Commit 6eff272d authored by Nicholas Kazlauskas's avatar Nicholas Kazlauskas Committed by Alex Deucher
Browse files

drm/amd/display: Fix DPIA outbox timeout after GPU reset 



[Why]
The HW interrupt gets disabled after GPU reset so we don't receive
notifications for HPD or AUX from DMUB - leading to timeout and
black screen with (or without) DPIA links connected.

[How]
Re-enable the interrupt after GPU reset like we do for the other
DC interrupts.

Fixes: 81927e28 ("drm/amd/display: Support for DMUB AUX")

Reviewed-by: default avatarJude Shih <Jude.Shih@amd.com>
Acked-by: default avatarQingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: default avatarNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 4eb6bb64

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+2 −0
Original line number Diff line number Diff line
@@ -2561,6 +2561,8 @@ static int dm_resume(void *handle) 
	if (amdgpu_in_reset(adev)) {

		dc_state = dm->cached_dc_state;



		amdgpu_dm_outbox_init(adev);



		r = dm_dmub_hw_init(adev);

		if (r)

			DRM_ERROR("DMUB interface failed to initialize: status=%d\n", r);