1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2012, 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 <utils/threads.h>
25#include <linux/fb.h>
26
27struct hwc_context_t;
28
29namespace qhwc {
30
31//Type of scanning of EDID(Video Capability Data Block)
32enum 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
39class ExternalDisplay
40{
41public:
42    ExternalDisplay(hwc_context_t* ctx);
43    ~ExternalDisplay();
44    int getModeCount() const;
45    void getEDIDModes(int *out) const;
46    bool isCEUnderscanSupported() { return mUnderscanSupported; }
47    void setExternalDisplay(bool connected, int extFbNum = 0);
48    bool isExternalConnected() { return mConnected;};
49    void  setExtDpyNum(int extDpyNum) { mExtDpyNum = extDpyNum;};
50    void setHPD(uint32_t startEnd);
51    void setEDIDMode(int resMode);
52    void setActionSafeDimension(int w, int h);
53    void processUEventOnline(const char *str);
54    void processUEventOffline(const char *str);
55
56private:
57    void readCEUnderscanInfo();
58    bool readResolution();
59    int  parseResolution(char* edidStr, int* edidModes);
60    void setResolution(int ID);
61    bool openFrameBuffer(int fbNum);
62    bool closeFrameBuffer();
63    bool writeHPDOption(int userOption) const;
64    bool isValidMode(int ID);
65    void handleUEvent(char* str, int len);
66    int  getModeOrder(int mode);
67    int  getUserMode();
68    int  getBestMode();
69    bool isInterlacedMode(int mode);
70    void resetInfo();
71    void setDpyHdmiAttr();
72    void setDpyWfdAttr();
73    void getAttrForMode(int& width, int& height, int& fps);
74    void updateExtDispDevFbIndex();
75    int  configureHDMIDisplay();
76    int  configureWFDDisplay();
77    int  teardownHDMIDisplay();
78    int  teardownWFDDisplay();
79    int  getExtFbNum(int &fbNum);
80
81    mutable android::Mutex mExtDispLock;
82    int mFd;
83    int mCurrentMode;
84    int mConnected;
85    int mConnectedFbNum;
86    int mResolutionMode;
87    char mEDIDs[128];
88    int mEDIDModes[64];
89    int mModeCount;
90    bool mUnderscanSupported;
91    hwc_context_t *mHwcContext;
92    fb_var_screeninfo mVInfo;
93    int mHdmiFbNum;
94    int mWfdFbNum;
95    int mExtDpyNum;
96};
97
98}; //qhwc
99// ---------------------------------------------------------------------------
100#endif //HWC_EXTERNAL_DISPLAY_H
101