1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _GRAPHICS_DRM_H_ 18 #define _GRAPHICS_DRM_H_ 19 20 #include <stdint.h> 21 22 #include <xf86drmMode.h> 23 24 #include "graphics.h" 25 #include "minui/minui.h" 26 27 class GRSurfaceDrm : public GRSurface { 28 private: 29 uint32_t fb_id; 30 uint32_t handle; 31 32 friend class MinuiBackendDrm; 33 }; 34 35 class MinuiBackendDrm : public MinuiBackend { 36 public: 37 GRSurface* Init() override; 38 GRSurface* Flip() override; 39 void Blank(bool) override; 40 ~MinuiBackendDrm() override; 41 MinuiBackendDrm(); 42 43 private: 44 void DrmDisableCrtc(int drm_fd, drmModeCrtc* crtc); 45 void DrmEnableCrtc(int drm_fd, drmModeCrtc* crtc, GRSurfaceDrm* surface); 46 GRSurfaceDrm* DrmCreateSurface(int width, int height); 47 void DrmDestroySurface(GRSurfaceDrm* surface); 48 void DisableNonMainCrtcs(int fd, drmModeRes* resources, drmModeCrtc* main_crtc); 49 drmModeConnector* FindMainMonitor(int fd, drmModeRes* resources, uint32_t* mode_index); 50 51 GRSurfaceDrm* GRSurfaceDrms[2]; 52 int current_buffer; 53 drmModeCrtc* main_monitor_crtc; 54 drmModeConnector* main_monitor_connector; 55 int drm_fd; 56 }; 57 58 #endif // _GRAPHICS_DRM_H_ 59