1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * Copyright (C) 2012-2013, The Linux Foundation. All rights reserved. 4 * 5 * Not a Contribution, Apache license notifications and license are 6 * retained for attribution purposes only. 7 8 * Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 21 #ifndef HWC_EXTERNAL_DISPLAY_H 22 #define HWC_EXTERNAL_DISPLAY_H 23 24 #include <linux/fb.h> 25 26 struct hwc_context_t; 27 struct msm_hdmi_mode_timing_info; 28 29 namespace qhwc { 30 31 //Type of scanning of EDID(Video Capability Data Block) 32 enum external_scansupport_type { 33 EXT_SCAN_NOT_SUPPORTED = 0, 34 EXT_SCAN_ALWAYS_OVERSCANED = 1, 35 EXT_SCAN_ALWAYS_UNDERSCANED = 2, 36 EXT_SCAN_BOTH_SUPPORTED = 3 37 }; 38 39 class ExternalDisplay 40 { 41 public: 42 ExternalDisplay(hwc_context_t* ctx); 43 ~ExternalDisplay(); 44 void setHPD(uint32_t startEnd); 45 void setActionSafeDimension(int w, int h); isCEUnderscanSupported()46 bool isCEUnderscanSupported() { return mUnderscanSupported; } 47 int configure(); 48 void getAttributes(int& width, int& height); 49 int teardown(); isConnected()50 bool isConnected() { 51 return mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].connected; 52 } 53 54 private: 55 int getModeCount() const; 56 void getEDIDModes(int *out) const; 57 void setEDIDMode(int resMode); 58 void setSPDInfo(const char* node, const char* property); 59 void readCEUnderscanInfo(); 60 bool readResolution(); 61 int parseResolution(char* edidStr, int* edidModes); 62 void setResolution(int ID); 63 bool openFrameBuffer(); 64 bool closeFrameBuffer(); 65 bool writeHPDOption(int userOption) const; 66 bool isValidMode(int ID); 67 int getModeOrder(int mode); 68 int getUserMode(); 69 int getBestMode(); 70 bool isInterlacedMode(int mode); 71 void resetInfo(); 72 void setAttributes(); 73 void getAttrForMode(int& width, int& height, int& fps); 74 75 int mFd; 76 int mFbNum; 77 int mCurrentMode; 78 int mEDIDModes[64]; 79 int mModeCount; 80 bool mUnderscanSupported; 81 hwc_context_t *mHwcContext; 82 fb_var_screeninfo mVInfo; 83 // Holds all the HDMI modes and timing info supported by driver 84 msm_hdmi_mode_timing_info* supported_video_mode_lut; 85 }; 86 87 }; //qhwc 88 // --------------------------------------------------------------------------- 89 #endif //HWC_EXTERNAL_DISPLAY_H 90