diff mbox series

[v2] iio: accel: st_accel: add LIS2DS12

Message ID 20240601183233.118397-1-kauschluss@disroot.org (mailing list archive)
State Changes Requested
Headers show
Series [v2] iio: accel: st_accel: add LIS2DS12 | expand

Commit Message

Kaustabh Chakraborty June 1, 2024, 6:19 p.m. UTC 
The LIS2DS12 accelerometer by STMicroelectronics is mostly compatible
with the LIS2DE12 variant, except the WhoAmI value (0x43).

Define sensor settings for LIS2DS12, and add support in the I2C and
SPI drivers.

Datasheet: https://www.st.com/resource/en/datasheet/lis2ds12.pdf

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
---
Changes in v2:
- add SPI support
- link datasheet in commit description

v1: https://lore.kernel.org/linux-iio/20240526083302.87172-1-kauschluss@disroot.org/
---
 drivers/iio/accel/st_accel.h      |  1 +
 drivers/iio/accel/st_accel_core.c | 77 +++++++++++++++++++++++++++++++
 drivers/iio/accel/st_accel_i2c.c  |  5 ++
 drivers/iio/accel/st_accel_spi.c  |  5 ++
 4 files changed, 88 insertions(+)
diff mbox series

Patch

diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h
index e7525615712b..2659f536cef6 100644
--- a/drivers/iio/accel/st_accel.h
+++ b/drivers/iio/accel/st_accel.h
@@ -35,6 +35,7 @@ 
 #define LIS3DHH_ACCEL_DEV_NAME		"lis3dhh"
 #define LIS3DE_ACCEL_DEV_NAME		"lis3de"
 #define LIS2DE12_ACCEL_DEV_NAME		"lis2de12"
+#define LIS2DS12_ACCEL_DEV_NAME		"lis2ds12"
 #define LIS2HH12_ACCEL_DEV_NAME		"lis2hh12"
 #define LIS302DL_ACCEL_DEV_NAME		"lis302dl"
 #define LSM303C_ACCEL_DEV_NAME		"lsm303c_accel"
diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index d2104e14e255..08356a90d48b 100644
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -925,6 +925,83 @@  static const struct st_sensor_settings st_accel_sensors_settings[] = {
 		.multi_read_bit = true,
 		.bootime = 2,
 	},
+	{
+		.wai = 0x43,
+		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+		.sensors_supported = {
+			[0] = LIS2DS12_ACCEL_DEV_NAME,
+		},
+		.ch = (struct iio_chan_spec *)st_accel_8bit_channels,
+		.odr = {
+			.addr = 0x20,
+			.mask = 0xf0,
+			.odr_avl = {
+				{ .hz = 1, .value = 0x01, },
+				{ .hz = 10, .value = 0x02, },
+				{ .hz = 25, .value = 0x03, },
+				{ .hz = 50, .value = 0x04, },
+				{ .hz = 100, .value = 0x05, },
+				{ .hz = 200, .value = 0x06, },
+				{ .hz = 400, .value = 0x07, },
+				{ .hz = 1620, .value = 0x08, },
+				{ .hz = 5376, .value = 0x09, },
+			},
+		},
+		.pw = {
+			.addr = 0x20,
+			.mask = 0xf0,
+			.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(15600),
+				},
+				[1] = {
+					.num = ST_ACCEL_FS_AVL_4G,
+					.value = 0x01,
+					.gain = IIO_G_TO_M_S_2(31200),
+				},
+				[2] = {
+					.num = ST_ACCEL_FS_AVL_8G,
+					.value = 0x02,
+					.gain = IIO_G_TO_M_S_2(62500),
+				},
+				[3] = {
+					.num = ST_ACCEL_FS_AVL_16G,
+					.value = 0x03,
+					.gain = IIO_G_TO_M_S_2(187500),
+				},
+			},
+		},
+		.drdy_irq = {
+			.int1 = {
+				.addr = 0x22,
+				.mask = 0x10,
+			},
+			.addr_ihl = 0x25,
+			.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,
+	},
+
 	{
 		.wai = 0x41,
 		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c
index fd3749871121..329a4d6fb2ec 100644
--- a/drivers/iio/accel/st_accel_i2c.c
+++ b/drivers/iio/accel/st_accel_i2c.c
@@ -102,6 +102,10 @@  static const struct of_device_id st_accel_of_match[] = {
 		.compatible = "st,lis2de12",
 		.data = LIS2DE12_ACCEL_DEV_NAME,
 	},
+	{
+		.compatible = "st,lis2ds12",
+		.data = LIS2DS12_ACCEL_DEV_NAME,
+	},
 	{
 		.compatible = "st,lis2hh12",
 		.data = LIS2HH12_ACCEL_DEV_NAME,
@@ -154,6 +158,7 @@  static const struct i2c_device_id st_accel_id_table[] = {
 	{ LIS2DW12_ACCEL_DEV_NAME },
 	{ LIS3DE_ACCEL_DEV_NAME },
 	{ LIS2DE12_ACCEL_DEV_NAME },
+	{ LIS2DS12_ACCEL_DEV_NAME },
 	{ LIS2HH12_ACCEL_DEV_NAME },
 	{ LIS302DL_ACCEL_DEV_NAME },
 	{ LSM303C_ACCEL_DEV_NAME },
diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c
index f72a24f45322..eadeb22c6ef7 100644
--- a/drivers/iio/accel/st_accel_spi.c
+++ b/drivers/iio/accel/st_accel_spi.c
@@ -60,6 +60,10 @@  static const struct of_device_id st_accel_of_match[] = {
 		.compatible = "st,lsm303agr-accel",
 		.data = LSM303AGR_ACCEL_DEV_NAME,
 	},
+	{
+		.compatible = "st,lis2ds12",
+		.data = LIS2DS12_ACCEL_DEV_NAME,
+	},
 	{
 		.compatible = "st,lis2dh12-accel",
 		.data = LIS2DH12_ACCEL_DEV_NAME,
@@ -150,6 +154,7 @@  static const struct spi_device_id st_accel_id_table[] = {
 	{ LIS331DLH_ACCEL_DEV_NAME },
 	{ LSM330_ACCEL_DEV_NAME },
 	{ LSM303AGR_ACCEL_DEV_NAME },
+	{ LIS2DS12_ACCEL_DEV_NAME },
 	{ LIS2DH12_ACCEL_DEV_NAME },
 	{ LIS3L02DQ_ACCEL_DEV_NAME },
 	{ LNG2DM_ACCEL_DEV_NAME },