> Report iio motion events to iio subsystem
>
> Signed-off-by: Sean Nyekjaer <sean@xxxxxxxxxx>
> ---
> Changes since v3:
> * added wakeup_src_reg and masks to device settings
>
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 5 ++
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 51 ++++++++++++++++++++
> 2 files changed, 56 insertions(+)
>
nitpick inline
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> index d04473861fba..015b837f366f 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> @@ -186,6 +186,11 @@ struct st_lsm6dsx_shub_settings {
> struct st_lsm6dsx_event_settings {
> struct st_lsm6dsx_reg enable_reg;
> struct st_lsm6dsx_reg wakeup_reg;
> + u8 wakeup_src_reg;
> + u8 wakeup_src_status_mask;
> + u8 wakeup_src_z_mask;
> + u8 wakeup_src_y_mask;
> + u8 wakeup_src_x_mask;
> };
>
> enum st_lsm6dsx_ext_sensor_id {
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> index ce467308eadd..470821b54933 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> @@ -48,6 +48,7 @@
> #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>
> @@ -520,6 +521,11 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
> .addr = 0x5B,
> .mask = GENMASK(5, 0),
> },
> + .wakeup_src_reg = 0x1b,
> + .wakeup_src_status_mask = BIT(4),
> + .wakeup_src_z_mask = BIT(0),
> + .wakeup_src_y_mask = BIT(1),
> + .wakeup_src_x_mask = BIT(2),
> },
> },
> {
> @@ -1612,6 +1618,40 @@ static struct iio_dev *st_lsm6dsx_alloc_iiodev(struct st_lsm6dsx_hw *hw,
> return iio_dev;
> }
>
> +void 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 & hw->settings->event_settings.wakeup_src_z_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 & hw->settings->event_settings.wakeup_src_x_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 & hw->settings->event_settings.wakeup_src_x_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;
useless
> +}
> +
> static irqreturn_t st_lsm6dsx_handler_irq(int irq, void *private)
> {
> return IRQ_WAKE_THREAD;
> @@ -1621,6 +1661,17 @@ static irqreturn_t st_lsm6dsx_handler_thread(int irq, void *private)
> {
> struct st_lsm6dsx_hw *hw = private;
> int count;
> + int data, err;
> +
> + if (hw->enable_event) {
> + err = regmap_read(hw->regmap,
> + hw->settings->event_settings.wakeup_src_reg, &data);
> + if (err < 0)
> + return IRQ_NONE;
> +
> + if (data & hw->settings->event_settings.wakeup_src_status_mask)
> + st_lsm6dsx_report_motion_event(hw, data);
> + }
>
> mutex_lock(&hw->fifo_lock);
> count = hw->settings->fifo_ops.read_fifo(hw);
> --
> 2.23.0
>
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