src/ec/lenovo/h8/acpi/thermal.asl

/*
 * This file is part of the coreboot project.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <arch/x86/acpi/statdef.asl>

Scope(\_TZ)
{
#if defined (EC_LENOVO_H8_ME_WORKAROUND)
	Name (MEB1, 0)
	Name (MEB2, 0)
#endif

	Method(C2K, 1, NotSerialized)
	{
		Multiply(Arg0, 10, Local0)
		Add (Local0, 2732, Local0)
		if (LLessEqual(Local0, 2732)) {
			Return (3000)
		}

		if (LGreater(Local0, 4012)) {
			Return (3000)
		}
		Return (Local0)
	}

	ThermalZone(THM0)
	{
		/* Thermal zone polling frequency: 10 seconds */
		Name (_TZP, 100)

		/* Thermal sampling period for passive cooling: 10 seconds */
		Name (_TSP, 100)

		/* Coefficients for passive cooling */
		Name (_TC1, 0x02)
		Name (_TC2, 0x05)

#if !IS_ENABLED(CONFIG_CPU_INTEL_MODEL_206AX) && \
	!IS_ENABLED(CONFIG_CPU_INTEL_MODEL_2065X) && \
	!IS_ENABLED(CONFIG_CPU_INTEL_MODEL_306AX)
	/* Generated by acpigen */
External (\PPKG, MethodObj)
#endif
		/* Processors used for passive cooling */
		Method (_PSL, 0, Serialized)
		{
			Return (\PPKG ())
		}

		/* Get critical temperature in degree celsius */
		Method (GCRT, 0, NotSerialized) {
			Store (\TCRT, Local0)
			if (LGreater (Local0, 0)) {
				Return (Local0)
			}
			Return (127)
		}

		/* Get passive temperature in degree celsius */
		Method (GPSV, 0, NotSerialized) {
			Store (\TPSV, Local0)
			if (LGreater (Local0, 0)) {
				Return (Local0)
			}
			Return (95)
		}

		Method (_CRT, 0, NotSerialized) {
			Return (C2K (GCRT ()))
		}

		Method (_PSV, 0, NotSerialized) {
			Return (C2K (GPSV ()))
		}

		Method(_TMP) {
#if defined (EC_LENOVO_H8_ME_WORKAROUND)
			/* Avoid tripping alarm if ME isn't booted at all yet */
			If (LAnd (LNot (MEB1), LEqual (\_SB.PCI0.LPCB.EC.TMP0, 128))) {
				Return (C2K(40))
			}
			Store (1, MEB1)
#endif
			Return (C2K(\_SB.PCI0.LPCB.EC.TMP0))
		}

		Method (_AC0) {
			Store (GPSV (), Local0)

			/* Active fan 10 degree below passive threshold */
			Subtract (Local0, 10, Local0)

			If (\FLVL) {
				/* Turn of 5 degree below trip point */
				Subtract (Local0, 5, Local0)
			}

			Return (C2K (Local0))
		}

		Name (_AL0, Package () { FAN })

		PowerResource (FPwR, 0, 0)
		{
			/*
			 * WINDOWS BUG: Don't read from EmbeddedControl
			 * in PowerResources. Use system-memory instead!
			 */
			Method (_STA) {
				Return (\FLVL)
			}

			/*
			 * WINDOWS BUG: Don't write to FIELD elements located
			 * in another ACPI scope. Call a method that does it!
			 */
			Method (_ON) {
				\_SB.PCI0.LPCB.EC.FANE(One)
				Store (One, \FLVL)
				Notify (\_TZ.THM0, NOTIFY_TZ_TRIPPTCHG)
			}

			Method (_OFF) {
				\_SB.PCI0.LPCB.EC.FANE(Zero)
				Store (Zero, \FLVL)
				Notify (\_TZ.THM0, NOTIFY_TZ_TRIPPTCHG)
			}
		}

		Device (FAN)
		{
			Name (_HID, EISAID ("PNP0C0B"))
			Name (_PR0, Package () { FPwR })
		}
	}

	ThermalZone(THM1)
	{
		/* Thermal zone polling frequency: 10 seconds */
		Name (_TZP, 100)

		/* Thermal sampling period for passive cooling: 10 seconds */
		Name (_TSP, 100)

		/* Coefficients for passive cooling */
		Name (_TC1, 0x02)
		Name (_TC2, 0x05)

		/* Processors used for passive cooling */
		Method (_PSL, 0, Serialized)
		{
			Return (\PPKG ())
		}

		Method (_CRT, 0, NotSerialized) {
			Return (C2K (99))
		}

		Method (_PSV, 0, NotSerialized) {
			Return (C2K (94))
		}

		Method(_TMP) {
#if defined (EC_LENOVO_H8_ME_WORKAROUND)
			/* Avoid tripping alarm if ME isn't booted at all yet */
			If (LAnd (LNot (MEB2), LEqual (\_SB.PCI0.LPCB.EC.TMP1, 128))) {
				Return (C2K(40))
			}
			Store (1, MEB2)
#endif
			Return (C2K(\_SB.PCI0.LPCB.EC.TMP1))
		}
	}
}