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

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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@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Bingbu Cao
2021-07-16 10:06:28 +02:00
committed by Mauro Carvalho Chehab
parent 311a839a1a
commit 3a7438c8ef
1 changed files with 6 additions and 1 deletions
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7
drivers/staging/media/ipu3/include/uapi/intel-ipu3.h
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@@ -234,7 +234,9 @@ struct ipu3_uapi_ae_ccm {
* struct ipu3_uapi_ae_config - AE config
*
* @grid_cfg: config for auto exposure statistics grid. See struct
* &ipu3_uapi_ae_grid_config
* &ipu3_uapi_ae_grid_config, as Imgu did not support output
* auto exposure statistics, so user can ignore this configuration
* and use the RGB table in auto-whitebalance statistics instead.
* @weights: &IPU3_UAPI_AE_WEIGHTS is based on 32x24 blocks in the grid.
* Each grid cell has a corresponding value in weights LUT called
* grid value, global histogram is updated based on grid value and
@@ -534,6 +536,9 @@ 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.