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);
40
41extern void of_irq_init(const struct of_device_id *matches);
42
43#ifdef CONFIG_OF_IRQ
44extern int of_irq_count(struct device_node *dev);
45extern int of_irq_get(struct device_node *dev, int index);
46extern int of_irq_get_byname(struct device_node *dev, const char *name);
47extern int of_irq_to_resource_table(struct device_node *dev,
48		struct resource *res, int nr_irqs);
49#else
50static inline int of_irq_count(struct device_node *dev)
51{
52	return 0;
53}
54static inline int of_irq_get(struct device_node *dev, int index)
55{
56	return 0;
57}
58static inline int of_irq_get_byname(struct device_node *dev, const char *name)
59{
60	return 0;
61}
62static inline int of_irq_to_resource_table(struct device_node *dev,
63					   struct resource *res, int nr_irqs)
64{
65	return 0;
66}
67#endif
68
69#if defined(CONFIG_OF)
70/*
71 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
72 * implements it differently.  However, the prototype is the same for all,
73 * so declare it here regardless of the CONFIG_OF_IRQ setting.
74 */
75extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
76extern struct device_node *of_irq_find_parent(struct device_node *child);
77
78#else /* !CONFIG_OF */
79static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
80						int index)
81{
82	return 0;
83}
84
85static inline void *of_irq_find_parent(struct device_node *child)
86{
87	return NULL;
88}
89#endif /* !CONFIG_OF */
90
91#endif /* __OF_IRQ_H */
92