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 */ |
21 | extern 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 | |
39 | extern int platform_irqchip_probe(struct platform_device *pdev); |
40 | |
41 | #define IRQCHIP_PLATFORM_DRIVER_BEGIN(drv_name) \ |
42 | static 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 | |
48 | #define IRQCHIP_PLATFORM_DRIVER_END(drv_name, ...) \ |
49 | {}, \ |
50 | }; \ |
51 | MODULE_DEVICE_TABLE(of, drv_name##_irqchip_match_table); \ |
52 | static struct platform_driver drv_name##_driver = { \ |
53 | .probe = IS_ENABLED(CONFIG_IRQCHIP) ? \ |
54 | platform_irqchip_probe : NULL, \ |
55 | .driver = { \ |
56 | .name = #drv_name, \ |
57 | .owner = THIS_MODULE, \ |
58 | .of_match_table = drv_name##_irqchip_match_table, \ |
59 | .suppress_bind_attrs = true, \ |
60 | __VA_ARGS__ \ |
61 | }, \ |
62 | }; \ |
63 | builtin_platform_driver(drv_name##_driver) |
64 | |
65 | /* |
66 | * This macro must be used by the different irqchip drivers to declare |
67 | * the association between their version and their initialization function. |
68 | * |
69 | * @name: name that must be unique across all IRQCHIP_ACPI_DECLARE of the |
70 | * same file. |
71 | * @subtable: Subtable to be identified in MADT |
72 | * @validate: Function to be called on that subtable to check its validity. |
73 | * Can be NULL. |
74 | * @data: data to be checked by the validate function. |
75 | * @fn: initialization function |
76 | */ |
77 | #define IRQCHIP_ACPI_DECLARE(name, subtable, validate, data, fn) \ |
78 | ACPI_DECLARE_SUBTABLE_PROBE_ENTRY(irqchip, name, \ |
79 | ACPI_SIG_MADT, subtable, \ |
80 | validate, data, fn) |
81 | |
82 | #ifdef CONFIG_IRQCHIP |
83 | void irqchip_init(void); |
84 | #else |
85 | static inline void irqchip_init(void) {} |
86 | #endif |
87 | |
88 | #endif |
89 | |