Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef __OF_IRQ_H
2#define __OF_IRQ_H
3
4#include <linux/types.h>
5#include <linux/errno.h>
6#include <linux/irq.h>
7#include <linux/irqdomain.h>
8#include <linux/ioport.h>
9#include <linux/of.h>
10
11typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
12
13/*
14 * Workarounds only applied to 32bit powermac machines
15 */
16#define OF_IMAP_OLDWORLD_MAC 0x00000001
17#define OF_IMAP_NO_PHANDLE 0x00000002
18
19#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
20extern unsigned int of_irq_workarounds;
21extern struct device_node *of_irq_dflt_pic;
22extern int of_irq_parse_oldworld(struct device_node *device, int index,
23 struct of_phandle_args *out_irq);
24#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
25#define of_irq_workarounds (0)
26#define of_irq_dflt_pic (NULL)
27static inline int of_irq_parse_oldworld(struct device_node *device, int index,
28 struct of_phandle_args *out_irq)
29{
30 return -EINVAL;
31}
32#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
33
34extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
35extern int of_irq_parse_one(struct device_node *device, int index,
36 struct of_phandle_args *out_irq);
37extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
38extern int of_irq_to_resource(struct device_node *dev, int index,
39 struct resource *r);
40extern int of_irq_to_resource_table(struct device_node *dev,
41 struct resource *res, int nr_irqs);
42
43extern void of_irq_init(const struct of_device_id *matches);
44
45#ifdef CONFIG_OF_IRQ
46extern int of_irq_count(struct device_node *dev);
47#else
48static inline int of_irq_count(struct device_node *dev)
49{
50 return 0;
51}
52#endif
53
54#if defined(CONFIG_OF)
55/*
56 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
57 * implements it differently. However, the prototype is the same for all,
58 * so declare it here regardless of the CONFIG_OF_IRQ setting.
59 */
60extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
61extern struct device_node *of_irq_find_parent(struct device_node *child);
62
63#else /* !CONFIG_OF */
64static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
65 int index)
66{
67 return 0;
68}
69
70static inline void *of_irq_find_parent(struct device_node *child)
71{
72 return NULL;
73}
74#endif /* !CONFIG_OF */
75
76#endif /* __OF_IRQ_H */