On Wed, Feb 17, 2021 at 11:51 PM Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
From: Mario Kleiner <mario.kleiner.de@xxxxxxxxx>
Spatial dithering to 10 bpc depth was disabled for all DCE's.
Testing on DCE-8.3 and DCE-11.2 did not show any obvious ill
effects, but a measureable precision improvement (via colorimeter)
when displaying a fp16 framebuffer to a 10 bpc DP or HDMI connected
HDR-10 monitor.
v2: enable it for all DCEs (Alex)
Signed-off-by: Mario Kleiner <mario.kleiner.de@xxxxxxxxx>
Cc: Alex Deucher <alexdeucher@xxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dce/dce_opp.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c b/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c
index 4600231da6cb..895b015b02e8 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c
@@ -216,9 +216,7 @@ static void set_spatial_dither(
REG_UPDATE(FMT_BIT_DEPTH_CONTROL,
FMT_TEMPORAL_DITHER_EN, 0);
- /* no 10bpc on DCE11*/
- if (params->flags.SPATIAL_DITHER_ENABLED == 0 ||
- params->flags.SPATIAL_DITHER_DEPTH == 2)
+ if (params->flags.SPATIAL_DITHER_ENABLED == 0)
return;
/* only use FRAME_COUNTER_MAX if frameRandom == 1*/
--
2.29.2
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