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gerrit.openfyde.cn / github.com / raspberrypi / raspberrypi-kernel / 82b9b4243c6d99d9e38087fa89183aa7479185e9 / . / include / linux / of_irq.h
blob: 65d969246a4d02e1ee8854451c923d5003941d31 [file] [log] [blame]
Grant Likelye3873442010-06-18 11:09:59 -0600[diff] [blame]1#ifndef __OF_IRQ_H
2#define __OF_IRQ_H
3
Grant Likelye3873442010-06-18 11:09:59 -0600[diff] [blame]4#include <linux/types.h>
Grant Likely7dc2e112010-06-08 07:48:06 -0600[diff] [blame]5#include <linux/errno.h>
Grant Likely530719b2010-10-21 11:34:55 -0600[diff] [blame]6#include <linux/irq.h>
Grant Likelyd593f252012-02-24 08:24:17 -0700[diff] [blame]7#include <linux/irqdomain.h>
Grant Likely7dc2e112010-06-08 07:48:06 -0600[diff] [blame]8#include <linux/ioport.h>
Grant Likelye3873442010-06-18 11:09:59 -0600[diff] [blame]9#include <linux/of.h>
10
Rob Herringc71a54b2011-09-20 15:13:50 -0500[diff] [blame]11typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
12
Grant Likely7dc2e112010-06-08 07:48:06 -0600[diff] [blame]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;
Grant Likely0c02c802013-09-19 11:22:36 -0500[diff] [blame]22extern int of_irq_parse_oldworld(struct device_node *device, int index,
Grant Likely530210c2013-09-15 16:39:11 +0100[diff] [blame]23 struct of_phandle_args *out_irq);
Grant Likely7dc2e112010-06-08 07:48:06 -0600[diff] [blame]24#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
25#define of_irq_workarounds (0)
26#define of_irq_dflt_pic (NULL)
Grant Likely0c02c802013-09-19 11:22:36 -0500[diff] [blame]27static inline int of_irq_parse_oldworld(struct device_node *device, int index,
Grant Likely530210c2013-09-15 16:39:11 +0100[diff] [blame]28 struct of_phandle_args *out_irq)
Grant Likely7dc2e112010-06-08 07:48:06 -0600[diff] [blame]29{
30 return -EINVAL;
31}
32#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
33
Grant Likely23616132013-09-15 22:32:39 +0100[diff] [blame]34extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
Grant Likely0c02c802013-09-19 11:22:36 -0500[diff] [blame]35extern int of_irq_parse_one(struct device_node *device, int index,
Grant Likely530210c2013-09-15 16:39:11 +0100[diff] [blame]36 struct of_phandle_args *out_irq);
Grant Likelye6d30ab2013-09-15 16:55:53 +0100[diff] [blame]37extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
Grant Likely7dc2e112010-06-08 07:48:06 -0600[diff] [blame]38extern int of_irq_to_resource(struct device_node *dev, int index,
39 struct resource *r);
Grant Likelye3873442010-06-18 11:09:59 -0600[diff] [blame]40
Rob Herringc71a54b2011-09-20 15:13:50 -0500[diff] [blame]41extern void of_irq_init(const struct of_device_id *matches);
Grant Likely08a543a2011-07-26 03:19:06 -0600[diff] [blame]42
Rob Herringa8d3f362013-11-07 12:13:27 -0600[diff] [blame]43#ifdef CONFIG_OF_IRQ
44extern int of_irq_count(struct device_node *dev);
Rob Herring9ec36ca2014-04-23 17:57:41 -0500[diff] [blame]45extern int of_irq_get(struct device_node *dev, int index);
Grygorii Strashkoad696742014-05-20 13:42:02 +0300[diff] [blame]46extern int of_irq_get_byname(struct device_node *dev, const char *name);
Geert Uytterhoevend616a702015-04-05 16:59:25 +0200[diff] [blame]47extern int of_irq_to_resource_table(struct device_node *dev,
48 struct resource *res, int nr_irqs);
Marc Zyngier48ae34f2015-09-18 14:07:40 +0100[diff] [blame]49extern struct irq_domain *of_msi_get_domain(struct device *dev,
50 struct device_node *np,
51 enum irq_domain_bus_token token);
Marc Zyngier82b9b422015-10-02 14:38:55 +0100[diff] [blame^]52extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
53 u32 rid);
Rob Herringa8d3f362013-11-07 12:13:27 -0600[diff] [blame]54#else
55static inline int of_irq_count(struct device_node *dev)
56{
57 return 0;
58}
Rob Herring9ec36ca2014-04-23 17:57:41 -0500[diff] [blame]59static inline int of_irq_get(struct device_node *dev, int index)
60{
61 return 0;
62}
Grygorii Strashkoad696742014-05-20 13:42:02 +0300[diff] [blame]63static inline int of_irq_get_byname(struct device_node *dev, const char *name)
64{
65 return 0;
66}
Geert Uytterhoevend616a702015-04-05 16:59:25 +0200[diff] [blame]67static inline int of_irq_to_resource_table(struct device_node *dev,
68 struct resource *res, int nr_irqs)
69{
70 return 0;
71}
Marc Zyngier48ae34f2015-09-18 14:07:40 +0100[diff] [blame]72static inline struct irq_domain *of_msi_get_domain(struct device *dev,
73 struct device_node *np,
74 enum irq_domain_bus_token token)
75{
76 return NULL;
77}
Marc Zyngier82b9b422015-10-02 14:38:55 +0100[diff] [blame^]78static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
79 u32 rid)
80{
81 return NULL;
82}
Rob Herringa8d3f362013-11-07 12:13:27 -0600[diff] [blame]83#endif
84
Rob Herringb0b8c962013-09-04 10:52:57 -0500[diff] [blame]85#if defined(CONFIG_OF)
86/*
87 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
88 * implements it differently. However, the prototype is the same for all,
89 * so declare it here regardless of the CONFIG_OF_IRQ setting.
90 */
91extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
92extern struct device_node *of_irq_find_parent(struct device_node *child);
Marc Zyngierc706c232015-07-28 14:46:15 +0100[diff] [blame]93extern void of_msi_configure(struct device *dev, struct device_node *np);
David Daney8db02d82015-10-08 15:10:48 -0700[diff] [blame]94u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in);
Thomas Abraham766644d2012-03-25 20:32:49 +0530[diff] [blame]95
96#else /* !CONFIG_OF */
97static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
98 int index)
99{
100 return 0;
101}
Lee Jones62861092012-08-08 13:44:59 +0100[diff] [blame]102
103static inline void *of_irq_find_parent(struct device_node *child)
104{
105 return NULL;
106}
David Daney8db02d82015-10-08 15:10:48 -0700[diff] [blame]107
108static inline u32 of_msi_map_rid(struct device *dev,
109 struct device_node *msi_np, u32 rid_in)
110{
111 return rid_in;
112}
Thomas Abraham766644d2012-03-25 20:32:49 +0530[diff] [blame]113#endif /* !CONFIG_OF */
114
Grant Likelye3873442010-06-18 11:09:59 -0600[diff] [blame]115#endif /* __OF_IRQ_H */