This is a note to let you know that I've just added the patch titled
drm/amd/display: Use forced DSC bpp in DML
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-use-forced-dsc-bpp-in-dml.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4ca1726ca1e69ca45b7bb2ca3361bdc5e6a1c11f
Author: George Shen <george.shen@xxxxxxx>
Date: Fri Oct 14 17:36:32 2022 -0400
drm/amd/display: Use forced DSC bpp in DML
[ Upstream commit ab007e5db5d3b8b8975c7eec69992ff38fe2a46c ]
[Why]
DSC config is calculated separately from DML calculations.
DML should use these separately calculated DSC params. The issue is
that the calculated bpp is not properly propagated into DML.
[How]
Correctly used forced_bpp value in DML.
Reviewed-by: Alvin Lee <Alvin.Lee2@xxxxxxx>
Acked-by: Alex Hung <alex.hung@xxxxxxx>
Signed-off-by: George Shen <george.shen@xxxxxxx>
Tested-by: Mark Broadworth <mark.broadworth@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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 52525833a99b..6704465fe5b6 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
@@ -1627,7 +1627,7 @@ static void mode_support_configuration(struct vba_vars_st *v,
&& !mode_lib->vba.MSOOrODMSplitWithNonDPLink
&& !mode_lib->vba.NotEnoughLanesForMSO
&& mode_lib->vba.LinkCapacitySupport[i] == true && !mode_lib->vba.P2IWith420
- && !mode_lib->vba.DSCOnlyIfNecessaryWithBPP
+ //&& !mode_lib->vba.DSCOnlyIfNecessaryWithBPP
&& !mode_lib->vba.DSC422NativeNotSupported
&& !mode_lib->vba.MPCCombineMethodIncompatible
&& mode_lib->vba.ODMCombine2To1SupportCheckOK[i] == true
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 503e7d984ff0..cb34ac0af349 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
@@ -624,7 +624,7 @@ static void fetch_pipe_params(struct display_mode_lib *mode_lib)
mode_lib->vba.skip_dio_check[mode_lib->vba.NumberOfActivePlanes] =
dout->is_virtual;
- if (!dout->dsc_enable)
+ if (dout->dsc_enable)
mode_lib->vba.ForcedOutputLinkBPP[mode_lib->vba.NumberOfActivePlanes] = dout->output_bpp;
else
mode_lib->vba.ForcedOutputLinkBPP[mode_lib->vba.NumberOfActivePlanes] = 0.0;
