external.h revision 57b955f68d6caa0d19e150e4c733d1569ae438a9 
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 <utils/threads.h>
25#include <linux/fb.h>
26
27struct hwc_context_t;
28struct msm_hdmi_mode_timing_info;
29
30namespace qhwc {
31
32//Type of scanning of EDID(Video Capability Data Block)
33enum external_scansupport_type {
34    EXT_SCAN_NOT_SUPPORTED      = 0,
35    EXT_SCAN_ALWAYS_OVERSCANED  = 1,
36    EXT_SCAN_ALWAYS_UNDERSCANED = 2,
37    EXT_SCAN_BOTH_SUPPORTED     = 3
38};
39
40class ExternalDisplay
41{
42public:
43    ExternalDisplay(hwc_context_t* ctx);
44    ~ExternalDisplay();
45    int getModeCount() const;
46    void getEDIDModes(int *out) const;
47    bool isCEUnderscanSupported() { return mUnderscanSupported; }
48    void setExternalDisplay(bool connected, int extFbNum = 0);
49    bool isExternalConnected() { return mConnected;};
50    void  setExtDpyNum(int extDpyNum) { mExtDpyNum = extDpyNum;};
51    void setHPD(uint32_t startEnd);
52    void setEDIDMode(int resMode);
53    void setActionSafeDimension(int w, int h);
54    void processUEventOnline(const char *str);
55    void processUEventOffline(const char *str);
56    int getHDMIIndex() { return mHdmiFbNum; }
57
58private:
59    void setSPDInfo(const char* node, const char* property);
60    void readCEUnderscanInfo();
61    bool readResolution();
62    int  parseResolution(char* edidStr, int* edidModes);
63    void setResolution(int ID);
64    bool openFrameBuffer(int fbNum);
65    bool closeFrameBuffer();
66    bool writeHPDOption(int userOption) const;
67    bool isValidMode(int ID);
68    void handleUEvent(char* str, int len);
69    int  getModeOrder(int mode);
70    int  getUserMode();
71    int  getBestMode();
72    bool isInterlacedMode(int mode);
73    void resetInfo();
74    void setDpyHdmiAttr();
75    void setDpyWfdAttr();
76    void getAttrForMode(int& width, int& height, int& fps);
77    void updateExtDispDevFbIndex();
78    int  configureHDMIDisplay();
79    int  configureWFDDisplay();
80    int  teardownHDMIDisplay();
81    int  teardownWFDDisplay();
82    int  getExtFbNum(int &fbNum);
83
84    mutable android::Mutex mExtDispLock;
85    int mFd;
86    int mCurrentMode;
87    int mConnected;
88    int mConnectedFbNum;
89    int mResolutionMode;
90    char mEDIDs[128];
91    int mEDIDModes[64];
92    int mModeCount;
93    bool mUnderscanSupported;
94    hwc_context_t *mHwcContext;
95    fb_var_screeninfo mVInfo;
96    int mHdmiFbNum;
97    int mWfdFbNum;
98    int mExtDpyNum;
99    // Holds all the HDMI modes and timing info supported by driver
100    msm_hdmi_mode_timing_info* supported_video_mode_lut;
101};
102
103}; //qhwc
104// ---------------------------------------------------------------------------
105#endif //HWC_EXTERNAL_DISPLAY_H
106