[Letux-kernel] [PATCH v2 08/10] iio: magnetometer: hmc5843: add mount matrix support

Jonathan Cameron jic23 at kernel.org
Sun Mar 3 16:24:27 CET 2019


On Thu, 21 Feb 2019 18:02:53 +0100
"H. Nikolaus Schaller" <hns at goldelico.com> 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 at goldelico.com>
Applied.

Thanks,

Jonathan

> ---
>  drivers/iio/magnetometer/hmc5843.h      |  1 +
>  drivers/iio/magnetometer/hmc5843_core.c | 20 ++++++++++++++++++--
>  2 files changed, 19 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/magnetometer/hmc5843.h b/drivers/iio/magnetometer/hmc5843.h
> index a75224cf99df..e3e22d2508d3 100644
> --- a/drivers/iio/magnetometer/hmc5843.h
> +++ b/drivers/iio/magnetometer/hmc5843.h
> @@ -43,6 +43,7 @@ struct hmc5843_data {
>  	struct mutex lock;
>  	struct regmap *regmap;
>  	const struct hmc5843_chip_info *variant;
> +	struct iio_mount_matrix orientation;
>  	__be16 buffer[8];
>  };
>  
> diff --git a/drivers/iio/magnetometer/hmc5843_core.c b/drivers/iio/magnetometer/hmc5843_core.c
> index ada142fb7aa3..05629ec56d80 100644
> --- a/drivers/iio/magnetometer/hmc5843_core.c
> +++ b/drivers/iio/magnetometer/hmc5843_core.c
> @@ -237,6 +237,15 @@ int hmc5843_set_measurement_configuration(struct iio_dev *indio_dev,
>  	return hmc5843_set_meas_conf(data, meas_conf);
>  }
>  
> +static const struct iio_mount_matrix *
> +hmc5843_get_mount_matrix(const struct iio_dev *indio_dev,
> +			  const struct iio_chan_spec *chan)
> +{
> +	struct hmc5843_data *data = iio_priv(indio_dev);
> +
> +	return &data->orientation;
> +}
> +
>  static const struct iio_enum hmc5843_meas_conf_enum = {
>  	.items = hmc5843_meas_conf_modes,
>  	.num_items = ARRAY_SIZE(hmc5843_meas_conf_modes),
> @@ -247,7 +256,8 @@ static const struct iio_enum hmc5843_meas_conf_enum = {
>  static const struct iio_chan_spec_ext_info hmc5843_ext_info[] = {
>  	IIO_ENUM("meas_conf", true, &hmc5843_meas_conf_enum),
>  	IIO_ENUM_AVAILABLE("meas_conf", &hmc5843_meas_conf_enum),
> -	{ },
> +	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, hmc5843_get_mount_matrix),
> +	{ }
>  };
>  
>  static const struct iio_enum hmc5983_meas_conf_enum = {
> @@ -260,7 +270,8 @@ static const struct iio_enum hmc5983_meas_conf_enum = {
>  static const struct iio_chan_spec_ext_info hmc5983_ext_info[] = {
>  	IIO_ENUM("meas_conf", true, &hmc5983_meas_conf_enum),
>  	IIO_ENUM_AVAILABLE("meas_conf", &hmc5983_meas_conf_enum),
> -	{ },
> +	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, hmc5843_get_mount_matrix),
> +	{ }
>  };
>  
>  static
> @@ -635,6 +646,11 @@ int hmc5843_common_probe(struct device *dev, struct regmap *regmap,
>  	data->variant = &hmc5843_chip_info_tbl[id];
>  	mutex_init(&data->lock);
>  
> +	ret = iio_read_mount_matrix(dev, "mount-matrix",
> +				&data->orientation);
> +	if (ret)
> +		return ret;
> +
>  	indio_dev->dev.parent = dev;
>  	indio_dev->name = name;
>  	indio_dev->info = &hmc5843_info;



More information about the Letux-kernel mailing list