Viewing file:  irqchip.h (2.65 KB) -rw-r--r--
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/*
* Copyright (C) 2012 Thomas Petazzoni
*
* Thomas Petazzoni <[email protected]>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef _LINUX_IRQCHIP_H
#define _LINUX_IRQCHIP_H
#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>
/* Undefined on purpose */
extern of_irq_init_cb_t typecheck_irq_init_cb;
#define typecheck_irq_init_cb(fn) \
(__typecheck(typecheck_irq_init_cb, &fn) ? fn : fn)
/*
* This macro must be used by the different irqchip drivers to declare
* the association between their DT compatible string and their
* initialization function.
*
* @name: name that must be unique across all IRQCHIP_DECLARE of the
* same file.
* @compat: compatible string of the irqchip driver
* @fn: initialization function
*/
#define IRQCHIP_DECLARE(name, compat, fn) \
OF_DECLARE_2(irqchip, name, compat, typecheck_irq_init_cb(fn))
extern int platform_irqchip_probe(struct platform_device *pdev);
#define IRQCHIP_PLATFORM_DRIVER_BEGIN(drv_name) \
static const struct of_device_id drv_name##_irqchip_match_table[] = {
#define IRQCHIP_MATCH(compat, fn) { .compatible = compat, \
.data = typecheck_irq_init_cb(fn), },
#define IRQCHIP_PLATFORM_DRIVER_END(drv_name, ...) \
{}, \
}; \
MODULE_DEVICE_TABLE(of, drv_name##_irqchip_match_table); \
static struct platform_driver drv_name##_driver = { \
.probe = IS_ENABLED(CONFIG_IRQCHIP) ? \
platform_irqchip_probe : NULL, \
.driver = { \
.name = #drv_name, \
.owner = THIS_MODULE, \
.of_match_table = drv_name##_irqchip_match_table, \
.suppress_bind_attrs = true, \
__VA_ARGS__ \
}, \
}; \
builtin_platform_driver(drv_name##_driver)
/*
* This macro must be used by the different irqchip drivers to declare
* the association between their version and their initialization function.
*
* @name: name that must be unique across all IRQCHIP_ACPI_DECLARE of the
* same file.
* @subtable: Subtable to be identified in MADT
* @validate: Function to be called on that subtable to check its validity.
* Can be NULL.
* @data: data to be checked by the validate function.
* @fn: initialization function
*/
#define IRQCHIP_ACPI_DECLARE(name, subtable, validate, data, fn) \
ACPI_DECLARE_SUBTABLE_PROBE_ENTRY(irqchip, name, \
ACPI_SIG_MADT, subtable, \
validate, data, fn)
#ifdef CONFIG_IRQCHIP
void irqchip_init(void);
#else
static inline void irqchip_init(void) {}
#endif
#endif
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