Commit d074e0f9 authored by Nicholas Susanto's avatar Nicholas Susanto Committed by Alex Deucher
Browse files

drm/amd/display: Fix DML calculation errors 



[Why]
DML calculations differ with DCN3.1 spreadsheet values due to
translations errors from the visual basic code

[How]
Add missing calculations that set the value for DSCDelay

Reviewed-by: default avatarNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: default avatarJun Lei <jun.lei@amd.com>
Acked-by: default avatarStylon Wang <stylon.wang@amd.com>
Signed-off-by: default avatarNicholas Susanto <nicholas.susanto@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent ced57520

drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c

+2 −0
Original line number Diff line number Diff line
@@ -2311,6 +2311,7 @@ static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman 
								v->OutputFormat[k],

								v->Output[k]) + dscComputeDelay(v->OutputFormat[k], v->Output[k]));

			}

			v->DSCDelay[k] = v->DSCDelay[k] + (v->HTotal[k] - v->HActive[k]) * dml_ceil((double) v->DSCDelay[k] / v->HActive[k], 1);

			v->DSCDelay[k] = v->DSCDelay[k] * v->PixelClock[k] / v->PixelClockBackEnd[k];

		} else {

			v->DSCDelay[k] = 0;
@@ -4719,6 +4720,7 @@ void dml314_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_ 
									v->OutputFormat[k],

									v->Output[k]) + dscComputeDelay(v->OutputFormat[k], v->Output[k]));

				}

				v->DSCDelayPerState[i][k] = v->DSCDelayPerState[i][k] + (v->HTotal[k] - v->HActive[k]) * dml_ceil((double) v->DSCDelayPerState[i][k] / v->HActive[k], 1.0);

				v->DSCDelayPerState[i][k] = v->DSCDelayPerState[i][k] * v->PixelClock[k] / v->PixelClockBackEnd[k];

			} else {

				v->DSCDelayPerState[i][k] = 0.0;