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/* SPDX-License-Identifier: GPL-2.0-only */
#include <soc/iomap.h>
#define GPIO_INPUT_SHIFT 16
#define GPIO_INPUT_VALUE (1 << GPIO_INPUT_SHIFT)
#define GPIO_OUTPUT_SHIFT 22
#define GPIO_OUTPUT_VALUE (1 << GPIO_OUTPUT_SHIFT)
/* Get pin control MMIO address */
Method (GPAD, 0x1)
{
/* Arg0 - GPIO pin number */
Return ((Arg0 * 4) + ACPIMMIO_GPIO0_BASE)
}
/* Read pin control dword */
Method (GPRD, 0x1, Serialized)
{
/* Arg0 - GPIO pin control MMIO address */
Local0 = Arg0
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 */
Local0 = Arg0
OperationRegion (GPDW, SystemMemory, Local0, 4)
Field (GPDW, AnyAcc, NoLock, Preserve) {
TEMP,32
}
TEMP = Arg1
}
Method (GPGB, 0x2)
{
/*
* Returns the desired byte
* Arg0 - GPIO pin control MMIO address
* Arg1 - Desired byte (0 through 3)
*/
Local2 = Arg1 * 8
Return ((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
*/
Local2 = Arg1 * 8
Local3 = (GPRD(Arg0) >> Local2) & 0xFFFFFF00
Local4 = ((Arg2 & 0x000000FF) | Local3) << Local2
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)
}
/*
* Set GPIO Output Value
* Arg0 - GPIO Number
*/
Method (STXS, 1, Serialized)
{
OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4)
Field (GPDW, AnyAcc, NoLock, Preserve)
{
VAL0, 32
}
VAL0 |= GPIO_OUTPUT_VALUE
}
/*
* Clear GPIO Output Value
* Arg0 - GPIO Number
*/
Method (CTXS, 1, Serialized)
{
OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4)
Field (GPDW, AnyAcc, NoLock, Preserve)
{
VAL0, 32
}
VAL0 &= ~GPIO_OUTPUT_VALUE
}
/*
* Get GPIO Input Value
* Arg0 - GPIO Number
*/
Method (GRXS, 1, Serialized)
{
OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4)
Field (GPDW, AnyAcc, NoLock, Preserve)
{
VAL0, 32
}
Local0 = (GPIO_INPUT_VALUE & VAL0) >> GPIO_INPUT_SHIFT
Return (Local0)
}
/*
* Get GPIO Output Value
* Arg0 - GPIO Number
*/
Method (GTXS, 1, Serialized)
{
OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4)
Field (GPDW, AnyAcc, NoLock, Preserve)
{
VAL0, 32
}
Local0 = (GPIO_OUTPUT_VALUE & VAL0) >> GPIO_OUTPUT_SHIFT
Return (Local0)
}
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