/**
Issue command to set mouse's scaling.
@param Scaling value of scaling
@return Status of command issuing.
**/
EFI_STATUS
PS2MouseSetScaling (
IN MOUSE_SF Scaling
)
{
//
// Send auxiliary command to set mouse scaling data
//
return Out8042AuxCommand (Scaling == Scaling1 ? SETSF1_CMD : SETSF2_CMD, FALSE);
}
/**
Issue command to enable Ps2 mouse.
@return Status of command issuing.
**/
EFI_STATUS
PS2MouseEnable (
VOID
)
{
//
// Send auxiliary command to enable mouse
//
return Out8042AuxCommand (ENABLE_CMD, FALSE);
}
/**
Issue command to enable Ps2 mouse.
@param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL
@return Status of command issuing.
**/
EFI_STATUS
PS2MouseEnable (
IN EFI_ISA_IO_PROTOCOL *IsaIo
)
{
//
// Send auxiliary command to enable mouse
//
return Out8042AuxCommand (IsaIo, ENABLE_CMD, FALSE);
}
/**
Issue command to set mouse's scaling.
@param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL
@param Scaling value of scaling
@return Status of command issuing.
**/
EFI_STATUS
PS2MouseSetScaling (
IN EFI_ISA_IO_PROTOCOL *IsaIo,
IN MOUSE_SF Scaling
)
{
UINT8 Command;
Command = (UINT8) (Scaling == Scaling1 ? SETSF1_CMD : SETSF2_CMD);
//
// Send auxiliary command to set mouse scaling data
//
return Out8042AuxCommand (IsaIo, Command, FALSE);
}
/**
Issue command to set mouse's resolution.
@param Resolution value of resolution
@return Status of command issuing.
**/
EFI_STATUS
PS2MouseSetResolution (
IN MOUSE_RE Resolution
)
{
EFI_STATUS Status;
//
// Send auxiliary command to set mouse resolution
//
Status = Out8042AuxCommand (SETRE_CMD, FALSE);
if (EFI_ERROR (Status)) {
return Status;
}
Status = Out8042AuxData (ResolutionTbl[Resolution]);
return Status;
}
/**
Issue command to set mouse's sample rate
@param SampleRate value of sample rate
@return Status of command issuing.
**/
EFI_STATUS
PS2MouseSetSampleRate (
IN MOUSE_SR SampleRate
)
{
EFI_STATUS Status;
//
// Send auxiliary command to set mouse sample rate
//
Status = Out8042AuxCommand (SETSR_CMD, FALSE);
if (EFI_ERROR (Status)) {
return Status;
}
Status = Out8042AuxData (SampleRateTbl[SampleRate]);
return Status;
}
/**
Issue command to reset keyboard.
@return Status of command issuing.
**/
EFI_STATUS
PS2MouseReset (
VOID
)
{
EFI_STATUS Status;
UINT8 Data;
Status = Out8042AuxCommand (RESET_CMD, FALSE);
if (EFI_ERROR (Status)) {
return Status;
}
Status = In8042AuxData (&Data);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Check BAT Complete Code
//
if (Data != PS2MOUSE_BAT1) {
return EFI_DEVICE_ERROR;
}
Status = In8042AuxData (&Data);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Check BAT Complete Code
//
if (Data != PS2MOUSE_BAT2) {
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
I/O work flow of outing 8042 Aux command.
@param Command Aux I/O command
@param Resend Whether need resend the Aux command.
@retval EFI_SUCCESS Success to excute I/O work flow
@retval EFI_TIMEOUT Keyboard controller time out.
**/
EFI_STATUS
Out8042AuxCommand (
IN UINT8 Command,
IN BOOLEAN Resend
)
{
EFI_STATUS Status;
UINT8 Data;
//
// Wait keyboard controller input buffer empty
//
Status = WaitInputEmpty (TIMEOUT);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Send write to auxiliary device command
//
IoWrite8 (KBC_CMD_STS_PORT, WRITE_AUX_DEV);
Status = WaitInputEmpty (TIMEOUT);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Send auxiliary device command
//
IoWrite8 (KBC_DATA_PORT, Command);
//
// Read return code
//
Status = In8042AuxData (&Data);
if (EFI_ERROR (Status)) {
return Status;
}
if (Data == PS2_ACK) {
//
// Receive mouse acknowledge, command send success
//
return EFI_SUCCESS;
} else if (Resend) {
//
// Resend fail
//
return EFI_DEVICE_ERROR;
} else if (Data == PS2_RESEND) {
//
// Resend command
//
Status = Out8042AuxCommand (Command, TRUE);
if (EFI_ERROR (Status)) {
return Status;
}
} else {
//
// Invalid return code
//
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}