Commit 04e6fedb authored by Martin Kepplinger's avatar Martin Kepplinger Committed by Jonathan Cameron
Browse files

iio: imu: st_lsm6dsx: add mount matrix support



Allow to read the mount-matrix device tree property and provide the
mount_matrix file for userspace to read.

Signed-off-by: default avatarMartin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 622b4339
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+19 −0
Original line number Diff line number Diff line
@@ -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,						\
}

@@ -378,6 +379,7 @@ struct st_lsm6dsx_sensor {
 * @enable_event: enabled event bitmask.
 * @iio_devs: Pointers to acc/gyro iio_dev instances.
 * @settings: Pointer to the specific sensor settings in use.
 * @orientation: sensor chip orientation relative to main hardware.
 */
struct st_lsm6dsx_hw {
	struct device *dev;
@@ -404,6 +406,8 @@ struct st_lsm6dsx_hw {
	struct iio_dev *iio_devs[ST_LSM6DSX_ID_MAX];

	const struct st_lsm6dsx_settings *settings;

	struct iio_mount_matrix orientation;
};

static __maybe_unused const struct iio_event_spec st_lsm6dsx_event = {
@@ -477,4 +481,19 @@ st_lsm6dsx_write_locked(struct st_lsm6dsx_hw *hw, unsigned int addr,
	return err;
}

static const inline struct iio_mount_matrix *
st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev,
			    const struct iio_chan_spec *chan)
{
	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 */
+4 −0
Original line number Diff line number Diff line
@@ -2337,6 +2337,10 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
			return err;
	}

	err = iio_read_mount_matrix(hw->dev, "mount-matrix", &hw->orientation);
	if (err)
		return err;

	for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) {
		if (!hw->iio_devs[i])
			continue;