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126 lines
4.4 KiB
126 lines
4.4 KiB
4 months ago
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/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012-2014, The Linux Foundation. All rights reserved.
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*
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* Not a Contribution, Apache license notifications and license are
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* retained for attribution purposes only.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef HWC_HDMI_DISPLAY_H
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#define HWC_HDMI_DISPLAY_H
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#include <linux/fb.h>
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struct msm_hdmi_mode_timing_info;
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namespace qhwc {
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//Type of scanning of EDID(Video Capability Data Block)
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enum hdmi_scansupport_type {
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HDMI_SCAN_NOT_SUPPORTED = 0,
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HDMI_SCAN_ALWAYS_OVERSCANED = 1,
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HDMI_SCAN_ALWAYS_UNDERSCANED = 2,
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HDMI_SCAN_BOTH_SUPPORTED = 3
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};
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// Structure to store EDID related data
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struct EDIDData {
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int mMode, mWidth, mHeight, mFps;
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// Predetermined ordering for each mode
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int mModeOrder;
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EDIDData(int mode, int width, int height, int fps, int order)
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: mMode(mode), mWidth(width), mHeight(height), mFps(fps), mModeOrder(order)
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{ }
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};
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class HDMIDisplay
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{
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public:
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HDMIDisplay();
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~HDMIDisplay();
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void setHPD(uint32_t startEnd);
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void setActionSafeDimension(int w, int h);
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bool isCEUnderscanSupported() { return mUnderscanSupported; }
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int configure();
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void getAttributes(uint32_t& width, uint32_t& height);
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int teardown();
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uint32_t getWidth() const { return mXres; };
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uint32_t getHeight() const { return mYres; };
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uint32_t getVsyncPeriod() const { return mVsyncPeriod; };
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int getFd() const { return mFd; };
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bool getMDPScalingMode() const { return mMDPScalingMode; }
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void activateDisplay();
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/* Returns true if HDMI is the PRIMARY display device*/
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bool isHDMIPrimaryDisplay();
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int getConnectedState();
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/* when HDMI is an EXTERNAL display, PRIMARY display attributes are needed
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for scaling mode */
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void setPrimaryAttributes(uint32_t primaryWidth, uint32_t primaryHeight);
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int getActiveConfig() const { return mActiveConfig; };
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int setActiveConfig(int newConfig);
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int getAttrForConfig(int config, uint32_t& xres,
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uint32_t& yres, uint32_t& refresh) const;
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int getDisplayConfigs(uint32_t* configs, size_t* numConfigs) const;
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private:
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int getModeCount() const;
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void setSPDInfo(const char* node, const char* property);
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void readCEUnderscanInfo();
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bool readResolution();
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int parseResolution(char* edidMode);
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bool openFrameBuffer();
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bool closeFrameBuffer();
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bool writeHPDOption(int userOption) const;
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bool isValidMode(int mode);
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int getModeOrder(int mode);
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int getUserConfig();
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int getBestConfig();
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bool isInterlacedMode(int mode);
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void resetInfo();
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void setAttributes();
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void getAttrForMode(uint32_t& width, uint32_t& height, uint32_t& fps);
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int openDeviceNode(const char* node, int fileMode) const;
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int getModeIndex(int mode);
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bool isValidConfigChange(int newConfig);
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int mFd;
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int mFbNum;
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// mCurrentMode is the HDMI video format that corresponds to the mEDIDMode
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// entry referenced by mActiveConfig
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int mCurrentMode;
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// mActiveConfig is the index correponding to the currently active mode for
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// the HDMI display. It basically indexes the mEDIDMode array
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int mActiveConfig;
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// mEDIDModes contains a list of HDMI video formats (modes) supported by the
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// HDMI display
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int mEDIDModes[64];
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int mModeCount;
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fb_var_screeninfo mVInfo;
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// Holds all the HDMI modes and timing info supported by driver
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msm_hdmi_mode_timing_info* supported_video_mode_lut;
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uint32_t mXres, mYres, mVsyncPeriod, mPrimaryWidth, mPrimaryHeight;
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bool mMDPScalingMode;
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bool mUnderscanSupported;
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// Downscale feature switch, set via system property
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// sys.hwc.mdp_downscale_enabled
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bool mMDPDownscaleEnabled;
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bool mEnableResolutionChange;
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int mDisplayId;
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};
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}; //qhwc
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// ---------------------------------------------------------------------------
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#endif //HWC_HDMI_DISPLAY_H
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