src/soc/intel/cannonlake/acpi/gpio.asl

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2014 Google Inc.
 * Copyright (C) 2015 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>


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, COM2)
		Memory32Fixed (ReadWrite, 0, 0, COM3)
		Memory32Fixed (ReadWrite, 0, 0, COM4)
		Interrupt (ResourceConsumer, Level, ActiveLow, Shared,,, GIRQ)
			{ GPIO_IRQ14 }
	})

	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 2 */
		CreateDWordField (^RBUF, ^COM2._BAS, BAS2)
		CreateDWordField (^RBUF, ^COM2._LEN, LEN2)
		Store (^^PCRB (PID_GPIOCOM2), BAS2)
		Store (GPIO_BASE_SIZE, LEN2)

		/* GPIO Community 3 */
		CreateDWordField (^RBUF, ^COM3._BAS, BAS3)
		CreateDWordField (^RBUF, ^COM3._LEN, LEN3)
		Store (^^PCRB (PID_GPIOCOM3), BAS3)
		Store (GPIO_BASE_SIZE, LEN3)


		/* 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, GPIO_RSVD_52)))
	{
		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_78)))
	{
		Store (PID_GPIOCOM1, Local0)
		Subtract (Arg0, HDA_BCLK, Local1)
	}
	/* GPIO Community 04*/
	If (LAnd (LGreaterEqual (Arg0, GPP_C0), LLessEqual (Arg0, GPIO_RSVD_67)))
	{
		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)))
}

/*
 * Get GPIO Value
 * Arg0 - GPIO Number
 */
Method (GRXS, 1, Serialized)
{
	OperationRegion (PREG, SystemMemory, GADD (Arg0), 4)
	Field (PREG, AnyAcc, NoLock, Preserve)
	{
		VAL0, 32
	}
	And (GPIORXSTATE_MASK, ShiftRight (VAL0, GPIORXSTATE_SHIFT), Local0)

	Return (Local0)
}