iio: accel: st_sensors: add support for LIS2HH12

Add support for STMicroelectronics LISHH12 accelerometer in st_accel
framework.

https://www.st.com/resource/en/datasheet/lis2hh12.pdf

Signed-off-by: Gaëtan André <rvlander@gaetanandre.eu>
Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/accel/Kconfig

@@ -238,7 +238,7 @@ config IIO_ST_ACCEL_3AXIS
 	  Say yes here to build support for STMicroelectronics accelerometers:
 	  LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC,
 	  LIS331DLH, LSM303DL, LSM303DLM, LSM330, LIS2DH12, H3LIS331DL,
-	  LNG2DM, LIS3DE, LIS2DE12
+	  LNG2DM, LIS3DE, LIS2DE12, LIS2HH12
 
 	  This driver can also be built as a module. If so, these modules
 	  will be created:

drivers/iio/accel/st_accel.h

@@ -35,6 +35,7 @@ enum st_accel_type {
 	LIS2DW12,
 	LIS3DHH,
 	LIS2DE12,
+	LIS2HH12,
 	ST_ACCEL_MAX,
 };
 
@@ -59,6 +60,7 @@ enum st_accel_type {
 #define LIS3DHH_ACCEL_DEV_NAME		"lis3dhh"
 #define LIS3DE_ACCEL_DEV_NAME		"lis3de"
 #define LIS2DE12_ACCEL_DEV_NAME		"lis2de12"
+#define LIS2HH12_ACCEL_DEV_NAME		"lis2hh12"
 
 /**
 * struct st_sensors_platform_data - default accel platform data

drivers/iio/accel/st_accel_core.c

@@ -904,6 +904,83 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
 		.multi_read_bit = true,
 		.bootime = 2,
 	},
+	{
+		.wai = 0x41,
+		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+		.sensors_supported = {
+			[0] = LIS2HH12_ACCEL_DEV_NAME,
+		},
+		.ch = (struct iio_chan_spec *)st_accel_16bit_channels,
+		.odr = {
+			.addr = 0x20,
+			.mask = 0x70,
+			.odr_avl = {
+				{ .hz = 10, .value = 0x01, },
+				{ .hz = 50, .value = 0x02, },
+				{ .hz = 100, .value = 0x03, },
+				{ .hz = 200, .value = 0x04, },
+				{ .hz = 400, .value = 0x05, },
+				{ .hz = 800, .value = 0x06, },
+			},
+		},
+		.pw = {
+			.addr = 0x20,
+			.mask = 0x70,
+			.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+		},
+		.enable_axis = {
+			.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
+			.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
+		},
+		.fs = {
+			.addr = 0x23,
+			.mask = 0x30,
+			.fs_avl = {
+				[0] = {
+					.num = ST_ACCEL_FS_AVL_2G,
+					.value = 0x00,
+					.gain = IIO_G_TO_M_S_2(61),
+				},
+				[1] = {
+					.num = ST_ACCEL_FS_AVL_4G,
+					.value = 0x02,
+					.gain = IIO_G_TO_M_S_2(122),
+				},
+				[2] = {
+					.num = ST_ACCEL_FS_AVL_8G,
+					.value = 0x03,
+					.gain = IIO_G_TO_M_S_2(244),
+				},
+			},
+		},
+		.bdu = {
+			.addr = 0x20,
+			.mask = 0x08,
+		},
+		.drdy_irq = {
+			.int1 = {
+				.addr = 0x22,
+				.mask = 0x01,
+			},
+			.int2 = {
+				.addr = 0x25,
+				.mask = 0x01,
+			},
+			.addr_ihl = 0x24,
+			.mask_ihl = 0x02,
+			.stat_drdy = {
+				.addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+				.mask = 0x07,
+			},
+		},
+		.sim = {
+			.addr = 0x23,
+			.value = BIT(0),
+		},
+		.multi_read_bit = true,
+		.bootime = 2,
+	},
+
 };
 
 static int st_accel_read_raw(struct iio_dev *indio_dev,

drivers/iio/accel/st_accel_i2c.c

@@ -104,6 +104,10 @@ static const struct of_device_id st_accel_of_match[] = {
 		.compatible = "st,lis2de12",
 		.data = LIS2DE12_ACCEL_DEV_NAME,
 	},
+	{
+		.compatible = "st,lis2hh12",
+		.data = LIS2HH12_ACCEL_DEV_NAME,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_accel_of_match);
@@ -138,6 +142,7 @@ static const struct i2c_device_id st_accel_id_table[] = {
 	{ LIS2DW12_ACCEL_DEV_NAME },
 	{ LIS3DE_ACCEL_DEV_NAME },
 	{ LIS2DE12_ACCEL_DEV_NAME },
+	{ LIS2HH12_ACCEL_DEV_NAME },
 	{},
 };
 MODULE_DEVICE_TABLE(i2c, st_accel_id_table);