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authorVianney le Clément de Saint-Marcq <vianney.leclement@essensium.com>2015-03-24 16:54:14 +0100
committerJonathan Cameron <jic23@kernel.org>2015-03-29 16:17:11 +0100
commit209c00691938c4b3d58142b05ca6f50b8971e521 (patch)
treeca271dca9ca121cef59c823f0f9f6d0c3ba0c53c /drivers/iio
parent3bbec9773389112330954a6a64422eaa78d546c1 (diff)
iio: mlx90614: Add symbols for accessible registers
Add symbols for all accessible RAM and EEPROM registers, as well as the sleep command and timings defined in the datasheet. Signed-off-by: Vianney le Clément de Saint-Marcq <vianney.leclement@essensium.com> Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
-rw-r--r--drivers/iio/temperature/mlx90614.c26
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/iio/temperature/mlx90614.c b/drivers/iio/temperature/mlx90614.c
index e2c6f1a0d27f..a2e3aa6aa39d 100644
--- a/drivers/iio/temperature/mlx90614.c
+++ b/drivers/iio/temperature/mlx90614.c
@@ -20,11 +20,35 @@
#include <linux/iio/iio.h>
-#define MLX90614_OP_RAM 0x00
+#define MLX90614_OP_RAM 0x00
+#define MLX90614_OP_EEPROM 0x20
+#define MLX90614_OP_SLEEP 0xff
/* RAM offsets with 16-bit data, MSB first */
+#define MLX90614_RAW1 (MLX90614_OP_RAM | 0x04) /* raw data IR channel 1 */
+#define MLX90614_RAW2 (MLX90614_OP_RAM | 0x05) /* raw data IR channel 2 */
#define MLX90614_TA (MLX90614_OP_RAM | 0x06) /* ambient temperature */
#define MLX90614_TOBJ1 (MLX90614_OP_RAM | 0x07) /* object 1 temperature */
+#define MLX90614_TOBJ2 (MLX90614_OP_RAM | 0x08) /* object 2 temperature */
+
+/* EEPROM offsets with 16-bit data, MSB first */
+#define MLX90614_EMISSIVITY (MLX90614_OP_EEPROM | 0x04) /* emissivity correction coefficient */
+#define MLX90614_CONFIG (MLX90614_OP_EEPROM | 0x05) /* configuration register */
+
+/* Control bits in configuration register */
+#define MLX90614_CONFIG_IIR_SHIFT 0 /* IIR coefficient */
+#define MLX90614_CONFIG_IIR_MASK (0x7 << MLX90614_CONFIG_IIR_SHIFT)
+#define MLX90614_CONFIG_DUAL_SHIFT 6 /* single (0) or dual (1) IR sensor */
+#define MLX90614_CONFIG_DUAL_MASK (1 << MLX90614_CONFIG_DUAL_SHIFT)
+#define MLX90614_CONFIG_FIR_SHIFT 8 /* FIR coefficient */
+#define MLX90614_CONFIG_FIR_MASK (0x7 << MLX90614_CONFIG_FIR_SHIFT)
+#define MLX90614_CONFIG_GAIN_SHIFT 11 /* gain */
+#define MLX90614_CONFIG_GAIN_MASK (0x7 << MLX90614_CONFIG_GAIN_SHIFT)
+
+/* Timings (in ms) */
+#define MLX90614_TIMING_EEPROM 20 /* time for EEPROM write/erase to complete */
+#define MLX90614_TIMING_WAKEUP 34 /* time to hold SDA low for wake-up */
+#define MLX90614_TIMING_STARTUP 250 /* time before first data after wake-up */
struct mlx90614_data {
struct i2c_client *client;