| Saurabh Shah | 7d476ed | 2016-06-27 16:40:58 -0700 | [diff] [blame] | 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__ |