iio: imu: st_lsm6dsx: move register definitions to sensor_settings struct

Move some register definitions to the per-device array of struct
st_lsm6dsx_sensor_settings in order to simplify adding new sensor
devices to the driver.

Also, remove completely unused register definitions.
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h

@@ -203,6 +203,9 @@ struct st_lsm6dsx_ext_dev_settings {
 /**
  * struct st_lsm6dsx_settings - ST IMU sensor settings
  * @wai: Sensor WhoAmI default value.
+ * @int1_addr: Control Register address for INT1
+ * @int2_addr: Control Register address for INT2
+ * @reset_addr: register address for reset/reboot
  * @max_fifo_size: Sensor max fifo length in FIFO words.
  * @id: List of hw id/device name supported by the driver configuration.
  * @channels: IIO channels supported by the device.
@@ -216,6 +219,9 @@ struct st_lsm6dsx_ext_dev_settings {
  */
 struct st_lsm6dsx_settings {
 	u8 wai;
+	u8 int1_addr;
+	u8 int2_addr;
+	u8 reset_addr;
 	u16 max_fifo_size;
 	struct {
 		enum st_lsm6dsx_hw_id hw_id;

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c

@@ -49,17 +49,12 @@
 
 #include "st_lsm6dsx.h"
 
-#define ST_LSM6DSX_REG_INT1_ADDR		0x0d
-#define ST_LSM6DSX_REG_INT2_ADDR		0x0e
 #define ST_LSM6DSX_REG_FIFO_FTH_IRQ_MASK	BIT(3)
 #define ST_LSM6DSX_REG_WHOAMI_ADDR		0x0f
-#define ST_LSM6DSX_REG_RESET_ADDR		0x12
 #define ST_LSM6DSX_REG_RESET_MASK		BIT(0)
 #define ST_LSM6DSX_REG_BOOT_MASK		BIT(7)
 #define ST_LSM6DSX_REG_BDU_ADDR			0x12
 #define ST_LSM6DSX_REG_BDU_MASK			BIT(6)
-#define ST_LSM6DSX_REG_INT2_ON_INT1_ADDR	0x13
-#define ST_LSM6DSX_REG_INT2_ON_INT1_MASK	BIT(5)
 
 static const struct iio_chan_spec st_lsm6dsx_acc_channels[] = {
 	ST_LSM6DSX_CHANNEL(IIO_ACCEL, 0x28, IIO_MOD_X, 0),
@@ -78,6 +73,9 @@ static const struct iio_chan_spec st_lsm6dsx_gyro_channels[] = {
 static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	{
 		.wai = 0x69,
+		.int1_addr = 0x0d,
+		.int2_addr = 0x0e,
+		.reset_addr = 0x12,
 		.max_fifo_size = 1365,
 		.id = {
 			{
@@ -187,6 +185,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	},
 	{
 		.wai = 0x69,
+		.int1_addr = 0x0d,
+		.int2_addr = 0x0e,
+		.reset_addr = 0x12,
 		.max_fifo_size = 682,
 		.id = {
 			{
@@ -296,6 +297,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	},
 	{
 		.wai = 0x6a,
+		.int1_addr = 0x0d,
+		.int2_addr = 0x0e,
+		.reset_addr = 0x12,
 		.max_fifo_size = 682,
 		.id = {
 			{
@@ -414,6 +418,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	},
 	{
 		.wai = 0x6c,
+		.int1_addr = 0x0d,
+		.int2_addr = 0x0e,
+		.reset_addr = 0x12,
 		.max_fifo_size = 512,
 		.id = {
 			{
@@ -544,6 +551,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	},
 	{
 		.wai = 0x6b,
+		.int1_addr = 0x0d,
+		.int2_addr = 0x0e,
+		.reset_addr = 0x12,
 		.max_fifo_size = 512,
 		.id = {
 			{
@@ -645,6 +655,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	},
 	{
 		.wai = 0x6b,
+		.int1_addr = 0x0d,
+		.int2_addr = 0x0e,
+		.reset_addr = 0x12,
 		.max_fifo_size = 512,
 		.id = {
 			{
@@ -1172,10 +1185,10 @@ static int st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw, u8 *drdy_reg)
 
 	switch (drdy_pin) {
 	case 1:
-		*drdy_reg = ST_LSM6DSX_REG_INT1_ADDR;
+		*drdy_reg = hw->settings->int1_addr;
 		break;
 	case 2:
-		*drdy_reg = ST_LSM6DSX_REG_INT2_ADDR;
+		*drdy_reg = hw->settings->int2_addr;
 		break;
 	default:
 		dev_err(hw->dev, "unsupported data ready pin\n");
@@ -1275,7 +1288,7 @@ static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw)
 	int err;
 
 	/* device sw reset */
-	err = regmap_update_bits(hw->regmap, ST_LSM6DSX_REG_RESET_ADDR,
+	err = regmap_update_bits(hw->regmap, hw->settings->reset_addr,
 				 ST_LSM6DSX_REG_RESET_MASK,
 				 FIELD_PREP(ST_LSM6DSX_REG_RESET_MASK, 1));
 	if (err < 0)
@@ -1284,7 +1297,7 @@ static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw)
 	msleep(50);
 
 	/* reload trimming parameter */
-	err = regmap_update_bits(hw->regmap, ST_LSM6DSX_REG_RESET_ADDR,
+	err = regmap_update_bits(hw->regmap, hw->settings->reset_addr,
 				 ST_LSM6DSX_REG_BOOT_MASK,
 				 FIELD_PREP(ST_LSM6DSX_REG_BOOT_MASK, 1));
 	if (err < 0)