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
11 typedef 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)
20 extern unsigned int of_irq_workarounds;
21 extern struct device_node *of_irq_dflt_pic;
22 extern 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)
of_irq_parse_oldworld(struct device_node * device,int index,struct of_phandle_args * out_irq)27 static 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
34 extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
35 extern int of_irq_parse_one(struct device_node *device, int index,
36 struct of_phandle_args *out_irq);
37 extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
38 extern int of_irq_to_resource(struct device_node *dev, int index,
39 struct resource *r);
40 extern int of_irq_to_resource_table(struct device_node *dev,
41 struct resource *res, int nr_irqs);
42
43 extern void of_irq_init(const struct of_device_id *matches);
44
45 #ifdef CONFIG_OF_IRQ
46 extern int of_irq_count(struct device_node *dev);
47 extern int of_irq_get(struct device_node *dev, int index);
48 extern int of_irq_get_byname(struct device_node *dev, const char *name);
49 #else
of_irq_count(struct device_node * dev)50 static inline int of_irq_count(struct device_node *dev)
51 {
52 return 0;
53 }
of_irq_get(struct device_node * dev,int index)54 static inline int of_irq_get(struct device_node *dev, int index)
55 {
56 return 0;
57 }
of_irq_get_byname(struct device_node * dev,const char * name)58 static inline int of_irq_get_byname(struct device_node *dev, const char *name)
59 {
60 return 0;
61 }
62 #endif
63
64 #if defined(CONFIG_OF)
65 /*
66 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
67 * implements it differently. However, the prototype is the same for all,
68 * so declare it here regardless of the CONFIG_OF_IRQ setting.
69 */
70 extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
71 extern struct device_node *of_irq_find_parent(struct device_node *child);
72
73 #else /* !CONFIG_OF */
irq_of_parse_and_map(struct device_node * dev,int index)74 static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
75 int index)
76 {
77 return 0;
78 }
79
of_irq_find_parent(struct device_node * child)80 static inline void *of_irq_find_parent(struct device_node *child)
81 {
82 return NULL;
83 }
84 #endif /* !CONFIG_OF */
85
86 #endif /* __OF_IRQ_H */
87