Advanced Configuration and Power Interface Specification

ACPI-Defined Devices and Device-Specific Objects
H, 8,
Mi,8,
S, 8,
P, 8,
AccessAs(BufferAcc, AttribWord),
Ms, 8,
Tz, 8,
AccessAs(BufferAcc, AttribByte),
Dl, 8,
P2, 8
}
}
Method (_GCP, 0x0, NotSerialized)
{
Return(0x4)
//Implements Real Time interface, but no alarms
}
Method(_GRT, 0x0, NotSerialized)
{
If(LNotEqual(\_SB.TC1.AVBL, 1)) // Verify that SPB OpRegion is available for this
access
{
Return(0)
}
Name(BUFF, Buffer(4){})
// Create SerialBus data buffer as BUFF
CreateByteField(BUFF, 0x00, STAT) // STAT = Status (Byte)
CreateWordField(BUFF, 0x02, DATA) // DATA = Data (Byte)
Name(BUF2,Buffer(0x10){}) // Create buffer to hold the Real Time structure as BUF2
CreateWordField(BUF2, 0x0,Y) //year
CreateByteField(BUF2,0x2,M)
//Month
...
CreateByteField(BUF2,0xc,Dl) //Dl
CreateByteField(BUF2,0xd,P2) //Pad2
Store(\_SB.I2C1.Y, BUFF) //Get each member from the OpRegion and store in the structure
Store(DATA,Y)
Store(\_SB.I2C1.M, BUFF)
Store(DATA,M)
...
Store(\_SB.I2C1.Dl, BUFF)
Store(DATA,Dl)
Store(\_SB.I2C1.P2, BUFF)
Store(DATA,P2)
Return(BUF2)
// Success -> return what was last in buffer
}
Method(_SRT,0x1, NotSerialized)
{
Name(BUFF, Buffer(4){})
// Create SerialBus data buffer as BUFF
CreateByteField(BUFF, 0x00, STAT) // STAT = Status (Byte)
CreateWordField(BUFF, 0x02, DATA) // DATA = Data (Byte)
// Verify that SPB OpRegion is available for this access
If(LNotEqual(\_SB.I2C1.AVBL, 1))
{
Return(0)
}
CreateWordField(Arg0,0x0,Y) //Create Fields to access each member of the input data
...
CreateByteField(Arg0,0xd,P2)
Store(Store(Y, \_SB.I2C1.Y), BUFF)
{
If(LEqual(STAT, 0x00))
//Store each input member into the hardware, and
//set the transaction status into BUFF
//Transaction was _NOT_successful
Version 6.0 551