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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc.
* Copyright (C) 2018 Intel Corporation.
*
* 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/gpio_defs.h>
#include <soc/irq.h>
#include <soc/pcr_ids.h>
#include <intelblocks/gpio.h>
#include "gpio_op.asl"
Device (GPIO)
{
Name (_HID, "INT34BB")
Name (_UID, 0)
Name (_DDN, "GPIO Controller")
Name (RBUF, ResourceTemplate()
{
Memory32Fixed (ReadWrite, 0, 0, COM0)
Memory32Fixed (ReadWrite, 0, 0, COM1)
Memory32Fixed (ReadWrite, 0, 0, COM4)
Interrupt (ResourceConsumer, Level, ActiveLow, Shared,,, GIRQ)
{ GPIO_IRQ14 }
})
/*
* GPIO communities 0, 1, and 4 are exported for the OS.
* This is based on the Linux kernel provided community map at
* drivers/pinctrl/intel/pinctrl-cannonlake.c:cnllp_communities[]
*/
Method (_CRS, 0, NotSerialized)
{
/* GPIO Community 0 */
CreateDWordField (^RBUF, ^COM0._BAS, BAS0)
CreateDWordField (^RBUF, ^COM0._LEN, LEN0)
Store (^^PCRB (PID_GPIOCOM0), BAS0)
Store (GPIO_BASE_SIZE, LEN0)
/* GPIO Community 1 */
CreateDWordField (^RBUF, ^COM1._BAS, BAS1)
CreateDWordField (^RBUF, ^COM1._LEN, LEN1)
Store (^^PCRB (PID_GPIOCOM1), BAS1)
Store (GPIO_BASE_SIZE, LEN1)
/* GPIO Community 4 */
CreateDWordField (^RBUF, ^COM4._BAS, BAS4)
CreateDWordField (^RBUF, ^COM4._LEN, LEN4)
Store (^^PCRB (PID_GPIOCOM4), BAS4)
Store (GPIO_BASE_SIZE, LEN4)
Return (RBUF)
}
Method (_STA, 0, NotSerialized)
{
Return (0xF)
}
}
/*
* Get GPIO DW0 Address
* Arg0 - GPIO Number
*/
Method (GADD, 1, NotSerialized)
{
/* GPIO Community 0 */
If (LAnd (LGreaterEqual (Arg0, GPP_A0), LLessEqual (Arg0, GPIO_RSVD_11)))
{
Store (PID_GPIOCOM0, Local0)
Subtract (Arg0, GPP_A0, Local1)
}
/* GPIO Community 1 */
If (LAnd (LGreaterEqual (Arg0, GPP_D0), LLessEqual (Arg0, vSD3_CD_B)))
{
Store (PID_GPIOCOM1, Local0)
Subtract (Arg0, GPP_D0, Local1)
}
/* GPIO Community 2 */
If (LAnd (LGreaterEqual (Arg0, GPD0), LLessEqual (Arg0, GPD11)))
{
Store (PID_GPIOCOM1, Local0)
Subtract (Arg0, GPD0, Local1)
}
/* GPIO Community 3 */
If (LAnd (LGreaterEqual (Arg0, HDA_BCLK), LLessEqual (Arg0, GPIO_RSVD_38)))
{
Store (PID_GPIOCOM1, Local0)
Subtract (Arg0, HDA_BCLK, Local1)
}
/* GPIO Community 04*/
If (LAnd (LGreaterEqual (Arg0, GPP_C0), LLessEqual (Arg0, GPIO_RSVD_27)))
{
Store (PID_GPIOCOM4, Local0)
Subtract (Arg0, GPP_C0, Local1)
}
Store (PCRB (Local0), Local2)
Add (Local2, PAD_CFG_BASE, Local2)
Return (Add (Local2, Multiply (Local1, 16)))
}
/*
* Return PCR Port ID of GPIO Communities
*
* Arg0: GPIO Community (0-4)
*/
Method (GPID, 1, Serialized)
{
Switch (ToInteger (Arg0))
{
Case (0) {
Store (PID_GPIOCOM0, Local0)
}
Case (1) {
Store (PID_GPIOCOM1, Local0)
}
Case (2) {
Store (PID_GPIOCOM2, Local0)
}
Case (3) {
Store (PID_GPIOCOM3, Local0)
}
Case (4) {
Store (PID_GPIOCOM4, Local0)
}
Default {
Return (0)
}
}
Return (Local0)
}
/*
* Configure GPIO Power Management bits
*
* Arg0: GPIO community (0-4)
* Arg1: PM bits in MISCCFG
*/
Method (CGPM, 2, Serialized)
{
Store (GPID (Arg0), Local0)
If (LNotEqual (Local0, 0)) {
/* Mask off current PM bits */
PCRA (Local0, GPIO_MISCCFG, Not (MISCCFG_ENABLE_GPIO_PM_CONFIG))
/* Mask in requested bits */
PCRO (Local0, GPIO_MISCCFG, And (Arg1, MISCCFG_ENABLE_GPIO_PM_CONFIG))
}
}
/* GPIO Power Management bits */
Name(GPMB, Package(TOTAL_GPIO_COMM) {0, 0, 0, 0, 0})
/*
* Save GPIO Power Management bits
*/
Method (SGPM, 0, Serialized)
{
For (Local0 = 0, Local0 < TOTAL_GPIO_COMM, Local0++)
{
Local1 = GPID (Local0)
GPMB[Local0] = PCRR (Local1, GPIO_MISCCFG)
}
}
/*
* Restore GPIO Power Management bits
*/
Method (RGPM, 0, Serialized)
{
For (Local0 = 0, Local0 < TOTAL_GPIO_COMM, Local0++)
{
CGPM (Local0, DerefOf(GPMB[Local0]))
}
}
/*
* Save current setting of GPIO Power Management bits and
* enable all Power Management bits for all communities
*/
Method (EGPM, 0, Serialized)
{
/* Save current setting and will restore it when resuming */
SGPM ()
/* Enable PM bits */
For (Local0 = 0, Local0 < TOTAL_GPIO_COMM, Local0++)
{
CGPM (Local0, MISCCFG_ENABLE_GPIO_PM_CONFIG)
}
}
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