Commit 3a6049f6 authored by H. Nikolaus Schaller's avatar H. Nikolaus Schaller Committed by Jonathan Cameron
Browse files

iio: gyro: bmg160: 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 587c2bea
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+21 −0
Original line number Diff line number Diff line
@@ -102,6 +102,7 @@ struct bmg160_data {
	struct regmap *regmap;
	struct iio_trigger *dready_trig;
	struct iio_trigger *motion_trig;
	struct iio_mount_matrix orientation;
	struct mutex mutex;
	s16 buffer[8];
	u32 dps_range;
@@ -794,6 +795,20 @@ static int bmg160_write_event_config(struct iio_dev *indio_dev,
	return 0;
}

static const struct iio_mount_matrix *
bmg160_get_mount_matrix(const struct iio_dev *indio_dev,
			 const struct iio_chan_spec *chan)
{
	struct bmg160_data *data = iio_priv(indio_dev);

	return &data->orientation;
}

static const struct iio_chan_spec_ext_info bmg160_ext_info[] = {
	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bmg160_get_mount_matrix),
	{ }
};

static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("100 200 400 1000 2000");

static IIO_CONST_ATTR(in_anglvel_scale_available,
@@ -831,6 +846,7 @@ static const struct iio_event_spec bmg160_event = {
		.storagebits = 16,					\
		.endianness = IIO_LE,					\
	},								\
	.ext_info = bmg160_ext_info,					\
	.event_spec = &bmg160_event,					\
	.num_event_specs = 1						\
}
@@ -1075,6 +1091,11 @@ int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
	data->irq = irq;
	data->regmap = regmap;

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

	ret = bmg160_chip_init(data);
	if (ret < 0)
		return ret;