From: Chris Park <chris.park@xxxxxxx>
[Why]
420 modes are limited by FMT buffer width of 4096
which requires multi-pipe support in form of ODM
combine. If 420 modes have greater HActive than
4096, the DML logic should accomodate whether
it should be rejected, or ODM combine 2:1 or 4:1
is triggered accordingly.
[How]
FMT Buffer limit of 4096 in DCN32. Force ODM
combine depending on HActive and FMT Buffer limit.
Reject modes if TMDS 420 and above 4096.
Acked-by: Wayne Lin <wayne.lin@xxxxxxx>
Signed-off-by: Chris Park <chris.park@xxxxxxx>
---
.../dc/dml/dcn32/display_mode_vba_32.c | 2 ++
.../dc/dml/dcn32/display_mode_vba_util_32.c | 26 +++++++++++++++++++
.../dc/dml/dcn32/display_mode_vba_util_32.h | 1 +
3 files changed, 29 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
index ad100658132f..75be1e1ce543 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
@@ -1992,6 +1992,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
dml32_CalculateODMMode(
mode_lib->vba.MaximumPixelsPerLinePerDSCUnit,
mode_lib->vba.HActive[k],
+ mode_lib->vba.OutputFormat[k],
mode_lib->vba.Output[k],
mode_lib->vba.ODMUse[k],
mode_lib->vba.MaxDispclk[i],
@@ -2014,6 +2015,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
dml32_CalculateODMMode(
mode_lib->vba.MaximumPixelsPerLinePerDSCUnit,
mode_lib->vba.HActive[k],
+ mode_lib->vba.OutputFormat[k],
mode_lib->vba.Output[k],
mode_lib->vba.ODMUse[k],
mode_lib->vba.MaxDispclk[i],
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
index 5b5b94f1024d..ad66e241f9ae 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
@@ -27,6 +27,8 @@
#include "display_mode_vba_32.h"
#include "../display_mode_lib.h"
+#define DCN32_MAX_FMT_420_BUFFER_WIDTH 4096
+
unsigned int dml32_dscceComputeDelay(
unsigned int bpc,
double BPP,
@@ -1179,6 +1181,7 @@ void dml32_CalculateDETBufferSize(
void dml32_CalculateODMMode(
unsigned int MaximumPixelsPerLinePerDSCUnit,
unsigned int HActive,
+ enum output_format_class OutFormat,
enum output_encoder_class Output,
enum odm_combine_policy ODMUse,
double StateDispclk,
@@ -1253,6 +1256,29 @@ void dml32_CalculateODMMode(
else
*TotalAvailablePipesSupport = false;
}
+ if (OutFormat == dm_420 && HActive > DCN32_MAX_FMT_420_BUFFER_WIDTH &&
+ ODMUse != dm_odm_combine_policy_4to1) {
+ if (HActive > DCN32_MAX_FMT_420_BUFFER_WIDTH * 4) {
+ *ODMMode = dm_odm_combine_mode_disabled;
+ *NumberOfDPP = 0;
+ *TotalAvailablePipesSupport = false;
+ } else if (HActive > DCN32_MAX_FMT_420_BUFFER_WIDTH * 2 ||
+ *ODMMode == dm_odm_combine_mode_4to1) {
+ *ODMMode = dm_odm_combine_mode_4to1;
+ *RequiredDISPCLKPerSurface = SurfaceRequiredDISPCLKWithODMCombineFourToOne;
+ *NumberOfDPP = 4;
+ } else {
+ *ODMMode = dm_odm_combine_mode_2to1;
+ *RequiredDISPCLKPerSurface = SurfaceRequiredDISPCLKWithODMCombineTwoToOne;
+ *NumberOfDPP = 2;
+ }
+ }
+ if (Output == dm_hdmi && OutFormat == dm_420 &&
+ HActive > DCN32_MAX_FMT_420_BUFFER_WIDTH) {
+ *ODMMode = dm_odm_combine_mode_disabled;
+ *NumberOfDPP = 0;
+ *TotalAvailablePipesSupport = false;
+ }
}
double dml32_CalculateRequiredDispclk(
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
index 3dbc9cf46aad..55cead0d4237 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h
@@ -216,6 +216,7 @@ void dml32_CalculateDETBufferSize(
void dml32_CalculateODMMode(
unsigned int MaximumPixelsPerLinePerDSCUnit,
unsigned int HActive,
+ enum output_format_class OutFormat,
enum output_encoder_class Output,
enum odm_combine_policy ODMUse,
double StateDispclk,
--
2.37.3
