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iio: accel: bma180: 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: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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@ -116,6 +116,7 @@ struct bma180_data {
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struct i2c_client *client;
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struct iio_trigger *trig;
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const struct bma180_part_info *part_info;
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struct iio_mount_matrix orientation;
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struct mutex mutex;
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bool sleep_state;
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int scale;
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@ -561,6 +562,15 @@ static int bma180_set_power_mode(struct iio_dev *indio_dev,
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return ret;
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}
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static const struct iio_mount_matrix *
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bma180_accel_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 bma180_data *data = iio_priv(indio_dev);
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return &data->orientation;
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}
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static const struct iio_enum bma180_power_mode_enum = {
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.items = bma180_power_modes,
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.num_items = ARRAY_SIZE(bma180_power_modes),
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@ -571,7 +581,8 @@ static const struct iio_enum bma180_power_mode_enum = {
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static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
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IIO_ENUM("power_mode", true, &bma180_power_mode_enum),
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IIO_ENUM_AVAILABLE("power_mode", &bma180_power_mode_enum),
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{ },
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IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bma180_accel_get_mount_matrix),
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{ }
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};
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#define BMA180_ACC_CHANNEL(_axis, _bits) { \
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@ -722,6 +733,11 @@ static int bma180_probe(struct i2c_client *client,
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chip = id->driver_data;
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data->part_info = &bma180_part_info[chip];
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ret = iio_read_mount_matrix(&client->dev, "mount-matrix",
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&data->orientation);
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if (ret)
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return ret;
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ret = data->part_info->chip_config(data);
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if (ret < 0)
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goto err_chip_disable;
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