Atomic: Don’t keep track of Cursor planes

ui/ozone/platform/drm/gpu/hardware_display_plane.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.h"
 
+#include <drm_fourcc.h>
+
 #include "base/logging.h"
 #include "ui/ozone/platform/drm/gpu/drm_device.h"
 
+#ifndef DRM_PLANE_TYPE_OVERLAY
+#define DRM_PLANE_TYPE_OVERLAY 0
+#endif
+
+#ifndef DRM_PLANE_TYPE_PRIMARY
+#define DRM_PLANE_TYPE_PRIMARY 1
+#endif
+
+#ifndef DRM_PLANE_TYPE_CURSOR
+#define DRM_PLANE_TYPE_CURSOR 2
+#endif
+
 namespace ui {
 
+namespace {
+
+const char* kTypePropName = "type";
+HardwareDisplayPlane::Type GetPlaneType(int value) {
+  switch (value) {
+    case DRM_PLANE_TYPE_CURSOR:
+      return HardwareDisplayPlane::kCursor;
+    case DRM_PLANE_TYPE_PRIMARY:
+      return HardwareDisplayPlane::kPrimary;
+    case DRM_PLANE_TYPE_OVERLAY:
+      return HardwareDisplayPlane::kOverlay;
+    default:
+      NOTREACHED();
+      return HardwareDisplayPlane::kDummy;
+  }
+}
+
+}  // namespace
+
 HardwareDisplayPlane::HardwareDisplayPlane(uint32_t plane_id,
                                            uint32_t possible_crtcs)
     : plane_id_(plane_id), possible_crtcs_(possible_crtcs) {
 }
 
 HardwareDisplayPlane::~HardwareDisplayPlane() {
 }
 
 bool HardwareDisplayPlane::CanUseForCrtc(uint32_t crtc_index) {
   return possible_crtcs_ & (1 << crtc_index);
 }
 
 bool HardwareDisplayPlane::Initialize(DrmDevice* drm,
-                                      const std::vector<uint32_t>& formats) {
-  return true;
+                                      const std::vector<uint32_t>& formats,
+                                      bool is_dummy) {
+  if (is_dummy) {
+    type_ = kDummy;
+    supported_formats_.push_back(DRM_FORMAT_XRGB8888);
+    return true;
+  }
+
+  supported_formats_ = formats;
+
+  ScopedDrmObjectPropertyPtr plane_props(drmModeObjectGetProperties(
+      drm->get_fd(), plane_id_, DRM_MODE_OBJECT_PLANE));
+  if (!plane_props) {
+    PLOG(ERROR) << "Unable to get plane properties.";
+    return false;
+  }
+
+  uint32_t count_props = plane_props->count_props;
+  for (uint32_t i = 0; i < count_props; i++) {
+    ScopedDrmPropertyPtr property(
+        drmModeGetProperty(drm->get_fd(), plane_props->props[i]));
+    if (property && !strcmp(property->name, kTypePropName)) {
+      type_ = GetPlaneType(plane_props->prop_values[i]);
+    }
+  }
+
+  return InitializeProperties(drm, plane_props);
 }
 
 bool HardwareDisplayPlane::IsSupportedFormat(uint32_t format) const {
   return true;
 }
 
+bool HardwareDisplayPlane::InitializeProperties(
+    DrmDevice* drm,
+    const ScopedDrmObjectPropertyPtr& plane_props) {
+  return true;
+}
+
 }  // namespace ui