From 3eb4eba42263cc1e810d79b4970cbcb096c210ab Mon Sep 17 00:00:00 2001 From: Roman Li Date: Fri, 20 Oct 2017 10:15:18 -0400 Subject: [PATCH] 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 Reviewed-by: Sun peng Li Acked-by: Harry Wentland Reviewed-by: Andrey Grodzovsky Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++++ 1 file changed, 4 insertions(+) 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 889ed24084e8..009aaeb263e3 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -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); -- GitLab