Exemplo n.º 1
0
void I2C_SetConfig(I2cConfigData_t* config) {
	if (config->IsEnabled) {
		SFRPAGE = 0x00;
		TH0 = config->TH0Val;
		I2C0_reset();
		I2C_Enable();
		I2C0_init(I2C0_TIMER0, true);
	} else {
		I2C_Disable();
	}
}
void I2C_SetConfig(I2cConfigData_t* config)
{
	if(config->IsEnabled)
	{
		  I2C0_reset();
		I2C_Enable();
		I2C0_init(I2C0_TIMER1, true);
	} else {
		I2C_Disable();
	}
}
Exemplo n.º 3
0
/*****************************************************************************
 函 数 名  : I2CWrite
 功能描述  : 支持多字节写,目前支持对控制器1连接的设备的写,即E2PROM
 输入参数  : 无
 输出参数  : 无
 返 回 值  : void
 调用函数  :
 被调函数  :

 修改历史      :
         
*****************************************************************************/
EFI_STATUS
EFIAPI
I2CWrite(I2C_DEVICE *I2cInfo, UINT16 InfoOffset, UINT32 ulLength, UINT8 *pBuf)
{
    UINT32 ulFifo;
    UINT32 ulTimes = 0;
    UINT32  Idx;
    UINTN  Base;

    //参数判断
    if(I2cInfo->Port >= I2C_PORT_MAX)
    {
        return EFI_INVALID_PARAMETER;
    }

    Base = PlatformGetI2cBase(I2cInfo->Socket, I2cInfo->Port);

    (VOID)I2C_Enable(I2cInfo->Socket, I2cInfo->Port);

    I2C_SetTarget(I2cInfo->Socket,I2cInfo->Port,I2cInfo->SlaveDeviceAddress);

    ulFifo = I2C_GetTxStatus(I2cInfo->Socket,I2cInfo->Port);
    while(0 != ulFifo)
    {
        I2C_Delay(2);
        if(++ulTimes > I2C_READ_TIMEOUT)
        {
            (VOID)I2C_Disable(I2cInfo->Socket, I2cInfo->Port);
            return EFI_TIMEOUT;
        }
        ulFifo = I2C_GetTxStatus(I2cInfo->Socket,I2cInfo->Port);
    }
    
    //往总线上发送写时序
    if(I2cInfo->DeviceType)
    {
        I2C_REG_WRITE(Base + I2C_DATA_CMD_OFFSET, (InfoOffset >> 8) & 0xff);
        I2C_REG_WRITE(Base + I2C_DATA_CMD_OFFSET, InfoOffset & 0xff);
    }
Exemplo n.º 4
0
/*****************************************************************************
 函 数 名  :  I2CInit
 功能描述  : 初始化,以便读取SPD信息
 输入参数  : void
 输出参数  : 无
 返 回 值  :
 调用函数  :
 被调函数  :

 修改历史      :
*****************************************************************************/
EFI_STATUS
EFIAPI
I2CInit(UINT32 Socket, UINT32 Port, SPEED_MODE SpeedMode)
{
    I2C0_CON_U              I2cControlReg;
    I2C0_SS_SCL_HCNT_U      I2cStandardSpeedSclHighCount;
    I2C0_SS_SCL_LCNT_U      I2cStandardSpeedSclLowCount;
    I2C0_RX_TL_U            I2cRxFifoReg;
    I2C0_TX_TL_U            I2cTxFifoReg;
    I2C0_INTR_MASK_U        I2cIntrMask;
    EFI_STATUS              Status;

    UINTN Base = PlatformGetI2cBase(Socket, Port);

    if((Socket >= MAX_SOCKET) || (Port >= I2C_PORT_MAX) || (SpeedMode >= SPEED_MODE_MAX)){
        return EFI_INVALID_PARAMETER;
    }

    //关闭I2C
    Status = I2C_Disable(Socket,Port);
    if(EFI_ERROR(Status))
    {
        return EFI_DEVICE_ERROR;
    }

    //配置传输模式、速率等
    I2C_REG_READ(Base + I2C_CON_OFFSET, I2cControlReg.Val32);
    I2cControlReg.bits.master = 1;      //主模式使能,默认值
    I2cControlReg.bits.spedd = 0x1;    //标准模式,标准模式下I2C总线的速率为100kb/s
    I2cControlReg.bits.restart_en = 1;  //主模式下restart指令发送使能
    I2cControlReg.bits.slave_disable = 1;   //从模式不使能
    I2C_REG_WRITE(Base + I2C_CON_OFFSET,I2cControlReg.Val32);

    //设置I2C总线时钟周期
    if(Normal == SpeedMode)
    {
        I2C_REG_READ(Base + I2C_SS_SCL_HCNT_OFFSET,I2cStandardSpeedSclHighCount.Val32);
        I2cStandardSpeedSclHighCount.bits.ic_ss_scl_hcnt = I2C_SS_SCLHCNT;
        I2C_REG_WRITE(Base + I2C_SS_SCL_HCNT_OFFSET, I2cStandardSpeedSclHighCount.Val32);
        I2C_REG_READ(Base + I2C_SS_SCL_LCNT_OFFSET, I2cStandardSpeedSclLowCount.Val32);
        I2cStandardSpeedSclLowCount.bits.ic_ss_scl_lcnt = I2C_SS_SCLLCNT;
        I2C_REG_WRITE(Base + I2C_SS_SCL_LCNT_OFFSET, I2cStandardSpeedSclLowCount.Val32);
    }
    else
    {
        I2C_REG_READ(Base + I2C_FS_SCL_HCNT_OFFSET,I2cStandardSpeedSclHighCount.Val32);
        I2cStandardSpeedSclHighCount.bits.ic_ss_scl_hcnt = I2C_SS_SCLHCNT; 
        I2C_REG_WRITE(Base + I2C_FS_SCL_HCNT_OFFSET, I2cStandardSpeedSclHighCount.Val32);
        I2C_REG_READ(Base + I2C_FS_SCL_LCNT_OFFSET, I2cStandardSpeedSclLowCount.Val32);
        I2cStandardSpeedSclLowCount.bits.ic_ss_scl_lcnt = I2C_SS_SCLLCNT; 
        I2C_REG_WRITE(Base + I2C_FS_SCL_LCNT_OFFSET, I2cStandardSpeedSclLowCount.Val32);
    }

    //设置发送、接收FIFO阈值
    I2C_REG_READ(Base + I2C_RX_TL_OFFSET, I2cRxFifoReg.Val32);
    I2cRxFifoReg.bits.rx_tl = I2C_TXRX_THRESHOLD;
    I2C_REG_WRITE(Base + I2C_RX_TL_OFFSET, I2cRxFifoReg.Val32);
    I2C_REG_READ(Base + I2C_TX_TL_OFFSET,I2cTxFifoReg.Val32);
    I2cTxFifoReg.bits.tx_tl = I2C_TXRX_THRESHOLD;
    I2C_REG_WRITE(Base + I2C_TX_TL_OFFSET, I2cTxFifoReg.Val32);

    //禁止所有中断
    I2C_REG_READ(Base + I2C_INTR_MASK_OFFSET, I2cIntrMask.Val32);
    I2cIntrMask.Val32 = 0x0;
    I2C_REG_WRITE(Base + I2C_INTR_MASK_OFFSET, I2cIntrMask.Val32);

    //使能I2C
    Status = I2C_Enable(Socket,Port);
    if(EFI_ERROR(Status))
    {
        return EFI_DEVICE_ERROR;
    }

    return EFI_SUCCESS;
}
Exemplo n.º 5
0
Arquivo: I2CLib.c Projeto: joyxu/uefi
EFI_STATUS
EFIAPI
I2CInit(UINT32 Socket, UINT32 Port, SPEED_MODE SpeedMode)
{
    I2C0_CON_U              I2cControlReg;
    I2C0_SS_SCL_HCNT_U      I2cStandardSpeedSclHighCount;
    I2C0_SS_SCL_LCNT_U      I2cStandardSpeedSclLowCount;
    I2C0_RX_TL_U            I2cRxFifoReg;
    I2C0_TX_TL_U            I2cTxFifoReg;
    I2C0_INTR_MASK_U        I2cIntrMask;
    EFI_STATUS              Status;

    UINTN Base = GetI2cBase(Socket, Port);

    if((Socket >= MAX_SOCKET) || (Port >= I2C_PORT_MAX) || (SpeedMode >= SPEED_MODE_MAX)){
        return EFI_INVALID_PARAMETER;
    }

  
    Status = I2C_Disable(Socket,Port);
    if(EFI_ERROR(Status))
    {
        return EFI_DEVICE_ERROR;
    }

   
    I2C_REG_READ(Base + I2C_CON_OFFSET, I2cControlReg.Val32);
    I2cControlReg.bits.master = 1;     
    I2cControlReg.bits.spedd = 0x1;   
    I2cControlReg.bits.restart_en = 1; 
    I2cControlReg.bits.slave_disable = 1;   
    I2C_REG_WRITE(Base + I2C_CON_OFFSET,I2cControlReg.Val32);

   
    if(Normal == SpeedMode)
    {
        I2C_REG_READ(Base + I2C_SS_SCL_HCNT_OFFSET,I2cStandardSpeedSclHighCount.Val32);
        I2cStandardSpeedSclHighCount.bits.ic_ss_scl_hcnt = I2C_SS_SCLHCNT;
        I2C_REG_WRITE(Base + I2C_SS_SCL_HCNT_OFFSET, I2cStandardSpeedSclHighCount.Val32);
        I2C_REG_READ(Base + I2C_SS_SCL_LCNT_OFFSET, I2cStandardSpeedSclLowCount.Val32);
        I2cStandardSpeedSclLowCount.bits.ic_ss_scl_lcnt = I2C_SS_SCLLCNT;
        I2C_REG_WRITE(Base + I2C_SS_SCL_LCNT_OFFSET, I2cStandardSpeedSclLowCount.Val32);
    }
    else
    {
        I2C_REG_READ(Base + I2C_FS_SCL_HCNT_OFFSET,I2cStandardSpeedSclHighCount.Val32);
        I2cStandardSpeedSclHighCount.bits.ic_ss_scl_hcnt = I2C_SS_SCLHCNT; 
        I2C_REG_WRITE(Base + I2C_FS_SCL_HCNT_OFFSET, I2cStandardSpeedSclHighCount.Val32);
        I2C_REG_READ(Base + I2C_FS_SCL_LCNT_OFFSET, I2cStandardSpeedSclLowCount.Val32);
        I2cStandardSpeedSclLowCount.bits.ic_ss_scl_lcnt = I2C_SS_SCLLCNT; 
        I2C_REG_WRITE(Base + I2C_FS_SCL_LCNT_OFFSET, I2cStandardSpeedSclLowCount.Val32);
    }

   
    I2C_REG_READ(Base + I2C_RX_TL_OFFSET, I2cRxFifoReg.Val32);
    I2cRxFifoReg.bits.rx_tl = I2C_TXRX_THRESHOLD;
    I2C_REG_WRITE(Base + I2C_RX_TL_OFFSET, I2cRxFifoReg.Val32);
    I2C_REG_READ(Base + I2C_TX_TL_OFFSET,I2cTxFifoReg.Val32);
    I2cTxFifoReg.bits.tx_tl = I2C_TXRX_THRESHOLD;
    I2C_REG_WRITE(Base + I2C_TX_TL_OFFSET, I2cTxFifoReg.Val32);

   
    I2C_REG_READ(Base + I2C_INTR_MASK_OFFSET, I2cIntrMask.Val32);
    I2cIntrMask.Val32 = 0x0;
    I2C_REG_WRITE(Base + I2C_INTR_MASK_OFFSET, I2cIntrMask.Val32);

    
    Status = I2C_Enable(Socket,Port);
    if(EFI_ERROR(Status))
    {
        return EFI_DEVICE_ERROR;
    }

    return I2cLibRuntimeSetup (Socket, Port);
}