src/mainboard/apple/macbook21/acpi/ec.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.
 */

Device(EC)
{
	Name(_HID, EISAID("PNP0C09"))
	Name(_UID, 0)

	Name(_GPE, 0x17)
	Mutex(ECLK, 0)

	OperationRegion(ERAM, EmbeddedControl, 0x00, 0x100)
	Field(ERAM, ByteAcc, NoLock, Preserve)
	{
		Offset(0x01),
				LIDS, 1,        /* Lid status */
				HPAC, 1,
		Offset(0x02),
				WKLD, 1,        /* Lid wake */

		Offset(0x20),
				SPTR,   8,
				SSTS,   8,
				SADR,   8,
				SCMD,   8,
				SBFR,   256,
	}
        Field(ERAM, ByteAcc, Lock, Preserve)
        {
		Offset(0x24),
				SBDW,   16,
	}

	Method(SBPC, 0, NotSerialized)
	{
		Store(1000, Local0)
		While(Local0)
		{
			If(LEqual(SPTR, 0x00))
			{
				Return()
			}

			Sleep(1)
			Decrement(Local0)
		}
	}

	Method(SBRW, 2, NotSerialized)
	{
		Acquire(ECLK, 0xFFFF)
		Store(ShiftLeft(Arg0, 0x01), SADR)
		Store(Arg1, SCMD)
		Store(0x09, SPTR)
		SBPC()
		Store(SBDW, Local0)
		Release(ECLK)
		Return(Local0)
	}

	Method(SBRB, 2, NotSerialized)
	{
		Acquire(ECLK, 0xFFFF)
		Store(ShiftLeft(Arg0, 0x01), SADR)
		Store(Arg1, SCMD)
		Store(0x0B, SPTR)
		SBPC()
		Store(SBFR, Local0)
		Release(ECLK)
		Return(Local0)
	}

	/* LID status change. */
	Method(_Q20, 0, NotSerialized)
	{
		Notify(LID, 0x80)
	}

	/* AC status change. */
	Method(_Q21, 0, NotSerialized)
	{
		Notify(AC, 0x80)
	}

	Method(_CRS, 0)
	{
		Name(ECMD, ResourceTemplate()
		{
			IO(Decode16, 0x62, 0x62, 1, 1)
			IO(Decode16, 0x66, 0x66, 1, 1)
		})
		Return(ECMD)
	}

	Method(_INI, 0, NotSerialized)
	{
	}

	Device(LID)
	{
		Name(_HID, "PNP0C0D")

		Method(_LID, 0, NotSerialized)
		{
			return(LIDS)
		}

		Method(_PRW, 0, NotSerialized)
		{
			Return (Package() { 0x1d, 0x03 })
		}

		Method(_PSW, 1, NotSerialized)
		{
			if (Arg0) {
				Store(1, WKLD)
			} else {
				Store(0, WKLD)
			}
		}
	}

	Device(AC)
	{
		Name(_HID, "ACPI0003")
		Name(_UID, 0x00)
		Name(_PCL, Package() { \_SB } )

		Method(_PSR, 0, NotSerialized)
		{
			return(HPAC)
		}

		Method(_STA, 0, NotSerialized)
		{
			Return(0x0f)
		}
	}

	Device(BAT0)
	{
		Name(_HID, EisaId("PNP0C0A"))
		Name(_UID, 0x00)
		Name(_PCL, Package() { \_SB })

		Name(BATS, Package()
		{
			0x00,			// 0: PowerUnit: Report in mWh
			0xFFFFFFFF,		// 1: Design cap
			0xFFFFFFFF,		// 2: Last full charge cap
			0x01,			// 3: Battery Technology
			10800,			// 4: Design Voltage(mV)
			0x00,			// 5: Warning design capacity
			200,			// 6: Low design capacity
			10,			// 7: granularity1
			10,			// 8: granularity2
			"",			// 9: Model number
			"",			// A: Serial number
			"",			// B: Battery Type
			""			// C: OEM information
		})

		Name(BATI, Package()
		{
			0,			// Battery State
						// Bit 0 - discharge
						// Bit 1 - charge
						// Bit 2 - critical state
			0,			// Battery present Rate
			0,			// Battery remaining capacity
			0			// Battery present voltage
		})

		Method(_BIF, 0, NotSerialized)
		{
			Multiply(^^SBRW(0x0B, 0x18), 10, Index(BATS, 0x01))
			Multiply(^^SBRW(0x0B, 0x10), 10, Index(BATS, 0x02))
			Store(^^SBRW(0x0B, 0x19), Index(BATS, 0x04))
			Store(^^SBRB(0x0B, 0x21), Index(BATS, 0x09))
			Store(^^SBRB(0x0B, 0x22), Index(BATS, 0x0B))
			Store(^^SBRB(0x0B, 0x20), Index(BATS, 0x0C))

			Return(BATS)
		}

		Method(_STA, 0, NotSerialized)
		{
			If(And(^^SBRW(0x0A, 0x01), 0x01)) {
				Return(0x1f)
			} else {
				Return(0x0f)
			}
		}

		Method(_BST, 0, NotSerialized)
		{
			/* Check for battery presence.  */
			If(LNot(And(^^SBRW(0x0A, 0x01), 0x01))) {
				Return(Package(4) {
				       0,
				       0xFFFFFFFF,
				       0xFFFFFFFF,
				       0xFFFFFFFF
				})
			}
			Store(^^SBRW(0x0B, 0x09), Local1)
			Store(Local1, Index(BATI, 0x03))
			Store(^^SBRW(0x0B, 0x0A), Local0)
			/* Sign-extend Local0.  */
			If(And(Local0, 0x8000))
			{
				Not(Local0, Local0)
				And(Increment(Local0), 0xFFFF, Local0)
			}

			Multiply(Local0, Local1, Local0)
			Divide(Local0, 1000, , Index(BATI, 1))
			Multiply(^^SBRW(0x0B, 0x0F), 10, Index(BATI, 2))
			If(HPAC)
			{
				If(LNot(And(^^SBRW(0x0B, 0x16), 0x40))) {
					Store(2, Index(BATI, 0))
				} Else {
					Store(0, Index(BATI, 0))
				}
			}
			Else
			{
				Store(0x01, Index(BATI, 0))
			}

			Return(BATI)
		}
	}
}