1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef UPDATER_UI_DRM_DRIVER_H 17 #define UPDATER_UI_DRM_DRIVER_H 18 #include <cerrno> 19 #include <cstdio> 20 #include <cstdlib> 21 #include <cstring> 22 #include <drm_fourcc.h> 23 #include <fcntl.h> 24 #include <linux/fb.h> 25 #include <poll.h> 26 #include <sys/mman.h> 27 #include <xf86drm.h> 28 #include <xf86drmMode.h> 29 30 namespace updater { 31 struct BufferObject { 32 uint32_t width; 33 uint32_t height; 34 uint32_t pitch; 35 uint32_t handle; 36 uint32_t size; 37 uint8_t *vaddr; 38 uint32_t fbId; 39 }; 40 41 class DrmDriver { 42 protected: DrmDriver()43 DrmDriver() : fd_(-1), conn_(nullptr), res_(nullptr) {} 44 virtual ~DrmDriver(); 45 void FlipBuffer(const void* buf); 46 void LoadDrmDriver(); 47 private: 48 int ModesetCreateFb(struct BufferObject *bo); 49 void ModesetDestroyFb(struct BufferObject *bo); 50 int DrmInit(); 51 int fd_; 52 drmModeConnector *conn_; 53 drmModeRes *res_; 54 struct BufferObject buff_ {}; 55 }; 56 } // namespace updater 57 #endif 58