diff options
| author | Egbert Eich <eich@suse.de> | 2017-07-18 18:20:53 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-07-25 23:37:06 +0300 |
| commit | 7b8bd6bb4298ac7c9aeb7ecab9e4864da3272b64 (patch) | |
| tree | d9c93aae19837bd131ac8726e620a03b6a716295 /drivers/gpu/drm/radeon/radeon_fb.c | |
| parent | c5c3579082bc03811e438771ceac4b26e8f33c93 (diff) | |
| download | linux-7b8bd6bb4298ac7c9aeb7ecab9e4864da3272b64.tar.xz | |
drm/radeon: Set depth on low mem to 16 bpp instead of 8 bpp
The radeon driver reduces the framebuffer resolution to 8bpp if a
device with less than 32MB VRAM is found. This causes the framebuffer
to run in 8 bit paletted mode. For a text console this is not an
issue as 256 different colors is more than one gets on a VGA text
console. However this leads to a poor 8bit pseudo-color visual when
running X on fbdev, too, which is quite ugly.
In this patch, we try to give some moderate compromise: limit the
framebuffer bpp to 8 only when VRAM is 8MB or less, and use 16 bpp
otherwise for 32MB or less VRAM.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_fb.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_fb.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c index 356ad90a5238..b5f2642f124b 100644 --- a/drivers/gpu/drm/radeon/radeon_fb.c +++ b/drivers/gpu/drm/radeon/radeon_fb.c @@ -347,9 +347,12 @@ int radeon_fbdev_init(struct radeon_device *rdev) if (list_empty(&rdev->ddev->mode_config.connector_list)) return 0; - /* select 8 bpp console on RN50 or 16MB cards */ - if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024)) + /* select 8 bpp console on 8MB cards, or 16 bpp on RN50 or 32MB */ + if (rdev->mc.real_vram_size <= (8*1024*1024)) bpp_sel = 8; + else if (ASIC_IS_RN50(rdev) || + rdev->mc.real_vram_size <= (32*1024*1024)) + bpp_sel = 16; rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL); if (!rfbdev) |