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//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2009, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
// $Header: /Alaska/BIN/Modules/ACPI/Template/Core/LM75.ASL 2 3/26/09 4:53p Oleksiyy $
//
// $Revision: 2 $
//
// $Date: 3/26/09 4:53p $
//**********************************************************************;
// Revision History
// ----------------
// $Log: /Alaska/BIN/Modules/ACPI/Template/Core/LM75.ASL $
//
// 2 3/26/09 4:53p Oleksiyy
// New ACPI Core implementation - improves logic, execution time and
// memory usage of ACPI module.
//
// 1 3/24/05 5:01p Sivagarn
//
// 1 2/03/05 6:42p Sivagarn
// 0ABHI001 Check in
//
// 1 7/27/04 2:48p Yakovlevs
//
// 2 9/06/02 10:53a Alexp
// Add SourceSafe headers to all core asl files
//
//
//;**********************************************************************;
//**********************************************************************;
// ASL interface to LM75 thermal sensor over SMBus
//**********************************************************************;
// change LM75 trip points
Method(TCHG, 0) {
Store(RBYT(TSAD, 0x00), Local0) // Read Current temp
/*
If(LGreaterEqual(Local0,TMAX)) {
Store(TCRT, Local1) // Tcrt
}
Else {
If(LGreaterEqual(Local0,TMIN)) {
Store(TMAX, Local1) // Thigh
}
Else {
Store(TMIN, Local1) // TLow
}
}
STOS(0,Local1) // Set Thigh
STHY(0, Add(Local0, 2)) // Set TLow T + 2.0C to arm the Thermal int
// Subtract(TMIN, 5, Local2) // Set Thyst as TMIN-5.0
// Add(Local0, 0x5, Local1) // Set Thigh T + 5.0 C
Subtract(Local0, 0x1, Local2) // Set Tlow T - 1.0 C
Subtract(TMIN, 0x5, Local3) // Set Tlow TMIN - 5.0 C
// If(LGreater(Local2,Local3))
// {
// Store(Local3, Local2)
// }
STHY(0,Local2) // Set TLow
*/
STOS(TCRT) // Set Thigh TCRT
STHY(Subtract(Local0, 5)) // Set TLow TMIN-5.0C
Notify(\_TZ.THRM, 0x81) // Notify of trip point change
}
// Set configuration register
Method(SCFG, 1) {
// Arg0 = configuration byte
WBYT(TSAD, 0x01, Arg0)
}
// Set Tos register
Method(STOS, 1) {
// Arg0 = temperature word data
// Set pointer register (occupy the command byte) to 0x03
// Somehow LM75 wants to send out the MSB byte first !
WWRD(TSAD, 0x03, Arg0)
}
// Set Thyst register
Method(STHY, 1) {
// Arg0 = temperature word data
// Set pointer register (occupy the command byte) to 0x02
// Somehow LM75 wants to send out the MSB byte first !
WWRD(TSAD, 0x02, Arg0)
}
// Read temperature register
Method(RTMP, 0) {
// Set pointer register (occupy the command byte) to 0x00
Store(RWRD(TSAD, 0x00), Local0)
Store(Local0, DBG8)
// Somehow LM75 returns right byte first!
If(Not(Local0)) // Read command completed
{
Return( Local0 )
}
Else // Read command failed
{
Store("_TMP Read ERROR", Debug)
Return(Add(TMIN, 2)) // MIN trip point + 2.0 C
}
} // Method(RTMP)
// LM75 Thermal interrupt handler
Method(THDL,0) {
//**********************************************************************;
// Trip point handler
// TPOL status bit applys for PIIX4 based design only
// PMBS is an ACPI I/O Base address
// PM controller IO space
OperationRegion(PMRG, SystemIO, PMBS, 0x40)
Field(PMRG,ByteAcc,NoLock,Preserve)
{
Offset(0x28),
,2,
TPOL,1, // 28.2h Thermal Polarity bit
}
If(TPOL)
// Temp goes up, Tos threshold being crossed
{
\GFAN._ON() // Turn FAN On
}
Else
// Temp goes down, Thyst threshold being crossed
{
\GFAN._OFF() // Turn FAN Off
}
TCHG() // Reevaluate Thigh/TLow for LM75
Not(TPOL,TPOL) // Toggle the Polarity pin
}
//**********************************************************************;
// *****************************************************************;
// *****************************************************************;
// ** **;
// ** (C)Copyright 1985-1996, American Megatrends, Inc. **;
// ** **;
// ** All Rights Reserved. **;
// ** **;
// ** 6145-F Northbelt Pkwy, Norcross, GA 30071 **;
// ** **;
// ** Phone (770)-246-8600 **;
// ** **;
// *****************************************************************;
// *****************************************************************;
//**********************************************************************;
// DON'T CHANGE ANY CODE UNLESS REQUIRED !!!
//**********************************************************************;
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