Preliminary atomic patch

ui/ozone/platform/drm/gpu/hardware_display_plane_manager_atomic.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_atomic.h"
+
+#include "base/bind.h"
+#include "ui/ozone/platform/drm/gpu/drm_device.h"
+#include "ui/ozone/platform/drm/gpu/hardware_display_plane_atomic.h"
+#include "ui/ozone/platform/drm/gpu/scanout_buffer.h"
+
+namespace ui {
+
+static void AtomicPageFlipCallback(unsigned int /* frame */,
+                                   unsigned int /* seconds */,
+                                   unsigned int /* useconds */) {
+}
+
+HardwareDisplayPlaneManagerAtomic::HardwareDisplayPlaneManagerAtomic() {
+}
+
+HardwareDisplayPlaneManagerAtomic::~HardwareDisplayPlaneManagerAtomic() {
+}
+
+bool HardwareDisplayPlaneManagerAtomic::Commit(
+    HardwareDisplayPlaneList* plane_list,
+    bool is_sync) {
+  for (HardwareDisplayPlane* plane : plane_list->old_plane_list) {
+    bool found =
+        std::find(plane_list->plane_list.begin(), plane_list->plane_list.end(),
+                  plane) != plane_list->plane_list.end();
+    if (!found) {
+      // This plane is being released, so we need to zero it.
+      plane->set_in_use(false);
+      HardwareDisplayPlaneAtomic* atomic_plane =
+          static_cast<HardwareDisplayPlaneAtomic*>(plane);
+      atomic_plane->SetPlaneData(plane_list->atomic_property_set.get(), 0, 0,
+                                 gfx::Rect(), gfx::Rect());
+    }
+  }
+
+  plane_list->plane_list.swap(plane_list->old_plane_list);
+  plane_list->plane_list.clear();
+  if (!drm_->CommitProperties(plane_list->atomic_property_set.get(), 0,
+                              base::Bind(&AtomicPageFlipCallback))) {
+    PLOG(ERROR) << "Failed to commit properties";
+    return false;
+  }
+  return true;
+}
+
+bool HardwareDisplayPlaneManagerAtomic::AssignOverlayPlanes(
+    HardwareDisplayPlaneList* plane_list,
+    const OverlayPlaneList& overlay_list,
+    uint32_t crtc_id,
+    CrtcController* crtc) {
+  // Lazy-initialize the atomic property set.
+  if (!plane_list->atomic_property_set)
+    plane_list->atomic_property_set.reset(drmModePropertySetAlloc());
+  return HardwareDisplayPlaneManager::AssignOverlayPlanes(
+      plane_list, overlay_list, crtc_id, crtc);
+}
+
+bool HardwareDisplayPlaneManagerAtomic::SetPlaneData(
+    HardwareDisplayPlaneList* plane_list,
+    HardwareDisplayPlane* hw_plane,
+    const OverlayPlane& overlay,
+    uint32_t crtc_id,
+    const gfx::Rect& src_rect,
+    CrtcController* crtc) {
+  HardwareDisplayPlaneAtomic* atomic_plane =
+      static_cast<HardwareDisplayPlaneAtomic*>(hw_plane);
+  if (!atomic_plane->SetPlaneData(plane_list->atomic_property_set.get(),
+                                  crtc_id, overlay.buffer->GetFramebufferId(),
+                                  overlay.display_bounds, src_rect)) {
+    LOG(ERROR) << "Failed to set plane properties";
+    return false;
+  }
+  plane_list->plane_list.push_back(hw_plane);
+  return true;
+}
+
+scoped_ptr<HardwareDisplayPlane> HardwareDisplayPlaneManagerAtomic::CreatePlane(
+    uint32_t plane_id,
+    uint32_t possible_crtcs) {
+  return scoped_ptr<HardwareDisplayPlane>(
+      new HardwareDisplayPlaneAtomic(plane_id, possible_crtcs));
+}
+
+}  // namespace ui