diff options
| author | Pali Rohár <pali@kernel.org> | 2022-03-09 20:46:00 +0100 |
|---|---|---|
| committer | Anatolij Gustschin <agust@denx.de> | 2022-03-09 21:26:54 +0100 |
| commit | bd0df8236987df03e6131f923e31c3d9f943d086 (patch) | |
| tree | e12bc12a96174de643ac834631904437206e5767 /drivers/video | |
| parent | 515a2f7c021fbe1c3dcf897d7337800f721f87b5 (diff) | |
video: Allow drivers to allocate the frame buffer themselves
When plat->base is set by driver then skip frame buffer reservation
and allocation.
Signed-off-by: Pali Rohár <pali@kernel.org>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/video-uclass.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c index 7d499bcec5..88797d4a21 100644 --- a/drivers/video/video-uclass.c +++ b/drivers/video/video-uclass.c @@ -33,7 +33,8 @@ * information represents the requires size and alignment of the frame buffer * for the device. The values can be an over-estimate but cannot be too * small. The actual values will be suppled (in the same manner) by the bind() - * method after relocation. + * method after relocation. Additionally driver can allocate frame buffer + * itself by setting plat->base. * * This information is then picked up by video_reserve() which works out how * much memory is needed for all devices. This is allocated between @@ -78,6 +79,10 @@ static ulong alloc_fb(struct udevice *dev, ulong *addrp) if (!plat->size) return 0; + /* Allow drivers to allocate the frame buffer themselves */ + if (plat->base) + return 0; + align = plat->align ? plat->align : 1 << 20; base = *addrp - plat->size; base &= ~(align - 1); |