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drm/amd/display: Account for cursor prefetch BW in DML1 mode support

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[ Upstream commit 074b3a886713f69d98d30bb348b1e4cb3ce52b22 ]

[Description]
We need to ensure to take into account cursor prefetch BW in
mode support or we may pass ModeQuery but fail an actual flip
which will cause a hang. Flip may fail because the cursor_pre_bw
is populated during mode programming (and mode programming is
never called prior to ModeQuery).

Reviewed-by: Chaitanya Dhere <chaitanya.dhere@amd.com>
Reviewed-by: Nevenko Stupar <nevenko.stupar@amd.com>
Signed-off-by: Jerry Zuo <jerry.zuo@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alvin Lee
2024-06-20 15:11:38 -04:00
committed by Greg Kroah-Hartman
parent e424638474
commit bcb6497188
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
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@@ -3338,6 +3338,9 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
&mode_lib->vba.UrgentBurstFactorLumaPre[k], &mode_lib->vba.UrgentBurstFactorLumaPre[k],
&mode_lib->vba.UrgentBurstFactorChromaPre[k], &mode_lib->vba.UrgentBurstFactorChromaPre[k],
&mode_lib->vba.NotUrgentLatencyHidingPre[k]); &mode_lib->vba.NotUrgentLatencyHidingPre[k]);
v->cursor_bw_pre[k] = mode_lib->vba.NumberOfCursors[k] * mode_lib->vba.CursorWidth[k][0] * mode_lib->vba.CursorBPP[k][0] /
8.0 / (mode_lib->vba.HTotal[k] / mode_lib->vba.PixelClock[k]) * v->VRatioPreY[i][j][k];
} }
{ {