linux-kernel - [PATCH 2/4] drm/amd/display: Remove duplicated CalculateWriteBackDISPCLK

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Message-Id: <20220720182228.259119-2-mairacanal@riseup.net>
Date:   Wed, 20 Jul 2022 15:22:26 -0300
From:   Maíra Canal <mairacanal@...eup.net>
To:     Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        Alex Deucher <alexander.deucher@....com>,
        christian.koenig@....com, Xinhui.Pan@....com,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Nicholas Kazlauskas <nicholas.kazlauskas@....com>,
        Dmytro Laktyushkin <Dmytro.Laktyushkin@....com>,
        Aurabindo Pillai <aurabindo.pillai@....com>
Cc:     amd-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        mwen@...lia.com, andrealmeid@...eup.net,
        Isabella Basso <isabbasso@...eup.net>, magalilemes00@...il.com,
        tales.aparecida@...il.com,
        Maíra Canal <mairacanal@...eup.net>
Subject: [PATCH 2/4] drm/amd/display: Remove duplicated CalculateWriteBackDISPCLK

The functions dml30_CalculateWriteBackDISPCLK and
dml31_CalculateWriteBackDISPCLK are identical. Therefor, to avoid
code duplication, dml31_CalculateWriteBackDISPCLK is removed and
replaced by dml30_CalculateWriteBackDISPCLK.

Signed-off-by: Maíra Canal <mairacanal@...eup.net>
---
 .../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