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video: Add a comment for struct video_uc_platdata

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Add a few notes to explain the purpose of each member of this struct.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2020-07-02 21:12:19 -06:00 committed by Bin Meng
parent 2d7c268b59
commit 5a6cea37c6
1 changed files with 12 additions and 0 deletions
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12
include/video.h
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@ -19,6 +19,18 @@
struct udevice;
/**
* struct video_uc_platdata - uclass platform data for a video device
*
* This holds information that the uclass needs to know about each device. It
* is accessed using dev_get_uclass_platdata(dev). See 'Theory of operation' at
* the top of video-uclass.c for details on how this information is set.
*
* @align: Frame-buffer alignment, indicating the memory boundary the frame
* buffer should start on. If 0, 1MB is assumed
* @size: Frame-buffer size, in bytes
* @base: Base address of frame buffer, 0 if not yet known
*/
struct video_uc_platdata {
uint align;
uint size;