1 /* 2 * Copyright (C) 2015 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 ANDROID_DRM_MODE_H_ 18 #define ANDROID_DRM_MODE_H_ 19 20 #include <stdint.h> 21 #include <xf86drmMode.h> 22 23 #include <ratio> 24 #include <string> 25 26 // Alternative definitions(alias) of DRM modes and flags for VRR. 27 // The kernel contains corresponding defines that MUST align with those specified here.. 28 #define DRM_MODE_TYPE_VRR DRM_MODE_TYPE_USERDEF 29 #define DRM_MODE_FLAG_NS DRM_MODE_FLAG_CLKDIV2 30 #define DRM_MODE_FLAG_TE_FREQ_X1 DRM_MODE_FLAG_PHSYNC 31 #define DRM_MODE_FLAG_TE_FREQ_X2 DRM_MODE_FLAG_NHSYNC 32 #define DRM_MODE_FLAG_TE_FREQ_X4 DRM_MODE_FLAG_PVSYNC 33 34 // BTS needs to take operation rate into account 35 #define DRM_MODE_FLAG_BTS_OP_RATE DRM_MODE_FLAG_NVSYNC 36 37 #define PANEL_REFRESH_CTRL_FI (1 << 0) 38 #define PANEL_REFRESH_CTRL_IDLE (1 << 1) 39 40 namespace android { 41 42 class DrmMode { 43 public: 44 DrmMode() = default; 45 DrmMode(drmModeModeInfoPtr m); 46 47 bool operator==(const drmModeModeInfo &m) const; 48 void ToDrmModeModeInfo(drm_mode_modeinfo *m) const; 49 is_vrr_mode()50 inline bool is_vrr_mode() const { return (type_ & DRM_MODE_TYPE_VRR); }; is_ns_mode()51 inline bool is_ns_mode() const { return (flags_ & DRM_MODE_FLAG_NS); }; 52 53 uint32_t id() const; 54 void set_id(uint32_t id); 55 56 uint32_t clock() const; 57 58 uint32_t h_display() const; 59 uint32_t h_sync_start() const; 60 uint32_t h_sync_end() const; 61 uint32_t h_total() const; 62 uint32_t h_skew() const; 63 64 uint32_t v_display() const; 65 uint32_t v_sync_start() const; 66 uint32_t v_sync_end() const; 67 uint32_t v_total() const; 68 uint32_t v_scan() const; 69 float v_refresh() const; 70 float te_frequency() const; 71 // Convert frequency to period, with the default unit being nanoseconds. 72 float v_period(int64_t unit = std::nano::den) const; 73 float te_period(int64_t unit = std::nano::den) const; 74 75 bool is_operation_rate_to_bts() const; 76 uint32_t flags() const; 77 uint32_t type() const; 78 79 std::string name() const; 80 81 private: 82 uint32_t id_ = 0; 83 84 uint32_t clock_ = 0; 85 86 uint32_t h_display_ = 0; 87 uint32_t h_sync_start_ = 0; 88 uint32_t h_sync_end_ = 0; 89 uint32_t h_total_ = 0; 90 uint32_t h_skew_ = 0; 91 92 uint32_t v_display_ = 0; 93 uint32_t v_sync_start_ = 0; 94 uint32_t v_sync_end_ = 0; 95 uint32_t v_total_ = 0; 96 uint32_t v_scan_ = 0; 97 uint32_t v_refresh_ = 0; 98 99 uint32_t flags_ = 0; 100 uint32_t type_ = 0; 101 102 std::string name_; 103 }; 104 } // namespace android 105 106 #endif // ANDROID_DRM_MODE_H_ 107