OF: Utility helper functions for dynamic nodes
[deliverable/linux.git] / drivers / of / of_private.h
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ced4eec9
SM
1#ifndef _LINUX_OF_PRIVATE_H
2#define _LINUX_OF_PRIVATE_H
3/*
4 * Private symbols used by OF support code
5 *
6 * Paul Mackerras August 1996.
7 * Copyright (C) 1996-2005 Paul Mackerras.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 */
14
15/**
16 * struct alias_prop - Alias property in 'aliases' node
17 * @link: List node to link the structure in aliases_lookup list
18 * @alias: Alias property name
19 * @np: Pointer to device_node that the alias stands for
20 * @id: Index value from end of alias name
21 * @stem: Alias string without the index
22 *
23 * The structure represents one alias property of 'aliases' node as
24 * an entry in aliases_lookup list.
25 */
26struct alias_prop {
27 struct list_head link;
28 const char *alias;
29 struct device_node *np;
30 int id;
31 char stem[0];
32};
33
c05aba2b 34extern struct mutex of_mutex;
ced4eec9 35extern struct list_head aliases_lookup;
6afc0dc3
GL
36
37static inline struct device_node *kobj_to_device_node(struct kobject *kobj)
38{
39 return container_of(kobj, struct device_node, kobj);
40}
41
42#if defined(CONFIG_OF_DYNAMIC)
43extern int of_property_notify(int action, struct device_node *np,
44 struct property *prop);
45extern void of_node_release(struct kobject *kobj);
46#else /* CONFIG_OF_DYNAMIC */
47static inline int of_property_notify(int action, struct device_node *np,
48 struct property *prop)
49{
50 return 0;
51}
52#endif /* CONFIG_OF_DYNAMIC */
53
69843396
PA
54/**
55 * General utilities for working with live trees.
56 *
57 * All functions with two leading underscores operate
58 * without taking node references, so you either have to
59 * own the devtree lock or work on detached trees only.
60 */
61struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags);
62struct device_node *__of_node_alloc(const char *full_name, gfp_t allocflags);
63
ced4eec9 64#endif /* _LINUX_OF_PRIVATE_H */
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