1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2012-2014, 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_HDMI_DISPLAY_H
22#define HWC_HDMI_DISPLAY_H
23
24#include <linux/fb.h>
25
26struct msm_hdmi_mode_timing_info;
27
28namespace qhwc {
29
30//Type of scanning of EDID(Video Capability Data Block)
31enum hdmi_scansupport_type {
32    HDMI_SCAN_NOT_SUPPORTED      = 0,
33    HDMI_SCAN_ALWAYS_OVERSCANED  = 1,
34    HDMI_SCAN_ALWAYS_UNDERSCANED = 2,
35    HDMI_SCAN_BOTH_SUPPORTED     = 3
36};
37
38// Structure to store EDID related data
39struct EDIDData {
40    int mMode, mWidth, mHeight, mFps;
41    // Predetermined ordering for each mode
42    int mModeOrder;
43    EDIDData(int mode, int width, int height, int fps, int order)
44    : mMode(mode), mWidth(width), mHeight(height), mFps(fps), mModeOrder(order)
45    { }
46};
47
48class HDMIDisplay
49{
50public:
51    HDMIDisplay();
52    ~HDMIDisplay();
53    void setHPD(uint32_t startEnd);
54    void setActionSafeDimension(int w, int h);
55    bool isCEUnderscanSupported() { return mUnderscanSupported; }
56    int configure();
57    void getAttributes(uint32_t& width, uint32_t& height);
58    int teardown();
59    uint32_t getWidth() const { return mXres; };
60    uint32_t getHeight() const { return mYres; };
61    uint32_t getVsyncPeriod() const { return mVsyncPeriod; };
62    int getFd() const { return mFd; };
63    bool getMDPScalingMode() const { return mMDPScalingMode; }
64    void activateDisplay();
65    /* Returns true if HDMI is the PRIMARY display device*/
66    bool isHDMIPrimaryDisplay();
67    int getConnectedState();
68    /* when HDMI is an EXTERNAL display, PRIMARY display attributes are needed
69       for scaling mode */
70    void setPrimaryAttributes(uint32_t primaryWidth, uint32_t primaryHeight);
71    int getActiveConfig() const { return mActiveConfig; };
72    int setActiveConfig(int newConfig);
73    int getAttrForConfig(int config, uint32_t& xres,
74            uint32_t& yres, uint32_t& refresh) const;
75    int getDisplayConfigs(uint32_t* configs, size_t* numConfigs) const;
76
77private:
78    int getModeCount() const;
79    void setSPDInfo(const char* node, const char* property);
80    void readCEUnderscanInfo();
81    bool readResolution();
82    int  parseResolution(char* edidMode);
83    bool openFrameBuffer();
84    bool closeFrameBuffer();
85    bool writeHPDOption(int userOption) const;
86    bool isValidMode(int mode);
87    int  getModeOrder(int mode);
88    int  getUserConfig();
89    int  getBestConfig();
90    bool isInterlacedMode(int mode);
91    void resetInfo();
92    void setAttributes();
93    void getAttrForMode(uint32_t& width, uint32_t& height, uint32_t& fps);
94    int openDeviceNode(const char* node, int fileMode) const;
95    int getModeIndex(int mode);
96    bool isValidConfigChange(int newConfig);
97
98    int mFd;
99    int mFbNum;
100    // mCurrentMode is the HDMI video format that corresponds to the mEDIDMode
101    // entry referenced by mActiveConfig
102    int mCurrentMode;
103    // mActiveConfig is the index correponding to the currently active mode for
104    // the HDMI display. It basically indexes the mEDIDMode array
105    int mActiveConfig;
106    // mEDIDModes contains a list of HDMI video formats (modes) supported by the
107    // HDMI display
108    int mEDIDModes[64];
109    int mModeCount;
110    fb_var_screeninfo mVInfo;
111    // Holds all the HDMI modes and timing info supported by driver
112    msm_hdmi_mode_timing_info* supported_video_mode_lut;
113    uint32_t mXres, mYres, mVsyncPeriod, mPrimaryWidth, mPrimaryHeight;
114    bool mMDPScalingMode;
115    bool mUnderscanSupported;
116    // Downscale feature switch, set via system property
117    // sys.hwc.mdp_downscale_enabled
118    bool mMDPDownscaleEnabled;
119    bool mEnableResolutionChange;
120    int mDisplayId;
121};
122
123}; //qhwc
124// ---------------------------------------------------------------------------
125#endif //HWC_HDMI_DISPLAY_H
126