blob: d18b147d71c1194ce43691096f5d3bb2b3be8a3e [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2018 Advanced Micro Devices, 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.
*/
#include <soc/iomap.h>
/* Get pin control MMIO address */
Method (GPAD, 0x1)
{
/* Arg0 - GPIO pin number */
Return (Add(Multiply(Arg0, 4), GPIO_CONTROL_MMIO_BASE))
}
/* Read pin control dword */
Method (GPRD, 0x1, Serialized)
{
/* Arg0 - GPIO pin control MMIO address */
Store (Arg0, Local0)
OperationRegion (GPDW, SystemMemory, Local0, 4)
Field (GPDW, AnyAcc, NoLock, Preserve) {
TEMP, 32
}
Return (TEMP)
}
/* Write pin control dword */
Method (GPWR, 0x2, Serialized)
{
/* Arg0 - GPIO pin control MMIO address */
/* Arg1 - Value for control register */
Store (Arg0, Local0)
OperationRegion (GPDW, SystemMemory, Local0, 4)
Field (GPDW, AnyAcc, NoLock, Preserve) {
TEMP,32
}
Store (Arg1, TEMP)
}
Method (GPGB, 0x2)
{
/*
* Returns the desired byte
* Arg0 - GPIO pin control MMIO address
* Arg1 - Desired byte (0 through 3)
*/
Store (Multiply(Arg1, 8), Local2)
Return (And(ShiftRight(GPRD(Arg0), Local2), 0x000000FF))
}
Method (GPSB, 0x3)
{
/*
* Reads dword, replace byte, write back dword
* Arg0 - GPIO pin control MMIO address
* Arg1 - Desired byte (0 through 3)
* Arg2 - Value
*/
Store (Multiply(Arg1, 8), Local2)
And(ShiftRight(GPRD(Arg0), Local2), 0xFFFFFF00, Local3)
ShiftLeft (Or(And(Arg2, 0x000000FF),Local3), Local2, Local4)
GPWR (Arg0, Local4)
}
/* Read pin control byte 0 */
Method (GPR0, 0x1)
{
/* Arg0 - GPIO pin control MMIO address */
Return (GPGB(Arg0, 0))
}
/* Read pin control byte 1 */
Method (GPR1, 0x1)
{
/* Arg0 - GPIO pin control MMIO address */
Return (GPGB(Arg0, 1))
}
/* Read pin control byte 2 */
Method (GPR2, 0x1)
{
/* Arg0 - GPIO pin control MMIO address */
Return (GPGB(Arg0, 2))
}
/* Read pin control byte 3 */
Method (GPR3, 0x1)
{
Return (GPGB(Arg0, 3))
}
/* Write pin control byte 0 */
Method (GPW0, 0x2)
{
/* Arg0 - GPIO pin control MMIO address */
/* Arg1 - Value for control register */
GPSB (Arg0, 0, Arg1)
}
/* Write pin control byte 1 */
Method (GPW1, 0x2)
{
/* Arg0 - GPIO pin control MMIO address */
/* Arg1 - Value for control register */
GPSB (Arg0, 1, Arg1)
}
/* Write pin control byte 2 */
Method (GPW2, 0x2)
{
/* Arg0 - GPIO pin control MMIO address */
/* Arg1 - Value for control register */
GPSB (Arg0, 2, Arg1)
}
/* Write pin control byte 3 */
Method (GPW3, 0x2)
{
/* Arg0 - GPIO pin control MMIO address */
/* Arg1 - Value for control register */
GPSB (Arg0, 3, Arg1)
}