The functions dml30_CalculateWriteBackDISPCLK and
dml31_CalculateWriteBackDISPCLK are identical. Therefor, to avoid code
duplication, replace dml31_CalculateWriteBackDISPCLK by
dml30_CalculateWriteBackDISPCLK

Signed-off-by: Maíra Canal <mairaca...@riseup.net>
---
v1 -> v2:
- Describe changes in imperative mood (André Almeida).
---
 .../dc/dml/dcn31/display_mode_vba_31.c        | 24 ++-----------------
 .../dc/dml/dcn31/display_mode_vba_31.h        | 11 ---------
 2 files changed, 2 insertions(+), 33 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c 
b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
index 3fab19134480..3bc529f0b0fc 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
@@ -2085,7 +2085,7 @@ static void 
DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman
                if (v->WritebackEnable[k]) {
                        v->WritebackDISPCLK = dml_max(
                                        v->WritebackDISPCLK,
-                                       dml31_CalculateWriteBackDISPCLK(
+                                       dml30_CalculateWriteBackDISPCLK(
                                                        
v->WritebackPixelFormat[k],
                                                        v->PixelClock[k],
                                                        v->WritebackHRatio[k],
@@ -3470,26 +3470,6 @@ static double CalculateTWait(unsigned int PrefetchMode, 
double DRAMClockChangeLa
        }
 }
 
-double dml31_CalculateWriteBackDISPCLK(
-               enum source_format_class WritebackPixelFormat,
-               double PixelClock,
-               double WritebackHRatio,
-               double WritebackVRatio,
-               unsigned int WritebackHTaps,
-               unsigned int WritebackVTaps,
-               long WritebackSourceWidth,
-               long WritebackDestinationWidth,
-               unsigned int HTotal,
-               unsigned int WritebackLineBufferSize)
-{
-       double DISPCLK_H, DISPCLK_V, DISPCLK_HB;
-
-       DISPCLK_H = PixelClock * dml_ceil(WritebackHTaps / 8.0, 1) / 
WritebackHRatio;
-       DISPCLK_V = PixelClock * (WritebackVTaps * 
dml_ceil(WritebackDestinationWidth / 6.0, 1) + 8.0) / HTotal;
-       DISPCLK_HB = PixelClock * WritebackVTaps * (WritebackDestinationWidth * 
WritebackVTaps - WritebackLineBufferSize / 57.0) / 6.0 / WritebackSourceWidth;
-       return dml_max3(DISPCLK_H, DISPCLK_V, DISPCLK_HB);
-}
-
 static double CalculateWriteBackDelay(
                enum source_format_class WritebackPixelFormat,
                double WritebackHRatio,
@@ -4055,7 +4035,7 @@ void dml31_ModeSupportAndSystemConfigurationFull(struct 
display_mode_lib *mode_l
                if (v->WritebackEnable[k] == true) {
                        v->WritebackRequiredDISPCLK = dml_max(
                                        v->WritebackRequiredDISPCLK,
-                                       dml31_CalculateWriteBackDISPCLK(
+                                       dml30_CalculateWriteBackDISPCLK(
                                                        
v->WritebackPixelFormat[k],
                                                        v->PixelClock[k],
                                                        v->WritebackHRatio[k],
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.h 
b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.h
index 90be612f26b2..654362adcaa9 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.h
@@ -28,16 +28,5 @@
 
 void dml31_recalculate(struct display_mode_lib *mode_lib);
 void dml31_ModeSupportAndSystemConfigurationFull(struct display_mode_lib 
*mode_lib);
-double dml31_CalculateWriteBackDISPCLK(
-               enum source_format_class WritebackPixelFormat,
-               double PixelClock,
-               double WritebackHRatio,
-               double WritebackVRatio,
-               unsigned int WritebackHTaps,
-               unsigned int WritebackVTaps,
-               long   WritebackSourceWidth,
-               long   WritebackDestinationWidth,
-               unsigned int HTotal,
-               unsigned int WritebackLineBufferSize);
 
 #endif /* __DML31_DISPLAY_MODE_VBA_H__ */
-- 
2.36.1

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