lstem.c

st7710的tuner标准驱动

}   



/* ----------------------------------------------------------------------------
Name: lnb_lSTEM_Term()

Description:
    
Parameters:
    
Return Value:
---------------------------------------------------------------------------- */
ST_ErrorCode_t lnb_lSTEM_Term(ST_DeviceName_t *DeviceName,LNB_TermParams_t *TermParams)
{
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
   const char *identity = "STTUNER lstem.c lnb_lstem_Term()";
#endif
    ST_ErrorCode_t Error = ST_NO_ERROR;
    LSTEM_InstanceData_t *Instance, *InstancePrev, *InstanceNext;

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

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

    /* ---------- check params ---------- */
    Error = STTUNER_Util_CheckPtrNull(TermParams);
    if( Error != ST_NO_ERROR)
    {
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
        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_SATDRV_LSTEM
        STTBX_Print(("%s fail nothing initalized\n", identity));
#endif
        SEM_UNLOCK(Lock_InitTermOpenClose);
        return(STTUNER_ERROR_INITSTATE);
    }


    /* reap next matching DeviceName */
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
    STTBX_Print(("%s looking for first free handle[\n", identity));
#endif

    Instance = InstanceChainTop;
    while(1)
    {
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
        STTBX_Print(("(%s)", Instance->DeviceName));
#endif
        if ( strcmp((char *)Instance->DeviceName, (char *)DeviceName) == 0)
        {
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
            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;
            }   

            memory_deallocate(Instance->MemoryPartition, Instance);
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
            STTBX_Print(("%s freed block at %0x%08x\n", identity, (U32)Instance ));
#endif

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

/* ----------------------------------------------------------------------------
Name: lnb_lSTEM_Open()

Description:
    
Parameters:
    
Return Value:
---------------------------------------------------------------------------- */
ST_ErrorCode_t lnb_lSTEM_Open (ST_DeviceName_t *DeviceName, LNB_OpenParams_t *OpenParams, LNB_Capability_t *Capability, LNB_Handle_t *Handle)
{
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
   const char *identity = "STTUNER lstem.c lnb_lstem_Open()";
#endif
    ST_ErrorCode_t Error = ST_NO_ERROR;
    LSTEM_InstanceData_t     *Instance;

    if(Installed == FALSE)
    {
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
        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_SATDRV_LSTEM
        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_SATDRV_LSTEM
    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_SATDRV_LSTEM
            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_SATDRV_LSTEM
        STTBX_Print(("(%s)", Instance->DeviceName));
#endif
    }
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
    STTBX_Print((" found ok\n"));
#endif

#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
    STTBX_Print(("%s using block at 0x%08x\n", identity, (U32)Instance));
#endif

    if(Instance->TopLevelHandle != STTUNER_MAX_HANDLES)
    {
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
        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 */

/* Moved here for Dual Stem */
 
    Instance->TopLevelHandle = OpenParams->TopLevelHandle;  /* mark as valid */
    *Handle = (U32)Instance;


    LSTEM_UpdateLNB(Instance->IOHandle);

/* Moved till here for Dual Stem */   
    
    /* Set LNB capabilties */
    Capability->ShortCircuitDetect = FALSE;
    Capability->PowerAvailable     = TRUE;
    Capability->PolarizationSelect = STTUNER_PLR_ALL;
 
    /* Set latest configuration */
    Instance->Config.Status       = LNB_STATUS_OFF;
    Instance->Config.ToneState    = STTUNER_LNB_TONE_OFF;
    Instance->Config.Polarization = STTUNER_LNB_OFF;

    /* LNB tone off */
    LSTEM_SetLnb(Instance->IOHandle,0);
    /* LNB polarization mode set to Horizontal*/
    LSTEM_SetPower(Instance->IOHandle, LNB_STATUS_OFF);

    LSTEM_UpdateLNB(Instance->IOHandle);

    LSTEM_Delay_uS(500);

    /* Check to ensure there is no problem with the LNB circuit */
    LSTEM_UpdateLNB(Instance->IOHandle);
    Error = LSTEM_GetPower(Instance->IOHandle, &Instance->Config.Status);
    if (Error == ST_NO_ERROR)   /* last i/o (above) operation was good */
    {
        if (Instance->Config.Status == LNB_STATUS_SHORT_CIRCUIT)
        {
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
            STTBX_Print(("%s fail SAT_LNB_SHORT_CIRCUIT\n", identity));
#endif
            SEM_UNLOCK(Lock_InitTermOpenClose);
            return(STTUNER_ERROR_HWFAIL);
        }
    }
    else
    {
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
        STTBX_Print(("%s fail Error=%u\n", identity, Error));   /* LSTEM_GetPower failed */
#endif
        SEM_UNLOCK(Lock_InitTermOpenClose);
        return(Error);
    }

/*
    Instance->TopLevelHandle = OpenParams->TopLevelHandle;  *//* mark as valid */
/*    *Handle = (U32)Instance;
*/

#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
    STTBX_Print(("%s opened ok\n", identity));
#endif
    SEM_UNLOCK(Lock_InitTermOpenClose);
    return(Error);
}   



/* ----------------------------------------------------------------------------
Name: lnb_lSTEM_Close()

Description:
    
Parameters:
    
Return Value:
---------------------------------------------------------------------------- */
ST_ErrorCode_t lnb_lSTEM_Close(LNB_Handle_t Handle, LNB_CloseParams_t *CloseParams)
{
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
   const char *identity = "STTUNER lstem.c lnb_lstem_Close()";
#endif
    ST_ErrorCode_t Error = ST_NO_ERROR;
    LSTEM_InstanceData_t     *Instance;

    Instance = (LSTEM_InstanceData_t *)Handle;

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

    SEM_LOCK(Lock_InitTermOpenClose);

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

    if(Instance->TopLevelHandle == STTUNER_MAX_HANDLES)
    {
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
        STTBX_Print(("%s fail driver instance not open\n", identity));
#endif
        SEM_UNLOCK(Lock_InitTermOpenClose);
        return(ST_ERROR_OPEN_HANDLE);
    }

    Instance->TopLevelHandle = STTUNER_MAX_HANDLES;

#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
    STTBX_Print(("%s closed\n", identity));
#endif

    SEM_UNLOCK(Lock_InitTermOpenClose);
    return(Error);
}   

#if defined(STTUNER_DRV_SAT_LNB21) || defined(STTUNER_DRV_SAT_LNBH21)
/* ----------------------------------------------------------------------------
Name: lnb_lstem_overloadcheck()

Description:
    Dummy Function
    
Parameters:
    
Return Value:
---------------------------------------------------------------------------- */

ST_ErrorCode_t lnb_lstem_overloadcheck(LNB_Handle_t Handle, BOOL  *IsOverTemp, BOOL *IsCurrentOvrLoad)
{
    ST_ErrorCode_t Error = ST_NO_ERROR;
    return(Error);
}

#if defined(STTUNER_DRV_SAT_LNBH21)
/* ----------------------------------------------------------------------------
Name: lnb_lstem_setttxmode()

Description:
    Dummy Function
    
Parameters:
    
Return Value:
---------------------------------------------------------------------------- */

ST_ErrorCode_t lnb_lstem_setttxmode(LNB_Handle_t Handle, STTUNER_LnbTTxMode_t Ttxmode)
{
    ST_ErrorCode_t Error = ST_NO_ERROR;
    return(Error);
}
#endif
#endif


/* ----------------------------------------------------------------------------
Name: lnb_lSTEM_GetConfig()

Description:
    
Parameters:
    
Return Value:
---------------------------------------------------------------------------- */
ST_ErrorCode_t lnb_lSTEM_GetConfig(LNB_Handle_t Handle, LNB_Config_t *Config)
{
#ifdef STTUNER_DEBUG_MODULE_SATDRV_LSTEM
   const char *identity = "STTUNER lstem.c lnb_lSTEM_GetConfig()";
#endif
    ST_ErrorCode_t Error = ST_NO_ERROR;
    LSTEM_InstanceData_t     *Instance;

    Instance = (LSTEM_InstanceData_t *)Handle;

    Config->Status       = Instance->Config.Status;
    Config->Polarization = Instance->Config.Polarization;
    Config->ToneState    = Instance->Config.ToneState;

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