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video: Allow a copy framebuffer with pre-allocated fb

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At present it is not possible for the video driver to use a pre-allocated
frame buffer (such as is done with EFI) with the copy framebuffer. This
can be useful to speed up the display.

Adjust the implementation so that copy_size can be set to the required
size, with this being allocated if the normal framebuffer size is 0.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2023-03-10 12:47:17 -08:00
committed by Heinrich Schuchardt
parent f62229227c
commit 315e367977
2 changed files with 26 additions and 8 deletions
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2
include/video.h
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@@ -24,6 +24,7 @@ struct udevice;
* @base: Base address of frame buffer, 0 if not yet known
* @copy_base: Base address of a hardware copy of the frame buffer. See
* CONFIG_VIDEO_COPY.
* @copy_size: Size of copy framebuffer, used if @size is 0
* @hide_logo: Hide the logo (used for testing)
*/
struct video_uc_plat {
@@ -31,6 +32,7 @@ struct video_uc_plat {
uint size;
ulong base;
ulong copy_base;
ulong copy_size;
bool hide_logo;
};