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drm/amd/display: Fix S3 topology change

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Clean fake sink flag on resume if real sink connected.
Fixing S3 topology change problem like this:
1) x desktop with 1 or > displays
2) unplug display
3) suspend
4) replug same display
5) resume
without this change replugged display doesn't light up

Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Roman Li 2017-10-20 10:15:18 -04:00 committed by Alex Deucher
parent 6bffebc90c
commit 3eb4eba422
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -677,6 +677,10 @@ int amdgpu_dm_display_resume(struct amdgpu_device *adev)
mutex_lock(&aconnector->hpd_lock);
dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD);
if (aconnector->fake_enable && aconnector->dc_link->local_sink)
aconnector->fake_enable = false;
aconnector->dc_sink = NULL;
amdgpu_dm_update_connector_after_detect(aconnector);
mutex_unlock(&aconnector->hpd_lock);