From: Nuno Sa <nuno.sa@xxxxxxxxxx>
Add an helper function to set the direction. This is preliminary change
and will be useful for IIO backends that provide output buffers.
Signed-off-by: Nuno Sa <nuno.sa@xxxxxxxxxx>
---
drivers/iio/industrialio-buffer.c | 12 ++++++++++++
include/linux/iio/buffer.h | 3 +++
2 files changed, 15 insertions(+)
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index b581a7e80566..504e5a96bd90 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -1982,6 +1982,18 @@ void iio_buffer_put(struct iio_buffer *buffer)
}
EXPORT_SYMBOL_GPL(iio_buffer_put);
+/**
+ * iio_buffer_set_dir() - Set the buffer direction
+ * @buffer: The buffer to set the direction
+ * @direction: The direction
+ */
+void iio_buffer_set_dir(struct iio_buffer *buffer,
+ enum iio_buffer_direction direction)
+{
+ buffer->direction = direction;
+}
+EXPORT_SYMBOL(iio_buffer_set_dir);
+
/**
* iio_device_attach_buffer - Attach a buffer to a IIO device
* @indio_dev: The device the buffer should be attached to
diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
index 418b1307d3f2..aee52b834443 100644
--- a/include/linux/iio/buffer.h
+++ b/include/linux/iio/buffer.h
@@ -55,4 +55,7 @@ bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev,
int iio_device_attach_buffer(struct iio_dev *indio_dev,
struct iio_buffer *buffer);
+void iio_buffer_set_dir(struct iio_buffer *buffer,
+ enum iio_buffer_direction direction);
+
#endif /* _IIO_BUFFER_GENERIC_H_ */
--
2.43.0
