Commit 8d7ea738 authored by H. Nikolaus Schaller's avatar H. Nikolaus Schaller Committed by Jonathan Cameron
Browse files

iio: magnetometer: hmc5843: add mount matrix support 



This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio
clients.

Signed-off-by: default avatarH. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent d9842c77

drivers/iio/magnetometer/hmc5843.h

+1 −0
Original line number Diff line number Diff line
@@ -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];

};

drivers/iio/magnetometer/hmc5843_core.c

+18 −2
Original line number Diff line number Diff line
@@ -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;

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