summaryrefslogblamecommitdiff
path: root/include/linux/of.h
blob: c65af7bd1e9c6369757dfaeeecf74feccea83f97 (plain) (tree) 
76c1ce7870fd ^


















1977f032722c ^

76c1ce7870fd ^

76c1ce7870fd ^




























aabc08dc662b ^




76c1ce7870fd ^








76c1ce7870fd ^




1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

19

20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48

49
50
51
52

53
54
55
56
57
58
59
60

61
62
63
64


















                                                                             
                         
 



























                                                                              



                                                                      







                                                                      



                                                   
#ifndef _LINUX_OF_H
#define _LINUX_OF_H
/*
 * Definitions for talking to the Open Firmware PROM on
 * Power Macintosh and other computers.
 *
 * Copyright (C) 1996-2005 Paul Mackerras.
 *
 * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
 * Updates for SPARC64 by David S. Miller
 * Derived from PowerPC and Sparc prom.h files by Stephen Rothwell, IBM Corp.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */
#include <linux/types.h>
#include <linux/bitops.h>

#include <asm/prom.h>

/* flag descriptions */
#define OF_DYNAMIC	1 /* node and properties were allocated via kmalloc */
#define OF_DETACHED	2 /* node has been detached from the device tree */

#define OF_BAD_ADDR	((u64)-1)

extern struct device_node *of_find_node_by_name(struct device_node *from,
	const char *name);
#define for_each_node_by_name(dn, name) \
	for (dn = of_find_node_by_name(NULL, name); dn; \
	     dn = of_find_node_by_name(dn, name))
extern struct device_node *of_find_node_by_type(struct device_node *from,
	const char *type);
#define for_each_node_by_type(dn, type) \
	for (dn = of_find_node_by_type(NULL, type); dn; \
	     dn = of_find_node_by_type(dn, type))
extern struct device_node *of_find_compatible_node(struct device_node *from,
	const char *type, const char *compat);
#define for_each_compatible_node(dn, type, compatible) \
	for (dn = of_find_compatible_node(NULL, type, compatible); dn; \
	     dn = of_find_compatible_node(dn, type, compatible))
extern struct device_node *of_find_node_by_path(const char *path);
extern struct device_node *of_find_node_by_phandle(phandle handle);
extern struct device_node *of_get_parent(const struct device_node *node);
extern struct device_node *of_get_next_child(const struct device_node *node,
					     struct device_node *prev);
#define for_each_child_of_node(parent, child) \
	for (child = of_get_next_child(parent, NULL); child != NULL; \
	     child = of_get_next_child(parent, child))

extern struct property *of_find_property(const struct device_node *np,
					 const char *name,
					 int *lenp);
extern int of_device_is_compatible(const struct device_node *device,
				   const char *);
extern const void *of_get_property(const struct device_node *node,
				const char *name,
				int *lenp);
extern int of_n_addr_cells(struct device_node *np);
extern int of_n_size_cells(struct device_node *np);

#endif /* _LINUX_OF_H */