diff options
| author | Lewis Huang <Lewis.Huang@amd.com> | 2020-04-22 10:01:23 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-05-05 13:11:36 -0400 |
| commit | b130cc4eec04d2cedf1af9e630530859c8a60d7c (patch) | |
| tree | 01c63b9f6c8a77c3446571ccdd1814bf1210cb0b /drivers/gpu/drm/amd/display | |
| parent | f00889dc7157fa32d2319483b713752ed37ea0e5 (diff) | |
drm/amd/display: temporary clamp the vratio used to 1.0
[Why]
in Is_Support function, driver report different caps between
same timing but different scaling cause OS inconsistent.
[How]
min_row_time is a local that’s only used for verifying immediate
flip support. Clamp the vratio used for its calculation to 1.0.
Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c index 5bc80b6084da..a576eed94d9b 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c @@ -3190,6 +3190,7 @@ static void CalculateFlipSchedule( double TimeForFetchingRowInVBlankImmediateFlip; double ImmediateFlipBW; double HostVMInefficiencyFactor; + double VRatioClamped; if (GPUVMEnable == true && HostVMEnable == true) { HostVMInefficiencyFactor = @@ -3222,31 +3223,32 @@ static void CalculateFlipSchedule( *DestinationLinesToRequestRowInImmediateFlip = dml_ceil(4.0 * (TimeForFetchingRowInVBlankImmediateFlip / LineTime), 1) / 4.0; *final_flip_bw = dml_max(PDEAndMetaPTEBytesPerFrame * HostVMInefficiencyFactor / (*DestinationLinesToRequestVMInImmediateFlip * LineTime), (MetaRowBytes + DPTEBytesPerRow) * HostVMInefficiencyFactor / (*DestinationLinesToRequestRowInImmediateFlip * LineTime)); + VRatioClamped = (VRatio < 1.0) ? 1.0 : VRatio; if (SourcePixelFormat == dm_420_8 || SourcePixelFormat == dm_420_10) { if (GPUVMEnable == true && DCCEnable != true) { min_row_time = dml_min( - dpte_row_height * LineTime / VRatio, - dpte_row_height_chroma * LineTime / (VRatio / 2)); + dpte_row_height * LineTime / VRatioClamped, + dpte_row_height_chroma * LineTime / (VRatioClamped / 2)); } else if (GPUVMEnable != true && DCCEnable == true) { min_row_time = dml_min( - meta_row_height * LineTime / VRatio, - meta_row_height_chroma * LineTime / (VRatio / 2)); + meta_row_height * LineTime / VRatioClamped, + meta_row_height_chroma * LineTime / (VRatioClamped / 2)); } else { min_row_time = dml_min4( - dpte_row_height * LineTime / VRatio, - meta_row_height * LineTime / VRatio, - dpte_row_height_chroma * LineTime / (VRatio / 2), - meta_row_height_chroma * LineTime / (VRatio / 2)); + dpte_row_height * LineTime / VRatioClamped, + meta_row_height * LineTime / VRatioClamped, + dpte_row_height_chroma * LineTime / (VRatioClamped / 2), + meta_row_height_chroma * LineTime / (VRatioClamped / 2)); } } else { if (GPUVMEnable == true && DCCEnable != true) { - min_row_time = dpte_row_height * LineTime / VRatio; + min_row_time = dpte_row_height * LineTime / VRatioClamped; } else if (GPUVMEnable != true && DCCEnable == true) { - min_row_time = meta_row_height * LineTime / VRatio; + min_row_time = meta_row_height * LineTime / VRatioClamped; } else { min_row_time = dml_min( - dpte_row_height * LineTime / VRatio, - meta_row_height * LineTime / VRatio); + dpte_row_height * LineTime / VRatioClamped, + meta_row_height * LineTime / VRatioClamped); } } |