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| author |   Mario Kleiner <mario.kleiner.de@gmail.com> | 2014-06-07 03:38:11 +0200 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2014-06-13 12:22:30 -0400 |
| commit | 4366f3b5f5a971cf348c298716b2cb29aab6ef4f (patch) | |
| tree | 84b5d4c51f934f314de9f2700359a6d6686e91d2 /drivers/gpu/drm/radeon/evergreen_reg.h | |
| parent | drm/radeon: use pixel formats instead of depth/bpp (diff) | |
| download | linux-dev-4366f3b5f5a971cf348c298716b2cb29aab6ef4f.tar.xz linux-dev-4366f3b5f5a971cf348c298716b2cb29aab6ef4f.zip | |
drm/radeon: Bypass hw lut's for > 8 bpc framebuffer scanout.
The hardware lut's only have 256 slots for indexing by a
8 bpc framebuffer. In 10 bpc scanout modes, framebuffer
color values would get truncated to their 8 msb's,
thereby losing the extra precision afforded by a 10 bpc
framebuffer.
To retain full precision, bypass the hw lut in 10 bpc
scanout mode.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/evergreen_reg.h')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen_reg.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen_reg.h b/drivers/gpu/drm/radeon/evergreen_reg.h index a0f63ff5a5e9..333d143fca2c 100644 --- a/drivers/gpu/drm/radeon/evergreen_reg.h +++ b/drivers/gpu/drm/radeon/evergreen_reg.h @@ -116,6 +116,8 @@ # define EVERGREEN_GRPH_ARRAY_LINEAR_ALIGNED 1 # define EVERGREEN_GRPH_ARRAY_1D_TILED_THIN1 2 # define EVERGREEN_GRPH_ARRAY_2D_TILED_THIN1 4 +#define EVERGREEN_GRPH_LUT_10BIT_BYPASS_CONTROL 0x6808 +# define EVERGREEN_LUT_10BIT_BYPASS_EN (1 << 8) #define EVERGREEN_GRPH_SWAP_CONTROL 0x680c # define EVERGREEN_GRPH_ENDIAN_SWAP(x) (((x) & 0x3) << 0) # define EVERGREEN_GRPH_ENDIAN_NONE 0 |