From: Giuseppe Barba <[email protected]>

This commit add support for STMicroelectronics lis2dh12 accelerometer.
Datasheet for this device can be found here:

http://www.st.com/st-web-ui/static/active/en/resource/technical/
document/datasheet/DM00091513.pdf

Upstream-Status: 
Backport[https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34dc578d99449a83dcb0f5ef4444215590183af4]

Signed-off-by: Giuseppe Barba <[email protected]>
Acked-by: Denis Ciocca <[email protected]>
Acked-by: Daniel Baluta <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>
Signed-off-by: Yong Li <[email protected]>
---
 Documentation/devicetree/bindings/iio/st-sensors.txt | 1 +
 drivers/iio/accel/Kconfig                            | 2 +-
 drivers/iio/accel/st_accel.h                         | 1 +
 drivers/iio/accel/st_accel_core.c                    | 1 +
 drivers/iio/accel/st_accel_i2c.c                     | 5 +++++
 drivers/iio/accel/st_accel_spi.c                     | 1 +
 6 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/iio/st-sensors.txt 
b/Documentation/devicetree/bindings/iio/st-sensors.txt
index d3ccdb1..d4b87cc 100644
--- a/Documentation/devicetree/bindings/iio/st-sensors.txt
+++ b/Documentation/devicetree/bindings/iio/st-sensors.txt
@@ -36,6 +36,7 @@ Accelerometers:
 - st,lsm303dlm-accel
 - st,lsm330-accel
 - st,lsm303agr-accel
+- st,lis2dh12-accel
 
 Gyroscopes:
 - st,l3g4200d-gyro
diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 1f0ca53..0ba5e51 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -64,7 +64,7 @@ config IIO_ST_ACCEL_3AXIS
        help
          Say yes here to build support for STMicroelectronics accelerometers:
          LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC,
-         LIS331DLH, LSM303DL, LSM303DLM, LSM330.
+         LIS331DLH, LSM303DL, LSM303DLM, LSM330, LIS2DH12.
 
          This driver can also be built as a module. If so, these modules
          will be created:
diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h
index 468f21f..5d4a189 100644
--- a/drivers/iio/accel/st_accel.h
+++ b/drivers/iio/accel/st_accel.h
@@ -27,6 +27,7 @@
 #define LSM303DLM_ACCEL_DEV_NAME       "lsm303dlm_accel"
 #define LSM330_ACCEL_DEV_NAME          "lsm330_accel"
 #define LSM303AGR_ACCEL_DEV_NAME       "lsm303agr_accel"
+#define LIS2DH12_ACCEL_DEV_NAME                "lis2dh12_accel"
 
 /**
 * struct st_sensors_platform_data - default accel platform data
diff --git a/drivers/iio/accel/st_accel_core.c 
b/drivers/iio/accel/st_accel_core.c
index 197a08b..70f0427 100644
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -232,6 +232,7 @@ static const struct st_sensor_settings 
st_accel_sensors_settings[] = {
                        [3] = LSM330DL_ACCEL_DEV_NAME,
                        [4] = LSM330DLC_ACCEL_DEV_NAME,
                        [5] = LSM303AGR_ACCEL_DEV_NAME,
+                       [6] = LIS2DH12_ACCEL_DEV_NAME,
                },
                .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
                .odr = {
diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c
index 8b9cc84..294a32f 100644
--- a/drivers/iio/accel/st_accel_i2c.c
+++ b/drivers/iio/accel/st_accel_i2c.c
@@ -72,6 +72,10 @@ static const struct of_device_id st_accel_of_match[] = {
                .compatible = "st,lsm303agr-accel",
                .data = LSM303AGR_ACCEL_DEV_NAME,
        },
+       {
+               .compatible = "st,lis2dh12-accel",
+               .data = LIS2DH12_ACCEL_DEV_NAME,
+       },
        {},
 };
 MODULE_DEVICE_TABLE(of, st_accel_of_match);
@@ -121,6 +125,7 @@ static const struct i2c_device_id st_accel_id_table[] = {
        { LSM303DLM_ACCEL_DEV_NAME },
        { LSM330_ACCEL_DEV_NAME },
        { LSM303AGR_ACCEL_DEV_NAME },
+       { LIS2DH12_ACCEL_DEV_NAME },
        {},
 };
 MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c
index f71b0d3..fcd5847 100644
--- a/drivers/iio/accel/st_accel_spi.c
+++ b/drivers/iio/accel/st_accel_spi.c
@@ -58,6 +58,7 @@ static const struct spi_device_id st_accel_id_table[] = {
        { LSM303DLM_ACCEL_DEV_NAME },
        { LSM330_ACCEL_DEV_NAME },
        { LSM303AGR_ACCEL_DEV_NAME },
+       { LIS2DH12_ACCEL_DEV_NAME },
        {},
 };
 MODULE_DEVICE_TABLE(spi, st_accel_id_table);
-- 
2.7.4

-- 
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