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/platform_device.h>
18
19 /*
20 * This macro must be used by the different irqchip drivers to declare
21 * the association between their DT compatible string and their
22 * initialization function.
23 *
24 * @name: name that must be unique across all IRQCHIP_DECLARE of the
25 * same file.
26 * @compstr: compatible string of the irqchip driver
27 * @fn: initialization function
28 */
29 #define IRQCHIP_DECLARE(name, compat, fn) OF_DECLARE_2(irqchip, name, compat, fn)
30
31 extern int platform_irqchip_probe(struct platform_device *pdev);
32
33 #define IRQCHIP_PLATFORM_DRIVER_BEGIN(drv_name) \
34 static const struct of_device_id drv_name##_irqchip_match_table[] = {
35
36 #define IRQCHIP_MATCH(compat, fn) { .compatible = compat, .data = fn },
37
38 #define IRQCHIP_PLATFORM_DRIVER_END(drv_name) \
39 {}, \
40 }; \
41 MODULE_DEVICE_TABLE(of, drv_name##_irqchip_match_table); \
42 static struct platform_driver drv_name##_driver = { \
43 .probe = platform_irqchip_probe, \
44 .driver = { \
45 .name = #drv_name, \
46 .owner = THIS_MODULE, \
47 .of_match_table = drv_name##_irqchip_match_table, \
48 .suppress_bind_attrs = true, \
49 }, \
50 }; \
51 builtin_platform_driver(drv_name##_driver)
52
53 /*
54 * This macro must be used by the different irqchip drivers to declare
55 * the association between their version and their initialization function.
56 *
57 * @name: name that must be unique across all IRQCHIP_ACPI_DECLARE of the
58 * same file.
59 * @subtable: Subtable to be identified in MADT
60 * @validate: Function to be called on that subtable to check its validity.
61 * Can be NULL.
62 * @data: data to be checked by the validate function.
63 * @fn: initialization function
64 */
65 #define IRQCHIP_ACPI_DECLARE(name, subtable, validate, data, fn) \
66 ACPI_DECLARE_SUBTABLE_PROBE_ENTRY(irqchip, name, \
67 ACPI_SIG_MADT, subtable, \
68 validate, data, fn)
69
70 #ifdef CONFIG_IRQCHIP
71 void irqchip_init(void);
72 #else
irqchip_init(void)73 static inline void irqchip_init(void) {}
74 #endif
75
76 #endif
77