libhwc2.1/libdisplayinterface/ExynosDisplayDrmInterface.h

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _EXYNOSDISPLAYDRMINTERFACE_H
#define _EXYNOSDISPLAYDRMINTERFACE_H

#include "ExynosDisplayInterface.h"
#include "ExynosHWC.h"
#include "drmcrtc.h"
#include "drmconnector.h"
#include "vsyncworker.h"
#include "ExynosMPP.h"
#include <unordered_map>
#include <xf86drmMode.h>

/* Max plane number of buffer object */
#define HWC_DRM_BO_MAX_PLANES 4

#ifndef HWC_FORCE_PANIC_PATH
#define HWC_FORCE_PANIC_PATH "/d/dpu/panic"
#endif

using namespace android;

class ExynosDevice;
class ExynosDisplayDrmInterface : public ExynosDisplayInterface {
    public:
        class ExynosVsyncCallback: public VsyncCallback {
            public:
                void Callback(int display, int64_t timestamp) override;
                void init(ExynosDevice *exynosDevice, ExynosDisplay *exynosDisplay);
            private:
                ExynosDevice *mExynosDevice;
                ExynosDisplay *mExynosDisplay;
        };
        ExynosDisplayDrmInterface(ExynosDisplay *exynosDisplay);
        ~ExynosDisplayDrmInterface();
        virtual void init(ExynosDisplay *exynosDisplay);
        virtual int32_t setPowerMode(int32_t mode);
        virtual int32_t setVsyncEnabled(uint32_t enabled);
        virtual int32_t getDisplayAttribute(
                hwc2_config_t config,
                int32_t attribute, int32_t* outValue);
        virtual int32_t getDisplayConfigs(
                uint32_t* outNumConfigs,
                hwc2_config_t* outConfigs);
        virtual void dumpDisplayConfigs();
        virtual int32_t getColorModes(
                uint32_t* outNumModes,
                int32_t* outModes);
        virtual int32_t setColorMode(int32_t mode);
        virtual int32_t setActiveConfig(hwc2_config_t config);
        virtual int32_t setCursorPositionAsync(uint32_t x_pos, uint32_t y_pos);
        virtual int32_t getHdrCapabilities(uint32_t* outNumTypes,
                int32_t* outTypes, float* outMaxLuminance,
                float* outMaxAverageLuminance, float* outMinLuminance);
        virtual int32_t deliverWinConfigData();
        virtual int32_t clearDisplay();
        virtual int32_t disableSelfRefresh(uint32_t disable);
        virtual int32_t setForcePanic();
        virtual int getDisplayFd() { return mDrmDevice->fd(); };
        virtual void initDrmDevice(DrmDevice *drmDevice);
        inline virtual uint32_t getMaxWindowNum();
    protected:
        int32_t applyDisplayMode();
        String8& dumpAtomicCommitInfo(String8 &result, drmModeAtomicReqPtr pset, bool debugPrint = false);
        int32_t chosePreferredConfig();
        int getDeconChannel(ExynosMPP *otfMPP);
    protected:
        struct ModeState {
            bool needs_modeset = false;
            DrmMode mode;
            uint32_t blob_id = 0;
            uint32_t old_blob_id = 0;
        };
    protected:
        class DrmModeAtomicReq {
            public:
                DrmModeAtomicReq() { mPset = drmModeAtomicAlloc(); };
                ~DrmModeAtomicReq();

                DrmModeAtomicReq(const DrmModeAtomicReq&) = delete;
                DrmModeAtomicReq& operator=(const DrmModeAtomicReq&) = delete;

                drmModeAtomicReqPtr pset() { return mPset; };
                void setError(int err, ExynosDisplayDrmInterface *drmDisplayInterface) { mError = err; };
            private:
                drmModeAtomicReqPtr mPset;
                int mError = 0;
                ExynosDisplayDrmInterface *mDrmDisplayInterface = NULL;
        };
        DrmDevice *mDrmDevice;
        DrmCrtc *mDrmCrtc;
        DrmConnector *mDrmConnector;
        VSyncWorker mDrmVSyncWorker;
        ExynosVsyncCallback mVsyncCallbak;
        ModeState mModeState;
        /* Mapping plane id to ExynosMPP, key is plane id */
        std::unordered_map<uint32_t, ExynosMPP*> mExynosMPPsForPlane;
        /* TODO: Temporary variable to manage fb id */
        std::vector<uint32_t> mOldFbIds;
};

#endif