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Diffstat (limited to 'Core/EM/ACPI/LM75.ASL')
| -rw-r--r-- | Core/EM/ACPI/LM75.ASL | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/Core/EM/ACPI/LM75.ASL b/Core/EM/ACPI/LM75.ASL new file mode 100644 index 0000000..afffa64 --- /dev/null +++ b/Core/EM/ACPI/LM75.ASL @@ -0,0 +1,179 @@ +//********************************************************************** +//********************************************************************** +//** ** +//** (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 !!! +//**********************************************************************; |