[PATCH] media: staging: document that Imgu not output auto-exposure statistics

[Bingbu Cao <bingbu.cao@xxxxxxxxx>]

Currently, Imgu can not support output the auto-exposure statistics into
ae_raw_buffer in 3A stats buffer, this patch document it.

Signed-off-by: Bingbu Cao <bingbu.cao@xxxxxxxxx>
---
 drivers/staging/media/ipu3/include/uapi/intel-ipu3.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/staging/media/ipu3/include/uapi/intel-ipu3.h b/drivers/staging/media/ipu3/include/uapi/intel-ipu3.h
index fa3d6ee5adf2..605113da1aed 100644
--- a/drivers/staging/media/ipu3/include/uapi/intel-ipu3.h
+++ b/drivers/staging/media/ipu3/include/uapi/intel-ipu3.h
@@ -534,6 +534,9 @@ struct ipu3_uapi_ff_status {
  *
  * @awb_raw_buffer: auto white balance meta data &ipu3_uapi_awb_raw_buffer
  * @ae_raw_buffer: auto exposure raw data &ipu3_uapi_ae_raw_buffer_aligned
+ *                 current Imgu does not output the auto exposure statistics
+ *                 to ae_raw_buffer, the user such as 3A algorithm can use the
+ *                 RGB table in &ipu3_uapi_awb_raw_buffer to do auto-exposure.
  * @af_raw_buffer: &ipu3_uapi_af_raw_buffer for auto focus meta data
  * @awb_fr_raw_buffer: value as specified by &ipu3_uapi_awb_fr_raw_buffer
  * @stats_4a_config: 4a statistics config as defined by &ipu3_uapi_4a_config.
-- 
2.7.4