[PATCH 12/15] drm/amd/display: should support dmub hw lock on Replay

[Aurabindo Pillai]

From: Martin Tsai <martin.tsai at amd.com>

[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 at amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
Signed-off-by: Martin Tsai <martin.tsai at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
index ba1fec3016d5..bf636b28e3e1 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
@@ -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;
 }
-- 
2.43.0