE_MODULE_API, status, fmt, ##__VA_ARGS__)
+
+#ifdef VL53L0_LOG_ENABLE
+#define trace_print(level, ...) \
+	trace_print_module_function(TRACE_MODULE_API,\
+	level, TRACE_FUNCTION_NONE, ##__VA_ARGS__)
+#endif
+
+/*
+ * //////////////////////////////////////////////////////
+ * ////       DEFAULT TUNING SETTINGS                ////
+ * //////////////////////////////////////////////////////
+ */
+VL53L0_Error VL53L010_load_tuning_settings(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	/* update 14_12_15_v11 */
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x91, 0x3C);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x54, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x33, 0x05);
+	Status |= VL53L0_WrByte(Dev, 0x32, 0x03);
+	Status |= VL53L0_WrByte(Dev, 0x30, 0x05);
+	Status |= VL53L0_WrByte(Dev, 0x50, 0x05);
+	Status |= VL53L0_WrByte(Dev, 0x60, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x70, 0x06);
+
+	Status |= VL53L0_WrByte(Dev, 0x46, 0x1a);
+	Status |= VL53L0_WrWord(Dev, 0x51, 0x01a3);
+	Status |= VL53L0_WrWord(Dev, 0x61, 0x01c4);
+	Status |= VL53L0_WrWord(Dev, 0x71, 0x018c);
+
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x31, 0x0f);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x66, 0x38);
+
+	Status |= VL53L0_WrByte(Dev, 0x47, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x48, 0xff);
+	Status |= VL53L0_WrByte(Dev, 0x57, 0x4c);
+	Status |= VL53L0_WrByte(Dev, 0x67, 0x3c);
+	Status |= VL53L0_WrByte(Dev, 0x77, 0x5c);
+
+	Status |= VL53L0_WrWord(Dev, 0x44, 0x0000);
+
+	Status |= VL53L0_WrByte(Dev, 0x27, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x55, 0x00);
+
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x30, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	Status |= VL53L0_WrByte(Dev, 0x10, 0x0f);
+	Status |= VL53L0_WrByte(Dev, 0x11, 0xff);
+	Status |= VL53L0_WrByte(Dev, 0x40, 0x82);
+	Status |= VL53L0_WrByte(Dev, 0x41, 0xff);
+	Status |= VL53L0_WrByte(Dev, 0x42, 0x07);
+	Status |= VL53L0_WrByte(Dev, 0x43, 0x12);
+
+	Status |= VL53L0_WrByte(Dev, 0x20, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x21, 0x00);
+
+	Status |= VL53L0_WrByte(Dev, 0x28, 0x06);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x48, 0x28);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	Status |= VL53L0_WrByte(Dev, 0x7a, 0x0a);
+	Status |= VL53L0_WrByte(Dev, 0x7b, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x78, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x44, 0xff);
+	Status |= VL53L0_WrByte(Dev, 0x45, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x46, 0x10);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	Status |= VL53L0_WrByte(Dev, 0x04, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x05, 0x04);
+	Status |= VL53L0_WrByte(Dev, 0x06, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x07, 0x00);
+
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x0d, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x80, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x01, 0xF8);
+
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x8e, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	if (Status != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
diff --git a/drivers/input/misc/vl53L0/src/vl53l0_api.c b/drivers/input/misc/vl53L0/src/vl53l0_api.c
new file mode 100644
index 000000000000..f9c2c2a4b7b7
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l0_api.c
@@ -0,0 +1,3109 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of STMicroelectronics nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+ NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+ IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ ******************************************************************************/
+
+#include "vl53l0_api.h"
+#include "vl53l0_tuning.h"
+#include "vl53l0_interrupt_threshold_settings.h"
+#include "vl53l0_api_core.h"
+#include "vl53l0_api_histogram.h"
+#include "vl53l0_api_calibration.h"
+#include "vl53l0_api_strings.h"
+
+#ifndef __KERNEL__
+#include <stdlib.h>
+#endif
+#define LOG_FUNCTION_START(fmt, ...) \
+	_LOG_FUNCTION_START(TRACE_MODULE_API, fmt, ##__VA_ARGS__)
+#define LOG_FUNCTION_END(status, ...) \
+	_LOG_FUNCTION_END(TRACE_MODULE_API, status, ##__VA_ARGS__)
+#define LOG_FUNCTION_END_FMT(status, fmt, ...) \
+	_LOG_FUNCTION_END_FMT(TRACE_MODULE_API, status, fmt, ##__VA_ARGS__)
+
+#ifdef VL53L0_LOG_ENABLE
+#define trace_print(level, ...) trace_print_module_function(TRACE_MODULE_API, \
+	level, TRACE_FUNCTION_NONE, ##__VA_ARGS__)
+#endif
+
+/* Group PAL General Functions */
+
+VL53L0_Error VL53L0_GetVersion(VL53L0_Version_t *pVersion)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	pVersion->major = VL53L0_IMPLEMENTATION_VER_MAJOR;
+	pVersion->minor = VL53L0_IMPLEMENTATION_VER_MINOR;
+	pVersion->build = VL53L0_IMPLEMENTATION_VER_SUB;
+
+	pVersion->revision = VL53L0_IMPLEMENTATION_VER_REVISION;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetPalSpecVersion(VL53L0_Version_t *pPalSpecVersion)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	pPalSpecVersion->major = VL53L0_SPECIFICATION_VER_MAJOR;
+	pPalSpecVersion->minor = VL53L0_SPECIFICATION_VER_MINOR;
+	pPalSpecVersion->build = VL53L0_SPECIFICATION_VER_SUB;
+
+	pPalSpecVersion->revision = VL53L0_SPECIFICATION_VER_REVISION;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetProductRevision(VL53L0_DEV Dev,
+	uint8_t *pProductRevisionMajor, uint8_t *pProductRevisionMinor)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t revision_id;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L0_REG_IDENTIFICATION_REVISION_ID,
+		&revision_id);
+	*pProductRevisionMajor = 1;
+	*pProductRevisionMinor = (revision_id & 0xF0) >> 4;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
+
+VL53L0_Error VL53L0_GetDeviceInfo(VL53L0_DEV Dev,
+	VL53L0_DeviceInfo_t *pVL53L0_DeviceInfo)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_device_info(Dev, pVL53L0_DeviceInfo);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetDeviceErrorStatus(VL53L0_DEV Dev,
+	VL53L0_DeviceError *pDeviceErrorStatus)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t RangeStatus;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L0_REG_RESULT_RANGE_STATUS,
+		&RangeStatus);
+
+	*pDeviceErrorStatus = (VL53L0_DeviceError)((RangeStatus & 0x78) >> 3);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_GetDeviceErrorString(VL53L0_DeviceError ErrorCode,
+	char *pDeviceErrorString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_device_error_string(ErrorCode, pDeviceErrorString);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetRangeStatusString(uint8_t RangeStatus,
+	char *pRangeStatusString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_range_status_string(RangeStatus,
+		pRangeStatusString);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetPalErrorString(VL53L0_Error PalErrorCode,
+	char *pPalErrorString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_pal_error_string(PalErrorCode, pPalErrorString);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetPalStateString(VL53L0_State PalStateCode,
+	char *pPalStateString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_pal_state_string(PalStateCode, pPalStateString);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetPalState(VL53L0_DEV Dev, VL53L0_State *pPalState)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pPalState = PALDevDataGet(Dev, PalState);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetPowerMode(VL53L0_DEV Dev, VL53L0_PowerModes PowerMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	/* Only level1 of Power mode exists */
+	if ((PowerMode != VL53L0_POWERMODE_STANDBY_LEVEL1)
+		&& (PowerMode != VL53L0_POWERMODE_IDLE_LEVEL1)) {
+		Status = VL53L0_ERROR_MODE_NOT_SUPPORTED;
+	} else if (PowerMode == VL53L0_POWERMODE_STANDBY_LEVEL1) {
+		/* set the standby level1 of power mode */
+		Status = VL53L0_WrByte(Dev, 0x80, 0x00);
+		if (Status == VL53L0_ERROR_NONE) {
+			/* Set PAL State to standby */
+			PALDevDataSet(Dev, PalState, VL53L0_STATE_STANDBY);
+			PALDevDataSet(Dev, PowerMode,
+				VL53L0_POWERMODE_STANDBY_LEVEL1);
+		}
+
+	} else {
+		/* VL53L0_POWERMODE_IDLE_LEVEL1 */
+		Status = VL53L0_WrByte(Dev, 0x80, 0x00);
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L0_StaticInit(Dev);
+
+		if (Status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, PowerMode,
+				VL53L0_POWERMODE_IDLE_LEVEL1);
+
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetPowerMode(VL53L0_DEV Dev, VL53L0_PowerModes *pPowerMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	/* Only level1 of Power mode exists */
+	Status = VL53L0_RdByte(Dev, 0x80, &Byte);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (Byte == 1) {
+			PALDevDataSet(Dev, PowerMode,
+				VL53L0_POWERMODE_IDLE_LEVEL1);
+		} else {
+			PALDevDataSet(Dev, PowerMode,
+				VL53L0_POWERMODE_STANDBY_LEVEL1);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetOffsetCalibrationDataMicroMeter(VL53L0_DEV Dev,
+	int32_t OffsetCalibrationDataMicroMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_set_offset_calibration_data_micro_meter(Dev,
+		OffsetCalibrationDataMicroMeter);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetOffsetCalibrationDataMicroMeter(VL53L0_DEV Dev,
+	int32_t *pOffsetCalibrationDataMicroMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_offset_calibration_data_micro_meter(Dev,
+		pOffsetCalibrationDataMicroMeter);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetLinearityCorrectiveGain(VL53L0_DEV Dev,
+	int16_t LinearityCorrectiveGain)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	if ((LinearityCorrectiveGain < 0) || (LinearityCorrectiveGain > 1000))
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	else {
+		PALDevDataSet(Dev, LinearityCorrectiveGain,
+			LinearityCorrectiveGain);
+
+		if (LinearityCorrectiveGain != 1000) {
+			/* Disable FW Xtalk */
+			Status = VL53L0_WrWord(Dev,
+			VL53L0_REG_CROSSTALK_COMPENSATION_PEAK_RATE_MCPS, 0);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetLinearityCorrectiveGain(VL53L0_DEV Dev,
+	uint16_t *pLinearityCorrectiveGain)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pLinearityCorrectiveGain = PALDevDataGet(Dev, LinearityCorrectiveGain);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetGroupParamHold(VL53L0_DEV Dev, uint8_t GroupParamHold)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	/* not implemented on VL53L0 */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetUpperLimitMilliMeter(VL53L0_DEV Dev,
+	uint16_t *pUpperLimitMilliMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	/* not implemented on VL53L0 */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetTotalSignalRate(VL53L0_DEV Dev,
+	FixPoint1616_t *pTotalSignalRate)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_RangingMeasurementData_t LastRangeDataBuffer;
+
+	LOG_FUNCTION_START("");
+
+	LastRangeDataBuffer = PALDevDataGet(Dev, LastRangeMeasure);
+
+	Status = VL53L0_get_total_signal_rate(
+		Dev, &LastRangeDataBuffer, pTotalSignalRate);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* End Group PAL General Functions */
+
+/* Group PAL Init Functions */
+VL53L0_Error VL53L0_SetDeviceAddress(VL53L0_DEV Dev, uint8_t DeviceAddress)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_WrByte(Dev, VL53L0_REG_I2C_SLAVE_DEVICE_ADDRESS,
+		DeviceAddress / 2);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_DataInit(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters;
+	int i;
+	uint8_t StopVariable;
+
+	LOG_FUNCTION_START("");
+
+	/* by default the I2C is running at 1V8 if you want to change it you
+	 * need to include this define at compilation level.
+	 */
+#ifdef USE_I2C_2V8
+	Status = VL53L0_UpdateByte(Dev,
+		VL53L0_REG_VHV_CONFIG_PAD_SCL_SDA__EXTSUP_HV,
+		0xFE,
+		0x01);
+#endif
+
+	/* Set I2C standard mode */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev, 0x88, 0x00);
+
+	VL53L0_SETDEVICESPECIFICPARAMETER(Dev, ReadDataFromDeviceDone, 0);
+
+#ifdef USE_IQC_STATION
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_apply_offset_adjustment(Dev);
+#endif
+
+	/* Default value is 1000 for Linearity Corrective Gain */
+	PALDevDataSet(Dev, LinearityCorrectiveGain, 1000);
+
+	/* Dmax default Parameter */
+	PALDevDataSet(Dev, DmaxCalRangeMilliMeter, 400);
+	PALDevDataSet(Dev, DmaxCalSignalRateRtnMegaCps,
+		(FixPoint1616_t)((0x00016B85))); /* 1.42 No Cover Glass*/
+
+	/* Set Default static parameters
+	 *set first temporary values 9.44MHz * 65536 = 618660
+	 */
+	VL53L0_SETDEVICESPECIFICPARAMETER(Dev, OscFrequencyMHz, 618660);
+
+	/* Set Default XTalkCompensationRateMegaCps to 0  */
+	VL53L0_SETPARAMETERFIELD(Dev, XTalkCompensationRateMegaCps, 0);
+
+	/* Get default parameters */
+	Status = VL53L0_GetDeviceParameters(Dev, &CurrentParameters);
+	if (Status == VL53L0_ERROR_NONE) {
+		/* initialize PAL values */
+		CurrentParameters.DeviceMode = VL53L0_DEVICEMODE_SINGLE_RANGING;
+		CurrentParameters.HistogramMode = VL53L0_HISTOGRAMMODE_DISABLED;
+		PALDevDataSet(Dev, CurrentParameters, CurrentParameters);
+	}
+
+	/* Sigma estimator variable */
+	PALDevDataSet(Dev, SigmaEstRefArray, 100);
+	PALDevDataSet(Dev, SigmaEstEffPulseWidth, 900);
+	PALDevDataSet(Dev, SigmaEstEffAmbWidth, 500);
+	PALDevDataSet(Dev, targetRefRate, 0x0A00); /* 20 MCPS in 9:7 format */
+
+	/* Use internal default settings */
+	PALDevDataSet(Dev, UseInternalTuningSettings, 1);
+
+	Status |= VL53L0_WrByte(Dev, 0x80, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+	Status |= VL53L0_RdByte(Dev, 0x91, &StopVariable);
+	PALDevDataSet(Dev, StopVariable, StopVariable);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0x80, 0x00);
+
+	/* Enable all check */
+	for (i = 0; i < VL53L0_CHECKENABLE_NUMBER_OF_CHECKS; i++) {
+		if (Status == VL53L0_ERROR_NONE)
+			Status |= VL53L0_SetLimitCheckEnable(Dev, i, 1);
+		else
+			break;
+
+	}
+
+	/* Disable the following checks */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetLimitCheckEnable(Dev,
+			VL53L0_CHECKENABLE_SIGNAL_REF_CLIP, 0);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetLimitCheckEnable(Dev,
+			VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD, 0);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetLimitCheckEnable(Dev,
+			VL53L0_CHECKENABLE_SIGNAL_RATE_MSRC, 0);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetLimitCheckEnable(Dev,
+			VL53L0_CHECKENABLE_SIGNAL_RATE_PRE_RANGE, 0);
+
+	/* Limit default values */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_SetLimitCheckValue(Dev,
+			VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE,
+				(FixPoint1616_t)(18 * 65536));
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_SetLimitCheckValue(Dev,
+			VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+				(FixPoint1616_t)(25 * 65536 / 100));
+				/* 0.25 * 65536 */
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_SetLimitCheckValue(Dev,
+			VL53L0_CHECKENABLE_SIGNAL_REF_CLIP,
+				(FixPoint1616_t)(35 * 65536));
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_SetLimitCheckValue(Dev,
+			VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				(FixPoint1616_t)(0 * 65536));
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+
+		PALDevDataSet(Dev, SequenceConfig, 0xFF);
+		Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG,
+			0xFF);
+
+		/* Set PAL state to tell that we are waiting for call to
+		 * VL53L0_StaticInit
+		 */
+		PALDevDataSet(Dev, PalState, VL53L0_STATE_WAIT_STATICINIT);
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		VL53L0_SETDEVICESPECIFICPARAMETER(Dev, RefSpadsInitialised, 0);
+
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetTuningSettingBuffer(VL53L0_DEV Dev,
+	uint8_t *pTuningSettingBuffer, uint8_t UseInternalTuningSettings)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	if (UseInternalTuningSettings == 1) {
+		/* Force use internal settings */
+		PALDevDataSet(Dev, UseInternalTuningSettings, 1);
+	} else {
+
+		/* check that the first byte is not 0 */
+		if (*pTuningSettingBuffer != 0) {
+			PALDevDataSet(Dev, pTuningSettingsPointer,
+				pTuningSettingBuffer);
+			PALDevDataSet(Dev, UseInternalTuningSettings, 0);
+
+		} else {
+			Status = VL53L0_ERROR_INVALID_PARAMS;
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetTuningSettingBuffer(VL53L0_DEV Dev,
+	uint8_t **ppTuningSettingBuffer, uint8_t *pUseInternalTuningSettings)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*ppTuningSettingBuffer = PALDevDataGet(Dev, pTuningSettingsPointer);
+	*pUseInternalTuningSettings = PALDevDataGet(Dev,
+		UseInternalTuningSettings);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_StaticInit(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceParameters_t CurrentParameters = {0};
+	uint8_t *pTuningSettingBuffer;
+	uint16_t tempword = 0;
+	uint8_t tempbyte = 0;
+	uint8_t UseInternalTuningSettings = 0;
+	uint32_t count = 0;
+	uint8_t isApertureSpads = 0;
+	uint32_t refSpadCount = 0;
+	uint8_t ApertureSpads = 0;
+	uint8_t vcselPulsePeriodPCLK;
+	FixPoint1616_t seqTimeoutMilliSecs;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_info_from_device(Dev, 1);
+
+	/* set the ref spad from NVM */
+	count	= (uint32_t)VL53L0_GETDEVICESPECIFICPARAMETER(Dev,
+		ReferenceSpadCount);
+	ApertureSpads = VL53L0_GETDEVICESPECIFICPARAMETER(Dev,
+		ReferenceSpadType);
+
+	/* NVM value invalid */
+	if ((ApertureSpads > 1) ||
+		((ApertureSpads == 1) && (count > 32)) ||
+		((ApertureSpads == 0) && (count > 12)))
+		Status = VL53L0_perform_ref_spad_management(Dev, &refSpadCount,
+			&isApertureSpads);
+	else
+		Status = VL53L0_set_reference_spads(Dev, count, ApertureSpads);
+
+
+	/* Initialize tuning settings buffer to prevent compiler warning. */
+	pTuningSettingBuffer = DefaultTuningSettings;
+
+	if (Status == VL53L0_ERROR_NONE) {
+		UseInternalTuningSettings = PALDevDataGet(Dev,
+			UseInternalTuningSettings);
+
+		if (UseInternalTuningSettings == 0)
+			pTuningSettingBuffer = PALDevDataGet(Dev,
+				pTuningSettingsPointer);
+		else
+			pTuningSettingBuffer = DefaultTuningSettings;
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_load_tuning_settings(Dev, pTuningSettingBuffer);
+
+
+	/* Set interrupt config to new sample ready */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_SetGpioConfig(Dev, 0, 0,
+		VL53L0_REG_SYSTEM_INTERRUPT_GPIO_NEW_SAMPLE_READY,
+		VL53L0_INTERRUPTPOLARITY_LOW);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+		Status |= VL53L0_RdWord(Dev, 0x84, &tempword);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_SETDEVICESPECIFICPARAMETER(Dev, OscFrequencyMHz,
+			VL53L0_FIXPOINT412TOFIXPOINT1616(tempword));
+	}
+
+	/* After static init, some device parameters may be changed,
+	 * so update them
+	 */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_GetDeviceParameters(Dev, &CurrentParameters);
+
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_GetFractionEnable(Dev, &tempbyte);
+		if (Status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, RangeFractionalEnable, tempbyte);
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		PALDevDataSet(Dev, CurrentParameters, CurrentParameters);
+
+
+	/* read the sequence config and save it */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdByte(Dev,
+		VL53L0_REG_SYSTEM_SEQUENCE_CONFIG, &tempbyte);
+		if (Status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, SequenceConfig, tempbyte);
+
+	}
+
+	/* Disable MSRC and TCC by default */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetSequenceStepEnable(Dev,
+					VL53L0_SEQUENCESTEP_TCC, 0);
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetSequenceStepEnable(Dev,
+		VL53L0_SEQUENCESTEP_MSRC, 0);
+
+
+	/* Set PAL State to standby */
+	if (Status == VL53L0_ERROR_NONE)
+		PALDevDataSet(Dev, PalState, VL53L0_STATE_IDLE);
+
+
+
+	/* Store pre-range vcsel period */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_GetVcselPulsePeriod(
+			Dev,
+			VL53L0_VCSEL_PERIOD_PRE_RANGE,
+			&vcselPulsePeriodPCLK);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_SETDEVICESPECIFICPARAMETER(
+			Dev,
+			PreRangeVcselPulsePeriod,
+			vcselPulsePeriodPCLK);
+	}
+
+	/* Store final-range vcsel period */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_GetVcselPulsePeriod(
+			Dev,
+			VL53L0_VCSEL_PERIOD_FINAL_RANGE,
+			&vcselPulsePeriodPCLK);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_SETDEVICESPECIFICPARAMETER(
+			Dev,
+			FinalRangeVcselPulsePeriod,
+			vcselPulsePeriodPCLK);
+	}
+
+	/* Store pre-range timeout */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_GetSequenceStepTimeout(
+			Dev,
+			VL53L0_SEQUENCESTEP_PRE_RANGE,
+			&seqTimeoutMilliSecs);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_SETDEVICESPECIFICPARAMETER(
+			Dev,
+			PreRangeTimeoutMicroSecs,
+			seqTimeoutMilliSecs);
+	}
+
+	/* Store final-range timeout */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_GetSequenceStepTimeout(
+			Dev,
+			VL53L0_SEQUENCESTEP_FINAL_RANGE,
+			&seqTimeoutMilliSecs);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_SETDEVICESPECIFICPARAMETER(
+			Dev,
+			FinalRangeTimeoutMicroSecs,
+			seqTimeoutMilliSecs);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_WaitDeviceBooted(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	/* not implemented on VL53L0 */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_ResetDevice(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	/* Set reset bit */
+	Status = VL53L0_WrByte(Dev, VL53L0_REG_SOFT_RESET_GO2_SOFT_RESET_N,
+		0x00);
+
+	/* Wait for some time */
+	if (Status == VL53L0_ERROR_NONE) {
+		do {
+			Status = VL53L0_RdByte(Dev,
+			VL53L0_REG_IDENTIFICATION_MODEL_ID, &Byte);
+		} while (Byte != 0x00);
+	}
+
+	/* Release reset */
+	Status = VL53L0_WrByte(Dev, VL53L0_REG_SOFT_RESET_GO2_SOFT_RESET_N,
+		0x01);
+
+	/* Wait until correct boot-up of the device */
+	if (Status == VL53L0_ERROR_NONE) {
+		do {
+			Status = VL53L0_RdByte(Dev,
+			VL53L0_REG_IDENTIFICATION_MODEL_ID, &Byte);
+		} while (Byte == 0x00);
+	}
+
+	/* Set PAL State to VL53L0_STATE_POWERDOWN */
+	if (Status == VL53L0_ERROR_NONE)
+		PALDevDataSet(Dev, PalState, VL53L0_STATE_POWERDOWN);
+
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+/* End Group PAL Init Functions */
+
+/* Group PAL Parameters Functions */
+VL53L0_Error VL53L0_SetDeviceParameters(VL53L0_DEV Dev,
+	const VL53L0_DeviceParameters_t *pDeviceParameters)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int i;
+
+	LOG_FUNCTION_START("");
+	Status = VL53L0_SetDeviceMode(Dev, pDeviceParameters->DeviceMode);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetHistogramMode(Dev,
+			pDeviceParameters->HistogramMode);
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetInterMeasurementPeriodMilliSeconds(Dev,
+			pDeviceParameters->InterMeasurementPeriodMilliSeconds);
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetXTalkCompensationRateMegaCps(Dev,
+			pDeviceParameters->XTalkCompensationRateMegaCps);
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetOffsetCalibrationDataMicroMeter(Dev,
+			pDeviceParameters->RangeOffsetMicroMeters);
+
+
+	for (i = 0; i < VL53L0_CHECKENABLE_NUMBER_OF_CHECKS; i++) {
+		if (Status == VL53L0_ERROR_NONE)
+			Status |= VL53L0_SetLimitCheckEnable(Dev, i,
+				pDeviceParameters->LimitChecksEnable[i]);
+		else
+			break;
+
+		if (Status == VL53L0_ERROR_NONE)
+			Status |= VL53L0_SetLimitCheckValue(Dev, i,
+				pDeviceParameters->LimitChecksValue[i]);
+		else
+			break;
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetWrapAroundCheckEnable(Dev,
+			pDeviceParameters->WrapAroundCheckEnable);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetMeasurementTimingBudgetMicroSeconds(Dev,
+			pDeviceParameters->MeasurementTimingBudgetMicroSeconds);
+
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetDeviceParameters(VL53L0_DEV Dev,
+	VL53L0_DeviceParameters_t *pDeviceParameters)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int i;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_GetDeviceMode(Dev, &(pDeviceParameters->DeviceMode));
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_GetHistogramMode(Dev,
+			&(pDeviceParameters->HistogramMode));
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_GetInterMeasurementPeriodMilliSeconds(Dev,
+		&(pDeviceParameters->InterMeasurementPeriodMilliSeconds));
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		pDeviceParameters->XTalkCompensationEnable = 0;
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_GetXTalkCompensationRateMegaCps(Dev,
+			&(pDeviceParameters->XTalkCompensationRateMegaCps));
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_GetOffsetCalibrationDataMicroMeter(Dev,
+			&(pDeviceParameters->RangeOffsetMicroMeters));
+
+
+	if (Status == VL53L0_ERROR_NONE) {
+		for (i = 0; i < VL53L0_CHECKENABLE_NUMBER_OF_CHECKS; i++) {
+			/* get first the values, then the enables.
+			 * VL53L0_GetLimitCheckValue will modify the enable
+			 * flags
+			 */
+			if (Status == VL53L0_ERROR_NONE) {
+				Status |= VL53L0_GetLimitCheckValue(Dev, i,
+				&(pDeviceParameters->LimitChecksValue[i]));
+			} else {
+				break;
+			}
+			if (Status == VL53L0_ERROR_NONE) {
+				Status |= VL53L0_GetLimitCheckEnable(Dev, i,
+				&(pDeviceParameters->LimitChecksEnable[i]));
+			} else {
+				break;
+			}
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_GetWrapAroundCheckEnable(Dev,
+			&(pDeviceParameters->WrapAroundCheckEnable));
+	}
+
+	/* Need to be done at the end as it uses VCSELPulsePeriod */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_GetMeasurementTimingBudgetMicroSeconds(Dev,
+		&(pDeviceParameters->MeasurementTimingBudgetMicroSeconds));
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetDeviceMode(VL53L0_DEV Dev, VL53L0_DeviceModes DeviceMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("%d", (int)DeviceMode);
+
+	switch (DeviceMode) {
+	case VL53L0_DEVICEMODE_SINGLE_RANGING:
+	case VL53L0_DEVICEMODE_CONTINUOUS_RANGING:
+	case VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING:
+	case VL53L0_DEVICEMODE_SINGLE_HISTOGRAM:
+	case VL53L0_DEVICEMODE_GPIO_DRIVE:
+	case VL53L0_DEVICEMODE_GPIO_OSC:
+		/* Supported modes */
+		VL53L0_SETPARAMETERFIELD(Dev, DeviceMode, DeviceMode);
+		break;
+	default:
+		/* Unsupported mode */
+		Status = VL53L0_ERROR_MODE_NOT_SUPPORTED;
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetDeviceMode(VL53L0_DEV Dev,
+	VL53L0_DeviceModes *pDeviceMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	VL53L0_GETPARAMETERFIELD(Dev, DeviceMode, *pDeviceMode);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetRangeFractionEnable(VL53L0_DEV Dev,	uint8_t Enable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("%d", (int)Enable);
+
+	Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSTEM_RANGE_CONFIG, Enable);
+
+	if (Status == VL53L0_ERROR_NONE)
+		PALDevDataSet(Dev, RangeFractionalEnable, Enable);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetFractionEnable(VL53L0_DEV Dev, uint8_t *pEnabled)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L0_REG_SYSTEM_RANGE_CONFIG, pEnabled);
+
+	if (Status == VL53L0_ERROR_NONE)
+		*pEnabled = (*pEnabled & 1);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetHistogramMode(VL53L0_DEV Dev,
+	VL53L0_HistogramModes HistogramMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("%d", (int)HistogramMode);
+
+	Status = VL53L0_set_histogram_mode(Dev, HistogramMode);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetHistogramMode(VL53L0_DEV Dev,
+	VL53L0_HistogramModes *pHistogramMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_histogram_mode(Dev, pHistogramMode);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetMeasurementTimingBudgetMicroSeconds(VL53L0_DEV Dev,
+	uint32_t MeasurementTimingBudgetMicroSeconds)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_set_measurement_timing_budget_micro_seconds(Dev,
+		MeasurementTimingBudgetMicroSeconds);
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetMeasurementTimingBudgetMicroSeconds(VL53L0_DEV Dev,
+	uint32_t *pMeasurementTimingBudgetMicroSeconds)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_measurement_timing_budget_micro_seconds(Dev,
+		pMeasurementTimingBudgetMicroSeconds);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetVcselPulsePeriod(VL53L0_DEV Dev,
+	VL53L0_VcselPeriod VcselPeriodType, uint8_t VCSELPulsePeriodPCLK)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_set_vcsel_pulse_period(Dev, VcselPeriodType,
+		VCSELPulsePeriodPCLK);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetVcselPulsePeriod(VL53L0_DEV Dev,
+	VL53L0_VcselPeriod VcselPeriodType, uint8_t *pVCSELPulsePeriodPCLK)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_vcsel_pulse_period(Dev, VcselPeriodType,
+		pVCSELPulsePeriodPCLK);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetSequenceStepEnable(VL53L0_DEV Dev,
+	VL53L0_SequenceStepId SequenceStepId, uint8_t SequenceStepEnabled)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t SequenceConfig = 0;
+	uint8_t SequenceConfigNew = 0;
+	uint32_t MeasurementTimingBudgetMicroSeconds;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG,
+		&SequenceConfig);
+
+	SequenceConfigNew = SequenceConfig;
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (SequenceStepEnabled == 1) {
+
+			/* Enable requested sequence step
+			 */
+			switch (SequenceStepId) {
+			case VL53L0_SEQUENCESTEP_TCC:
+				SequenceConfigNew |= 0x10;
+				break;
+			case VL53L0_SEQUENCESTEP_DSS:
+				SequenceConfigNew |= 0x28;
+				break;
+			case VL53L0_SEQUENCESTEP_MSRC:
+				SequenceConfigNew |= 0x04;
+				break;
+			case VL53L0_SEQUENCESTEP_PRE_RANGE:
+				SequenceConfigNew |= 0x40;
+				break;
+			case VL53L0_SEQUENCESTEP_FINAL_RANGE:
+				SequenceConfigNew |= 0x80;
+				break;
+			default:
+				Status = VL53L0_ERROR_INVALID_PARAMS;
+			}
+		} else {
+			/* Disable requested sequence step
+			 */
+			switch (SequenceStepId) {
+			case VL53L0_SEQUENCESTEP_TCC:
+				SequenceConfigNew &= 0xef;
+				break;
+			case VL53L0_SEQUENCESTEP_DSS:
+				SequenceConfigNew &= 0xd7;
+				break;
+			case VL53L0_SEQUENCESTEP_MSRC:
+				SequenceConfigNew &= 0xfb;
+				break;
+			case VL53L0_SEQUENCESTEP_PRE_RANGE:
+				SequenceConfigNew &= 0xbf;
+				break;
+			case VL53L0_SEQUENCESTEP_FINAL_RANGE:
+				SequenceConfigNew &= 0x7f;
+				break;
+			default:
+				Status = VL53L0_ERROR_INVALID_PARAMS;
+			}
+		}
+	}
+
+	if (SequenceConfigNew != SequenceConfig) {
+		/* Apply New Setting */
+		if (Status == VL53L0_ERROR_NONE) {
+			Status = VL53L0_WrByte(Dev,
+			VL53L0_REG_SYSTEM_SEQUENCE_CONFIG, SequenceConfigNew);
+		}
+		if (Status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, SequenceConfig, SequenceConfigNew);
+
+
+		/* Recalculate timing budget */
+		if (Status == VL53L0_ERROR_NONE) {
+			VL53L0_GETPARAMETERFIELD(Dev,
+				MeasurementTimingBudgetMicroSeconds,
+				MeasurementTimingBudgetMicroSeconds);
+
+			VL53L0_SetMeasurementTimingBudgetMicroSeconds(Dev,
+				MeasurementTimingBudgetMicroSeconds);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+VL53L0_Error sequence_step_enabled(VL53L0_DEV Dev,
+	VL53L0_SequenceStepId SequenceStepId, uint8_t SequenceConfig,
+	uint8_t *pSequenceStepEnabled)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	*pSequenceStepEnabled = 0;
+	LOG_FUNCTION_START("");
+
+	switch (SequenceStepId) {
+	case VL53L0_SEQUENCESTEP_TCC:
+		*pSequenceStepEnabled = (SequenceConfig & 0x10) >> 4;
+		break;
+	case VL53L0_SEQUENCESTEP_DSS:
+		*pSequenceStepEnabled = (SequenceConfig & 0x08) >> 3;
+		break;
+	case VL53L0_SEQUENCESTEP_MSRC:
+		*pSequenceStepEnabled = (SequenceConfig & 0x04) >> 2;
+		break;
+	case VL53L0_SEQUENCESTEP_PRE_RANGE:
+		*pSequenceStepEnabled = (SequenceConfig & 0x40) >> 6;
+		break;
+	case VL53L0_SEQUENCESTEP_FINAL_RANGE:
+		*pSequenceStepEnabled = (SequenceConfig & 0x80) >> 7;
+		break;
+	default:
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetSequenceStepEnable(VL53L0_DEV Dev,
+	VL53L0_SequenceStepId SequenceStepId, uint8_t *pSequenceStepEnabled)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t SequenceConfig = 0;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG,
+		&SequenceConfig);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = sequence_step_enabled(Dev, SequenceStepId,
+			SequenceConfig, pSequenceStepEnabled);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetSequenceStepEnables(VL53L0_DEV Dev,
+	VL53L0_SchedulerSequenceSteps_t *pSchedulerSequenceSteps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t SequenceConfig = 0;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG,
+		&SequenceConfig);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = sequence_step_enabled(Dev,
+		VL53L0_SEQUENCESTEP_TCC, SequenceConfig,
+			&pSchedulerSequenceSteps->TccOn);
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = sequence_step_enabled(Dev,
+		VL53L0_SEQUENCESTEP_DSS, SequenceConfig,
+			&pSchedulerSequenceSteps->DssOn);
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = sequence_step_enabled(Dev,
+		VL53L0_SEQUENCESTEP_MSRC, SequenceConfig,
+			&pSchedulerSequenceSteps->MsrcOn);
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = sequence_step_enabled(Dev,
+		VL53L0_SEQUENCESTEP_PRE_RANGE, SequenceConfig,
+			&pSchedulerSequenceSteps->PreRangeOn);
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = sequence_step_enabled(Dev,
+		VL53L0_SEQUENCESTEP_FINAL_RANGE, SequenceConfig,
+			&pSchedulerSequenceSteps->FinalRangeOn);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetNumberOfSequenceSteps(VL53L0_DEV Dev,
+	uint8_t *pNumberOfSequenceSteps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pNumberOfSequenceSteps = VL53L0_SEQUENCESTEP_NUMBER_OF_CHECKS;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetSequenceStepsInfo(VL53L0_SequenceStepId SequenceStepId,
+	char *pSequenceStepsString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_sequence_steps_info(
+			SequenceStepId,
+			pSequenceStepsString);
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetSequenceStepTimeout(VL53L0_DEV Dev,
+	VL53L0_SequenceStepId SequenceStepId, FixPoint1616_t TimeOutMilliSecs)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_Error Status1 = VL53L0_ERROR_NONE;
+	uint32_t TimeoutMicroSeconds = ((TimeOutMilliSecs * 1000) + 0x8000)
+		>> 16;
+	uint32_t MeasurementTimingBudgetMicroSeconds;
+	FixPoint1616_t OldTimeOutMicroSeconds;
+
+	LOG_FUNCTION_START("");
+
+	/* Read back the current value in case we need to revert back to this.
+	 */
+	Status = get_sequence_step_timeout(Dev, SequenceStepId,
+		&OldTimeOutMicroSeconds);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = set_sequence_step_timeout(Dev, SequenceStepId,
+			TimeoutMicroSeconds);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_GETPARAMETERFIELD(Dev,
+			MeasurementTimingBudgetMicroSeconds,
+			MeasurementTimingBudgetMicroSeconds);
+
+		/* At this point we don't know if the requested value is valid,
+		 * therefore proceed to update the entire timing budget and
+		 * if this fails, revert back to the previous value.
+		 */
+		Status = VL53L0_SetMeasurementTimingBudgetMicroSeconds(Dev,
+			MeasurementTimingBudgetMicroSeconds);
+
+		if (Status != VL53L0_ERROR_NONE) {
+			Status1 = set_sequence_step_timeout(Dev, SequenceStepId,
+				OldTimeOutMicroSeconds);
+
+			if (Status1 == VL53L0_ERROR_NONE) {
+				Status1 =
+				VL53L0_SetMeasurementTimingBudgetMicroSeconds(
+					Dev,
+					MeasurementTimingBudgetMicroSeconds);
+			}
+
+			Status = Status1;
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetSequenceStepTimeout(VL53L0_DEV Dev,
+	VL53L0_SequenceStepId SequenceStepId, FixPoint1616_t *pTimeOutMilliSecs)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint32_t TimeoutMicroSeconds;
+	uint32_t WholeNumber_ms = 0;
+	uint32_t Fraction_ms = 0;
+
+	LOG_FUNCTION_START("");
+
+	Status = get_sequence_step_timeout(Dev, SequenceStepId,
+		&TimeoutMicroSeconds);
+	if (Status == VL53L0_ERROR_NONE) {
+		WholeNumber_ms = TimeoutMicroSeconds / 1000;
+		Fraction_ms = TimeoutMicroSeconds - (WholeNumber_ms * 1000);
+		*pTimeOutMilliSecs = (WholeNumber_ms << 16)
+			+ (((Fraction_ms * 0xffff) + 500) / 1000);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetInterMeasurementPeriodMilliSeconds(VL53L0_DEV Dev,
+	uint32_t InterMeasurementPeriodMilliSeconds)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t osc_calibrate_val;
+	uint32_t IMPeriodMilliSeconds;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdWord(Dev, VL53L0_REG_OSC_CALIBRATE_VAL,
+		&osc_calibrate_val);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (osc_calibrate_val != 0) {
+			IMPeriodMilliSeconds =
+				InterMeasurementPeriodMilliSeconds
+					* osc_calibrate_val;
+		} else {
+			IMPeriodMilliSeconds =
+				InterMeasurementPeriodMilliSeconds;
+		}
+		Status = VL53L0_WrDWord(Dev,
+		VL53L0_REG_SYSTEM_INTERMEASUREMENT_PERIOD,
+			IMPeriodMilliSeconds);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_SETPARAMETERFIELD(Dev,
+			InterMeasurementPeriodMilliSeconds,
+			InterMeasurementPeriodMilliSeconds);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetInterMeasurementPeriodMilliSeconds(VL53L0_DEV Dev,
+	uint32_t *pInterMeasurementPeriodMilliSeconds)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t osc_calibrate_val;
+	uint32_t IMPeriodMilliSeconds;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdWord(Dev, VL53L0_REG_OSC_CALIBRATE_VAL,
+		&osc_calibrate_val);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdDWord(Dev,
+		VL53L0_REG_SYSTEM_INTERMEASUREMENT_PERIOD,
+			&IMPeriodMilliSeconds);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (osc_calibrate_val != 0) {
+			*pInterMeasurementPeriodMilliSeconds =
+				IMPeriodMilliSeconds / osc_calibrate_val;
+		}
+		VL53L0_SETPARAMETERFIELD(Dev,
+			InterMeasurementPeriodMilliSeconds,
+			*pInterMeasurementPeriodMilliSeconds);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetXTalkCompensationEnable(VL53L0_DEV Dev,
+	uint8_t XTalkCompensationEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	FixPoint1616_t TempFix1616;
+	uint16_t LinearityCorrectiveGain;
+
+	LOG_FUNCTION_START("");
+
+	LinearityCorrectiveGain = PALDevDataGet(Dev, LinearityCorrectiveGain);
+
+	if ((XTalkCompensationEnable == 0)
+		|| (LinearityCorrectiveGain != 1000)) {
+		TempFix1616 = 0;
+	} else {
+		VL53L0_GETPARAMETERFIELD(Dev, XTalkCompensationRateMegaCps,
+			TempFix1616);
+	}
+
+	/* the following register has a format 3.13 */
+	Status = VL53L0_WrWord(Dev,
+	VL53L0_REG_CROSSTALK_COMPENSATION_PEAK_RATE_MCPS,
+		VL53L0_FIXPOINT1616TOFIXPOINT313(TempFix1616));
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (XTalkCompensationEnable == 0) {
+			VL53L0_SETPARAMETERFIELD(Dev, XTalkCompensationEnable,
+				0);
+		} else {
+			VL53L0_SETPARAMETERFIELD(Dev, XTalkCompensationEnable,
+				1);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetXTalkCompensationEnable(VL53L0_DEV Dev,
+	uint8_t *pXTalkCompensationEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Temp8;
+
+	LOG_FUNCTION_START("");
+
+	VL53L0_GETPARAMETERFIELD(Dev, XTalkCompensationEnable, Temp8);
+	*pXTalkCompensationEnable = Temp8;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetXTalkCompensationRateMegaCps(VL53L0_DEV Dev,
+	FixPoint1616_t XTalkCompensationRateMegaCps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Temp8;
+	uint16_t LinearityCorrectiveGain;
+	uint16_t data;
+
+	LOG_FUNCTION_START("");
+
+	VL53L0_GETPARAMETERFIELD(Dev, XTalkCompensationEnable, Temp8);
+	LinearityCorrectiveGain = PALDevDataGet(Dev, LinearityCorrectiveGain);
+
+	if (Temp8 == 0) { /* disabled write only internal value */
+		VL53L0_SETPARAMETERFIELD(Dev, XTalkCompensationRateMegaCps,
+			XTalkCompensationRateMegaCps);
+	} else {
+		/* the following register has a format 3.13 */
+		if (LinearityCorrectiveGain == 1000) {
+			data = VL53L0_FIXPOINT1616TOFIXPOINT313(
+				XTalkCompensationRateMegaCps);
+		} else {
+			data = 0;
+		}
+
+		Status = VL53L0_WrWord(Dev,
+		VL53L0_REG_CROSSTALK_COMPENSATION_PEAK_RATE_MCPS, data);
+
+		if (Status == VL53L0_ERROR_NONE) {
+			VL53L0_SETPARAMETERFIELD(Dev,
+				XTalkCompensationRateMegaCps,
+				XTalkCompensationRateMegaCps);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetXTalkCompensationRateMegaCps(VL53L0_DEV Dev,
+	FixPoint1616_t *pXTalkCompensationRateMegaCps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t Value;
+	FixPoint1616_t TempFix1616;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdWord(Dev,
+	VL53L0_REG_CROSSTALK_COMPENSATION_PEAK_RATE_MCPS, (uint16_t *)&Value);
+	if (Status == VL53L0_ERROR_NONE) {
+		if (Value == 0) {
+			/* the Xtalk is disabled return value from memory */
+			VL53L0_GETPARAMETERFIELD(Dev,
+				XTalkCompensationRateMegaCps, TempFix1616);
+			*pXTalkCompensationRateMegaCps = TempFix1616;
+			VL53L0_SETPARAMETERFIELD(Dev, XTalkCompensationEnable,
+				0);
+		} else {
+			TempFix1616 = VL53L0_FIXPOINT313TOFIXPOINT1616(Value);
+			*pXTalkCompensationRateMegaCps = TempFix1616;
+			VL53L0_SETPARAMETERFIELD(Dev,
+				XTalkCompensationRateMegaCps, TempFix1616);
+			VL53L0_SETPARAMETERFIELD(Dev, XTalkCompensationEnable,
+				1);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetRefCalibration(VL53L0_DEV Dev, uint8_t VhvSettings,
+	uint8_t PhaseCal)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_set_ref_calibration(Dev, VhvSettings, PhaseCal);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetRefCalibration(VL53L0_DEV Dev, uint8_t *pVhvSettings,
+	uint8_t *pPhaseCal)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_ref_calibration(Dev, pVhvSettings, pPhaseCal);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/*
+ * CHECK LIMIT FUNCTIONS
+ */
+
+VL53L0_Error VL53L0_GetNumberOfLimitCheck(uint16_t *pNumberOfLimitCheck)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pNumberOfLimitCheck = VL53L0_CHECKENABLE_NUMBER_OF_CHECKS;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetLimitCheckInfo(VL53L0_DEV Dev, uint16_t LimitCheckId,
+	char *pLimitCheckString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_limit_check_info(Dev, LimitCheckId,
+		pLimitCheckString);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetLimitCheckStatus(VL53L0_DEV Dev, uint16_t LimitCheckId,
+	uint8_t *pLimitCheckStatus)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Temp8;
+
+	LOG_FUNCTION_START("");
+
+	if (LimitCheckId >= VL53L0_CHECKENABLE_NUMBER_OF_CHECKS) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	} else {
+
+		VL53L0_GETARRAYPARAMETERFIELD(Dev, LimitChecksStatus,
+			LimitCheckId, Temp8);
+
+		*pLimitCheckStatus = Temp8;
+
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetLimitCheckEnable(VL53L0_DEV Dev, uint16_t LimitCheckId,
+	uint8_t LimitCheckEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	FixPoint1616_t TempFix1616 = 0;
+	uint8_t LimitCheckEnableInt = 0;
+	uint8_t LimitCheckDisable = 0;
+	uint8_t Temp8;
+
+	LOG_FUNCTION_START("");
+
+	if (LimitCheckId >= VL53L0_CHECKENABLE_NUMBER_OF_CHECKS) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	} else {
+		if (LimitCheckEnable == 0) {
+			TempFix1616 = 0;
+			LimitCheckEnableInt = 0;
+			LimitCheckDisable = 1;
+
+		} else {
+			VL53L0_GETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+				LimitCheckId, TempFix1616);
+			LimitCheckDisable = 0;
+			/* this to be sure to have either 0 or 1 */
+			LimitCheckEnableInt = 1;
+		}
+
+		switch (LimitCheckId) {
+
+		case VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE:
+			/* internal computation: */
+			VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksEnable,
+				VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE,
+				LimitCheckEnableInt);
+
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE:
+
+			Status = VL53L0_WrWord(Dev,
+			VL53L0_REG_FINAL_RANGE_CONFIG_MIN_COUNT_RATE_RTN_LIMIT,
+				VL53L0_FIXPOINT1616TOFIXPOINT97(TempFix1616));
+
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_REF_CLIP:
+
+			/* internal computation: */
+			VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksEnable,
+				VL53L0_CHECKENABLE_SIGNAL_REF_CLIP,
+				LimitCheckEnableInt);
+
+			break;
+
+		case VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD:
+
+			/* internal computation: */
+			VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksEnable,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				LimitCheckEnableInt);
+
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_RATE_MSRC:
+
+			Temp8 = (uint8_t)(LimitCheckDisable << 1);
+			Status = VL53L0_UpdateByte(Dev,
+				VL53L0_REG_MSRC_CONFIG_CONTROL,
+				0xFE, Temp8);
+
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_RATE_PRE_RANGE:
+
+			Temp8 = (uint8_t)(LimitCheckDisable << 4);
+			Status = VL53L0_UpdateByte(Dev,
+				VL53L0_REG_MSRC_CONFIG_CONTROL,
+				0xEF, Temp8);
+
+			break;
+
+
+		default:
+			Status = VL53L0_ERROR_INVALID_PARAMS;
+
+		}
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (LimitCheckEnable == 0) {
+			VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksEnable,
+				LimitCheckId, 0);
+		} else {
+			VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksEnable,
+				LimitCheckId, 1);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetLimitCheckEnable(VL53L0_DEV Dev, uint16_t LimitCheckId,
+	uint8_t *pLimitCheckEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Temp8;
+
+	LOG_FUNCTION_START("");
+
+	if (LimitCheckId >= VL53L0_CHECKENABLE_NUMBER_OF_CHECKS) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+		*pLimitCheckEnable = 0;
+	} else {
+		VL53L0_GETARRAYPARAMETERFIELD(Dev, LimitChecksEnable,
+			LimitCheckId, Temp8);
+		*pLimitCheckEnable = Temp8;
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetLimitCheckValue(VL53L0_DEV Dev, uint16_t LimitCheckId,
+	FixPoint1616_t LimitCheckValue)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Temp8;
+
+	LOG_FUNCTION_START("");
+
+	VL53L0_GETARRAYPARAMETERFIELD(Dev, LimitChecksEnable, LimitCheckId,
+		Temp8);
+
+	if (Temp8 == 0) { /* disabled write only internal value */
+		VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+			LimitCheckId, LimitCheckValue);
+	} else {
+
+		switch (LimitCheckId) {
+
+		case VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE:
+			/* internal computation: */
+			VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+				VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE,
+				LimitCheckValue);
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE:
+
+			Status = VL53L0_WrWord(Dev,
+			VL53L0_REG_FINAL_RANGE_CONFIG_MIN_COUNT_RATE_RTN_LIMIT,
+				VL53L0_FIXPOINT1616TOFIXPOINT97(
+					LimitCheckValue));
+
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_REF_CLIP:
+
+			/* internal computation: */
+			VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+				VL53L0_CHECKENABLE_SIGNAL_REF_CLIP,
+				LimitCheckValue);
+
+			break;
+
+		case VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD:
+
+			/* internal computation: */
+			VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				LimitCheckValue);
+
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_RATE_MSRC:
+		case VL53L0_CHECKENABLE_SIGNAL_RATE_PRE_RANGE:
+
+			Status = VL53L0_WrWord(Dev,
+				VL53L0_REG_PRE_RANGE_MIN_COUNT_RATE_RTN_LIMIT,
+				VL53L0_FIXPOINT1616TOFIXPOINT97(
+					LimitCheckValue));
+
+			break;
+
+		default:
+			Status = VL53L0_ERROR_INVALID_PARAMS;
+
+		}
+
+		if (Status == VL53L0_ERROR_NONE) {
+			VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+				LimitCheckId, LimitCheckValue);
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetLimitCheckValue(VL53L0_DEV Dev, uint16_t LimitCheckId,
+	FixPoint1616_t *pLimitCheckValue)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t EnableZeroValue = 0;
+	uint16_t Temp16;
+	FixPoint1616_t TempFix1616;
+
+	LOG_FUNCTION_START("");
+
+	switch (LimitCheckId) {
+
+	case VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE:
+		/* internal computation: */
+		VL53L0_GETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+			VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE, TempFix1616);
+		EnableZeroValue = 0;
+		break;
+
+	case VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE:
+		Status = VL53L0_RdWord(Dev,
+		VL53L0_REG_FINAL_RANGE_CONFIG_MIN_COUNT_RATE_RTN_LIMIT,
+			&Temp16);
+		if (Status == VL53L0_ERROR_NONE)
+			TempFix1616 = VL53L0_FIXPOINT97TOFIXPOINT1616(Temp16);
+
+
+		EnableZeroValue = 1;
+		break;
+
+	case VL53L0_CHECKENABLE_SIGNAL_REF_CLIP:
+		/* internal computation: */
+		VL53L0_GETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+			VL53L0_CHECKENABLE_SIGNAL_REF_CLIP, TempFix1616);
+		EnableZeroValue = 0;
+		break;
+
+	case VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD:
+		/* internal computation: */
+		VL53L0_GETARRAYPARAMETERFIELD(Dev, LimitChecksValue,
+			VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD, TempFix1616);
+		EnableZeroValue = 0;
+		break;
+
+	case VL53L0_CHECKENABLE_SIGNAL_RATE_MSRC:
+	case VL53L0_CHECKENABLE_SIGNAL_RATE_PRE_RANGE:
+		Status = VL53L0_RdWord(Dev,
+			VL53L0_REG_PRE_RANGE_MIN_COUNT_RATE_RTN_LIMIT,
+			&Temp16);
+		if (Status == VL53L0_ERROR_NONE)
+			TempFix1616 = VL53L0_FIXPOINT97TOFIXPOINT1616(Temp16);
+
+
+		EnableZeroValue = 0;
+		break;
+
+	default:
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+
+		if (EnableZeroValue == 1) {
+
+			if (TempFix1616 == 0) {
+				/* disabled: return value from memory */
+				VL53L0_GETARRAYPARAMETERFIELD(Dev,
+					LimitChecksValue, LimitCheckId,
+					TempFix1616);
+				*pLimitCheckValue = TempFix1616;
+				VL53L0_SETARRAYPARAMETERFIELD(Dev,
+					LimitChecksEnable, LimitCheckId, 0);
+			} else {
+				*pLimitCheckValue = TempFix1616;
+				VL53L0_SETARRAYPARAMETERFIELD(Dev,
+					LimitChecksValue, LimitCheckId,
+					TempFix1616);
+				VL53L0_SETARRAYPARAMETERFIELD(Dev,
+					LimitChecksEnable, LimitCheckId, 1);
+			}
+		} else {
+			*pLimitCheckValue = TempFix1616;
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
+
+VL53L0_Error VL53L0_GetLimitCheckCurrent(VL53L0_DEV Dev, uint16_t LimitCheckId,
+	FixPoint1616_t *pLimitCheckCurrent)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_RangingMeasurementData_t LastRangeDataBuffer;
+
+	LOG_FUNCTION_START("");
+
+	if (LimitCheckId >= VL53L0_CHECKENABLE_NUMBER_OF_CHECKS) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	} else {
+		switch (LimitCheckId) {
+		case VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE:
+			/* Need to run a ranging to have the latest values */
+			*pLimitCheckCurrent = PALDevDataGet(Dev, SigmaEstimate);
+
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE:
+			/* Need to run a ranging to have the latest values */
+			LastRangeDataBuffer = PALDevDataGet(Dev,
+				LastRangeMeasure);
+			*pLimitCheckCurrent =
+				LastRangeDataBuffer.SignalRateRtnMegaCps;
+
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_REF_CLIP:
+			/* Need to run a ranging to have the latest values */
+			*pLimitCheckCurrent = PALDevDataGet(Dev,
+				LastSignalRefMcps);
+
+			break;
+
+		case VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD:
+			/* Need to run a ranging to have the latest values */
+			LastRangeDataBuffer = PALDevDataGet(Dev,
+				LastRangeMeasure);
+			*pLimitCheckCurrent =
+				LastRangeDataBuffer.SignalRateRtnMegaCps;
+
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_RATE_MSRC:
+			/* Need to run a ranging to have the latest values */
+			LastRangeDataBuffer = PALDevDataGet(Dev,
+				LastRangeMeasure);
+			*pLimitCheckCurrent =
+				LastRangeDataBuffer.SignalRateRtnMegaCps;
+
+			break;
+
+		case VL53L0_CHECKENABLE_SIGNAL_RATE_PRE_RANGE:
+			/* Need to run a ranging to have the latest values */
+			LastRangeDataBuffer = PALDevDataGet(Dev,
+				LastRangeMeasure);
+			*pLimitCheckCurrent =
+				LastRangeDataBuffer.SignalRateRtnMegaCps;
+
+			break;
+
+		default:
+			Status = VL53L0_ERROR_INVALID_PARAMS;
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
+
+/*
+ * WRAPAROUND Check
+ */
+VL53L0_Error VL53L0_SetWrapAroundCheckEnable(VL53L0_DEV Dev,
+	uint8_t WrapAroundCheckEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+	uint8_t WrapAroundCheckEnableInt;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG, &Byte);
+	if (WrapAroundCheckEnable == 0) {
+		/* Disable wraparound */
+		Byte = Byte & 0x7F;
+		WrapAroundCheckEnableInt = 0;
+	} else {
+		/*Enable wraparound */
+		Byte = Byte | 0x80;
+		WrapAroundCheckEnableInt = 1;
+	}
+
+	Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG, Byte);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		PALDevDataSet(Dev, SequenceConfig, Byte);
+		VL53L0_SETPARAMETERFIELD(Dev, WrapAroundCheckEnable,
+			WrapAroundCheckEnableInt);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetWrapAroundCheckEnable(VL53L0_DEV Dev,
+	uint8_t *pWrapAroundCheckEnable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t data;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG, &data);
+	if (Status == VL53L0_ERROR_NONE) {
+		PALDevDataSet(Dev, SequenceConfig, data);
+		if (data & (0x01 << 7))
+			*pWrapAroundCheckEnable = 0x01;
+		else
+			*pWrapAroundCheckEnable = 0x00;
+	}
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_SETPARAMETERFIELD(Dev, WrapAroundCheckEnable,
+			*pWrapAroundCheckEnable);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetDmaxCalParameters(VL53L0_DEV Dev,
+	uint16_t RangeMilliMeter, FixPoint1616_t SignalRateRtnMegaCps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	FixPoint1616_t SignalRateRtnMegaCpsTemp = 0;
+
+	LOG_FUNCTION_START("");
+
+	/* Check if one of input parameter is zero, in that case the
+	 * value are get from NVM
+	 */
+	if ((RangeMilliMeter == 0) || (SignalRateRtnMegaCps == 0)) {
+		/* NVM parameters */
+		/* Run VL53L0_get_info_from_device wit option 4 to get
+		 * signal rate at 400 mm if the value have been already
+		 * get this function will return with no access to device
+		 */
+		VL53L0_get_info_from_device(Dev, 4);
+
+		SignalRateRtnMegaCpsTemp = VL53L0_GETDEVICESPECIFICPARAMETER(
+			Dev, SignalRateMeasFixed400mm);
+
+		PALDevDataSet(Dev, DmaxCalRangeMilliMeter, 400);
+		PALDevDataSet(Dev, DmaxCalSignalRateRtnMegaCps,
+			SignalRateRtnMegaCpsTemp);
+	} else {
+		/* User parameters */
+		PALDevDataSet(Dev, DmaxCalRangeMilliMeter, RangeMilliMeter);
+		PALDevDataSet(Dev, DmaxCalSignalRateRtnMegaCps,
+			SignalRateRtnMegaCps);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetDmaxCalParameters(VL53L0_DEV Dev,
+	uint16_t *pRangeMilliMeter, FixPoint1616_t *pSignalRateRtnMegaCps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pRangeMilliMeter = PALDevDataGet(Dev, DmaxCalRangeMilliMeter);
+	*pSignalRateRtnMegaCps = PALDevDataGet(Dev,
+		DmaxCalSignalRateRtnMegaCps);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* End Group PAL Parameters Functions */
+
+/* Group PAL Measurement Functions */
+VL53L0_Error VL53L0_PerformSingleMeasurement(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceModes DeviceMode;
+
+	LOG_FUNCTION_START("");
+
+	/* Get Current DeviceMode */
+	Status = VL53L0_GetDeviceMode(Dev, &DeviceMode);
+
+	/* Start immediately to run a single ranging measurement in case of
+	 * single ranging or single histogram
+	 */
+	if (Status == VL53L0_ERROR_NONE
+		&& DeviceMode == VL53L0_DEVICEMODE_SINGLE_RANGING)
+		Status = VL53L0_StartMeasurement(Dev);
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_measurement_poll_for_completion(Dev);
+
+
+	/* Change PAL State in case of single ranging or single histogram */
+	if (Status == VL53L0_ERROR_NONE
+		&& DeviceMode == VL53L0_DEVICEMODE_SINGLE_RANGING)
+		PALDevDataSet(Dev, PalState, VL53L0_STATE_IDLE);
+
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_PerformSingleHistogramMeasurement(VL53L0_DEV Dev,
+	VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_perform_single_histogram_measurement(Dev,
+		pHistogramMeasurementData);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_PerformRefCalibration(VL53L0_DEV Dev, uint8_t *pVhvSettings,
+	uint8_t *pPhaseCal)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_perform_ref_calibration(Dev, pVhvSettings,
+		pPhaseCal, 1);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_PerformXTalkMeasurement(VL53L0_DEV Dev,
+	uint32_t TimeoutMs, FixPoint1616_t *pXtalkPerSpad,
+	uint8_t *pAmbientTooHigh)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_perform_xtalk_measurement(Dev, TimeoutMs,
+		pXtalkPerSpad, pAmbientTooHigh);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_PerformXTalkCalibration(VL53L0_DEV Dev,
+	FixPoint1616_t XTalkCalDistance,
+	FixPoint1616_t *pXTalkCompensationRateMegaCps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_perform_xtalk_calibration(Dev, XTalkCalDistance,
+		pXTalkCompensationRateMegaCps);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_PerformOffsetCalibration(VL53L0_DEV Dev,
+	FixPoint1616_t CalDistanceMilliMeter, int32_t *pOffsetMicroMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_perform_offset_calibration(Dev, CalDistanceMilliMeter,
+		pOffsetMicroMeter);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_CheckAndLoadInterruptSettings(VL53L0_DEV Dev,
+	uint8_t StartNotStopFlag)
+{
+	uint8_t InterruptConfig;
+	FixPoint1616_t ThresholdLow;
+	FixPoint1616_t ThresholdHigh;
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	InterruptConfig = VL53L0_GETDEVICESPECIFICPARAMETER(Dev,
+		Pin0GpioFunctionality);
+
+	if ((InterruptConfig ==
+		VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW) ||
+		(InterruptConfig ==
+		VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH) ||
+		(InterruptConfig ==
+		VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT)) {
+
+		Status = VL53L0_GetInterruptThresholds(Dev,
+			VL53L0_DEVICEMODE_CONTINUOUS_RANGING,
+			&ThresholdLow, &ThresholdHigh);
+
+		if (((ThresholdLow > 255*65536) ||
+			(ThresholdHigh > 255*65536)) &&
+			(Status == VL53L0_ERROR_NONE)) {
+
+			if (StartNotStopFlag != 0) {
+				Status = VL53L0_load_tuning_settings(Dev,
+					InterruptThresholdSettings);
+			} else {
+				Status |= VL53L0_WrByte(Dev, 0xFF, 0x04);
+				Status |= VL53L0_WrByte(Dev, 0x70, 0x00);
+				Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+				Status |= VL53L0_WrByte(Dev, 0x80, 0x00);
+			}
+
+		}
+
+
+	}
+
+	return Status;
+
+}
+
+
+VL53L0_Error VL53L0_StartMeasurement(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceModes DeviceMode;
+	uint8_t Byte;
+	uint8_t StartStopByte = VL53L0_REG_SYSRANGE_MODE_START_STOP;
+	uint32_t LoopNb;
+
+	LOG_FUNCTION_START("");
+
+	/* Get Current DeviceMode */
+	VL53L0_GetDeviceMode(Dev, &DeviceMode);
+
+	Status = VL53L0_WrByte(Dev, 0x80, 0x01);
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status = VL53L0_WrByte(Dev, 0x00, 0x00);
+	Status = VL53L0_WrByte(Dev, 0x91, PALDevDataGet(Dev, StopVariable));
+	Status = VL53L0_WrByte(Dev, 0x00, 0x01);
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x00);
+	Status = VL53L0_WrByte(Dev, 0x80, 0x00);
+
+	switch (DeviceMode) {
+	case VL53L0_DEVICEMODE_SINGLE_RANGING:
+		Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSRANGE_START, 0x01);
+
+		Byte = StartStopByte;
+		if (Status == VL53L0_ERROR_NONE) {
+			/* Wait until start bit has been cleared */
+			LoopNb = 0;
+			do {
+				if (LoopNb > 0)
+					Status = VL53L0_RdByte(Dev,
+					VL53L0_REG_SYSRANGE_START, &Byte);
+				LoopNb = LoopNb + 1;
+			} while (((Byte & StartStopByte) == StartStopByte)
+				&& (Status == VL53L0_ERROR_NONE)
+				&& (LoopNb < VL53L0_DEFAULT_MAX_LOOP));
+
+			if (LoopNb >= VL53L0_DEFAULT_MAX_LOOP)
+				Status = VL53L0_ERROR_TIME_OUT;
+
+		}
+
+		break;
+	case VL53L0_DEVICEMODE_CONTINUOUS_RANGING:
+		/* Back-to-back mode */
+
+		/* Check if need to apply interrupt settings */
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L0_CheckAndLoadInterruptSettings(Dev, 1);
+
+		Status = VL53L0_WrByte(Dev,
+		VL53L0_REG_SYSRANGE_START,
+		VL53L0_REG_SYSRANGE_MODE_BACKTOBACK);
+		if (Status == VL53L0_ERROR_NONE) {
+			/* Set PAL State to Running */
+			PALDevDataSet(Dev, PalState, VL53L0_STATE_RUNNING);
+		}
+		break;
+	case VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING:
+		/* Continuous mode */
+		/* Check if need to apply interrupt settings */
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L0_CheckAndLoadInterruptSettings(Dev, 1);
+
+		Status = VL53L0_WrByte(Dev,
+		VL53L0_REG_SYSRANGE_START,
+		VL53L0_REG_SYSRANGE_MODE_TIMED);
+
+		if (Status == VL53L0_ERROR_NONE) {
+			/* Set PAL State to Running */
+			PALDevDataSet(Dev, PalState, VL53L0_STATE_RUNNING);
+		}
+		break;
+	default:
+		/* Selected mode not supported */
+		Status = VL53L0_ERROR_MODE_NOT_SUPPORTED;
+	}
+
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_StopMeasurement(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSRANGE_START,
+	VL53L0_REG_SYSRANGE_MODE_SINGLESHOT);
+
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status = VL53L0_WrByte(Dev, 0x00, 0x00);
+	Status = VL53L0_WrByte(Dev, 0x91, 0x00);
+	Status = VL53L0_WrByte(Dev, 0x00, 0x01);
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* Set PAL State to Idle */
+		PALDevDataSet(Dev, PalState, VL53L0_STATE_IDLE);
+	}
+
+	/* Check if need to apply interrupt settings */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_CheckAndLoadInterruptSettings(Dev, 0);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetMeasurementDataReady(VL53L0_DEV Dev,
+	uint8_t *pMeasurementDataReady)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t SysRangeStatusRegister;
+	uint8_t InterruptConfig;
+	uint32_t InterruptMask;
+
+	LOG_FUNCTION_START("");
+
+	InterruptConfig = VL53L0_GETDEVICESPECIFICPARAMETER(Dev,
+		Pin0GpioFunctionality);
+
+	if (InterruptConfig ==
+		VL53L0_REG_SYSTEM_INTERRUPT_GPIO_NEW_SAMPLE_READY) {
+		Status = VL53L0_GetInterruptMaskStatus(Dev, &InterruptMask);
+		if (InterruptMask ==
+		VL53L0_REG_SYSTEM_INTERRUPT_GPIO_NEW_SAMPLE_READY)
+			*pMeasurementDataReady = 1;
+		else
+			*pMeasurementDataReady = 0;
+	} else {
+		Status = VL53L0_RdByte(Dev, VL53L0_REG_RESULT_RANGE_STATUS,
+			&SysRangeStatusRegister);
+		if (Status == VL53L0_ERROR_NONE) {
+			if (SysRangeStatusRegister & 0x01)
+				*pMeasurementDataReady = 1;
+			else
+				*pMeasurementDataReady = 0;
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_WaitDeviceReadyForNewMeasurement(VL53L0_DEV Dev,
+	uint32_t MaxLoop)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	/* not implemented for VL53L0 */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_GetRangingMeasurementData(VL53L0_DEV Dev,
+	VL53L0_RangingMeasurementData_t *pRangingMeasurementData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t DeviceRangeStatus;
+	uint8_t RangeFractionalEnable;
+	uint8_t PalRangeStatus;
+	uint8_t XTalkCompensationEnable;
+	uint16_t AmbientRate;
+	FixPoint1616_t SignalRate;
+	uint16_t XTalkCompensationRateMegaCps;
+	uint16_t EffectiveSpadRtnCount;
+	uint16_t tmpuint16;
+	uint16_t XtalkRangeMilliMeter;
+	uint16_t LinearityCorrectiveGain;
+	uint8_t localBuffer[12];
+	VL53L0_RangingMeasurementData_t LastRangeDataBuffer;
+
+	LOG_FUNCTION_START("");
+
+	/*
+	 * use multi read even if some registers are not useful, result will
+	 * be more efficient
+	 * start reading at 0x14 dec20
+	 * end reading at 0x21 dec33 total 14 bytes to read
+	 */
+	Status = VL53L0_ReadMulti(Dev, 0x14, localBuffer, 12);
+
+	if (Status == VL53L0_ERROR_NONE) {
+
+		pRangingMeasurementData->ZoneId = 0; /* Only one zone */
+		pRangingMeasurementData->TimeStamp = 0; /* Not Implemented */
+
+		tmpuint16 = VL53L0_MAKEUINT16(localBuffer[11], localBuffer[10]);
+		/* cut1.1 if SYSTEM__RANGE_CONFIG if 1 range is 2bits fractional
+		 *(format 11.2) else no fractional
+		 */
+
+		pRangingMeasurementData->MeasurementTimeUsec = 0;
+
+		SignalRate = VL53L0_FIXPOINT97TOFIXPOINT1616(
+			VL53L0_MAKEUINT16(localBuffer[7], localBuffer[6]));
+		/* peak_signal_count_rate_rtn_mcps */
+		pRangingMeasurementData->SignalRateRtnMegaCps = SignalRate;
+
+		AmbientRate = VL53L0_MAKEUINT16(localBuffer[9], localBuffer[8]);
+		pRangingMeasurementData->AmbientRateRtnMegaCps =
+			VL53L0_FIXPOINT97TOFIXPOINT1616(AmbientRate);
+
+		EffectiveSpadRtnCount = VL53L0_MAKEUINT16(localBuffer[3],
+			localBuffer[2]);
+		/* EffectiveSpadRtnCount is 8.8 format */
+		pRangingMeasurementData->EffectiveSpadRtnCount =
+			EffectiveSpadRtnCount;
+
+		DeviceRangeStatus = localBuffer[0];
+
+		/* Get Linearity Corrective Gain */
+		LinearityCorrectiveGain = PALDevDataGet(Dev,
+			LinearityCorrectiveGain);
+
+		/* Get ranging configuration */
+		RangeFractionalEnable = PALDevDataGet(Dev,
+			RangeFractionalEnable);
+
+		if (LinearityCorrectiveGain != 1000) {
+
+			tmpuint16 = (uint16_t)((LinearityCorrectiveGain
+				* tmpuint16 + 500) / 1000);
+
+			/* Implement Xtalk */
+			VL53L0_GETPARAMETERFIELD(Dev,
+				XTalkCompensationRateMegaCps,
+				XTalkCompensationRateMegaCps);
+			VL53L0_GETPARAMETERFIELD(Dev, XTalkCompensationEnable,
+				XTalkCompensationEnable);
+
+			if (XTalkCompensationEnable) {
+
+				if ((SignalRate
+					- ((XTalkCompensationRateMegaCps
+					* EffectiveSpadRtnCount) >> 8))
+					<= 0) {
+					if (RangeFractionalEnable)
+						XtalkRangeMilliMeter = 8888;
+					else
+						XtalkRangeMilliMeter = 8888
+							<< 2;
+				} else {
+					XtalkRangeMilliMeter =
+					(tmpuint16 * SignalRate)
+						/ (SignalRate
+						- ((XTalkCompensationRateMegaCps
+						* EffectiveSpadRtnCount)
+						>> 8));
+				}
+
+				tmpuint16 = XtalkRangeMilliMeter;
+			}
+
+		}
+
+		if (RangeFractionalEnable) {
+			pRangingMeasurementData->RangeMilliMeter =
+				(uint16_t)((tmpuint16) >> 2);
+			pRangingMeasurementData->RangeFractionalPart =
+				(uint8_t)((tmpuint16 & 0x03) << 6);
+		} else {
+			pRangingMeasurementData->RangeMilliMeter = tmpuint16;
+			pRangingMeasurementData->RangeFractionalPart = 0;
+		}
+
+		/*
+		 * For a standard definition of RangeStatus, this should
+		 * return 0 in case of good result after a ranging
+		 * The range status depends on the device so call a device
+		 * specific function to obtain the right Status.
+		 */
+		Status |= VL53L0_get_pal_range_status(Dev, DeviceRangeStatus,
+			SignalRate, EffectiveSpadRtnCount,
+			pRangingMeasurementData, &PalRangeStatus);
+
+		if (Status == VL53L0_ERROR_NONE)
+			pRangingMeasurementData->RangeStatus = PalRangeStatus;
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* Copy last read data into Dev buffer */
+		LastRangeDataBuffer = PALDevDataGet(Dev, LastRangeMeasure);
+
+		LastRangeDataBuffer.RangeMilliMeter =
+			pRangingMeasurementData->RangeMilliMeter;
+		LastRangeDataBuffer.RangeFractionalPart =
+			pRangingMeasurementData->RangeFractionalPart;
+		LastRangeDataBuffer.RangeDMaxMilliMeter =
+			pRangingMeasurementData->RangeDMaxMilliMeter;
+		LastRangeDataBuffer.MeasurementTimeUsec =
+			pRangingMeasurementData->MeasurementTimeUsec;
+		LastRangeDataBuffer.SignalRateRtnMegaCps =
+			pRangingMeasurementData->SignalRateRtnMegaCps;
+		LastRangeDataBuffer.AmbientRateRtnMegaCps =
+			pRangingMeasurementData->AmbientRateRtnMegaCps;
+		LastRangeDataBuffer.EffectiveSpadRtnCount =
+			pRangingMeasurementData->EffectiveSpadRtnCount;
+		LastRangeDataBuffer.RangeStatus =
+			pRangingMeasurementData->RangeStatus;
+
+		PALDevDataSet(Dev, LastRangeMeasure, LastRangeDataBuffer);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetMeasurementRefSignal(VL53L0_DEV Dev,
+	FixPoint1616_t *pMeasurementRefSignal)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pMeasurementRefSignal = PALDevDataGet(Dev, LastSignalRefMcps);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
+
+VL53L0_Error VL53L0_GetHistogramMeasurementData(VL53L0_DEV Dev,
+	VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_PerformSingleRangingMeasurement(VL53L0_DEV Dev,
+	VL53L0_RangingMeasurementData_t *pRangingMeasurementData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	/* This function will do a complete single ranging
+	 * Here we fix the mode!
+	 */
+	Status = VL53L0_SetDeviceMode(Dev, VL53L0_DEVICEMODE_SINGLE_RANGING);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_PerformSingleMeasurement(Dev);
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_GetRangingMeasurementData(Dev,
+			pRangingMeasurementData);
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_ClearInterruptMask(Dev, 0);
+
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetNumberOfROIZones(VL53L0_DEV Dev,
+	uint8_t NumberOfROIZones)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	if (NumberOfROIZones != 1)
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetNumberOfROIZones(VL53L0_DEV Dev,
+	uint8_t *pNumberOfROIZones)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pNumberOfROIZones = 1;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetMaxNumberOfROIZones(VL53L0_DEV Dev,
+	uint8_t *pMaxNumberOfROIZones)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	*pMaxNumberOfROIZones = 1;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* End Group PAL Measurement Functions */
+
+VL53L0_Error VL53L0_SetGpioConfig(VL53L0_DEV Dev, uint8_t Pin,
+	VL53L0_DeviceModes DeviceMode, VL53L0_GpioFunctionality Functionality,
+	VL53L0_InterruptPolarity Polarity)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t data;
+
+	LOG_FUNCTION_START("");
+
+	if (Pin != 0) {
+		Status = VL53L0_ERROR_GPIO_NOT_EXISTING;
+	} else if (DeviceMode == VL53L0_DEVICEMODE_GPIO_DRIVE) {
+		if (Polarity == VL53L0_INTERRUPTPOLARITY_LOW)
+			data = 0x10;
+		else
+			data = 1;
+
+		Status = VL53L0_WrByte(Dev,
+		VL53L0_REG_GPIO_HV_MUX_ACTIVE_HIGH, data);
+
+	} else if (DeviceMode == VL53L0_DEVICEMODE_GPIO_OSC) {
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0x80, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x85, 0x02);
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x04);
+		Status |= VL53L0_WrByte(Dev, 0xcd, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0xcc, 0x11);
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x07);
+		Status |= VL53L0_WrByte(Dev, 0xbe, 0x00);
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x06);
+		Status |= VL53L0_WrByte(Dev, 0xcc, 0x09);
+
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+
+	} else {
+
+		if (Status == VL53L0_ERROR_NONE) {
+			switch (Functionality) {
+			case VL53L0_GPIOFUNCTIONALITY_OFF:
+				data = 0x00;
+				break;
+			case VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW:
+				data = 0x01;
+				break;
+			case VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH:
+				data = 0x02;
+				break;
+			case VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT:
+				data = 0x03;
+				break;
+			case VL53L0_GPIOFUNCTIONALITY_NEW_MEASURE_READY:
+				data = 0x04;
+				break;
+			default:
+				Status =
+				VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED;
+			}
+		}
+
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L0_WrByte(Dev,
+			VL53L0_REG_SYSTEM_INTERRUPT_CONFIG_GPIO, data);
+
+		if (Status == VL53L0_ERROR_NONE) {
+			if (Polarity == VL53L0_INTERRUPTPOLARITY_LOW)
+				data = 0;
+			else
+				data = (uint8_t)(1 << 4);
+
+			Status = VL53L0_UpdateByte(Dev,
+			VL53L0_REG_GPIO_HV_MUX_ACTIVE_HIGH, 0xEF, data);
+		}
+
+		if (Status == VL53L0_ERROR_NONE)
+			VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+				Pin0GpioFunctionality, Functionality);
+
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L0_ClearInterruptMask(Dev, 0);
+
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetGpioConfig(VL53L0_DEV Dev, uint8_t Pin,
+	VL53L0_DeviceModes *pDeviceMode,
+	VL53L0_GpioFunctionality *pFunctionality,
+	VL53L0_InterruptPolarity *pPolarity)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_GpioFunctionality GpioFunctionality;
+	uint8_t data;
+
+	LOG_FUNCTION_START("");
+
+	/* pDeviceMode not managed by Ewok it return the current mode */
+
+	Status = VL53L0_GetDeviceMode(Dev, pDeviceMode);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (Pin != 0) {
+			Status = VL53L0_ERROR_GPIO_NOT_EXISTING;
+		} else {
+			Status = VL53L0_RdByte(Dev,
+			VL53L0_REG_SYSTEM_INTERRUPT_CONFIG_GPIO, &data);
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		switch (data & 0x07) {
+		case 0x00:
+			GpioFunctionality = VL53L0_GPIOFUNCTIONALITY_OFF;
+			break;
+		case 0x01:
+			GpioFunctionality =
+			VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_LOW;
+			break;
+		case 0x02:
+			GpioFunctionality =
+			VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_HIGH;
+			break;
+		case 0x03:
+			GpioFunctionality =
+			VL53L0_GPIOFUNCTIONALITY_THRESHOLD_CROSSED_OUT;
+			break;
+		case 0x04:
+			GpioFunctionality =
+			VL53L0_GPIOFUNCTIONALITY_NEW_MEASURE_READY;
+			break;
+		default:
+			Status = VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED;
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_RdByte(Dev, VL53L0_REG_GPIO_HV_MUX_ACTIVE_HIGH,
+			&data);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if ((data & (uint8_t)(1 << 4)) == 0)
+			*pPolarity = VL53L0_INTERRUPTPOLARITY_LOW;
+		else
+			*pPolarity = VL53L0_INTERRUPTPOLARITY_HIGH;
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		*pFunctionality = GpioFunctionality;
+		VL53L0_SETDEVICESPECIFICPARAMETER(Dev, Pin0GpioFunctionality,
+			GpioFunctionality);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetInterruptThresholds(VL53L0_DEV Dev,
+	VL53L0_DeviceModes DeviceMode, FixPoint1616_t ThresholdLow,
+	FixPoint1616_t ThresholdHigh)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t Threshold16;
+
+	LOG_FUNCTION_START("");
+
+	/* no dependency on DeviceMode for Ewok */
+	/* Need to divide by 2 because the FW will apply a x2 */
+	Threshold16 = (uint16_t)((ThresholdLow >> 17) & 0x00fff);
+	Status = VL53L0_WrWord(Dev, VL53L0_REG_SYSTEM_THRESH_LOW, Threshold16);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* Need to divide by 2 because the FW will apply a x2 */
+		Threshold16 = (uint16_t)((ThresholdHigh >> 17) & 0x00fff);
+		Status = VL53L0_WrWord(Dev, VL53L0_REG_SYSTEM_THRESH_HIGH,
+			Threshold16);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetInterruptThresholds(VL53L0_DEV Dev,
+	VL53L0_DeviceModes DeviceMode, FixPoint1616_t *pThresholdLow,
+	FixPoint1616_t *pThresholdHigh)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t Threshold16;
+
+	LOG_FUNCTION_START("");
+
+	/* no dependency on DeviceMode for Ewok */
+
+	Status = VL53L0_RdWord(Dev, VL53L0_REG_SYSTEM_THRESH_LOW, &Threshold16);
+	/* Need to multiply by 2 because the FW will apply a x2 */
+	*pThresholdLow = (FixPoint1616_t)((0x00fff & Threshold16) << 17);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdWord(Dev, VL53L0_REG_SYSTEM_THRESH_HIGH,
+			&Threshold16);
+		/* Need to multiply by 2 because the FW will apply a x2 */
+		*pThresholdHigh =
+			(FixPoint1616_t)((0x00fff & Threshold16) << 17);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetStopCompletedStatus(VL53L0_DEV Dev,
+	uint32_t *pStopStatus)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte = 0;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_RdByte(Dev, 0x04, &Byte);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev, 0xFF, 0x0);
+
+	*pStopStatus = Byte;
+
+	if (Byte == 0) {
+		Status = VL53L0_WrByte(Dev, 0x80, 0x01);
+		Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+		Status = VL53L0_WrByte(Dev, 0x00, 0x00);
+		Status = VL53L0_WrByte(Dev, 0x91,
+			PALDevDataGet(Dev, StopVariable));
+		Status = VL53L0_WrByte(Dev, 0x00, 0x01);
+		Status = VL53L0_WrByte(Dev, 0xFF, 0x00);
+		Status = VL53L0_WrByte(Dev, 0x80, 0x00);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* Group PAL Interrupt Functions */
+VL53L0_Error VL53L0_ClearInterruptMask(VL53L0_DEV Dev, uint32_t InterruptMask)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t LoopCount;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	/* clear bit 0 range interrupt, bit 1 error interrupt */
+	LoopCount = 0;
+	do {
+		Status = VL53L0_WrByte(Dev,
+			VL53L0_REG_SYSTEM_INTERRUPT_CLEAR, 0x01);
+		Status |= VL53L0_WrByte(Dev,
+			VL53L0_REG_SYSTEM_INTERRUPT_CLEAR, 0x00);
+		Status |= VL53L0_RdByte(Dev,
+			VL53L0_REG_RESULT_INTERRUPT_STATUS, &Byte);
+		LoopCount++;
+	} while (((Byte & 0x07) != 0x00)
+			&& (LoopCount < 3)
+			&& (Status == VL53L0_ERROR_NONE));
+
+
+	if (LoopCount >= 3)
+		Status = VL53L0_ERROR_INTERRUPT_NOT_CLEARED;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetInterruptMaskStatus(VL53L0_DEV Dev,
+	uint32_t *pInterruptMaskStatus)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_RdByte(Dev, VL53L0_REG_RESULT_INTERRUPT_STATUS, &Byte);
+	*pInterruptMaskStatus = Byte & 0x07;
+
+	if (Byte & 0x18)
+		Status = VL53L0_ERROR_RANGE_ERROR;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_EnableInterruptMask(VL53L0_DEV Dev, uint32_t InterruptMask)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	/* not implemented for VL53L0 */
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* End Group PAL Interrupt Functions */
+
+/* Group SPAD functions */
+
+VL53L0_Error VL53L0_SetSpadAmbientDamperThreshold(VL53L0_DEV Dev,
+	uint16_t SpadAmbientDamperThreshold)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrWord(Dev, 0x40, SpadAmbientDamperThreshold);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetSpadAmbientDamperThreshold(VL53L0_DEV Dev,
+	uint16_t *pSpadAmbientDamperThreshold)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_RdWord(Dev, 0x40, pSpadAmbientDamperThreshold);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_SetSpadAmbientDamperFactor(VL53L0_DEV Dev,
+	uint16_t SpadAmbientDamperFactor)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	Byte = (uint8_t)(SpadAmbientDamperFactor & 0x00FF);
+
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x42, Byte);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetSpadAmbientDamperFactor(VL53L0_DEV Dev,
+	uint16_t *pSpadAmbientDamperFactor)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t Byte;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_RdByte(Dev, 0x42, &Byte);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+	*pSpadAmbientDamperFactor = (uint16_t)Byte;
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+/* END Group SPAD functions */
+
+/*****************************************************************************
+ * Internal functions
+ *****************************************************************************/
+
+VL53L0_Error VL53L0_SetReferenceSpads(VL53L0_DEV Dev, uint32_t count,
+	uint8_t isApertureSpads)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_set_reference_spads(Dev, count, isApertureSpads);
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_GetReferenceSpads(VL53L0_DEV Dev, uint32_t *pSpadCount,
+	uint8_t *pIsApertureSpads)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_reference_spads(Dev, pSpadCount, pIsApertureSpads);
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_PerformRefSpadManagement(VL53L0_DEV Dev,
+	uint32_t *refSpadCount, uint8_t *isApertureSpads)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_perform_ref_spad_management(Dev, refSpadCount,
+		isApertureSpads);
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
diff --git a/drivers/input/misc/vl53L0/src/vl53l0_api_calibration.c b/drivers/input/misc/vl53L0/src/vl53l0_api_calibration.c
new file mode 100644
index 000000000000..fa7e579ddc17
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l0_api_calibration.c
@@ -0,0 +1,1284 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of STMicroelectronics nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+ NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+ IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ ******************************************************************************/
+
+#include "vl53l0_api.h"
+#include "vl53l0_api_core.h"
+#include "vl53l0_api_calibration.h"
+
+#ifndef __KERNEL__
+#include <stdlib.h>
+#endif
+
+#define LOG_FUNCTION_START(fmt, ...) \
+	_LOG_FUNCTION_START(TRACE_MODULE_API, fmt, ##__VA_ARGS__)
+#define LOG_FUNCTION_END(status, ...) \
+	_LOG_FUNCTION_END(TRACE_MODULE_API, status, ##__VA_ARGS__)
+#define LOG_FUNCTION_END_FMT(status, fmt, ...) \
+	_LOG_FUNCTION_END_FMT(TRACE_MODULE_API, status, fmt, ##__VA_ARGS__)
+
+#define REF_ARRAY_SPAD_0  0
+#define REF_ARRAY_SPAD_5  5
+#define REF_ARRAY_SPAD_10 10
+
+uint32_t refArrayQuadrants[4] = {REF_ARRAY_SPAD_10, REF_ARRAY_SPAD_5,
+		REF_ARRAY_SPAD_0, REF_ARRAY_SPAD_5 };
+
+VL53L0_Error VL53L0_perform_xtalk_calibration(VL53L0_DEV Dev,
+			FixPoint1616_t XTalkCalDistance,
+			FixPoint1616_t *pXTalkCompensationRateMegaCps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t sum_ranging = 0;
+	uint16_t sum_spads = 0;
+	FixPoint1616_t sum_signalRate = 0;
+	FixPoint1616_t total_count = 0;
+	uint8_t xtalk_meas = 0;
+	VL53L0_RangingMeasurementData_t RangingMeasurementData;
+	FixPoint1616_t xTalkStoredMeanSignalRate;
+	FixPoint1616_t xTalkStoredMeanRange;
+	FixPoint1616_t xTalkStoredMeanRtnSpads;
+	uint32_t signalXTalkTotalPerSpad;
+	uint32_t xTalkStoredMeanRtnSpadsAsInt;
+	uint32_t xTalkCalDistanceAsInt;
+	FixPoint1616_t XTalkCompensationRateMegaCps;
+
+	if (XTalkCalDistance <= 0)
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+
+	/* Disable the XTalk compensation */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetXTalkCompensationEnable(Dev, 0);
+
+	/* Disable the RIT */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_SetLimitCheckEnable(Dev,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD, 0);
+	}
+
+	/* Perform 50 measurements and compute the averages */
+	if (Status == VL53L0_ERROR_NONE) {
+		sum_ranging = 0;
+		sum_spads = 0;
+		sum_signalRate = 0;
+		total_count = 0;
+		for (xtalk_meas = 0; xtalk_meas < 50; xtalk_meas++) {
+			Status = VL53L0_PerformSingleRangingMeasurement(Dev,
+				&RangingMeasurementData);
+
+			if (Status != VL53L0_ERROR_NONE)
+				break;
+
+			/* The range is valid when RangeStatus = 0 */
+			if (RangingMeasurementData.RangeStatus == 0) {
+				sum_ranging = sum_ranging +
+					RangingMeasurementData.RangeMilliMeter;
+				sum_signalRate = sum_signalRate +
+				RangingMeasurementData.SignalRateRtnMegaCps;
+				sum_spads = sum_spads +
+				RangingMeasurementData.EffectiveSpadRtnCount
+					/ 256;
+				total_count = total_count + 1;
+			}
+		}
+
+		/* no valid values found */
+		if (total_count == 0)
+			Status = VL53L0_ERROR_RANGE_ERROR;
+
+	}
+
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* FixPoint1616_t / uint16_t = FixPoint1616_t */
+		xTalkStoredMeanSignalRate = sum_signalRate / total_count;
+		xTalkStoredMeanRange = (FixPoint1616_t)((uint32_t)(
+			sum_ranging << 16) / total_count);
+		xTalkStoredMeanRtnSpads = (FixPoint1616_t)((uint32_t)(
+			sum_spads << 16) / total_count);
+
+		/* Round Mean Spads to Whole Number.
+		 * Typically the calculated mean SPAD count is a whole number
+		 * or very close to a whole
+		 * number, therefore any truncation will not result in a
+		 * significant loss in accuracy.
+		 * Also, for a grey target at a typical distance of around
+		 * 400mm, around 220 SPADs will
+		 * be enabled, therefore, any truncation will result in a loss
+		 * of accuracy of less than
+		 * 0.5%.
+		 */
+		xTalkStoredMeanRtnSpadsAsInt = (xTalkStoredMeanRtnSpads +
+			0x8000) >> 16;
+
+		/* Round Cal Distance to Whole Number.
+		 * Note that the cal distance is in mm, therefore no resolution
+		 * is lost.
+		 */
+		 xTalkCalDistanceAsInt = (XTalkCalDistance + 0x8000) >> 16;
+
+		if (xTalkStoredMeanRtnSpadsAsInt == 0 ||
+		   xTalkCalDistanceAsInt == 0 ||
+		   xTalkStoredMeanRange >= XTalkCalDistance) {
+			XTalkCompensationRateMegaCps = 0;
+		} else {
+			/* Round Cal Distance to Whole Number.
+			 * Note that the cal distance is in mm, therefore no
+			 * resolution is lost.
+			 */
+			xTalkCalDistanceAsInt = (XTalkCalDistance +
+				0x8000) >> 16;
+
+			/* Apply division by mean spad count early in the
+			 * calculation to keep the numbers small.
+			 * This ensures we can maintain a 32bit calculation.
+			 * Fixed1616 / int := Fixed1616
+			 */
+			signalXTalkTotalPerSpad = (xTalkStoredMeanSignalRate) /
+				xTalkStoredMeanRtnSpadsAsInt;
+
+			/* Complete the calculation for total Signal XTalk per
+			 * SPAD
+			 * Fixed1616 * (Fixed1616 - Fixed1616/int) :=
+			 * (2^16 * Fixed1616)
+			 */
+			signalXTalkTotalPerSpad *= ((1 << 16) -
+				(xTalkStoredMeanRange / xTalkCalDistanceAsInt));
+
+			/* Round from 2^16 * Fixed1616, to Fixed1616. */
+			XTalkCompensationRateMegaCps = (signalXTalkTotalPerSpad
+				+ 0x8000) >> 16;
+		}
+
+		*pXTalkCompensationRateMegaCps = XTalkCompensationRateMegaCps;
+
+		/* Enable the XTalk compensation */
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L0_SetXTalkCompensationEnable(Dev, 1);
+
+		/* Enable the XTalk compensation */
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L0_SetXTalkCompensationRateMegaCps(Dev,
+					XTalkCompensationRateMegaCps);
+
+	}
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_perform_offset_calibration(VL53L0_DEV Dev,
+			FixPoint1616_t CalDistanceMilliMeter,
+			int32_t *pOffsetMicroMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t sum_ranging = 0;
+	FixPoint1616_t total_count = 0;
+	VL53L0_RangingMeasurementData_t RangingMeasurementData;
+	FixPoint1616_t StoredMeanRange;
+	uint32_t StoredMeanRangeAsInt;
+	uint32_t CalDistanceAsInt_mm;
+	uint8_t SequenceStepEnabled;
+	int meas = 0;
+
+	if (CalDistanceMilliMeter <= 0)
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetOffsetCalibrationDataMicroMeter(Dev, 0);
+
+
+	/* Get the value of the TCC */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_GetSequenceStepEnable(Dev,
+				VL53L0_SEQUENCESTEP_TCC, &SequenceStepEnabled);
+
+
+	/* Disable the TCC */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetSequenceStepEnable(Dev,
+				VL53L0_SEQUENCESTEP_TCC, 0);
+
+
+	/* Disable the RIT */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_SetLimitCheckEnable(Dev,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD, 0);
+
+	/* Perform 50 measurements and compute the averages */
+	if (Status == VL53L0_ERROR_NONE) {
+		sum_ranging = 0;
+		total_count = 0;
+		for (meas = 0; meas < 50; meas++) {
+			Status = VL53L0_PerformSingleRangingMeasurement(Dev,
+					&RangingMeasurementData);
+
+			if (Status != VL53L0_ERROR_NONE)
+				break;
+
+			/* The range is valid when RangeStatus = 0 */
+			if (RangingMeasurementData.RangeStatus == 0) {
+				sum_ranging = sum_ranging +
+					RangingMeasurementData.RangeMilliMeter;
+				total_count = total_count + 1;
+			}
+		}
+
+		/* no valid values found */
+		if (total_count == 0)
+			Status = VL53L0_ERROR_RANGE_ERROR;
+	}
+
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* FixPoint1616_t / uint16_t = FixPoint1616_t */
+		StoredMeanRange = (FixPoint1616_t)((uint32_t)(sum_ranging << 16)
+			/ total_count);
+
+		StoredMeanRangeAsInt = (StoredMeanRange + 0x8000) >> 16;
+
+		/* Round Cal Distance to Whole Number.
+		 * Note that the cal distance is in mm, therefore no resolution
+		 * is lost.
+		 */
+		 CalDistanceAsInt_mm = (CalDistanceMilliMeter + 0x8000) >> 16;
+
+		 *pOffsetMicroMeter = (CalDistanceAsInt_mm -
+				 StoredMeanRangeAsInt) * 1000;
+
+		/* Apply the calculated offset */
+		if (Status == VL53L0_ERROR_NONE) {
+			VL53L0_SETPARAMETERFIELD(Dev, RangeOffsetMicroMeters,
+					*pOffsetMicroMeter);
+			Status = VL53L0_SetOffsetCalibrationDataMicroMeter(Dev,
+					*pOffsetMicroMeter);
+		}
+
+	}
+
+	/* Restore the TCC */
+	if (Status == VL53L0_ERROR_NONE) {
+		if (SequenceStepEnabled != 0)
+			Status = VL53L0_SetSequenceStepEnable(Dev,
+					VL53L0_SEQUENCESTEP_TCC, 1);
+	}
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_set_offset_calibration_data_micro_meter(VL53L0_DEV Dev,
+		int32_t OffsetCalibrationDataMicroMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t cMaxOffsetMicroMeter = 511000;
+	int32_t cMinOffsetMicroMeter = -512000;
+	int16_t cOffsetRange = 4096;
+	uint32_t encodedOffsetVal;
+
+	LOG_FUNCTION_START("");
+
+	if (OffsetCalibrationDataMicroMeter > cMaxOffsetMicroMeter)
+		OffsetCalibrationDataMicroMeter = cMaxOffsetMicroMeter;
+	else if (OffsetCalibrationDataMicroMeter < cMinOffsetMicroMeter)
+		OffsetCalibrationDataMicroMeter = cMinOffsetMicroMeter;
+
+	/* The offset register is 10.2 format and units are mm
+	 * therefore conversion is applied by a division of
+	 * 250.
+	 */
+	if (OffsetCalibrationDataMicroMeter >= 0) {
+		encodedOffsetVal =
+			OffsetCalibrationDataMicroMeter/250;
+	} else {
+		encodedOffsetVal =
+			cOffsetRange +
+			OffsetCalibrationDataMicroMeter/250;
+	}
+
+	Status = VL53L0_WrWord(Dev,
+		VL53L0_REG_ALGO_PART_TO_PART_RANGE_OFFSET_MM,
+		encodedOffsetVal);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_offset_calibration_data_micro_meter(VL53L0_DEV Dev,
+		int32_t *pOffsetCalibrationDataMicroMeter)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint16_t RangeOffsetRegister;
+	int16_t cMaxOffset = 2047;
+	int16_t cOffsetRange = 4096;
+
+	/* Note that offset has 10.2 format */
+
+	Status = VL53L0_RdWord(Dev,
+				VL53L0_REG_ALGO_PART_TO_PART_RANGE_OFFSET_MM,
+				&RangeOffsetRegister);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		RangeOffsetRegister = (RangeOffsetRegister & 0x0fff);
+
+		/* Apply 12 bit 2's compliment conversion */
+		if (RangeOffsetRegister > cMaxOffset)
+			*pOffsetCalibrationDataMicroMeter =
+				(int16_t)(RangeOffsetRegister - cOffsetRange)
+					* 250;
+		else
+			*pOffsetCalibrationDataMicroMeter =
+				(int16_t)RangeOffsetRegister * 250;
+
+	}
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_apply_offset_adjustment(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t CorrectedOffsetMicroMeters;
+	int32_t CurrentOffsetMicroMeters;
+
+	/* if we run on this function we can read all the NVM info
+	 * used by the API
+	 */
+	Status = VL53L0_get_info_from_device(Dev, 7);
+
+	/* Read back current device offset */
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_GetOffsetCalibrationDataMicroMeter(Dev,
+					&CurrentOffsetMicroMeters);
+	}
+
+	/* Apply Offset Adjustment derived from 400mm measurements */
+	if (Status == VL53L0_ERROR_NONE) {
+
+		/* Store initial device offset */
+		PALDevDataSet(Dev, Part2PartOffsetNVMMicroMeter,
+			CurrentOffsetMicroMeters);
+
+		CorrectedOffsetMicroMeters = CurrentOffsetMicroMeters +
+			(int32_t)PALDevDataGet(Dev,
+				Part2PartOffsetAdjustmentNVMMicroMeter);
+
+		Status = VL53L0_SetOffsetCalibrationDataMicroMeter(Dev,
+					CorrectedOffsetMicroMeters);
+
+		/* store current, adjusted offset */
+		if (Status == VL53L0_ERROR_NONE) {
+			VL53L0_SETPARAMETERFIELD(Dev, RangeOffsetMicroMeters,
+					CorrectedOffsetMicroMeters);
+		}
+	}
+
+	return Status;
+}
+
+void get_next_good_spad(uint8_t goodSpadArray[], uint32_t size,
+			uint32_t curr, int32_t *next)
+{
+	uint32_t startIndex;
+	uint32_t fineOffset;
+	uint32_t cSpadsPerByte = 8;
+	uint32_t coarseIndex;
+	uint32_t fineIndex;
+	uint8_t dataByte;
+	uint8_t success = 0;
+
+	/*
+	 * Starting with the current good spad, loop through the array to find
+	 * the next. i.e. the next bit set in the sequence.
+	 *
+	 * The coarse index is the byte index of the array and the fine index is
+	 * the index of the bit within each byte.
+	 */
+
+	*next = -1;
+
+	startIndex = curr / cSpadsPerByte;
+	fineOffset = curr % cSpadsPerByte;
+
+	for (coarseIndex = startIndex; ((coarseIndex < size) && !success);
+				coarseIndex++) {
+		fineIndex = 0;
+		dataByte = goodSpadArray[coarseIndex];
+
+		if (coarseIndex == startIndex) {
+			/* locate the bit position of the provided current
+			 * spad bit before iterating
+			 */
+			dataByte >>= fineOffset;
+			fineIndex = fineOffset;
+		}
+
+		while (fineIndex < cSpadsPerByte) {
+			if ((dataByte & 0x1) == 1) {
+				success = 1;
+				*next = coarseIndex * cSpadsPerByte + fineIndex;
+				break;
+			}
+			dataByte >>= 1;
+			fineIndex++;
+		}
+	}
+}
+
+
+uint8_t is_aperture(uint32_t spadIndex)
+{
+	/*
+	 * This function reports if a given spad index is an aperture SPAD by
+	 * deriving the quadrant.
+	 */
+	uint32_t quadrant;
+	uint8_t isAperture = 1;
+
+	quadrant = spadIndex >> 6;
+	if (refArrayQuadrants[quadrant] == REF_ARRAY_SPAD_0)
+		isAperture = 0;
+
+	return isAperture;
+}
+
+
+VL53L0_Error enable_spad_bit(uint8_t spadArray[], uint32_t size,
+	uint32_t spadIndex)
+{
+	VL53L0_Error status = VL53L0_ERROR_NONE;
+	uint32_t cSpadsPerByte = 8;
+	uint32_t coarseIndex;
+	uint32_t fineIndex;
+
+	coarseIndex = spadIndex / cSpadsPerByte;
+	fineIndex = spadIndex % cSpadsPerByte;
+	if (coarseIndex >= size)
+		status = VL53L0_ERROR_REF_SPAD_INIT;
+	else
+		spadArray[coarseIndex] |= (1 << fineIndex);
+
+	return status;
+}
+
+VL53L0_Error count_enabled_spads(uint8_t spadArray[],
+		uint32_t byteCount, uint32_t maxSpads,
+		uint32_t *pTotalSpadsEnabled, uint8_t *pIsAperture)
+{
+	VL53L0_Error status = VL53L0_ERROR_NONE;
+	uint32_t cSpadsPerByte = 8;
+	uint32_t lastByte;
+	uint32_t lastBit;
+	uint32_t byteIndex = 0;
+	uint32_t bitIndex = 0;
+	uint8_t tempByte;
+	uint8_t spadTypeIdentified = 0;
+
+	/* The entire array will not be used for spads, therefore the last
+	 * byte and last bit is determined from the max spads value.
+	 */
+
+	lastByte = maxSpads / cSpadsPerByte;
+	lastBit = maxSpads % cSpadsPerByte;
+
+	/* Check that the max spads value does not exceed the array bounds. */
+	if (lastByte >= byteCount)
+		status = VL53L0_ERROR_REF_SPAD_INIT;
+
+	*pTotalSpadsEnabled = 0;
+
+	/* Count the bits enabled in the whole bytes */
+	for (byteIndex = 0; byteIndex <= (lastByte - 1); byteIndex++) {
+		tempByte = spadArray[byteIndex];
+
+		for (bitIndex = 0; bitIndex <= cSpadsPerByte; bitIndex++) {
+			if ((tempByte & 0x01) == 1) {
+				(*pTotalSpadsEnabled)++;
+
+				if (!spadTypeIdentified) {
+					*pIsAperture = 1;
+					if ((byteIndex < 2) && (bitIndex < 4))
+						*pIsAperture = 0;
+					spadTypeIdentified = 1;
+				}
+			}
+			tempByte >>= 1;
+		}
+	}
+
+	/* Count the number of bits enabled in the last byte accounting
+	 * for the fact that not all bits in the byte may be used.
+	 */
+	tempByte = spadArray[lastByte];
+
+	for (bitIndex = 0; bitIndex <= lastBit; bitIndex++) {
+		if ((tempByte & 0x01) == 1)
+			(*pTotalSpadsEnabled)++;
+	}
+
+	return status;
+}
+
+VL53L0_Error set_ref_spad_map(VL53L0_DEV Dev, uint8_t *refSpadArray)
+{
+	VL53L0_Error status = VL53L0_WriteMulti(Dev,
+				VL53L0_REG_GLOBAL_CONFIG_SPAD_ENABLES_REF_0,
+				refSpadArray, 6);
+	return status;
+}
+
+VL53L0_Error get_ref_spad_map(VL53L0_DEV Dev, uint8_t *refSpadArray)
+{
+	VL53L0_Error status = VL53L0_ReadMulti(Dev,
+				VL53L0_REG_GLOBAL_CONFIG_SPAD_ENABLES_REF_0,
+				refSpadArray,
+				6);
+	return status;
+}
+
+VL53L0_Error enable_ref_spads(VL53L0_DEV Dev,
+				uint8_t apertureSpads,
+				uint8_t goodSpadArray[],
+				uint8_t spadArray[],
+				uint32_t size,
+				uint32_t start,
+				uint32_t offset,
+				uint32_t spadCount,
+				uint32_t *lastSpad)
+{
+	VL53L0_Error status = VL53L0_ERROR_NONE;
+	uint32_t index;
+	uint32_t i;
+	int32_t nextGoodSpad = offset;
+	uint32_t currentSpad;
+	uint8_t checkSpadArray[6];
+
+	/*
+	 * This function takes in a spad array which may or may not have SPADS
+	 * already enabled and appends from a given offset a requested number
+	 * of new SPAD enables. The 'good spad map' is applied to
+	 * determine the next SPADs to enable.
+	 *
+	 * This function applies to only aperture or only non-aperture spads.
+	 * Checks are performed to ensure this.
+	 */
+
+	currentSpad = offset;
+	for (index = 0; index < spadCount; index++) {
+		get_next_good_spad(goodSpadArray, size, currentSpad,
+			&nextGoodSpad);
+
+		if (nextGoodSpad == -1) {
+			status = VL53L0_ERROR_REF_SPAD_INIT;
+			break;
+		}
+
+		/* Confirm that the next good SPAD is non-aperture */
+		if (is_aperture(start + nextGoodSpad) != apertureSpads) {
+			/* if we can't get the required number of good aperture
+			 * spads from the current quadrant then this is an error
+			 */
+			status = VL53L0_ERROR_REF_SPAD_INIT;
+			break;
+		}
+		currentSpad = (uint32_t)nextGoodSpad;
+		enable_spad_bit(spadArray, size, currentSpad);
+		currentSpad++;
+	}
+	*lastSpad = currentSpad;
+
+	if (status == VL53L0_ERROR_NONE)
+		status = set_ref_spad_map(Dev, spadArray);
+
+
+	if (status == VL53L0_ERROR_NONE) {
+		status = get_ref_spad_map(Dev, checkSpadArray);
+
+		i = 0;
+
+		/* Compare spad maps. If not equal report error. */
+		while (i < size) {
+			if (spadArray[i] != checkSpadArray[i]) {
+				status = VL53L0_ERROR_REF_SPAD_INIT;
+				break;
+			}
+			i++;
+		}
+	}
+	return status;
+}
+
+
+VL53L0_Error perform_ref_signal_measurement(VL53L0_DEV Dev,
+		uint16_t *refSignalRate)
+{
+	VL53L0_Error status = VL53L0_ERROR_NONE;
+	VL53L0_RangingMeasurementData_t rangingMeasurementData;
+
+	uint8_t SequenceConfig = 0;
+
+	/* store the value of the sequence config,
+	 * this will be reset before the end of the function
+	 */
+
+	SequenceConfig = PALDevDataGet(Dev, SequenceConfig);
+
+	/*
+	 * This function performs a reference signal rate measurement.
+	 */
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_WrByte(Dev,
+			VL53L0_REG_SYSTEM_SEQUENCE_CONFIG, 0xC0);
+
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_PerformSingleRangingMeasurement(Dev,
+				&rangingMeasurementData);
+
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_RdWord(Dev,
+			VL53L0_REG_RESULT_PEAK_SIGNAL_RATE_REF,
+			refSignalRate);
+
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	if (status == VL53L0_ERROR_NONE) {
+		/* restore the previous Sequence Config */
+		status = VL53L0_WrByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG,
+				SequenceConfig);
+		if (status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, SequenceConfig, SequenceConfig);
+	}
+
+	return status;
+}
+
+VL53L0_Error VL53L0_perform_ref_spad_management(VL53L0_DEV Dev,
+				uint32_t *refSpadCount,
+				uint8_t *isApertureSpads)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t lastSpadArray[6];
+	uint8_t startSelect = 0xB4;
+	uint32_t minimumSpadCount = 3;
+	uint32_t maxSpadCount = 44;
+	uint32_t currentSpadIndex = 0;
+	uint32_t lastSpadIndex = 0;
+	int32_t nextGoodSpad = 0;
+	uint16_t targetRefRate = 0x0A00; /* 20 MCPS in 9:7 format */
+	uint16_t peakSignalRateRef;
+	uint32_t needAptSpads = 0;
+	uint32_t index = 0;
+	uint32_t spadArraySize = 6;
+	uint32_t signalRateDiff = 0;
+	uint32_t lastSignalRateDiff = 0;
+	uint8_t complete = 0;
+	uint8_t VhvSettings = 0;
+	uint8_t PhaseCal = 0;
+	uint32_t refSpadCount_int = 0;
+	uint8_t	 isApertureSpads_int = 0;
+
+	/*
+	 * The reference SPAD initialization procedure determines the minimum
+	 * amount of reference spads to be enables to achieve a target reference
+	 * signal rate and should be performed once during initialization.
+	 *
+	 * Either aperture or non-aperture spads are applied but never both.
+	 * Firstly non-aperture spads are set, begining with 5 spads, and
+	 * increased one spad at a time until the closest measurement to the
+	 * target rate is achieved.
+	 *
+	 * If the target rate is exceeded when 5 non-aperture spads are enabled,
+	 * initialization is performed instead with aperture spads.
+	 *
+	 * When setting spads, a 'Good Spad Map' is applied.
+	 *
+	 * This procedure operates within a SPAD window of interest of a maximum
+	 * 44 spads.
+	 * The start point is currently fixed to 180, which lies towards the end
+	 * of the non-aperture quadrant and runs in to the adjacent aperture
+	 * quadrant.
+	 */
+
+
+	targetRefRate = PALDevDataGet(Dev, targetRefRate);
+
+	/*
+	 * Initialize Spad arrays.
+	 * Currently the good spad map is initialised to 'All good'.
+	 * This is a short term implementation. The good spad map will be
+	 * provided as an input.
+	 * Note that there are 6 bytes. Only the first 44 bits will be used to
+	 * represent spads.
+	 */
+	for (index = 0; index < spadArraySize; index++)
+		Dev->Data.SpadData.RefSpadEnables[index] = 0;
+
+
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev,
+			VL53L0_REG_DYNAMIC_SPAD_REF_EN_START_OFFSET, 0x00);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev,
+			VL53L0_REG_DYNAMIC_SPAD_NUM_REQUESTED_REF_SPAD, 0x2C);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev,
+			VL53L0_REG_GLOBAL_CONFIG_REF_EN_START_SELECT,
+			startSelect);
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_POWER_MANAGEMENT_GO1_POWER_FORCE, 0);
+
+	/* Perform ref calibration */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_perform_ref_calibration(Dev, &VhvSettings,
+			&PhaseCal, 0);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* Enable Minimum NON-APERTURE Spads */
+		currentSpadIndex = 0;
+		lastSpadIndex = currentSpadIndex;
+		needAptSpads = 0;
+		Status = enable_ref_spads(Dev,
+					needAptSpads,
+					Dev->Data.SpadData.RefGoodSpadMap,
+					Dev->Data.SpadData.RefSpadEnables,
+					spadArraySize,
+					startSelect,
+					currentSpadIndex,
+					minimumSpadCount,
+					&lastSpadIndex);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		currentSpadIndex = lastSpadIndex;
+
+		Status = perform_ref_signal_measurement(Dev,
+			&peakSignalRateRef);
+		if ((Status == VL53L0_ERROR_NONE) &&
+			(peakSignalRateRef > targetRefRate)) {
+			/* Signal rate measurement too high,
+			 * switch to APERTURE SPADs
+			 */
+
+			for (index = 0; index < spadArraySize; index++)
+				Dev->Data.SpadData.RefSpadEnables[index] = 0;
+
+
+			/* Increment to the first APERTURE spad */
+			while ((is_aperture(startSelect + currentSpadIndex)
+				== 0) && (currentSpadIndex < maxSpadCount)) {
+				currentSpadIndex++;
+			}
+
+			needAptSpads = 1;
+
+			Status = enable_ref_spads(Dev,
+					needAptSpads,
+					Dev->Data.SpadData.RefGoodSpadMap,
+					Dev->Data.SpadData.RefSpadEnables,
+					spadArraySize,
+					startSelect,
+					currentSpadIndex,
+					minimumSpadCount,
+					&lastSpadIndex);
+
+			if (Status == VL53L0_ERROR_NONE) {
+				currentSpadIndex = lastSpadIndex;
+				Status = perform_ref_signal_measurement(Dev,
+						&peakSignalRateRef);
+
+				if ((Status == VL53L0_ERROR_NONE) &&
+					(peakSignalRateRef > targetRefRate)) {
+					/* Signal rate still too high after
+					 * setting the minimum number of
+					 * APERTURE spads. Can do no more
+					 * therefore set the min number of
+					 * aperture spads as the result.
+					 */
+					isApertureSpads_int = 1;
+					refSpadCount_int = minimumSpadCount;
+				}
+			}
+		} else {
+			needAptSpads = 0;
+		}
+	}
+
+	if ((Status == VL53L0_ERROR_NONE) &&
+		(peakSignalRateRef < targetRefRate)) {
+		/* At this point, the minimum number of either aperture
+		 * or non-aperture spads have been set. Proceed to add
+		 * spads and perform measurements until the target
+		 * reference is reached.
+		 */
+		isApertureSpads_int = needAptSpads;
+		refSpadCount_int	= minimumSpadCount;
+
+		memcpy(lastSpadArray, Dev->Data.SpadData.RefSpadEnables,
+				spadArraySize);
+		lastSignalRateDiff = abs(peakSignalRateRef -
+			targetRefRate);
+		complete = 0;
+
+		while (!complete) {
+			get_next_good_spad(
+				Dev->Data.SpadData.RefGoodSpadMap,
+				spadArraySize, currentSpadIndex,
+				&nextGoodSpad);
+
+			if (nextGoodSpad == -1) {
+				Status = VL53L0_ERROR_REF_SPAD_INIT;
+				break;
+			}
+
+			(refSpadCount_int)++;
+
+			/* Cannot combine Aperture and Non-Aperture spads, so
+			 * ensure the current spad is of the correct type.
+			 */
+			if (is_aperture((uint32_t)startSelect + nextGoodSpad) !=
+					needAptSpads) {
+				Status = VL53L0_ERROR_REF_SPAD_INIT;
+				break;
+			}
+
+			currentSpadIndex = nextGoodSpad;
+			Status = enable_spad_bit(
+					Dev->Data.SpadData.RefSpadEnables,
+					spadArraySize, currentSpadIndex);
+
+			if (Status == VL53L0_ERROR_NONE) {
+				currentSpadIndex++;
+				/* Proceed to apply the additional spad and
+				 * perform measurement.
+				 */
+				Status = set_ref_spad_map(Dev,
+					Dev->Data.SpadData.RefSpadEnables);
+			}
+
+			if (Status != VL53L0_ERROR_NONE)
+				break;
+
+			Status = perform_ref_signal_measurement(Dev,
+					&peakSignalRateRef);
+
+			if (Status != VL53L0_ERROR_NONE)
+				break;
+
+			signalRateDiff = abs(peakSignalRateRef - targetRefRate);
+
+			if (peakSignalRateRef > targetRefRate) {
+				/* Select the spad map that provides the
+				 * measurement closest to the target rate,
+				 * either above or below it.
+				 */
+				if (signalRateDiff > lastSignalRateDiff) {
+					/* Previous spad map produced a closer
+					 * measurement, so choose this.
+					 */
+					Status = set_ref_spad_map(Dev,
+							lastSpadArray);
+					memcpy(
+					Dev->Data.SpadData.RefSpadEnables,
+					lastSpadArray, spadArraySize);
+
+					(refSpadCount_int)--;
+				}
+				complete = 1;
+			} else {
+				/* Continue to add spads */
+				lastSignalRateDiff = signalRateDiff;
+				memcpy(lastSpadArray,
+					Dev->Data.SpadData.RefSpadEnables,
+					spadArraySize);
+			}
+
+		} /* while */
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		*refSpadCount = refSpadCount_int;
+		*isApertureSpads = isApertureSpads_int;
+
+		VL53L0_SETDEVICESPECIFICPARAMETER(Dev, RefSpadsInitialised, 1);
+		VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+			ReferenceSpadCount, (uint8_t)(*refSpadCount));
+		VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+			ReferenceSpadType, *isApertureSpads);
+	}
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_set_reference_spads(VL53L0_DEV Dev,
+				 uint32_t count, uint8_t isApertureSpads)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint32_t currentSpadIndex = 0;
+	uint8_t startSelect = 0xB4;
+	uint32_t spadArraySize = 6;
+	uint32_t maxSpadCount = 44;
+	uint32_t lastSpadIndex;
+	uint32_t index;
+
+	/*
+	 * This function applies a requested number of reference spads, either
+	 * aperture or
+	 * non-aperture, as requested.
+	 * The good spad map will be applied.
+	 */
+
+	Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev,
+			VL53L0_REG_DYNAMIC_SPAD_REF_EN_START_OFFSET, 0x00);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev,
+			VL53L0_REG_DYNAMIC_SPAD_NUM_REQUESTED_REF_SPAD, 0x2C);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev,
+			VL53L0_REG_GLOBAL_CONFIG_REF_EN_START_SELECT,
+			startSelect);
+
+	for (index = 0; index < spadArraySize; index++)
+		Dev->Data.SpadData.RefSpadEnables[index] = 0;
+
+	if (isApertureSpads) {
+		/* Increment to the first APERTURE spad */
+		while ((is_aperture(startSelect + currentSpadIndex) == 0) &&
+			  (currentSpadIndex < maxSpadCount)) {
+			currentSpadIndex++;
+		}
+	}
+	Status = enable_ref_spads(Dev,
+				isApertureSpads,
+				Dev->Data.SpadData.RefGoodSpadMap,
+				Dev->Data.SpadData.RefSpadEnables,
+				spadArraySize,
+				startSelect,
+				currentSpadIndex,
+				count,
+				&lastSpadIndex);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_SETDEVICESPECIFICPARAMETER(Dev, RefSpadsInitialised, 1);
+		VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+			ReferenceSpadCount, (uint8_t)(count));
+		VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+			ReferenceSpadType, isApertureSpads);
+	}
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_reference_spads(VL53L0_DEV Dev,
+			uint32_t *pSpadCount, uint8_t *pIsApertureSpads)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t refSpadsInitialised;
+	uint8_t refSpadArray[6];
+	uint32_t cMaxSpadCount = 44;
+	uint32_t cSpadArraySize = 6;
+	uint32_t spadsEnabled;
+	uint8_t isApertureSpads = 0;
+
+	refSpadsInitialised = VL53L0_GETDEVICESPECIFICPARAMETER(Dev,
+					RefSpadsInitialised);
+
+	if (refSpadsInitialised == 1) {
+
+		*pSpadCount = (uint32_t)VL53L0_GETDEVICESPECIFICPARAMETER(Dev,
+			ReferenceSpadCount);
+		*pIsApertureSpads = VL53L0_GETDEVICESPECIFICPARAMETER(Dev,
+			ReferenceSpadType);
+	} else {
+
+		/* obtain spad info from device.*/
+		Status = get_ref_spad_map(Dev, refSpadArray);
+
+		if (Status == VL53L0_ERROR_NONE) {
+			/* count enabled spads within spad map array and
+			 * determine if Aperture or Non-Aperture.
+			 */
+			Status = count_enabled_spads(refSpadArray,
+							cSpadArraySize,
+							cMaxSpadCount,
+							&spadsEnabled,
+							&isApertureSpads);
+
+			if (Status == VL53L0_ERROR_NONE) {
+
+				*pSpadCount = spadsEnabled;
+				*pIsApertureSpads = isApertureSpads;
+
+				VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+					RefSpadsInitialised, 1);
+				VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+					ReferenceSpadCount,
+					(uint8_t)spadsEnabled);
+				VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+					ReferenceSpadType, isApertureSpads);
+			}
+		}
+	}
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_perform_single_ref_calibration(VL53L0_DEV Dev,
+		uint8_t vhv_init_byte)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSRANGE_START,
+				VL53L0_REG_SYSRANGE_MODE_START_STOP |
+				vhv_init_byte);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_measurement_poll_for_completion(Dev);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_ClearInterruptMask(Dev, 0);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSRANGE_START, 0x00);
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_ref_calibration_io(VL53L0_DEV Dev, uint8_t read_not_write,
+	uint8_t VhvSettings, uint8_t PhaseCal,
+	uint8_t *pVhvSettings, uint8_t *pPhaseCal,
+	const uint8_t vhv_enable, const uint8_t phase_enable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t PhaseCalint = 0;
+
+	/* Read VHV from device */
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	if (read_not_write) {
+		if (vhv_enable)
+			Status |= VL53L0_RdByte(Dev, 0xCB, pVhvSettings);
+		if (phase_enable)
+			Status |= VL53L0_RdByte(Dev, 0xEE, &PhaseCalint);
+	} else {
+		if (vhv_enable)
+			Status |= VL53L0_WrByte(Dev, 0xCB, VhvSettings);
+		if (phase_enable)
+			Status |= VL53L0_UpdateByte(Dev, 0xEE, 0x80, PhaseCal);
+	}
+
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0x00, 0x01);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	*pPhaseCal = (uint8_t)(PhaseCalint&0xEF);
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_perform_vhv_calibration(VL53L0_DEV Dev,
+	uint8_t *pVhvSettings, const uint8_t get_data_enable,
+	const uint8_t restore_config)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t SequenceConfig = 0;
+	uint8_t VhvSettings = 0;
+	uint8_t PhaseCal = 0;
+	uint8_t PhaseCalInt = 0;
+
+	/* store the value of the sequence config,
+	 * this will be reset before the end of the function
+	 */
+
+	if (restore_config)
+		SequenceConfig = PALDevDataGet(Dev, SequenceConfig);
+
+	/* Run VHV */
+	Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG, 0x01);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_perform_single_ref_calibration(Dev, 0x40);
+
+	/* Read VHV from device */
+	if ((Status == VL53L0_ERROR_NONE) && (get_data_enable == 1)) {
+		Status = VL53L0_ref_calibration_io(Dev, 1,
+			VhvSettings, PhaseCal, /* Not used here */
+			pVhvSettings, &PhaseCalInt,
+			1, 0);
+	} else
+		*pVhvSettings = 0;
+
+
+	if ((Status == VL53L0_ERROR_NONE) && restore_config) {
+		/* restore the previous Sequence Config */
+		Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG,
+				SequenceConfig);
+		if (Status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, SequenceConfig, SequenceConfig);
+
+	}
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_perform_phase_calibration(VL53L0_DEV Dev,
+	uint8_t *pPhaseCal, const uint8_t get_data_enable,
+	const uint8_t restore_config)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t SequenceConfig = 0;
+	uint8_t VhvSettings = 0;
+	uint8_t PhaseCal = 0;
+	uint8_t VhvSettingsint;
+
+	/* store the value of the sequence config,
+	 * this will be reset before the end of the function
+	 */
+
+	if (restore_config)
+		SequenceConfig = PALDevDataGet(Dev, SequenceConfig);
+
+	/* Run PhaseCal */
+	Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG, 0x02);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_perform_single_ref_calibration(Dev, 0x0);
+
+	/* Read PhaseCal from device */
+	if ((Status == VL53L0_ERROR_NONE) && (get_data_enable == 1)) {
+		Status = VL53L0_ref_calibration_io(Dev, 1,
+			VhvSettings, PhaseCal, /* Not used here */
+			&VhvSettingsint, pPhaseCal,
+			0, 1);
+	} else
+		*pPhaseCal = 0;
+
+
+	if ((Status == VL53L0_ERROR_NONE) && restore_config) {
+		/* restore the previous Sequence Config */
+		Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG,
+				SequenceConfig);
+		if (Status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, SequenceConfig, SequenceConfig);
+
+	}
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_perform_ref_calibration(VL53L0_DEV Dev,
+	uint8_t *pVhvSettings, uint8_t *pPhaseCal, uint8_t get_data_enable)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t SequenceConfig = 0;
+
+	/* store the value of the sequence config,
+	 * this will be reset before the end of the function
+	 */
+
+	SequenceConfig = PALDevDataGet(Dev, SequenceConfig);
+
+	/* In the following function we don't save the config to optimize
+	 * writes on device. Config is saved and restored only once.
+	 */
+	Status = VL53L0_perform_vhv_calibration(
+			Dev, pVhvSettings, get_data_enable, 0);
+
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_perform_phase_calibration(
+			Dev, pPhaseCal, get_data_enable, 0);
+
+
+	if (Status == VL53L0_ERROR_NONE) {
+		/* restore the previous Sequence Config */
+		Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSTEM_SEQUENCE_CONFIG,
+				SequenceConfig);
+		if (Status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, SequenceConfig, SequenceConfig);
+
+	}
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_set_ref_calibration(VL53L0_DEV Dev,
+		uint8_t VhvSettings, uint8_t PhaseCal)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t pVhvSettings;
+	uint8_t pPhaseCal;
+
+	Status = VL53L0_ref_calibration_io(Dev, 0,
+		VhvSettings, PhaseCal,
+		&pVhvSettings, &pPhaseCal,
+		1, 1);
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_ref_calibration(VL53L0_DEV Dev,
+		uint8_t *pVhvSettings, uint8_t *pPhaseCal)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t VhvSettings = 0;
+	uint8_t PhaseCal = 0;
+
+	Status = VL53L0_ref_calibration_io(Dev, 1,
+		VhvSettings, PhaseCal,
+		pVhvSettings, pPhaseCal,
+		1, 1);
+
+	return Status;
+}
diff --git a/drivers/input/misc/vl53L0/src/vl53l0_api_core.c b/drivers/input/misc/vl53L0/src/vl53l0_api_core.c
new file mode 100644
index 000000000000..a04d0c4f5915
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l0_api_core.c
@@ -0,0 +1,2270 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of STMicroelectronics nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+ NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+ IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ ******************************************************************************/
+
+#include "vl53l0_api.h"
+#include "vl53l0_api_core.h"
+#include "vl53l0_api_calibration.h"
+
+
+#ifndef __KERNEL__
+#include <stdlib.h>
+#endif
+#define LOG_FUNCTION_START(fmt, ...) \
+	_LOG_FUNCTION_START(TRACE_MODULE_API, fmt, ##__VA_ARGS__)
+#define LOG_FUNCTION_END(status, ...) \
+	_LOG_FUNCTION_END(TRACE_MODULE_API, status, ##__VA_ARGS__)
+#define LOG_FUNCTION_END_FMT(status, fmt, ...) \
+	_LOG_FUNCTION_END_FMT(TRACE_MODULE_API, status, fmt, ##__VA_ARGS__)
+
+VL53L0_Error VL53L0_reverse_bytes(uint8_t *data, uint32_t size)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t tempData;
+	uint32_t mirrorIndex;
+	uint32_t middle = size/2;
+	uint32_t index;
+
+	for (index = 0; index < middle; index++) {
+		mirrorIndex		 = size - index - 1;
+		tempData		 = data[index];
+		data[index]		 = data[mirrorIndex];
+		data[mirrorIndex] = tempData;
+	}
+	return Status;
+}
+
+VL53L0_Error VL53L0_measurement_poll_for_completion(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t NewDataReady = 0;
+	uint32_t LoopNb;
+
+	LOG_FUNCTION_START("");
+
+	LoopNb = 0;
+
+	do {
+		Status = VL53L0_GetMeasurementDataReady(Dev, &NewDataReady);
+		if (Status != 0)
+			break; /* the error is set */
+
+		if (NewDataReady == 1)
+			break; /* done note that status == 0 */
+
+		LoopNb++;
+		if (LoopNb >= VL53L0_DEFAULT_MAX_LOOP) {
+			Status = VL53L0_ERROR_TIME_OUT;
+			break;
+		}
+
+		VL53L0_PollingDelay(Dev);
+	} while (1);
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+
+uint8_t VL53L0_decode_vcsel_period(uint8_t vcsel_period_reg)
+{
+	/*!
+	 * Converts the encoded VCSEL period register value into the real
+	 * period in PLL clocks
+	 */
+
+	uint8_t vcsel_period_pclks = 0;
+
+	vcsel_period_pclks = (vcsel_period_reg + 1) << 1;
+
+	return vcsel_period_pclks;
+}
+
+uint8_t VL53L0_encode_vcsel_period(uint8_t vcsel_period_pclks)
+{
+	/*!
+	 * Converts the encoded VCSEL period register value into the real period
+	 * in PLL clocks
+	 */
+
+	uint8_t vcsel_period_reg = 0;
+
+	vcsel_period_reg = (vcsel_period_pclks >> 1) - 1;
+
+	return vcsel_period_reg;
+}
+
+
+uint32_t VL53L0_isqrt(uint32_t num)
+{
+	/*
+	 * Implements an integer square root
+	 *
+	 * From: http://en.wikipedia.org/wiki/Methods_of_computing_square_roots
+	 */
+
+	uint32_t  res = 0;
+	uint32_t  bit = 1 << 30;
+	/* The second-to-top bit is set:
+	 *	1 << 14 for 16-bits, 1 << 30 for 32 bits
+	 */
+
+	 /* "bit" starts at the highest power of four <= the argument. */
+	while (bit > num)
+		bit >>= 2;
+
+
+	while (bit != 0) {
+		if (num >= res + bit) {
+			num -= res + bit;
+			res = (res >> 1) + bit;
+		} else
+			res >>= 1;
+
+		bit >>= 2;
+	}
+
+	return res;
+}
+
+
+uint32_t VL53L0_quadrature_sum(uint32_t a, uint32_t b)
+{
+	/*
+	 * Implements a quadrature sum
+	 *
+	 * rea = sqrt(a^2 + b^2)
+	 *
+	 * Trap overflow case max input value is 65535 (16-bit value)
+	 * as internal calc are 32-bit wide
+	 *
+	 * If overflow then seta output to maximum
+	 */
+	uint32_t  res = 0;
+
+	if (a > 65535 || b > 65535)
+		res = 65535;
+	else
+		res = VL53L0_isqrt(a * a + b * b);
+
+	return res;
+}
+
+
+VL53L0_Error VL53L0_device_read_strobe(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t strobe;
+	uint32_t LoopNb;
+
+	LOG_FUNCTION_START("");
+
+	Status |= VL53L0_WrByte(Dev, 0x83, 0x00);
+
+	/* polling
+	 * use timeout to avoid deadlock
+	 */
+	if (Status == VL53L0_ERROR_NONE) {
+		LoopNb = 0;
+		do {
+			Status = VL53L0_RdByte(Dev, 0x83, &strobe);
+			if ((strobe != 0x00) || Status != VL53L0_ERROR_NONE)
+				break;
+
+			LoopNb = LoopNb + 1;
+		} while (LoopNb < VL53L0_DEFAULT_MAX_LOOP);
+
+		if (LoopNb >= VL53L0_DEFAULT_MAX_LOOP)
+			Status = VL53L0_ERROR_TIME_OUT;
+
+	}
+
+	Status |= VL53L0_WrByte(Dev, 0x83, 0x01);
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
+
+VL53L0_Error VL53L0_get_info_from_device(VL53L0_DEV Dev, uint8_t option)
+{
+
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t byte;
+	uint32_t TmpDWord;
+	uint8_t ModuleId;
+	uint8_t Revision;
+	uint8_t ReferenceSpadCount = 0;
+	uint8_t ReferenceSpadType = 0;
+	uint32_t PartUIDUpper = 0;
+	uint32_t PartUIDLower = 0;
+	uint32_t OffsetFixed1104_mm = 0;
+	int16_t OffsetMicroMeters = 0;
+	uint32_t DistMeasTgtFixed1104_mm = 400 << 4;
+	uint32_t DistMeasFixed1104_400_mm = 0;
+	uint32_t SignalRateMeasFixed1104_400_mm = 0;
+	char ProductId[19];
+	char *ProductId_tmp;
+	uint8_t ReadDataFromDeviceDone;
+	FixPoint1616_t SignalRateMeasFixed400mmFix = 0;
+	uint8_t NvmRefGoodSpadMap[VL53L0_REF_SPAD_BUFFER_SIZE];
+	int i;
+
+
+	LOG_FUNCTION_START("");
+
+	ReadDataFromDeviceDone = VL53L0_GETDEVICESPECIFICPARAMETER(Dev,
+			ReadDataFromDeviceDone);
+
+	/* This access is done only once after that a GetDeviceInfo or
+	 * datainit is done
+	 */
+	if (ReadDataFromDeviceDone != 7) {
+
+		Status |= VL53L0_WrByte(Dev, 0x80, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x00, 0x00);
+
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x06);
+		Status |= VL53L0_RdByte(Dev, 0x83, &byte);
+		Status |= VL53L0_WrByte(Dev, 0x83, byte|4);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x07);
+		Status |= VL53L0_WrByte(Dev, 0x81, 0x01);
+
+		Status |= VL53L0_PollingDelay(Dev);
+
+		Status |= VL53L0_WrByte(Dev, 0x80, 0x01);
+
+		if (((option & 1) == 1) &&
+			((ReadDataFromDeviceDone & 1) == 0)) {
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x6b);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+			ReferenceSpadCount = (uint8_t)((TmpDWord >> 8) & 0x07f);
+			ReferenceSpadType  = (uint8_t)((TmpDWord >> 15) & 0x01);
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x24);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+
+			NvmRefGoodSpadMap[0] = (uint8_t)((TmpDWord >> 24)
+				& 0xff);
+			NvmRefGoodSpadMap[1] = (uint8_t)((TmpDWord >> 16)
+				& 0xff);
+			NvmRefGoodSpadMap[2] = (uint8_t)((TmpDWord >> 8)
+				& 0xff);
+			NvmRefGoodSpadMap[3] = (uint8_t)(TmpDWord & 0xff);
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x25);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+			NvmRefGoodSpadMap[4] = (uint8_t)((TmpDWord >> 24)
+				& 0xff);
+			NvmRefGoodSpadMap[5] = (uint8_t)((TmpDWord >> 16)
+				& 0xff);
+		}
+
+		if (((option & 2) == 2) &&
+			((ReadDataFromDeviceDone & 2) == 0)) {
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x02);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdByte(Dev, 0x90, &ModuleId);
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x7B);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdByte(Dev, 0x90, &Revision);
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x77);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+			ProductId[0] = (char)((TmpDWord >> 25) & 0x07f);
+			ProductId[1] = (char)((TmpDWord >> 18) & 0x07f);
+			ProductId[2] = (char)((TmpDWord >> 11) & 0x07f);
+			ProductId[3] = (char)((TmpDWord >> 4) & 0x07f);
+
+			byte = (uint8_t)((TmpDWord & 0x00f) << 3);
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x78);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+			ProductId[4] = (char)(byte +
+					((TmpDWord >> 29) & 0x07f));
+			ProductId[5] = (char)((TmpDWord >> 22) & 0x07f);
+			ProductId[6] = (char)((TmpDWord >> 15) & 0x07f);
+			ProductId[7] = (char)((TmpDWord >> 8) & 0x07f);
+			ProductId[8] = (char)((TmpDWord >> 1) & 0x07f);
+
+			byte = (uint8_t)((TmpDWord & 0x001) << 6);
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x79);
+
+			Status |= VL53L0_device_read_strobe(Dev);
+
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+			ProductId[9] = (char)(byte +
+					((TmpDWord >> 26) & 0x07f));
+			ProductId[10] = (char)((TmpDWord >> 19) & 0x07f);
+			ProductId[11] = (char)((TmpDWord >> 12) & 0x07f);
+			ProductId[12] = (char)((TmpDWord >> 5) & 0x07f);
+
+			byte = (uint8_t)((TmpDWord & 0x01f) << 2);
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x7A);
+
+			Status |= VL53L0_device_read_strobe(Dev);
+
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+			ProductId[13] = (char)(byte +
+					((TmpDWord >> 30) & 0x07f));
+			ProductId[14] = (char)((TmpDWord >> 23) & 0x07f);
+			ProductId[15] = (char)((TmpDWord >> 16) & 0x07f);
+			ProductId[16] = (char)((TmpDWord >> 9) & 0x07f);
+			ProductId[17] = (char)((TmpDWord >> 2) & 0x07f);
+			ProductId[18] = '\0';
+
+		}
+
+		if (((option & 4) == 4) &&
+			((ReadDataFromDeviceDone & 4) == 0)) {
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x7B);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &PartUIDUpper);
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x7C);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &PartUIDLower);
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x73);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+			SignalRateMeasFixed1104_400_mm = (TmpDWord &
+				0x0000000ff) << 8;
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x74);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+			SignalRateMeasFixed1104_400_mm |= ((TmpDWord &
+				0xff000000) >> 24);
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x75);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+			DistMeasFixed1104_400_mm = (TmpDWord & 0x0000000ff)
+							<< 8;
+
+			Status |= VL53L0_WrByte(Dev, 0x94, 0x76);
+			Status |= VL53L0_device_read_strobe(Dev);
+			Status |= VL53L0_RdDWord(Dev, 0x90, &TmpDWord);
+
+			DistMeasFixed1104_400_mm |= ((TmpDWord & 0xff000000)
+							>> 24);
+		}
+
+		Status |= VL53L0_WrByte(Dev, 0x81, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x06);
+		Status |= VL53L0_RdByte(Dev, 0x83, &byte);
+		Status |= VL53L0_WrByte(Dev, 0x83, byte&0xfb);
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x01);
+		Status |= VL53L0_WrByte(Dev, 0x00, 0x01);
+
+		Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+		Status |= VL53L0_WrByte(Dev, 0x80, 0x00);
+	}
+
+	if ((Status == VL53L0_ERROR_NONE) &&
+		(ReadDataFromDeviceDone != 7)) {
+		/* Assign to variable if status is ok */
+		if (((option & 1) == 1) &&
+			((ReadDataFromDeviceDone & 1) == 0)) {
+			VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+				ReferenceSpadCount, ReferenceSpadCount);
+
+			VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+				ReferenceSpadType, ReferenceSpadType);
+
+			for (i = 0; i < VL53L0_REF_SPAD_BUFFER_SIZE; i++) {
+				Dev->Data.SpadData.RefGoodSpadMap[i] =
+					NvmRefGoodSpadMap[i];
+			}
+		}
+
+		if (((option & 2) == 2) &&
+			((ReadDataFromDeviceDone & 2) == 0)) {
+			VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+					ModuleId, ModuleId);
+
+			VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+					Revision, Revision);
+
+			ProductId_tmp = VL53L0_GETDEVICESPECIFICPARAMETER(Dev,
+					ProductId);
+			VL53L0_COPYSTRING(ProductId_tmp, ProductId);
+
+		}
+
+		if (((option & 4) == 4) &&
+			((ReadDataFromDeviceDone & 4) == 0)) {
+			VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+						PartUIDUpper, PartUIDUpper);
+
+			VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+						PartUIDLower, PartUIDLower);
+
+			SignalRateMeasFixed400mmFix =
+				VL53L0_FIXPOINT97TOFIXPOINT1616(
+					SignalRateMeasFixed1104_400_mm);
+
+			VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+				SignalRateMeasFixed400mm,
+				SignalRateMeasFixed400mmFix);
+
+			OffsetMicroMeters = 0;
+			if (DistMeasFixed1104_400_mm != 0) {
+				OffsetFixed1104_mm =
+					DistMeasFixed1104_400_mm -
+					DistMeasTgtFixed1104_mm;
+				OffsetMicroMeters = (OffsetFixed1104_mm
+						* 1000) >> 4;
+				OffsetMicroMeters *= -1;
+			}
+
+			PALDevDataSet(Dev,
+				Part2PartOffsetAdjustmentNVMMicroMeter,
+				OffsetMicroMeters);
+		}
+		byte = (uint8_t)(ReadDataFromDeviceDone|option);
+		VL53L0_SETDEVICESPECIFICPARAMETER(Dev, ReadDataFromDeviceDone,
+				byte);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+
+uint32_t VL53L0_calc_macro_period_ps(VL53L0_DEV Dev, uint8_t vcsel_period_pclks)
+{
+	uint64_t PLL_period_ps;
+	uint32_t macro_period_vclks;
+	uint32_t macro_period_ps;
+
+	LOG_FUNCTION_START("");
+
+	/* The above calculation will produce rounding errors,
+	 *  therefore set fixed value
+	 */
+	PLL_period_ps = 1655;
+
+	macro_period_vclks = 2304;
+	macro_period_ps = (uint32_t)(macro_period_vclks
+			* vcsel_period_pclks * PLL_period_ps);
+
+	LOG_FUNCTION_END("");
+	return macro_period_ps;
+}
+
+uint16_t VL53L0_encode_timeout(uint32_t timeout_macro_clks)
+{
+	/*!
+	 * Encode timeout in macro periods in (LSByte * 2^MSByte) + 1 format
+	 */
+
+	uint16_t encoded_timeout = 0;
+	uint32_t ls_byte = 0;
+	uint16_t ms_byte = 0;
+
+	if (timeout_macro_clks > 0) {
+		ls_byte = timeout_macro_clks - 1;
+
+		while ((ls_byte & 0xFFFFFF00) > 0) {
+			ls_byte = ls_byte >> 1;
+			ms_byte++;
+		}
+
+		encoded_timeout = (ms_byte << 8)
+				+ (uint16_t) (ls_byte & 0x000000FF);
+	}
+
+	return encoded_timeout;
+
+}
+
+uint32_t VL53L0_decode_timeout(uint16_t encoded_timeout)
+{
+	/*!
+	 * Decode 16-bit timeout register value - format (LSByte * 2^MSByte) + 1
+	 */
+
+	uint32_t timeout_macro_clks = 0;
+
+	timeout_macro_clks = ((uint32_t) (encoded_timeout & 0x00FF)
+			<< (uint32_t) ((encoded_timeout & 0xFF00) >> 8)) + 1;
+
+	return timeout_macro_clks;
+}
+
+
+/* To convert ms into register value */
+uint32_t VL53L0_calc_timeout_mclks(VL53L0_DEV Dev,
+		uint32_t timeout_period_us,
+		uint8_t vcsel_period_pclks)
+{
+	uint32_t macro_period_ps;
+	uint32_t macro_period_ns;
+	uint32_t timeout_period_mclks = 0;
+
+	macro_period_ps = VL53L0_calc_macro_period_ps(Dev, vcsel_period_pclks);
+	macro_period_ns = (macro_period_ps + 500) / 1000;
+
+	timeout_period_mclks =
+		(uint32_t) (((timeout_period_us * 1000)
+		+ (macro_period_ns / 2)) / macro_period_ns);
+
+	return timeout_period_mclks;
+}
+
+/* To convert register value into us */
+uint32_t VL53L0_calc_timeout_us(VL53L0_DEV Dev,
+		uint16_t timeout_period_mclks,
+		uint8_t vcsel_period_pclks)
+{
+	uint32_t macro_period_ps;
+	uint32_t macro_period_ns;
+	uint32_t actual_timeout_period_us = 0;
+
+	macro_period_ps = VL53L0_calc_macro_period_ps(Dev, vcsel_period_pclks);
+	macro_period_ns = (macro_period_ps + 500) / 1000;
+
+	actual_timeout_period_us =
+		((timeout_period_mclks * macro_period_ns)
+		+ (macro_period_ns / 2)) / 1000;
+
+	return actual_timeout_period_us;
+}
+
+
+VL53L0_Error get_sequence_step_timeout(VL53L0_DEV Dev,
+				VL53L0_SequenceStepId SequenceStepId,
+				uint32_t *pTimeOutMicroSecs)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t CurrentVCSELPulsePeriodPClk;
+	uint8_t EncodedTimeOutByte = 0;
+	uint32_t TimeoutMicroSeconds = 0;
+	uint16_t PreRangeEncodedTimeOut = 0;
+	uint16_t MsrcTimeOutMClks;
+	uint16_t PreRangeTimeOutMClks;
+	uint16_t FinalRangeTimeOutMClks = 0;
+	uint16_t FinalRangeEncodedTimeOut;
+	VL53L0_SchedulerSequenceSteps_t SchedulerSequenceSteps;
+
+	if ((SequenceStepId == VL53L0_SEQUENCESTEP_TCC)	 ||
+		(SequenceStepId == VL53L0_SEQUENCESTEP_DSS)	 ||
+		(SequenceStepId == VL53L0_SEQUENCESTEP_MSRC)) {
+
+		Status = VL53L0_GetVcselPulsePeriod(Dev,
+					VL53L0_VCSEL_PERIOD_PRE_RANGE,
+					&CurrentVCSELPulsePeriodPClk);
+		if (Status == VL53L0_ERROR_NONE) {
+			Status = VL53L0_RdByte(Dev,
+					VL53L0_REG_MSRC_CONFIG_TIMEOUT_MACROP,
+					&EncodedTimeOutByte);
+		}
+		MsrcTimeOutMClks = VL53L0_decode_timeout(EncodedTimeOutByte);
+
+		TimeoutMicroSeconds = VL53L0_calc_timeout_us(Dev,
+						MsrcTimeOutMClks,
+						CurrentVCSELPulsePeriodPClk);
+	} else if (SequenceStepId == VL53L0_SEQUENCESTEP_PRE_RANGE) {
+		/* Retrieve PRE-RANGE VCSEL Period */
+		Status = VL53L0_GetVcselPulsePeriod(Dev,
+						VL53L0_VCSEL_PERIOD_PRE_RANGE,
+						&CurrentVCSELPulsePeriodPClk);
+
+		/* Retrieve PRE-RANGE Timeout in Macro periods (MCLKS) */
+		if (Status == VL53L0_ERROR_NONE) {
+
+			/* Retrieve PRE-RANGE VCSEL Period */
+			Status = VL53L0_GetVcselPulsePeriod(Dev,
+					VL53L0_VCSEL_PERIOD_PRE_RANGE,
+					&CurrentVCSELPulsePeriodPClk);
+
+			if (Status == VL53L0_ERROR_NONE) {
+				Status = VL53L0_RdWord(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_TIMEOUT_MACROP_HI,
+				&PreRangeEncodedTimeOut);
+			}
+
+			PreRangeTimeOutMClks = VL53L0_decode_timeout(
+					PreRangeEncodedTimeOut);
+
+			TimeoutMicroSeconds = VL53L0_calc_timeout_us(Dev,
+					PreRangeTimeOutMClks,
+					CurrentVCSELPulsePeriodPClk);
+		}
+	} else if (SequenceStepId == VL53L0_SEQUENCESTEP_FINAL_RANGE) {
+
+		VL53L0_GetSequenceStepEnables(Dev, &SchedulerSequenceSteps);
+		PreRangeTimeOutMClks = 0;
+
+		if (SchedulerSequenceSteps.PreRangeOn) {
+			/* Retrieve PRE-RANGE VCSEL Period */
+			Status = VL53L0_GetVcselPulsePeriod(Dev,
+				VL53L0_VCSEL_PERIOD_PRE_RANGE,
+				&CurrentVCSELPulsePeriodPClk);
+
+			/* Retrieve PRE-RANGE Timeout in Macro periods
+			 * (MCLKS)
+			 */
+			if (Status == VL53L0_ERROR_NONE) {
+				Status = VL53L0_RdWord(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_TIMEOUT_MACROP_HI,
+				&PreRangeEncodedTimeOut);
+				PreRangeTimeOutMClks = VL53L0_decode_timeout(
+						PreRangeEncodedTimeOut);
+			}
+		}
+
+		if (Status == VL53L0_ERROR_NONE) {
+			/* Retrieve FINAL-RANGE VCSEL Period */
+			Status = VL53L0_GetVcselPulsePeriod(Dev,
+					VL53L0_VCSEL_PERIOD_FINAL_RANGE,
+					&CurrentVCSELPulsePeriodPClk);
+		}
+
+		/* Retrieve FINAL-RANGE Timeout in Macro periods (MCLKS) */
+		if (Status == VL53L0_ERROR_NONE) {
+			Status = VL53L0_RdWord(Dev,
+				VL53L0_REG_FINAL_RANGE_CONFIG_TIMEOUT_MACROP_HI,
+				&FinalRangeEncodedTimeOut);
+			FinalRangeTimeOutMClks = VL53L0_decode_timeout(
+					FinalRangeEncodedTimeOut);
+		}
+
+		FinalRangeTimeOutMClks -= PreRangeTimeOutMClks;
+		TimeoutMicroSeconds = VL53L0_calc_timeout_us(Dev,
+						FinalRangeTimeOutMClks,
+						CurrentVCSELPulsePeriodPClk);
+	}
+
+	*pTimeOutMicroSecs = TimeoutMicroSeconds;
+
+	return Status;
+}
+
+
+VL53L0_Error set_sequence_step_timeout(VL53L0_DEV Dev,
+					VL53L0_SequenceStepId SequenceStepId,
+					uint32_t TimeOutMicroSecs)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t CurrentVCSELPulsePeriodPClk;
+	uint8_t MsrcEncodedTimeOut;
+	uint16_t PreRangeEncodedTimeOut;
+	uint16_t PreRangeTimeOutMClks;
+	uint16_t MsrcRangeTimeOutMClks;
+	uint16_t FinalRangeTimeOutMClks;
+	uint16_t FinalRangeEncodedTimeOut;
+	VL53L0_SchedulerSequenceSteps_t SchedulerSequenceSteps;
+
+	if ((SequenceStepId == VL53L0_SEQUENCESTEP_TCC)	 ||
+		(SequenceStepId == VL53L0_SEQUENCESTEP_DSS)	 ||
+		(SequenceStepId == VL53L0_SEQUENCESTEP_MSRC)) {
+
+		Status = VL53L0_GetVcselPulsePeriod(Dev,
+					VL53L0_VCSEL_PERIOD_PRE_RANGE,
+					&CurrentVCSELPulsePeriodPClk);
+
+		if (Status == VL53L0_ERROR_NONE) {
+			MsrcRangeTimeOutMClks = VL53L0_calc_timeout_mclks(Dev,
+					TimeOutMicroSecs,
+					(uint8_t)CurrentVCSELPulsePeriodPClk);
+
+			if (MsrcRangeTimeOutMClks > 256)
+				MsrcEncodedTimeOut = 255;
+			else
+				MsrcEncodedTimeOut =
+					(uint8_t)MsrcRangeTimeOutMClks - 1;
+
+			VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+				LastEncodedTimeout,
+				MsrcEncodedTimeOut);
+		}
+
+		if (Status == VL53L0_ERROR_NONE) {
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_MSRC_CONFIG_TIMEOUT_MACROP,
+				MsrcEncodedTimeOut);
+		}
+	} else {
+
+		if (SequenceStepId == VL53L0_SEQUENCESTEP_PRE_RANGE) {
+
+			if (Status == VL53L0_ERROR_NONE) {
+				Status = VL53L0_GetVcselPulsePeriod(Dev,
+						VL53L0_VCSEL_PERIOD_PRE_RANGE,
+						&CurrentVCSELPulsePeriodPClk);
+				PreRangeTimeOutMClks =
+					VL53L0_calc_timeout_mclks(Dev,
+					TimeOutMicroSecs,
+					(uint8_t)CurrentVCSELPulsePeriodPClk);
+				PreRangeEncodedTimeOut = VL53L0_encode_timeout(
+					PreRangeTimeOutMClks);
+
+				VL53L0_SETDEVICESPECIFICPARAMETER(Dev,
+					LastEncodedTimeout,
+					PreRangeEncodedTimeOut);
+			}
+
+			if (Status == VL53L0_ERROR_NONE) {
+				Status = VL53L0_WrWord(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_TIMEOUT_MACROP_HI,
+				PreRangeEncodedTimeOut);
+			}
+
+			if (Status == VL53L0_ERROR_NONE) {
+				VL53L0_SETDEVICESPECIFICPARAMETER(
+					Dev,
+					PreRangeTimeoutMicroSecs,
+					TimeOutMicroSecs);
+			}
+		} else if (SequenceStepId == VL53L0_SEQUENCESTEP_FINAL_RANGE) {
+
+			/* For the final range timeout, the pre-range timeout
+			 * must be added. To do this both final and pre-range
+			 * timeouts must be expressed in macro periods MClks
+			 * because they have different vcsel periods.
+			 */
+
+			VL53L0_GetSequenceStepEnables(Dev,
+					&SchedulerSequenceSteps);
+			PreRangeTimeOutMClks = 0;
+			if (SchedulerSequenceSteps.PreRangeOn) {
+
+				/* Retrieve PRE-RANGE VCSEL Period */
+				Status = VL53L0_GetVcselPulsePeriod(Dev,
+					VL53L0_VCSEL_PERIOD_PRE_RANGE,
+					&CurrentVCSELPulsePeriodPClk);
+
+				/* Retrieve PRE-RANGE Timeout in Macro periods
+				 * (MCLKS)
+				 */
+				if (Status == VL53L0_ERROR_NONE) {
+					Status = VL53L0_RdWord(Dev, 0x51,
+						&PreRangeEncodedTimeOut);
+					PreRangeTimeOutMClks =
+						VL53L0_decode_timeout(
+							PreRangeEncodedTimeOut);
+				}
+			}
+
+			/* Calculate FINAL RANGE Timeout in Macro Periods
+			 * (MCLKS) and add PRE-RANGE value
+			 */
+			if (Status == VL53L0_ERROR_NONE) {
+
+				Status = VL53L0_GetVcselPulsePeriod(Dev,
+						VL53L0_VCSEL_PERIOD_FINAL_RANGE,
+						&CurrentVCSELPulsePeriodPClk);
+			}
+			if (Status == VL53L0_ERROR_NONE) {
+
+				FinalRangeTimeOutMClks =
+					VL53L0_calc_timeout_mclks(Dev,
+					TimeOutMicroSecs,
+					(uint8_t) CurrentVCSELPulsePeriodPClk);
+
+				FinalRangeTimeOutMClks += PreRangeTimeOutMClks;
+
+				FinalRangeEncodedTimeOut =
+				VL53L0_encode_timeout(FinalRangeTimeOutMClks);
+
+				if (Status == VL53L0_ERROR_NONE) {
+					Status = VL53L0_WrWord(Dev, 0x71,
+					FinalRangeEncodedTimeOut);
+				}
+
+				if (Status == VL53L0_ERROR_NONE) {
+					VL53L0_SETDEVICESPECIFICPARAMETER(
+						Dev,
+						FinalRangeTimeoutMicroSecs,
+						TimeOutMicroSecs);
+				}
+			}
+		} else
+			Status = VL53L0_ERROR_INVALID_PARAMS;
+
+	}
+	return Status;
+}
+
+VL53L0_Error VL53L0_set_vcsel_pulse_period(VL53L0_DEV Dev,
+	VL53L0_VcselPeriod VcselPeriodType, uint8_t VCSELPulsePeriodPCLK)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t vcsel_period_reg;
+	uint8_t MinPreVcselPeriodPCLK = 12;
+	uint8_t MaxPreVcselPeriodPCLK = 18;
+	uint8_t MinFinalVcselPeriodPCLK = 8;
+	uint8_t MaxFinalVcselPeriodPCLK = 14;
+	uint32_t MeasurementTimingBudgetMicroSeconds;
+	uint32_t FinalRangeTimeoutMicroSeconds;
+	uint32_t PreRangeTimeoutMicroSeconds;
+	uint32_t MsrcTimeoutMicroSeconds;
+	uint8_t PhaseCalInt = 0;
+
+	/* Check if valid clock period requested */
+
+	if ((VCSELPulsePeriodPCLK % 2) != 0) {
+		/* Value must be an even number */
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	} else if (VcselPeriodType == VL53L0_VCSEL_PERIOD_PRE_RANGE &&
+		(VCSELPulsePeriodPCLK < MinPreVcselPeriodPCLK ||
+		VCSELPulsePeriodPCLK > MaxPreVcselPeriodPCLK)) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	} else if (VcselPeriodType == VL53L0_VCSEL_PERIOD_FINAL_RANGE &&
+		(VCSELPulsePeriodPCLK < MinFinalVcselPeriodPCLK ||
+		 VCSELPulsePeriodPCLK > MaxFinalVcselPeriodPCLK)) {
+
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	}
+
+	/* Apply specific settings for the requested clock period */
+
+	if (Status != VL53L0_ERROR_NONE)
+		return Status;
+
+
+	if (VcselPeriodType == VL53L0_VCSEL_PERIOD_PRE_RANGE) {
+
+		/* Set phase check limits */
+		if (VCSELPulsePeriodPCLK == 12) {
+
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_VALID_PHASE_HIGH,
+				0x18);
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_VALID_PHASE_LOW,
+				0x08);
+		} else if (VCSELPulsePeriodPCLK == 14) {
+
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_VALID_PHASE_HIGH,
+				0x30);
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_VALID_PHASE_LOW,
+				0x08);
+		} else if (VCSELPulsePeriodPCLK == 16) {
+
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_VALID_PHASE_HIGH,
+				0x40);
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_VALID_PHASE_LOW,
+				0x08);
+		} else if (VCSELPulsePeriodPCLK == 18) {
+
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_VALID_PHASE_HIGH,
+				0x50);
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_VALID_PHASE_LOW,
+				0x08);
+		}
+	} else if (VcselPeriodType == VL53L0_VCSEL_PERIOD_FINAL_RANGE) {
+
+		if (VCSELPulsePeriodPCLK == 8) {
+
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_FINAL_RANGE_CONFIG_VALID_PHASE_HIGH,
+				0x10);
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_FINAL_RANGE_CONFIG_VALID_PHASE_LOW,
+				0x08);
+
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_GLOBAL_CONFIG_VCSEL_WIDTH, 0x02);
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_ALGO_PHASECAL_CONFIG_TIMEOUT, 0x0C);
+
+			Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_ALGO_PHASECAL_LIM,
+				0x30);
+			Status |= VL53L0_WrByte(Dev, 0xff, 0x00);
+		} else if (VCSELPulsePeriodPCLK == 10) {
+
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_FINAL_RANGE_CONFIG_VALID_PHASE_HIGH,
+				0x28);
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_FINAL_RANGE_CONFIG_VALID_PHASE_LOW,
+				0x08);
+
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_GLOBAL_CONFIG_VCSEL_WIDTH, 0x03);
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_ALGO_PHASECAL_CONFIG_TIMEOUT, 0x09);
+
+			Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_ALGO_PHASECAL_LIM,
+				0x20);
+			Status |= VL53L0_WrByte(Dev, 0xff, 0x00);
+		} else if (VCSELPulsePeriodPCLK == 12) {
+
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_FINAL_RANGE_CONFIG_VALID_PHASE_HIGH,
+				0x38);
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_FINAL_RANGE_CONFIG_VALID_PHASE_LOW,
+				0x08);
+
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_GLOBAL_CONFIG_VCSEL_WIDTH, 0x03);
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_ALGO_PHASECAL_CONFIG_TIMEOUT, 0x08);
+
+			Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_ALGO_PHASECAL_LIM,
+				0x20);
+			Status |= VL53L0_WrByte(Dev, 0xff, 0x00);
+		} else if (VCSELPulsePeriodPCLK == 14) {
+
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_FINAL_RANGE_CONFIG_VALID_PHASE_HIGH,
+				0x048);
+			Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_FINAL_RANGE_CONFIG_VALID_PHASE_LOW,
+				0x08);
+
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_GLOBAL_CONFIG_VCSEL_WIDTH, 0x03);
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_ALGO_PHASECAL_CONFIG_TIMEOUT, 0x07);
+
+			Status |= VL53L0_WrByte(Dev, 0xff, 0x01);
+			Status |= VL53L0_WrByte(Dev,
+				VL53L0_REG_ALGO_PHASECAL_LIM,
+				0x20);
+			Status |= VL53L0_WrByte(Dev, 0xff, 0x00);
+		}
+	}
+
+
+	/* Re-calculate and apply timeouts, in macro periods */
+
+	if (Status == VL53L0_ERROR_NONE) {
+		vcsel_period_reg = VL53L0_encode_vcsel_period((uint8_t)
+			VCSELPulsePeriodPCLK);
+
+		/* When the VCSEL period for the pre or final range is changed,
+		* the corresponding timeout must be read from the device using
+		* the current VCSEL period, then the new VCSEL period can be
+		* applied. The timeout then must be written back to the device
+		* using the new VCSEL period.
+		*
+		* For the MSRC timeout, the same applies - this timeout being
+		* dependant on the pre-range vcsel period.
+		*/
+		switch (VcselPeriodType) {
+		case VL53L0_VCSEL_PERIOD_PRE_RANGE:
+			Status = get_sequence_step_timeout(Dev,
+				VL53L0_SEQUENCESTEP_PRE_RANGE,
+				&PreRangeTimeoutMicroSeconds);
+
+			if (Status == VL53L0_ERROR_NONE)
+				Status = get_sequence_step_timeout(Dev,
+					VL53L0_SEQUENCESTEP_MSRC,
+					&MsrcTimeoutMicroSeconds);
+
+			if (Status == VL53L0_ERROR_NONE)
+				Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_PRE_RANGE_CONFIG_VCSEL_PERIOD,
+					vcsel_period_reg);
+
+
+			if (Status == VL53L0_ERROR_NONE)
+				Status = set_sequence_step_timeout(Dev,
+					VL53L0_SEQUENCESTEP_PRE_RANGE,
+					PreRangeTimeoutMicroSeconds);
+
+
+			if (Status == VL53L0_ERROR_NONE)
+				Status = set_sequence_step_timeout(Dev,
+					VL53L0_SEQUENCESTEP_MSRC,
+					MsrcTimeoutMicroSeconds);
+
+			VL53L0_SETDEVICESPECIFICPARAMETER(
+				Dev,
+				PreRangeVcselPulsePeriod,
+				VCSELPulsePeriodPCLK);
+			break;
+		case VL53L0_VCSEL_PERIOD_FINAL_RANGE:
+			Status = get_sequence_step_timeout(Dev,
+				VL53L0_SEQUENCESTEP_FINAL_RANGE,
+				&FinalRangeTimeoutMicroSeconds);
+
+			if (Status == VL53L0_ERROR_NONE)
+				Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_FINAL_RANGE_CONFIG_VCSEL_PERIOD,
+					vcsel_period_reg);
+
+
+			if (Status == VL53L0_ERROR_NONE)
+				Status = set_sequence_step_timeout(Dev,
+					VL53L0_SEQUENCESTEP_FINAL_RANGE,
+					FinalRangeTimeoutMicroSeconds);
+
+			VL53L0_SETDEVICESPECIFICPARAMETER(
+				Dev,
+				FinalRangeVcselPulsePeriod,
+				VCSELPulsePeriodPCLK);
+			break;
+		default:
+			Status = VL53L0_ERROR_INVALID_PARAMS;
+		}
+	}
+
+	/* Finally, the timing budget must be re-applied */
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_GETPARAMETERFIELD(Dev,
+			MeasurementTimingBudgetMicroSeconds,
+			MeasurementTimingBudgetMicroSeconds);
+
+		Status = VL53L0_SetMeasurementTimingBudgetMicroSeconds(Dev,
+				MeasurementTimingBudgetMicroSeconds);
+	}
+
+	/* Perform the phase calibration. This is needed after changing on
+	 * vcsel period.
+	 * get_data_enable = 0, restore_config = 1
+	 */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_perform_phase_calibration(
+			Dev, &PhaseCalInt, 0, 1);
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_vcsel_pulse_period(VL53L0_DEV Dev,
+	VL53L0_VcselPeriod VcselPeriodType, uint8_t *pVCSELPulsePeriodPCLK)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t vcsel_period_reg;
+
+	switch (VcselPeriodType) {
+	case VL53L0_VCSEL_PERIOD_PRE_RANGE:
+		Status = VL53L0_RdByte(Dev,
+			VL53L0_REG_PRE_RANGE_CONFIG_VCSEL_PERIOD,
+			&vcsel_period_reg);
+	break;
+	case VL53L0_VCSEL_PERIOD_FINAL_RANGE:
+		Status = VL53L0_RdByte(Dev,
+			VL53L0_REG_FINAL_RANGE_CONFIG_VCSEL_PERIOD,
+			&vcsel_period_reg);
+	break;
+	default:
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	}
+
+	if (Status == VL53L0_ERROR_NONE)
+		*pVCSELPulsePeriodPCLK =
+			VL53L0_decode_vcsel_period(vcsel_period_reg);
+
+	return Status;
+}
+
+
+
+VL53L0_Error VL53L0_set_measurement_timing_budget_micro_seconds(VL53L0_DEV Dev,
+		uint32_t MeasurementTimingBudgetMicroSeconds)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint32_t FinalRangeTimingBudgetMicroSeconds;
+	VL53L0_SchedulerSequenceSteps_t SchedulerSequenceSteps;
+	uint32_t MsrcDccTccTimeoutMicroSeconds	= 2000;
+	uint32_t StartOverheadMicroSeconds		= 1320;
+	uint32_t EndOverheadMicroSeconds		= 960;
+	uint32_t MsrcOverheadMicroSeconds		= 660;
+	uint32_t TccOverheadMicroSeconds		= 590;
+	uint32_t DssOverheadMicroSeconds		= 690;
+	uint32_t PreRangeOverheadMicroSeconds	= 660;
+	uint32_t FinalRangeOverheadMicroSeconds = 550;
+	uint32_t PreRangeTimeoutMicroSeconds	= 0;
+	uint32_t cMinTimingBudgetMicroSeconds	= 20000;
+	uint32_t SubTimeout = 0;
+
+	LOG_FUNCTION_START("");
+
+	if (MeasurementTimingBudgetMicroSeconds
+			< cMinTimingBudgetMicroSeconds) {
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+		return Status;
+	}
+
+	FinalRangeTimingBudgetMicroSeconds =
+		MeasurementTimingBudgetMicroSeconds -
+		(StartOverheadMicroSeconds + EndOverheadMicroSeconds);
+
+	Status = VL53L0_GetSequenceStepEnables(Dev, &SchedulerSequenceSteps);
+
+	if (Status == VL53L0_ERROR_NONE &&
+		(SchedulerSequenceSteps.TccOn  ||
+		SchedulerSequenceSteps.MsrcOn ||
+		SchedulerSequenceSteps.DssOn)) {
+
+		/* TCC, MSRC and DSS all share the same timeout */
+		Status = get_sequence_step_timeout(Dev,
+					VL53L0_SEQUENCESTEP_MSRC,
+					&MsrcDccTccTimeoutMicroSeconds);
+
+		/* Subtract the TCC, MSRC and DSS timeouts if they are
+		 * enabled.
+		 */
+
+		if (Status != VL53L0_ERROR_NONE)
+			return Status;
+
+		/* TCC */
+		if (SchedulerSequenceSteps.TccOn) {
+
+			SubTimeout = MsrcDccTccTimeoutMicroSeconds
+				+ TccOverheadMicroSeconds;
+
+			if (SubTimeout <
+				FinalRangeTimingBudgetMicroSeconds) {
+				FinalRangeTimingBudgetMicroSeconds -=
+							SubTimeout;
+			} else {
+				/* Requested timeout too big. */
+				Status = VL53L0_ERROR_INVALID_PARAMS;
+			}
+		}
+
+		if (Status != VL53L0_ERROR_NONE) {
+			LOG_FUNCTION_END(Status);
+			return Status;
+		}
+
+		/* DSS */
+		if (SchedulerSequenceSteps.DssOn) {
+
+			SubTimeout = 2 * (MsrcDccTccTimeoutMicroSeconds +
+				DssOverheadMicroSeconds);
+
+			if (SubTimeout < FinalRangeTimingBudgetMicroSeconds) {
+				FinalRangeTimingBudgetMicroSeconds
+							-= SubTimeout;
+			} else {
+				/* Requested timeout too big. */
+				Status = VL53L0_ERROR_INVALID_PARAMS;
+			}
+		} else if (SchedulerSequenceSteps.MsrcOn) {
+			/* MSRC */
+			SubTimeout = MsrcDccTccTimeoutMicroSeconds +
+						MsrcOverheadMicroSeconds;
+
+			if (SubTimeout < FinalRangeTimingBudgetMicroSeconds) {
+				FinalRangeTimingBudgetMicroSeconds
+							-= SubTimeout;
+			} else {
+				/* Requested timeout too big. */
+				Status = VL53L0_ERROR_INVALID_PARAMS;
+			}
+		}
+
+	}
+
+	if (Status != VL53L0_ERROR_NONE) {
+		LOG_FUNCTION_END(Status);
+		return Status;
+	}
+
+	if (SchedulerSequenceSteps.PreRangeOn) {
+
+		/* Subtract the Pre-range timeout if enabled. */
+
+		Status = get_sequence_step_timeout(Dev,
+				VL53L0_SEQUENCESTEP_PRE_RANGE,
+				&PreRangeTimeoutMicroSeconds);
+
+		SubTimeout = PreRangeTimeoutMicroSeconds +
+				PreRangeOverheadMicroSeconds;
+
+		if (SubTimeout < FinalRangeTimingBudgetMicroSeconds) {
+			FinalRangeTimingBudgetMicroSeconds -= SubTimeout;
+		} else {
+			/* Requested timeout too big. */
+			Status = VL53L0_ERROR_INVALID_PARAMS;
+		}
+	}
+
+
+	if (Status == VL53L0_ERROR_NONE &&
+		SchedulerSequenceSteps.FinalRangeOn) {
+
+		FinalRangeTimingBudgetMicroSeconds -=
+				FinalRangeOverheadMicroSeconds;
+
+		/* Final Range Timeout
+		* Note that the final range timeout is determined by the timing
+		* budget and the sum of all other timeouts within the sequence.
+		* If there is no room for the final range timeout, then an error
+		* will be set. Otherwise the remaining time will be applied to
+		* the final range.
+		*/
+		Status = set_sequence_step_timeout(Dev,
+			   VL53L0_SEQUENCESTEP_FINAL_RANGE,
+			   FinalRangeTimingBudgetMicroSeconds);
+
+		VL53L0_SETPARAMETERFIELD(Dev,
+			   MeasurementTimingBudgetMicroSeconds,
+			   MeasurementTimingBudgetMicroSeconds);
+	}
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_measurement_timing_budget_micro_seconds(VL53L0_DEV Dev,
+		uint32_t *pMeasurementTimingBudgetMicroSeconds)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_SchedulerSequenceSteps_t SchedulerSequenceSteps;
+	uint32_t FinalRangeTimeoutMicroSeconds;
+	uint32_t MsrcDccTccTimeoutMicroSeconds	= 2000;
+	uint32_t StartOverheadMicroSeconds		= 1910;
+	uint32_t EndOverheadMicroSeconds		= 960;
+	uint32_t MsrcOverheadMicroSeconds		= 660;
+	uint32_t TccOverheadMicroSeconds		= 590;
+	uint32_t DssOverheadMicroSeconds		= 690;
+	uint32_t PreRangeOverheadMicroSeconds	= 660;
+	uint32_t FinalRangeOverheadMicroSeconds = 550;
+	uint32_t PreRangeTimeoutMicroSeconds	= 0;
+
+	LOG_FUNCTION_START("");
+
+	/* Start and end overhead times always present */
+	*pMeasurementTimingBudgetMicroSeconds
+		= StartOverheadMicroSeconds + EndOverheadMicroSeconds;
+
+	Status = VL53L0_GetSequenceStepEnables(Dev, &SchedulerSequenceSteps);
+
+	if (Status != VL53L0_ERROR_NONE) {
+		LOG_FUNCTION_END(Status);
+		return Status;
+	}
+
+
+	if (SchedulerSequenceSteps.TccOn  ||
+		SchedulerSequenceSteps.MsrcOn ||
+		SchedulerSequenceSteps.DssOn) {
+
+		Status = get_sequence_step_timeout(Dev,
+				VL53L0_SEQUENCESTEP_MSRC,
+				&MsrcDccTccTimeoutMicroSeconds);
+
+		if (Status == VL53L0_ERROR_NONE) {
+			if (SchedulerSequenceSteps.TccOn) {
+				*pMeasurementTimingBudgetMicroSeconds +=
+					MsrcDccTccTimeoutMicroSeconds +
+					TccOverheadMicroSeconds;
+			}
+
+			if (SchedulerSequenceSteps.DssOn) {
+				*pMeasurementTimingBudgetMicroSeconds +=
+				2 * (MsrcDccTccTimeoutMicroSeconds +
+					DssOverheadMicroSeconds);
+			} else if (SchedulerSequenceSteps.MsrcOn) {
+				*pMeasurementTimingBudgetMicroSeconds +=
+					MsrcDccTccTimeoutMicroSeconds +
+					MsrcOverheadMicroSeconds;
+			}
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (SchedulerSequenceSteps.PreRangeOn) {
+			Status = get_sequence_step_timeout(Dev,
+				VL53L0_SEQUENCESTEP_PRE_RANGE,
+				&PreRangeTimeoutMicroSeconds);
+			*pMeasurementTimingBudgetMicroSeconds +=
+				PreRangeTimeoutMicroSeconds +
+				PreRangeOverheadMicroSeconds;
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (SchedulerSequenceSteps.FinalRangeOn) {
+			Status = get_sequence_step_timeout(Dev,
+					VL53L0_SEQUENCESTEP_FINAL_RANGE,
+					&FinalRangeTimeoutMicroSeconds);
+			*pMeasurementTimingBudgetMicroSeconds +=
+				(FinalRangeTimeoutMicroSeconds +
+				FinalRangeOverheadMicroSeconds);
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_SETPARAMETERFIELD(Dev,
+			MeasurementTimingBudgetMicroSeconds,
+			*pMeasurementTimingBudgetMicroSeconds);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+
+
+VL53L0_Error VL53L0_load_tuning_settings(VL53L0_DEV Dev,
+		uint8_t *pTuningSettingBuffer)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int i;
+	int Index;
+	uint8_t msb;
+	uint8_t lsb;
+	uint8_t SelectParam;
+	uint8_t NumberOfWrites;
+	uint8_t Address;
+	uint8_t localBuffer[4]; /* max */
+	uint16_t Temp16;
+
+	LOG_FUNCTION_START("");
+
+	Index = 0;
+
+	while ((*(pTuningSettingBuffer + Index) != 0) &&
+			(Status == VL53L0_ERROR_NONE)) {
+		NumberOfWrites = *(pTuningSettingBuffer + Index);
+		Index++;
+		if (NumberOfWrites == 0xFF) {
+			/* internal parameters */
+			SelectParam = *(pTuningSettingBuffer + Index);
+			Index++;
+			switch (SelectParam) {
+			case 0: /* uint16_t SigmaEstRefArray -> 2 bytes */
+				msb = *(pTuningSettingBuffer + Index);
+				Index++;
+				lsb = *(pTuningSettingBuffer + Index);
+				Index++;
+				Temp16 = VL53L0_MAKEUINT16(lsb, msb);
+				PALDevDataSet(Dev, SigmaEstRefArray, Temp16);
+				break;
+			case 1: /* uint16_t SigmaEstEffPulseWidth -> 2 bytes */
+				msb = *(pTuningSettingBuffer + Index);
+				Index++;
+				lsb = *(pTuningSettingBuffer + Index);
+				Index++;
+				Temp16 = VL53L0_MAKEUINT16(lsb, msb);
+				PALDevDataSet(Dev, SigmaEstEffPulseWidth,
+					Temp16);
+				break;
+			case 2: /* uint16_t SigmaEstEffAmbWidth -> 2 bytes */
+				msb = *(pTuningSettingBuffer + Index);
+				Index++;
+				lsb = *(pTuningSettingBuffer + Index);
+				Index++;
+				Temp16 = VL53L0_MAKEUINT16(lsb, msb);
+				PALDevDataSet(Dev, SigmaEstEffAmbWidth, Temp16);
+				break;
+			case 3: /* uint16_t targetRefRate -> 2 bytes */
+				msb = *(pTuningSettingBuffer + Index);
+				Index++;
+				lsb = *(pTuningSettingBuffer + Index);
+				Index++;
+				Temp16 = VL53L0_MAKEUINT16(lsb, msb);
+				PALDevDataSet(Dev, targetRefRate, Temp16);
+				break;
+			default: /* invalid parameter */
+				Status = VL53L0_ERROR_INVALID_PARAMS;
+			}
+
+		} else if (NumberOfWrites <= 4) {
+			Address = *(pTuningSettingBuffer + Index);
+			Index++;
+
+			for (i = 0; i < NumberOfWrites; i++) {
+				localBuffer[i] = *(pTuningSettingBuffer +
+							Index);
+				Index++;
+			}
+
+			Status = VL53L0_WriteMulti(Dev, Address, localBuffer,
+					NumberOfWrites);
+
+		} else {
+			Status = VL53L0_ERROR_INVALID_PARAMS;
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_total_xtalk_rate(VL53L0_DEV Dev,
+	VL53L0_RangingMeasurementData_t *pRangingMeasurementData,
+	FixPoint1616_t *ptotal_xtalk_rate_mcps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	uint8_t xtalkCompEnable;
+	FixPoint1616_t totalXtalkMegaCps;
+	FixPoint1616_t xtalkPerSpadMegaCps;
+
+	*ptotal_xtalk_rate_mcps = 0;
+
+	Status = VL53L0_GetXTalkCompensationEnable(Dev, &xtalkCompEnable);
+	if (Status == VL53L0_ERROR_NONE) {
+
+		if (xtalkCompEnable) {
+
+			VL53L0_GETPARAMETERFIELD(
+				Dev,
+				XTalkCompensationRateMegaCps,
+				xtalkPerSpadMegaCps);
+
+			/* FixPoint1616 * FixPoint 8:8 = FixPoint0824 */
+			totalXtalkMegaCps =
+				pRangingMeasurementData->EffectiveSpadRtnCount *
+				xtalkPerSpadMegaCps;
+
+			/* FixPoint0824 >> 8 = FixPoint1616 */
+			*ptotal_xtalk_rate_mcps =
+				(totalXtalkMegaCps + 0x80) >> 8;
+		}
+	}
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_total_signal_rate(VL53L0_DEV Dev,
+	VL53L0_RangingMeasurementData_t *pRangingMeasurementData,
+	FixPoint1616_t *ptotal_signal_rate_mcps)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	FixPoint1616_t totalXtalkMegaCps;
+
+	LOG_FUNCTION_START("");
+
+	*ptotal_signal_rate_mcps =
+		pRangingMeasurementData->SignalRateRtnMegaCps;
+
+	Status = VL53L0_get_total_xtalk_rate(
+		Dev, pRangingMeasurementData, &totalXtalkMegaCps);
+
+	if (Status == VL53L0_ERROR_NONE)
+		*ptotal_signal_rate_mcps += totalXtalkMegaCps;
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_calc_dmax(
+	VL53L0_DEV Dev,
+	FixPoint1616_t totalSignalRate_mcps,
+	FixPoint1616_t totalCorrSignalRate_mcps,
+	FixPoint1616_t pwMult,
+	uint32_t sigmaEstimateP1,
+	FixPoint1616_t sigmaEstimateP2,
+	uint32_t peakVcselDuration_us,
+	uint32_t *pdmax_mm)
+{
+	const uint32_t cSigmaLimit		= 18;
+	const FixPoint1616_t cSignalLimit	= 0x4000; /* 0.25 */
+	const FixPoint1616_t cSigmaEstRef	= 0x00000042; /* 0.001 */
+	const uint32_t cAmbEffWidthSigmaEst_ns = 6;
+	const uint32_t cAmbEffWidthDMax_ns	   = 7;
+	uint32_t dmaxCalRange_mm;
+	FixPoint1616_t dmaxCalSignalRateRtn_mcps;
+	FixPoint1616_t minSignalNeeded;
+	FixPoint1616_t minSignalNeeded_p1;
+	FixPoint1616_t minSignalNeeded_p2;
+	FixPoint1616_t minSignalNeeded_p3;
+	FixPoint1616_t minSignalNeeded_p4;
+	FixPoint1616_t sigmaLimitTmp;
+	FixPoint1616_t sigmaEstSqTmp;
+	FixPoint1616_t signalLimitTmp;
+	FixPoint1616_t SignalAt0mm;
+	FixPoint1616_t dmaxDark;
+	FixPoint1616_t dmaxAmbient;
+	FixPoint1616_t dmaxDarkTmp;
+	FixPoint1616_t sigmaEstP2Tmp;
+	uint32_t signalRateTemp_mcps;
+
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	dmaxCalRange_mm =
+		PALDevDataGet(Dev, DmaxCalRangeMilliMeter);
+
+	dmaxCalSignalRateRtn_mcps =
+		PALDevDataGet(Dev, DmaxCalSignalRateRtnMegaCps);
+
+	/* uint32 * FixPoint1616 = FixPoint1616 */
+	SignalAt0mm = dmaxCalRange_mm * dmaxCalSignalRateRtn_mcps;
+
+	/* FixPoint1616 >> 8 = FixPoint2408 */
+	SignalAt0mm = (SignalAt0mm + 0x80) >> 8;
+	SignalAt0mm *= dmaxCalRange_mm;
+
+	minSignalNeeded_p1 = 0;
+	if (totalCorrSignalRate_mcps > 0) {
+
+		/* Shift by 10 bits to increase resolution prior to the
+		 * division
+		 */
+		signalRateTemp_mcps = totalSignalRate_mcps << 10;
+
+		/* Add rounding value prior to division */
+		minSignalNeeded_p1 = signalRateTemp_mcps +
+			(totalCorrSignalRate_mcps/2);
+
+		/* FixPoint0626/FixPoint1616 = FixPoint2210 */
+		minSignalNeeded_p1 /= totalCorrSignalRate_mcps;
+
+		/* Apply a factored version of the speed of light.
+		 * Correction to be applied at the end
+		 */
+		minSignalNeeded_p1 *= 3;
+
+		/* FixPoint2210 * FixPoint2210 = FixPoint1220 */
+		minSignalNeeded_p1 *= minSignalNeeded_p1;
+
+		/* FixPoint1220 >> 16 = FixPoint2804 */
+		minSignalNeeded_p1 = (minSignalNeeded_p1 + 0x8000) >> 16;
+	}
+
+	minSignalNeeded_p2 = pwMult * sigmaEstimateP1;
+
+	/* FixPoint1616 >> 16 =	 uint32 */
+	minSignalNeeded_p2 = (minSignalNeeded_p2 + 0x8000) >> 16;
+
+	/* uint32 * uint32	=  uint32 */
+	minSignalNeeded_p2 *= minSignalNeeded_p2;
+
+	/* Check sigmaEstimateP2
+	 * If this value is too high there is not enough signal rate
+	 * to calculate dmax value so set a suitable value to ensure
+	 * a very small dmax.
+	 */
+	sigmaEstP2Tmp = (sigmaEstimateP2 + 0x8000) >> 16;
+	sigmaEstP2Tmp = (sigmaEstP2Tmp + cAmbEffWidthSigmaEst_ns/2)/
+		cAmbEffWidthSigmaEst_ns;
+	sigmaEstP2Tmp *= cAmbEffWidthDMax_ns;
+
+	if (sigmaEstP2Tmp > 0xffff) {
+		minSignalNeeded_p3 = 0xfff00000;
+	} else {
+
+		/* DMAX uses a different ambient width from sigma, so apply
+		 * correction.
+		 * Perform division before multiplication to prevent overflow.
+		 */
+		sigmaEstimateP2 = (sigmaEstimateP2 + cAmbEffWidthSigmaEst_ns/2)/
+			cAmbEffWidthSigmaEst_ns;
+		sigmaEstimateP2 *= cAmbEffWidthDMax_ns;
+
+		/* FixPoint1616 >> 16 = uint32 */
+		minSignalNeeded_p3 = (sigmaEstimateP2 + 0x8000) >> 16;
+
+		minSignalNeeded_p3 *= minSignalNeeded_p3;
+
+	}
+
+	/* FixPoint1814 / uint32 = FixPoint1814 */
+	sigmaLimitTmp = ((cSigmaLimit << 14) + 500) / 1000;
+
+	/* FixPoint1814 * FixPoint1814 = FixPoint3628 := FixPoint0428 */
+	sigmaLimitTmp *= sigmaLimitTmp;
+
+	/* FixPoint1616 * FixPoint1616 = FixPoint3232 */
+	sigmaEstSqTmp = cSigmaEstRef * cSigmaEstRef;
+
+	/* FixPoint3232 >> 4 = FixPoint0428 */
+	sigmaEstSqTmp = (sigmaEstSqTmp + 0x08) >> 4;
+
+	/* FixPoint0428 - FixPoint0428	= FixPoint0428 */
+	sigmaLimitTmp -=  sigmaEstSqTmp;
+
+	/* uint32_t * FixPoint0428 = FixPoint0428 */
+	minSignalNeeded_p4 = 4 * 12 * sigmaLimitTmp;
+
+	/* FixPoint0428 >> 14 = FixPoint1814 */
+	minSignalNeeded_p4 = (minSignalNeeded_p4 + 0x2000) >> 14;
+
+	/* uint32 + uint32 = uint32 */
+	minSignalNeeded = (minSignalNeeded_p2 + minSignalNeeded_p3);
+
+	/* uint32 / uint32 = uint32 */
+	minSignalNeeded += (peakVcselDuration_us/2);
+	minSignalNeeded /= peakVcselDuration_us;
+
+	/* uint32 << 14 = FixPoint1814 */
+	minSignalNeeded <<= 14;
+
+	/* FixPoint1814 / FixPoint1814 = uint32 */
+	minSignalNeeded += (minSignalNeeded_p4/2);
+	minSignalNeeded /= minSignalNeeded_p4;
+
+	/* FixPoint3200 * FixPoint2804 := FixPoint2804*/
+	minSignalNeeded *= minSignalNeeded_p1;
+
+	/* Apply correction by dividing by 1000000.
+	 * This assumes 10E16 on the numerator of the equation
+	 * and 10E-22 on the denominator.
+	 * We do this because 32bit fix point calculation can't
+	 * handle the larger and smaller elements of this equation,
+	 * i.e. speed of light and pulse widths.
+	 */
+	minSignalNeeded = (minSignalNeeded + 500) / 1000;
+	minSignalNeeded <<= 4;
+
+	minSignalNeeded = (minSignalNeeded + 500) / 1000;
+
+	/* FixPoint1616 >> 8 = FixPoint2408 */
+	signalLimitTmp = (cSignalLimit + 0x80) >> 8;
+
+	/* FixPoint2408/FixPoint2408 = uint32 */
+	if (signalLimitTmp != 0)
+		dmaxDarkTmp = (SignalAt0mm + (signalLimitTmp / 2))
+			/ signalLimitTmp;
+	else
+		dmaxDarkTmp = 0;
+
+	dmaxDark = VL53L0_isqrt(dmaxDarkTmp);
+
+	/* FixPoint2408/FixPoint2408 = uint32 */
+	if (minSignalNeeded != 0)
+		dmaxAmbient = (SignalAt0mm + minSignalNeeded/2)
+			/ minSignalNeeded;
+	else
+		dmaxAmbient = 0;
+
+	dmaxAmbient = VL53L0_isqrt(dmaxAmbient);
+
+	*pdmax_mm = dmaxDark;
+	if (dmaxDark > dmaxAmbient)
+		*pdmax_mm = dmaxAmbient;
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_calc_sigma_estimate(VL53L0_DEV Dev,
+	VL53L0_RangingMeasurementData_t *pRangingMeasurementData,
+	FixPoint1616_t *pSigmaEstimate,
+	uint32_t *pDmax_mm)
+{
+	/* Expressed in 100ths of a ns, i.e. centi-ns */
+	const uint32_t cPulseEffectiveWidth_centi_ns   = 800;
+	/* Expressed in 100ths of a ns, i.e. centi-ns */
+	const uint32_t cAmbientEffectiveWidth_centi_ns = 600;
+	const FixPoint1616_t cSigmaEstRef	= 0x00000042; /* 0.001 */
+	const uint32_t cVcselPulseWidth_ps	= 4700; /* pico secs */
+	const FixPoint1616_t cSigmaEstMax	= 0x028F87AE;
+	const FixPoint1616_t cSigmaEstRtnMax	= 0xF000;
+	const FixPoint1616_t cAmbToSignalRatioMax = 0xF0000000/
+		cAmbientEffectiveWidth_centi_ns;
+	/* Time Of Flight per mm (6.6 pico secs) */
+	const FixPoint1616_t cTOF_per_mm_ps		= 0x0006999A;
+	const uint32_t c16BitRoundingParam		= 0x00008000;
+	const FixPoint1616_t cMaxXTalk_kcps		= 0x00320000;
+	const uint32_t cPllPeriod_ps			= 1655;
+
+	uint32_t vcselTotalEventsRtn;
+	uint32_t finalRangeTimeoutMicroSecs;
+	uint32_t preRangeTimeoutMicroSecs;
+	FixPoint1616_t sigmaEstimateP1;
+	FixPoint1616_t sigmaEstimateP2;
+	FixPoint1616_t sigmaEstimateP3;
+	FixPoint1616_t deltaT_ps;
+	FixPoint1616_t pwMult;
+	FixPoint1616_t sigmaEstRtn;
+	FixPoint1616_t sigmaEstimate;
+	FixPoint1616_t xTalkCorrection;
+	FixPoint1616_t ambientRate_kcps;
+	FixPoint1616_t peakSignalRate_kcps;
+	FixPoint1616_t xTalkCompRate_mcps;
+	uint32_t xTalkCompRate_kcps;
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	FixPoint1616_t diff1_mcps;
+	FixPoint1616_t diff2_mcps;
+	FixPoint1616_t sqr1;
+	FixPoint1616_t sqr2;
+	FixPoint1616_t sqrSum;
+	FixPoint1616_t sqrtResult_centi_ns;
+	FixPoint1616_t sqrtResult;
+	FixPoint1616_t totalSignalRate_mcps;
+	FixPoint1616_t correctedSignalRate_mcps;
+	uint32_t vcselWidth;
+	uint32_t finalRangeMacroPCLKS;
+	uint32_t preRangeMacroPCLKS;
+	uint32_t peakVcselDuration_us;
+	uint8_t finalRangeVcselPCLKS;
+	uint8_t preRangeVcselPCLKS;
+	/*! \addtogroup calc_sigma_estimate
+	 * @{
+	 *
+	 * Estimates the range sigma based on the
+	 *
+	 *	- vcsel_rate_kcps
+	 *	- ambient_rate_kcps
+	 *	- signal_total_events
+	 *	- xtalk_rate
+	 *
+	 * and the following parameters
+	 *
+	 *	- SigmaEstRefArray
+	 *	- SigmaEstEffPulseWidth
+	 *	- SigmaEstEffAmbWidth
+	 */
+
+	LOG_FUNCTION_START("");
+
+	VL53L0_GETPARAMETERFIELD(Dev, XTalkCompensationRateMegaCps,
+			xTalkCompRate_mcps);
+
+	/*
+	 * We work in kcps rather than mcps as this helps keep within the
+	 * confines of the 32 Fix1616 type.
+	 */
+
+	ambientRate_kcps =
+		(pRangingMeasurementData->AmbientRateRtnMegaCps * 1000) >> 16;
+
+	correctedSignalRate_mcps =
+		pRangingMeasurementData->SignalRateRtnMegaCps;
+
+
+	Status = VL53L0_get_total_signal_rate(
+		Dev, pRangingMeasurementData, &totalSignalRate_mcps);
+	Status = VL53L0_get_total_xtalk_rate(
+		Dev, pRangingMeasurementData, &xTalkCompRate_mcps);
+
+
+	/* Signal rate measurement provided by device is the
+	 * peak signal rate, not average.
+	 */
+	peakSignalRate_kcps = (totalSignalRate_mcps * 1000);
+	peakSignalRate_kcps = (peakSignalRate_kcps + 0x8000) >> 16;
+
+	xTalkCompRate_kcps = xTalkCompRate_mcps * 1000;
+
+	if (xTalkCompRate_kcps > cMaxXTalk_kcps)
+		xTalkCompRate_kcps = cMaxXTalk_kcps;
+
+	if (Status == VL53L0_ERROR_NONE) {
+
+		/* Calculate final range macro periods */
+		finalRangeTimeoutMicroSecs = VL53L0_GETDEVICESPECIFICPARAMETER(
+			Dev, FinalRangeTimeoutMicroSecs);
+
+		finalRangeVcselPCLKS = VL53L0_GETDEVICESPECIFICPARAMETER(
+			Dev, FinalRangeVcselPulsePeriod);
+
+		finalRangeMacroPCLKS = VL53L0_calc_timeout_mclks(
+			Dev, finalRangeTimeoutMicroSecs, finalRangeVcselPCLKS);
+
+		/* Calculate pre-range macro periods */
+		preRangeTimeoutMicroSecs = VL53L0_GETDEVICESPECIFICPARAMETER(
+			Dev, PreRangeTimeoutMicroSecs);
+
+		preRangeVcselPCLKS = VL53L0_GETDEVICESPECIFICPARAMETER(
+			Dev, PreRangeVcselPulsePeriod);
+
+		preRangeMacroPCLKS = VL53L0_calc_timeout_mclks(
+			Dev, preRangeTimeoutMicroSecs, preRangeVcselPCLKS);
+
+		vcselWidth = 3;
+		if (finalRangeVcselPCLKS == 8)
+			vcselWidth = 2;
+
+
+		peakVcselDuration_us = vcselWidth * 2048 *
+			(preRangeMacroPCLKS + finalRangeMacroPCLKS);
+		peakVcselDuration_us = (peakVcselDuration_us + 500)/1000;
+		peakVcselDuration_us *= cPllPeriod_ps;
+		peakVcselDuration_us = (peakVcselDuration_us + 500)/1000;
+
+		/* Fix1616 >> 8 = Fix2408 */
+		totalSignalRate_mcps = (totalSignalRate_mcps + 0x80) >> 8;
+
+		/* Fix2408 * uint32 = Fix2408 */
+		vcselTotalEventsRtn = totalSignalRate_mcps *
+			peakVcselDuration_us;
+
+		/* Fix2408 >> 8 = uint32 */
+		vcselTotalEventsRtn = (vcselTotalEventsRtn + 0x80) >> 8;
+
+		/* Fix2408 << 8 = Fix1616 = */
+		totalSignalRate_mcps <<= 8;
+	}
+
+	if (Status != VL53L0_ERROR_NONE) {
+		LOG_FUNCTION_END(Status);
+		return Status;
+	}
+
+	if (peakSignalRate_kcps == 0) {
+		*pSigmaEstimate = cSigmaEstMax;
+		PALDevDataSet(Dev, SigmaEstimate, cSigmaEstMax);
+		*pDmax_mm = 0;
+	} else {
+		if (vcselTotalEventsRtn < 1)
+			vcselTotalEventsRtn = 1;
+
+		/*
+		 * Calculate individual components of the main equation -
+		 * replicating the equation implemented in the script
+		 * OpenAll_Ewok_ranging_data.jsl.
+		 *
+		 * sigmaEstimateP1 represents the effective pulse width, which
+		 * is a tuning parameter, rather than a real value.
+		 *
+		 * sigmaEstimateP2 represents the ambient/signal rate ratio
+		 * expressed as a multiple of the effective ambient width
+		 * (tuning parameter).
+		 *
+		 * sigmaEstimateP3 provides the signal event component, with the
+		 * knowledge that
+		 *	- Noise of a square pulse is 1/sqrt(12) of the pulse
+		 *	 width.
+		 *	- at 0Lux, sigma is proportional to
+		 *	  effectiveVcselPulseWidth/sqrt(12 * signalTotalEvents)
+		 *
+		 * deltaT_ps represents the time of flight in pico secs for the
+		 * current range measurement, using the "TOF per mm" constant
+		 * (in ps).
+		 */
+
+		sigmaEstimateP1 = cPulseEffectiveWidth_centi_ns;
+
+		/* ((FixPoint1616 << 16)* uint32)/uint32 = FixPoint1616 */
+		sigmaEstimateP2 = (ambientRate_kcps << 16)/peakSignalRate_kcps;
+		if (sigmaEstimateP2 > cAmbToSignalRatioMax) {
+			/* Clip to prevent overflow. Will ensure safe
+			 * max result.
+			 */
+			sigmaEstimateP2 = cAmbToSignalRatioMax;
+		}
+		sigmaEstimateP2 *= cAmbientEffectiveWidth_centi_ns;
+
+		sigmaEstimateP3 = 2 * VL53L0_isqrt(vcselTotalEventsRtn * 12);
+
+		/* uint32 * FixPoint1616 = FixPoint1616 */
+		deltaT_ps = pRangingMeasurementData->RangeMilliMeter *
+					cTOF_per_mm_ps;
+
+		/*
+		 * vcselRate - xtalkCompRate
+		 * (uint32 << 16) - FixPoint1616 = FixPoint1616.
+		 * Divide result by 1000 to convert to mcps.
+		 * 500 is added to ensure rounding when integer division
+		 * truncates.
+		 */
+		diff1_mcps = (((peakSignalRate_kcps << 16) -
+			xTalkCompRate_kcps) + 500)/1000;
+
+		/* vcselRate + xtalkCompRate */
+		diff2_mcps = (((peakSignalRate_kcps << 16) +
+			xTalkCompRate_kcps) + 500)/1000;
+
+		/* Shift by 8 bits to increase resolution prior to the
+		 * division
+		 */
+		diff1_mcps <<= 8;
+
+		/* FixPoint0824/FixPoint1616 = FixPoint2408 */
+		xTalkCorrection	 = abs(diff1_mcps/diff2_mcps);
+
+		/* FixPoint2408 << 8 = FixPoint1616 */
+		xTalkCorrection <<= 8;
+
+		/* FixPoint1616/uint32 = FixPoint1616 */
+		pwMult = deltaT_ps/cVcselPulseWidth_ps; /* smaller than 1.0f */
+
+		/*
+		 * FixPoint1616 * FixPoint1616 = FixPoint3232, however both
+		 * values are small enough such that32 bits will not be
+		 * exceeded.
+		 */
+		pwMult *= ((1 << 16) - xTalkCorrection);
+
+		/* (FixPoint3232 >> 16) = FixPoint1616 */
+		pwMult =  (pwMult + c16BitRoundingParam) >> 16;
+
+		/* FixPoint1616 + FixPoint1616 = FixPoint1616 */
+		pwMult += (1 << 16);
+
+		/*
+		 * At this point the value will be 1.xx, therefore if we square
+		 * the value this will exceed 32 bits. To address this perform
+		 * a single shift to the right before the multiplication.
+		 */
+		pwMult >>= 1;
+		/* FixPoint1715 * FixPoint1715 = FixPoint3430 */
+		pwMult = pwMult * pwMult;
+
+		/* (FixPoint3430 >> 14) = Fix1616 */
+		pwMult >>= 14;
+
+		/* FixPoint1616 * uint32 = FixPoint1616 */
+		sqr1 = pwMult * sigmaEstimateP1;
+
+		/* (FixPoint1616 >> 16) = FixPoint3200 */
+		sqr1 = (sqr1 + 0x8000) >> 16;
+
+		/* FixPoint3200 * FixPoint3200 = FixPoint6400 */
+		sqr1 *= sqr1;
+
+		sqr2 = sigmaEstimateP2;
+
+		/* (FixPoint1616 >> 16) = FixPoint3200 */
+		sqr2 = (sqr2 + 0x8000) >> 16;
+
+		/* FixPoint3200 * FixPoint3200 = FixPoint6400 */
+		sqr2 *= sqr2;
+
+		/* FixPoint64000 + FixPoint6400 = FixPoint6400 */
+		sqrSum = sqr1 + sqr2;
+
+		/* SQRT(FixPoin6400) = FixPoint3200 */
+		sqrtResult_centi_ns = VL53L0_isqrt(sqrSum);
+
+		/* (FixPoint3200 << 16) = FixPoint1616 */
+		sqrtResult_centi_ns <<= 16;
+
+		/*
+		 * Note that the Speed Of Light is expressed in um per 1E-10
+		 * seconds (2997) Therefore to get mm/ns we have to divide by
+		 * 10000
+		 */
+		sigmaEstRtn = (((sqrtResult_centi_ns+50)/100) /
+				sigmaEstimateP3);
+		sigmaEstRtn		 *= VL53L0_SPEED_OF_LIGHT_IN_AIR;
+
+		/* Add 5000 before dividing by 10000 to ensure rounding. */
+		sigmaEstRtn		 += 5000;
+		sigmaEstRtn		 /= 10000;
+
+		if (sigmaEstRtn > cSigmaEstRtnMax) {
+			/* Clip to prevent overflow. Will ensure safe
+			 * max result.
+			 */
+			sigmaEstRtn = cSigmaEstRtnMax;
+		}
+
+		/* FixPoint1616 * FixPoint1616 = FixPoint3232 */
+		sqr1 = sigmaEstRtn * sigmaEstRtn;
+		/* FixPoint1616 * FixPoint1616 = FixPoint3232 */
+		sqr2 = cSigmaEstRef * cSigmaEstRef;
+
+		/* sqrt(FixPoint3232) = FixPoint1616 */
+		sqrtResult = VL53L0_isqrt((sqr1 + sqr2));
+		/*
+		 * Note that the Shift by 4 bits increases resolution prior to
+		 * the sqrt, therefore the result must be shifted by 2 bits to
+		 * the right to revert back to the FixPoint1616 format.
+		 */
+
+		sigmaEstimate	 = 1000 * sqrtResult;
+
+		if ((peakSignalRate_kcps < 1) || (vcselTotalEventsRtn < 1) ||
+				(sigmaEstimate > cSigmaEstMax)) {
+			sigmaEstimate = cSigmaEstMax;
+		}
+
+		*pSigmaEstimate = (uint32_t)(sigmaEstimate);
+		PALDevDataSet(Dev, SigmaEstimate, *pSigmaEstimate);
+		Status = VL53L0_calc_dmax(
+			Dev,
+			totalSignalRate_mcps,
+			correctedSignalRate_mcps,
+			pwMult,
+			sigmaEstimateP1,
+			sigmaEstimateP2,
+			peakVcselDuration_us,
+			pDmax_mm);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_pal_range_status(VL53L0_DEV Dev,
+		uint8_t DeviceRangeStatus,
+		FixPoint1616_t SignalRate,
+		uint16_t EffectiveSpadRtnCount,
+		VL53L0_RangingMeasurementData_t *pRangingMeasurementData,
+		uint8_t *pPalRangeStatus)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t NoneFlag;
+	uint8_t SigmaLimitflag = 0;
+	uint8_t SignalRefClipflag = 0;
+	uint8_t RangeIgnoreThresholdflag = 0;
+	uint8_t SigmaLimitCheckEnable = 0;
+	uint8_t SignalRateFinalRangeLimitCheckEnable = 0;
+	uint8_t SignalRefClipLimitCheckEnable = 0;
+	uint8_t RangeIgnoreThresholdLimitCheckEnable = 0;
+	FixPoint1616_t SigmaEstimate;
+	FixPoint1616_t SigmaLimitValue;
+	FixPoint1616_t SignalRefClipValue;
+	FixPoint1616_t RangeIgnoreThresholdValue;
+	FixPoint1616_t SignalRatePerSpad;
+	uint8_t DeviceRangeStatusInternal = 0;
+	uint16_t tmpWord = 0;
+	uint8_t Temp8;
+	uint32_t Dmax_mm = 0;
+	FixPoint1616_t LastSignalRefMcps;
+
+	LOG_FUNCTION_START("");
+
+
+	/*
+	 * VL53L0 has a good ranging when the value of the
+	 * DeviceRangeStatus = 11. This function will replace the value 0 with
+	 * the value 11 in the DeviceRangeStatus.
+	 * In addition, the SigmaEstimator is not included in the VL53L0
+	 * DeviceRangeStatus, this will be added in the PalRangeStatus.
+	 */
+
+	DeviceRangeStatusInternal = ((DeviceRangeStatus & 0x78) >> 3);
+
+	if (DeviceRangeStatusInternal == 0 ||
+		DeviceRangeStatusInternal == 5 ||
+		DeviceRangeStatusInternal == 7 ||
+		DeviceRangeStatusInternal == 12 ||
+		DeviceRangeStatusInternal == 13 ||
+		DeviceRangeStatusInternal == 14 ||
+		DeviceRangeStatusInternal == 15
+			) {
+		NoneFlag = 1;
+	} else {
+		NoneFlag = 0;
+	}
+
+	/* LastSignalRefMcps */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev, 0xFF, 0x01);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_RdWord(Dev,
+			VL53L0_REG_RESULT_PEAK_SIGNAL_RATE_REF,
+			&tmpWord);
+
+	LastSignalRefMcps = VL53L0_FIXPOINT97TOFIXPOINT1616(tmpWord);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	PALDevDataSet(Dev, LastSignalRefMcps, LastSignalRefMcps);
+
+	/*
+	 * Check if Sigma limit is enabled, if yes then do comparison with limit
+	 * value and put the result back into pPalRangeStatus.
+	 */
+	if (Status == VL53L0_ERROR_NONE)
+		Status =  VL53L0_GetLimitCheckEnable(Dev,
+			VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE,
+			&SigmaLimitCheckEnable);
+
+	if ((SigmaLimitCheckEnable != 0) && (Status == VL53L0_ERROR_NONE)) {
+		/*
+		* compute the Sigma and check with limit
+		*/
+		Status = VL53L0_calc_sigma_estimate(
+			Dev,
+			pRangingMeasurementData,
+			&SigmaEstimate,
+			&Dmax_mm);
+		if (Status == VL53L0_ERROR_NONE)
+			pRangingMeasurementData->RangeDMaxMilliMeter = Dmax_mm;
+
+		if (Status == VL53L0_ERROR_NONE) {
+			Status = VL53L0_GetLimitCheckValue(Dev,
+				VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE,
+				&SigmaLimitValue);
+
+			if ((SigmaLimitValue > 0) &&
+				(SigmaEstimate > SigmaLimitValue))
+					/* Limit Fail */
+				SigmaLimitflag = 1;
+		}
+	}
+
+	/*
+	 * Check if Signal ref clip limit is enabled, if yes then do comparison
+	 * with limit value and put the result back into pPalRangeStatus.
+	 */
+	if (Status == VL53L0_ERROR_NONE)
+		Status =  VL53L0_GetLimitCheckEnable(Dev,
+				VL53L0_CHECKENABLE_SIGNAL_REF_CLIP,
+				&SignalRefClipLimitCheckEnable);
+
+	if ((SignalRefClipLimitCheckEnable != 0) &&
+			(Status == VL53L0_ERROR_NONE)) {
+
+		Status = VL53L0_GetLimitCheckValue(Dev,
+				VL53L0_CHECKENABLE_SIGNAL_REF_CLIP,
+				&SignalRefClipValue);
+
+		if ((SignalRefClipValue > 0) &&
+				(LastSignalRefMcps > SignalRefClipValue)) {
+			/* Limit Fail */
+			SignalRefClipflag = 1;
+		}
+	}
+
+	/*
+	 * Check if Signal ref clip limit is enabled, if yes then do comparison
+	 * with limit value and put the result back into pPalRangeStatus.
+	 * EffectiveSpadRtnCount has a format 8.8
+	 * If (Return signal rate < (1.5 x Xtalk x number of Spads)) : FAIL
+	 */
+	if (Status == VL53L0_ERROR_NONE)
+		Status =  VL53L0_GetLimitCheckEnable(Dev,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				&RangeIgnoreThresholdLimitCheckEnable);
+
+	if ((RangeIgnoreThresholdLimitCheckEnable != 0) &&
+			(Status == VL53L0_ERROR_NONE)) {
+
+		/* Compute the signal rate per spad */
+		if (EffectiveSpadRtnCount == 0) {
+			SignalRatePerSpad = 0;
+		} else {
+			SignalRatePerSpad = (FixPoint1616_t)((256 * SignalRate)
+				/ EffectiveSpadRtnCount);
+		}
+
+		Status = VL53L0_GetLimitCheckValue(Dev,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				&RangeIgnoreThresholdValue);
+
+		if ((RangeIgnoreThresholdValue > 0) &&
+			(SignalRatePerSpad < RangeIgnoreThresholdValue)) {
+			/* Limit Fail add 2^6 to range status */
+			RangeIgnoreThresholdflag = 1;
+		}
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (NoneFlag == 1) {
+			*pPalRangeStatus = 255;	 /* NONE */
+		} else if (DeviceRangeStatusInternal == 1 ||
+					DeviceRangeStatusInternal == 2 ||
+					DeviceRangeStatusInternal == 3) {
+			*pPalRangeStatus = 5; /* HW fail */
+		} else if (DeviceRangeStatusInternal == 6 ||
+					DeviceRangeStatusInternal == 9) {
+			*pPalRangeStatus = 4;  /* Phase fail */
+		} else if (DeviceRangeStatusInternal == 8 ||
+					DeviceRangeStatusInternal == 10 ||
+					SignalRefClipflag == 1) {
+			*pPalRangeStatus = 3;  /* Min range */
+		} else if (DeviceRangeStatusInternal == 4 ||
+					RangeIgnoreThresholdflag == 1) {
+			*pPalRangeStatus = 2;  /* Signal Fail */
+		} else if (SigmaLimitflag == 1) {
+			*pPalRangeStatus = 1;  /* Sigma	 Fail */
+		} else {
+			*pPalRangeStatus = 0; /* Range Valid */
+		}
+	}
+
+	/* DMAX only relevant during range error */
+	if (*pPalRangeStatus == 0)
+		pRangingMeasurementData->RangeDMaxMilliMeter = 0;
+
+	/* fill the Limit Check Status */
+
+	Status =  VL53L0_GetLimitCheckEnable(Dev,
+			VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+			&SignalRateFinalRangeLimitCheckEnable);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if ((SigmaLimitCheckEnable == 0) || (SigmaLimitflag == 1))
+			Temp8 = 1;
+		else
+			Temp8 = 0;
+		VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksStatus,
+				VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE, Temp8);
+
+		if ((DeviceRangeStatusInternal == 4) ||
+				(SignalRateFinalRangeLimitCheckEnable == 0))
+			Temp8 = 1;
+		else
+			Temp8 = 0;
+		VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksStatus,
+				VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+				Temp8);
+
+		if ((SignalRefClipLimitCheckEnable == 0) ||
+					(SignalRefClipflag == 1))
+			Temp8 = 1;
+		else
+			Temp8 = 0;
+
+		VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksStatus,
+				VL53L0_CHECKENABLE_SIGNAL_REF_CLIP, Temp8);
+
+		if ((RangeIgnoreThresholdLimitCheckEnable == 0) ||
+				(RangeIgnoreThresholdflag == 1))
+			Temp8 = 1;
+		else
+			Temp8 = 0;
+
+		VL53L0_SETARRAYPARAMETERFIELD(Dev, LimitChecksStatus,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				Temp8);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+
+}
diff --git a/drivers/input/misc/vl53L0/src/vl53l0_api_histogram.c b/drivers/input/misc/vl53L0/src/vl53l0_api_histogram.c
new file mode 100644
index 000000000000..21b0410dd6ae
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l0_api_histogram.c
@@ -0,0 +1,750 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of STMicroelectronics nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+ NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+ IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ ******************************************************************************/
+
+#include "vl53l0_api.h"
+#include "vl53l0_api_core.h"
+#include "vl53l0_api_histogram.h"
+
+
+#ifndef __KERNEL__
+#include <stdlib.h>
+#endif
+#define LOG_FUNCTION_START(fmt, ...) \
+	_LOG_FUNCTION_START(TRACE_MODULE_API, fmt, ##__VA_ARGS__)
+#define LOG_FUNCTION_END(status, ...) \
+	_LOG_FUNCTION_END(TRACE_MODULE_API, status, ##__VA_ARGS__)
+#define LOG_FUNCTION_END_FMT(status, fmt, ...) \
+	_LOG_FUNCTION_END_FMT(TRACE_MODULE_API, status, fmt, ##__VA_ARGS__)
+
+
+typedef uint32_t WindowSelection;
+#define VL53L0_AMBIENT_WINDOW_ONLY		 ((WindowSelection) 0)
+	/*!< Measure Ambient Signal only */
+#define VL53L0_AMBIENT_AND_SIGNAL_WINDOW ((WindowSelection) 1)
+	/*!< Measure Combined Ambient and Signal Rate. */
+
+
+VL53L0_Error VL53L0_start_histogram_measurement(VL53L0_DEV Dev,
+			VL53L0_HistogramModes histoMode,
+			uint32_t count)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t dataByte;
+
+	LOG_FUNCTION_START("");
+
+
+	dataByte = VL53L0_REG_SYSRANGE_MODE_SINGLESHOT |
+		VL53L0_REG_SYSRANGE_MODE_START_STOP;
+
+	/* First histogram measurement must have bit 5 set */
+	if (count == 0)
+		dataByte |= (1 << 5);
+
+	switch (histoMode) {
+	case VL53L0_HISTOGRAMMODE_DISABLED:
+		/* Selected mode not supported */
+		Status = VL53L0_ERROR_INVALID_COMMAND;
+		break;
+
+	case VL53L0_HISTOGRAMMODE_REFERENCE_ONLY:
+	case VL53L0_HISTOGRAMMODE_RETURN_ONLY:
+	case VL53L0_HISTOGRAMMODE_BOTH:
+		dataByte |= (histoMode << 3);
+		Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSRANGE_START,
+			dataByte);
+		if (Status == VL53L0_ERROR_NONE) {
+			/* Set PAL State to Running */
+			PALDevDataSet(Dev, PalState, VL53L0_STATE_RUNNING);
+		}
+		break;
+
+	default:
+		/* Selected mode not supported */
+		Status = VL53L0_ERROR_MODE_NOT_SUPPORTED;
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_confirm_measurement_start(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t NewDataReady = 0;
+	uint32_t LoopNb;
+
+	LOG_FUNCTION_START("");
+
+	LoopNb = 0;
+	do {
+		Status = VL53L0_GetMeasurementDataReady(Dev, &NewDataReady);
+		if ((NewDataReady == 0x01) || Status != VL53L0_ERROR_NONE)
+			break;
+
+		LoopNb = LoopNb + 1;
+		VL53L0_PollingDelay(Dev);
+	} while (LoopNb < VL53L0_DEFAULT_MAX_LOOP);
+
+	if (LoopNb >= VL53L0_DEFAULT_MAX_LOOP)
+		Status = VL53L0_ERROR_TIME_OUT;
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_set_histogram_mode(VL53L0_DEV Dev,
+		VL53L0_HistogramModes HistogramMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	switch (HistogramMode) {
+	case VL53L0_HISTOGRAMMODE_DISABLED:
+	case VL53L0_HISTOGRAMMODE_REFERENCE_ONLY:
+	case VL53L0_HISTOGRAMMODE_RETURN_ONLY:
+	case VL53L0_HISTOGRAMMODE_BOTH:
+		/* Supported mode */
+		VL53L0_SETPARAMETERFIELD(Dev, HistogramMode, HistogramMode);
+		break;
+	default:
+		/* Unsupported mode */
+		Status = VL53L0_ERROR_MODE_NOT_SUPPORTED;
+	}
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_histogram_mode(VL53L0_DEV Dev,
+	VL53L0_HistogramModes *pHistogramMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	VL53L0_GETPARAMETERFIELD(Dev, HistogramMode, *pHistogramMode);
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_perform_single_histogram_measurement(VL53L0_DEV Dev,
+		VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceModes DeviceMode;
+	VL53L0_HistogramModes HistogramMode = VL53L0_HISTOGRAMMODE_DISABLED;
+	uint32_t MeasCount;
+	uint32_t Measurements;
+
+	/* Get Current DeviceMode */
+	Status = VL53L0_GetHistogramMode(Dev, &HistogramMode);
+
+
+	if (Status != VL53L0_ERROR_NONE)
+		return Status;
+
+
+	if (HistogramMode == VL53L0_HISTOGRAMMODE_BOTH) {
+		if (pHistogramMeasurementData->BufferSize <
+				VL53L0_HISTOGRAM_BUFFER_SIZE) {
+			Status = VL53L0_ERROR_BUFFER_TOO_SMALL;
+		}
+	} else {
+		if (pHistogramMeasurementData->BufferSize <
+				VL53L0_HISTOGRAM_BUFFER_SIZE/2) {
+			Status = VL53L0_ERROR_BUFFER_TOO_SMALL;
+		}
+	}
+	pHistogramMeasurementData->HistogramType = (uint8_t)HistogramMode;
+	pHistogramMeasurementData->ErrorStatus	 = VL53L0_DEVICEERROR_NONE;
+	pHistogramMeasurementData->FirstBin	 = 0;
+	pHistogramMeasurementData->NumberOfBins	 = 0;
+
+
+	/* Get Current DeviceMode */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_GetDeviceMode(Dev, &DeviceMode);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev, VL53L0_REG_SYSTEM_HISTOGRAM_BIN,
+			0x00);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev,
+			VL53L0_REG_HISTOGRAM_CONFIG_INITIAL_PHASE_SELECT, 0x00);
+
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_WrByte(Dev,
+				VL53L0_REG_HISTOGRAM_CONFIG_READOUT_CTRL, 0x01);
+
+	if (Status != VL53L0_ERROR_NONE)
+		return Status;
+
+	Measurements = 3;
+	if (HistogramMode == VL53L0_HISTOGRAMMODE_BOTH)
+		Measurements = 6;
+
+	if (DeviceMode != VL53L0_DEVICEMODE_SINGLE_HISTOGRAM) {
+		Status = VL53L0_ERROR_INVALID_COMMAND;
+		return Status;
+	}
+
+	/* DeviceMode == VL53L0_DEVICEMODE_SINGLE_HISTOGRAM */
+	MeasCount = 0;
+	while ((MeasCount < Measurements) && (Status == VL53L0_ERROR_NONE)) {
+		Status = VL53L0_start_histogram_measurement(Dev, HistogramMode,
+			MeasCount);
+
+		if (Status == VL53L0_ERROR_NONE)
+			VL53L0_confirm_measurement_start(Dev);
+
+		if (Status == VL53L0_ERROR_NONE)
+			PALDevDataSet(Dev, PalState, VL53L0_STATE_RUNNING);
+
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L0_measurement_poll_for_completion(Dev);
+
+		if (Status == VL53L0_ERROR_NONE) {
+			Status = VL53L0_read_histo_measurement(Dev,
+			pHistogramMeasurementData->HistogramData,
+			MeasCount,
+			HistogramMode);
+
+			if (Status == VL53L0_ERROR_NONE) {
+				/*
+				* When reading both rtn and ref arrays,
+				* histograms are read two bins at a time.
+				*  For rtn or ref only, histograms are read four
+				*  bins at a time.
+				*/
+				if (HistogramMode == VL53L0_HISTOGRAMMODE_BOTH)
+					pHistogramMeasurementData->NumberOfBins
+						+= 2;
+				else
+					pHistogramMeasurementData->NumberOfBins
+						+= 4;
+
+			}
+		}
+
+		if (Status == VL53L0_ERROR_NONE)
+			Status = VL53L0_ClearInterruptMask(Dev, 0);
+
+		MeasCount++;
+	}
+
+	/* Change PAL State in case of single ranging or single histogram */
+	if (Status == VL53L0_ERROR_NONE) {
+		pHistogramMeasurementData->NumberOfBins = 12;
+		PALDevDataSet(Dev, PalState, VL53L0_STATE_IDLE);
+	}
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_get_histogram_measurement_data(VL53L0_DEV Dev,
+		VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NOT_IMPLEMENTED;
+
+	LOG_FUNCTION_START("");
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_read_histo_measurement(VL53L0_DEV Dev,
+			uint32_t *histoData,
+			uint32_t offset,
+			VL53L0_HistogramModes histoMode)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t localBuffer[28];
+	uint32_t cDataSize	= 4;
+	uint32_t offset1;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_WrByte(Dev, 0xFF, VL53L0_REG_RESULT_CORE_PAGE);
+	Status = VL53L0_ReadMulti(Dev,
+		(uint8_t)VL53L0_REG_RESULT_CORE_AMBIENT_WINDOW_EVENTS_RTN,
+		localBuffer,
+		28);
+	Status |= VL53L0_WrByte(Dev, 0xFF, 0x00);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		VL53L0_reverse_bytes(&localBuffer[0], cDataSize);
+		VL53L0_reverse_bytes(&localBuffer[4], cDataSize);
+		VL53L0_reverse_bytes(&localBuffer[20], cDataSize);
+		VL53L0_reverse_bytes(&localBuffer[24], cDataSize);
+
+		offset1 = offset * cDataSize;
+		if (histoMode == VL53L0_HISTOGRAMMODE_BOTH) {
+			/*
+			 * When reading both return and ref data, each
+			 * measurement reads two ref values and two return
+			 * values. Data is stored in an interleaved sequence,
+			 * starting with the return histogram.
+			 *
+			 * Some result Core registers are reused for the
+			 * histogram measurements
+			 *
+			 * The bin values are retrieved in the following order
+			 * VL53L0_REG_RESULT_CORE_RANGING_TOTAL_EVENTS_RTN
+			 * VL53L0_REG_RESULT_CORE_RANGING_TOTAL_EVENTS_REF
+			 * VL53L0_REG_RESULT_CORE_AMBIENT_WINDOW_EVENTS_RTN
+			 * VL53L0_REG_RESULT_CORE_AMBIENT_WINDOW_EVENTS_REF
+			 */
+
+			memcpy(&histoData[offset1], &localBuffer[4],
+				cDataSize); /* rtn */
+			memcpy(&histoData[offset1 + 1], &localBuffer[24],
+				cDataSize); /* ref */
+			memcpy(&histoData[offset1 + 2], &localBuffer[0],
+				cDataSize); /* rtn */
+			memcpy(&histoData[offset1 + 3], &localBuffer[20],
+				cDataSize); /* ref */
+
+		} else {
+			/*
+			 * When reading either return and ref data, each
+			 * measurement reads four bin values.
+			 *
+			 * The bin values are retrieved in the following order
+			 * VL53L0_REG_RESULT_CORE_RANGING_TOTAL_EVENTS_RTN
+			 * VL53L0_REG_RESULT_CORE_AMBIENT_WINDOW_EVENTS_RTN
+			 * VL53L0_REG_RESULT_CORE_RANGING_TOTAL_EVENTS_REF
+			 * VL53L0_REG_RESULT_CORE_AMBIENT_WINDOW_EVENTS_REF
+			 */
+
+			memcpy(&histoData[offset1], &localBuffer[24],
+				cDataSize);
+			memcpy(&histoData[offset1 + 1], &localBuffer[20],
+				cDataSize);
+			memcpy(&histoData[offset1 + 2], &localBuffer[4],
+				cDataSize);
+			memcpy(&histoData[offset1 + 3], &localBuffer[0],
+				cDataSize);
+
+		}
+	}
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_get_max_spads(VL53L0_DEV Dev,
+	uint32_t *pmax_spads, uint8_t *pambient_too_high)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t TCC_Enabled;
+	uint8_t MSRC_Enabled;
+	VL53L0_RangingMeasurementData_t RangingMeasurementData;
+	FixPoint1616_t ratio = 0;
+	uint32_t max_spads = 0;
+
+	/* Get the value of the TCC */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_GetSequenceStepEnable(Dev,
+				VL53L0_SEQUENCESTEP_TCC, &TCC_Enabled);
+
+	/* Get the value of the MSRC */
+	if (Status == VL53L0_ERROR_NONE)
+		Status = VL53L0_GetSequenceStepEnable(Dev,
+				VL53L0_SEQUENCESTEP_MSRC, &MSRC_Enabled);
+
+	/* Disable the TCC */
+	if  ((Status == VL53L0_ERROR_NONE) && (TCC_Enabled != 0))
+		Status = VL53L0_SetSequenceStepEnable(Dev,
+				VL53L0_SEQUENCESTEP_TCC, 0);
+
+	/* Disable the MSRC */
+	if ((Status == VL53L0_ERROR_NONE) && (MSRC_Enabled != 0))
+		Status = VL53L0_SetSequenceStepEnable(Dev,
+				VL53L0_SEQUENCESTEP_MSRC, 0);
+
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_PerformSingleRangingMeasurement(Dev,
+				&RangingMeasurementData);
+		max_spads = (RangingMeasurementData.EffectiveSpadRtnCount +
+			128)/256;
+		*pmax_spads = max_spads;
+	}
+
+	/* Check Ambient per spad > 10 Kcps */
+	if (Status == VL53L0_ERROR_NONE) {
+		if (max_spads <= 0) {
+			*pambient_too_high = 1;
+			Status = VL53L0_ERROR_DIVISION_BY_ZERO;
+		} else {
+			ratio = RangingMeasurementData.AmbientRateRtnMegaCps /
+				max_spads;
+
+			/* ratio is given in mega count per second and
+			 * FixPoint1616_t
+			 */
+			if (ratio >  65536/100)
+				*pambient_too_high = 1;
+			else
+				*pambient_too_high = 0;
+
+		}
+	}
+
+
+	/* Restore the TCC */
+	if (Status == VL53L0_ERROR_NONE) {
+		if (TCC_Enabled != 0)
+			Status = VL53L0_SetSequenceStepEnable(Dev,
+					VL53L0_SEQUENCESTEP_TCC, 1);
+	}
+
+	/* Restore the MSRC */
+	if (Status == VL53L0_ERROR_NONE) {
+		if (MSRC_Enabled != 0)
+			Status = VL53L0_SetSequenceStepEnable(Dev,
+					VL53L0_SEQUENCESTEP_MSRC, 1);
+	}
+
+	return Status;
+
+}
+
+
+VL53L0_Error calc_xtalk_mcps_per_spad(
+	uint32_t rtn_signal_events,
+	uint32_t timeout_ms,
+	uint32_t max_spads,
+	uint8_t vcsel_pulse_period_pclk,
+	FixPoint1616_t *pxtalk_mcps_per_spad)
+{
+	/* Calculate the X-Talk per Spad based on given inputs.
+	 *
+	 * To calculate x-talk, only a portion of the vcsel pulse period is
+	 * used, therefore we use the ratio between vcsel_width_pclk and
+	 * vcsel_pulse_period_pclks to determine the integration time.
+	 *
+	 * With the rtn signal events, and the integration time,
+	 * the x-talk rate per spad is then determined.
+	 */
+
+	const FixPoint1616_t cmin_xtalk_per_spad = 8; /* 0.000122 */
+	const FixPoint1616_t ccompensation2 = 13;/* 0.0002 */
+	const FixPoint1616_t ccompensation1 = 7; /* 0.0001; */
+	const FixPoint1616_t ctalk_thresh = 66;	 /* 0.001 */
+	const uint32_t c16BitRoundingParam = 0x00008000;
+	VL53L0_Error status = VL53L0_ERROR_NONE;
+	FixPoint1616_t xtalk_mcps;
+	FixPoint1616_t vcsel_width_to_period_ratio;
+	FixPoint1616_t integration_time_us;
+	uint32_t integration_time_us_int;
+	uint8_t vcsel_width_pclk = 3;
+
+	LOG_FUNCTION_START("");
+
+	if (vcsel_pulse_period_pclk == 0 || timeout_ms == 0)
+		status = VL53L0_ERROR_DIVISION_BY_ZERO;
+
+
+	if (status == VL53L0_ERROR_NONE) {
+
+		/* (FixPoint1616 + uint32)/uint32 = FixPoint1616 */
+		vcsel_width_to_period_ratio =
+			((vcsel_width_pclk << 16) +
+			(vcsel_pulse_period_pclk/2))/vcsel_pulse_period_pclk;
+
+		/* uint32_t * FixPoint1616 = FixPoint1616 */
+		integration_time_us = timeout_ms * vcsel_width_to_period_ratio
+			* 1000;
+
+		/*FixPoint1616 >>16 = uint32_t */
+		integration_time_us_int = (integration_time_us +
+			c16BitRoundingParam) >> 16;
+
+		/* (uint32_t << 16)/uint32_t = FixPoint1616 */
+		xtalk_mcps = rtn_signal_events << 16;
+		xtalk_mcps = (xtalk_mcps +
+			(integration_time_us_int/2))/integration_time_us_int;
+
+		/* (FixPoint1616 + uint32)/uint32 = FixPoint1616 */
+		*pxtalk_mcps_per_spad = (xtalk_mcps + (max_spads/2))/max_spads;
+
+		/* Apply compensation to prevent overshoot.
+		 */
+		if (*pxtalk_mcps_per_spad < ctalk_thresh)
+			*pxtalk_mcps_per_spad = *pxtalk_mcps_per_spad
+				- ccompensation2;
+		else
+			*pxtalk_mcps_per_spad = *pxtalk_mcps_per_spad
+				- ccompensation1;
+
+		if (*pxtalk_mcps_per_spad < cmin_xtalk_per_spad)
+			*pxtalk_mcps_per_spad = cmin_xtalk_per_spad;
+
+	}
+	LOG_FUNCTION_END("");
+
+	return status;
+}
+
+
+uint32_t bytes_to_int(uint8_t *data_bytes)
+{
+	/* Convert an array of 4 bytes to an integer.
+	 */
+	uint32_t data = (uint32_t)data_bytes[0] << 24;
+
+	data += ((uint32_t)data_bytes[1] << 16);
+	data += ((uint32_t)data_bytes[2] << 8);
+	data += ((uint32_t)data_bytes[3]);
+	return data;
+}
+
+VL53L0_Error perform_histo_signal_meas(VL53L0_DEV dev,
+	WindowSelection window_select,
+	uint32_t *psignal_events)
+{
+	VL53L0_Error status = VL53L0_ERROR_NONE;
+	uint8_t data[8];
+	uint8_t readout_ctrl_val;
+	uint32_t bin_width = 3;
+
+	LOG_FUNCTION_START("");
+
+	/* Select Ambient or Total Signal Measurement
+	 */
+	if (status == VL53L0_ERROR_NONE) {
+		readout_ctrl_val = bin_width;
+		if (window_select == VL53L0_AMBIENT_WINDOW_ONLY)
+			readout_ctrl_val += 0x80;
+
+		status = VL53L0_WrByte(
+			dev, VL53L0_REG_HISTOGRAM_CONFIG_READOUT_CTRL,
+			readout_ctrl_val);
+	}
+
+	/* Perform Measurement.
+	 */
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_start_histogram_measurement(
+			dev, VL53L0_HISTOGRAMMODE_RETURN_ONLY, 0);
+
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_measurement_poll_for_completion(dev);
+
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_ClearInterruptMask(dev, 0);
+
+	/* Read Measurement Data.
+	 */
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_WrByte(dev, 0xFF, VL53L0_REG_RESULT_CORE_PAGE);
+
+
+	if (status == VL53L0_ERROR_NONE) {
+		status = VL53L0_ReadMulti(dev,
+		(uint8_t)VL53L0_REG_RESULT_CORE_AMBIENT_WINDOW_EVENTS_RTN,
+			data,
+			8);
+	}
+
+	if (status == VL53L0_ERROR_NONE)
+		status |= VL53L0_WrByte(dev, 0xFF, 0x00);
+
+
+	/* Take the sum of the Ambient and Signal Window Event readings.
+	 */
+	if (status == VL53L0_ERROR_NONE)
+		*psignal_events =  bytes_to_int(data) +
+			bytes_to_int(&(data[4]));
+
+
+	LOG_FUNCTION_END(status);
+
+	return status;
+}
+
+VL53L0_Error set_final_range_timeout_us(
+	VL53L0_DEV dev, uint32_t timeout_microSecs,
+	uint16_t final_range_vcsel_period_pclks)
+{
+	VL53L0_Error status = VL53L0_ERROR_NONE;
+	uint16_t final_range_timeout_mclks;
+	uint16_t final_range_encoded_timeOut;
+
+	LOG_FUNCTION_START("");
+
+	/* Calculate FINAL RANGE Timeout in Macro Periods (MCLKS)
+	 */
+
+	/* convert timeout to mclks. */
+	final_range_timeout_mclks = VL53L0_calc_timeout_mclks(dev,
+		timeout_microSecs, (uint8_t) final_range_vcsel_period_pclks);
+
+	/* Encode timeout */
+	final_range_encoded_timeOut = VL53L0_encode_timeout(
+		final_range_timeout_mclks);
+
+	/* Write to device */
+	status = VL53L0_WrWord(dev,
+		VL53L0_REG_FINAL_RANGE_CONFIG_TIMEOUT_MACROP_HI,
+		final_range_encoded_timeOut);
+
+	LOG_FUNCTION_END(status);
+
+	return status;
+}
+
+
+VL53L0_Error perform_histogram_config(VL53L0_DEV dev,
+		uint32_t timeout_ms, uint16_t final_range_vcsel_period_pclks)
+{
+	VL53L0_Error status = VL53L0_ERROR_NONE;
+	uint8_t phaseSelect = 1;
+
+	LOG_FUNCTION_START("");
+
+	if (status == VL53L0_ERROR_NONE)
+		status = set_final_range_timeout_us(
+			dev, timeout_ms * 1000, final_range_vcsel_period_pclks);
+
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_SetDeviceMode(dev,
+			VL53L0_DEVICEMODE_SINGLE_HISTOGRAM);
+
+
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_SetHistogramMode(dev,
+			VL53L0_HISTOGRAMMODE_BOTH);
+
+
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_WrByte(dev, VL53L0_REG_SYSTEM_HISTOGRAM_BIN,
+			0x00);
+
+
+	/* Apply specific phase select for x-talk measurement */
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_WrByte(dev,
+			VL53L0_REG_HISTOGRAM_CONFIG_INITIAL_PHASE_SELECT,
+			phaseSelect);
+
+
+	LOG_FUNCTION_END(status);
+
+	return status;
+}
+
+
+VL53L0_Error VL53L0_perform_xtalk_measurement(VL53L0_DEV dev,
+	uint32_t timeout_ms, FixPoint1616_t *pxtalk_per_spad,
+	uint8_t *pambient_too_high)
+{
+	VL53L0_Error status = VL53L0_ERROR_NONE;
+	uint32_t signal_events = 0;
+	uint32_t amb_events = 0;
+	uint32_t meas_timing_budget_us;
+	VL53L0_DeviceModes device_mode;
+	uint8_t final_range_vcsel_period_pclks;
+	uint32_t max_spads;
+
+	/* Get Current DeviceMode */
+	status = VL53L0_GetDeviceMode(dev, &device_mode);
+
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_get_max_spads(dev, &max_spads,
+			pambient_too_high);
+
+	if (status != VL53L0_ERROR_NONE)
+		return status;
+
+
+	if (status == VL53L0_ERROR_NONE) {
+		status = VL53L0_GetVcselPulsePeriod(
+			dev,
+			VL53L0_VCSEL_PERIOD_FINAL_RANGE,
+			&final_range_vcsel_period_pclks);
+	}
+
+	if (status == VL53L0_ERROR_NONE) {
+		if (final_range_vcsel_period_pclks < 10)
+			status = VL53L0_ERROR_INVALID_PARAMS;
+	}
+
+	if (status == VL53L0_ERROR_NONE) {
+		perform_histogram_config(
+			dev, timeout_ms, final_range_vcsel_period_pclks);
+	}
+
+	if (status == VL53L0_ERROR_NONE) {
+		status = perform_histo_signal_meas(
+			dev,
+			VL53L0_AMBIENT_WINDOW_ONLY,
+			&amb_events);
+	}
+
+	if (status == VL53L0_ERROR_NONE) {
+		status = perform_histo_signal_meas(
+			dev,
+			VL53L0_AMBIENT_AND_SIGNAL_WINDOW,
+			&signal_events);
+	}
+
+	if (status == VL53L0_ERROR_NONE) {
+		status = calc_xtalk_mcps_per_spad(
+			(signal_events - amb_events),
+			timeout_ms,
+			max_spads,
+			final_range_vcsel_period_pclks,
+			pxtalk_per_spad);
+	}
+
+	/* Revert previous device mode. */
+	if (status == VL53L0_ERROR_NONE)
+		status = VL53L0_SetDeviceMode(dev, device_mode);
+
+	/* Revert previous timing budget, to ensure previous final range vcsel
+	 * period is applied.
+	 */
+	if (status == VL53L0_ERROR_NONE) {
+		VL53L0_GETPARAMETERFIELD(
+			dev,
+			MeasurementTimingBudgetMicroSeconds,
+			meas_timing_budget_us);
+
+		status = VL53L0_SetMeasurementTimingBudgetMicroSeconds(
+			dev, meas_timing_budget_us);
+	}
+
+	return status;
+}
+
diff --git a/drivers/input/misc/vl53L0/src/vl53l0_api_ranging.c b/drivers/input/misc/vl53L0/src/vl53l0_api_ranging.c
new file mode 100644
index 000000000000..f575aec7c5ed
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l0_api_ranging.c
@@ -0,0 +1,42 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of STMicroelectronics nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+ NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+ IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ ******************************************************************************/
+
+#include "vl53l0_api.h"
+#include "vl53l0_api_core.h"
+
+
+#ifndef __KERNEL__
+#include <stdlib.h>
+#endif
+#define LOG_FUNCTION_START(fmt, ...) \
+	_LOG_FUNCTION_START(TRACE_MODULE_API, fmt, ##__VA_ARGS__)
+#define LOG_FUNCTION_END(status, ...) \
+	_LOG_FUNCTION_END(TRACE_MODULE_API, status, ##__VA_ARGS__)
+#define LOG_FUNCTION_END_FMT(status, fmt, ...) \
+	_LOG_FUNCTION_END_FMT(TRACE_MODULE_API, status, fmt, ##__VA_ARGS__)
+
diff --git a/drivers/input/misc/vl53L0/src/vl53l0_api_strings.c b/drivers/input/misc/vl53L0/src/vl53l0_api_strings.c
new file mode 100644
index 000000000000..a5f2bbadd290
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l0_api_strings.c
@@ -0,0 +1,463 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of STMicroelectronics nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+ NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+ IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ ******************************************************************************/
+
+#include "vl53l0_api.h"
+#include "vl53l0_api_core.h"
+#include "vl53l0_api_strings.h"
+
+#ifndef __KERNEL__
+#include <stdlib.h>
+#endif
+
+#define LOG_FUNCTION_START(fmt, ...) \
+	_LOG_FUNCTION_START(TRACE_MODULE_API, fmt, ##__VA_ARGS__)
+#define LOG_FUNCTION_END(status, ...) \
+	_LOG_FUNCTION_END(TRACE_MODULE_API, status, ##__VA_ARGS__)
+#define LOG_FUNCTION_END_FMT(status, fmt, ...) \
+	_LOG_FUNCTION_END_FMT(TRACE_MODULE_API, status, fmt, ##__VA_ARGS__)
+
+
+VL53L0_Error VL53L0_check_part_used(VL53L0_DEV Dev,
+		uint8_t *Revision,
+		VL53L0_DeviceInfo_t *pVL53L0_DeviceInfo)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t ModuleIdInt;
+	char *ProductId_tmp;
+
+	LOG_FUNCTION_START("");
+
+	Status = VL53L0_get_info_from_device(Dev, 2);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		ModuleIdInt = VL53L0_GETDEVICESPECIFICPARAMETER(Dev, ModuleId);
+
+	if (ModuleIdInt == 0) {
+		*Revision = 0;
+		VL53L0_COPYSTRING(pVL53L0_DeviceInfo->ProductId, "");
+	} else {
+		*Revision = VL53L0_GETDEVICESPECIFICPARAMETER(Dev, Revision);
+		ProductId_tmp = VL53L0_GETDEVICESPECIFICPARAMETER(Dev,
+			ProductId);
+		VL53L0_COPYSTRING(pVL53L0_DeviceInfo->ProductId, ProductId_tmp);
+	}
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_get_device_info(VL53L0_DEV Dev,
+				VL53L0_DeviceInfo_t *pVL53L0_DeviceInfo)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint8_t revision_id;
+	uint8_t Revision;
+
+	Status = VL53L0_check_part_used(Dev, &Revision, pVL53L0_DeviceInfo);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		if (Revision == 0) {
+			VL53L0_COPYSTRING(pVL53L0_DeviceInfo->Name,
+					VL53L0_STRING_DEVICE_INFO_NAME_TS0);
+		} else if ((Revision <= 34) && (Revision != 32)) {
+			VL53L0_COPYSTRING(pVL53L0_DeviceInfo->Name,
+					VL53L0_STRING_DEVICE_INFO_NAME_TS1);
+		} else if (Revision < 39) {
+			VL53L0_COPYSTRING(pVL53L0_DeviceInfo->Name,
+					VL53L0_STRING_DEVICE_INFO_NAME_TS2);
+		} else {
+			VL53L0_COPYSTRING(pVL53L0_DeviceInfo->Name,
+					VL53L0_STRING_DEVICE_INFO_NAME_ES1);
+		}
+
+		VL53L0_COPYSTRING(pVL53L0_DeviceInfo->Type,
+				VL53L0_STRING_DEVICE_INFO_TYPE);
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdByte(Dev, VL53L0_REG_IDENTIFICATION_MODEL_ID,
+				&pVL53L0_DeviceInfo->ProductType);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = VL53L0_RdByte(Dev,
+			VL53L0_REG_IDENTIFICATION_REVISION_ID,
+				&revision_id);
+		pVL53L0_DeviceInfo->ProductRevisionMajor = 1;
+		pVL53L0_DeviceInfo->ProductRevisionMinor =
+					(revision_id & 0xF0) >> 4;
+	}
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_get_device_error_string(VL53L0_DeviceError ErrorCode,
+		char *pDeviceErrorString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	switch (ErrorCode) {
+	case VL53L0_DEVICEERROR_NONE:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_NONE);
+	break;
+	case VL53L0_DEVICEERROR_VCSELCONTINUITYTESTFAILURE:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_VCSELCONTINUITYTESTFAILURE);
+	break;
+	case VL53L0_DEVICEERROR_VCSELWATCHDOGTESTFAILURE:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_VCSELWATCHDOGTESTFAILURE);
+	break;
+	case VL53L0_DEVICEERROR_NOVHVVALUEFOUND:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_NOVHVVALUEFOUND);
+	break;
+	case VL53L0_DEVICEERROR_MSRCNOTARGET:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_MSRCNOTARGET);
+	break;
+	case VL53L0_DEVICEERROR_SNRCHECK:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_SNRCHECK);
+	break;
+	case VL53L0_DEVICEERROR_RANGEPHASECHECK:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_RANGEPHASECHECK);
+	break;
+	case VL53L0_DEVICEERROR_SIGMATHRESHOLDCHECK:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_SIGMATHRESHOLDCHECK);
+	break;
+	case VL53L0_DEVICEERROR_TCC:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_TCC);
+	break;
+	case VL53L0_DEVICEERROR_PHASECONSISTENCY:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_PHASECONSISTENCY);
+	break;
+	case VL53L0_DEVICEERROR_MINCLIP:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_MINCLIP);
+	break;
+	case VL53L0_DEVICEERROR_RANGECOMPLETE:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_RANGECOMPLETE);
+	break;
+	case VL53L0_DEVICEERROR_ALGOUNDERFLOW:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_ALGOUNDERFLOW);
+	break;
+	case VL53L0_DEVICEERROR_ALGOOVERFLOW:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_ALGOOVERFLOW);
+	break;
+	case VL53L0_DEVICEERROR_RANGEIGNORETHRESHOLD:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_DEVICEERROR_RANGEIGNORETHRESHOLD);
+	break;
+
+	default:
+		VL53L0_COPYSTRING(pDeviceErrorString,
+			VL53L0_STRING_UNKNOW_ERROR_CODE);
+
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_range_status_string(uint8_t RangeStatus,
+		char *pRangeStatusString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	switch (RangeStatus) {
+	case 0:
+		VL53L0_COPYSTRING(pRangeStatusString,
+			VL53L0_STRING_RANGESTATUS_RANGEVALID);
+	break;
+	case 1:
+		VL53L0_COPYSTRING(pRangeStatusString,
+			VL53L0_STRING_RANGESTATUS_SIGMA);
+	break;
+	case 2:
+		VL53L0_COPYSTRING(pRangeStatusString,
+			VL53L0_STRING_RANGESTATUS_SIGNAL);
+	break;
+	case 3:
+		VL53L0_COPYSTRING(pRangeStatusString,
+			VL53L0_STRING_RANGESTATUS_MINRANGE);
+	break;
+	case 4:
+		VL53L0_COPYSTRING(pRangeStatusString,
+			VL53L0_STRING_RANGESTATUS_PHASE);
+	break;
+	case 5:
+		VL53L0_COPYSTRING(pRangeStatusString,
+			VL53L0_STRING_RANGESTATUS_HW);
+	break;
+
+	default: /**/
+		VL53L0_COPYSTRING(pRangeStatusString,
+				VL53L0_STRING_RANGESTATUS_NONE);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_pal_error_string(VL53L0_Error PalErrorCode,
+		char *pPalErrorString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	switch (PalErrorCode) {
+	case VL53L0_ERROR_NONE:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_NONE);
+	break;
+	case VL53L0_ERROR_CALIBRATION_WARNING:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_CALIBRATION_WARNING);
+	break;
+	case VL53L0_ERROR_MIN_CLIPPED:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_MIN_CLIPPED);
+	break;
+	case VL53L0_ERROR_UNDEFINED:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_UNDEFINED);
+	break;
+	case VL53L0_ERROR_INVALID_PARAMS:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_INVALID_PARAMS);
+	break;
+	case VL53L0_ERROR_NOT_SUPPORTED:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_NOT_SUPPORTED);
+	break;
+	case VL53L0_ERROR_INTERRUPT_NOT_CLEARED:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_INTERRUPT_NOT_CLEARED);
+	break;
+	case VL53L0_ERROR_RANGE_ERROR:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_RANGE_ERROR);
+	break;
+	case VL53L0_ERROR_TIME_OUT:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_TIME_OUT);
+	break;
+	case VL53L0_ERROR_MODE_NOT_SUPPORTED:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_MODE_NOT_SUPPORTED);
+	break;
+	case VL53L0_ERROR_BUFFER_TOO_SMALL:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_BUFFER_TOO_SMALL);
+	break;
+	case VL53L0_ERROR_GPIO_NOT_EXISTING:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_GPIO_NOT_EXISTING);
+	break;
+	case VL53L0_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_GPIO_FUNCTIONALITY_NOT_SUPPORTED);
+	break;
+	case VL53L0_ERROR_CONTROL_INTERFACE:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_CONTROL_INTERFACE);
+	break;
+	case VL53L0_ERROR_INVALID_COMMAND:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_INVALID_COMMAND);
+	break;
+	case VL53L0_ERROR_DIVISION_BY_ZERO:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_DIVISION_BY_ZERO);
+	break;
+	case VL53L0_ERROR_REF_SPAD_INIT:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_REF_SPAD_INIT);
+	break;
+	case VL53L0_ERROR_NOT_IMPLEMENTED:
+		VL53L0_COPYSTRING(pPalErrorString,
+			VL53L0_STRING_ERROR_NOT_IMPLEMENTED);
+	break;
+
+	default:
+		VL53L0_COPYSTRING(pPalErrorString,
+				VL53L0_STRING_UNKNOW_ERROR_CODE);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_pal_state_string(VL53L0_State PalStateCode,
+		char *pPalStateString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	switch (PalStateCode) {
+	case VL53L0_STATE_POWERDOWN:
+		VL53L0_COPYSTRING(pPalStateString,
+			VL53L0_STRING_STATE_POWERDOWN);
+	break;
+	case VL53L0_STATE_WAIT_STATICINIT:
+		VL53L0_COPYSTRING(pPalStateString,
+			VL53L0_STRING_STATE_WAIT_STATICINIT);
+	break;
+	case VL53L0_STATE_STANDBY:
+		VL53L0_COPYSTRING(pPalStateString,
+			VL53L0_STRING_STATE_STANDBY);
+	break;
+	case VL53L0_STATE_IDLE:
+		VL53L0_COPYSTRING(pPalStateString,
+			VL53L0_STRING_STATE_IDLE);
+	break;
+	case VL53L0_STATE_RUNNING:
+		VL53L0_COPYSTRING(pPalStateString,
+			VL53L0_STRING_STATE_RUNNING);
+	break;
+	case VL53L0_STATE_UNKNOWN:
+		VL53L0_COPYSTRING(pPalStateString,
+			VL53L0_STRING_STATE_UNKNOWN);
+	break;
+	case VL53L0_STATE_ERROR:
+		VL53L0_COPYSTRING(pPalStateString,
+			VL53L0_STRING_STATE_ERROR);
+	break;
+
+	default:
+		VL53L0_COPYSTRING(pPalStateString,
+			VL53L0_STRING_STATE_UNKNOWN);
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
+
+VL53L0_Error VL53L0_get_sequence_steps_info(
+		VL53L0_SequenceStepId SequenceStepId,
+		char *pSequenceStepsString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	switch (SequenceStepId) {
+	case VL53L0_SEQUENCESTEP_TCC:
+		VL53L0_COPYSTRING(pSequenceStepsString,
+			VL53L0_STRING_SEQUENCESTEP_TCC);
+	break;
+	case VL53L0_SEQUENCESTEP_DSS:
+		VL53L0_COPYSTRING(pSequenceStepsString,
+			VL53L0_STRING_SEQUENCESTEP_DSS);
+	break;
+	case VL53L0_SEQUENCESTEP_MSRC:
+		VL53L0_COPYSTRING(pSequenceStepsString,
+			VL53L0_STRING_SEQUENCESTEP_MSRC);
+	break;
+	case VL53L0_SEQUENCESTEP_PRE_RANGE:
+		VL53L0_COPYSTRING(pSequenceStepsString,
+			VL53L0_STRING_SEQUENCESTEP_PRE_RANGE);
+	break;
+	case VL53L0_SEQUENCESTEP_FINAL_RANGE:
+		VL53L0_COPYSTRING(pSequenceStepsString,
+			VL53L0_STRING_SEQUENCESTEP_FINAL_RANGE);
+	break;
+
+	default:
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+	}
+
+	LOG_FUNCTION_END(Status);
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_get_limit_check_info(VL53L0_DEV Dev, uint16_t LimitCheckId,
+	char *pLimitCheckString)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+
+	switch (LimitCheckId) {
+	case VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE:
+		VL53L0_COPYSTRING(pLimitCheckString,
+			VL53L0_STRING_CHECKENABLE_SIGMA_FINAL_RANGE);
+	break;
+	case VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE:
+		VL53L0_COPYSTRING(pLimitCheckString,
+			VL53L0_STRING_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE);
+	break;
+	case VL53L0_CHECKENABLE_SIGNAL_REF_CLIP:
+		VL53L0_COPYSTRING(pLimitCheckString,
+			VL53L0_STRING_CHECKENABLE_SIGNAL_REF_CLIP);
+	break;
+	case VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD:
+		VL53L0_COPYSTRING(pLimitCheckString,
+			VL53L0_STRING_CHECKENABLE_RANGE_IGNORE_THRESHOLD);
+	break;
+
+	case VL53L0_CHECKENABLE_SIGNAL_RATE_MSRC:
+		VL53L0_COPYSTRING(pLimitCheckString,
+			VL53L0_STRING_CHECKENABLE_SIGNAL_RATE_MSRC);
+	break;
+
+	case VL53L0_CHECKENABLE_SIGNAL_RATE_PRE_RANGE:
+		VL53L0_COPYSTRING(pLimitCheckString,
+			VL53L0_STRING_CHECKENABLE_SIGNAL_RATE_PRE_RANGE);
+	break;
+
+	default:
+		VL53L0_COPYSTRING(pLimitCheckString,
+			VL53L0_STRING_UNKNOW_ERROR_CODE);
+
+	}
+
+	LOG_FUNCTION_END(Status);
+	return Status;
+}
diff --git a/drivers/input/misc/vl53L0/src/vl53l0_i2c_platform.c b/drivers/input/misc/vl53L0/src/vl53l0_i2c_platform.c
new file mode 100644
index 000000000000..e4097e1ccdd5
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l0_i2c_platform.c
@@ -0,0 +1,383 @@
+/*
+ *  Copyright (C) 2016 STMicroelectronics Imaging Division.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+
+/*!
+ * \file   VL53L0_i2c_platform.c
+ * \brief  Code function defintions for EWOK Platform Layer
+ *
+ */
+
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include "stmvl53l0-i2c.h"
+#include "stmvl53l0-cci.h"
+
+#include "vl53l0_platform.h"
+#include "vl53l0_i2c_platform.h"
+#include "vl53l0_def.h"
+
+#include "vl53l0_platform_log.h"
+
+#ifdef VL53L0_LOG_ENABLE
+#define trace_print(level, ...) \
+	trace_print_module_function(TRACE_MODULE_PLATFORM, level,\
+	TRACE_FUNCTION_NONE, ##__VA_ARGS__)
+#define trace_i2c(...) \
+	trace_print_module_function(TRACE_MODULE_NONE, \
+	TRACE_LEVEL_NONE, TRACE_FUNCTION_I2C, ##__VA_ARGS__)
+#endif
+
+/**
+ * @def I2C_BUFFER_CONFIG
+ *
+ * @brief Configure Device register I2C access
+ *
+ * @li 0 : one GLOBAL buffer \n
+ *   Use one global buffer of MAX_I2C_XFER_SIZE byte in data space \n
+ *   This solution is not multi-Device compliant nor multi-thread cpu safe \n
+ *   It can be the best option for small 8/16 bit MCU without stack and limited
+ *   ram  (STM8s, 80C51 ...)
+ *
+ * @li 1 : ON_STACK/local \n
+ *   Use local variable (on stack) buffer \n
+ *   This solution is multi-thread with use of i2c resource lock or mutex see
+ *   VL6180x_GetI2CAccess() \n
+ *
+ * @li 2 : User defined \n
+ *    Per Device potentially dynamic allocated. Requires VL6180x_GetI2cBuffer()
+ *    to be implemented.
+ * @ingroup Configuration
+ */
+#define I2C_BUFFER_CONFIG 1
+
+#if I2C_BUFFER_CONFIG == 0
+    /* GLOBAL config buffer */
+	uint8_t i2c_global_buffer[VL53L0_MAX_I2C_XFER_SIZE];
+
+    #define DECL_I2C_BUFFER
+    #define VL53L0_GetLocalBuffer(Dev, n_byte)  i2c_global_buffer
+
+#elif I2C_BUFFER_CONFIG == 1
+    /* ON STACK */
+	uint8_t LocBuffer[VL53L0_MAX_I2C_XFER_SIZE];
+    #define VL53L0_GetLocalBuffer(Dev, n_byte)  LocBuffer
+#elif I2C_BUFFER_CONFIG == 2
+    /* user define buffer type declare DECL_I2C_BUFFER  as access  via
+     * VL53L0_GetLocalBuffer
+     */
+    #define DECL_I2C_BUFFER
+#else
+#error "invalid I2C_BUFFER_CONFIG "
+#endif
+
+
+/* none but could be for a flag var to
+ * get/pass to mutex interruptible  return flags and try again
+ */
+#define VL53L0_I2C_USER_VAR
+#define VL53L0_GetI2CAccess(Dev)    /* todo mutex acquire */
+#define VL53L0_DoneI2CAcces(Dev)    /* todo mutex release */
+
+
+char  debug_string[VL53L0_MAX_STRING_LENGTH_PLT];
+
+
+#define MIN_COMMS_VERSION_MAJOR     1
+#define MIN_COMMS_VERSION_MINOR     8
+#define MIN_COMMS_VERSION_BUILD     1
+#define MIN_COMMS_VERSION_REVISION  0
+
+#define STATUS_OK              0x00
+#define STATUS_FAIL            0x01
+
+bool_t _check_min_version(void)
+{
+	bool_t min_version_comms_dll = false;
+
+	min_version_comms_dll = true;
+
+	return min_version_comms_dll;
+}
+
+int32_t VL53L0_comms_initialise(uint8_t comms_type, uint16_t comms_speed_khz)
+{
+	int32_t status   = STATUS_OK;
+
+	return status;
+}
+
+int32_t VL53L0_comms_close(void)
+{
+	int32_t status = STATUS_OK;
+
+
+	return status;
+}
+
+int32_t VL53L0_set_page(VL53L0_DEV dev, uint8_t page_data)
+{
+	int32_t status = STATUS_OK;
+	uint16_t page_index = 0xFF;
+	uint8_t *buffer;
+
+	buffer =  VL53L0_GetLocalBuffer(dev, 3);
+	buffer[0] = page_index >> 8;
+	buffer[1] = page_index & 0xff;
+	buffer[2] = page_data;
+
+	status = VL53L0_I2CWrite(dev, buffer, (uint8_t) 3);
+	return status;
+}
+
+int32_t VL53L0_write_multi(VL53L0_DEV dev, uint8_t index, uint8_t *pdata,
+			int32_t count)
+{
+	int32_t status = STATUS_OK;
+	uint8_t *buffer;
+
+#ifdef VL53L0_LOG_ENABLE
+	int32_t i = 0;
+	char value_as_str[VL53L0_MAX_STRING_LENGTH_PLT];
+	char *pvalue_as_str;
+
+	pvalue_as_str =  value_as_str;
+
+	for (i = 0 ; i < count ; i++) {
+		snprintf(pvalue_as_str, sizeof(pvalue_as_str),
+			"%02X", *(pdata + i));
+
+		pvalue_as_str += 2;
+	}
+	trace_i2c("Write reg : 0x%04X, Val : 0x%s\n", index, value_as_str);
+#endif
+	if ((count + 1) > VL53L0_MAX_I2C_XFER_SIZE)
+		return STATUS_FAIL;
+	buffer =  VL53L0_GetLocalBuffer(dev, (count+1));
+	buffer[0] = index;
+	memcpy(&buffer[1], pdata, count);
+	status = VL53L0_I2CWrite(dev, buffer, (count+1));
+
+	return status;
+}
+
+int32_t VL53L0_read_multi(VL53L0_DEV dev, uint8_t index, uint8_t *pdata,
+			int32_t count)
+{
+	int32_t status = STATUS_OK;
+	uint8_t *buffer;
+
+#ifdef VL53L0_LOG_ENABLE
+	int32_t      i = 0;
+	char   value_as_str[VL53L0_MAX_STRING_LENGTH_PLT];
+	char *pvalue_as_str;
+#endif
+
+	if ((count + 1) > VL53L0_MAX_I2C_XFER_SIZE)
+		return STATUS_FAIL;
+
+	buffer =  VL53L0_GetLocalBuffer(dev, 1);
+	buffer[0] = index;
+	status = VL53L0_I2CWrite(dev, (uint8_t *)buffer, (uint8_t)1);
+	if (!status) {
+		pdata[0] = index;
+		status = VL53L0_I2CRead(dev, pdata, count);
+	}
+
+#ifdef VL53L0_LOG_ENABLE
+	pvalue_as_str =  value_as_str;
+
+	for (i = 0 ; i < count ; i++) {
+		snprintf(pvalue_as_str, sizeof(value_as_str),
+			"%02X", *(pdata+i));
+		pvalue_as_str += 2;
+	}
+
+	trace_i2c("Read  reg : 0x%04X, Val : 0x%s\n", index, value_as_str);
+#endif
+
+	return status;
+}
+
+
+int32_t VL53L0_write_byte(VL53L0_DEV dev, uint8_t index, uint8_t data)
+{
+	int32_t status = STATUS_OK;
+	const int32_t cbyte_count = 1;
+
+	status = VL53L0_write_multi(dev, index, &data, cbyte_count);
+
+	return status;
+
+}
+
+
+int32_t VL53L0_write_word(VL53L0_DEV dev, uint8_t index, uint16_t data)
+{
+	int32_t status = STATUS_OK;
+
+	uint8_t  buffer[BYTES_PER_WORD];
+
+	/* Split 16-bit word into MS and LS uint8_t */
+	buffer[0] = (uint8_t)(data >> 8);
+	buffer[1] = (uint8_t)(data &  0x00FF);
+
+	status = VL53L0_write_multi(dev, index, buffer, BYTES_PER_WORD);
+
+	return status;
+
+}
+
+
+int32_t VL53L0_write_dword(VL53L0_DEV dev, uint8_t index, uint32_t data)
+{
+	int32_t status = STATUS_OK;
+	uint8_t  buffer[BYTES_PER_DWORD];
+
+	/* Split 32-bit word into MS ... LS bytes */
+	buffer[0] = (uint8_t) (data >> 24);
+	buffer[1] = (uint8_t)((data &  0x00FF0000) >> 16);
+	buffer[2] = (uint8_t)((data &  0x0000FF00) >> 8);
+	buffer[3] = (uint8_t) (data &  0x000000FF);
+
+	status = VL53L0_write_multi(dev, index, buffer, BYTES_PER_DWORD);
+
+	return status;
+
+}
+
+
+int32_t VL53L0_read_byte(VL53L0_DEV dev, uint8_t index, uint8_t *pdata)
+{
+	int32_t status = STATUS_OK;
+	int32_t cbyte_count = 1;
+
+	status = VL53L0_read_multi(dev, index, pdata, cbyte_count);
+
+	return status;
+
+}
+
+
+int32_t VL53L0_read_word(VL53L0_DEV dev, uint8_t index, uint16_t *pdata)
+{
+	int32_t  status = STATUS_OK;
+	uint8_t  buffer[BYTES_PER_WORD];
+
+	status = VL53L0_read_multi(dev, index, buffer, BYTES_PER_WORD);
+	*pdata = ((uint16_t)buffer[0]<<8) + (uint16_t)buffer[1];
+
+	return status;
+
+}
+
+int32_t VL53L0_read_dword(VL53L0_DEV dev, uint8_t index, uint32_t *pdata)
+{
+	int32_t status = STATUS_OK;
+	uint8_t  buffer[BYTES_PER_DWORD];
+
+	status = VL53L0_read_multi(dev, index, buffer, BYTES_PER_DWORD);
+	*pdata = ((uint32_t)buffer[0]<<24) + ((uint32_t)buffer[1]<<16) +
+			((uint32_t)buffer[2]<<8) + (uint32_t)buffer[3];
+
+	return status;
+
+}
+
+int32_t VL53L0_platform_wait_us(int32_t wait_us)
+{
+	int32_t status = STATUS_OK;
+
+	msleep((wait_us/1000));
+
+#ifdef VL53L0_LOG_ENABLE
+	trace_i2c("Wait us : %6d\n", wait_us);
+#endif
+
+	return status;
+
+}
+
+
+int32_t VL53L0_wait_ms(int32_t wait_ms)
+{
+	int32_t status = STATUS_OK;
+
+	msleep(wait_ms);
+
+#ifdef VL53L0_LOG_ENABLE
+	trace_i2c("Wait ms : %6d\n", wait_ms);
+#endif
+
+	return status;
+
+}
+
+
+int32_t VL53L0_set_gpio(uint8_t level)
+{
+	int32_t status = STATUS_OK;
+#ifdef VL53L0_LOG_ENABLE
+	trace_i2c("// Set GPIO = %d;\n", level);
+#endif
+
+	return status;
+
+}
+
+
+int32_t VL53L0_get_gpio(uint8_t *plevel)
+{
+	int32_t status = STATUS_OK;
+#ifdef VL53L0_LOG_ENABLE
+	trace_i2c("// Get GPIO = %d;\n", *plevel);
+#endif
+	return status;
+}
+
+
+int32_t VL53L0_release_gpio(void)
+{
+	int32_t status = STATUS_OK;
+#ifdef VL53L0_LOG_ENABLE
+	trace_i2c("// Releasing force on GPIO\n");
+#endif
+	return status;
+
+}
+
+int32_t VL53L0_cycle_power(void)
+{
+	int32_t status = STATUS_OK;
+#ifdef VL53L0_LOG_ENABLE
+	trace_i2c("// cycle sensor power\n");
+#endif
+
+	return status;
+}
+
+
+int32_t VL53L0_get_timer_frequency(int32_t *ptimer_freq_hz)
+{
+	*ptimer_freq_hz = 0;
+	return STATUS_FAIL;
+}
+
+
+int32_t VL53L0_get_timer_value(int32_t *ptimer_count)
+{
+	*ptimer_count = 0;
+	return STATUS_FAIL;
+}
diff --git a/drivers/input/misc/vl53L0/src/vl53l0_platform.c b/drivers/input/misc/vl53L0/src/vl53l0_platform.c
new file mode 100644
index 000000000000..f7292ab6f8f2
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l0_platform.c
@@ -0,0 +1,242 @@
+/*******************************************************************************
+ * Copyright © 2016, STMicroelectronics International N.V.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of STMicroelectronics nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS ARE DISCLAIMED.
+IN NO EVENT SHALL STMICROELECTRONICS INTERNATIONAL N.V. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+/**
+ * @file VL53L0_i2c.c
+ *
+ * Copyright (C) 2014 ST MicroElectronics
+ *
+ * provide variable word size byte/Word/dword VL6180x register access via i2c
+ *
+ */
+#include "vl53l0_platform.h"
+#include "vl53l0_i2c_platform.h"
+#include "vl53l0_api.h"
+
+#define LOG_FUNCTION_START(fmt, ...) \
+		_LOG_FUNCTION_START(TRACE_MODULE_PLATFORM, fmt, ##__VA_ARGS__)
+#define LOG_FUNCTION_END(status, ...) \
+		_LOG_FUNCTION_END(TRACE_MODULE_PLATFORM, status, ##__VA_ARGS__)
+#define LOG_FUNCTION_END_FMT(status, fmt, ...)\
+		_LOG_FUNCTION_END_FMT(TRACE_MODULE_PLATFORM, status,\
+		fmt, ##__VA_ARGS__)
+
+
+
+VL53L0_Error VL53L0_LockSequenceAccess(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_UnlockSequenceAccess(VL53L0_DEV Dev)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	return Status;
+}
+
+/* the ranging_sensor_comms.dll will take care of the page selection */
+VL53L0_Error VL53L0_WriteMulti(VL53L0_DEV Dev, uint8_t index,
+				uint8_t *pdata, uint32_t count)
+{
+
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t status_int = 0;
+	uint8_t deviceAddress;
+
+	if (count >= VL53L0_MAX_I2C_XFER_SIZE)
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+
+
+	deviceAddress = Dev->I2cDevAddr;
+
+	status_int = VL53L0_write_multi(Dev, index, pdata, count);
+
+	if (status_int != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	return Status;
+}
+
+/* the ranging_sensor_comms.dll will take care of the page selection */
+VL53L0_Error VL53L0_ReadMulti(VL53L0_DEV Dev, uint8_t index,
+				uint8_t *pdata, uint32_t count)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t status_int;
+	uint8_t deviceAddress;
+
+	if (count >= VL53L0_MAX_I2C_XFER_SIZE)
+		Status = VL53L0_ERROR_INVALID_PARAMS;
+
+
+	deviceAddress = Dev->I2cDevAddr;
+
+	status_int = VL53L0_read_multi(Dev, index, pdata, count);
+
+	if (status_int != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	return Status;
+}
+
+
+VL53L0_Error VL53L0_WrByte(VL53L0_DEV Dev, uint8_t index, uint8_t data)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t status_int;
+	uint8_t deviceAddress;
+
+	deviceAddress = Dev->I2cDevAddr;
+
+	status_int = VL53L0_write_byte(Dev, index, data);
+
+	if (status_int != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_WrWord(VL53L0_DEV Dev, uint8_t index, uint16_t data)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t status_int;
+	uint8_t deviceAddress;
+
+	deviceAddress = Dev->I2cDevAddr;
+
+	status_int = VL53L0_write_word(Dev, index, data);
+
+	if (status_int != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_WrDWord(VL53L0_DEV Dev, uint8_t index, uint32_t data)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t status_int;
+	uint8_t deviceAddress;
+
+	deviceAddress = Dev->I2cDevAddr;
+
+	status_int = VL53L0_write_dword(Dev, index, data);
+
+	if (status_int != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_UpdateByte(VL53L0_DEV Dev, uint8_t index,
+				uint8_t AndData, uint8_t OrData)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t status_int;
+	uint8_t deviceAddress;
+	uint8_t data;
+
+	deviceAddress = Dev->I2cDevAddr;
+
+	status_int = VL53L0_read_byte(Dev, index, &data);
+
+	if (status_int != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	if (Status == VL53L0_ERROR_NONE) {
+		data = (data & AndData) | OrData;
+		status_int = VL53L0_write_byte(Dev, index, data);
+
+		if (status_int != 0)
+			Status = VL53L0_ERROR_CONTROL_INTERFACE;
+	}
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_RdByte(VL53L0_DEV Dev, uint8_t index, uint8_t *data)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t status_int;
+	uint8_t deviceAddress;
+
+	deviceAddress = Dev->I2cDevAddr;
+
+	status_int = VL53L0_read_byte(Dev, index, data);
+
+	if (status_int != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	return Status;
+}
+
+VL53L0_Error VL53L0_RdWord(VL53L0_DEV Dev, uint8_t index, uint16_t *data)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t status_int;
+	uint8_t deviceAddress;
+
+	deviceAddress = Dev->I2cDevAddr;
+
+	status_int = VL53L0_read_word(Dev, index, data);
+
+	if (status_int != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	return Status;
+}
+
+VL53L0_Error  VL53L0_RdDWord(VL53L0_DEV Dev, uint8_t index, uint32_t *data)
+{
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int32_t status_int;
+	uint8_t deviceAddress;
+
+	deviceAddress = Dev->I2cDevAddr;
+
+	status_int = VL53L0_read_dword(Dev, index, data);
+
+	if (status_int != 0)
+		Status = VL53L0_ERROR_CONTROL_INTERFACE;
+
+	return Status;
+}
+
+#define VL53L0_POLLINGDELAY_LOOPNB  250
+VL53L0_Error VL53L0_PollingDelay(VL53L0_DEV Dev)
+{
+	VL53L0_Error status = VL53L0_ERROR_NONE;
+
+	LOG_FUNCTION_START("");
+	usleep_range(950, 1000);
+	LOG_FUNCTION_END(status);
+	return status;
+}
diff --git a/drivers/input/misc/vl53L0/src/vl53l0_port_i2c.c b/drivers/input/misc/vl53L0/src/vl53l0_port_i2c.c
new file mode 100644
index 000000000000..3dc085f60326
--- /dev/null
+++ b/drivers/input/misc/vl53L0/src/vl53l0_port_i2c.c
@@ -0,0 +1,155 @@
+/*
+ * vl53l0_port_i2c.c
+ *
+ *  Created on: July, 2015
+ *      Author:  Teresa Tao
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include "stmvl53l0-i2c.h"
+#include "stmvl53l0-cci.h"
+#include "vl53l0_platform.h"
+#include "vl53l0_i2c_platform.h"
+#include "stmvl53l0.h"
+
+#define I2C_M_WR			0x00
+#define STATUS_OK			0x00
+#define STATUS_FAIL			(-1)
+/** int  VL53L0_I2CWrite(VL53L0_Dev_t dev, void *buff, uint8_t len);
+ * @brief       Write data buffer to VL53L0 device via i2c
+ * @param dev   The device to write to
+ * @param buff  The data buffer
+ * @param len   The length of the transaction in byte
+ * @return      0 on success
+ */
+int VL53L0_I2CWrite(VL53L0_DEV dev, uint8_t *buff, uint8_t len)
+{
+	int err = 0;
+
+	if (dev->bus_type == CCI_BUS) {
+#ifdef CAMERA_CCI
+		uint16_t index;
+		struct cci_data *cci_client_obj =
+			(struct cci_data *)dev->client_object;
+		struct msm_camera_i2c_client *client = cci_client_obj->client;
+
+		index = buff[0];
+		/*pr_err("%s: index: %d len: %d\n", __func__, index, len); */
+
+		if (len == 2) {
+			uint8_t data;
+
+			data = buff[1];
+			/* for byte access */
+			err = client->i2c_func_tbl->i2c_write(client, index,
+					data, MSM_CAMERA_I2C_BYTE_DATA);
+			if (err < 0) {
+				pr_err("%s:%d failed status=%d\n",
+					__func__, __LINE__, err);
+				return err;
+			}
+		} else if (len == 3) {
+			uint16_t data;
+
+			data = ((uint16_t)buff[1] << 8) | (uint16_t)buff[2];
+			err = client->i2c_func_tbl->i2c_write(client, index,
+					data, MSM_CAMERA_I2C_WORD_DATA);
+			if (err < 0) {
+				pr_err("%s:%d failed status=%d\n",
+					__func__, __LINE__, err);
+				return err;
+			}
+		} else if (len >= 5) {
+			err = client->i2c_func_tbl->i2c_write_seq(client,
+					index, &buff[1], (len-1));
+			if (err < 0) {
+				pr_err("%s:%d failed status=%d\n",
+					__func__, __LINE__, err);
+				return err;
+			}
+
+		}
+#endif
+#ifndef CAMERA_CCI
+	} else {
+		struct i2c_msg msg[1];
+		struct i2c_data *i2c_client_obj =
+					(struct i2c_data *)dev->client_object;
+		struct i2c_client *client =
+			(struct i2c_client *)i2c_client_obj->client;
+
+		msg[0].addr = client->addr;
+		msg[0].flags = I2C_M_WR;
+		msg[0].buf = buff;
+		msg[0].len = len;
+
+		err = i2c_transfer(client->adapter, msg, 1);
+		/* return the actual messages transfer */
+		if (err != 1) {
+			pr_err("%s: i2c_transfer err:%d, addr:0x%x, reg:0x%x\n",
+				__func__, err, client->addr,
+				(buff[0] << 8 | buff[1]));
+			return STATUS_FAIL;
+		}
+#endif
+	}
+
+	return 0;
+}
+
+
+/** int VL53L0_I2CRead(VL53L0_Dev_t dev, void *buff, uint8_t len);
+ * @brief       Read data buffer from VL53L0 device via i2c
+ * @param dev   The device to read from
+ * @param buff  The data buffer to fill
+ * @param len   The length of the transaction in byte
+ * @return      transaction status
+ */
+int VL53L0_I2CRead(VL53L0_DEV dev, uint8_t *buff, uint8_t len)
+{
+
+	int err = 0;
+
+	if (dev->bus_type == CCI_BUS) {
+#ifdef CAMERA_CCI
+		uint16_t index;
+		struct cci_data *cci_client_obj =
+				(struct cci_data *)dev->client_object;
+		struct msm_camera_i2c_client *client = cci_client_obj->client;
+
+		index = buff[0];
+		/* pr_err("%s: index: %d\n", __func__, index); */
+		err = client->i2c_func_tbl->i2c_read_seq(client,
+							index, buff, len);
+		if (err < 0) {
+			pr_err("%s:%d failed status=%d\n",
+					__func__, __LINE__, err);
+			return err;
+		}
+#endif
+	} else {
+#ifndef CAMERA_CCI
+		struct i2c_msg msg[1];
+		struct i2c_data *i2c_client_obj =
+				(struct i2c_data *)dev->client_object;
+		struct i2c_client *client =
+			(struct i2c_client *) i2c_client_obj->client;
+
+		msg[0].addr = client->addr;
+		msg[0].flags = I2C_M_RD|client->flags;
+		msg[0].buf = buff;
+		msg[0].len = len;
+
+		err = i2c_transfer(client->adapter, &msg[0], 1);
+		/* return the actual mesage transfer */
+		if (err != 1) {
+			pr_err("%s: Read i2c_transfer err:%d, addr:0x%x\n",
+				__func__, err, client->addr);
+			return STATUS_FAIL;
+		}
+#endif
+	}
+
+	return 0;
+}
diff --git a/drivers/input/misc/vl53L0/stmvl53l0-cci.h b/drivers/input/misc/vl53L0/stmvl53l0-cci.h
new file mode 100644
index 000000000000..51477701cb1d
--- /dev/null
+++ b/drivers/input/misc/vl53L0/stmvl53l0-cci.h
@@ -0,0 +1,61 @@
+/*
+ *  stmvl53l0-cci.h - Linux kernel modules for STM VL53L0 FlightSense TOF sensor
+ *
+ *  Copyright (C) 2016 STMicroelectronics Imaging Division
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+/*
+ * Defines
+ */
+#ifndef STMVL53L0_CCI_H
+#define STMVL53L0_CCI_H
+#include <linux/types.h>
+
+#ifdef CAMERA_CCI
+#include <soc/qcom/camera2.h>
+#include "msm_camera_i2c.h"
+#include "msm_camera_dt_util.h"
+#include "msm_camera_io_util.h"
+#include "msm_cci.h"
+
+#define	MSM_TOF_MAX_VREGS (10)
+
+struct msm_tof_vreg {
+	struct camera_vreg_t *cam_vreg;
+	void *data[MSM_TOF_MAX_VREGS];
+	int num_vreg;
+};
+
+struct cci_data {
+	struct msm_camera_i2c_client g_client;
+	struct msm_camera_i2c_client *client;
+	struct platform_device *pdev;
+	enum msm_camera_device_type_t device_type;
+	enum cci_i2c_master_t cci_master;
+	struct msm_tof_vreg vreg_cfg;
+	struct msm_sd_subdev msm_sd;
+	struct v4l2_subdev sdev;
+	struct v4l2_subdev_ops *subdev_ops;
+	char subdev_initialized;
+	uint32_t subdev_id;
+	uint8_t power_up;
+	struct msm_camera_gpio_conf *gconf;
+	struct msm_pinctrl_info pinctrl_info;
+	uint8_t cam_pinctrl_status;
+
+};
+int stmvl53l0_init_cci(void);
+void stmvl53l0_exit_cci(void *);
+int stmvl53l0_power_down_cci(void *);
+int stmvl53l0_power_up_cci(void *, unsigned int *);
+#endif /* CAMERA_CCI */
+#endif /* STMVL53L0_CCI_H */
diff --git a/drivers/input/misc/vl53L0/stmvl53l0-i2c.h b/drivers/input/misc/vl53L0/stmvl53l0-i2c.h
new file mode 100644
index 000000000000..51a02c60802b
--- /dev/null
+++ b/drivers/input/misc/vl53L0/stmvl53l0-i2c.h
@@ -0,0 +1,35 @@
+/*
+ *  stmvl53l0-i2c.h - Linux kernel modules for STM VL53L0 FlightSense TOF sensor
+ *
+ *  Copyright (C) 2016 STMicroelectronics Imaging Division
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+/*
+ * Defines
+ */
+#ifndef STMVL53L0_I2C_H
+#define STMVL53L0_I2C_H
+#include <linux/types.h>
+
+#ifndef CAMERA_CCI
+struct i2c_data {
+	struct i2c_client *client;
+	struct regulator *vana;
+	uint8_t power_up;
+};
+int stmvl53l0_init_i2c(void);
+void stmvl53l0_exit_i2c(void *);
+int stmvl53l0_power_up_i2c(void *, unsigned int *);
+int stmvl53l0_power_down_i2c(void *);
+
+#endif /* NOT CAMERA_CCI */
+#endif /* STMVL53L0_I2C_H */
diff --git a/drivers/input/misc/vl53L0/stmvl53l0.h b/drivers/input/misc/vl53L0/stmvl53l0.h
new file mode 100644
index 000000000000..ae517ebe461a
--- /dev/null
+++ b/drivers/input/misc/vl53L0/stmvl53l0.h
@@ -0,0 +1,217 @@
+/*
+ *  stmvl53l0.h - Linux kernel modules for STM VL53L0 FlightSense TOF sensor
+ *
+ *  Copyright (C) 2016 STMicroelectronics Imaging Division
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+/*
+ * Defines
+ */
+#ifndef STMVL53L0_H
+#define STMVL53L0_H
+
+#include <linux/types.h>
+#include <linux/mutex.h>
+#include <linux/workqueue.h>
+#include <linux/miscdevice.h>
+#include <linux/wait.h>
+
+
+#define STMVL53L0_DRV_NAME	"stmvl53l0"
+#define STMVL53L0_SLAVE_ADDR	(0x52>>1)
+
+#define DRIVER_VERSION		"1.0.5"
+#define I2C_M_WR			0x00
+/* #define INT_POLLING_DELAY	20 */
+
+/* if don't want to have output from vl53l0_dbgmsg, comment out #DEBUG macro */
+#define DEBUG
+#define vl53l0_dbgmsg(str, args...)	\
+	pr_err("%s: " str, __func__, ##args)
+#define vl53l0_errmsg(str, args...) \
+	pr_err("%s: " str, __func__, ##args)
+
+#define VL53L0_VDD_MIN      2600000
+#define VL53L0_VDD_MAX      3000000
+
+typedef enum {
+	NORMAL_MODE = 0,
+	OFFSETCALIB_MODE = 1,
+	XTALKCALIB_MODE = 2,
+} init_mode_e;
+
+typedef enum {
+	OFFSET_PAR = 0,
+	XTALKRATE_PAR = 1,
+	XTALKENABLE_PAR = 2,
+	GPIOFUNC_PAR = 3,
+	LOWTHRESH_PAR = 4,
+	HIGHTHRESH_PAR = 5,
+	DEVICEMODE_PAR = 6,
+	INTERMEASUREMENT_PAR = 7,
+	REFERENCESPADS_PAR = 8,
+	REFCALIBRATION_PAR = 9,
+} parameter_name_e;
+
+enum {
+	CCI_BUS = 0,
+	I2C_BUS = 1,
+};
+
+/*
+ *  IOCTL register data structs
+ */
+struct stmvl53l0_register {
+	uint32_t is_read; /*1: read 0: write*/
+	uint32_t reg_index;
+	uint32_t reg_bytes;
+	uint32_t reg_data;
+	int32_t status;
+};
+
+/*
+ *  IOCTL parameter structs
+ */
+struct stmvl53l0_parameter {
+	uint32_t is_read; /*1: Get 0: Set*/
+	parameter_name_e name;
+	int32_t value;
+	int32_t value2;
+	int32_t status;
+};
+
+/*
+ *  IOCTL Custom Use Case
+ */
+struct stmvl53l0_custom_use_case {
+	FixPoint1616_t	signalRateLimit;
+	FixPoint1616_t	sigmaLimit;
+	uint32_t		preRangePulsePeriod;
+	uint32_t		finalRangePulsePeriod;
+	uint32_t		timingBudget;
+};
+
+
+/*
+ *  driver data structs
+ */
+struct stmvl53l0_data {
+
+	/* !<embed ST VL53L0 Dev data as "dev_data" */
+	VL53L0_DevData_t Data;
+	/*!< i2c device address user specific field*/
+	uint8_t   I2cDevAddr;
+	/*!< Type of comms : VL53L0_COMMS_I2C or VL53L0_COMMS_SPI */
+	uint8_t   comms_type;
+	/*!< Comms speed [kHz] : typically 400kHz for I2C */
+	uint16_t  comms_speed_khz;
+	/* CCI_BUS; I2C_BUS */
+	uint8_t   bus_type;
+
+	void *client_object; /* cci or i2c client */
+
+	struct mutex update_lock;
+	struct delayed_work	dwork;		/* for PS  work handler */
+	struct input_dev *input_dev_ps;
+	struct kobject *range_kobj;
+
+	const char *dev_name;
+	/* function pointer */
+
+	/* misc device */
+	struct miscdevice miscdev;
+
+	int irq;
+	unsigned int reset;
+
+	/* control flag from HAL */
+	unsigned int enable_ps_sensor;
+
+	/* PS parameters */
+	unsigned int ps_data;			/* to store PS data */
+
+	/* Calibration parameters */
+	unsigned int offsetCalDistance;
+	unsigned int xtalkCalDistance;
+
+	/* Calibration values */
+	uint32_t refSpadCount;
+	uint8_t isApertureSpads;
+	uint8_t VhvSettings;
+	uint8_t PhaseCal;
+	int32_t OffsetMicroMeter;
+	FixPoint1616_t XTalkCompensationRateMegaCps;
+	uint32_t  setCalibratedValue;
+
+	/* Custom values set by app */
+	FixPoint1616_t signalRateLimit;
+	FixPoint1616_t sigmaLimit;
+	uint32_t		preRangePulsePeriod;
+	uint32_t		finalRangePulsePeriod;
+
+
+	/* Range Data */
+	VL53L0_RangingMeasurementData_t rangeData;
+
+	/* Device parameters */
+	VL53L0_DeviceModes	deviceMode;
+	uint32_t		interMeasurems;
+	VL53L0_GpioFunctionality gpio_function;
+	VL53L0_InterruptPolarity gpio_polarity;
+	FixPoint1616_t low_threshold;
+	FixPoint1616_t high_threshold;
+
+	/* delay time in miniseconds*/
+	uint8_t delay_ms;
+
+	/* Timing Budget */
+	uint32_t	timingBudget;
+	/* Use this threshold to force restart ranging */
+	uint32_t       noInterruptCount;
+	/* Use this flag to denote use case*/
+	uint8_t		useCase;
+	/* Use this flag to indicate an update of use case */
+	uint8_t			updateUseCase;
+	/* Polling thread */
+	struct task_struct *poll_thread;
+	/* Wait Queue on which the poll thread blocks */
+	wait_queue_head_t poll_thread_wq;
+
+	/* Recent interrupt status */
+	uint32_t		interruptStatus;
+
+	struct mutex work_mutex;
+
+	struct timer_list timer;
+	uint32_t flushCount;
+
+	/* Debug */
+	unsigned int enableDebug;
+	uint8_t interrupt_received;
+};
+
+/*
+ *  function pointer structs
+ */
+struct stmvl53l0_module_fn_t {
+	int (*init)(void);
+	void (*deinit)(void *);
+	int (*power_up)(void *, unsigned int *);
+	int (*power_down)(void *);
+};
+
+
+
+int stmvl53l0_setup(struct stmvl53l0_data *data);
+void stmvl53l0_cleanup(struct stmvl53l0_data *data);
+
+#endif /* STMVL53L0_H */
diff --git a/drivers/input/misc/vl53L0/stmvl53l0_module-cci.c b/drivers/input/misc/vl53L0/stmvl53l0_module-cci.c
new file mode 100644
index 000000000000..e08edbcc73f9
--- /dev/null
+++ b/drivers/input/misc/vl53L0/stmvl53l0_module-cci.c
@@ -0,0 +1,509 @@
+/*
+ *  stmvl53l0_module-cci.c - Linux kernel modules for STM VL53L0 FlightSense TOF
+ *							sensor
+ *
+ *  Copyright (C) 2016 STMicroelectronics Imaging Division.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+#include <linux/uaccess.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <linux/input.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/platform_device.h>
+/*
+ * power specific includes
+ */
+#include <linux/pwm.h>
+#include <linux/regulator/consumer.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/clk.h>
+#include <linux/of_gpio.h>
+/*
+ * API includes
+ */
+#include "vl53l0_api.h"
+#include "vl53l0_def.h"
+#include "vl53l0_platform.h"
+#include "stmvl53l0-cci.h"
+#include "stmvl53l0-i2c.h"
+#include "stmvl53l0.h"
+
+#ifdef CAMERA_CCI
+/*
+ * Global data
+ */
+static struct v4l2_file_operations msm_tof_v4l2_subdev_fops;
+static struct msm_camera_i2c_fn_t msm_sensor_cci_func_tbl = {
+	.i2c_read = msm_camera_cci_i2c_read,
+	.i2c_read_seq = msm_camera_cci_i2c_read_seq,
+	.i2c_write = msm_camera_cci_i2c_write,
+	.i2c_write_seq = msm_camera_cci_i2c_write_seq,
+	.i2c_write_table = msm_camera_cci_i2c_write_table,
+	.i2c_write_seq_table = msm_camera_cci_i2c_write_seq_table,
+	.i2c_write_table_w_microdelay =
+	    msm_camera_cci_i2c_write_table_w_microdelay,
+	.i2c_util = msm_sensor_cci_i2c_util,
+	.i2c_poll = msm_camera_cci_i2c_poll,
+};
+
+static int stmvl53l0_get_dt_data(struct device *dev, struct cci_data *data);
+
+/*
+ * QCOM specific functions
+ */
+static int stmvl53l0_get_dt_data(struct device *dev, struct cci_data *data)
+{
+	int rc = 0;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	if (dev->of_node) {
+		struct device_node *of_node = dev->of_node;
+		struct msm_tof_vreg *vreg_cfg;
+
+		if (!of_node) {
+			vl53l0_errmsg("failed %d\n", __LINE__);
+			return -EINVAL;
+		}
+
+		rc = of_property_read_u32(of_node,
+					  "cell-index", &data->pdev->id);
+		if (rc < 0) {
+			vl53l0_errmsg("failed %d\n", __LINE__);
+			return rc;
+		}
+		vl53l0_dbgmsg("cell-index: %d\n", data->pdev->id);
+		rc = of_property_read_u32(of_node, "qcom,cci-master",
+					  &data->cci_master);
+		if (rc < 0) {
+			vl53l0_errmsg("failed %d\n", __LINE__);
+			/* Set default master 0 */
+			data->cci_master = MASTER_0;
+			rc = 0;
+		}
+		vl53l0_dbgmsg("cci_master: %d\n", data->cci_master);
+		if (of_find_property(of_node, "qcom,cam-vreg-name", NULL)) {
+			vreg_cfg = &data->vreg_cfg;
+			rc = msm_camera_get_dt_vreg_data(of_node,
+							 &vreg_cfg->cam_vreg,
+							 &vreg_cfg->num_vreg);
+			if (rc < 0) {
+				vl53l0_errmsg("failed %d\n", __LINE__);
+				return rc;
+			}
+		}
+		vl53l0_dbgmsg("vreg-name: %s min_volt: %d max_volt: %d",
+			      vreg_cfg->cam_vreg->reg_name,
+			      vreg_cfg->cam_vreg->min_voltage,
+			      vreg_cfg->cam_vreg->max_voltage);
+
+		rc = msm_sensor_driver_get_gpio_data(&(data->gconf), of_node);
+		if ((rc < 0) || (data->gconf == NULL)) {
+			vl53l0_errmsg
+			    ("No Laser Sensor GPIOs to be configured!\n");
+		}
+
+	}
+	vl53l0_dbgmsg("End rc =%d\n", rc);
+
+	return rc;
+}
+
+static int32_t stmvl53l0_vreg_control(struct cci_data *data, int config)
+{
+	int rc = 0, i, cnt;
+	struct msm_tof_vreg *vreg_cfg;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	vreg_cfg = &data->vreg_cfg;
+	cnt = vreg_cfg->num_vreg;
+	vl53l0_dbgmsg("num_vreg: %d\n", cnt);
+	if (!cnt) {
+		vl53l0_errmsg("failed %d\n", __LINE__);
+		return 0;
+	}
+
+	if (cnt >= MSM_TOF_MAX_VREGS) {
+		vl53l0_errmsg("failed %d cnt %d\n", __LINE__, cnt);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < cnt; i++) {
+		rc = msm_camera_config_single_vreg(&(data->pdev->dev),
+						   &vreg_cfg->cam_vreg[i],
+						   (struct regulator **)
+						   &vreg_cfg->data[i], config);
+	}
+
+	vl53l0_dbgmsg("EXIT rc =%d\n", rc);
+	return rc;
+}
+
+static int msm_tof_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+	int rc = 0;
+/*
+ *	struct msm_tof_ctrl_t *tof_ctrl =  v4l2_get_subdevdata(sd);
+ *	if (!tof_ctrl) {
+ *		pr_err("failed\n");
+ *		return -EINVAL;
+ *	}
+ *	if (tof_ctrl->tof_device_type == MSM_CAMERA_PLATFORM_DEVICE) {
+ *		rc = tof_ctrl->i2c_client.i2c_func_tbl->i2c_util(
+ *			&tof_ctrl->i2c_client, MSM_CCI_RELEASE);
+ *		if (rc < 0)
+ *			pr_err("cci_init failed\n");
+ *	}
+ *    tof_ctrl->i2c_state = TOF_I2C_RELEASE;
+ */
+	return rc;
+}
+
+static const struct v4l2_subdev_internal_ops msm_tof_internal_ops = {
+	.close = msm_tof_close,
+};
+
+static long msm_tof_subdev_ioctl(struct v4l2_subdev *sd,
+				 unsigned int cmd, void *arg)
+{
+	vl53l0_dbgmsg("Subdev_ioctl not handled\n");
+	return 0;
+}
+
+static int32_t msm_tof_power(struct v4l2_subdev *sd, int on)
+{
+	vl53l0_dbgmsg("TOF power called\n");
+	return 0;
+}
+
+static struct v4l2_subdev_core_ops msm_tof_subdev_core_ops = {
+	.ioctl = msm_tof_subdev_ioctl,
+	.s_power = msm_tof_power,
+};
+
+static struct v4l2_subdev_ops msm_tof_subdev_ops = {
+	.core = &msm_tof_subdev_core_ops,
+};
+
+static int stmvl53l0_cci_init(struct cci_data *data)
+{
+	int rc = 0;
+	struct msm_camera_cci_client *cci_client = data->client->cci_client;
+
+	if (data->subdev_initialized == FALSE) {
+		data->client->i2c_func_tbl = &msm_sensor_cci_func_tbl;
+		data->client->cci_client =
+		    kzalloc(sizeof(struct msm_camera_cci_client), GFP_KERNEL);
+		if (!data->client->cci_client) {
+			vl53l0_errmsg("%d, failed no memory\n", __LINE__);
+			return -ENOMEM;
+		}
+		cci_client = data->client->cci_client;
+		cci_client->cci_subdev = msm_cci_get_subdev();
+		if (cci_client->cci_subdev == NULL) {
+			vl53l0_errmsg("CCI subdev is not initialized!!\n");
+			return -ENODEV;
+		}
+		cci_client->cci_i2c_master = data->cci_master;
+		v4l2_subdev_init(&data->msm_sd.sd, data->subdev_ops);
+		v4l2_set_subdevdata(&data->msm_sd.sd, data);
+		data->msm_sd.sd.internal_ops = &msm_tof_internal_ops;
+		data->msm_sd.sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+		snprintf(data->msm_sd.sd.name,
+			 ARRAY_SIZE(data->msm_sd.sd.name), "msm_tof");
+		media_entity_init(&data->msm_sd.sd.entity, 0, NULL, 0);
+		data->msm_sd.sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
+		data->msm_sd.sd.entity.group_id = MSM_CAMERA_SUBDEV_TOF;
+		data->msm_sd.close_seq =
+		    MSM_SD_CLOSE_2ND_CATEGORY | 0x2;
+		msm_sd_register(&data->msm_sd);
+		msm_tof_v4l2_subdev_fops = v4l2_subdev_fops;
+		data->msm_sd.sd.devnode->fops =
+		    &msm_tof_v4l2_subdev_fops;
+		data->subdev_initialized = TRUE;
+	}
+
+	cci_client->sid = 0x29;
+	cci_client->retries = 3;
+	cci_client->id_map = 0;
+	cci_client->cci_i2c_master = data->cci_master;
+	rc = data->client->i2c_func_tbl->i2c_util(data->client, MSM_CCI_INIT);
+	if (rc < 0) {
+		vl53l0_errmsg("%d: CCI Init failed\n", __LINE__);
+		return rc;
+	}
+	vl53l0_dbgmsg("CCI Init Succeeded\n");
+
+	data->client->addr_type = MSM_CAMERA_I2C_BYTE_ADDR;
+
+	return 0;
+}
+
+static int32_t stmvl53l0_platform_probe(struct platform_device *pdev)
+{
+	struct stmvl53l0_data *vl53l0_data = NULL;
+	struct cci_data *cci_object = NULL;
+	int32_t rc = 0;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	if (!pdev->dev.of_node) {
+		vl53l0_errmsg("of_node NULL\n");
+		return -EINVAL;
+	}
+
+	vl53l0_data = kzalloc(sizeof(struct stmvl53l0_data), GFP_KERNEL);
+	if (!vl53l0_data) {
+		rc = -ENOMEM;
+		return rc;
+	}
+	if (vl53l0_data) {
+		vl53l0_data->client_object =
+		    kzalloc(sizeof(struct cci_data), GFP_KERNEL);
+		cci_object = (struct cci_data *)vl53l0_data->client_object;
+	}
+	cci_object->client =
+	    (struct msm_camera_i2c_client *)&cci_object->g_client;
+
+	/* setup bus type */
+	vl53l0_data->bus_type = CCI_BUS;
+
+	/* Set platform device handle */
+	cci_object->subdev_ops = &msm_tof_subdev_ops;
+	cci_object->pdev = pdev;
+	rc = stmvl53l0_get_dt_data(&pdev->dev, cci_object);
+	if (rc < 0) {
+		vl53l0_errmsg("%d, failed rc %d\n", __LINE__, rc);
+		return rc;
+	}
+	cci_object->subdev_id = pdev->id;
+
+	/* Set device type as platform device */
+	cci_object->device_type = MSM_CAMERA_PLATFORM_DEVICE;
+	cci_object->subdev_initialized = FALSE;
+
+	/* setup device name */
+	vl53l0_data->dev_name = dev_name(&pdev->dev);
+
+	/* setup device data */
+	dev_set_drvdata(&pdev->dev, vl53l0_data);
+
+	/* setup other stuff */
+	rc = stmvl53l0_setup(vl53l0_data);
+
+	/* init default value */
+	cci_object->power_up = 0;
+
+	vl53l0_dbgmsg("End\n");
+
+	return rc;
+
+}
+
+static int32_t stmvl53l0_platform_remove(struct platform_device *pdev)
+{
+	struct stmvl53l0_data *vl53l0_data = platform_get_drvdata(pdev);
+
+	stmvl53l0_cleanup(vl53l0_data);
+	platform_set_drvdata(pdev, NULL);
+
+	kfree(vl53l0_data->client_object);
+	kfree(vl53l0_data);
+
+	return 0;
+}
+
+static const struct of_device_id st_stmvl53l0_dt_match[] = {
+	{.compatible = "st,stmvl53l0",},
+	{},
+};
+
+static struct platform_driver stmvl53l0_platform_driver = {
+	.probe = stmvl53l0_platform_probe,
+	.remove = stmvl53l0_platform_remove,
+	.driver = {
+		   .name = STMVL53L0_DRV_NAME,
+		   .owner = THIS_MODULE,
+		   .of_match_table = st_stmvl53l0_dt_match,
+		   },
+};
+
+int stmvl53l0_power_up_cci(void *cci_object, unsigned int *preset_flag)
+{
+	int ret = 0;
+	struct cci_data *data = (struct cci_data *)cci_object;
+	struct gpio *gpio_tbl = NULL;
+	uint8_t gpio_tbl_size = 0;
+	int i = 0;
+
+	vl53l0_dbgmsg("Enter");
+
+	/* need to init cci first */
+	ret = stmvl53l0_cci_init(data);
+	if (ret) {
+		vl53l0_errmsg("stmvl53l0_cci_init failed %d\n", __LINE__);
+		return ret;
+	}
+
+	/* Check if GPIO needs to be enabled for chip select */
+	vl53l0_dbgmsg("Get gpio table!size: %d\n",
+		      data->gconf->cam_gpio_req_tbl_size);
+	gpio_tbl = data->gconf->cam_gpio_req_tbl;
+	gpio_tbl_size = data->gconf->cam_gpio_req_tbl_size;
+	if (gpio_tbl_size > 0) {
+		ret = msm_camera_pinctrl_init(&(data->pinctrl_info),
+					      &(data->pdev->dev));
+		if (ret < 0) {
+			vl53l0_errmsg("Initialization of pinctrl failed\n");
+			data->cam_pinctrl_status = 0;
+		} else {
+			data->cam_pinctrl_status = 1;
+		}
+
+		for (i = 0; i < gpio_tbl_size; i++) {
+			ret = gpio_request_one(gpio_tbl[i].gpio,
+					       gpio_tbl[i].flags,
+					       gpio_tbl[i].label);
+			if (ret < 0) {
+				vl53l0_errmsg
+				    ("Request for GPIO %d failed! Err: %d\n",
+				     gpio_tbl[i].gpio, ret);
+			} else {
+				if (data->cam_pinctrl_status) {
+					ret =
+					  pinctrl_select_state(
+					     data->pinctrl_info.pinctrl,
+					 data->pinctrl_info.gpio_state_active);
+					if (ret < 0) {
+						vl53l0_errmsg(
+							"%s: Cannot set pin to active state!\n",
+						     __func__);
+					}
+				}
+				vl53l0_dbgmsg("Set pin %d value to 1!\n",
+					      gpio_tbl[i].gpio);
+				gpio_set_value_cansleep(gpio_tbl[i].gpio, 1);
+			}
+		}
+	}
+
+	/* actual power up */
+	if (data && data->device_type == MSM_CAMERA_PLATFORM_DEVICE) {
+		ret = stmvl53l0_vreg_control(data, 1);
+		if (ret < 0) {
+			vl53l0_errmsg("stmvl53l0_vreg_control failed %d\n",
+				      __LINE__);
+			return ret;
+		}
+	}
+	data->power_up = 1;
+	*preset_flag = 1;
+	vl53l0_dbgmsg("End\n");
+
+	return ret;
+}
+
+int stmvl53l0_power_down_cci(void *cci_object)
+{
+	int ret = 0;
+	struct cci_data *data = (struct cci_data *)cci_object;
+	int i = 0;
+	struct gpio *gpio_tbl = NULL;
+	uint8_t gpio_tbl_size = 0;
+
+	vl53l0_dbgmsg("Enter\n");
+	if (data->power_up) {
+		/* need to release cci first */
+		ret = data->client->i2c_func_tbl->i2c_util(data->client,
+							   MSM_CCI_RELEASE);
+		if (ret < 0)
+			vl53l0_errmsg("CCI Release failed rc %d\n", ret);
+
+		/* actual power down */
+		if (data->device_type == MSM_CAMERA_PLATFORM_DEVICE) {
+			ret = stmvl53l0_vreg_control(data, 0);
+			if (ret < 0) {
+				vl53l0_errmsg
+				    ("stmvl53l0_vreg_control failed %d\n",
+				     __LINE__);
+				return ret;
+			}
+		}
+
+		/* reset GPIO pins */
+		gpio_tbl = data->gconf->cam_gpio_req_tbl;
+		gpio_tbl_size = data->gconf->cam_gpio_req_tbl_size;
+		if (gpio_tbl_size > 0) {
+			for (i = 0; i < gpio_tbl_size; i++)
+				gpio_set_value_cansleep(gpio_tbl[i].gpio, 0);
+			if (data->cam_pinctrl_status) {
+				ret =
+				    pinctrl_select_state(data->pinctrl_info.
+							 pinctrl,
+							 data->pinctrl_info.
+							 gpio_state_suspend);
+				if (ret < 0) {
+					vl53l0_errmsg(
+							"Error setting gpio pin to supsend state!\n");
+				}
+
+				devm_pinctrl_put(data->pinctrl_info.pinctrl);
+				data->cam_pinctrl_status = 0;
+				gpio_free_array(gpio_tbl, gpio_tbl_size);
+			}
+		}
+	}
+	data->power_up = 0;
+	vl53l0_dbgmsg("End\n");
+	return ret;
+}
+
+int stmvl53l0_init_cci(void)
+{
+	int ret = 0;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	/* register as a platform device */
+	ret = platform_driver_register(&stmvl53l0_platform_driver);
+	if (ret)
+		vl53l0_errmsg("%d, error ret:%d\n", __LINE__, ret);
+
+	vl53l0_dbgmsg("End\n");
+
+	return ret;
+}
+
+void stmvl53l0_exit_cci(void *cci_object)
+{
+	struct cci_data *data = (struct cci_data *)cci_object;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	if (data && data->client->cci_client)
+		kfree(data->client->cci_client);
+
+	vl53l0_dbgmsg("End\n");
+}
+#endif				/* end of CAMERA_CCI */
diff --git a/drivers/input/misc/vl53L0/stmvl53l0_module-i2c.c b/drivers/input/misc/vl53L0/stmvl53l0_module-i2c.c
new file mode 100644
index 000000000000..0bff754de15b
--- /dev/null
+++ b/drivers/input/misc/vl53L0/stmvl53l0_module-i2c.c
@@ -0,0 +1,266 @@
+/*
+ *  stmvl53l0_module-i2c.c - Linux kernel modules for STM VL53L0 FlightSense TOF
+ *							sensor
+ *
+ *  Copyright (C) 2016 STMicroelectronics Imaging Division.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+#include <linux/uaccess.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <linux/input.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/platform_device.h>
+/*
+ * power specific includes
+ */
+#include <linux/pwm.h>
+#include <linux/regulator/consumer.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/clk.h>
+#include <linux/of_gpio.h>
+/*
+ * API includes
+ */
+#include "vl53l0_api.h"
+#include "vl53l0_def.h"
+#include "vl53l0_platform.h"
+#include "stmvl53l0-i2c.h"
+#include "stmvl53l0-cci.h"
+#include "stmvl53l0.h"
+#ifndef CAMERA_CCI
+
+/*
+ * Global data
+ */
+static int stmvl53l0_parse_vdd(struct device *dev, struct i2c_data *data);
+
+/*
+ * QCOM specific functions
+ */
+static int stmvl53l0_parse_vdd(struct device *dev, struct i2c_data *data)
+{
+	int ret = 0;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	if (dev->of_node) {
+		data->vana = regulator_get(dev, "vdd");
+		if (IS_ERR(data->vana)) {
+			vl53l0_errmsg("vdd supply is not provided\n");
+			ret = -1;
+		}
+	}
+	vl53l0_dbgmsg("End\n");
+
+	return ret;
+}
+
+static int stmvl53l0_probe(struct i2c_client *client,
+			   const struct i2c_device_id *id)
+{
+	int rc = 0;
+	struct stmvl53l0_data *vl53l0_data = NULL;
+	struct i2c_data *i2c_object = NULL;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE)) {
+		rc = -EIO;
+		return rc;
+	}
+
+	vl53l0_data = kzalloc(sizeof(struct stmvl53l0_data), GFP_KERNEL);
+	if (!vl53l0_data) {
+		rc = -ENOMEM;
+		return rc;
+	}
+	if (vl53l0_data) {
+		vl53l0_data->client_object =
+		    kzalloc(sizeof(struct i2c_data), GFP_KERNEL);
+		i2c_object = (struct i2c_data *)vl53l0_data->client_object;
+	}
+	i2c_object->client = client;
+
+	/* setup bus type */
+	vl53l0_data->bus_type = I2C_BUS;
+
+	/* setup regulator */
+	stmvl53l0_parse_vdd(&i2c_object->client->dev, i2c_object);
+
+	/* setup device name */
+	vl53l0_data->dev_name = dev_name(&client->dev);
+
+	/* setup device data */
+	dev_set_drvdata(&client->dev, vl53l0_data);
+
+	/* setup client data */
+	i2c_set_clientdata(client, vl53l0_data);
+
+	/* setup other stuff */
+	rc = stmvl53l0_setup(vl53l0_data);
+
+	/* init default value */
+	i2c_object->power_up = 0;
+
+	vl53l0_dbgmsg("End\n");
+	return rc;
+}
+
+static int stmvl53l0_remove(struct i2c_client *client)
+{
+	struct stmvl53l0_data *data = i2c_get_clientdata(client);
+
+	vl53l0_dbgmsg("Enter\n");
+
+	/* Power down the device */
+	stmvl53l0_power_down_i2c(data->client_object);
+	stmvl53l0_cleanup(data);
+	kfree(data->client_object);
+	kfree(data);
+	vl53l0_dbgmsg("End\n");
+	return 0;
+}
+
+static const struct i2c_device_id stmvl53l0_id[] = {
+	{STMVL53L0_DRV_NAME, 0},
+	{},
+};
+
+MODULE_DEVICE_TABLE(i2c, stmvl53l0_id);
+
+static const struct of_device_id st_stmvl53l0_dt_match[] = {
+	{.compatible = "st,stmvl53l0",},
+	{},
+};
+
+static struct i2c_driver stmvl53l0_driver = {
+	.driver = {
+		   .name = STMVL53L0_DRV_NAME,
+		   .owner = THIS_MODULE,
+		   .of_match_table = st_stmvl53l0_dt_match,
+		   },
+	.probe = stmvl53l0_probe,
+	.remove = stmvl53l0_remove,
+	.id_table = stmvl53l0_id,
+
+};
+
+int stmvl53l0_power_up_i2c(void *i2c_object, unsigned int *preset_flag)
+{
+	int ret = 0;
+#ifndef STM_TEST
+	struct i2c_data *data = (struct i2c_data *)i2c_object;
+#endif
+
+	vl53l0_dbgmsg("Enter\n");
+
+	/* actual power on */
+#ifndef STM_TEST
+	ret = regulator_set_voltage(data->vana, VL53L0_VDD_MIN, VL53L0_VDD_MAX);
+	if (ret < 0) {
+		vl53l0_errmsg("set_vol(%p) fail %d\n", data->vana, ret);
+		return ret;
+	}
+	ret = regulator_enable(data->vana);
+
+	usleep_range(2950, 3000);
+	if (ret < 0) {
+		vl53l0_errmsg("reg enable(%p) failed.rc=%d\n", data->vana, ret);
+		return ret;
+	}
+	data->power_up = 1;
+	*preset_flag = 1;
+#endif
+
+	vl53l0_dbgmsg("End\n");
+	return ret;
+}
+
+int stmvl53l0_power_down_i2c(void *i2c_object)
+{
+	int ret = 0;
+#ifndef STM_TEST
+	struct i2c_data *data = (struct i2c_data *)i2c_object;
+#endif
+
+	vl53l0_dbgmsg("Enter\n");
+#ifndef STM_TEST
+	usleep_range(2950, 3000);
+	ret = regulator_disable(data->vana);
+	if (ret < 0)
+		vl53l0_errmsg("reg disable(%p) failed.rc=%d\n",
+			      data->vana, ret);
+
+	data->power_up = 0;
+#endif
+
+	vl53l0_dbgmsg("End\n");
+	return ret;
+}
+
+int stmvl53l0_init_i2c(void)
+{
+	int ret = 0;
+
+#ifdef STM_TEST
+	struct i2c_client *client = NULL;
+	struct i2c_adapter *adapter;
+	struct i2c_board_info info = {
+		.type = "stmvl53l0",
+		.addr = STMVL53L0_SLAVE_ADDR,
+	};
+#endif
+
+	vl53l0_dbgmsg("Enter\n");
+
+	/* register as a i2c client device */
+	ret = i2c_add_driver(&stmvl53l0_driver);
+	if (ret)
+		vl53l0_errmsg("%d erro ret:%d\n", __LINE__, ret);
+
+#ifdef STM_TEST
+	if (!ret) {
+		adapter = i2c_get_adapter(4);
+		if (!adapter)
+			ret = -EINVAL;
+		else
+			client = i2c_new_device(adapter, &info);
+		if (!client)
+			ret = -EINVAL;
+	}
+#endif
+
+	vl53l0_dbgmsg("End with rc:%d\n", ret);
+
+	return ret;
+}
+
+void stmvl53l0_exit_i2c(void *i2c_object)
+{
+	vl53l0_dbgmsg("Enter\n");
+	i2c_del_driver(&stmvl53l0_driver);
+
+	vl53l0_dbgmsg("End\n");
+}
+
+#endif				/* end of NOT CAMERA_CCI */
diff --git a/drivers/input/misc/vl53L0/stmvl53l0_module.c b/drivers/input/misc/vl53L0/stmvl53l0_module.c
new file mode 100644
index 000000000000..f242e5f497d0
--- /dev/null
+++ b/drivers/input/misc/vl53L0/stmvl53l0_module.c
@@ -0,0 +1,2878 @@
+/*
+ *  stmvl53l0_module.c - Linux kernel modules for STM VL53L0 FlightSense TOF
+ *						 sensor
+ *
+ *  Copyright (C) 2016 STMicroelectronics Imaging Division.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+#include <linux/uaccess.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <linux/input.h>
+#include <linux/miscdevice.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/platform_device.h>
+#include <linux/kobject.h>
+#include <linux/kthread.h>
+/*
+ * API includes
+ */
+#include "vl53l0_api.h"
+#include "vl53l010_api.h"
+
+/*#define USE_INT */
+#define IRQ_NUM	   59
+/* #define DEBUG_TIME_LOG */
+#ifdef DEBUG_TIME_LOG
+struct timeval start_tv, stop_tv;
+#endif
+
+/*
+ * Global data
+ */
+
+#ifdef CAMERA_CCI
+static struct stmvl53l0_module_fn_t stmvl53l0_module_func_tbl = {
+	.init = stmvl53l0_init_cci,
+	.deinit = stmvl53l0_exit_cci,
+	.power_up = stmvl53l0_power_up_cci,
+	.power_down = stmvl53l0_power_down_cci,
+};
+#else
+static struct stmvl53l0_module_fn_t stmvl53l0_module_func_tbl = {
+	.init = stmvl53l0_init_i2c,
+	.deinit = stmvl53l0_exit_i2c,
+	.power_up = stmvl53l0_power_up_i2c,
+	.power_down = stmvl53l0_power_down_i2c,
+};
+#endif
+struct stmvl53l0_module_fn_t *pmodule_func_tbl;
+
+struct stmvl53l0_api_fn_t {
+	int8_t (*GetVersion)(VL53L0_Version_t *pVersion);
+	int8_t (*GetPalSpecVersion)(VL53L0_Version_t *pPalSpecVersion);
+
+	int8_t (*GetProductRevision)(VL53L0_DEV Dev,
+					uint8_t *pProductRevisionMajor,
+					uint8_t *pProductRevisionMinor);
+	int8_t (*GetDeviceInfo)(VL53L0_DEV Dev,
+				VL53L0_DeviceInfo_t *pVL53L0_DeviceInfo);
+	int8_t (*GetDeviceErrorStatus)(VL53L0_DEV Dev,
+				VL53L0_DeviceError *pDeviceErrorStatus);
+	int8_t (*GetRangeStatusString)(uint8_t RangeStatus,
+				char *pRangeStatusString);
+	int8_t (*GetDeviceErrorString)(VL53L0_DeviceError ErrorCode,
+				char *pDeviceErrorString);
+	int8_t (*GetPalErrorString)(VL53L0_Error PalErrorCode,
+				char *pPalErrorString);
+	int8_t (*GetPalStateString)(VL53L0_State PalStateCode,
+				char *pPalStateString);
+	int8_t (*GetPalState)(VL53L0_DEV Dev,	VL53L0_State *pPalState);
+	int8_t (*SetPowerMode)(VL53L0_DEV Dev,
+				VL53L0_PowerModes PowerMode);
+	int8_t (*GetPowerMode)(VL53L0_DEV Dev,
+				VL53L0_PowerModes *pPowerMode);
+	int8_t (*SetOffsetCalibrationDataMicroMeter)(VL53L0_DEV Dev,
+				int32_t OffsetCalibrationDataMicroMeter);
+	int8_t (*GetOffsetCalibrationDataMicroMeter)(VL53L0_DEV Dev,
+				int32_t *pOffsetCalibrationDataMicroMeter);
+	int8_t (*SetLinearityCorrectiveGain)(VL53L0_DEV Dev,
+				int16_t LinearityCorrectiveGain);
+	int8_t (*GetLinearityCorrectiveGain)(VL53L0_DEV Dev,
+				uint16_t *pLinearityCorrectiveGain);
+	int8_t (*SetGroupParamHold)(VL53L0_DEV Dev,
+				uint8_t GroupParamHold);
+	int8_t (*GetUpperLimitMilliMeter)(VL53L0_DEV Dev,
+				uint16_t *pUpperLimitMilliMeter);
+	int8_t (*SetDeviceAddress)(VL53L0_DEV Dev,
+				uint8_t DeviceAddress);
+	int8_t (*DataInit)(VL53L0_DEV Dev);
+	int8_t (*SetTuningSettingBuffer)(VL53L0_DEV Dev,
+				uint8_t *pTuningSettingBuffer,
+				uint8_t UseInternalTuningSettings);
+	int8_t (*GetTuningSettingBuffer)(VL53L0_DEV Dev,
+				uint8_t **pTuningSettingBuffer,
+				uint8_t *pUseInternalTuningSettings);
+	int8_t (*StaticInit)(VL53L0_DEV Dev);
+	int8_t (*WaitDeviceBooted)(VL53L0_DEV Dev);
+	int8_t (*ResetDevice)(VL53L0_DEV Dev);
+	int8_t (*SetDeviceParameters)(VL53L0_DEV Dev,
+			const VL53L0_DeviceParameters_t *pDeviceParameters);
+	int8_t (*GetDeviceParameters)(VL53L0_DEV Dev,
+				VL53L0_DeviceParameters_t *pDeviceParameters);
+	int8_t (*SetDeviceMode)(VL53L0_DEV Dev,
+				VL53L0_DeviceModes DeviceMode);
+	int8_t (*GetDeviceMode)(VL53L0_DEV Dev,
+				VL53L0_DeviceModes *pDeviceMode);
+	int8_t (*SetHistogramMode)(VL53L0_DEV Dev,
+				VL53L0_HistogramModes HistogramMode);
+	int8_t (*GetHistogramMode)(VL53L0_DEV Dev,
+				VL53L0_HistogramModes *pHistogramMode);
+	int8_t (*SetMeasurementTimingBudgetMicroSeconds)(VL53L0_DEV Dev,
+				uint32_t  MeasurementTimingBudgetMicroSeconds);
+	int8_t (*GetMeasurementTimingBudgetMicroSeconds)(
+				VL53L0_DEV Dev,
+				uint32_t *pMeasurementTimingBudgetMicroSeconds);
+	int8_t (*GetVcselPulsePeriod)(VL53L0_DEV Dev,
+				VL53L0_VcselPeriod VcselPeriodType,
+				uint8_t	*pVCSELPulsePeriod);
+	int8_t (*SetVcselPulsePeriod)(VL53L0_DEV Dev,
+				VL53L0_VcselPeriod VcselPeriodType,
+				uint8_t VCSELPulsePeriod);
+	int8_t (*SetSequenceStepEnable)(VL53L0_DEV Dev,
+				VL53L0_SequenceStepId SequenceStepId,
+				uint8_t SequenceStepEnabled);
+	int8_t (*GetSequenceStepEnable)(VL53L0_DEV Dev,
+				VL53L0_SequenceStepId SequenceStepId,
+				uint8_t *pSequenceStepEnabled);
+	int8_t (*GetSequenceStepEnables)(VL53L0_DEV Dev,
+		VL53L0_SchedulerSequenceSteps_t *pSchedulerSequenceSteps);
+	int8_t (*SetSequenceStepTimeout)(VL53L0_DEV Dev,
+				VL53L0_SequenceStepId SequenceStepId,
+				FixPoint1616_t TimeOutMilliSecs);
+	int8_t (*GetSequenceStepTimeout)(VL53L0_DEV Dev,
+				VL53L0_SequenceStepId SequenceStepId,
+				FixPoint1616_t *pTimeOutMilliSecs);
+	int8_t (*GetNumberOfSequenceSteps)(VL53L0_DEV Dev,
+				uint8_t *pNumberOfSequenceSteps);
+	int8_t (*GetSequenceStepsInfo)(
+				VL53L0_SequenceStepId SequenceStepId,
+				char *pSequenceStepsString);
+	int8_t (*SetInterMeasurementPeriodMilliSeconds)(
+				VL53L0_DEV Dev,
+				uint32_t InterMeasurementPeriodMilliSeconds);
+	int8_t (*GetInterMeasurementPeriodMilliSeconds)(
+				VL53L0_DEV Dev,
+				uint32_t *pInterMeasurementPeriodMilliSeconds);
+	int8_t (*SetXTalkCompensationEnable)(VL53L0_DEV Dev,
+				uint8_t XTalkCompensationEnable);
+	int8_t (*GetXTalkCompensationEnable)(VL53L0_DEV Dev,
+				uint8_t *pXTalkCompensationEnable);
+	int8_t (*SetXTalkCompensationRateMegaCps)(
+				VL53L0_DEV Dev,
+				FixPoint1616_t XTalkCompensationRateMegaCps);
+	int8_t (*GetXTalkCompensationRateMegaCps)(
+				VL53L0_DEV Dev,
+				FixPoint1616_t *pXTalkCompensationRateMegaCps);
+	int8_t (*GetNumberOfLimitCheck)(
+				uint16_t *pNumberOfLimitCheck);
+	int8_t (*GetLimitCheckInfo)(VL53L0_DEV Dev,
+				uint16_t LimitCheckId, char *pLimitCheckString);
+	int8_t (*SetLimitCheckEnable)(VL53L0_DEV Dev,
+				uint16_t LimitCheckId,
+				uint8_t LimitCheckEnable);
+	int8_t (*GetLimitCheckEnable)(VL53L0_DEV Dev,
+		uint16_t LimitCheckId, uint8_t *pLimitCheckEnable);
+	int8_t (*SetLimitCheckValue)(VL53L0_DEV Dev,
+				uint16_t LimitCheckId,
+				FixPoint1616_t LimitCheckValue);
+	int8_t (*GetLimitCheckValue)(VL53L0_DEV Dev,
+				uint16_t LimitCheckId,
+				FixPoint1616_t *pLimitCheckValue);
+	int8_t (*GetLimitCheckCurrent)(VL53L0_DEV Dev,
+		uint16_t LimitCheckId, FixPoint1616_t *pLimitCheckCurrent);
+	int8_t (*SetWrapAroundCheckEnable)(VL53L0_DEV Dev,
+				uint8_t WrapAroundCheckEnable);
+	int8_t (*GetWrapAroundCheckEnable)(VL53L0_DEV Dev,
+				uint8_t *pWrapAroundCheckEnable);
+	int8_t (*PerformSingleMeasurement)(VL53L0_DEV Dev);
+	int8_t (*PerformRefCalibration)(VL53L0_DEV Dev,
+				uint8_t *pVhvSettings, uint8_t *pPhaseCal);
+	int8_t (*SetRefCalibration)(VL53L0_DEV Dev,
+			uint8_t VhvSettings,
+			uint8_t PhaseCal);
+	int8_t (*GetRefCalibration)(VL53L0_DEV Dev,
+			uint8_t *pVhvSettings,
+			uint8_t *pPhaseCal);
+	int8_t (*PerformXTalkCalibration)(VL53L0_DEV Dev,
+				FixPoint1616_t XTalkCalDistance,
+				FixPoint1616_t *pXTalkCompensationRateMegaCps);
+	int8_t (*PerformOffsetCalibration)(VL53L0_DEV Dev,
+				FixPoint1616_t CalDistanceMilliMeter,
+				int32_t *pOffsetMicroMeter);
+	int8_t (*StartMeasurement)(VL53L0_DEV Dev);
+	int8_t (*StopMeasurement)(VL53L0_DEV Dev);
+	int8_t (*GetMeasurementDataReady)(VL53L0_DEV Dev,
+				uint8_t *pMeasurementDataReady);
+	int8_t (*WaitDeviceReadyForNewMeasurement)(VL53L0_DEV Dev,
+				uint32_t MaxLoop);
+	int8_t (*GetRangingMeasurementData)(VL53L0_DEV Dev,
+		VL53L0_RangingMeasurementData_t *pRangingMeasurementData);
+	int8_t (*GetHistogramMeasurementData)(VL53L0_DEV Dev,
+		VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData);
+	int8_t (*PerformSingleRangingMeasurement)(VL53L0_DEV Dev,
+		VL53L0_RangingMeasurementData_t *pRangingMeasurementData);
+	int8_t (*PerformSingleHistogramMeasurement)(VL53L0_DEV Dev,
+		VL53L0_HistogramMeasurementData_t *pHistogramMeasurementData);
+	int8_t (*SetNumberOfROIZones)(VL53L0_DEV Dev,
+				uint8_t NumberOfROIZones);
+	int8_t (*GetNumberOfROIZones)(VL53L0_DEV Dev,
+				uint8_t *pNumberOfROIZones);
+	int8_t (*GetMaxNumberOfROIZones)(VL53L0_DEV Dev,
+				uint8_t *pMaxNumberOfROIZones);
+	int8_t (*SetGpioConfig)(VL53L0_DEV Dev,
+				uint8_t Pin,
+				VL53L0_DeviceModes DeviceMode,
+				VL53L0_GpioFunctionality Functionality,
+				VL53L0_InterruptPolarity Polarity);
+	int8_t (*GetGpioConfig)(VL53L0_DEV Dev,
+				uint8_t Pin,
+				VL53L0_DeviceModes *pDeviceMode,
+				VL53L0_GpioFunctionality *pFunctionality,
+				VL53L0_InterruptPolarity *pPolarity);
+	int8_t (*SetInterruptThresholds)(VL53L0_DEV Dev,
+				VL53L0_DeviceModes DeviceMode,
+				FixPoint1616_t ThresholdLow,
+				FixPoint1616_t ThresholdHigh);
+	int8_t (*GetInterruptThresholds)(VL53L0_DEV Dev,
+				VL53L0_DeviceModes DeviceMode,
+				FixPoint1616_t *pThresholdLow,
+				FixPoint1616_t *pThresholdHigh);
+	int8_t (*ClearInterruptMask)(VL53L0_DEV Dev,
+				uint32_t InterruptMask);
+	int8_t (*GetInterruptMaskStatus)(VL53L0_DEV Dev,
+				uint32_t *pInterruptMaskStatus);
+	int8_t (*EnableInterruptMask)(VL53L0_DEV Dev, uint32_t InterruptMask);
+	int8_t (*SetSpadAmbientDamperThreshold)(VL53L0_DEV Dev,
+				uint16_t SpadAmbientDamperThreshold);
+	int8_t (*GetSpadAmbientDamperThreshold)(VL53L0_DEV Dev,
+				uint16_t *pSpadAmbientDamperThreshold);
+	int8_t (*SetSpadAmbientDamperFactor)(VL53L0_DEV Dev,
+				uint16_t SpadAmbientDamperFactor);
+	int8_t (*GetSpadAmbientDamperFactor)(VL53L0_DEV Dev,
+				uint16_t *pSpadAmbientDamperFactor);
+	int8_t (*PerformRefSpadManagement)(VL53L0_DEV Dev,
+		uint32_t *refSpadCount, uint8_t *isApertureSpads);
+	int8_t (*SetReferenceSpads)(VL53L0_DEV Dev,
+			 uint32_t count, uint8_t isApertureSpads);
+	int8_t (*GetReferenceSpads)(VL53L0_DEV Dev,
+			uint32_t *pSpadCount, uint8_t *pIsApertureSpads);
+};
+
+static struct stmvl53l0_api_fn_t stmvl53l0_api_func_tbl = {
+	.GetVersion = VL53L0_GetVersion,
+	.GetPalSpecVersion = VL53L0_GetPalSpecVersion,
+	.GetProductRevision = VL53L0_GetProductRevision,
+	.GetDeviceInfo = VL53L0_GetDeviceInfo,
+	.GetDeviceErrorStatus = VL53L0_GetDeviceErrorStatus,
+	.GetRangeStatusString = VL53L0_GetRangeStatusString,
+	.GetDeviceErrorString = VL53L0_GetDeviceErrorString,
+	.GetPalErrorString = VL53L0_GetPalErrorString,
+	.GetPalState = VL53L0_GetPalState,
+	.SetPowerMode = VL53L0_SetPowerMode,
+	.GetPowerMode = VL53L0_GetPowerMode,
+	.SetOffsetCalibrationDataMicroMeter =
+		VL53L0_SetOffsetCalibrationDataMicroMeter,
+	.SetLinearityCorrectiveGain =
+		VL53L0_SetLinearityCorrectiveGain,
+	.GetLinearityCorrectiveGain =
+		VL53L0_GetLinearityCorrectiveGain,
+	.GetOffsetCalibrationDataMicroMeter =
+		VL53L0_GetOffsetCalibrationDataMicroMeter,
+	.SetGroupParamHold = VL53L0_SetGroupParamHold,
+	.GetUpperLimitMilliMeter = VL53L0_GetUpperLimitMilliMeter,
+	.SetDeviceAddress = VL53L0_SetDeviceAddress,
+	.DataInit = VL53L0_DataInit,
+	.SetTuningSettingBuffer = VL53L0_SetTuningSettingBuffer,
+	.GetTuningSettingBuffer = VL53L0_GetTuningSettingBuffer,
+	.StaticInit = VL53L0_StaticInit,
+	.WaitDeviceBooted = VL53L0_WaitDeviceBooted,
+	.ResetDevice = VL53L0_ResetDevice,
+	.SetDeviceParameters = VL53L0_SetDeviceParameters,
+	.SetDeviceMode = VL53L0_SetDeviceMode,
+	.GetDeviceMode = VL53L0_GetDeviceMode,
+	.SetHistogramMode = VL53L0_SetHistogramMode,
+	.GetHistogramMode = VL53L0_GetHistogramMode,
+	.SetMeasurementTimingBudgetMicroSeconds =
+		VL53L0_SetMeasurementTimingBudgetMicroSeconds,
+	.GetMeasurementTimingBudgetMicroSeconds =
+		VL53L0_GetMeasurementTimingBudgetMicroSeconds,
+	.GetVcselPulsePeriod = VL53L0_GetVcselPulsePeriod,
+	.SetVcselPulsePeriod = VL53L0_SetVcselPulsePeriod,
+	.SetSequenceStepEnable = VL53L0_SetSequenceStepEnable,
+	.GetSequenceStepEnable = VL53L0_GetSequenceStepEnable,
+	.GetSequenceStepEnables = VL53L0_GetSequenceStepEnables,
+	.SetSequenceStepTimeout = VL53L0_SetSequenceStepTimeout,
+	.GetSequenceStepTimeout = VL53L0_GetSequenceStepTimeout,
+	.GetNumberOfSequenceSteps = VL53L0_GetNumberOfSequenceSteps,
+	.GetSequenceStepsInfo = VL53L0_GetSequenceStepsInfo,
+	.SetInterMeasurementPeriodMilliSeconds =
+		VL53L0_SetInterMeasurementPeriodMilliSeconds,
+	.GetInterMeasurementPeriodMilliSeconds =
+		VL53L0_GetInterMeasurementPeriodMilliSeconds,
+	.SetXTalkCompensationEnable = VL53L0_SetXTalkCompensationEnable,
+	.GetXTalkCompensationEnable = VL53L0_GetXTalkCompensationEnable,
+	.SetXTalkCompensationRateMegaCps =
+		VL53L0_SetXTalkCompensationRateMegaCps,
+	.GetXTalkCompensationRateMegaCps =
+		VL53L0_GetXTalkCompensationRateMegaCps,
+	.GetNumberOfLimitCheck = VL53L0_GetNumberOfLimitCheck,
+	.GetLimitCheckInfo = VL53L0_GetLimitCheckInfo,
+	.SetLimitCheckEnable = VL53L0_SetLimitCheckEnable,
+	.GetLimitCheckEnable = VL53L0_GetLimitCheckEnable,
+	.SetLimitCheckValue = VL53L0_SetLimitCheckValue,
+	.GetLimitCheckValue = VL53L0_GetLimitCheckValue,
+	.GetLimitCheckCurrent = VL53L0_GetLimitCheckCurrent,
+	.SetWrapAroundCheckEnable = VL53L0_SetWrapAroundCheckEnable,
+	.GetWrapAroundCheckEnable = VL53L0_GetWrapAroundCheckEnable,
+	.PerformSingleMeasurement = VL53L0_PerformSingleMeasurement,
+	.PerformRefCalibration = VL53L0_PerformRefCalibration,
+	.SetRefCalibration = VL53L0_SetRefCalibration,
+	.GetRefCalibration = VL53L0_GetRefCalibration,
+	.PerformXTalkCalibration = VL53L0_PerformXTalkCalibration,
+	.PerformOffsetCalibration = VL53L0_PerformOffsetCalibration,
+	.StartMeasurement = VL53L0_StartMeasurement,
+	.StopMeasurement = VL53L0_StopMeasurement,
+	.GetMeasurementDataReady = VL53L0_GetMeasurementDataReady,
+	.WaitDeviceReadyForNewMeasurement =
+		VL53L0_WaitDeviceReadyForNewMeasurement,
+	.GetRangingMeasurementData = VL53L0_GetRangingMeasurementData,
+	.GetHistogramMeasurementData = VL53L0_GetHistogramMeasurementData,
+	.PerformSingleRangingMeasurement =
+		VL53L0_PerformSingleRangingMeasurement,
+	.PerformSingleHistogramMeasurement =
+		VL53L0_PerformSingleHistogramMeasurement,
+	.SetNumberOfROIZones = VL53L0_SetNumberOfROIZones,
+	.GetNumberOfROIZones = VL53L0_GetNumberOfROIZones,
+	.GetMaxNumberOfROIZones = VL53L0_GetMaxNumberOfROIZones,
+	.SetGpioConfig = VL53L0_SetGpioConfig,
+	.GetGpioConfig = VL53L0_GetGpioConfig,
+	.SetInterruptThresholds = VL53L0_SetInterruptThresholds,
+	.GetInterruptThresholds = VL53L0_GetInterruptThresholds,
+	.ClearInterruptMask = VL53L0_ClearInterruptMask,
+	.GetInterruptMaskStatus = VL53L0_GetInterruptMaskStatus,
+	.EnableInterruptMask = VL53L0_EnableInterruptMask,
+	.SetSpadAmbientDamperThreshold = VL53L0_SetSpadAmbientDamperThreshold,
+	.GetSpadAmbientDamperThreshold = VL53L0_GetSpadAmbientDamperThreshold,
+	.SetSpadAmbientDamperFactor = VL53L0_SetSpadAmbientDamperFactor,
+	.GetSpadAmbientDamperFactor = VL53L0_GetSpadAmbientDamperFactor,
+	.PerformRefSpadManagement = VL53L0_PerformRefSpadManagement,
+	.SetReferenceSpads = VL53L0_SetReferenceSpads,
+	.GetReferenceSpads = VL53L0_GetReferenceSpads,
+
+};
+struct stmvl53l0_api_fn_t *papi_func_tbl;
+
+/*
+ * IOCTL definitions
+ */
+#define VL53L0_IOCTL_INIT			_IO('p', 0x01)
+#define VL53L0_IOCTL_XTALKCALB		_IOW('p', 0x02, unsigned int)
+#define VL53L0_IOCTL_OFFCALB		_IOW('p', 0x03, unsigned int)
+#define VL53L0_IOCTL_STOP			_IO('p', 0x05)
+#define VL53L0_IOCTL_SETXTALK		_IOW('p', 0x06, unsigned int)
+#define VL53L0_IOCTL_SETOFFSET		_IOW('p', 0x07, int8_t)
+#define VL53L0_IOCTL_ACTIVATE_USE_CASE	_IOW('p', 0x08, uint8_t)
+#define VL53L0_IOCTL_ACTIVATE_CUSTOM_USE_CASE	\
+			_IOW('p', 0x09, struct stmvl53l0_custom_use_case)
+
+#define VL53L0_IOCTL_GETDATAS \
+			_IOR('p', 0x0b, VL53L0_RangingMeasurementData_t)
+#define VL53L0_IOCTL_REGISTER \
+			_IOWR('p', 0x0c, struct stmvl53l0_register)
+#define VL53L0_IOCTL_PARAMETER \
+			_IOWR('p', 0x0d, struct stmvl53l0_parameter)
+
+
+/* Mask fields to indicate Offset and Xtalk Comp
+ * values have been set by application
+ */
+#define SET_OFFSET_CALIB_DATA_MICROMETER_MASK 0x1
+#define SET_XTALK_COMP_RATE_MCPS_MASK         0x2
+
+/* Macros used across different functions */
+#define USE_CASE_LONG_DISTANCE	1
+#define USE_CASE_HIGH_ACCURACY	2
+#define USE_CASE_HIGH_SPEED		3
+#define USE_CASE_CUSTOM			4
+
+#define LONG_DISTANCE_TIMING_BUDGET			26000
+#define LONG_DISTANCE_SIGNAL_RATE_LIMIT		(65536 / 10) /* 0.1  */
+#define LONG_DISTANCE_SIGMA_LIMIT			(60*65536)
+#define LONG_DISTANCE_PRE_RANGE_PULSE_PERIOD	18
+#define LONG_DISTANCE_FINAL_RANGE_PULSE_PERIOD	14
+
+
+
+#define HIGH_ACCURACY_TIMING_BUDGET				200000
+#define HIGH_ACCURACY_SIGNAL_RATE_LIMIT	 (25 * 65536 / 100) /*0.25*/
+#define HIGH_ACCURACY_SIGMA_LIMIT				(18*65536)
+#define HIGH_ACCURACY_PRE_RANGE_PULSE_PERIOD	14
+#define HIGH_ACCURACY_FINAL_RANGE_PULSE_PERIOD	10
+
+
+
+#define HIGH_SPEED_TIMING_BUDGET				20000
+#define HIGH_SPEED_SIGNAL_RATE_LIMIT	(25 * 65536 / 100) /* 0.25 */
+#define HIGH_SPEED_SIGMA_LIMIT					(32*65536)
+#define HIGH_SPEED_PRE_RANGE_PULSE_PERIOD		14
+#define HIGH_SPEED_FINAL_RANGE_PULSE_PERIOD		10
+
+
+
+
+
+static long stmvl53l0_ioctl(struct file *file,
+				unsigned int cmd, unsigned long arg);
+/*static int stmvl53l0_flush(struct file *file, fl_owner_t id);*/
+static int stmvl53l0_open(struct inode *inode, struct file *file);
+static int stmvl53l0_init_client(struct stmvl53l0_data *data);
+static int stmvl53l0_start(struct stmvl53l0_data *data, uint8_t scaling,
+			init_mode_e mode);
+static int stmvl53l0_stop(struct stmvl53l0_data *data);
+static int stmvl53l0_config_use_case(struct stmvl53l0_data *data);
+
+#ifdef DEBUG_TIME_LOG
+static void stmvl53l0_DebugTimeGet(struct timeval *ptv)
+{
+	do_gettimeofday(ptv);
+}
+
+static void stmvl53l0_DebugTimeDuration(struct timeval *pstart_tv,
+			struct timeval *pstop_tv)
+{
+	long total_sec, total_msec;
+
+	total_sec = pstop_tv->tv_sec - pstart_tv->tv_sec;
+	total_msec = (pstop_tv->tv_usec - pstart_tv->tv_usec)/1000;
+	total_msec += total_sec * 1000;
+	pr_err("elapsedTime:%ld\n", total_msec);
+}
+#endif
+
+static void stmvl53l0_setupAPIFunctions(struct stmvl53l0_data *data)
+{
+	uint8_t revision = 0;
+	VL53L0_DEV vl53l0_dev = data;
+
+	/* Read Revision ID */
+	VL53L0_RdByte(vl53l0_dev,
+				VL53L0_REG_IDENTIFICATION_REVISION_ID,
+				&revision);
+	vl53l0_errmsg("read REVISION_ID: 0x%x\n", revision);
+	revision = (revision & 0xF0) >> 4;
+	if (revision == 1) {
+		/*cut 1.1*/
+		vl53l0_errmsg("to setup API cut 1.1\n");
+		papi_func_tbl->GetVersion = VL53L0_GetVersion;
+		papi_func_tbl->GetPalSpecVersion = VL53L0_GetPalSpecVersion;
+		papi_func_tbl->GetProductRevision = VL53L0_GetProductRevision;
+		papi_func_tbl->GetDeviceInfo = VL53L0_GetDeviceInfo;
+		papi_func_tbl->GetDeviceErrorStatus =
+			 VL53L0_GetDeviceErrorStatus;
+		papi_func_tbl->GetRangeStatusString =
+			 VL53L0_GetRangeStatusString;
+		papi_func_tbl->GetDeviceErrorString =
+			 VL53L0_GetDeviceErrorString;
+		papi_func_tbl->GetPalErrorString =
+			 VL53L0_GetPalErrorString;
+		papi_func_tbl->GetPalState =
+			 VL53L0_GetPalState;
+		papi_func_tbl->SetPowerMode =
+			 VL53L0_SetPowerMode;
+		papi_func_tbl->GetPowerMode =
+			 VL53L0_GetPowerMode;
+		papi_func_tbl->SetOffsetCalibrationDataMicroMeter =
+				VL53L0_SetOffsetCalibrationDataMicroMeter;
+		papi_func_tbl->GetOffsetCalibrationDataMicroMeter =
+				VL53L0_GetOffsetCalibrationDataMicroMeter;
+		papi_func_tbl->SetLinearityCorrectiveGain =
+VL53L0_SetLinearityCorrectiveGain;
+		papi_func_tbl->GetLinearityCorrectiveGain =
+VL53L0_GetLinearityCorrectiveGain;
+		papi_func_tbl->SetGroupParamHold = VL53L0_SetGroupParamHold;
+		papi_func_tbl->GetUpperLimitMilliMeter =
+			 VL53L0_GetUpperLimitMilliMeter;
+		papi_func_tbl->SetDeviceAddress =
+			 VL53L0_SetDeviceAddress;
+		papi_func_tbl->DataInit =
+			 VL53L0_DataInit;
+		papi_func_tbl->SetTuningSettingBuffer =
+			 VL53L0_SetTuningSettingBuffer;
+		papi_func_tbl->GetTuningSettingBuffer =
+			 VL53L0_GetTuningSettingBuffer;
+		papi_func_tbl->StaticInit =
+			 VL53L0_StaticInit;
+		papi_func_tbl->WaitDeviceBooted =
+			 VL53L0_WaitDeviceBooted;
+		papi_func_tbl->ResetDevice =
+			 VL53L0_ResetDevice;
+		papi_func_tbl->SetDeviceParameters =
+			 VL53L0_SetDeviceParameters;
+		papi_func_tbl->SetDeviceMode = VL53L0_SetDeviceMode;
+		papi_func_tbl->GetDeviceMode = VL53L0_GetDeviceMode;
+		papi_func_tbl->SetHistogramMode = VL53L0_SetHistogramMode;
+		papi_func_tbl->GetHistogramMode = VL53L0_GetHistogramMode;
+		papi_func_tbl->SetMeasurementTimingBudgetMicroSeconds =
+		 VL53L0_SetMeasurementTimingBudgetMicroSeconds;
+		papi_func_tbl->GetMeasurementTimingBudgetMicroSeconds =
+			 VL53L0_GetMeasurementTimingBudgetMicroSeconds;
+		papi_func_tbl->GetVcselPulsePeriod = VL53L0_GetVcselPulsePeriod;
+		papi_func_tbl->SetVcselPulsePeriod = VL53L0_SetVcselPulsePeriod;
+		papi_func_tbl->SetSequenceStepEnable =
+				 VL53L0_SetSequenceStepEnable;
+		papi_func_tbl->GetSequenceStepEnable =
+				 VL53L0_GetSequenceStepEnable;
+		papi_func_tbl->GetSequenceStepEnables =
+				 VL53L0_GetSequenceStepEnables;
+		papi_func_tbl->SetSequenceStepTimeout =
+				 VL53L0_SetSequenceStepTimeout;
+		papi_func_tbl->GetSequenceStepTimeout =
+				 VL53L0_GetSequenceStepTimeout;
+		papi_func_tbl->GetNumberOfSequenceSteps =
+				 VL53L0_GetNumberOfSequenceSteps;
+		papi_func_tbl->GetSequenceStepsInfo =
+				 VL53L0_GetSequenceStepsInfo;
+		papi_func_tbl->SetInterMeasurementPeriodMilliSeconds =
+				 VL53L0_SetInterMeasurementPeriodMilliSeconds;
+		papi_func_tbl->GetInterMeasurementPeriodMilliSeconds =
+				VL53L0_GetInterMeasurementPeriodMilliSeconds;
+		papi_func_tbl->SetXTalkCompensationEnable =
+				 VL53L0_SetXTalkCompensationEnable;
+		papi_func_tbl->GetXTalkCompensationEnable =
+				 VL53L0_GetXTalkCompensationEnable;
+		papi_func_tbl->SetXTalkCompensationRateMegaCps =
+				 VL53L0_SetXTalkCompensationRateMegaCps;
+		papi_func_tbl->GetXTalkCompensationRateMegaCps =
+				 VL53L0_GetXTalkCompensationRateMegaCps;
+		papi_func_tbl->GetNumberOfLimitCheck =
+				 VL53L0_GetNumberOfLimitCheck;
+		papi_func_tbl->GetLimitCheckInfo =
+				 VL53L0_GetLimitCheckInfo;
+		papi_func_tbl->SetLimitCheckEnable =
+				 VL53L0_SetLimitCheckEnable;
+		papi_func_tbl->GetLimitCheckEnable =
+				 VL53L0_GetLimitCheckEnable;
+		papi_func_tbl->SetLimitCheckValue =
+				 VL53L0_SetLimitCheckValue;
+		papi_func_tbl->GetLimitCheckValue =
+				 VL53L0_GetLimitCheckValue;
+		papi_func_tbl->GetLimitCheckCurrent =
+				 VL53L0_GetLimitCheckCurrent;
+		papi_func_tbl->SetWrapAroundCheckEnable =
+				 VL53L0_SetWrapAroundCheckEnable;
+		papi_func_tbl->GetWrapAroundCheckEnable =
+				 VL53L0_GetWrapAroundCheckEnable;
+		papi_func_tbl->PerformSingleMeasurement =
+				 VL53L0_PerformSingleMeasurement;
+		papi_func_tbl->PerformRefCalibration =
+				 VL53L0_PerformRefCalibration;
+		papi_func_tbl->SetRefCalibration =
+				 VL53L0_SetRefCalibration;
+		papi_func_tbl->GetRefCalibration =
+					 VL53L0_GetRefCalibration;
+		papi_func_tbl->PerformXTalkCalibration =
+				 VL53L0_PerformXTalkCalibration;
+		papi_func_tbl->PerformOffsetCalibration =
+				 VL53L0_PerformOffsetCalibration;
+		papi_func_tbl->StartMeasurement =
+				 VL53L0_StartMeasurement;
+		papi_func_tbl->StopMeasurement =
+				 VL53L0_StopMeasurement;
+		papi_func_tbl->GetMeasurementDataReady =
+				 VL53L0_GetMeasurementDataReady;
+		papi_func_tbl->WaitDeviceReadyForNewMeasurement =
+			VL53L0_WaitDeviceReadyForNewMeasurement;
+		papi_func_tbl->GetRangingMeasurementData =
+			VL53L0_GetRangingMeasurementData;
+		papi_func_tbl->GetHistogramMeasurementData =
+			VL53L0_GetHistogramMeasurementData;
+		papi_func_tbl->PerformSingleRangingMeasurement =
+			VL53L0_PerformSingleRangingMeasurement;
+		papi_func_tbl->PerformSingleHistogramMeasurement =
+			VL53L0_PerformSingleHistogramMeasurement;
+		papi_func_tbl->SetNumberOfROIZones =
+			 VL53L0_SetNumberOfROIZones;
+		papi_func_tbl->GetNumberOfROIZones =
+			VL53L0_GetNumberOfROIZones;
+		papi_func_tbl->GetMaxNumberOfROIZones =
+			 VL53L0_GetMaxNumberOfROIZones;
+		papi_func_tbl->SetGpioConfig =
+			 VL53L0_SetGpioConfig;
+		papi_func_tbl->GetGpioConfig =
+			 VL53L0_GetGpioConfig;
+		papi_func_tbl->SetInterruptThresholds =
+			 VL53L0_SetInterruptThresholds;
+		papi_func_tbl->GetInterruptThresholds =
+			 VL53L0_GetInterruptThresholds;
+		papi_func_tbl->ClearInterruptMask =
+			 VL53L0_ClearInterruptMask;
+		papi_func_tbl->GetInterruptMaskStatus =
+				 VL53L0_GetInterruptMaskStatus;
+		papi_func_tbl->EnableInterruptMask = VL53L0_EnableInterruptMask;
+		papi_func_tbl->SetSpadAmbientDamperThreshold =
+			VL53L0_SetSpadAmbientDamperThreshold;
+		papi_func_tbl->GetSpadAmbientDamperThreshold =
+			VL53L0_GetSpadAmbientDamperThreshold;
+		papi_func_tbl->SetSpadAmbientDamperFactor =
+			VL53L0_SetSpadAmbientDamperFactor;
+		papi_func_tbl->GetSpadAmbientDamperFactor =
+			VL53L0_GetSpadAmbientDamperFactor;
+		papi_func_tbl->PerformRefSpadManagement =
+			 VL53L0_PerformRefSpadManagement;
+		papi_func_tbl->SetReferenceSpads = VL53L0_SetReferenceSpads;
+		papi_func_tbl->GetReferenceSpads = VL53L0_GetReferenceSpads;
+	} else if (revision == 0) {
+		/*cut 1.0*/
+		vl53l0_errmsg("to setup API cut 1.0\n");
+		papi_func_tbl->GetVersion = VL53L010_GetVersion;
+		papi_func_tbl->GetPalSpecVersion = VL53L010_GetPalSpecVersion;
+		/* papi_func_tbl->GetProductRevision = NULL;*/
+		papi_func_tbl->GetDeviceInfo = VL53L010_GetDeviceInfo;
+		papi_func_tbl->GetDeviceErrorStatus =
+					 VL53L010_GetDeviceErrorStatus;
+		papi_func_tbl->GetDeviceErrorString =
+					 VL53L010_GetDeviceErrorString;
+		papi_func_tbl->GetPalErrorString =
+					 VL53L010_GetPalErrorString;
+		papi_func_tbl->GetPalState =
+					 VL53L010_GetPalState;
+		papi_func_tbl->SetPowerMode =
+					 VL53L010_SetPowerMode;
+		papi_func_tbl->GetPowerMode =
+					 VL53L010_GetPowerMode;
+		papi_func_tbl->SetOffsetCalibrationDataMicroMeter =
+			VL53L010_SetOffsetCalibrationDataMicroMeter;
+		papi_func_tbl->GetOffsetCalibrationDataMicroMeter =
+			VL53L010_GetOffsetCalibrationDataMicroMeter;
+		papi_func_tbl->SetGroupParamHold =
+					 VL53L010_SetGroupParamHold;
+		papi_func_tbl->GetUpperLimitMilliMeter =
+					 VL53L010_GetUpperLimitMilliMeter;
+		papi_func_tbl->SetDeviceAddress =
+					 VL53L010_SetDeviceAddress;
+		papi_func_tbl->DataInit = VL53L010_DataInit;
+		/*
+		 *papi_func_tbl->SetTuningSettingBuffer = NULL;
+		 *papi_func_tbl->GetTuningSettingBuffer = NULL;
+		*/
+		papi_func_tbl->StaticInit = VL53L010_StaticInit;
+		papi_func_tbl->WaitDeviceBooted = VL53L010_WaitDeviceBooted;
+		papi_func_tbl->ResetDevice = VL53L010_ResetDevice;
+		papi_func_tbl->SetDeviceParameters =
+					 VL53L010_SetDeviceParameters;
+		papi_func_tbl->SetDeviceMode = VL53L010_SetDeviceMode;
+		papi_func_tbl->GetDeviceMode = VL53L010_GetDeviceMode;
+		papi_func_tbl->SetHistogramMode = VL53L010_SetHistogramMode;
+		papi_func_tbl->GetHistogramMode = VL53L010_GetHistogramMode;
+		papi_func_tbl->SetMeasurementTimingBudgetMicroSeconds =
+			VL53L010_SetMeasurementTimingBudgetMicroSeconds;
+		papi_func_tbl->GetMeasurementTimingBudgetMicroSeconds =
+			VL53L010_GetMeasurementTimingBudgetMicroSeconds;
+		/*
+		 * papi_func_tbl->GetVcselPulsePeriod = NULL;
+		 *papi_func_tbl->SetVcselPulsePeriod = NULL;
+		 *papi_func_tbl->SetSequenceStepEnable = NULL;
+		 *papi_func_tbl->GetSequenceStepEnable = NULL;
+		 *papi_func_tbl->GetSequenceStepEnables = NULL;
+		 *papi_func_tbl->SetSequenceStepTimeout = NULL;
+		 *papi_func_tbl->GetSequenceStepTimeout = NULL;
+		 *papi_func_tbl->GetNumberOfSequenceSteps =NULL;
+		 *papi_func_tbl->GetSequenceStepsInfo = NULL;
+		 */
+		papi_func_tbl->SetInterMeasurementPeriodMilliSeconds =
+			VL53L010_SetInterMeasurementPeriodMilliSeconds;
+		papi_func_tbl->GetInterMeasurementPeriodMilliSeconds =
+			VL53L010_GetInterMeasurementPeriodMilliSeconds;
+		papi_func_tbl->SetXTalkCompensationEnable =
+			VL53L010_SetXTalkCompensationEnable;
+		papi_func_tbl->GetXTalkCompensationEnable =
+			VL53L010_GetXTalkCompensationEnable;
+		papi_func_tbl->SetXTalkCompensationRateMegaCps =
+			VL53L010_SetXTalkCompensationRateMegaCps;
+		papi_func_tbl->GetXTalkCompensationRateMegaCps =
+			VL53L010_GetXTalkCompensationRateMegaCps;
+		papi_func_tbl->GetNumberOfLimitCheck =
+				 VL53L010_GetNumberOfLimitCheck;
+		papi_func_tbl->GetLimitCheckInfo = VL53L010_GetLimitCheckInfo;
+		papi_func_tbl->SetLimitCheckEnable =
+					 VL53L010_SetLimitCheckEnable;
+		papi_func_tbl->GetLimitCheckEnable =
+					 VL53L010_GetLimitCheckEnable;
+		papi_func_tbl->SetLimitCheckValue =
+					 VL53L010_SetLimitCheckValue;
+		papi_func_tbl->GetLimitCheckValue =
+					 VL53L010_GetLimitCheckValue;
+		papi_func_tbl->GetLimitCheckCurrent =
+					 VL53L010_GetLimitCheckCurrent;
+		papi_func_tbl->SetWrapAroundCheckEnable =
+			VL53L010_SetWrapAroundCheckEnable;
+		papi_func_tbl->GetWrapAroundCheckEnable =
+			VL53L010_GetWrapAroundCheckEnable;
+		papi_func_tbl->PerformSingleMeasurement =
+			VL53L010_PerformSingleMeasurement;
+		/*papi_func_tbl->PerformRefCalibration =
+		 * VL53L010_PerformRefCalibration;
+		 */
+		papi_func_tbl->PerformRefCalibration = NULL;
+		papi_func_tbl->SetRefCalibration = NULL;
+		papi_func_tbl->GetRefCalibration = NULL;
+		papi_func_tbl->PerformXTalkCalibration =
+				 VL53L010_PerformXTalkCalibration;
+		papi_func_tbl->PerformOffsetCalibration =
+			VL53L010_PerformOffsetCalibration;
+		papi_func_tbl->StartMeasurement = VL53L010_StartMeasurement;
+		papi_func_tbl->StopMeasurement = VL53L010_StopMeasurement;
+		papi_func_tbl->GetMeasurementDataReady =
+					 VL53L010_GetMeasurementDataReady;
+		papi_func_tbl->WaitDeviceReadyForNewMeasurement =
+			VL53L010_WaitDeviceReadyForNewMeasurement;
+		papi_func_tbl->GetRangingMeasurementData =
+			VL53L010_GetRangingMeasurementData;
+		papi_func_tbl->GetHistogramMeasurementData =
+			VL53L010_GetHistogramMeasurementData;
+		papi_func_tbl->PerformSingleRangingMeasurement =
+			VL53L010_PerformSingleRangingMeasurement;
+		papi_func_tbl->PerformSingleHistogramMeasurement =
+			VL53L010_PerformSingleHistogramMeasurement;
+		papi_func_tbl->SetNumberOfROIZones =
+				 VL53L010_SetNumberOfROIZones;
+		papi_func_tbl->GetNumberOfROIZones =
+				 VL53L010_GetNumberOfROIZones;
+		papi_func_tbl->GetMaxNumberOfROIZones =
+				 VL53L010_GetMaxNumberOfROIZones;
+		papi_func_tbl->SetGpioConfig = VL53L010_SetGpioConfig;
+		papi_func_tbl->GetGpioConfig = VL53L010_GetGpioConfig;
+		papi_func_tbl->SetInterruptThresholds =
+				 VL53L010_SetInterruptThresholds;
+		papi_func_tbl->GetInterruptThresholds =
+				 VL53L010_GetInterruptThresholds;
+		papi_func_tbl->ClearInterruptMask =
+				 VL53L010_ClearInterruptMask;
+		papi_func_tbl->GetInterruptMaskStatus =
+				 VL53L010_GetInterruptMaskStatus;
+		papi_func_tbl->EnableInterruptMask =
+				 VL53L010_EnableInterruptMask;
+		papi_func_tbl->SetSpadAmbientDamperThreshold =
+			VL53L010_SetSpadAmbientDamperThreshold;
+		papi_func_tbl->GetSpadAmbientDamperThreshold =
+			VL53L010_GetSpadAmbientDamperThreshold;
+		papi_func_tbl->SetSpadAmbientDamperFactor =
+			VL53L010_SetSpadAmbientDamperFactor;
+		papi_func_tbl->GetSpadAmbientDamperFactor =
+			VL53L010_GetSpadAmbientDamperFactor;
+		papi_func_tbl->PerformRefSpadManagement = NULL;
+		papi_func_tbl->SetReferenceSpads = NULL;
+		papi_func_tbl->GetReferenceSpads = NULL;
+	}
+
+}
+
+static void stmvl53l0_ps_read_measurement(struct stmvl53l0_data *data)
+{
+	struct timeval tv;
+	VL53L0_DEV vl53l0_dev = data;
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	FixPoint1616_t LimitCheckCurrent;
+
+	do_gettimeofday(&tv);
+
+	data->ps_data = data->rangeData.RangeMilliMeter;
+	input_report_abs(data->input_dev_ps, ABS_DISTANCE,
+		(int)(data->ps_data + 5) / 10);
+	input_report_abs(data->input_dev_ps, ABS_HAT0X, tv.tv_sec);
+	input_report_abs(data->input_dev_ps, ABS_HAT0Y, tv.tv_usec);
+	input_report_abs(data->input_dev_ps, ABS_HAT1X,
+		data->rangeData.RangeMilliMeter);
+	input_report_abs(data->input_dev_ps, ABS_HAT1Y,
+		data->rangeData.RangeStatus);
+	input_report_abs(data->input_dev_ps, ABS_HAT2X,
+		data->rangeData.SignalRateRtnMegaCps);
+	input_report_abs(data->input_dev_ps, ABS_HAT2Y,
+		data->rangeData.AmbientRateRtnMegaCps);
+	input_report_abs(data->input_dev_ps, ABS_HAT3X,
+		data->rangeData.MeasurementTimeUsec);
+	input_report_abs(data->input_dev_ps, ABS_HAT3Y,
+		data->rangeData.RangeDMaxMilliMeter);
+	Status = papi_func_tbl->GetLimitCheckCurrent(vl53l0_dev,
+					VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE,
+					&LimitCheckCurrent);
+	if (Status == VL53L0_ERROR_NONE) {
+		input_report_abs(data->input_dev_ps, ABS_WHEEL,
+				LimitCheckCurrent);
+	}
+	input_report_abs(data->input_dev_ps, ABS_PRESSURE,
+		data->rangeData.EffectiveSpadRtnCount);
+	input_sync(data->input_dev_ps);
+
+	if (data->enableDebug)
+		vl53l0_errmsg(
+"range:%d, RtnRateMcps:%d,err:0x%x,Dmax:%d,rtnambr:%d,time:%d,Spad:%d,SigmaLimit:%d\n",
+			data->rangeData.RangeMilliMeter,
+			data->rangeData.SignalRateRtnMegaCps,
+			data->rangeData.RangeStatus,
+			data->rangeData.RangeDMaxMilliMeter,
+			data->rangeData.AmbientRateRtnMegaCps,
+			data->rangeData.MeasurementTimeUsec,
+			data->rangeData.EffectiveSpadRtnCount,
+			LimitCheckCurrent
+			);
+
+
+}
+
+static void stmvl53l0_cancel_handler(struct stmvl53l0_data *data)
+{
+	unsigned long flags;
+	bool ret;
+
+	spin_lock_irqsave(&data->update_lock.wait_lock, flags);
+	/*
+	 * If work is already scheduled then subsequent schedules will not
+	 * change the scheduled time that's why we have to cancel it first.
+	 */
+	ret = cancel_delayed_work(&data->dwork);
+	if (ret == 0)
+		vl53l0_errmsg("cancel_delayed_work return FALSE\n");
+
+	spin_unlock_irqrestore(&data->update_lock.wait_lock, flags);
+
+}
+
+void stmvl53l0_schedule_handler(struct stmvl53l0_data *data)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&data->update_lock.wait_lock, flags);
+	/*
+	 * If work is already scheduled then subsequent schedules will not
+	 * change the scheduled time that's why we have to cancel it first.
+	 */
+	cancel_delayed_work(&data->dwork);
+	schedule_delayed_work(&data->dwork, 0);
+	spin_unlock_irqrestore(&data->update_lock.wait_lock, flags);
+
+}
+
+
+#ifdef USE_INT
+static irqreturn_t stmvl53l0_interrupt_handler(int vec, void *info)
+{
+
+	struct stmvl53l0_data *data = (struct stmvl53l0_data *)info;
+
+	if (data->irq == vec) {
+		data->interrupt_received = 1;
+		schedule_delayed_work(&data->dwork, 0);
+	}
+	return IRQ_HANDLED;
+}
+#else
+/* Flag used to exit the thread when kthread_stop() is invoked */
+static int poll_thread_exit;
+int stmvl53l0_poll_thread(void *data)
+{
+	VL53L0_DEV vl53l0_dev = data;
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	uint32_t sleep_time = 0;
+	uint32_t interruptStatus = 0;
+
+	pr_err("%s(%d) : Starting Polling thread\n", __func__, __LINE__);
+
+	while (!kthread_should_stop()) {
+		/* Check if enable_ps_sensor is true or exit request is made.
+		 * If not block
+		 */
+		wait_event(vl53l0_dev->poll_thread_wq,
+			(vl53l0_dev->enable_ps_sensor || poll_thread_exit));
+		if (poll_thread_exit) {
+			pr_err(
+		"%s(%d) : Exiting the poll thread\n", __func__, __LINE__);
+			break;
+		}
+
+		mutex_lock(&vl53l0_dev->work_mutex);
+
+		sleep_time = vl53l0_dev->delay_ms;
+		Status = VL53L0_GetInterruptMaskStatus(vl53l0_dev,
+					 &interruptStatus);
+		if (Status == VL53L0_ERROR_NONE &&
+			interruptStatus &&
+			interruptStatus != vl53l0_dev->interruptStatus) {
+			vl53l0_dev->interruptStatus = interruptStatus;
+			vl53l0_dev->noInterruptCount = 0;
+			stmvl53l0_schedule_handler(vl53l0_dev);
+		} else {
+			vl53l0_dev->noInterruptCount++;
+		}
+
+		/*Force Clear interrupt mask and restart if
+		 *no interrupt after twice the timingBudget
+		 */
+		if ((vl53l0_dev->noInterruptCount * vl53l0_dev->delay_ms) >
+			 (vl53l0_dev->timingBudget * 2)) {
+			pr_err("No interrupt after (%u) msec(TimingBudget = %u) . Clear Interrupt Mask and restart\n",
+				(vl53l0_dev->noInterruptCount *
+					 vl53l0_dev->delay_ms),
+					vl53l0_dev->timingBudget);
+			Status = papi_func_tbl->ClearInterruptMask(vl53l0_dev,
+					 0);
+			if (vl53l0_dev->deviceMode ==
+			 VL53L0_DEVICEMODE_SINGLE_RANGING) {
+				Status = papi_func_tbl->StartMeasurement(
+							vl53l0_dev);
+				if (Status != VL53L0_ERROR_NONE) {
+					pr_err("%s(%d) : Status = %d\n",
+						 __func__, __LINE__, Status);
+				}
+			}
+		}
+		mutex_unlock(&vl53l0_dev->work_mutex);
+		/* Sleep for delay_ms milliseconds */
+		msleep(sleep_time);
+	}
+
+	return 0;
+}
+#endif
+
+/* work handler */
+static void stmvl53l0_work_handler(struct work_struct *work)
+{
+	struct stmvl53l0_data *data = container_of(work, struct stmvl53l0_data,
+				dwork.work);
+	VL53L0_DEV vl53l0_dev = data;
+
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	mutex_lock(&data->work_mutex);
+	/* vl53l0_dbgmsg("Enter\n"); */
+
+
+	if (vl53l0_dev->enable_ps_sensor == 1) {
+#ifdef DEBUG_TIME_LOG
+		stmvl53l0_DebugTimeGet(&stop_tv);
+		stmvl53l0_DebugTimeDuration(&start_tv, &stop_tv);
+#endif
+		/* Check if ISR has scheduled this function */
+		if (vl53l0_dev->interrupt_received == 1) {
+			Status = papi_func_tbl->GetInterruptMaskStatus(
+					vl53l0_dev,
+					&vl53l0_dev->interruptStatus);
+			if (Status != VL53L0_ERROR_NONE)
+				pr_err("%s(%d) : Status = %d\n",
+						 __func__, __LINE__, Status);
+			vl53l0_dev->interrupt_received = 0;
+		}
+		if (data->enableDebug)
+			pr_err("interruptStatus:0x%x, interrupt_received:%d\n",
+				vl53l0_dev->interruptStatus,
+				vl53l0_dev->interrupt_received);
+
+		if (vl53l0_dev->interruptStatus == vl53l0_dev->gpio_function) {
+			Status =
+				papi_func_tbl->GetRangingMeasurementData(
+						vl53l0_dev,
+						&(data->rangeData));
+			/* to push the measurement */
+			if (Status == VL53L0_ERROR_NONE)
+				stmvl53l0_ps_read_measurement(data);
+			else
+				pr_err("%s(%d) : Status = %d\n",
+						__func__, __LINE__, Status);
+
+			if (data->enableDebug)
+				pr_err("Measured range:%d\n",
+					data->rangeData.RangeMilliMeter);
+
+			Status = papi_func_tbl->ClearInterruptMask(
+					vl53l0_dev, 0);
+			if (Status != VL53L0_ERROR_NONE) {
+				pr_err("%s(%d) : Status = %d\n",
+						__func__, __LINE__, Status);
+			}
+
+			if (data->deviceMode ==
+					VL53L0_DEVICEMODE_SINGLE_RANGING) {
+				/* Before restarting measurement
+				 *  check if use case needs to be changed
+				 */
+
+				if (data->updateUseCase) {
+					Status =
+						stmvl53l0_config_use_case(data);
+					if (Status !=
+							VL53L0_ERROR_NONE) {
+						vl53l0_errmsg(
+					"Failed to configure Use case = %u\n",
+							vl53l0_dev->useCase);
+					} else {
+						data->updateUseCase = 0;
+					}
+				}
+				Status =
+					papi_func_tbl->StartMeasurement(
+							vl53l0_dev);
+			}
+		}
+#ifdef DEBUG_TIME_LOG
+		stmvl53l0_DebugTimeGet(&start_tv);
+#endif
+
+		}
+
+
+	vl53l0_dev->interruptStatus = 0;
+
+	mutex_unlock(&data->work_mutex);
+
+}
+
+
+/*
+ * SysFS support
+ */
+static ssize_t stmvl53l0_show_enable_ps_sensor(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+
+	return snprintf(buf, 5, "%d\n", data->enable_ps_sensor);
+}
+
+static ssize_t stmvl53l0_store_enable_ps_sensor(struct device *dev,
+				struct device_attribute *attr, const char *buf,
+				size_t count)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+	unsigned long val = 0;
+
+	int ret = kstrtoul(buf, 10, &val);
+
+	if (ret != 0)
+		return ret;
+
+	if ((val != 0) && (val != 1)) {
+		vl53l0_errmsg("store unvalid value = %lu\n", val);
+		return count;
+	}
+	mutex_lock(&data->work_mutex);
+	vl53l0_dbgmsg("Enter, enable_ps_sensor flag:%d\n",
+		data->enable_ps_sensor);
+	vl53l0_dbgmsg("enable ps senosr ( %ld)\n", val);
+
+	if (val == 1) {
+		/* turn on tof sensor */
+		if (data->enable_ps_sensor == 0) {
+			/* to start */
+			stmvl53l0_start(data, 3, NORMAL_MODE);
+		} else {
+			vl53l0_errmsg("Already enabled. Skip !");
+		}
+	} else {
+		/* turn off tof sensor */
+		if (data->enable_ps_sensor == 1) {
+			data->enable_ps_sensor = 0;
+			/* to stop */
+			stmvl53l0_stop(data);
+		}
+	}
+	vl53l0_dbgmsg("End\n");
+	mutex_unlock(&data->work_mutex);
+
+	return count;
+}
+
+static DEVICE_ATTR(enable_ps_sensor, 0664/*S_IWUGO | S_IRUGO*/,
+				   stmvl53l0_show_enable_ps_sensor,
+					stmvl53l0_store_enable_ps_sensor);
+
+static ssize_t stmvl53l0_show_enable_debug(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+
+	return snprintf(buf, 5, "%d\n", data->enableDebug);
+}
+
+/* for debug */
+static ssize_t stmvl53l0_store_enable_debug(struct device *dev,
+					struct device_attribute *attr, const
+					char *buf, size_t count)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+	unsigned long on = 0;
+
+	int ret = kstrtoul(buf, 10, &on);
+
+	if (ret != 0)
+		return ret;
+
+	if ((on != 0) &&  (on != 1)) {
+		vl53l0_errmsg("set debug=%lu\n", on);
+		return count;
+	}
+	data->enableDebug = on;
+
+	return count;
+}
+
+/* DEVICE_ATTR(name,mode,show,store) */
+static DEVICE_ATTR(enable_debug, 0660/*S_IWUSR | S_IRUGO*/,
+				   stmvl53l0_show_enable_debug,
+					stmvl53l0_store_enable_debug);
+
+static ssize_t stmvl53l0_show_set_delay_ms(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+
+	return snprintf(buf, 5, "%d\n", data->delay_ms);
+}
+
+/* for work handler scheduler time */
+static ssize_t stmvl53l0_store_set_delay_ms(struct device *dev,
+					struct device_attribute *attr,
+					const char *buf, size_t count)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+	unsigned long delay_ms = 0;
+
+	int ret = kstrtoul(buf, 10, &delay_ms);
+
+	if (ret != 0)
+		return ret;
+	if (delay_ms == 0) {
+		vl53l0_errmsg("set delay_ms=%lu\n", delay_ms);
+		return count;
+	}
+	mutex_lock(&data->work_mutex);
+	data->delay_ms = delay_ms;
+	mutex_unlock(&data->work_mutex);
+
+	return count;
+}
+
+/* DEVICE_ATTR(name,mode,show,store) */
+static DEVICE_ATTR(set_delay_ms, 0660/*S_IWUGO | S_IRUGO*/,
+				   stmvl53l0_show_set_delay_ms,
+					stmvl53l0_store_set_delay_ms);
+
+/* Timing Budget */
+static ssize_t stmvl53l0_show_timing_budget(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+
+	return snprintf(buf, 10, "%d\n", data->timingBudget);
+}
+
+static ssize_t stmvl53l0_store_set_timing_budget(struct device *dev,
+					struct device_attribute *attr,
+					const char *buf, size_t count)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+	unsigned long timingBudget = 0;
+	int ret = kstrtoul(buf, 10, &timingBudget);
+
+	if (ret != 0)
+		return ret;
+	if (timingBudget == 0) {
+		vl53l0_errmsg("set timingBudget=%lu\n", timingBudget);
+		return count;
+	}
+	mutex_lock(&data->work_mutex);
+	data->timingBudget = timingBudget;
+	mutex_unlock(&data->work_mutex);
+
+	return count;
+}
+
+/* DEVICE_ATTR(name,mode,show,store) */
+static DEVICE_ATTR(set_timing_budget, 0660/*S_IWUGO | S_IRUGO*/,
+				   stmvl53l0_show_timing_budget,
+					stmvl53l0_store_set_timing_budget);
+
+
+/* Use case  */
+static ssize_t stmvl53l0_show_use_case(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+
+	switch (data->useCase) {
+	case USE_CASE_LONG_DISTANCE:
+		return snprintf(buf, 20, "Long Distance\n");
+	case USE_CASE_HIGH_ACCURACY:
+		return snprintf(buf, 20, "High Accuracy\n");
+	case USE_CASE_HIGH_SPEED:
+		return snprintf(buf, 20, "High Speed\n");
+	default:
+		break;
+	}
+
+	return snprintf(buf, 25, "Unknown use case\n");
+}
+
+static ssize_t stmvl53l0_store_set_use_case(struct device *dev,
+					struct device_attribute *attr,
+					const char *buf, size_t count)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+	unsigned long useCase = 0;
+	int ret = kstrtoul(buf, 10, &useCase);
+
+	if (ret != 0)
+		return ret;
+
+
+	mutex_lock(&data->work_mutex);
+
+	if (useCase == USE_CASE_LONG_DISTANCE) {
+		data->timingBudget = LONG_DISTANCE_TIMING_BUDGET;
+	} else if (useCase == USE_CASE_HIGH_SPEED) {
+		data->timingBudget = HIGH_SPEED_TIMING_BUDGET;
+	} else if (useCase == USE_CASE_HIGH_ACCURACY) {
+		data->timingBudget = HIGH_ACCURACY_TIMING_BUDGET;
+	} else {
+		count = -EINVAL;
+		mutex_unlock(&data->work_mutex);
+		return count;
+	}
+
+	data->useCase = useCase;
+	mutex_unlock(&data->work_mutex);
+
+	return count;
+}
+
+/* DEVICE_ATTR(name,mode,show,store) */
+static DEVICE_ATTR(set_use_case, 0660/*S_IWUGO | S_IRUGO*/,
+				   stmvl53l0_show_use_case,
+					stmvl53l0_store_set_use_case);
+
+
+/* Get Current configuration info */
+static ssize_t stmvl53l0_show_current_configuration(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct stmvl53l0_data *vl53l0_dev = dev_get_drvdata(dev);
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	int ret = -1;
+	FixPoint1616_t	LimitValue = 0;
+	uint8_t LimitEnable = 0;
+	uint32_t refSpadCount = 0;
+	uint8_t isApertureSpads = 0;
+	uint8_t VhvSettings = 0;
+	uint8_t PhaseCal = 0;
+	uint8_t pulsePeriod = 0;
+	uint32_t timingBudget = 0;
+	int32_t offsetCalibrationDataMicroMeter = -1;
+	uint8_t XTalkCompensationEnable = 0;
+	FixPoint1616_t xTalkCompensationRateMegaCps = 0;
+
+
+	ret = scnprintf(buf, PAGE_SIZE, "VL53L0 current configuration:\n");
+
+	mutex_lock(&vl53l0_dev->work_mutex);
+	pr_err("Driver Config:UseCase:%d, offsetCalDistance:%u,xtalkCalDistance:%u,setCalibratedValue:0x%X\n",
+			vl53l0_dev->useCase, vl53l0_dev->offsetCalDistance,
+			vl53l0_dev->xtalkCalDistance,
+			vl53l0_dev->setCalibratedValue);
+
+	ret += scnprintf(buf + ret, PAGE_SIZE - ret,
+			"Driver Config:UseCase:%d, offsetCalDistance:%u,xtalkCalDistance:%u,setCalibratedValue:0x%X\n",
+			vl53l0_dev->useCase,
+			vl53l0_dev->offsetCalDistance,
+			vl53l0_dev->xtalkCalDistance,
+			vl53l0_dev->setCalibratedValue);
+
+	if (vl53l0_dev->useCase == USE_CASE_CUSTOM) {
+		pr_err("CustomUseCase : Sigma=%u :Signal=%u: Pre=%u :Final=%u\n",
+					vl53l0_dev->sigmaLimit,
+					vl53l0_dev->signalRateLimit,
+					vl53l0_dev->preRangePulsePeriod,
+					vl53l0_dev->finalRangePulsePeriod);
+
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret,
+				"CustomUseCase : Sigma=%u :Signal=%u: Pre=%u :Final=%u\n",
+					vl53l0_dev->sigmaLimit,
+					vl53l0_dev->signalRateLimit,
+					vl53l0_dev->preRangePulsePeriod,
+					vl53l0_dev->finalRangePulsePeriod);
+	}
+
+
+	Status = papi_func_tbl->GetLimitCheckValue(vl53l0_dev,
+					VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE,
+					&LimitValue);
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = papi_func_tbl->GetLimitCheckEnable(vl53l0_dev,
+					VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE,
+					&LimitEnable);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("Get LimitCheckValue SIGMA_FINAL_RANGE as:%d,Enable:%d\n",
+				(LimitValue>>16), LimitEnable);
+		ret	+= scnprintf(buf + ret, PAGE_SIZE - ret,
+					 "Sigma Limit:%u, Enable:%u\n",
+					(LimitValue>>16),
+					 LimitEnable);
+		Status = papi_func_tbl->GetLimitCheckValue(vl53l0_dev,
+				VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+				&LimitValue);
+		Status = papi_func_tbl->GetLimitCheckEnable(vl53l0_dev,
+				VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+				&LimitEnable);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("Get LimitCheckValue SIGNAL_FINAL_RANGE as:%d(Fix1616),Enable:%d\n",
+				(LimitValue), LimitEnable);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret,
+							 "SIGNAL Limit:%u, Enable:%u\n",
+							LimitValue,
+							LimitEnable);
+
+		Status = papi_func_tbl->GetLimitCheckValue(vl53l0_dev,
+				VL53L0_CHECKENABLE_SIGNAL_REF_CLIP,
+				&LimitValue);
+		Status = papi_func_tbl->GetLimitCheckEnable(vl53l0_dev,
+				VL53L0_CHECKENABLE_SIGNAL_REF_CLIP,
+				&LimitEnable);
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("Get LimitCheckValue SIGNAL_REF_CLIP as:%d(fix1616),Enable:%d\n",
+				(LimitValue), LimitEnable);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret,
+					"RefClipLimit:%u, Enable:%u\n",
+					LimitValue,
+					LimitEnable);
+
+		Status = papi_func_tbl->GetLimitCheckValue(vl53l0_dev,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				&LimitValue);
+		Status = papi_func_tbl->GetLimitCheckEnable(vl53l0_dev,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				&LimitEnable);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err(
+	"Get LimitCheckValue RANGE_IGNORE_THRESHOLDas:%d(fix1616),Enable:%d\n",
+				(LimitValue),
+				LimitEnable);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret,
+				 "RngIgnoreThresh:%u, Enable:%u\n",
+				LimitValue,
+				LimitEnable);
+
+		Status = papi_func_tbl->GetRefCalibration(vl53l0_dev,
+				&VhvSettings, &PhaseCal); /* Ref calibration */
+
+
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("GetRefCalibration - Vhv = %u, PhaseCal = %u\n",
+						VhvSettings, PhaseCal);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret,
+					"Vhv:%u, PhCal:%u\n",
+					VhvSettings,
+					PhaseCal);
+
+		/* Ref Spad Management */
+		Status = papi_func_tbl->GetReferenceSpads(vl53l0_dev,
+			&refSpadCount, &isApertureSpads);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("GetSpads - Count = %u, IsAperture = %u\n",
+						refSpadCount, isApertureSpads);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret,
+						"SpadCount:%u, IsAperture:%u\n",
+						refSpadCount,
+						isApertureSpads);
+
+		Status = papi_func_tbl->GetMeasurementTimingBudgetMicroSeconds(
+					vl53l0_dev,
+					&timingBudget);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("TimingBudget = %u\n", timingBudget);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret, "TimBudget:%u\n",
+								timingBudget);
+		Status = papi_func_tbl->GetVcselPulsePeriod(vl53l0_dev,
+					VL53L0_VCSEL_PERIOD_PRE_RANGE,
+					&pulsePeriod);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("GetVcselPulsePeriod - PRE_RANGE = %u\n",
+						pulsePeriod);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret,
+					 "PulsePreRange:%u\n",
+					pulsePeriod);
+
+		Status = papi_func_tbl->GetVcselPulsePeriod(vl53l0_dev,
+					VL53L0_VCSEL_PERIOD_FINAL_RANGE,
+					&pulsePeriod);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("GetVcselPulsePeriod - FINAL_RANGE = %u\n",
+						pulsePeriod);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret,
+				 "PulseFinalRange:%u\n",
+				pulsePeriod);
+
+		Status = papi_func_tbl->GetOffsetCalibrationDataMicroMeter(
+				vl53l0_dev,
+				&offsetCalibrationDataMicroMeter);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("OffsetCalibrationDataMicroMeter = %d\n",
+				 offsetCalibrationDataMicroMeter);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret, "Offset:%d\n",
+					offsetCalibrationDataMicroMeter);
+
+		Status = papi_func_tbl->GetXTalkCompensationEnable(vl53l0_dev,
+					&XTalkCompensationEnable);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("Xtalk Enable = %u\n", XTalkCompensationEnable);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret, "XtalkEnable:%u\n",
+					XTalkCompensationEnable);
+
+		Status = papi_func_tbl->GetXTalkCompensationRateMegaCps(
+					vl53l0_dev,
+					&xTalkCompensationRateMegaCps);
+	}
+
+
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("XtalkComp MCPS = %u\n", xTalkCompensationRateMegaCps);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret, "XtalkMcps:%u\n",
+					xTalkCompensationRateMegaCps);
+
+	} else {
+		pr_err("Error = %d\n", Status);
+		ret += scnprintf(buf + ret, PAGE_SIZE - ret, "Error:%d\n",
+					Status);
+
+	}
+
+	pr_err("Total Bytes returned = %d\n", ret);
+
+	mutex_unlock(&vl53l0_dev->work_mutex);
+
+
+	return ret;
+}
+
+/* DEVICE_ATTR(name,mode,show,store) */
+static DEVICE_ATTR(show_current_configuration, 0660/*S_IWUGO | S_IRUGO*/,
+				   stmvl53l0_show_current_configuration,
+					NULL);
+/* for work handler scheduler time */
+static ssize_t stmvl53l0_do_flush(struct device *dev,
+					struct device_attribute *attr,
+					const char *buf, size_t count)
+{
+	struct stmvl53l0_data *data = dev_get_drvdata(dev);
+
+	int ret = 0;
+	/* Revisit : Avoid lock if it takes too long time */
+	mutex_lock(&data->work_mutex);
+
+	vl53l0_dbgmsg("Starting timer to fire in 1ms (%ld)\n", jiffies);
+	ret = mod_timer(&data->timer, jiffies + msecs_to_jiffies(1));
+	if (ret)
+		pr_err("Error from mod_timer = %d\n", ret);
+
+	mutex_unlock(&data->work_mutex);
+	return count;
+}
+
+/* DEVICE_ATTR(name,mode,show,store) */
+static DEVICE_ATTR(do_flush, 0660/*S_IWUGO | S_IRUGO*/,
+				   NULL,
+					stmvl53l0_do_flush);
+static struct attribute *stmvl53l0_attributes[] = {
+	&dev_attr_enable_ps_sensor.attr,
+	&dev_attr_enable_debug.attr,
+	&dev_attr_set_delay_ms.attr,
+	&dev_attr_set_timing_budget.attr,
+	&dev_attr_set_use_case.attr,
+	&dev_attr_do_flush.attr,
+	&dev_attr_show_current_configuration.attr,
+	NULL
+};
+
+
+static const struct attribute_group stmvl53l0_attr_group = {
+	.attrs = stmvl53l0_attributes,
+};
+
+/*
+ * misc device file operation functions
+ */
+static int stmvl53l0_ioctl_handler(struct file *file,
+			unsigned int cmd, unsigned long arg,
+			void __user *p)
+{
+	int rc = 0;
+	unsigned int xtalkint = 0;
+	unsigned int targetDistance = 0;
+	int8_t offsetint = 0;
+	uint8_t useCase = 0;
+	struct stmvl53l0_custom_use_case customUseCase;
+	struct stmvl53l0_data *data =
+			container_of(file->private_data,
+				struct stmvl53l0_data, miscdev);
+	struct stmvl53l0_register reg;
+	struct stmvl53l0_parameter parameter;
+	VL53L0_DEV vl53l0_dev = data;
+	VL53L0_DeviceModes deviceMode;
+	uint8_t page_num = 0;
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	if (!data)
+		return -EINVAL;
+
+	vl53l0_dbgmsg("Enter enable_ps_sensor:%d\n", data->enable_ps_sensor);
+	switch (cmd) {
+	/* enable */
+	case VL53L0_IOCTL_INIT:
+		vl53l0_dbgmsg("VL53L0_IOCTL_INIT\n");
+		/* turn on tof sensor only if it's not enabled by other
+		 * client
+		 */
+		if (data->enable_ps_sensor == 0) {
+			/* to start */
+			stmvl53l0_start(data, 3, NORMAL_MODE);
+		} else
+			rc = -EINVAL;
+		break;
+	/* crosstalk calibration */
+	case VL53L0_IOCTL_XTALKCALB:
+		vl53l0_dbgmsg("VL53L0_IOCTL_XTALKCALB\n");
+		data->xtalkCalDistance = 100;
+		if (copy_from_user(&targetDistance, (unsigned int *)p,
+			sizeof(unsigned int))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+		data->xtalkCalDistance = targetDistance;
+
+		/* turn on tof sensor only if it's not enabled by other
+		 * client
+		 */
+		if (data->enable_ps_sensor == 0) {
+			/* to start */
+			stmvl53l0_start(data, 3, XTALKCALIB_MODE);
+		} else
+			rc = -EINVAL;
+		break;
+	/* set up Xtalk value */
+	case VL53L0_IOCTL_SETXTALK:
+		vl53l0_dbgmsg("VL53L0_IOCTL_SETXTALK\n");
+		if (copy_from_user(&xtalkint, (unsigned int *)p,
+			sizeof(unsigned int))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+		vl53l0_dbgmsg("SETXTALK as 0x%x\n", xtalkint);
+
+		/* later
+		* SetXTalkCompensationRate(vl53l0_dev, xtalkint);
+		*/
+		break;
+	/* offset calibration */
+	case VL53L0_IOCTL_OFFCALB:
+		vl53l0_dbgmsg("VL53L0_IOCTL_OFFCALB\n");
+		data->offsetCalDistance = 50;
+		if (copy_from_user(&targetDistance, (unsigned int *)p,
+			sizeof(unsigned int))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+		data->offsetCalDistance = targetDistance;
+		if (data->enable_ps_sensor == 0) {
+			/* to start */
+			stmvl53l0_start(data, 3, OFFSETCALIB_MODE);
+		} else
+			rc = -EINVAL;
+		break;
+	/* set up offset value */
+	case VL53L0_IOCTL_SETOFFSET:
+		vl53l0_dbgmsg("VL53L0_IOCTL_SETOFFSET\n");
+		if (copy_from_user(&offsetint, (int8_t *)p, sizeof(int8_t))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+		vl53l0_dbgmsg("SETOFFSET as %d\n", offsetint);
+
+		/* later
+		* SetOffsetCalibrationData(vl53l0_dev, offsetint);
+		*/
+		break;
+
+	/* Config use case */
+	case VL53L0_IOCTL_ACTIVATE_USE_CASE:
+		vl53l0_dbgmsg("VL53L0_IOCTL_ACTIVATE_USE_CASE\n");
+		if (copy_from_user(&useCase, (uint8_t *)p, sizeof(uint8_t))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+
+		/* Validate the user passed use case.
+		 * Update the timingBudget value. The other
+		 * parameters are updated approrpiately in config_use_case()
+	     * Currently the timing budget can be updated through
+	     * sysfs entry, and this needs additional steps to manage.
+		 */
+		switch (useCase) {
+		case USE_CASE_LONG_DISTANCE:
+			data->timingBudget = LONG_DISTANCE_TIMING_BUDGET;
+			break;
+
+		case USE_CASE_HIGH_ACCURACY:
+			data->timingBudget = HIGH_ACCURACY_TIMING_BUDGET;
+			break;
+
+		case USE_CASE_HIGH_SPEED:
+			data->timingBudget = HIGH_SPEED_TIMING_BUDGET;
+			break;
+
+		default:
+			vl53l0_errmsg("%d, Unknown Use case = %u\n", __LINE__,
+				 useCase);
+			return -EFAULT;
+		}
+		vl53l0_dbgmsg("useCase as %d\n", useCase);
+		/* record the use case */
+		data->useCase = useCase;
+
+		/* If ranging is in progress, let the work handler
+		 * update the use case
+		 */
+		if (data->enable_ps_sensor)
+			data->updateUseCase = 1;
+		break;
+
+	/* Config Custom use case */
+	case VL53L0_IOCTL_ACTIVATE_CUSTOM_USE_CASE:
+		vl53l0_dbgmsg("VL53L0_IOCTL_ACTIVATE_CUSTOM_USE_CASE\n");
+		if (copy_from_user(&customUseCase,
+			 (struct stmvl53l0_custom_use_case *)p,
+			sizeof(struct stmvl53l0_custom_use_case))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+
+		data->sigmaLimit = customUseCase.sigmaLimit;
+		data->signalRateLimit = customUseCase.signalRateLimit;
+		data->preRangePulsePeriod = customUseCase.preRangePulsePeriod;
+		data->finalRangePulsePeriod =
+					customUseCase.finalRangePulsePeriod;
+		data->timingBudget = customUseCase.timingBudget;
+		vl53l0_dbgmsg(
+			"Sigma=%u,Signal=%u,Pre=%u,Final=%u,timingBudget=%u\n",
+						data->sigmaLimit,
+						 data->signalRateLimit,
+						data->preRangePulsePeriod,
+						 data->finalRangePulsePeriod,
+						data->timingBudget);
+
+		/* record the use case */
+		data->useCase = USE_CASE_CUSTOM;
+		/* If ranging is in progress,
+		 * let the work handler update the use case
+		 */
+		if (data->enable_ps_sensor)
+			data->updateUseCase = 1;
+
+		break;
+
+
+	/* disable */
+	case VL53L0_IOCTL_STOP:
+		vl53l0_dbgmsg("VL53L0_IOCTL_STOP\n");
+		/* turn off tof sensor only if it's enabled by other client */
+		if (data->enable_ps_sensor == 1) {
+			data->enable_ps_sensor = 0;
+			/* to stop */
+			stmvl53l0_stop(data);
+		}
+		break;
+	/* Get all range data */
+	case VL53L0_IOCTL_GETDATAS:
+		vl53l0_dbgmsg("VL53L0_IOCTL_GETDATAS\n");
+		if (copy_to_user((VL53L0_RangingMeasurementData_t *)p,
+			&(data->rangeData),
+			sizeof(VL53L0_RangingMeasurementData_t))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+		break;
+	/* Register tool */
+	case VL53L0_IOCTL_REGISTER:
+		vl53l0_dbgmsg("VL53L0_IOCTL_REGISTER\n");
+		if (copy_from_user(&reg, (struct stmvl53l0_register *)p,
+			sizeof(struct stmvl53l0_register))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+		reg.status = 0;
+		page_num = (uint8_t)((reg.reg_index & 0x0000ff00) >> 8);
+		vl53l0_dbgmsg(
+"VL53L0_IOCTL_REGISTER,	page number:%d\n", page_num);
+		if (page_num != 0)
+			reg.status = VL53L0_WrByte(vl53l0_dev, 0xFF, page_num);
+
+		switch (reg.reg_bytes) {
+		case(4):
+			if (reg.is_read)
+				reg.status = VL53L0_RdDWord(vl53l0_dev,
+					(uint8_t)reg.reg_index,
+					&reg.reg_data);
+			else
+				reg.status = VL53L0_WrDWord(vl53l0_dev,
+					(uint8_t)reg.reg_index,
+					reg.reg_data);
+			break;
+		case(2):
+			if (reg.is_read)
+				reg.status = VL53L0_RdWord(vl53l0_dev,
+					(uint8_t)reg.reg_index,
+					(uint16_t *)&reg.reg_data);
+			else
+				reg.status = VL53L0_WrWord(vl53l0_dev,
+					(uint8_t)reg.reg_index,
+					(uint16_t)reg.reg_data);
+			break;
+		case(1):
+			if (reg.is_read)
+				reg.status = VL53L0_RdByte(vl53l0_dev,
+					(uint8_t)reg.reg_index,
+					(uint8_t *)&reg.reg_data);
+			else
+				reg.status = VL53L0_WrByte(vl53l0_dev,
+					(uint8_t)reg.reg_index,
+					(uint8_t)reg.reg_data);
+			break;
+		default:
+			reg.status = -1;
+
+		}
+		if (page_num != 0)
+			reg.status = VL53L0_WrByte(vl53l0_dev, 0xFF, 0);
+
+
+		if (copy_to_user((struct stmvl53l0_register *)p, &reg,
+				sizeof(struct stmvl53l0_register))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+		break;
+	/* parameter access */
+	case VL53L0_IOCTL_PARAMETER:
+		vl53l0_dbgmsg("VL53L0_IOCTL_PARAMETER\n");
+		if (copy_from_user(&parameter, (struct stmvl53l0_parameter *)p,
+				sizeof(struct stmvl53l0_parameter))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+		parameter.status = 0;
+		if (data->enableDebug)
+			vl53l0_dbgmsg(
+			"VL53L0_IOCTL_PARAMETER Name = %d\n", parameter.name);
+		switch (parameter.name) {
+		case (OFFSET_PAR):
+			if (parameter.is_read)
+				parameter.status =
+			    papi_func_tbl->GetOffsetCalibrationDataMicroMeter(
+						vl53l0_dev, &parameter.value);
+			else {
+				parameter.status =
+			    papi_func_tbl->SetOffsetCalibrationDataMicroMeter(
+						vl53l0_dev, parameter.value);
+				  data->OffsetMicroMeter = parameter.value;
+				  data->setCalibratedValue
+			       |= SET_OFFSET_CALIB_DATA_MICROMETER_MASK;
+
+			}
+			vl53l0_dbgmsg("get parameter value as %d\n",
+				 parameter.value);
+			break;
+
+		case (REFERENCESPADS_PAR):
+			if (parameter.is_read) {
+				parameter.status =
+				  papi_func_tbl->GetReferenceSpads(vl53l0_dev,
+						(uint32_t *)&(parameter.value),
+				    (uint8_t *)&(parameter.value2));
+				if (data->enableDebug)
+					vl53l0_dbgmsg(
+						"Get RefSpad : Count:%u, Type:%u\n",
+						parameter.value,
+						(uint8_t)parameter.value2);
+			} else {
+				if (data->enableDebug)
+					vl53l0_dbgmsg(
+					"Set RefSpad : Count:%u, Type:%u\n",
+					parameter.value,
+					(uint8_t)parameter.value2);
+
+				parameter.status =
+				  papi_func_tbl->SetReferenceSpads(vl53l0_dev,
+				(uint32_t)(parameter.value),
+				(uint8_t)(parameter.value2));
+
+				data->refSpadCount = parameter.value;
+				data->isApertureSpads =
+					(uint8_t)(parameter.value2);
+			}
+			break;
+
+		case (REFCALIBRATION_PAR):
+			if (parameter.is_read) {
+				parameter.status =
+			     papi_func_tbl->GetRefCalibration(vl53l0_dev,
+			     (uint8_t *)&(parameter.value),
+			     (uint8_t *)&(parameter.value2));
+					if (data->enableDebug)
+						vl53l0_dbgmsg(
+						"Get Ref : Vhv:%u, PhaseCal:%u\n",
+						(uint8_t)parameter.value,
+						(uint8_t)parameter.value2);
+			} else {
+				if (data->enableDebug)
+					vl53l0_dbgmsg(
+					"Set Ref : Vhv:%u, PhaseCal:%u\n",
+					(uint8_t)parameter.value,
+					(uint8_t)parameter.value2);
+					parameter.status =
+					    papi_func_tbl->SetRefCalibration(
+					    vl53l0_dev,
+					    (uint8_t)(parameter.value),
+					    (uint8_t)(parameter.value2));
+				data->VhvSettings = (uint8_t)parameter.value;
+				data->PhaseCal    = (uint8_t)(parameter.value2);
+			}
+			break;
+		case (XTALKRATE_PAR):
+			if (parameter.is_read)
+				parameter.status =
+				papi_func_tbl->GetXTalkCompensationRateMegaCps(
+				    vl53l0_dev,
+				    (FixPoint1616_t *)
+				    &parameter.value);
+			else {
+				/* Range Ignore Threshold value */
+				FixPoint1616_t ritValue = 0;
+
+				parameter.status =
+			papi_func_tbl->SetXTalkCompensationRateMegaCps(
+						vl53l0_dev,
+						(FixPoint1616_t)
+							parameter.value);
+				data->XTalkCompensationRateMegaCps =
+					 parameter.value;
+				data->setCalibratedValue |=
+					 SET_XTALK_COMP_RATE_MCPS_MASK;
+
+
+				/*0.7 KCps converted to MCps */
+				if (data->XTalkCompensationRateMegaCps <
+						 7*65536/10000) {
+					ritValue = 15 * 7 * 65536/100000;
+				} else {
+					ritValue = 15 *
+					vl53l0_dev->XTalkCompensationRateMegaCps
+							 /10;
+				}
+
+				if (papi_func_tbl->SetLimitCheckEnable
+					!= NULL) {
+					Status =
+					papi_func_tbl->SetLimitCheckEnable(
+					vl53l0_dev,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+					1);
+				}
+
+				if ((Status == VL53L0_ERROR_NONE)  &&
+					(papi_func_tbl->SetLimitCheckValue
+						 != NULL)) {
+					vl53l0_dbgmsg(
+					"Set RIT - %u\n", ritValue);
+					Status =
+				papi_func_tbl->SetLimitCheckValue(
+				vl53l0_dev,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				ritValue);
+				}
+
+			}
+			break;
+		case (XTALKENABLE_PAR):
+			if (parameter.is_read)
+				parameter.status =
+				papi_func_tbl->GetXTalkCompensationEnable(
+					vl53l0_dev,
+					(uint8_t *) &parameter.value);
+			else
+				parameter.status =
+				papi_func_tbl->SetXTalkCompensationEnable(
+				vl53l0_dev,
+				(uint8_t) parameter.value);
+			break;
+		case (GPIOFUNC_PAR):
+			if (parameter.is_read) {
+				parameter.status =
+				papi_func_tbl->GetGpioConfig(
+				vl53l0_dev,
+				0,
+				&deviceMode,
+				&data->gpio_function,
+				&data->gpio_polarity);
+				parameter.value =
+					 data->gpio_function;
+			} else {
+				data->gpio_function = parameter.value;
+				parameter.status =
+				  papi_func_tbl->SetGpioConfig(
+					vl53l0_dev,
+					 0,
+					 0,
+					data->gpio_function,
+					data->gpio_polarity);
+			}
+			break;
+		case (LOWTHRESH_PAR):
+			if (parameter.is_read) {
+				parameter.status =
+				  papi_func_tbl->GetInterruptThresholds(
+					vl53l0_dev,
+					 0,
+					&(data->low_threshold),
+					&(data->high_threshold));
+				parameter.value =
+					 data->low_threshold >> 16;
+			} else {
+				data->low_threshold = parameter.value << 16;
+				parameter.status =
+				  papi_func_tbl->SetInterruptThresholds(
+					vl53l0_dev,
+					 0,
+					data->low_threshold,
+					 data->high_threshold);
+			}
+			break;
+		case (HIGHTHRESH_PAR):
+			if (parameter.is_read) {
+				parameter.status =
+				  papi_func_tbl->GetInterruptThresholds(
+					vl53l0_dev,
+					 0,
+					&(data->low_threshold),
+					 &(data->high_threshold));
+				parameter.value =
+					data->high_threshold >> 16;
+			} else {
+				data->high_threshold =
+					 parameter.value << 16;
+				parameter.status =
+				  papi_func_tbl->SetInterruptThresholds(
+					vl53l0_dev,
+					 0,
+					data->low_threshold,
+					 data->high_threshold);
+			}
+			break;
+		case (DEVICEMODE_PAR):
+			if (parameter.is_read) {
+				parameter.status =
+					papi_func_tbl->GetDeviceMode(
+					vl53l0_dev,
+				 (VL53L0_DeviceModes *)&(parameter.value));
+			} else {
+				parameter.status =
+				  papi_func_tbl->SetDeviceMode(
+					vl53l0_dev,
+					(VL53L0_DeviceModes)(parameter.value));
+				data->deviceMode =
+				 (VL53L0_DeviceModes)(parameter.value);
+			}
+			break;
+
+
+
+		case (INTERMEASUREMENT_PAR):
+			if (parameter.is_read) {
+				parameter.status =
+			   papi_func_tbl->GetInterMeasurementPeriodMilliSeconds(
+					vl53l0_dev,
+					(uint32_t *)&(parameter.value));
+			} else {
+				parameter.status =
+			  papi_func_tbl->SetInterMeasurementPeriodMilliSeconds(
+					vl53l0_dev,
+					(uint32_t)(parameter.value));
+				data->interMeasurems = parameter.value;
+			}
+			break;
+
+		}
+
+		if (copy_to_user((struct stmvl53l0_parameter *)p, &parameter,
+				sizeof(struct stmvl53l0_parameter))) {
+			vl53l0_errmsg("%d, fail\n", __LINE__);
+			return -EFAULT;
+		}
+		break;
+	default:
+		rc = -EINVAL;
+		break;
+	}
+
+	return rc;
+}
+
+static int stmvl53l0_open(struct inode *inode, struct file *file)
+{
+	return 0;
+}
+
+/* Flush will be invoked on close(device_fd) */
+static int stmvl53l0_flush(struct file *file, fl_owner_t id)
+{
+	struct stmvl53l0_data *data = container_of(file->private_data,
+					struct stmvl53l0_data, miscdev);
+	(void) file;
+	(void) id;
+	/* Revisit : Check if the
+	 *instance are opened multiple times on some platforms
+	 */
+	mutex_lock(&data->work_mutex);
+	if (data) {
+		if (data->enable_ps_sensor == 1) {
+			/* turn off tof sensor if it's enabled */
+			data->enable_ps_sensor = 0;
+			/* to stop */
+			stmvl53l0_stop(data);
+		}
+	}
+	mutex_unlock(&data->work_mutex);
+
+	return 0;
+}
+
+static long stmvl53l0_ioctl(struct file *file,
+				unsigned int cmd, unsigned long arg)
+{
+	long ret;
+	struct stmvl53l0_data *data =
+			container_of(file->private_data,
+					struct stmvl53l0_data, miscdev);
+	mutex_lock(&data->work_mutex);
+	ret = stmvl53l0_ioctl_handler(file, cmd, arg, (void __user *)arg);
+	mutex_unlock(&data->work_mutex);
+
+	return ret;
+}
+
+/*
+ * Initialization function
+ */
+static int stmvl53l0_init_client(struct stmvl53l0_data *data)
+{
+
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+	VL53L0_DeviceInfo_t DeviceInfo;
+	VL53L0_DEV vl53l0_dev = data;
+	uint32_t refSpadCount;
+	uint8_t isApertureSpads;
+	uint8_t VhvSettings;
+	uint8_t PhaseCal;
+
+
+	vl53l0_dbgmsg("Enter\n");
+
+	data->I2cDevAddr      = 0x52;
+	data->comms_type      = 1;
+	data->comms_speed_khz = 400;
+
+
+
+	/* Setup API functions based on revision */
+	stmvl53l0_setupAPIFunctions(data);
+
+	/* Perform Ref and RefSpad calibrations and save the values */
+
+
+	if (data->reset) {
+		pr_err("Call of VL53L0_DataInit\n");
+		/* Data initialization */
+		Status = papi_func_tbl->DataInit(vl53l0_dev);
+		/* data->reset = 0; */
+		if (Status != VL53L0_ERROR_NONE) {
+			vl53l0_errmsg(
+			 "%d- error status %d\n", __LINE__, Status);
+			return Status;
+		}
+	}
+
+	vl53l0_dbgmsg("VL53L0_GetDeviceInfo:\n");
+	Status = papi_func_tbl->GetDeviceInfo(vl53l0_dev, &DeviceInfo);
+	if (Status == VL53L0_ERROR_NONE) {
+		pr_err("Device Name : %s\n", DeviceInfo.Name);
+		pr_err("Device Type : %s\n", DeviceInfo.Type);
+		pr_err("Device ID : %s\n", DeviceInfo.ProductId);
+		pr_err("Product type: %d\n", DeviceInfo.ProductType);
+		pr_err("ProductRevisionMajor : %d\n",
+			DeviceInfo.ProductRevisionMajor);
+		pr_err("ProductRevisionMinor : %d\n",
+				DeviceInfo.ProductRevisionMinor);
+	}
+		/* Device Initialization */
+	vl53l0_dbgmsg("Call of VL53L0_StaticInit\n");
+	Status = papi_func_tbl->StaticInit(vl53l0_dev);
+	if (Status != VL53L0_ERROR_NONE) {
+		vl53l0_errmsg("%d- error status %d\n", __LINE__, Status);
+		return Status;
+	}
+
+
+
+
+
+	if (papi_func_tbl->PerformRefCalibration != NULL && data->reset) {
+		vl53l0_dbgmsg("Call of VL53L0_PerformRefCalibration\n");
+		Status = papi_func_tbl->PerformRefCalibration(vl53l0_dev,
+				&VhvSettings, &PhaseCal); /* Ref calibration */
+		if (Status !=
+			 VL53L0_ERROR_NONE) {
+			vl53l0_errmsg(
+			"%d- error status %d\n", __LINE__, Status);
+			return Status;
+		}
+	}
+	vl53l0_dbgmsg("VHV = %u, PhaseCal = %u\n", VhvSettings, PhaseCal);
+	vl53l0_dev->VhvSettings = VhvSettings;
+	vl53l0_dev->PhaseCal = PhaseCal;
+
+	if (papi_func_tbl->PerformRefSpadManagement != NULL && data->reset) {
+		vl53l0_dbgmsg(
+			"Call of VL53L0_PerformRefSpadManagement\n");
+		Status = papi_func_tbl->PerformRefSpadManagement(vl53l0_dev,
+				&refSpadCount,
+				&isApertureSpads); /* Ref Spad Management */
+		if (Status != VL53L0_ERROR_NONE) {
+			vl53l0_errmsg(
+			"%d- error status %d\n", __LINE__, Status);
+			return Status;
+		}
+	}
+
+	vl53l0_dbgmsg(
+		"SpadCount = %u, isAperature = %u\n",
+		 refSpadCount, isApertureSpads);
+	vl53l0_dev->refSpadCount = refSpadCount;
+	vl53l0_dev->isApertureSpads = isApertureSpads;
+
+
+
+
+	if (Status == VL53L0_ERROR_NONE && data->reset) {
+		if ((papi_func_tbl->SetOffsetCalibrationDataMicroMeter
+			  != NULL) &&
+		(vl53l0_dev->setCalibratedValue &
+			 SET_OFFSET_CALIB_DATA_MICROMETER_MASK)) {
+			vl53l0_dbgmsg(
+			"Call of SetOffsetCalibrationDataMicroMeter\n");
+			Status =
+			papi_func_tbl->SetOffsetCalibrationDataMicroMeter(
+				vl53l0_dev,
+				vl53l0_dev->OffsetMicroMeter);
+			if (Status != VL53L0_ERROR_NONE) {
+				vl53l0_errmsg(
+				"%d- error status %d\n", __LINE__, Status);
+				return Status;
+			}
+		}
+	}
+
+
+
+	if (data->reset) {
+		if ((papi_func_tbl->SetXTalkCompensationRateMegaCps != NULL) &&
+		(vl53l0_dev->setCalibratedValue &
+			SET_XTALK_COMP_RATE_MCPS_MASK)) {
+			vl53l0_dbgmsg(
+			"Call of SetXTalkCompensationRateMegaCps\n");
+			Status = papi_func_tbl->SetXTalkCompensationRateMegaCps(
+				vl53l0_dev,
+				vl53l0_dev->XTalkCompensationRateMegaCps);
+			if (Status != VL53L0_ERROR_NONE) {
+				vl53l0_errmsg(
+					"%d- error status %d\n",
+					 __LINE__, Status);
+				return Status;
+			}
+		}
+	}
+
+	if (data->reset) {
+		if (vl53l0_dev->setCalibratedValue &
+			/* Xtalk calibration done*/
+			 SET_XTALK_COMP_RATE_MCPS_MASK) {
+			/* Range Ignore Threshold */
+			FixPoint1616_t ritValue = 0;
+
+			if (vl53l0_dev->XTalkCompensationRateMegaCps <
+				7*65536/10000) {
+				/*0.7 KCps converted to MCps */
+				ritValue = 15 * 7 * 65536/100000;
+			} else {
+				ritValue = 15 *
+				 vl53l0_dev->XTalkCompensationRateMegaCps/10;
+			}
+
+			if (papi_func_tbl->SetLimitCheckEnable != NULL) {
+				Status = papi_func_tbl->SetLimitCheckEnable(
+				vl53l0_dev,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				1);
+				if (Status != VL53L0_ERROR_NONE) {
+					vl53l0_errmsg(
+					"%d- error status %d\n", __LINE__,
+					 Status);
+					return Status;
+				}
+			}
+
+			if (papi_func_tbl->SetLimitCheckValue != NULL) {
+				vl53l0_dbgmsg("Set RIT - %u\n", ritValue);
+				Status = papi_func_tbl->SetLimitCheckValue(
+				vl53l0_dev,
+				VL53L0_CHECKENABLE_RANGE_IGNORE_THRESHOLD,
+				ritValue);
+				if (Status != VL53L0_ERROR_NONE) {
+					vl53l0_errmsg(
+					"%d- error status %d\n",
+					 __LINE__, Status);
+					return Status;
+				}
+			}
+		}
+		data->reset = 0;
+	}
+
+	/* Setup in single ranging mode */
+
+		pr_err("Call of VL53L0_SetDeviceMode\n");
+	Status = papi_func_tbl->SetDeviceMode(vl53l0_dev,
+					VL53L0_DEVICEMODE_SINGLE_RANGING);
+	if (Status != VL53L0_ERROR_NONE) {
+		vl53l0_errmsg("%d- error status %d\n", __LINE__, Status);
+		return Status;
+	}
+
+
+	Status = papi_func_tbl->SetWrapAroundCheckEnable(vl53l0_dev, 1);
+	if (Status != VL53L0_ERROR_NONE) {
+		vl53l0_errmsg("%d- error status %d\n", __LINE__, Status);
+		return Status;
+	}
+
+
+	vl53l0_dbgmsg("End\n");
+
+	return 0;
+}
+
+
+static int stmvl53l0_config_use_case(struct stmvl53l0_data *data)
+{
+	VL53L0_DEV		vl53l0_dev = data;
+	VL53L0_Error	Status = VL53L0_ERROR_NONE;
+	FixPoint1616_t	signalRateLimit;
+	FixPoint1616_t	sigmaLimit;
+	uint32_t		preRangePulsePeriod;
+	uint32_t		finalRangePulsePeriod;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	switch (vl53l0_dev->useCase) {
+
+	case USE_CASE_LONG_DISTANCE:
+		sigmaLimit			= LONG_DISTANCE_SIGMA_LIMIT;
+		signalRateLimit		= LONG_DISTANCE_SIGNAL_RATE_LIMIT;
+		preRangePulsePeriod	= LONG_DISTANCE_PRE_RANGE_PULSE_PERIOD;
+		finalRangePulsePeriod = LONG_DISTANCE_FINAL_RANGE_PULSE_PERIOD;
+		break;
+
+	case USE_CASE_HIGH_ACCURACY:
+		sigmaLimit		= HIGH_ACCURACY_SIGMA_LIMIT;
+		signalRateLimit	= HIGH_ACCURACY_SIGNAL_RATE_LIMIT;
+		preRangePulsePeriod	= HIGH_ACCURACY_PRE_RANGE_PULSE_PERIOD;
+		finalRangePulsePeriod = HIGH_ACCURACY_FINAL_RANGE_PULSE_PERIOD;
+		break;
+
+	case USE_CASE_HIGH_SPEED:
+		sigmaLimit		= HIGH_SPEED_SIGMA_LIMIT;
+		signalRateLimit	= HIGH_SPEED_SIGNAL_RATE_LIMIT;
+		preRangePulsePeriod	= HIGH_SPEED_PRE_RANGE_PULSE_PERIOD;
+		finalRangePulsePeriod = HIGH_SPEED_FINAL_RANGE_PULSE_PERIOD;
+		break;
+
+	case USE_CASE_CUSTOM:
+		/* Set by application through IOCTL interface */
+		sigmaLimit			= vl53l0_dev->sigmaLimit;
+		signalRateLimit		= vl53l0_dev->signalRateLimit;
+		preRangePulsePeriod = vl53l0_dev->preRangePulsePeriod;
+		finalRangePulsePeriod = vl53l0_dev->finalRangePulsePeriod;
+		break;
+
+	default:
+		vl53l0_errmsg(
+			"Invalid use case = %d\n", vl53l0_dev->useCase);
+		/* Invalid parameter, should not reach here */
+		return -EINVAL;
+	}
+
+	vl53l0_dbgmsg(
+		"Configure UseCase(%d) : Sigma=%u,Signal=%u,Pre=%u,Final=%u,timingBudget=%u\n",
+					vl53l0_dev->useCase,
+					sigmaLimit,
+					signalRateLimit,
+					preRangePulsePeriod,
+					finalRangePulsePeriod,
+					vl53l0_dev->timingBudget);
+
+	if (papi_func_tbl->SetLimitCheckEnable != NULL) {
+		Status = papi_func_tbl->SetLimitCheckEnable(
+			vl53l0_dev,
+			VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE,
+			 1);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = papi_func_tbl->SetLimitCheckEnable(
+			vl53l0_dev,
+			VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+			 1);
+	} else {
+		vl53l0_errmsg(
+		"SetLimitCheckEnable(SIGMA_FINAL_RANGE) failed with errcode = %d\n",
+		 Status);
+	}
+
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = papi_func_tbl->SetLimitCheckValue(
+				vl53l0_dev,
+				VL53L0_CHECKENABLE_SIGNAL_RATE_FINAL_RANGE,
+				signalRateLimit);
+	} else {
+		vl53l0_errmsg(
+			"SetLimitCheckEnable(SIGNAL_RATE_FINAL_RANGE) failed with errcode = %d\n",
+		 Status);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = papi_func_tbl->SetLimitCheckValue(vl53l0_dev,
+					VL53L0_CHECKENABLE_SIGMA_FINAL_RANGE,
+					sigmaLimit);
+	} else {
+		vl53l0_dbgmsg(
+			"SIGNAL_RATE_FINAL_RANGE failed with errcode = %d\n",
+			 Status);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status =
+		papi_func_tbl->SetMeasurementTimingBudgetMicroSeconds(
+				vl53l0_dev,
+				vl53l0_dev->timingBudget);
+	} else {
+		vl53l0_dbgmsg(
+			"SIGMA_FINAL_RANGE failed with errcode = %d\n",
+			 Status);
+	}
+
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = papi_func_tbl->SetVcselPulsePeriod(vl53l0_dev,
+					VL53L0_VCSEL_PERIOD_PRE_RANGE,
+					preRangePulsePeriod);
+	} else {
+		vl53l0_dbgmsg(
+		 "SetMeasurementTimingBudget failed with errcode = %d\n",
+			 Status);
+	}
+
+	if (Status == VL53L0_ERROR_NONE) {
+		Status = papi_func_tbl->SetVcselPulsePeriod(vl53l0_dev,
+			VL53L0_VCSEL_PERIOD_FINAL_RANGE,
+			finalRangePulsePeriod);
+	} else
+		vl53l0_dbgmsg(
+		"SetVcselPulsePeriod(PRE) failed with errcode = %d\n", Status);
+
+
+	if (Status != VL53L0_ERROR_NONE)
+		vl53l0_dbgmsg(
+		"SetVcselPulsePeriod(FINAL)failed with errcode = %d\n", Status);
+
+	vl53l0_dbgmsg("End\n");
+	return Status;
+}
+static int stmvl53l0_start(struct stmvl53l0_data *data, uint8_t scaling,
+	init_mode_e mode)
+{
+	int rc = 0;
+	VL53L0_DEV vl53l0_dev = data;
+	VL53L0_Error Status = VL53L0_ERROR_NONE;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	/* Power up */
+	rc = pmodule_func_tbl->power_up(data->client_object, &data->reset);
+	if (rc) {
+		vl53l0_errmsg("%d,error rc %d\n", __LINE__, rc);
+		return rc;
+	}
+
+	/* init */
+	rc = stmvl53l0_init_client(data);
+	if (rc) {
+		vl53l0_errmsg("%d, error rc %d\n", __LINE__, rc);
+		pmodule_func_tbl->power_down(data->client_object);
+		return -EINVAL;
+	}
+
+	/* check mode */
+	if (mode != NORMAL_MODE)
+		papi_func_tbl->SetXTalkCompensationEnable(vl53l0_dev, 1);
+
+	if (mode == OFFSETCALIB_MODE) {
+		/*VL53L0_SetOffsetCalibrationDataMicroMeter(vl53l0_dev, 0);*/
+		FixPoint1616_t OffsetMicroMeter;
+
+		papi_func_tbl->PerformOffsetCalibration(vl53l0_dev,
+			(data->offsetCalDistance<<16),
+			&OffsetMicroMeter);
+		pr_err("Offset calibration:%u\n", OffsetMicroMeter);
+		vl53l0_dev->OffsetMicroMeter = OffsetMicroMeter;
+		vl53l0_dev->setCalibratedValue |=
+		 SET_OFFSET_CALIB_DATA_MICROMETER_MASK;
+
+		return rc;
+	} else if (mode == XTALKCALIB_MODE) {
+		FixPoint1616_t XTalkCompensationRateMegaCps;
+		/*caltarget distance : 100mm and convert to
+		* fixed point 16 16 format
+		*/
+		papi_func_tbl->PerformXTalkCalibration(vl53l0_dev,
+			(data->xtalkCalDistance<<16),
+			&XTalkCompensationRateMegaCps);
+		pr_err("Xtalk calibration:%u\n",
+			 XTalkCompensationRateMegaCps);
+		vl53l0_dev->XTalkCompensationRateMegaCps =
+				 XTalkCompensationRateMegaCps;
+		vl53l0_dev->setCalibratedValue |=
+			 SET_XTALK_COMP_RATE_MCPS_MASK;
+
+		return rc;
+	}
+	/* set up device parameters */
+	data->gpio_polarity = VL53L0_INTERRUPTPOLARITY_LOW;
+
+	/* Following two calls are made from IOCTL as well */
+	Status = papi_func_tbl->SetGpioConfig(vl53l0_dev, 0, 0,
+		data->gpio_function,
+		VL53L0_INTERRUPTPOLARITY_LOW);
+	if (Status != VL53L0_ERROR_NONE) {
+		vl53l0_errmsg("Failed to SetGpioConfig. Error = %d\n", Status);
+		return -EPERM;
+	}
+
+
+	Status = papi_func_tbl->SetInterruptThresholds(vl53l0_dev, 0,
+		data->low_threshold,
+		 data->high_threshold);
+	if (Status != VL53L0_ERROR_NONE) {
+		vl53l0_errmsg(
+		"Failed to SetInterruptThresholds. Error = %d\n", Status);
+		return -EPERM;
+	}
+
+
+	if (data->deviceMode == VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING) {
+		Status = papi_func_tbl->SetInterMeasurementPeriodMilliSeconds(
+			vl53l0_dev,
+			data->interMeasurems);
+		if (Status != VL53L0_ERROR_NONE) {
+			vl53l0_errmsg(
+			"Failed to SetInterMeasurementPeriodMilliSeconds. Error = %d\n",
+			 Status);
+			return -EPERM;
+		}
+		pr_err(
+			"DeviceMode:0x%x, interMeasurems:%d==\n",
+			data->deviceMode,
+			data->interMeasurems);
+
+
+	}
+
+
+	Status = papi_func_tbl->SetDeviceMode(
+			vl53l0_dev,
+			data->deviceMode);
+	if (Status != VL53L0_ERROR_NONE) {
+		vl53l0_errmsg("Failed to SetDeviceMode. Error = %d\n", Status);
+		return -EPERM;
+	}
+
+	Status = papi_func_tbl->ClearInterruptMask(vl53l0_dev,
+							0);
+	if (Status != VL53L0_ERROR_NONE) {
+		vl53l0_errmsg(
+		"Failed to ClearInterruptMask. Error = %d\n", Status);
+		return -EPERM;
+	}
+
+
+
+	Status = stmvl53l0_config_use_case(vl53l0_dev);
+	if (Status != VL53L0_ERROR_NONE) {
+		vl53l0_errmsg(
+			"Failed to configure Use case = %u\n",
+				vl53l0_dev->useCase);
+		return -EPERM;
+	}
+
+	/* start the ranging */
+	Status = papi_func_tbl->StartMeasurement(vl53l0_dev);
+	if (Status != VL53L0_ERROR_NONE) {
+		vl53l0_errmsg(
+			"Failed to StartMeasurement. Error = %d\n", Status);
+		return -EPERM;
+	}
+
+	data->enable_ps_sensor = 1;
+
+#ifndef USE_INT
+	/* Unblock the thread execution */
+	wake_up(&vl53l0_dev->poll_thread_wq);
+#endif
+
+	vl53l0_dbgmsg("End\n");
+
+	return rc;
+}
+
+static int stmvl53l0_stop(struct stmvl53l0_data *data)
+{
+	int rc = 0;
+	VL53L0_DEV vl53l0_dev = data;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	/* stop - if continuous mode */
+	if (data->deviceMode == VL53L0_DEVICEMODE_CONTINUOUS_RANGING ||
+		data->deviceMode == VL53L0_DEVICEMODE_CONTINUOUS_TIMED_RANGING)
+		papi_func_tbl->StopMeasurement(vl53l0_dev);
+
+	/* clean interrupt */
+	papi_func_tbl->ClearInterruptMask(vl53l0_dev, 0);
+
+	/* cancel work handler */
+	stmvl53l0_cancel_handler(data);
+
+	/* Clear updateUseCase pending operation */
+	data->updateUseCase = 0;
+	/* power down */
+	rc = pmodule_func_tbl->power_down(data->client_object);
+	if (rc) {
+		vl53l0_errmsg("%d, error rc %d\n", __LINE__, rc);
+		return rc;
+	}
+	vl53l0_dbgmsg("End\n");
+
+	return rc;
+}
+static void stmvl53l0_timer_fn(unsigned long data)
+{
+
+	VL53L0_DEV vl53l0_dev = (VL53L0_DEV)data;
+
+	vl53l0_dev->flushCount++;
+
+	input_report_abs(vl53l0_dev->input_dev_ps, ABS_GAS,
+		  vl53l0_dev->flushCount);
+
+
+	input_sync(vl53l0_dev->input_dev_ps);
+
+	vl53l0_dbgmsg("Sensor HAL Flush Count = %u\n", vl53l0_dev->flushCount);
+}
+
+
+
+/*
+ * I2C init/probing/exit functions
+ */
+static const struct file_operations stmvl53l0_ranging_fops = {
+	.owner =			THIS_MODULE,
+	.unlocked_ioctl =	stmvl53l0_ioctl,
+	.open =				stmvl53l0_open,
+	.flush =			stmvl53l0_flush,
+};
+
+
+
+int stmvl53l0_setup(struct stmvl53l0_data *data)
+{
+	int rc = 0;
+
+#ifdef USE_INT
+	int irq = 0;
+#endif
+
+	vl53l0_dbgmsg("Enter\n");
+
+	/* init mutex */
+	mutex_init(&data->update_lock);
+	mutex_init(&data->work_mutex);
+
+#ifdef USE_INT
+	/* init interrupt */
+	gpio_request(IRQ_NUM, "vl53l0_gpio_int");
+	gpio_direction_input(IRQ_NUM);
+	irq = gpio_to_irq(IRQ_NUM);
+	if (irq < 0) {
+		vl53l0_errmsg("filed to map GPIO: %d to interrupt:%d\n",
+			IRQ_NUM, irq);
+	} else {
+		vl53l0_dbgmsg("register_irq:%d\n", irq);
+		/* IRQF_TRIGGER_FALLING- poliarity:0 IRQF_TRIGGER_RISNG -
+		 * poliarty:1
+		 */
+		rc = request_threaded_irq(irq, NULL,
+				stmvl53l0_interrupt_handler,
+				IRQF_TRIGGER_FALLING|IRQF_ONESHOT,
+				"vl53l0_interrupt",
+				(void *)data);
+		if (rc) {
+			vl53l0_errmsg(
+"%d, Could not allocate STMVL53L0_INT ! result:%d\n",  __LINE__, rc);
+			free_irq(irq, data);
+			goto exit_free_irq;
+		}
+	}
+	data->irq = irq;
+	vl53l0_errmsg("interrupt is hooked\n");
+#else
+
+	init_waitqueue_head(&data->poll_thread_wq);
+
+	data->poll_thread = kthread_run(&stmvl53l0_poll_thread,
+							(void *)data,
+							"STM-VL53L0");
+	if (data->poll_thread == NULL) {
+		pr_err(
+	"%s(%d) - Failed to create Polling thread\n", __func__, __LINE__);
+		goto exit_free_irq;
+	}
+#endif
+
+	/* init work handler */
+	INIT_DELAYED_WORK(&data->dwork, stmvl53l0_work_handler);
+
+	/* Register to Input Device */
+	data->input_dev_ps = input_allocate_device();
+	if (!data->input_dev_ps) {
+		rc = -ENOMEM;
+		vl53l0_errmsg("%d error:%d\n", __LINE__, rc);
+		goto exit_free_irq;
+	}
+	set_bit(EV_ABS, data->input_dev_ps->evbit);
+	/* range in cm*/
+	input_set_abs_params(data->input_dev_ps, ABS_DISTANCE, 0, 76, 0, 0);
+	/* tv_sec */
+	input_set_abs_params(data->input_dev_ps, ABS_HAT0X, 0, 0xffffffff,
+		0, 0);
+	/* tv_usec */
+	input_set_abs_params(data->input_dev_ps, ABS_HAT0Y, 0, 0xffffffff,
+		0, 0);
+	/* range in_mm */
+	input_set_abs_params(data->input_dev_ps, ABS_HAT1X, 0, 765, 0, 0);
+	/* error code change maximum to 0xff for more flexibility */
+	input_set_abs_params(data->input_dev_ps, ABS_HAT1Y, 0, 0xff, 0, 0);
+	/* rtnRate */
+	input_set_abs_params(data->input_dev_ps, ABS_HAT2X, 0, 0xffffffff,
+		0, 0);
+	/* rtn_amb_rate */
+	input_set_abs_params(data->input_dev_ps, ABS_HAT2Y, 0, 0xffffffff,
+		0, 0);
+	/* rtn_conv_time */
+	input_set_abs_params(data->input_dev_ps, ABS_HAT3X, 0, 0xffffffff,
+		0, 0);
+	/* dmax */
+	input_set_abs_params(data->input_dev_ps, ABS_HAT3Y, 0, 0xffffffff,
+		0, 0);
+
+	input_set_abs_params(data->input_dev_ps, ABS_PRESSURE, 0, 0xffffffff,
+		0, 0);
+
+	input_set_abs_params(data->input_dev_ps, ABS_WHEEL, 0, 0xffffffff,
+		0, 0);
+
+	input_set_abs_params(data->input_dev_ps, ABS_GAS, 0, 0xffffffff,
+		0, 0);
+	data->input_dev_ps->name = "STM VL53L0 proximity sensor";
+
+	rc = input_register_device(data->input_dev_ps);
+	if (rc) {
+		rc = -ENOMEM;
+		vl53l0_errmsg("%d error:%d\n", __LINE__, rc);
+		goto exit_free_dev_ps;
+	}
+	/* setup drv data */
+	input_set_drvdata(data->input_dev_ps, data);
+
+	/* Register sysfs hooks */
+	data->range_kobj = kobject_create_and_add("range", kernel_kobj);
+	if (!data->range_kobj) {
+		rc = -ENOMEM;
+		vl53l0_errmsg("%d error:%d\n", __LINE__, rc);
+		goto exit_unregister_dev_ps;
+	}
+	rc = sysfs_create_group(&data->input_dev_ps->dev.kobj,
+			&stmvl53l0_attr_group);
+	if (rc) {
+		rc = -ENOMEM;
+		vl53l0_errmsg("%d error:%d\n", __LINE__, rc);
+		goto exit_unregister_dev_ps_1;
+	}
+
+	setup_timer(&data->timer,
+				 stmvl53l0_timer_fn,
+				(unsigned long)data);
+
+	/* to register as a misc device */
+	data->miscdev.minor = MISC_DYNAMIC_MINOR;
+	data->miscdev.name = "stmvl53l0_ranging";
+	data->miscdev.fops = &stmvl53l0_ranging_fops;
+	vl53l0_errmsg("Misc device registration name:%s\n", data->dev_name);
+	if (misc_register(&data->miscdev) != 0)
+		vl53l0_errmsg(
+"Could not register misc. dev for stmvl53l0	ranging\n");
+
+	/* init default device parameter value */
+	data->enable_ps_sensor = 0;
+	data->reset = 1;
+	data->delay_ms = 30;	/* delay time to 30ms */
+	data->enableDebug = 0;
+	data->gpio_polarity = VL53L0_INTERRUPTPOLARITY_LOW;
+	data->gpio_function = VL53L0_GPIOFUNCTIONALITY_NEW_MEASURE_READY;
+	data->low_threshold = 60;
+	data->high_threshold = 200;
+	data->deviceMode = VL53L0_DEVICEMODE_SINGLE_RANGING;
+	data->interMeasurems = 30;
+	data->useCase = USE_CASE_LONG_DISTANCE;
+	data->timingBudget = LONG_DISTANCE_TIMING_BUDGET;
+
+	/* Set default values used in Custom Mode Use Case */
+	data->signalRateLimit = LONG_DISTANCE_SIGNAL_RATE_LIMIT;
+	data->sigmaLimit = LONG_DISTANCE_SIGMA_LIMIT;
+	data->preRangePulsePeriod = LONG_DISTANCE_PRE_RANGE_PULSE_PERIOD;
+	data->finalRangePulsePeriod = LONG_DISTANCE_FINAL_RANGE_PULSE_PERIOD;
+
+
+
+
+	vl53l0_dbgmsg("support ver. %s enabled\n", DRIVER_VERSION);
+	vl53l0_dbgmsg("End");
+
+	return 0;
+exit_unregister_dev_ps_1:
+	kobject_put(data->range_kobj);
+exit_unregister_dev_ps:
+	input_unregister_device(data->input_dev_ps);
+exit_free_dev_ps:
+	input_free_device(data->input_dev_ps);
+exit_free_irq:
+#ifdef USE_INT
+	free_irq(irq, data);
+#endif
+	kfree(data);
+	return rc;
+}
+
+void stmvl53l0_cleanup(struct stmvl53l0_data *data)
+{
+#ifndef USE_INT
+	pr_err("%s(%d) : Stop poll_thread\n", __func__, __LINE__);
+	poll_thread_exit = 1;
+	kthread_stop(data->poll_thread);
+#endif
+}
+static int __init stmvl53l0_init(void)
+{
+	int ret = -1;
+
+	vl53l0_dbgmsg("Enter\n");
+
+	/* assign function table */
+	pmodule_func_tbl = &stmvl53l0_module_func_tbl;
+	papi_func_tbl = &stmvl53l0_api_func_tbl;
+
+	/* client specific init function */
+	ret = pmodule_func_tbl->init();
+
+	if (ret)
+		vl53l0_errmsg("%d failed with %d\n", __LINE__, ret);
+
+	vl53l0_dbgmsg("End\n");
+
+	return ret;
+}
+
+static void __exit stmvl53l0_exit(void)
+{
+	vl53l0_dbgmsg("Enter\n");
+
+	vl53l0_dbgmsg("End\n");
+}
+
+
+MODULE_AUTHOR("STMicroelectronics Imaging Division");
+MODULE_DESCRIPTION("ST FlightSense Time-of-Flight sensor driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRIVER_VERSION);
+
+module_init(stmvl53l0_init);
+module_exit(stmvl53l0_exit);
+