1 /* 2 * Copyright (c) 2017, The Linux Foundation. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 13 * * Neither the name of The Linux Foundation nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef __DRM_RES_MGR_H__ 31 #define __DRM_RES_MGR_H__ 32 33 #include <xf86drm.h> 34 #include <xf86drmMode.h> 35 36 #include <mutex> 37 38 namespace drm_utils { 39 40 class DRMResMgr { 41 public: 42 /* Returns the default connector id for primary panel */ 43 void GetConnectorId(uint32_t *id) { *id = conn_->connector_id; } 44 /* Returns the default crtc id for primary pipeline */ 45 void GetCrtcId(uint32_t *id) { *id = crtc_->crtc_id; } 46 /* Returns the default mode currently used by the connector */ 47 void GetMode(drmModeModeInfo *mode) { *mode = conn_->modes[0]; } 48 /* Returns the panel dimensions in mm */ 49 void GetDisplayDimInMM(uint32_t *w, uint32_t *h) { 50 *w = conn_->mmWidth; 51 *h = conn_->mmHeight; 52 } 53 54 /* Creates and initializes an instance of DRMResMgr. On success, returns a pointer to it, on 55 * failure returns -ENODEV */ 56 static int GetInstance(DRMResMgr **res_mgr); 57 58 private: 59 int Init(); 60 61 drmModeRes *res_ = nullptr; 62 drmModeConnector *conn_ = nullptr; 63 drmModeEncoder *enc_ = nullptr; 64 drmModeCrtc *crtc_ = nullptr; 65 66 static DRMResMgr *s_instance; 67 static std::mutex s_lock; 68 }; 69 70 } // namespace drm_utils 71 72 #endif // __DRM_RES_MGR_H__ 73
