iio: imu: st_lsm6dsx: add support to ISM330IS

Add support to STM ISM330IS (accelerometer and gyroscope) Mems sensor.
The ISM330IS sensor can use LSM6DSO16IS as fallback device since it
implements all the ISM330IS features currently implemented in
st_lsm6dsx.

Datasheet: https://www.st.com/resource/en/datasheet/ism330is.pdfSigned-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/4cd1614060e06f49cd92f5930d8fd40117c07920.1669279604.git.lorenzo@kernel.orgSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/imu/st_lsm6dsx/Kconfig

@@ -13,8 +13,8 @@ config IIO_ST_LSM6DSX
 	  sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm,
 	  ism330dlc, lsm6dso, lsm6dsox, asm330lhh, asm330lhhx, lsm6dsr,
 	  lsm6ds3tr-c, ism330dhcx, lsm6dsrx, lsm6ds0, lsm6dsop, lsm6dstx,
-	  lsm6dsv, lsm6dsv16x, lsm6dso16is, the accelerometer/gyroscope
-	  of lsm9ds1 and lsm6dst.
+	  lsm6dsv, lsm6dsv16x, lsm6dso16is, ism330is, lsm6dst and the
+	  accelerometer/gyroscope of lsm9ds1.
 
 	  To compile this driver as a module, choose M here: the module
 	  will be called st_lsm6dsx.

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h

@@ -36,6 +36,7 @@
 #define ST_LSM6DSV_DEV_NAME	"lsm6dsv"
 #define ST_LSM6DSV16X_DEV_NAME	"lsm6dsv16x"
 #define ST_LSM6DSO16IS_DEV_NAME	"lsm6dso16is"
+#define ST_ISM330IS_DEV_NAME	"ism330is"
 
 enum st_lsm6dsx_hw_id {
 	ST_LSM6DS3_ID,
@@ -59,6 +60,7 @@ enum st_lsm6dsx_hw_id {
 	ST_LSM6DSV_ID,
 	ST_LSM6DSV16X_ID,
 	ST_LSM6DSO16IS_ID,
+	ST_ISM330IS_ID,
 	ST_LSM6DSX_MAX_ID,
 };
 

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c

@@ -27,7 +27,7 @@
  *   - FIFO size: 4KB
  *
  * - LSM6DSO/LSM6DSOX/ASM330LHH/ASM330LHHX/LSM6DSR/ISM330DHCX/LSM6DST/LSM6DSOP/
- *   LSM6DSTX/LSM6DSO16IS:
+ *   LSM6DSTX/LSM6DSO16IS/ISM330IS:
  *   - Accelerometer/Gyroscope supported ODR [Hz]: 12.5, 26, 52, 104, 208, 416,
  *     833
  *   - Accelerometer supported full-scale [g]: +-2/+-4/+-8/+-16
@@ -1393,7 +1393,11 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.hw_id = ST_LSM6DSO16IS_ID,
 				.name = ST_LSM6DSO16IS_DEV_NAME,
 				.wai = 0x22,
-			},
+			}, {
+				.hw_id = ST_ISM330IS_ID,
+				.name = ST_ISM330IS_DEV_NAME,
+				.wai = 0x22,
+			}
 		},
 		.channels = {
 			[ST_LSM6DSX_ID_ACC] = {

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c

@@ -121,6 +121,10 @@ static const struct of_device_id st_lsm6dsx_i2c_of_match[] = {
 		.compatible = "st,lsm6dso16is",
 		.data = (void *)ST_LSM6DSO16IS_ID,
 	},
+	{
+		.compatible = "st,ism330is",
+		.data = (void *)ST_ISM330IS_ID,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_lsm6dsx_i2c_of_match);
@@ -147,6 +151,7 @@ static const struct i2c_device_id st_lsm6dsx_i2c_id_table[] = {
 	{ ST_LSM6DSV_DEV_NAME, ST_LSM6DSV_ID },
 	{ ST_LSM6DSV16X_DEV_NAME, ST_LSM6DSV16X_ID },
 	{ ST_LSM6DSO16IS_DEV_NAME, ST_LSM6DSO16IS_ID },
+	{ ST_ISM330IS_DEV_NAME, ST_ISM330IS_ID },
 	{},
 };
 MODULE_DEVICE_TABLE(i2c, st_lsm6dsx_i2c_id_table);

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c

@@ -121,6 +121,10 @@ static const struct of_device_id st_lsm6dsx_spi_of_match[] = {
 		.compatible = "st,lsm6dso16is",
 		.data = (void *)ST_LSM6DSO16IS_ID,
 	},
+	{
+		.compatible = "st,ism330is",
+		.data = (void *)ST_ISM330IS_ID,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match);
@@ -147,6 +151,7 @@ static const struct spi_device_id st_lsm6dsx_spi_id_table[] = {
 	{ ST_LSM6DSV_DEV_NAME, ST_LSM6DSV_ID },
 	{ ST_LSM6DSV16X_DEV_NAME, ST_LSM6DSV16X_ID },
 	{ ST_LSM6DSO16IS_DEV_NAME, ST_LSM6DSO16IS_ID },
+	{ ST_ISM330IS_DEV_NAME, ST_ISM330IS_ID },
 	{},
 };
 MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table);