tuntdrv.c

来自「st7710的tuner标准驱动」· C语言代码 · 共 2,003 行 · 第 1/5 页
2,003 行
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail TermParams not valid\n", identity));
#endif
        SEM_UNLOCK(Lock_InitTermOpenClose);
        return(Error);
    }

    /* ---------- check that at least one init has taken place ---------- */
    if(InstanceChainTop == NULL)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail nothing initalized\n", identity));
#endif
        SEM_UNLOCK(Lock_InitTermOpenClose);
        return(STTUNER_ERROR_INITSTATE);
    }


    /* reap next matching DeviceName */
    Instance = InstanceChainTop;
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
    STTBX_Print(("Looking (%s)", Instance->DeviceName));
#endif
    while(1)
    {
        if ( strcmp((char *)Instance->DeviceName, (char *)DeviceName) == 0)
        {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
            STTBX_Print(("]\n"));
#endif
            /* found so now xlink prev and next(if applicable) and deallocate memory */
            InstancePrev = Instance->InstanceChainPrev;
            InstanceNext = Instance->InstanceChainNext;

            /* if instance to delete is first in chain */
            if (Instance->InstanceChainPrev == NULL)
            {
                InstanceChainTop = InstanceNext;        /* which would be NULL if last block to be term'd */
                if (InstanceNext != NULL)
                {
                InstanceNext->InstanceChainPrev = NULL; /* now top of chain, no previous instance */
                }
            }
            else
            {   /* safe to set value for prev instaance (because there IS one) */
                InstancePrev->InstanceChainNext = InstanceNext;
            }

            /* if there is a next block in the chain */
            if (InstanceNext != NULL)
            {
                InstanceNext->InstanceChainPrev = InstancePrev;
            }
            /*Deallocate memory for ioreg for  stb4000*/
         switch (Instance->TunerType)
         {
#ifdef STTUNER_BASIC
         #if  defined (STTUNER_DRV_TER_TUN_RF4000) || defined (STTUNER_DRV_TER_TUN_TDQD3) || defined (STTUNER_DRV_TER_TUN_DTT7300X)|| defined (STTUNER_DRV_TER_TUN_TDTGD108)
         case STTUNER_TUNER_TDQD3: 
         case STTUNER_TUNER_DTT7300X:      
         case STTUNER_TUNER_TDTGD108:
         #ifndef ST_OSLINUX
         case STTUNER_TUNER_RF4000:
         #endif
         #endif
#endif   

   #if defined(STTUNER_DRV_TER_TUN_DTVS223)
         case STTUNER_TUNER_DTVS223:
#endif         	
            Error = STTUNER_IOREG_Close(&Instance->DeviceMap);
           if (Error != ST_NO_ERROR)
            {
	   #ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
            STTBX_Print(("%s fail deallocate register database\n", identity));
	   #endif
           SEM_UNLOCK(Lock_InitTermOpenClose);
           return(Error);           
            }
             break;
          default:        
             break;
        }
        
            memory_deallocate(Instance->MemoryPartition, Instance);
            
		memory_deallocate(Instance->MemoryPartition, Instance->TunerRegVal);
            
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
            STTBX_Print(("%s freed block at %0x%08x\n", identity, (U32)Instance ));
#endif

#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
            STTBX_Print(("%s terminated ok\n", identity));
#endif
            SEM_UNLOCK(Lock_InitTermOpenClose);
            return(Error);
        }
        else if(Instance->InstanceChainNext == NULL)
        {       /* error we should have found a matching name before the end of the list */
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
                STTBX_Print(("\n%s fail no free handle before end of list\n", identity));
#endif
                SEM_UNLOCK(Lock_InitTermOpenClose);
                return(STTUNER_ERROR_INITSTATE);
        }
        else
        {
            Instance = Instance->InstanceChainNext;   /* next block */
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
            STTBX_Print(("(%s)", Instance->DeviceName));
#endif
        }

    }


#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
    STTBX_Print(("%s FAIL! this point should NEVER be reached\n", identity));
#endif
    SEM_UNLOCK(Lock_InitTermOpenClose);
    return(Error);
}


/* ----------------------------------------------------------------------------
Name: tuner_tuntdrv_Open()

Description:

Parameters:

Return Value:
---------------------------------------------------------------------------- */
ST_ErrorCode_t tuner_tuntdrv_Open(ST_DeviceName_t *DeviceName, TUNER_OpenParams_t *OpenParams, TUNER_Handle_t *Handle)
{
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
   const char *identity = "STTUNER tuntdrv.c tuner_tuntdrv_Open()";
#endif
    ST_ErrorCode_t Error = ST_NO_ERROR;
    TUNTDRV_InstanceData_t *Instance;

    if(Installed == FALSE)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail driver not installed\n", identity));
#endif
        return(STTUNER_ERROR_INITSTATE);
    }

    /* now safe to lock semaphore */
    SEM_LOCK(Lock_InitTermOpenClose);

    /* ---------- check that at least one init has taken place ---------- */
    if(InstanceChainTop == NULL)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail nothing initalized\n", identity));
#endif
        SEM_UNLOCK(Lock_InitTermOpenClose);
        return(STTUNER_ERROR_INITSTATE);
    }

    /* find  handle from name */
    Instance = InstanceChainTop;
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
    STTBX_Print(("%s looking (%s)", identity, Instance->DeviceName));
#endif
    while(strcmp((char *)Instance->DeviceName, (char *)DeviceName) != 0)
    {
        /* error, should have found matching DeviceName before end of list */
        if(Instance->InstanceChainNext == NULL)
        {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
            STTBX_Print(("\n%s fail no block named '%s' before end of list\n", identity, DeviceName));
#endif
            SEM_UNLOCK(Lock_InitTermOpenClose);
            return(STTUNER_ERROR_INITSTATE);
        }
        Instance = Instance->InstanceChainNext;   /* next block */
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("(%s)", Instance->DeviceName));
#endif
    }
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
    STTBX_Print((" found ok\n"));
#endif

    if(Instance->TopLevelHandle != STTUNER_MAX_HANDLES)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail driver instance already open\n", identity));
#endif
        SEM_UNLOCK(Lock_InitTermOpenClose);
        return(ST_ERROR_OPEN_HANDLE);
    }

    /* now got pointer to free (and valid) data block */
     Instance->TopLevelHandle = OpenParams->TopLevelHandle;
    *Handle = (U32)Instance;



#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
    STTBX_Print(("%s opened ok\n", identity));
#endif

    SEM_UNLOCK(Lock_InitTermOpenClose);
    return(Error);
}

#ifdef STTUNER_BASIC

/* ----------------------------------------------------------------------------
Name:   tuner_tuntdrv_Open_DTT7572()

Description:

Parameters:

Return Value:
---------------------------------------------------------------------------- */

#ifdef STTUNER_DRV_TER_TUN_DTT7572
ST_ErrorCode_t tuner_tuntdrv_Open_DTT7572(ST_DeviceName_t *DeviceName, TUNER_OpenParams_t *OpenParams, TUNER_Capability_t *Capability, TUNER_Handle_t *Handle)
{
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
   const char *identity = "STTUNER tuntdrv.c tuner_tuntdrv_Open_DTT7572()";
#endif
    ST_ErrorCode_t Error = ST_NO_ERROR;
    TUNTDRV_InstanceData_t *Instance;

    Error = tuner_tuntdrv_Open(DeviceName, OpenParams, Handle);
    if (Error != ST_NO_ERROR)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail, Error=%d\n", identity, Error));
#endif
        return(Error);
    }

    Instance = TUNTDRV_GetInstFromHandle(*Handle);

    if (Instance->TunerType != STTUNER_TUNER_DTT7572)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail no STTUNER_TUNER_DTT7572 for name (%s)\n", identity, Instance->DeviceName ));
#endif
        return(ST_ERROR_BAD_PARAMETER);
    }

    LL_TunerInit(Instance);

#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail\n", identity));
#endif
    return(Error);
}

#endif

/* ----------------------------------------------------------------------------
Name:   tuner_tuntdrv_Open_DTT7578()

Description:

Parameters:

Return Value:
---------------------------------------------------------------------------- */
#ifdef STTUNER_DRV_TER_TUN_DTT7578
ST_ErrorCode_t tuner_tuntdrv_Open_DTT7578(ST_DeviceName_t *DeviceName, TUNER_OpenParams_t *OpenParams, TUNER_Capability_t *Capability, TUNER_Handle_t *Handle)
{
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
   const char *identity = "STTUNER tuntdrv.c tuner_tuntdrv_Open_DTT7578()";
#endif
    ST_ErrorCode_t Error = ST_NO_ERROR;
    TUNTDRV_InstanceData_t *Instance;

    Error = tuner_tuntdrv_Open(DeviceName, OpenParams, Handle);
    if (Error != ST_NO_ERROR)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail, Error=%d\n", identity, Error));
#endif
        return(Error);
    }

    Instance = TUNTDRV_GetInstFromHandle(*Handle);

    if (Instance->TunerType != STTUNER_TUNER_DTT7578)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail no STTUNER_TUNER_DTT7578 for name (%s)\n", identity, Instance->DeviceName ));
#endif
        return(ST_ERROR_BAD_PARAMETER);
    }

    LL_TunerInit(Instance);

#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail\n", identity));
#endif

    return(Error);
}
#endif
/* ----------------------------------------------------------------------------
Name:   tuner_tuntdrv_Open_DTT7592()

Description:

Parameters:

Return Value:
---------------------------------------------------------------------------- */
#ifdef STTUNER_DRV_TER_TUN_DTT7592
ST_ErrorCode_t tuner_tuntdrv_Open_DTT7592(ST_DeviceName_t *DeviceName, TUNER_OpenParams_t *OpenParams, TUNER_Capability_t *Capability, TUNER_Handle_t *Handle)
{
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
   const char *identity = "STTUNER tuntdrv.c tuner_tuntdrv_Open_DTT7578()";
#endif
    ST_ErrorCode_t Error = ST_NO_ERROR;
    TUNTDRV_InstanceData_t *Instance;

    Error = tuner_tuntdrv_Open(DeviceName, OpenParams, Handle);
    if (Error != ST_NO_ERROR)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail, Error=%d\n", identity, Error));
#endif
        return(Error);
    }

    Instance = TUNTDRV_GetInstFromHandle(*Handle);

    if (Instance->TunerType != STTUNER_TUNER_DTT7592)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail no STTUNER_TUNER_DTT7592 for name (%s)\n", identity, Instance->DeviceName ));
#endif
        return(ST_ERROR_BAD_PARAMETER);
    }

    LL_TunerInit(Instance);

#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail\n", identity));
#endif

    return(Error);
}

#endif
/* ----------------------------------------------------------------------------
Name:   tuner_tuntdrv_Open_TDLB7()

Description:

Parameters:

Return Value:
---------------------------------------------------------------------------- */
#ifdef STTUNER_DRV_TER_TUN_TDLB7
ST_ErrorCode_t tuner_tuntdrv_Open_TDLB7(ST_DeviceName_t *DeviceName, TUNER_OpenParams_t *OpenParams, TUNER_Capability_t *Capability, TUNER_Handle_t *Handle)
{
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
   const char *identity = "STTUNER tuntdrv.c tuner_tuntdrv_Open_TDLB7()";
#endif
    ST_ErrorCode_t Error = ST_NO_ERROR;
    TUNTDRV_InstanceData_t *Instance;

    Error = tuner_tuntdrv_Open(DeviceName, OpenParams, Handle);
    if (Error != ST_NO_ERROR)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail, Error=%d\n", identity, Error));
#endif
        return(Error);
    }

    Instance = TUNTDRV_GetInstFromHandle(*Handle);

    if (Instance->TunerType != STTUNER_TUNER_TDLB7)
    {
#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail no STTUNER_TUNER_TDLB7 for name (%s)\n", identity, Instance->DeviceName ));
#endif
        return(ST_ERROR_BAD_PARAMETER);
    }

    LL_TunerInit(Instance);

#ifdef STTUNER_DEBUG_MODULE_TERDRV_TUNTDRV
        STTBX_Print(("%s fail\n", identity));
#endif
tuntdrv.c - 源码说明

本页面展示了「st7710的tuner标准驱动」中的 tuntdrv.c 源码文件，采用 C语言编程语言编写，共 2,003 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。
虫虫开发者社区收录了大量与ST7710相关的技术资源，包括源代码、技术文档、电路图等，是电子工程师和嵌入式开发者的专业学习平台。
⌨️ 快捷键说明

复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?