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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc.
*
* 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 (GPIO)
{
// GPIO Controller
Method (_HID)
{
If (\ISWP ()) {
// WildcatPoint
Return ("INT3437")
}
// LynxPoint-LP
Return ("INT33C7")
}
Name (_UID, 1)
Name (RBUF, ResourceTemplate()
{
DWordIo (ResourceProducer,
MinFixed, // IsMinFixed
MaxFixed, // IsMaxFixed
PosDecode, // Decode
EntireRange, // ISARanges
0x00000000, // AddressGranularity
0x00000000, // AddressMinimum
0x00000000, // AddressMaximum
0x00000000, // AddressTranslation
0x00000000, // RangeLength
, // ResourceSourceIndex
, // ResourceSource
BAR0)
// Disabled due to IRQ storm: http://crosbug.com/p/29548
//Interrupt (ResourceConsumer,
// Level, ActiveHigh, Shared, , , ) {14}
})
Method (_CRS, 0, NotSerialized)
{
CreateDwordField (^RBUF, ^BAR0._MIN, BMIN)
CreateDwordField (^RBUF, ^BAR0._MAX, BMAX)
CreateDwordField (^RBUF, ^BAR0._LEN, BLEN)
Store (GPIO_BASE_SIZE, BLEN)
Store (GPIO_BASE_ADDRESS, BMIN)
Store (Subtract (Add (GPIO_BASE_ADDRESS,
GPIO_BASE_SIZE), 1), BMAX)
Return (RBUF)
}
Method (_STA, 0, NotSerialized)
{
Return (0xF)
}
// GWAK: Setup GPIO as ACPI GPE for Wake
// Arg0: GPIO Number
Method (GWAK, 1, Serialized)
{
// Local0 = GPIO Base Address
Store (And (GPBS, Not(0x1)), Local0)
// Local1 = BANK, Local2 = OFFSET
Divide (Arg0, 32, Local2, Local1)
//
// Set OWNER to ACPI
//
// Local3 = GPIOBASE + GPIO_OWN(BANK)
Store (Add (Local0, Multiply (Local1, 0x4)), Local3)
// GPIO_OWN(BANK)
OperationRegion (IOWN, SystemIO, Local3, 4)
Field (IOWN, AnyAcc, NoLock, Preserve) {
GOWN, 32,
}
// GPIO_OWN[GPIO] = 0 (ACPI)
Store (And (GOWN, Not (ShiftLeft (0x1, Local2))), GOWN)
//
// Set ROUTE to SCI
//
// Local3 = GPIOBASE + GPIO_ROUTE(BANK)
Store (Add (Add (Local0, 0x30), Multiply (Local1, 0x4)), Local3)
// GPIO_ROUTE(BANK)
OperationRegion (IROU, SystemIO, Local3, 4)
Field (IROU, AnyAcc, NoLock, Preserve) {
GROU, 32,
}
// GPIO_ROUTE[GPIO] = 0 (SCI)
Store (And (GROU, Not (ShiftLeft (0x1, Local2))), GROU)
//
// Set GPnCONFIG to GPIO|INPUT|INVERT
//
// Local3 = GPIOBASE + GPnCONFIG0(GPIO)
Store (Add (Add (Local0, 0x100), Multiply (Arg0, 0x8)), Local3)
// GPnCONFIG(GPIO)
OperationRegion (GPNC, SystemIO, Local3, 8)
Field (GPNC, AnyAcc, NoLock, Preserve) {
GMOD, 1, // MODE: 0=NATIVE 1=GPIO
, 1,
GIOS, 1, // IO_SEL: 0=OUTPUT 1=INPUT
GINV, 1, // INVERT: 0=NORMAL 1=INVERT
GLES, 1, // LxEB: 0=EDGE 1=LEVEL
, 24,
ILVL, 1, // INPUT: 0=LOW 1=HIGH
OLVL, 1, // OUTPUT: 0=LOW 1=HIGH
GPWP, 2, // PULLUP: 00=NONE 01=DOWN 10=UP 11=INVALID
ISEN, 1, // SENSE: 0=ENABLE 1=DISABLE
}
Store (0x1, GMOD) // GPIO
Store (0x1, GIOS) // INPUT
Store (0x1, GINV) // INVERT
}
}
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