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| author | Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> | 2021-11-09 00:49:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-01 11:04:51 +0300 |
| commit | 4da564004a73601e67ea609fed760f00d0682210 (patch) | |
| tree | 67b878a612d373d1bf125cf16097a13f33a267ae /drivers/gpu/drm/amd/display | |
| parent | c83f27576c46bc8071141a67aa8adb471ec9bac5 (diff) | |
| download | linux-4da564004a73601e67ea609fed760f00d0682210.tar.xz | |
drm/amd/display: Fix DPIA outbox timeout after GPU reset
[ Upstream commit 6eff272dbee7ad444c491c9a96d49e78e91e2161 ]
[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: 81927e2808be ("drm/amd/display: Support for DMUB AUX")
Reviewed-by: Jude Shih <Jude.Shih@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/amd/display')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index d15967239474..56f4569da2f7 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2213,6 +2213,8 @@ 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); |