39   EFI_PCI_IO_PROTOCOL    *PciIo,  in I2cOutb()  argument
44   PciIo->Io.Write (  in I2cOutb()
45              PciIo,  in I2cOutb()
64   EFI_PCI_IO_PROTOCOL    *PciIo,  in I2cInb()  argument
70   PciIo->Io.Read (  in I2cInb()
71              PciIo,  in I2cInb()
93   EFI_PCI_IO_PROTOCOL    *PciIo,  in I2cPinRead()  argument
97   I2cOutb (PciIo, SEQ_ADDRESS_REGISTER, I2C_CONTROL);  in I2cPinRead()
98   return (UINT8) ((I2cInb (PciIo, SEQ_DATA_REGISTER) >> Bit ) & 0xfe);  in I2cPinRead()
112   EFI_PCI_IO_PROTOCOL    *PciIo,  in I2cPinWrite()  argument
118   I2cOutb (PciIo, SEQ_ADDRESS_REGISTER, I2C_CONTROL);  in I2cPinWrite()
119   Byte = (UINT8) (I2cInb (PciIo, SEQ_DATA_REGISTER) & (UINT8) ~(1 << Bit)) ;  in I2cPinWrite()
121   I2cOutb (PciIo, SEQ_DATA_REGISTER, (UINT8) (Byte | 0x40));  in I2cPinWrite()
146   EFI_PCI_IO_PROTOCOL    *PciIo,  in I2cSendByte()  argument
155     I2cPinWrite (PciIo, I2CDAT_OUT, (UINT8) (Data >> (7 - Index)));  in I2cSendByte()
156     I2cPinWrite (PciIo, I2CCLK_OUT, 1);  in I2cSendByte()
158     I2cPinWrite (PciIo, I2CCLK_OUT, 0);  in I2cSendByte()
171   EFI_PCI_IO_PROTOCOL    *PciIo  in I2cReceiveByte()  argument
182     I2cPinWrite (PciIo, I2CCLK_OUT, 1);  in I2cReceiveByte()
185     Data = (UINT8) (Data | I2cPinRead (PciIo, I2CDAT_IN));  in I2cReceiveByte()
186     I2cPinWrite (PciIo, I2CCLK_OUT, 0);  in I2cReceiveByte()
200   EFI_PCI_IO_PROTOCOL    *PciIo  in I2cWaitAck()  argument
206   I2cPinWrite (PciIo, I2CDAT_OUT, 1);  in I2cWaitAck()
207   I2cPinWrite (PciIo, I2CCLK_OUT, 1);  in I2cWaitAck()
209   if (I2cPinRead (PciIo, I2CDAT_IN) == 0) {  in I2cWaitAck()
210     I2cPinWrite (PciIo, I2CDAT_OUT, 1);  in I2cWaitAck()
225   EFI_PCI_IO_PROTOCOL    *PciIo  in I2cSendAck()  argument
228   I2cPinWrite (PciIo, I2CCLK_OUT, 1);  in I2cSendAck()
229   I2cPinWrite (PciIo, I2CDAT_OUT, 1);  in I2cSendAck()
230   I2cPinWrite (PciIo, I2CDAT_OUT, 0);  in I2cSendAck()
231   I2cPinWrite (PciIo, I2CCLK_OUT, 0);  in I2cSendAck()
242   EFI_PCI_IO_PROTOCOL    *PciIo  in I2cStart()  argument
248   I2cPinWrite (PciIo, I2CCLK_OUT, 1);  in I2cStart()
249   I2cPinWrite (PciIo, I2CDAT_OUT, 1);  in I2cStart()
253   I2cPinWrite (PciIo, I2CDAT_OUT, 0);  in I2cStart()
254   I2cPinWrite (PciIo, I2CCLK_OUT, 0);  in I2cStart()
265   EFI_PCI_IO_PROTOCOL    *PciIo  in I2cStop()  argument
271   I2cPinWrite (PciIo, I2CDAT_OUT, 0);  in I2cStop()
272   I2cPinWrite (PciIo, I2CCLK_OUT, 1);  in I2cStop()
273   I2cPinWrite (PciIo, I2CDAT_OUT, 1);  in I2cStop()
294   EFI_PCI_IO_PROTOCOL    *PciIo,  in I2cReadByte()  argument
305   I2cStart (PciIo);  in I2cReadByte()
310   I2cSendByte (PciIo, (UINT8) (DeviceAddress & 0xfe));  in I2cReadByte()
315   if (I2cWaitAck (PciIo) == FALSE) {  in I2cReadByte()
322   I2cSendByte (PciIo, RegisterAddress);  in I2cReadByte()
327   if (I2cWaitAck (PciIo) == FALSE) {  in I2cReadByte()
334   I2cSendByte (PciIo, (UINT8) (DeviceAddress | 0x01));  in I2cReadByte()
339   if (I2cWaitAck (PciIo) == FALSE) {  in I2cReadByte()
346   *Data = I2cReceiveByte (PciIo);  in I2cReadByte()
351   I2cSendAck (PciIo);  in I2cReadByte()
356   I2cStop (PciIo);  in I2cReadByte()
379   EFI_PCI_IO_PROTOCOL    *PciIo,  in I2cWriteByte()  argument
387   I2cStart (PciIo);  in I2cWriteByte()
391   I2cSendByte (PciIo, (UINT8) (DeviceAddress & 0xfe));  in I2cWriteByte()
396   if (I2cWaitAck (PciIo) == FALSE) {  in I2cWriteByte()
403   I2cSendByte (PciIo, RegisterAddress);  in I2cWriteByte()
408   if (I2cWaitAck (PciIo) == FALSE) {  in I2cWriteByte()
415   I2cSendByte (PciIo, *Data);  in I2cWriteByte()
420   if (I2cWaitAck (PciIo) == FALSE) {  in I2cWriteByte()
427   I2cStop (PciIo);  in I2cWriteByte()