From 5d8e06a3b7b2a1edecd47ddb3670c63fedf55c72 Mon Sep 17 00:00:00 2001 From: "Jerry (Fangzhi) Zuo" Date: Tue, 30 Oct 2018 14:37:16 -0400 Subject: drm/amd/display: Drop reusing drm connector for MST [why] It is not safe to keep existing connector while entire topology has been removed. Could lead potential impact to uapi. Entirely unregister all the connectors on the topology, and use a new set of connectors when the topology is plugged back on. [How] Remove the drm connector entirely each time when the corresponding MST topology is gone. When hotunplug a connector (e.g., DP2) 1. Remove connector from userspace. 2. Drop it's reference. When hotplug back on: 1. Detect new topology, and create new connectors. 2. Notify userspace with sysfs hotplug event. 3. Reprobe new connectors, and reassign CRTC from old (e.g., DP2) to new (e.g., DP3) connector. Signed-off-by: Jerry (Fangzhi) Zuo Reviewed-by: Harry Wentland Reviewed-by: Lyude Paul Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index 7e0288916f6d..d6960644d714 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -208,8 +208,6 @@ struct amdgpu_dm_connector { struct mutex hpd_lock; bool fake_enable; - - bool mst_connected; }; #define to_amdgpu_dm_connector(x) container_of(x, struct amdgpu_dm_connector, base) -- cgit v1.2.3