From: Vasiliy Doylov <nekodevelopper@xxxxxxxxx>
This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio clients.
Signed-off-by: Vasiliy Doylov <nekodevelopper@xxxxxxxxx>
---
drivers/iio/accel/mc3230.c | 28 ++++++++++++++++++++++++----
1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/accel/mc3230.c b/drivers/iio/accel/mc3230.c
index caa40a14a6316acae3a972f0ebe0b325db96eb44..a153a3f715ed7f2f1417618715767f265b49191d 100644
--- a/drivers/iio/accel/mc3230.c
+++ b/drivers/iio/accel/mc3230.c
@@ -44,18 +44,34 @@ static const int mc3230_nscale = 115411765;
.channel2 = IIO_MOD_##axis, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ .ext_info = mc3230_ext_info, \
}
+struct mc3230_data {
+ struct i2c_client *client;
+ struct iio_mount_matrix orientation;
+};
+
+static const struct iio_mount_matrix *
+mc3230_get_mount_matrix(const struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan)
+{
+ struct mc3230_data *data = iio_priv(indio_dev);
+
+ return &data->orientation;
+}
+
+static const struct iio_chan_spec_ext_info mc3230_ext_info[] = {
+ IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, mc3230_get_mount_matrix),
+ {}
+};
+
static const struct iio_chan_spec mc3230_channels[] = {
MC3230_CHANNEL(MC3230_REG_XOUT, X),
MC3230_CHANNEL(MC3230_REG_YOUT, Y),
MC3230_CHANNEL(MC3230_REG_ZOUT, Z),
};
-struct mc3230_data {
- struct i2c_client *client;
-};
-
static int mc3230_set_opcon(struct mc3230_data *data, int opcon)
{
int ret;
@@ -141,6 +157,10 @@ static int mc3230_probe(struct i2c_client *client)
if (ret < 0)
return ret;
+ ret = iio_read_mount_matrix(&client->dev, &data->orientation);
+ if (ret)
+ return ret;
+
ret = iio_device_register(indio_dev);
if (ret < 0) {
dev_err(&client->dev, "device_register failed\n");
--
2.47.1
