drm/amd/display: Add Error Code for Dml Validation Failure

Any invalid mode from hw perspective should be given corresponding
error code, otherwise it leads to confusing warning message
"[drm] Mode Validation Warning: Validation OK failed validation."
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -5557,6 +5557,65 @@ void dml314_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_
 			}
 		}
 	}
+	for (i = v->soc.num_states; i >= 0; i--) {
+		for (j = 0; j < 2; j++) {
+			enum dm_validation_status status = DML_VALIDATION_OK;
+
+			if (!v->ScaleRatioAndTapsSupport) {
+				status = DML_FAIL_SCALE_RATIO_TAP;
+			} else if (!v->SourceFormatPixelAndScanSupport) {
+				status = DML_FAIL_SOURCE_PIXEL_FORMAT;
+			} else if (!v->ViewportSizeSupport[i][j]) {
+				status = DML_FAIL_VIEWPORT_SIZE;
+			} else if (P2IWith420) {
+				status = DML_FAIL_P2I_WITH_420;
+			} else if (DSCOnlyIfNecessaryWithBPP) {
+				status = DML_FAIL_DSC_ONLY_IF_NECESSARY_WITH_BPP;
+			} else if (DSC422NativeNotSupported) {
+				status = DML_FAIL_NOT_DSC422_NATIVE;
+			} else if (!v->ODMCombine4To1SupportCheckOK[i]) {
+				status = DML_FAIL_ODM_COMBINE4TO1;
+			} else if (v->NotEnoughDSCUnits[i]) {
+				status = DML_FAIL_NOT_ENOUGH_DSC;
+			} else if (!v->ROBSupport[i][j]) {
+				status = DML_FAIL_REORDERING_BUFFER;
+			} else if (!v->DISPCLK_DPPCLK_Support[i][j]) {
+				status = DML_FAIL_DISPCLK_DPPCLK;
+			} else if (!v->TotalAvailablePipesSupport[i][j]) {
+				status = DML_FAIL_TOTAL_AVAILABLE_PIPES;
+			} else if (!EnoughWritebackUnits) {
+				status = DML_FAIL_ENOUGH_WRITEBACK_UNITS;
+			} else if (!v->WritebackLatencySupport) {
+				status = DML_FAIL_WRITEBACK_LATENCY;
+			} else if (!v->WritebackScaleRatioAndTapsSupport) {
+				status = DML_FAIL_WRITEBACK_SCALE_RATIO_TAP;
+			} else if (!v->CursorSupport) {
+				status = DML_FAIL_CURSOR_SUPPORT;
+			} else if (!v->PitchSupport) {
+				status = DML_FAIL_PITCH_SUPPORT;
+			} else if (ViewportExceedsSurface) {
+				status = DML_FAIL_VIEWPORT_EXCEEDS_SURFACE;
+			} else if (!v->PrefetchSupported[i][j]) {
+				status = DML_FAIL_PREFETCH_SUPPORT;
+			} else if (!v->DynamicMetadataSupported[i][j]) {
+				status = DML_FAIL_DYNAMIC_METADATA;
+			} else if (!v->TotalVerticalActiveBandwidthSupport[i][j]) {
+				status = DML_FAIL_TOTAL_V_ACTIVE_BW;
+			} else if (!v->VRatioInPrefetchSupported[i][j]) {
+				status = DML_FAIL_V_RATIO_PREFETCH;
+			} else if (!v->PTEBufferSizeNotExceeded[i][j]) {
+				status = DML_FAIL_PTE_BUFFER_SIZE;
+			} else if (v->NonsupportedDSCInputBPC) {
+				status = DML_FAIL_DSC_INPUT_BPC;
+			} else if ((v->HostVMEnable
+					&& !v->ImmediateFlipSupportedForState[i][j])) {
+				status = DML_FAIL_HOST_VM_IMMEDIATE_FLIP;
+			} else if (FMTBufferExceeded) {
+				status = DML_FAIL_FMT_BUFFER_EXCEEDED;
+			}
+			mode_lib->vba.ValidationStatus[i] = status;
+		}
+	}
 
 	{
 		unsigned int MaximumMPCCombine = 0;

drivers/gpu/drm/amd/display/dc/dml/display_mode_enums.h

@@ -190,6 +190,14 @@ enum dm_validation_status {
 	DML_FAIL_DSC_INPUT_BPC,
 	DML_FAIL_PREFETCH_SUPPORT,
 	DML_FAIL_V_RATIO_PREFETCH,
+	DML_FAIL_P2I_WITH_420,
+	DML_FAIL_DSC_ONLY_IF_NECESSARY_WITH_BPP,
+	DML_FAIL_NOT_DSC422_NATIVE,
+	DML_FAIL_ODM_COMBINE4TO1,
+	DML_FAIL_ENOUGH_WRITEBACK_UNITS,
+	DML_FAIL_VIEWPORT_EXCEEDS_SURFACE,
+	DML_FAIL_DYNAMIC_METADATA,
+	DML_FAIL_FMT_BUFFER_EXCEEDED,
 };
 
 enum writeback_config {