github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-10-28 09:35:02 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/amd/display: disable self-refresh on tearing flips

Browse Source 
[Why & How]

Immediate (tearing) flips breaks self refresh state machine assumptions,
so disable PSR/Replay for them.

Tested-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit acbdd213b3)
Cc: stable@vger.kernel.org
This commit is contained in:
Leo Li 2026-09-30 12:30:52 -04:00 committed by Alex Deucher
parent 76ceb6ed61
commit 2e54a92e01
1 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -3708,6 +3708,13 @@ static void amdgpu_dm_enable_self_refresh(struct amdgpu_display_manager *dm,
struct amdgpu_dm_connector *aconn =
(struct amdgpu_dm_connector *)acrtc_state->stream->dm_stream_context;
if (!acrtc_state->base.async_flip) {
amdgpu_dm_psr_set_event(dm, acrtc_state->stream, false,
psr_event_immediate_flip, false);
amdgpu_dm_replay_set_event(dm, acrtc_state->stream, false,
replay_event_immediate_flip, false);
}
/* Decrement skip count when SR is enabled and we're doing fast updates. */
if (acrtc_state->update_type == UPDATE_TYPE_FAST &&
(psr->psr_feature_enabled || pr->replay_feature_enabled)) {
@ -4118,6 +4125,18 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_commit *state,
spin_unlock_irqrestore(&pcrtc->dev->event_lock, flags);
}
mutex_lock(&dm->dc_lock);
/*
* Tearing (immediate) flips cannot work with panel self-refresh
* features. The event is cleared by
* amdgpu_dm_enable_self_refresh() once async flips stop.
*/
if (immediate_flip) {
dc_exit_ips_for_hw_access(dm->dc);
amdgpu_dm_psr_set_event(dm, acrtc_state->stream, true,
psr_event_immediate_flip, true);
amdgpu_dm_replay_set_event(dm, acrtc_state->stream, true,
replay_event_immediate_flip, true);
}
update_planes_and_stream_adapter(dm->dc,
acrtc_state->update_type,
planes_count,