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path: root/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
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Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c')
-rw-r--r--drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c131
1 files changed, 46 insertions, 85 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
index ea661ee44674..260e113fcc02 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
@@ -28,6 +28,17 @@
#include "dml_inline_defs.h"
+/*
+ * NOTE:
+ * This file is gcc-parseable HW gospel, coming straight from HW engineers.
+ *
+ * It doesn't adhere to Linux kernel style and sometimes will do things in odd
+ * ways. Unless there is something clearly wrong with it the code should
+ * remain as-is as it provides us with a guarantee from HW that it is correct.
+ */
+
+#define BPP_INVALID 0
+#define BPP_BLENDED_PIPE 0xffffffff
static const unsigned int NumberOfStates = DC__VOLTAGE_STATES;
static void fetch_socbb_params(struct display_mode_lib *mode_lib);
@@ -587,7 +598,7 @@ static void fetch_pipe_params(struct display_mode_lib *mode_lib)
mode_lib->vba.NumberOfDSCSlices[mode_lib->vba.NumberOfActivePlanes] =
dout->dsc_slices;
mode_lib->vba.DSCInputBitPerComponent[mode_lib->vba.NumberOfActivePlanes] =
- dout->output_bpc == 0 ? 12 : dout->output_bpc;
+ dout->opp_input_bpc == 0 ? 12 : dout->opp_input_bpc;
mode_lib->vba.WritebackEnable[mode_lib->vba.NumberOfActivePlanes] = dout->wb_enable;
mode_lib->vba.WritebackSourceHeight[mode_lib->vba.NumberOfActivePlanes] =
dout->wb.wb_src_height;
@@ -3928,7 +3939,7 @@ static unsigned int TruncToValidBPP(
else if (DecimalBPP >= 12)
return 12;
else
- return 0;
+ return BPP_INVALID;
} else if (Format == dm_444) {
if (DecimalBPP >= 36)
return 36;
@@ -3937,7 +3948,7 @@ static unsigned int TruncToValidBPP(
else if (DecimalBPP >= 24)
return 24;
else
- return 0;
+ return BPP_INVALID;
} else {
if (DecimalBPP / 1.5 >= 24)
return 24;
@@ -3946,27 +3957,27 @@ static unsigned int TruncToValidBPP(
else if (DecimalBPP / 1.5 >= 16)
return 16;
else
- return 0;
+ return BPP_INVALID;
}
} else {
if (DSCEnabled) {
if (Format == dm_420) {
if (DecimalBPP < 6)
- return 0;
+ return BPP_INVALID;
else if (DecimalBPP >= 1.5 * DSCInputBitPerComponent - 1 / 16)
return 1.5 * DSCInputBitPerComponent - 1 / 16;
else
return dml_floor(16 * DecimalBPP, 1) / 16;
} else if (Format == dm_n422) {
if (DecimalBPP < 7)
- return 0;
+ return BPP_INVALID;
else if (DecimalBPP >= 2 * DSCInputBitPerComponent - 1 / 16)
return 2 * DSCInputBitPerComponent - 1 / 16;
else
return dml_floor(16 * DecimalBPP, 1) / 16;
} else {
if (DecimalBPP < 8)
- return 0;
+ return BPP_INVALID;
else if (DecimalBPP >= 3 * DSCInputBitPerComponent - 1 / 16)
return 3 * DSCInputBitPerComponent - 1 / 16;
else
@@ -3980,7 +3991,7 @@ static unsigned int TruncToValidBPP(
else if (DecimalBPP >= 12)
return 12;
else
- return 0;
+ return BPP_INVALID;
} else if (Format == dm_s422 || Format == dm_n422) {
if (DecimalBPP >= 24)
return 24;
@@ -3989,7 +4000,7 @@ static unsigned int TruncToValidBPP(
else if (DecimalBPP >= 16)
return 16;
else
- return 0;
+ return BPP_INVALID;
} else {
if (DecimalBPP >= 36)
return 36;
@@ -3998,7 +4009,7 @@ static unsigned int TruncToValidBPP(
else if (DecimalBPP >= 24)
return 24;
else
- return 0;
+ return BPP_INVALID;
}
}
}
@@ -4922,11 +4933,7 @@ static void ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_
mode_lib->vba.ViewportSizeSupport[i] = true;
for (k = 0; k <= mode_lib->vba.NumberOfActivePlanes - 1; k++) {
if (mode_lib->vba.ODMCombineEnablePerState[i][k] == true) {
- if (dml_min(
- mode_lib->vba.SwathWidthYSingleDPP[k],
- dml_round(
- mode_lib->vba.HActive[k] / 2.0
- * mode_lib->vba.HRatio[k]))
+ if (dml_min(mode_lib->vba.SwathWidthYSingleDPP[k], dml_round(mode_lib->vba.HActive[k] / 2.0 * mode_lib->vba.HRatio[k]))
> mode_lib->vba.MaximumSwathWidth[k]) {
mode_lib->vba.ViewportSizeSupport[i] = false;
}
@@ -4980,12 +4987,8 @@ static void ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_
mode_lib->vba.RequiresDSC[i][k] = 0;
mode_lib->vba.RequiresFEC[i][k] = 0;
mode_lib->vba.OutputBppPerState[i][k] =
- TruncToValidBPP(
- dml_min(
- 600.0,
- mode_lib->vba.PHYCLKPerState[i])
- / mode_lib->vba.PixelClockBackEnd[k]
- * 24,
+ TruncToValidBPP(dml_min(600.0, mode_lib->vba.PHYCLKPerState[i])
+ / mode_lib->vba.PixelClockBackEnd[k] * 24,
false,
mode_lib->vba.Output[k],
mode_lib->vba.OutputFormat[k],
@@ -5000,30 +5003,16 @@ static void ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_
}
if (mode_lib->vba.PHYCLKPerState[i] >= 270.0) {
mode_lib->vba.Outbpp =
- TruncToValidBPP(
- (1.0
- - mode_lib->vba.Downspreading
- / 100.0)
- * 270.0
- * mode_lib->vba.OutputLinkDPLanes[k]
- / mode_lib->vba.PixelClockBackEnd[k]
- * 8.0,
+ TruncToValidBPP((1.0 - mode_lib->vba.Downspreading / 100.0) * 270.0
+ * mode_lib->vba.OutputLinkDPLanes[k] / mode_lib->vba.PixelClockBackEnd[k] * 8.0,
false,
mode_lib->vba.Output[k],
mode_lib->vba.OutputFormat[k],
mode_lib->vba.DSCInputBitPerComponent[k]);
mode_lib->vba.OutbppDSC =
- TruncToValidBPP(
- (1.0
- - mode_lib->vba.Downspreading
- / 100.0)
- * (1.0
- - mode_lib->vba.EffectiveFECOverhead
- / 100.0)
- * 270.0
- * mode_lib->vba.OutputLinkDPLanes[k]
- / mode_lib->vba.PixelClockBackEnd[k]
- * 8.0,
+ TruncToValidBPP((1.0 - mode_lib->vba.Downspreading / 100.0)
+ * (1.0 - mode_lib->vba.EffectiveFECOverhead / 100.0) * 270.0
+ * mode_lib->vba.OutputLinkDPLanes[k] / mode_lib->vba.PixelClockBackEnd[k] * 8.0,
true,
mode_lib->vba.Output[k],
mode_lib->vba.OutputFormat[k],
@@ -5046,32 +5035,18 @@ static void ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_
mode_lib->vba.OutputBppPerState[i][k] =
mode_lib->vba.Outbpp;
}
- if (mode_lib->vba.Outbpp == 0) {
+ if (mode_lib->vba.Outbpp == BPP_INVALID) {
mode_lib->vba.Outbpp =
- TruncToValidBPP(
- (1.0
- - mode_lib->vba.Downspreading
- / 100.0)
- * 540.0
- * mode_lib->vba.OutputLinkDPLanes[k]
- / mode_lib->vba.PixelClockBackEnd[k]
- * 8.0,
+ TruncToValidBPP((1.0 - mode_lib->vba.Downspreading / 100.0) * 540.0
+ * mode_lib->vba.OutputLinkDPLanes[k] / mode_lib->vba.PixelClockBackEnd[k] * 8.0,
false,
mode_lib->vba.Output[k],
mode_lib->vba.OutputFormat[k],
mode_lib->vba.DSCInputBitPerComponent[k]);
mode_lib->vba.OutbppDSC =
- TruncToValidBPP(
- (1.0
- - mode_lib->vba.Downspreading
- / 100.0)
- * (1.0
- - mode_lib->vba.EffectiveFECOverhead
- / 100.0)
- * 540.0
- * mode_lib->vba.OutputLinkDPLanes[k]
- / mode_lib->vba.PixelClockBackEnd[k]
- * 8.0,
+ TruncToValidBPP((1.0 - mode_lib->vba.Downspreading / 100.0)
+ * (1.0 - mode_lib->vba.EffectiveFECOverhead / 100.0) * 540.0
+ * mode_lib->vba.OutputLinkDPLanes[k] / mode_lib->vba.PixelClockBackEnd[k] * 8.0,
true,
mode_lib->vba.Output[k],
mode_lib->vba.OutputFormat[k],
@@ -5094,40 +5069,26 @@ static void ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_
mode_lib->vba.OutputBppPerState[i][k] =
mode_lib->vba.Outbpp;
}
- if (mode_lib->vba.Outbpp == 0
+ if (mode_lib->vba.Outbpp == BPP_INVALID
&& mode_lib->vba.PHYCLKPerState[i]
>= 810.0) {
mode_lib->vba.Outbpp =
- TruncToValidBPP(
- (1.0
- - mode_lib->vba.Downspreading
- / 100.0)
- * 810.0
- * mode_lib->vba.OutputLinkDPLanes[k]
- / mode_lib->vba.PixelClockBackEnd[k]
- * 8.0,
+ TruncToValidBPP((1.0 - mode_lib->vba.Downspreading / 100.0) * 810.0
+ * mode_lib->vba.OutputLinkDPLanes[k] / mode_lib->vba.PixelClockBackEnd[k] * 8.0,
false,
mode_lib->vba.Output[k],
mode_lib->vba.OutputFormat[k],
mode_lib->vba.DSCInputBitPerComponent[k]);
mode_lib->vba.OutbppDSC =
- TruncToValidBPP(
- (1.0
- - mode_lib->vba.Downspreading
- / 100.0)
- * (1.0
- - mode_lib->vba.EffectiveFECOverhead
- / 100.0)
- * 810.0
- * mode_lib->vba.OutputLinkDPLanes[k]
- / mode_lib->vba.PixelClockBackEnd[k]
- * 8.0,
+ TruncToValidBPP((1.0 - mode_lib->vba.Downspreading / 100.0)
+ * (1.0 - mode_lib->vba.EffectiveFECOverhead / 100.0) * 810.0
+ * mode_lib->vba.OutputLinkDPLanes[k] / mode_lib->vba.PixelClockBackEnd[k] * 8.0,
true,
mode_lib->vba.Output[k],
mode_lib->vba.OutputFormat[k],
mode_lib->vba.DSCInputBitPerComponent[k]);
if (mode_lib->vba.DSCEnabled[k] == true
- || mode_lib->vba.Outbpp == 0) {
+ || mode_lib->vba.Outbpp == BPP_INVALID) {
mode_lib->vba.RequiresDSC[i][k] = true;
if (mode_lib->vba.Output[k] == dm_dp) {
mode_lib->vba.RequiresFEC[i][k] =
@@ -5147,14 +5108,14 @@ static void ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_
}
}
} else {
- mode_lib->vba.OutputBppPerState[i][k] = 0;
+ mode_lib->vba.OutputBppPerState[i][k] = BPP_BLENDED_PIPE;
}
}
}
for (i = 0; i <= DC__VOLTAGE_STATES; i++) {
mode_lib->vba.DIOSupport[i] = true;
for (k = 0; k <= mode_lib->vba.NumberOfActivePlanes - 1; k++) {
- if (mode_lib->vba.OutputBppPerState[i][k] == 0
+ if (mode_lib->vba.OutputBppPerState[i][k] == BPP_INVALID
|| (mode_lib->vba.OutputFormat[k] == dm_420
&& mode_lib->vba.ProgressiveToInterlaceUnitInOPP
== true)) {
@@ -5243,8 +5204,8 @@ static void ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_
} else {
mode_lib->vba.slices = 1.0;
}
- if (mode_lib->vba.OutputBppPerState[i][k] == 0
- || mode_lib->vba.OutputBppPerState[i][k] == 0) {
+ if (mode_lib->vba.OutputBppPerState[i][k] == BPP_BLENDED_PIPE
+ || mode_lib->vba.OutputBppPerState[i][k] == BPP_INVALID) {
mode_lib->vba.bpp = 0.0;
} else {
mode_lib->vba.bpp = mode_lib->vba.OutputBppPerState[i][k];
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