On Thu, 21 Feb 2019 18:02:51 +0100
"H. Nikolaus Schaller" <hns@xxxxxxxxxxxxx> wrote:
> This patch allows to read a mount-matrix device tree
> property and report to user-space or in-kernel iio
> clients.
>
> Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
Applied.
Thanks,
Jonathan
> ---
> drivers/iio/gyro/itg3200_core.c | 20 ++++++++++++++++++++
> include/linux/iio/gyro/itg3200.h | 1 +
> 2 files changed, 21 insertions(+)
>
> diff --git a/drivers/iio/gyro/itg3200_core.c b/drivers/iio/gyro/itg3200_core.c
> index 7adecb562c81..203a6be33b70 100644
> --- a/drivers/iio/gyro/itg3200_core.c
> +++ b/drivers/iio/gyro/itg3200_core.c
> @@ -242,6 +242,20 @@ static int itg3200_initial_setup(struct iio_dev *indio_dev)
> return ret;
> }
>
> +static const struct iio_mount_matrix *
> +itg3200_get_mount_matrix(const struct iio_dev *indio_dev,
> + const struct iio_chan_spec *chan)
> +{
> + struct itg3200 *data = iio_priv(indio_dev);
> +
> + return &data->orientation;
> +}
> +
> +static const struct iio_chan_spec_ext_info itg3200_ext_info[] = {
> + IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, itg3200_get_mount_matrix),
> + { }
> +};
> +
> #define ITG3200_ST \
> { .sign = 's', .realbits = 16, .storagebits = 16, .endianness = IIO_BE }
>
> @@ -255,6 +269,7 @@ static int itg3200_initial_setup(struct iio_dev *indio_dev)
> .address = ITG3200_REG_GYRO_ ## _mod ## OUT_H, \
> .scan_index = ITG3200_SCAN_GYRO_ ## _mod, \
> .scan_type = ITG3200_ST, \
> + .ext_info = itg3200_ext_info, \
> }
>
> static const struct iio_chan_spec itg3200_channels[] = {
> @@ -297,6 +312,11 @@ static int itg3200_probe(struct i2c_client *client,
>
> st = iio_priv(indio_dev);
>
> + ret = iio_read_mount_matrix(&client->dev, "mount-matrix",
> + &st->orientation);
> + if (ret)
> + return ret;
> +
> i2c_set_clientdata(client, indio_dev);
> st->i2c = client;
>
> diff --git a/include/linux/iio/gyro/itg3200.h b/include/linux/iio/gyro/itg3200.h
> index 2a820850f284..0a30fddccfb3 100644
> --- a/include/linux/iio/gyro/itg3200.h
> +++ b/include/linux/iio/gyro/itg3200.h
> @@ -104,6 +104,7 @@
> struct itg3200 {
> struct i2c_client *i2c;
> struct iio_trigger *trig;
> + struct iio_mount_matrix orientation;
> };
>
> enum ITG3200_SCAN_INDEX {
