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
26struct hwc_context_t;
27struct msm_hdmi_mode_timing_info;
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    void setHPD(uint32_t startEnd);
45    void setActionSafeDimension(int w, int h);
46    bool isCEUnderscanSupported() { return mUnderscanSupported; }
47    int configure();
48    void getAttributes(int& width, int& height);
49    int teardown();
50    bool isConnected() {
51        return  mHwcContext->dpyAttr[HWC_DISPLAY_EXTERNAL].connected;
52    }
53
54private:
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