From: Nikola Cornij nikola.cornij@amd.com
stable inclusion from stable-5.10.51 commit 57c63b47d6f188b44d93d1602bd24d8d9a9131f6 bugzilla: 175263 https://gitee.com/openeuler/kernel/issues/I4DT6F
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 346cf627fb27c0fea63a041cedbaa4f31784e504 ]
[why] DSCCLK validation is not necessary because DSCCLK is derrived from DISPCLK, therefore if DISPCLK validation passes, DSCCLK is valid, too. Doing DSCLK validation in addition to DISPCLK leads to modes being wrongly rejected when DSCCLK was incorrectly set outside of DML.
[how] Remove DSCCLK validation because it's implicitly validated under DISPCLK
Signed-off-by: Nikola Cornij nikola.cornij@amd.com Reviewed-by: Dmytro Laktyushkin Dmytro.Laktyushkin@amd.com Acked-by: Stylon Wang stylon.wang@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- .../dc/dml/dcn30/display_mode_vba_30.c | 64 ++++++------------- 1 file changed, 21 insertions(+), 43 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c b/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c index 9e0ae18e71fa..d66e89283c48 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c @@ -64,6 +64,7 @@ typedef struct { #define BPP_INVALID 0 #define BPP_BLENDED_PIPE 0xffffffff #define DCN30_MAX_DSC_IMAGE_WIDTH 5184 +#define DCN30_MAX_FMT_420_BUFFER_WIDTH 4096
static void DisplayPipeConfiguration(struct display_mode_lib *mode_lib); static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation( @@ -3987,19 +3988,30 @@ void dml30_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l } else if (v->PlaneRequiredDISPCLKWithoutODMCombine > v->MaxDispclkRoundedDownToDFSGranularity) { v->ODMCombineEnablePerState[i][k] = dm_odm_combine_mode_2to1; v->PlaneRequiredDISPCLK = v->PlaneRequiredDISPCLKWithODMCombine2To1; - } else if (v->DSCEnabled[k] && (v->HActive[k] > DCN30_MAX_DSC_IMAGE_WIDTH)) { - v->ODMCombineEnablePerState[i][k] = dm_odm_combine_mode_2to1; - v->PlaneRequiredDISPCLK = v->PlaneRequiredDISPCLKWithODMCombine2To1; } else { v->ODMCombineEnablePerState[i][k] = dm_odm_combine_mode_disabled; v->PlaneRequiredDISPCLK = v->PlaneRequiredDISPCLKWithoutODMCombine; - /*420 format workaround*/ - if (v->HActive[k] > 4096 && v->OutputFormat[k] == dm_420) { + } + if (v->DSCEnabled[k] && v->HActive[k] > DCN30_MAX_DSC_IMAGE_WIDTH + && v->ODMCombineEnablePerState[i][k] != dm_odm_combine_mode_4to1) { + if (v->HActive[k] / 2 > DCN30_MAX_DSC_IMAGE_WIDTH) { + v->ODMCombineEnablePerState[i][k] = dm_odm_combine_mode_4to1; + v->PlaneRequiredDISPCLK = v->PlaneRequiredDISPCLKWithODMCombine4To1; + } else { + v->ODMCombineEnablePerState[i][k] = dm_odm_combine_mode_2to1; + v->PlaneRequiredDISPCLK = v->PlaneRequiredDISPCLKWithODMCombine2To1; + } + } + if (v->OutputFormat[k] == dm_420 && v->HActive[k] > DCN30_MAX_FMT_420_BUFFER_WIDTH + && v->ODMCombineEnablePerState[i][k] != dm_odm_combine_mode_4to1) { + if (v->HActive[k] / 2 > DCN30_MAX_FMT_420_BUFFER_WIDTH) { + v->ODMCombineEnablePerState[i][k] = dm_odm_combine_mode_4to1; + v->PlaneRequiredDISPCLK = v->PlaneRequiredDISPCLKWithODMCombine4To1; + } else { v->ODMCombineEnablePerState[i][k] = dm_odm_combine_mode_2to1; v->PlaneRequiredDISPCLK = v->PlaneRequiredDISPCLKWithODMCombine2To1; } } - if (v->ODMCombineEnablePerState[i][k] == dm_odm_combine_mode_4to1) { v->MPCCombine[i][j][k] = false; v->NoOfDPP[i][j][k] = 4; @@ -4281,42 +4293,8 @@ void dml30_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l } }
- for (i = 0; i < v->soc.num_states; i++) { - v->DSCCLKRequiredMoreThanSupported[i] = false; - for (k = 0; k <= v->NumberOfActivePlanes - 1; k++) { - if (v->BlendingAndTiming[k] == k) { - if (v->Output[k] == dm_dp || v->Output[k] == dm_edp) { - if (v->OutputFormat[k] == dm_420) { - v->DSCFormatFactor = 2; - } else if (v->OutputFormat[k] == dm_444) { - v->DSCFormatFactor = 1; - } else if (v->OutputFormat[k] == dm_n422) { - v->DSCFormatFactor = 2; - } else { - v->DSCFormatFactor = 1; - } - if (v->RequiresDSC[i][k] == true) { - if (v->ODMCombineEnablePerState[i][k] == dm_odm_combine_mode_4to1) { - if (v->PixelClockBackEnd[k] / 12.0 / v->DSCFormatFactor - > (1.0 - v->DISPCLKDPPCLKDSCCLKDownSpreading / 100.0) * v->MaxDSCCLK[i]) { - v->DSCCLKRequiredMoreThanSupported[i] = true; - } - } else if (v->ODMCombineEnablePerState[i][k] == dm_odm_combine_mode_2to1) { - if (v->PixelClockBackEnd[k] / 6.0 / v->DSCFormatFactor - > (1.0 - v->DISPCLKDPPCLKDSCCLKDownSpreading / 100.0) * v->MaxDSCCLK[i]) { - v->DSCCLKRequiredMoreThanSupported[i] = true; - } - } else { - if (v->PixelClockBackEnd[k] / 3.0 / v->DSCFormatFactor - > (1.0 - v->DISPCLKDPPCLKDSCCLKDownSpreading / 100.0) * v->MaxDSCCLK[i]) { - v->DSCCLKRequiredMoreThanSupported[i] = true; - } - } - } - } - } - } - } + /* Skip dscclk validation: as long as dispclk is supported, dscclk is also implicitly supported */ + for (i = 0; i < v->soc.num_states; i++) { v->NotEnoughDSCUnits[i] = false; v->TotalDSCUnitsRequired = 0.0; @@ -5319,7 +5297,7 @@ void dml30_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l for (j = 0; j < 2; j++) { if (v->ScaleRatioAndTapsSupport == 1 && v->SourceFormatPixelAndScanSupport == 1 && v->ViewportSizeSupport[i][j] == 1 && v->DIOSupport[i] == 1 && v->ODMCombine4To1SupportCheckOK[i] == 1 - && v->NotEnoughDSCUnits[i] == 0 && v->DSCCLKRequiredMoreThanSupported[i] == 0 + && v->NotEnoughDSCUnits[i] == 0 && v->DTBCLKRequiredMoreThanSupported[i] == 0 && v->ROBSupport[i][j] == 1 && v->DISPCLK_DPPCLK_Support[i][j] == 1 && v->TotalAvailablePipesSupport[i][j] == 1 && EnoughWritebackUnits == 1 && WritebackModeSupport == 1