Commit 70b5fdbb authored by H. Nikolaus Schaller's avatar H. Nikolaus Schaller Committed by Jonathan Cameron
Browse files

iio: gyro: itg3200: 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 avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 3a6049f6
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+20 −0
Original line number Diff line number Diff line
@@ -242,6 +242,20 @@ err_ret:
	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 @@ err_ret:
	.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;

+1 −0
Original line number Diff line number Diff line
@@ -104,6 +104,7 @@
struct itg3200 {
	struct i2c_client	*i2c;
	struct iio_trigger	*trig;
	struct iio_mount_matrix orientation;
};

enum ITG3200_SCAN_INDEX {