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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: H. Nikolaus Schaller <hns@goldelico.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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@ -242,6 +242,20 @@ err_ret:
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return ret;
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}
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static const struct iio_mount_matrix *
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itg3200_get_mount_matrix(const struct iio_dev *indio_dev,
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const struct iio_chan_spec *chan)
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{
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struct itg3200 *data = iio_priv(indio_dev);
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return &data->orientation;
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}
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static const struct iio_chan_spec_ext_info itg3200_ext_info[] = {
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IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, itg3200_get_mount_matrix),
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{ }
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};
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#define ITG3200_ST \
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{ .sign = 's', .realbits = 16, .storagebits = 16, .endianness = IIO_BE }
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@ -255,6 +269,7 @@ err_ret:
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.address = ITG3200_REG_GYRO_ ## _mod ## OUT_H, \
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.scan_index = ITG3200_SCAN_GYRO_ ## _mod, \
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.scan_type = ITG3200_ST, \
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.ext_info = itg3200_ext_info, \
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}
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static const struct iio_chan_spec itg3200_channels[] = {
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@ -297,6 +312,11 @@ static int itg3200_probe(struct i2c_client *client,
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st = iio_priv(indio_dev);
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ret = iio_read_mount_matrix(&client->dev, "mount-matrix",
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&st->orientation);
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if (ret)
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return ret;
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i2c_set_clientdata(client, indio_dev);
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st->i2c = client;
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@ -104,6 +104,7 @@
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struct itg3200 {
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struct i2c_client *i2c;
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struct iio_trigger *trig;
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struct iio_mount_matrix orientation;
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};
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enum ITG3200_SCAN_INDEX {
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