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Date:   Mon, 15 Jul 2019 15:19:17 +0200
From:   Martin Kepplinger <martin.kepplinger@...i.sm>
To:     lorenzo.bianconi83@...il.com, jic23@...nel.org, knaack.h@....de,
        lars@...afoo.de, pmeerw@...erw.net
Cc:     linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Martin Kepplinger <martin.kepplinger@...i.sm>
Subject: [PATCH 1/3] iio: imu: st_lsm6sdx: move some 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@...i.sm>
---
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h      |  6 ++++
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 31 ++++++++++++++------
 2 files changed, 28 insertions(+), 9 deletions(-)

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
index c14bf533b66b..f072ac14f213 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -196,6 +196,9 @@ struct st_lsm6dsx_ext_dev_settings {
 /**
  * struct st_lsm6dsx_settings - ST IMU sensor settings
  * @wai: Sensor WhoAmI default value.
+ * @reg_int1_addr: Control Register address for INT1
+ * @reg_int2_addr: Control Register address for INT2
+ * @reg_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.
  * @decimator: List of decimator register info (addr + mask).
@@ -206,6 +209,9 @@ struct st_lsm6dsx_ext_dev_settings {
  */
 struct st_lsm6dsx_settings {
 	u8 wai;
+	u8 reg_int1_addr;
+	u8 reg_int2_addr;
+	u8 reg_reset_addr;
 	u16 max_fifo_size;
 	struct {
 		enum st_lsm6dsx_hw_id hw_id;
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index a6702a74570e..7a4fe70a8f20 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/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)
 
 #define ST_LSM6DSX_REG_ACC_OUT_X_L_ADDR		0x28
 #define ST_LSM6DSX_REG_ACC_OUT_Y_L_ADDR		0x2a
@@ -122,6 +117,9 @@ static const struct st_lsm6dsx_fs_table_entry st_lsm6dsx_fs_table[] = {
 static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	{
 		.wai = 0x69,
+		.reg_int1_addr = 0x0d,
+		.reg_int2_addr = 0x0e,
+		.reg_reset_addr = 0x12,
 		.max_fifo_size = 1365,
 		.id = {
 			{
@@ -172,6 +170,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	},
 	{
 		.wai = 0x69,
+		.reg_int1_addr = 0x0d,
+		.reg_int2_addr = 0x0e,
+		.reg_reset_addr = 0x12,
 		.max_fifo_size = 682,
 		.id = {
 			{
@@ -222,6 +223,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	},
 	{
 		.wai = 0x6a,
+		.reg_int1_addr = 0x0d,
+		.reg_int2_addr = 0x0e,
+		.reg_reset_addr = 0x12,
 		.max_fifo_size = 682,
 		.id = {
 			{
@@ -278,6 +282,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	},
 	{
 		.wai = 0x6c,
+		.reg_int1_addr = 0x0d,
+		.reg_int2_addr = 0x0e,
+		.reg_reset_addr = 0x12,
 		.max_fifo_size = 512,
 		.id = {
 			{
@@ -349,6 +356,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	},
 	{
 		.wai = 0x6b,
+		.reg_int1_addr = 0x0d,
+		.reg_int2_addr = 0x0e,
+		.reg_reset_addr = 0x12,
 		.max_fifo_size = 512,
 		.id = {
 			{
@@ -391,6 +401,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	},
 	{
 		.wai = 0x6b,
+		.reg_int1_addr = 0x0d,
+		.reg_int2_addr = 0x0e,
+		.reg_reset_addr = 0x12,
 		.max_fifo_size = 512,
 		.id = {
 			{
@@ -873,10 +886,10 @@ 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->reg_int1_addr;
 		break;
 	case 2:
-		*drdy_reg = ST_LSM6DSX_REG_INT2_ADDR;
+		*drdy_reg = hw->settings->reg_int2_addr;
 		break;
 	default:
 		dev_err(hw->dev, "unsupported data ready pin\n");
@@ -976,7 +989,7 @@ 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->reg_reset_addr,
 				 ST_LSM6DSX_REG_RESET_MASK,
 				 FIELD_PREP(ST_LSM6DSX_REG_RESET_MASK, 1));
 	if (err < 0)
@@ -985,7 +998,7 @@ 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->reg_reset_addr,
 				 ST_LSM6DSX_REG_BOOT_MASK,
 				 FIELD_PREP(ST_LSM6DSX_REG_BOOT_MASK, 1));
 	if (err < 0)
-- 
2.20.1

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