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/*
* This file is part of the coreboot project.
*
* Copyright 2016 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.
*/
#ifndef __ACPI_DEVICE_H
#define __ACPI_DEVICE_H
#define ACPI_DESCRIPTOR_LARGE (1 << 7)
#define ACPI_DESCRIPTOR_INTERRUPT (ACPI_DESCRIPTOR_LARGE | 9)
struct device;
const char *acpi_device_name(struct device *dev);
const char *acpi_device_path(struct device *dev);
const char *acpi_device_scope(struct device *dev);
const char *acpi_device_path_join(struct device *dev, const char *name);
/*
* ACPI Descriptor for extended Interrupt()
*/
enum irq_mode {
IRQ_EDGE_TRIGGERED,
IRQ_LEVEL_TRIGGERED
};
enum irq_polarity {
IRQ_ACTIVE_LOW,
IRQ_ACTIVE_HIGH,
IRQ_ACTIVE_BOTH
};
enum irq_shared {
IRQ_EXCLUSIVE,
IRQ_SHARED
};
enum irq_wake {
IRQ_NO_WAKE,
IRQ_WAKE
};
struct acpi_irq {
unsigned int pin;
enum irq_mode mode;
enum irq_polarity polarity;
enum irq_shared shared;
enum irq_wake wake;
};
#define IRQ_EDGE_LOW(x) { \
.pin = (x), \
.mode = IRQ_EDGE_TRIGGERED, \
.polarity = IRQ_ACTIVE_LOW, \
.shared = IRQ_EXCLUSIVE, \
.wake = IRQ_NO_WAKE }
#define IRQ_EDGE_HIGH(x) { \
.pin = (x), \
.mode = IRQ_EDGE_TRIGGERED, \
.polarity = IRQ_ACTIVE_HIGH, \
.shared = IRQ_EXCLUSIVE, \
.wake = IRQ_NO_WAKE }
#define IRQ_LEVEL_LOW(x) { \
.pin = (x), \
.mode = IRQ_LEVEL_TRIGGERED, \
.polarity = IRQ_ACTIVE_LOW, \
.shared = IRQ_SHARED, \
.wake = IRQ_NO_WAKE }
/* Write extended Interrupt() descriptor to SSDT AML output */
void acpi_device_write_interrupt(const struct acpi_irq *irq);
#endif
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