> Report iio motion events to iio subsystem
>
> Signed-off-by: Sean Nyekjaer <sean@xxxxxxxxxx>
> ---
>
> Changes since v1:
> * none
>
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 52 ++++++++++++++++++++
> 1 file changed, 52 insertions(+)
>
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> index 0503abab6efc..acc653d5e00e 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> @@ -39,6 +39,7 @@
> #include <linux/kernel.h>
> #include <linux/module.h>
> #include <linux/delay.h>
> +#include <linux/iio/events.h>
> #include <linux/iio/iio.h>
> #include <linux/iio/sysfs.h>
> #include <linux/interrupt.h>
> @@ -76,6 +77,12 @@
> #define ST_LSM6DSX_REG_GYRO_OUT_Y_L_ADDR 0x24
> #define ST_LSM6DSX_REG_GYRO_OUT_Z_L_ADDR 0x26
>
> +#define ST_LSM6DSX_REG_WAKE_UP_SRC_ADDR 0x1B
> +#define ST_LSM6DSX_REG_WAKE_UP_SRC_Z_WU_MASK BIT(0)
> +#define ST_LSM6DSX_REG_WAKE_UP_SRC_Y_WU_MASK BIT(1)
> +#define ST_LSM6DSX_REG_WAKE_UP_SRC_X_WU_MASK BIT(2)
> +#define ST_LSM6DSX_REG_WAKE_UP_SRC_WU_MASK BIT(3)
> +
> #define ST_LSM6DSX_REG_TAP_CFG_ADDR 0x58
> #define ST_LSM6DSX_REG_TAP_CFG_INT_EN_MASK BIT(7)
>
> @@ -1212,6 +1219,39 @@ int st_lsm6dsx_event_setup(int id, struct st_lsm6dsx_hw *hw)
>
> return err;
> }
> +int st_lsm6dsx_report_motion_event(struct st_lsm6dsx_hw *hw, int data)
> +{
> + s64 timestamp = iio_get_time_ns(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
> +
> + if (data & ST_LSM6DSX_REG_WAKE_UP_SRC_Z_WU_MASK)
> + iio_push_event(hw->iio_devs[ST_LSM6DSX_ID_ACC],
> + IIO_MOD_EVENT_CODE(IIO_ACCEL,
> + 0,
> + IIO_MOD_Z,
> + IIO_EV_TYPE_THRESH,
> + IIO_EV_DIR_EITHER),
> + timestamp);
> +
> + if (data & ST_LSM6DSX_REG_WAKE_UP_SRC_Y_WU_MASK)
> + iio_push_event(hw->iio_devs[ST_LSM6DSX_ID_ACC],
> + IIO_MOD_EVENT_CODE(IIO_ACCEL,
> + 0,
> + IIO_MOD_Y,
> + IIO_EV_TYPE_THRESH,
> + IIO_EV_DIR_EITHER),
> + timestamp);
> +
> + if (data & ST_LSM6DSX_REG_WAKE_UP_SRC_X_WU_MASK)
> + iio_push_event(hw->iio_devs[ST_LSM6DSX_ID_ACC],
> + IIO_MOD_EVENT_CODE(IIO_ACCEL,
> + 0,
> + IIO_MOD_X,
> + IIO_EV_TYPE_THRESH,
> + IIO_EV_DIR_EITHER),
> + timestamp);
> +
> + return 0;
> +}
>
> static irqreturn_t st_lsm6dsx_handler_irq(int irq, void *private)
> {
> @@ -1222,7 +1262,19 @@ static irqreturn_t st_lsm6dsx_handler_thread(int irq, void *private)
> {
> struct st_lsm6dsx_hw *hw = private;
> int count = 0;
> + int data, err;
> +
> + if (hw->enable_event) {
> + err = regmap_read(hw->regmap,
> + ST_LSM6DSX_REG_WAKE_UP_SRC_ADDR, &data);
I think we can move the ST_LSM6DSX_REG_WAKE_UP_SRC_ADDR read in
st_lsm6dsx_report_motion_event (and rename it) and avoid goto try_fifo
> + if (err < 0)
> + goto try_fifo;
> +
> + if (data & ST_LSM6DSX_REG_WAKE_UP_SRC_WU_MASK)
> + st_lsm6dsx_report_motion_event(hw, data);
> + }
>
> +try_fifo:
> if (hw->sip > 0) {
> mutex_lock(&hw->fifo_lock);
> count = st_lsm6dsx_read_fifo(hw);
> --
> 2.22.0
>
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