Panel开发参考

MI_U32 ST_PanelStart(void)
{
    ST_Panel_Attr_T *pstPanelAttr = g_stPanelAttr;

    MI_DISP_DEV DispDev = 0;
    MI_U32 u32DispWidth = pstPanelAttr->u32Width; // 屏的width
    MI_U32 u32DispHeight = pstPanelAttr->u32Height; // 屏的height

    MI_PANEL_IntfType_e eLinkType = E_MI_PNL_INTF_TTL; // linktype，和platform有关联，根据实际platform的参数决定

    /************************************************
    Step0:  panel spi cmd init(by panel request)
    *************************************************/
    ST_Spi_CommandStart();// 如果需要SPI 通讯驱动的屏，需进行这步骤

    /************************************************
    Step1:  panel init
    *************************************************/
    STCHECKRESULT(MI_PANEL_Init(eLinkType)); // 芯片端的panel模块初始化

    /************************************************
    Step2:  set disp pub 
    *************************************************/
    MI_DISP_PubAttr_t stPubAttr;
    memset(&stPubAttr, 0x0, sizeof(MI_DISP_PubAttr_t)); // 芯片端显示模块初始化，显示到屏上的内容从disp送给panel

    stPubAttr.u32BgColor = YUYV_BLACK;
    stPubAttr.eIntfType = E_MI_DISP_INTF_TTL;
    stPubAttr.eIntfSync =  E_MI_DISP_OUTPUT_USER;
    STCHECKRESULT(MI_DISP_SetPubAttr(DispDev,  &stPubAttr));
    STCHECKRESULT(MI_DISP_Enable(DispDev));

    /************************************************
    Step3:  set layer
    *************************************************/
    MI_DISP_LAYER            DispLayer = 0;
    MI_SYS_PixelFormat_e     ePixFormat = E_MI_SYS_PIXEL_FRAME_YUV_SEMIPLANAR_420;  
    MI_DISP_VideoLayerAttr_t stLayerAttr;


    memset(&stLayerAttr, 0x0, sizeof(MI_DISP_VideoLayerAttr_t));

    stLayerAttr.stVidLayerDispWin.u16X = 0;
    stLayerAttr.stVidLayerDispWin.u16Y = 0;
    stLayerAttr.stVidLayerDispWin.u16Width = u32DispWidth;
    stLayerAttr.stVidLayerDispWin.u16Height = u32DispHeight;

    stLayerAttr.stVidLayerSize.u16Width = u32DispWidth;
    stLayerAttr.stVidLayerSize.u16Height = u32DispHeight;

    stLayerAttr.ePixFormat = ePixFormat;

    STCHECKRESULT(MI_DISP_BindVideoLayer(DispLayer,DispDev));
    STCHECKRESULT(MI_DISP_SetVideoLayerAttr(DispLayer, &stLayerAttr));
    STCHECKRESULT(MI_DISP_EnableVideoLayer(DispLayer));

    /************************************************
    Step4:  set inputport
    *************************************************/
    MI_U8 u8DispInport = 0;

    MI_DISP_InputPortAttr_t stInputPortAttr;
    MI_DISP_VidWinRect_t stWinRect;

    memset(&stWinRect, 0x0, sizeof(MI_DISP_VidWinRect_t));
    memset(&stInputPortAttr, 0x0, sizeof(MI_DISP_InputPortAttr_t));

    stInputPortAttr.stDispWin.u16X = 0;
    stInputPortAttr.stDispWin.u16Y = 0;
    stInputPortAttr.stDispWin.u16Width =u32DispWidth;
    stInputPortAttr.stDispWin.u16Height = u32DispHeight;

    stInputPortAttr.u16SrcWidth =u32DispWidth;
    stInputPortAttr.u16SrcHeight = u32DispHeight;

    stWinRect.u16Width = u32DispWidth;
    stWinRect.u16Height = u32DispHeight;


    printf("%s:%d layer:%d port:%d srcwidth:%d srcheight:%d x:%d y:%d outwidth:%d outheight:%d\n",__FUNCTION__,__LINE__,
        DispLayer,u8DispInport,
        stInputPortAttr.u16SrcWidth,stInputPortAttr.u16SrcHeight,
        stInputPortAttr.stDispWin.u16X,stInputPortAttr.stDispWin.u16Y,
        stInputPortAttr.stDispWin.u16Width,stInputPortAttr.stDispWin.u16Height);

    STCHECKRESULT(MI_DISP_SetInputPortAttr(DispLayer, u8DispInport, &stInputPortAttr));
    STCHECKRESULT(MI_DISP_EnableInputPort(DispLayer, u8DispInport));
    STCHECKRESULT(MI_DISP_SetInputPortSyncMode(DispLayer, u8DispInport, E_MI_DISP_SYNC_MODE_FREE_RUN));

    /************************************************
    Step5:  bind vpe->disp
*************************************************/
// disp 模块的内容，有几种方式可以使用：
//1、往mi disp buffer填充数据，可有用户自行定义；
//2、可以bind 到divp，divp输出送给disp；divp的格式和scaler和rotate功能，看客户的需求场景
//3、可以bind到vpe，本例子是直接bind vpe。Vpe的内容是sensor输入的
    ST_Sys_BindInfo_T stBindInfo;
    memset(&stBindInfo, 0x0, sizeof(ST_Sys_BindInfo_T));
    stBindInfo.stSrcChnPort.eModId = E_MI_MODULE_ID_VPE;
    stBindInfo.stSrcChnPort.u32DevId = 0;
    stBindInfo.stSrcChnPort.u32ChnId = 0;
    stBindInfo.stSrcChnPort.u32PortId = 0;
    stBindInfo.stDstChnPort.eModId = E_MI_MODULE_ID_DISP;
    stBindInfo.stDstChnPort.u32DevId =  0;
    stBindInfo.stDstChnPort.u32ChnId = 0;
    stBindInfo.stDstChnPort.u32PortId = 0;
    stBindInfo.u32SrcFrmrate = SENSOR_RGB_FPS;
    stBindInfo.u32DstFrmrate = SENSOR_RGB_FPS;
    stBindInfo.eBindType = E_MI_SYS_BIND_TYPE_FRAME_BASE;

    STCHECKRESULT(ST_Sys_Bind(&stBindInfo));

    SS_PWM_Config(PANEL_BL_PWM_NUM,pwm_Enable,100,PANEL_BL_PWM_ON);

    return MI_SUCCESS;
}

ln -s /customer/misc/config.ini /config/config.ini
insmod /config/modules/4.9.84/mi_panel.ko
insmod /config/modules/4.9.84/mi_disp.ko