Linux kernel mirror (for testing)
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1/*
2 * Copyright (C) 2012 Thomas Petazzoni
3 *
4 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
5 *
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
9 */
10
11#ifndef _LINUX_IRQCHIP_H
12#define _LINUX_IRQCHIP_H
13
14#include <linux/acpi.h>
15#include <linux/module.h>
16#include <linux/of.h>
17#include <linux/of_irq.h>
18#include <linux/platform_device.h>
19
20/* Undefined on purpose */
21extern of_irq_init_cb_t typecheck_irq_init_cb;
22
23#define typecheck_irq_init_cb(fn) \
24 (__typecheck(typecheck_irq_init_cb, &fn) ? fn : fn)
25
26/*
27 * This macro must be used by the different irqchip drivers to declare
28 * the association between their DT compatible string and their
29 * initialization function.
30 *
31 * @name: name that must be unique across all IRQCHIP_DECLARE of the
32 * same file.
33 * @compat: compatible string of the irqchip driver
34 * @fn: initialization function
35 */
36#define IRQCHIP_DECLARE(name, compat, fn) \
37 OF_DECLARE_2(irqchip, name, compat, typecheck_irq_init_cb(fn))
38
39extern int platform_irqchip_probe(struct platform_device *pdev);
40
41#define IRQCHIP_PLATFORM_DRIVER_BEGIN(drv_name) \
42static const struct of_device_id drv_name##_irqchip_match_table[] = {
43
44#define IRQCHIP_MATCH(compat, fn) { .compatible = compat, \
45 .data = typecheck_irq_init_cb(fn), },
46
47#define IRQCHIP_PLATFORM_DRIVER_END(drv_name) \
48 {}, \
49}; \
50MODULE_DEVICE_TABLE(of, drv_name##_irqchip_match_table); \
51static struct platform_driver drv_name##_driver = { \
52 .probe = IS_ENABLED(CONFIG_IRQCHIP) ? \
53 platform_irqchip_probe : NULL, \
54 .driver = { \
55 .name = #drv_name, \
56 .owner = THIS_MODULE, \
57 .of_match_table = drv_name##_irqchip_match_table, \
58 .suppress_bind_attrs = true, \
59 }, \
60}; \
61builtin_platform_driver(drv_name##_driver)
62
63/*
64 * This macro must be used by the different irqchip drivers to declare
65 * the association between their version and their initialization function.
66 *
67 * @name: name that must be unique across all IRQCHIP_ACPI_DECLARE of the
68 * same file.
69 * @subtable: Subtable to be identified in MADT
70 * @validate: Function to be called on that subtable to check its validity.
71 * Can be NULL.
72 * @data: data to be checked by the validate function.
73 * @fn: initialization function
74 */
75#define IRQCHIP_ACPI_DECLARE(name, subtable, validate, data, fn) \
76 ACPI_DECLARE_SUBTABLE_PROBE_ENTRY(irqchip, name, \
77 ACPI_SIG_MADT, subtable, \
78 validate, data, fn)
79
80#ifdef CONFIG_IRQCHIP
81void irqchip_init(void);
82#else
83static inline void irqchip_init(void) {}
84#endif
85
86#endif