diff options
| author | Fenglin Wu <fenglinw@codeaurora.org> | 2016-07-19 13:25:15 +0800 |
|---|---|---|
| committer | Fenglin Wu <fenglinw@codeaurora.org> | 2016-08-30 15:03:39 +0800 |
| commit | f090e5b7cc97f484370762328f56fa28595b2d14 (patch) | |
| tree | 85662636024a232544e405c828d6194e1481049e /drivers/pinctrl | |
| parent | cc54c7c347c3be9d3bd5bd1412bcb7f228e6af08 (diff) | |
pinctrl: qcom: spmi-mpp: Set drive-strength for sink function
Write drive-strength setting into SINK_CTL register to make sink
function work.
Change-Id: I0b6e273b846a8e07c5b36d03a20edddfd895e9c0
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/qcom/pinctrl-spmi-mpp.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c index 89808435c528..93e6f5093985 100644 --- a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c +++ b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012-2014, The Linux Foundation. All rights reserved. + * Copyright (c) 2012-2014, 2016, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -88,6 +88,10 @@ #define PMIC_MPP_REG_AIN_ROUTE_SHIFT 0 #define PMIC_MPP_REG_AIN_ROUTE_MASK 0x7 +/* PMIC_MPP_REG_SINK_CTL */ +#define PMIC_MPP_REG_CURRENT_SINK_MASK 0x7 +#define MPP_CURRENT_SINK_MA_STEP_SIZE 5 + #define PMIC_MPP_MODE_DIGITAL_INPUT 0 #define PMIC_MPP_MODE_DIGITAL_OUTPUT 1 #define PMIC_MPP_MODE_DIGITAL_BIDIR 2 @@ -458,7 +462,7 @@ static int pmic_mpp_config_set(struct pinctrl_dev *pctldev, unsigned int pin, pad->dtest = arg; break; case PIN_CONFIG_DRIVE_STRENGTH: - arg = pad->drive_strength; + pad->drive_strength = arg; break; case PMIC_MPP_CONF_AMUX_ROUTE: if (arg >= PMIC_MPP_AMUX_ROUTE_ABUS4) @@ -498,6 +502,16 @@ static int pmic_mpp_config_set(struct pinctrl_dev *pctldev, unsigned int pin, if (ret < 0) return ret; + val = 0; + if (pad->drive_strength >= MPP_CURRENT_SINK_MA_STEP_SIZE) + val = DIV_ROUND_UP(pad->drive_strength, + MPP_CURRENT_SINK_MA_STEP_SIZE) - 1; + + val &= PMIC_MPP_REG_CURRENT_SINK_MASK; + ret = pmic_mpp_write(state, pad, PMIC_MPP_REG_SINK_CTL, val); + if (ret < 0) + return ret; + ret = pmic_mpp_write_mode_ctl(state, pad); if (ret < 0) return ret; @@ -771,7 +785,8 @@ static int pmic_mpp_populate(struct pmic_mpp_state *state, if (val < 0) return val; - pad->drive_strength = val; + val &= PMIC_MPP_REG_CURRENT_SINK_MASK; + pad->drive_strength = (val + 1) * MPP_CURRENT_SINK_MA_STEP_SIZE; val = pmic_mpp_read(state, pad, PMIC_MPP_REG_AOUT_CTL); if (val < 0) |