ozone: Add ability to set clinet capabilities which we will need for atomic

ui/ozone/platform/drm/gpu/hardware_display_plane_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/ozone/platform/drm/gpu/hardware_display_plane_manager.h"
 
 #include <drm.h>
 #include <xf86drm.h>
 
 #include <set>
@@ skipping 49 matching lines @@
 }
 
 HardwareDisplayPlaneManager::HardwareDisplayPlaneManager() : drm_(nullptr) {
 }
 
 HardwareDisplayPlaneManager::~HardwareDisplayPlaneManager() {
 }
 
 bool HardwareDisplayPlaneManager::Initialize(DrmDevice* drm) {
   drm_ = drm;
+
+  // Try to get all of the planes if possible, so we don't have to try to
+  // discover hidden primary planes.
+  bool has_universal_planes = false;
+#if defined(DRM_CLIENT_CAP_UNIVERSAL_PLANES)
+  has_universal_planes = drm->SetCapability(DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
+#endif  // defined(DRM_CLIENT_CAP_UNIVERSAL_PLANES)
+
   ScopedDrmResourcesPtr resources(drmModeGetResources(drm->get_fd()));
   if (!resources) {
     PLOG(ERROR) << "Failed to get resources";
     return false;
   }
 
   ScopedDrmPlaneResPtr plane_resources(drmModeGetPlaneResources(drm->get_fd()));
   if (!plane_resources) {
     PLOG(ERROR) << "Failed to get plane resources";
     return false;
@@ skipping 17 matching lines @@
     scoped_ptr<HardwareDisplayPlane> plane(
         CreatePlane(drm_plane->plane_id, drm_plane->possible_crtcs));
     if (plane->Initialize(drm))
       planes_.push_back(plane.release());
   }
 
   // crbug.com/464085: if driver reports no primary planes for a crtc, create a
   // dummy plane for which we can assign exactly one overlay.
   // TODO(dnicoara): refactor this to simplify AssignOverlayPlanes and move
   // this workaround into HardwareDisplayPlaneLegacy.
-  for (int i = 0; i < resources->count_crtcs; ++i) {
-    if (plane_ids.find(resources->crtcs[i] - 1) == plane_ids.end()) {
-      scoped_ptr<HardwareDisplayPlane> dummy_plane(
-          CreatePlane(resources->crtcs[i] - 1, (1 << i)));
-      dummy_plane->set_is_dummy(true);
-      if (dummy_plane->Initialize(drm))
-        planes_.push_back(dummy_plane.release());
+  if (!has_universal_planes) {
+    for (int i = 0; i < resources->count_crtcs; ++i) {
+      if (plane_ids.find(resources->crtcs[i] - 1) == plane_ids.end()) {
+        scoped_ptr<HardwareDisplayPlane> dummy_plane(
+            CreatePlane(resources->crtcs[i] - 1, (1 << i)));
+        dummy_plane->set_is_dummy(true);
+        if (dummy_plane->Initialize(drm))
+          planes_.push_back(dummy_plane.release());
+      }
     }
   }
 
   std::sort(planes_.begin(), planes_.end(),
             [](HardwareDisplayPlane* l, HardwareDisplayPlane* r) {
               return l->plane_id() < r->plane_id();
             });
   return true;
 }
 
@@ skipping 89 matching lines @@
     if (plane->owning_crtc() == crtc_id) {
       plane->set_owning_crtc(0);
       plane->set_in_use(false);
     } else {
       plane_list->old_plane_list.push_back(plane);
     }
   }
 }
 
 }  // namespace ui