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drm/amd/display: Add check for PState change in DCN32

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For pstate change, allow DML to loop through
all possible prefetch combinations so as to
support more display configurations. Set the max
and min prefetch modes to enable the sequence.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Aurabindo Pillai 2023-04-06 16:19:16 -04:00 committed by Alex Deucher
parent a1f1fecd04
commit 974ce18160
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c
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@ -4656,6 +4656,10 @@ void dml32_CalculateMinAndMaxPrefetchMode(
} else if (AllowForPStateChangeOrStutterInVBlankFinal == dm_prefetch_support_uclk_fclk_and_stutter) {
*MinPrefetchMode = 0;
*MaxPrefetchMode = 0;
} else if (AllowForPStateChangeOrStutterInVBlankFinal ==
dm_prefetch_support_uclk_fclk_and_stutter_if_possible) {
*MinPrefetchMode = 0;
*MaxPrefetchMode = 3;
} else {
*MinPrefetchMode = 0;
*MaxPrefetchMode = 3;