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authorMario Kleiner <mario.kleiner.de@gmail.com>2014-06-07 05:38:11 +0400
committerAlex Deucher <alexander.deucher@amd.com>2014-06-13 20:22:30 +0400
commit4366f3b5f5a971cf348c298716b2cb29aab6ef4f (patch)
tree84b5d4c51f934f314de9f2700359a6d6686e91d2 /drivers/gpu/drm/radeon/r500_reg.h
parent8bae42769da2346f7b3c783980f038826e09e84c (diff)
downloadlinux-4366f3b5f5a971cf348c298716b2cb29aab6ef4f.tar.xz
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/r500_reg.h')
-rw-r--r--drivers/gpu/drm/radeon/r500_reg.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r500_reg.h b/drivers/gpu/drm/radeon/r500_reg.h
index 1dd0d32993d5..136b7bc7cd20 100644
--- a/drivers/gpu/drm/radeon/r500_reg.h
+++ b/drivers/gpu/drm/radeon/r500_reg.h
@@ -402,6 +402,7 @@
* block and vice versa. This applies to GRPH, CUR, etc.
*/
#define AVIVO_D1GRPH_LUT_SEL 0x6108
+# define AVIVO_LUT_10BIT_BYPASS_EN (1 << 8)
#define AVIVO_D1GRPH_PRIMARY_SURFACE_ADDRESS 0x6110
#define R700_D1GRPH_PRIMARY_SURFACE_ADDRESS_HIGH 0x6914
#define R700_D2GRPH_PRIMARY_SURFACE_ADDRESS_HIGH 0x6114