omap30_tcif.c

有关于USB的一些主机端驱动

 SetField(temp,TC_EMIFS_CS0_CONFIG_FCLKDIV,FlashClockDivider); 

 switch(SlowChipSelect)
     {
         case TCIF_Slow_nCS0:
             {
             TC_EMIFS_CS0_CONFIG=temp;
             break;
             }

         case TCIF_Slow_nCS1:
             {
             TC_EMIFS_CS1_CONFIG=temp;
             break;
             }

         case TCIF_Slow_nCS2:
             {
             TC_EMIFS_CS2_CONFIG=temp;
             break;
             }

         case TCIF_Slow_nCS3:
             {
             TC_EMIFS_CS3_CONFIG=temp;
             break;
             }

         default :
             {
             break;
             }
     }

}

//-------------------------------------------------------------------------------
// NAME        : TCIF_EmifFastConfigReg
// DESCRIPTION : Initialize the fast Config register
// PARAMETERS  :    ClockToggle                SDRAM_CLOCK_DISABLE
//                                             SDRAM_CLOCK_ENABLE
//                  PowerDownToggle            POWER_DOWN_DISABLE
//                                             POWER_DOWN_ENABLE
//                  SdramFrequency             SDRAM_FREQ_0
//                                             SDRAM_FREQ_1
//                                             SDRAM_FREQ_2
//                                             SDRAM_FREQ_3
//                  AutoRefreshCounter         a value  =((64 ms / 4096)/F x BurstValue )-400
//                  SdramType                  SDRAMTYPE_16MBITS_BUS8_2BANKS
//                                             SDRAMTYPE_16MBITS_BUS16_2BANKS
//                                             SDRAMTYPE_64MBITS_BUS8_2BANKS
//                                             SDRAMTYPE_64MBITS_BUS8_4BANKS
//                                             SDRAMTYPE_64MBITS_BUS16_2BANKS
//                                             SDRAMTYPE_64MBITS_BUS16_4BANKS
//                                             SDRAMTYPE_128MBITS_BUS8_4BANKS
//                                             SDRAMTYPE_128MBITS_BUS16_4BANKS
//                                             SDRAMTYPE_256BITS_BUS8_4BANKS
//                                             SDRAMTYPE_256MBITS_BUS16_4BANKS
// RETURN VALUE: None
// LIMITATIONS : None
//-------------------------------------------------------------------------------
void TCIF_EmifFastConfigReg (BOOL                    ClockToggle,
                             BOOL                    PowerDownToggle,
                             UWORD8                  SdramFrequency,
                             UWORD16                 AutoRefreshCounter,
                             UWORD8                  SdramType)
{
UWORD32 temp;

 temp=TC_EMIFF_SDRAM_CONFIG;
 SetField(temp,TC_EMIFF_SDRAM_CONFIG_CLK,ClockToggle); 
 SetField(temp,TC_EMIFF_SDRAM_CONFIG_PWD,PowerDownToggle); 
 SetField(temp,TC_EMIFF_SDRAM_CONFIG_SDRAMFREQ,SdramFrequency); 
 SetField(temp,TC_EMIFF_SDRAM_CONFIG_ARCV,AutoRefreshCounter); 
 SetField(temp,TC_EMIFF_SDRAM_CONFIG_SDRAMTYPE,SdramType); 
 TC_EMIFF_SDRAM_CONFIG=temp;

}

//-------------------------------------------------------------------------------
// NAME        : TCIF_EmifFastRefreshMode
// DESCRIPTION : Initialize the Refresh mode of the SDRAM
// PARAMETERS  :    RefreshMode                NO_REFFRESH
//                                             AUTOREFFRESH_ENABLE_ONECMD
//                                             AUTOREFFRESH_ENABLE_BURST4
//                                             AUTOREFFRESH_ENABLE_BURST16
//                                             SELF_REFFRESH_ENABLE
// RETURN VALUE: None
// LIMITATIONS : None
//-------------------------------------------------------------------------------
void TCIF_EmifFastRefreshMode(UWORD8 RefreshMode)
{
UWORD32 temp;

 temp=TC_EMIFF_SDRAM_CONFIG;
 switch(RefreshMode)
     {
         case AUTOREFFRESH_ENABLE_ONECMD:
             {
             SetField(temp,TC_EMIFF_SDRAM_CONFIG_CLK,SDRAM_CLOCK_ENABLE); 
	     SetField(temp,TC_EMIFF_SDRAM_CONFIG_ARE,AUTOREFFRESH_ENABLE_ONECMD); 
	     SetField(temp,TC_EMIFF_SDRAM_CONFIG_SLRF,SELF_REFFRESH_DISABLE_BIT); 
             break;
             }

         case AUTOREFFRESH_ENABLE_BURST4:
             {
             SetField(temp,TC_EMIFF_SDRAM_CONFIG_CLK,SDRAM_CLOCK_ENABLE); 
	     SetField(temp,TC_EMIFF_SDRAM_CONFIG_ARE,AUTOREFFRESH_ENABLE_BURST4); 
	     SetField(temp,TC_EMIFF_SDRAM_CONFIG_SLRF,SELF_REFFRESH_DISABLE_BIT); 
             break;
             }

         case AUTOREFFRESH_ENABLE_BURST16:
             {
             SetField(temp,TC_EMIFF_SDRAM_CONFIG_CLK,SDRAM_CLOCK_ENABLE); 
             SetField(temp,TC_EMIFF_SDRAM_CONFIG_ARE,AUTOREFFRESH_ENABLE_BURST16); 
	     SetField(temp,TC_EMIFF_SDRAM_CONFIG_SLRF,SELF_REFFRESH_DISABLE_BIT); 
             break;
             }

         case SELF_REFFRESH_ENABLE:
             {
             SetField(temp,TC_EMIFF_SDRAM_CONFIG_CLK,SDRAM_CLOCK_DISABLE); 
             SetField(temp,TC_EMIFF_SDRAM_CONFIG_ARE,AUTOREFFRESH_DISABLE); 
	     SetField(temp,TC_EMIFF_SDRAM_CONFIG_SLRF,SELF_REFFRESH_ENABLE_BIT); 
             break;
             }
	     
         case NO_REFFRESH:
             {
             SetField(temp,TC_EMIFF_SDRAM_CONFIG_CLK,SDRAM_CLOCK_DISABLE); 
             SetField(temp,TC_EMIFF_SDRAM_CONFIG_ARE,AUTOREFFRESH_DISABLE); 
	     SetField(temp,TC_EMIFF_SDRAM_CONFIG_SLRF,SELF_REFFRESH_DISABLE_BIT); 
             break;
             }
	     
         default :
             {
             break;
             }
     }
 TC_EMIFF_SDRAM_CONFIG=temp;
}

//-------------------------------------------------------------------------------
// NAME        : TCIF_EmifFastMRSReg
// DESCRIPTION : Initialize the Cas latency
// SYNOPSYS    : void TCIF_EmifFastMRSReg(UWORD8 CasLatency)
// PARAMETERS  :   CasLatency                  CAS_LATENCY_1
//                                             CAS_LATENCY_2
//                                             CAS_LATENCY_3
// RETURN VALUE: None
// LIMITATIONS : None
//-------------------------------------------------------------------------------
void TCIF_EmifFastMRSReg(UWORD8 CasLatency)
{
 UWORD32 temp;
 
 temp=TC_EMIFF_MRS;
 SetField(temp,TC_EMIFF_MRS_CASL,CasLatency); 
 TC_EMIFF_MRS=temp;
}

//-------------------------------------------------------------------------------
// NAME        : TCIF_EnableDSPEndianismTranslation
// DESCRIPTION : Switch on or off DSP endianism translation and
//               select Byte swap or Word swap
// PARAMETERS  : stateConv    ENABLE or DISABLE
//               Wordswap     DSP_ENDIANISM_WORD_SWAP
//                            DSP_ENDIANISM_BYTE_SWAP
// RETURN VALUE: None
// LIMITATIONS : None
//-------------------------------------------------------------------------------
 void TCIF_EnableDSPEndianismTranslation(BOOL stateConv, BOOL Wordswap)
 {
 UWORD32 temp;

 temp=TC_ENDIANISM;
 SetField(temp,TC_ENDIANISM_EN,stateConv);
 SetField(temp,TC_ENDIANISM_SWAP,Wordswap);
 TC_ENDIANISM=temp;
 }