Commit 3eb4eba4 authored Oct 20, 2017 by Roman Li Committed by Alex Deucher Nov 28, 2017

drm/amd/display: Fix S3 topology change



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>

parent 6bffebc9

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

+4 −0

Original line number	Diff line number	Diff line
		@@ -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);

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