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drm/amd/display: should support dmub hw lock on Replay

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[Why]
Without acquiring DMCUB hw lock, a race condition is caused with
Panel Replay feature, which will trigger a hang. Indicate that a
lock is necessary to prevent this when replay feature is enabled.

[How]
To allow dmub hw lock on Replay.

Reviewed-by: Robin Chen <robin.chen@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Martin Tsai <martin.tsai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Martin Tsai 2024-02-02 14:39:29 +08:00 committed by Alex Deucher
parent ae3986e727
commit bfeefe6ea5
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
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@ -65,5 +65,9 @@ bool should_use_dmub_lock(struct dc_link *link)
{
if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1)
return true;
if (link->replay_settings.replay_feature_enabled)
return true;
return false;
}