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media: staging: ipu3-imgu: clarify the limitation of grid config

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There are some grid configuration limitations for ImgU, which was
not described clearly in current uAPI header file, add the description
to help user to set the grid configuration correctly.

Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.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 2021-10-18 03:48:15 +01:00 committed by Mauro Carvalho Chehab
parent cffd616086
commit 9b005ce906
1 changed files with 8 additions and 2 deletions
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10
drivers/staging/media/ipu3/include/uapi/intel-ipu3.h
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@ -34,11 +34,17 @@
* struct ipu3_uapi_grid_config - Grid plane config
*
* @width: Grid horizontal dimensions, in number of grid blocks(cells).
* For AWB, the range is (16, 80).
* For AF/AE, the range is (16, 32).
* @height: Grid vertical dimensions, in number of grid cells.
* For AWB, the range is (16, 60).
* For AF/AE, the range is (16, 24).
* @block_width_log2: Log2 of the width of each cell in pixels.
* for (2^3, 2^4, 2^5, 2^6, 2^7), values [3, 7].
* For AWB, the range is [3, 6].
* For AF/AE, the range is [3, 7].
* @block_height_log2: Log2 of the height of each cell in pixels.
* for (2^3, 2^4, 2^5, 2^6, 2^7), values [3, 7].
* For AWB, the range is [3, 6].
* For AF/AE, the range is [3, 7].
* @height_per_slice: The number of blocks in vertical axis per slice.
* Default 2.
* @x_start: X value of top left corner of Region of Interest(ROI).