[Ozone-DRM] Use CRTC's mode when configuring it for mirror mode

ui/ozone/platform/drm/gpu/hardware_display_controller.h

 // 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.
 
 #ifndef UI_OZONE_PLATFORM_DRM_GPU_HARDWARE_DISPLAY_CONTROLLER_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_HARDWARE_DISPLAY_CONTROLLER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <xf86drmMode.h>
@@ skipping 80 matching lines @@
 
  public:
   HardwareDisplayController(scoped_ptr<CrtcController> controller,
                             const gfx::Point& origin);
   ~HardwareDisplayController();
 
   // Performs the initial CRTC configuration. If successful, it will display the
   // framebuffer for |primary| with |mode|.
   bool Modeset(const OverlayPlane& primary, drmModeModeInfo mode);
 
+  // Performs a CRTC configuration re-using the modes from the CRTCs.
+  bool Enable(const OverlayPlane& primary);
+
   // Disables the CRTC.
   void Disable();
 
   // Schedules the |overlays|' framebuffers to be displayed on the next vsync
   // event. The event will be posted on the graphics card file descriptor |fd_|
   // and it can be read and processed by |drmHandleEvent|. That function can
   // define the callback for the page flip event. A generic data argument will
   // be presented to the callback. We use that argument to pass in the HDCO
   // object the event belongs to.
   //
@@ skipping 29 matching lines @@
   scoped_ptr<CrtcController> RemoveCrtc(const scoped_refptr<DrmDevice>& drm,
                                         uint32_t crtc);
   bool HasCrtc(const scoped_refptr<DrmDevice>& drm, uint32_t crtc) const;
   bool IsMirrored() const;
   bool IsDisabled() const;
   gfx::Size GetModeSize() const;
 
   gfx::Point origin() const { return origin_; }
   void set_origin(const gfx::Point& origin) { origin_ = origin; }
 
-  const drmModeModeInfo& get_mode() const { return mode_; };
-
   uint64_t GetTimeOfLastFlip() const;
 
   const std::vector<CrtcController*>& crtc_controllers() const {
     return crtc_controllers_.get();
   }
 
   scoped_refptr<DrmDevice> GetAllocationDrmDevice() const;
 
  private:
   base::ScopedPtrHashMap<DrmDevice*, scoped_ptr<HardwareDisplayPlaneList>>
       owned_hardware_planes_;
 
   // Stores the CRTC configuration. This is used to identify monitors and
   // configure them.
   ScopedVector<CrtcController> crtc_controllers_;
 
   // Location of the controller on the screen.
   gfx::Point origin_;
 
-  // The mode used by the last modesetting operation.
-  drmModeModeInfo mode_;
-
   bool is_disabled_;
 
   DISALLOW_COPY_AND_ASSIGN(HardwareDisplayController);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_HARDWARE_DISPLAY_CONTROLLER_H_