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Message-ID: <20190819084710.GA17835@localhost.localdomain>
Date: Mon, 19 Aug 2019 10:47:10 +0200
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: Martin Kepplinger <martin.kepplinger@...i.sm>
Cc: lorenzo.bianconi83@...il.com, jic23@...nel.org, knaack.h@....de,
lars@...afoo.de, pmeerw@...erw.net, robh+dt@...nel.org,
mark.rutland@....com, linux-iio@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/3] iio: imu: st_lsm6sdx: 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@...i.sm>
Acked-by: Lorenzo Bianconi <lorenzo@...nel.org>
> ---
> 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 4e8e67ae1632..c8f333902eb7 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> @@ -200,6 +200,9 @@ 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.
> @@ -213,6 +216,9 @@ 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;
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> index 85824d6739ee..56e1c5262a2c 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)
>
> 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 = {
> {
> @@ -186,6 +184,9 @@ 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 = {
> {
> @@ -294,6 +295,9 @@ 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 = {
> {
> @@ -411,6 +415,9 @@ 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 = {
> {
> @@ -540,6 +547,9 @@ 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 = {
> {
> @@ -640,6 +650,9 @@ 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 = {
> {
> @@ -1166,10 +1179,10 @@ 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");
> @@ -1269,7 +1282,7 @@ 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)
> @@ -1278,7 +1291,7 @@ 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)
> --
> 2.20.1
>
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