drm/amd/display: reduce stack for dml32_CalculateSwathAndDETConfiguration

Move stack variables to dummy structure.
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>

drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c

@@ -221,6 +221,7 @@ static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman
 		// VBA_DELTA
 		// Calculate DET size, swath height
 		dml32_CalculateSwathAndDETConfiguration(
+				&v->dummy_vars.dml32_CalculateSwathAndDETConfiguration,
 				mode_lib->vba.DETSizeOverride,
 				mode_lib->vba.UsesMALLForPStateChange,
 				mode_lib->vba.ConfigReturnBufferSizeInKByte,
@@ -1878,6 +1879,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 	}
 
 	dml32_CalculateSwathAndDETConfiguration(
+			&v->dummy_vars.dml32_CalculateSwathAndDETConfiguration,
 			mode_lib->vba.DETSizeOverride,
 			mode_lib->vba.UsesMALLForPStateChange,
 			mode_lib->vba.ConfigReturnBufferSizeInKByte,
@@ -2474,6 +2476,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
 			}
 
 			dml32_CalculateSwathAndDETConfiguration(
+					&v->dummy_vars.dml32_CalculateSwathAndDETConfiguration,
 					mode_lib->vba.DETSizeOverride,
 					mode_lib->vba.UsesMALLForPStateChange,
 					mode_lib->vba.ConfigReturnBufferSizeInKByte,

drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h

@@ -30,6 +30,7 @@
 #include "os_types.h"
 #include "../dc_features.h"
 #include "../display_mode_structs.h"
+#include "dml/display_mode_vba.h"
 
 unsigned int dml32_dscceComputeDelay(
 		unsigned int bpc,
@@ -81,6 +82,7 @@ void dml32_CalculateSinglePipeDPPCLKAndSCLThroughput(
 		double *DPPCLKUsingSingleDPP);
 
 void dml32_CalculateSwathAndDETConfiguration(
+		struct dml32_CalculateSwathAndDETConfiguration *st_vars,
 		unsigned int DETSizeOverride[],
 		enum dm_use_mall_for_pstate_change_mode UseMALLForPStateChange[],
 		unsigned int ConfigReturnBufferSizeInKByte,

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

@@ -182,6 +182,20 @@ void Calculate256BBlockSizes(
 		unsigned int *BlockWidth256BytesY,
 		unsigned int *BlockWidth256BytesC);
 
+struct dml32_CalculateSwathAndDETConfiguration {
+	unsigned int MaximumSwathHeightY[DC__NUM_DPP__MAX];
+	unsigned int MaximumSwathHeightC[DC__NUM_DPP__MAX];
+	unsigned int RoundedUpMaxSwathSizeBytesY[DC__NUM_DPP__MAX];
+	unsigned int RoundedUpMaxSwathSizeBytesC[DC__NUM_DPP__MAX];
+	unsigned int RoundedUpSwathSizeBytesY;
+	unsigned int RoundedUpSwathSizeBytesC;
+	double SwathWidthdoubleDPP[DC__NUM_DPP__MAX];
+	double SwathWidthdoubleDPPChroma[DC__NUM_DPP__MAX];
+	unsigned int TotalActiveDPP;
+	bool NoChromaSurfaces;
+	unsigned int DETBufferSizeInKByteForSwathCalculation;
+};
+
 struct DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation {
 	unsigned int dummy_integer_array[2][DC__NUM_DPP__MAX];
 	double dummy_single_array[2][DC__NUM_DPP__MAX];
@@ -253,6 +267,7 @@ struct dummy_vars {
 	struct DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation
 	DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation;
 	struct dml32_ModeSupportAndSystemConfigurationFull dml32_ModeSupportAndSystemConfigurationFull;
+	struct dml32_CalculateSwathAndDETConfiguration dml32_CalculateSwathAndDETConfiguration;
 };
 
 struct vba_vars_st {