colin/u-boot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

bcm2835: Dynamically calculate bytes per pixel parameter

Browse Source 
brcm,bcm2708-fb device provided by firmware on RPi5 uses
16 bits per pixel, so lets calculate framebuffer bytes
per pixel dynamically based on queried information.

Tested to work for RPi2b v1.2, RPi3b v1.3, RPi4b v1.1,
RPi2 Zero W, RPi5b v1.0.

Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Tested-by: Jens Maus <mail@jens-maus.de>
Tested-by: Darko Alavanja <darko.alavanja@konsulko.com>
Signed-off-by: Ivan T. Ivanov <iivanov@suse.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
This commit is contained in:
Ivan T. Ivanov
2024-01-23 10:07:56 +02:00
committed by Matthias Brugger
parent 08a5b4bd6c
commit cce167eb8d
1 changed files with 16 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/video/bcm2835.c
View File

@@ -16,7 +16,7 @@ static int bcm2835_video_probe(struct udevice *dev)
struct video_uc_plat *plat = dev_get_uclass_plat(dev); struct video_uc_plat *plat = dev_get_uclass_plat(dev);
struct video_priv *uc_priv = dev_get_uclass_priv(dev); struct video_priv *uc_priv = dev_get_uclass_priv(dev);
int ret; int ret;
int w, h, pitch; int w, h, pitch, bpp;
ulong fb_base, fb_size, fb_start, fb_end; ulong fb_base, fb_size, fb_start, fb_end;
debug("bcm2835: Query resolution...\n"); debug("bcm2835: Query resolution...\n");
@@ -41,9 +41,23 @@ static int bcm2835_video_probe(struct udevice *dev)
DCACHE_WRITEBACK); DCACHE_WRITEBACK);
video_set_flush_dcache(dev, true); video_set_flush_dcache(dev, true);
bpp = pitch / w;
switch (bpp) {
case 2:
uc_priv->bpix = VIDEO_BPP16;
break;
case 4:
uc_priv->bpix = VIDEO_BPP32;
break;
default:
printf("bcm2835: unexpected bpp %d, pitch %d, width %d\n",
bpp, pitch, w);
uc_priv->bpix = VIDEO_BPP32;
break;
}
uc_priv->xsize = w; uc_priv->xsize = w;
uc_priv->ysize = h; uc_priv->ysize = h;
uc_priv->bpix = VIDEO_BPP32;
plat->base = fb_base; plat->base = fb_base;
plat->size = fb_size; plat->size = fb_size;