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Merge tag 'topic/mst-suspend-resume-reprobe-2019-10-29-2' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

Browse Source 
UAPI Changes:

Cross-subsystem Changes:

Core Changes:
* Handle UP requests asynchronously in the DP MST helpers, fixing
  hotplug notifications and allowing us to implement suspend/resume
  reprobing
* Add basic suspend/resume reprobing to the DP MST helpers
* Improve locking for link address reprobing and connection status
  request handling in the DP MST helpers
* Miscellaneous refactoring in the DP MST helpers
* Add a Kconfig option to the DP MST helpers to enable tracking of
  gets/puts for topology references for debugging purposes

Driver Changes:
* nouveau: Resume hotplug interrupts earlier, so that sideband
  messages may be transmitted during resume and thus allow
  suspend/resume reprobing for DP MST to work
* nouveau: Avoid grabbing runtime PM references when handling short DP
  pulses, so that handling sideband messages in resume codepaths with the
  DP MST helpers doesn't deadlock us
* i915, nouveau, amdgpu, radeon: Use detect_ctx for probing MST
  connectors, so that we can grab the topology manager's atomic lock

Note: there's some amdgpu patches that I didn't realize were pushed
upstream already when creating this topic branch. When they fail to
apply, you can just ignore and skip them.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/a74c6446bc960190d195a751cb6d8a00a98f3974.camel@redhat.com
This commit is contained in:
Dave Airlie
2019-10-30 09:01:28 +10:00
parent 8c84b43f17 12a280c728
commit 57c2af791b
11 changed files with 1129 additions and 406 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@@ -1028,7 +1028,7 @@ static void s3_handle_mst(struct drm_device *dev, bool suspend)
if (suspend) {
drm_dp_mst_topology_mgr_suspend(mgr);
} else {
ret = drm_dp_mst_topology_mgr_resume(mgr);
ret = drm_dp_mst_topology_mgr_resume(mgr, true);
if (ret < 0) {
drm_dp_mst_topology_mgr_set_mst(mgr, false);
need_hotplug = true;
@@ -1246,7 +1246,7 @@ static int dm_resume(void *handle)
*/
amdgpu_dm_irq_resume_early(adev);
/* On resume we need to rewrite the MSTM control bits to enable MST*/
/* On resume we need to rewrite the MSTM control bits to enable MST*/
s3_handle_mst(ddev, false);
/* Do detection*/