> Allow to read the mount-matrix device tree property and provide the
> mount_matrix file for userspace to read.
>
> Signed-off-by: Martin Kepplinger <martin.kepplinger@xxxxxxx>
> ---
>
> tested using the lsm9ds1 on the librem5-devkit (and userspace tools like
> iio-sensor-proxy) where this will be needed.
>
> thanks,
>
> martin
>
>
>
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 18 ++++++++++++++++++
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 4 ++++
> 2 files changed, 22 insertions(+)
>
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> index a763ff46f596..8483f770b233 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> @@ -76,6 +76,7 @@ enum st_lsm6dsx_hw_id {
> .endianness = IIO_LE, \
> }, \
> .event_spec = &st_lsm6dsx_event, \
> + .ext_info = st_lsm6dsx_accel_ext_info, \
> .num_event_specs = 1, \
> }
>
> @@ -406,6 +407,8 @@ struct st_lsm6dsx_hw {
> struct iio_dev *iio_devs[ST_LSM6DSX_ID_MAX];
>
> const struct st_lsm6dsx_settings *settings;
> +
> + struct iio_mount_matrix orientation;
Could you please add doc for orientation struct as we did for all other member
of st_lsm6dsx_hw?
> };
>
> static __maybe_unused const struct iio_event_spec st_lsm6dsx_event = {
> @@ -479,4 +482,19 @@ st_lsm6dsx_write_locked(struct st_lsm6dsx_hw *hw, unsigned int addr,
> return err;
> }
>
> +static const struct iio_mount_matrix *
> +st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev,
> + const struct iio_chan_spec *chan)
static const inline struct iio_mount_matrix *
st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev
> +{
> + struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev);
> + struct st_lsm6dsx_hw *hw = sensor->hw;
> +
> + return &hw->orientation;
> +}
> +
> +static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
> + IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_lsm6dsx_get_mount_matrix),
> + { }
> +};
> +
> #endif /* ST_LSM6DSX_H */
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> index 0c64e35c7599..587e02bb9be9 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> @@ -2325,6 +2325,10 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
> (pdata && pdata->wakeup_source))
> device_init_wakeup(dev, true);
>
> + err = iio_read_mount_matrix(hw->dev, "mount-matrix", &hw->orientation);
> + if (err)
> + return err;
> +
> return 0;
return iio_read_mount_matrix(hw->dev, "mount-matrix",
&hw->orientation);
> }
> EXPORT_SYMBOL(st_lsm6dsx_probe);
> --
> 2.20.1
>
Attachment:
signature.asc
Description: PGP signature
