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Linux kernel mirror (for testing)
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kernel
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linux
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
34extern struct mutex of_mutex;
35extern struct list_head aliases_lookup;
36extern struct kset *of_kset;
37
38#if defined(CONFIG_OF_DYNAMIC)
39extern int of_property_notify(int action, struct device_node *np,
40 struct property *prop, struct property *old_prop);
41extern void of_node_release(struct kobject *kobj);
42extern int __of_changeset_apply_entries(struct of_changeset *ocs,
43 int *ret_revert);
44extern int __of_changeset_apply_notify(struct of_changeset *ocs);
45extern int __of_changeset_revert_entries(struct of_changeset *ocs,
46 int *ret_apply);
47extern int __of_changeset_revert_notify(struct of_changeset *ocs);
48#else /* CONFIG_OF_DYNAMIC */
49static inline int of_property_notify(int action, struct device_node *np,
50 struct property *prop, struct property *old_prop)
51{
52 return 0;
53}
54#endif /* CONFIG_OF_DYNAMIC */
55
56#if defined(CONFIG_OF_KOBJ)
57int of_node_is_attached(struct device_node *node);
58int __of_add_property_sysfs(struct device_node *np, struct property *pp);
59void __of_remove_property_sysfs(struct device_node *np, struct property *prop);
60void __of_update_property_sysfs(struct device_node *np, struct property *newprop,
61 struct property *oldprop);
62int __of_attach_node_sysfs(struct device_node *np);
63void __of_detach_node_sysfs(struct device_node *np);
64#else
65static inline int __of_add_property_sysfs(struct device_node *np, struct property *pp)
66{
67 return 0;
68}
69static inline void __of_remove_property_sysfs(struct device_node *np, struct property *prop) {}
70static inline void __of_update_property_sysfs(struct device_node *np,
71 struct property *newprop, struct property *oldprop) {}
72static inline int __of_attach_node_sysfs(struct device_node *np)
73{
74 return 0;
75}
76static inline void __of_detach_node_sysfs(struct device_node *np) {}
77#endif
78
79#if defined(CONFIG_OF_RESOLVE)
80int of_resolve_phandles(struct device_node *tree);
81#endif
82
83#if defined(CONFIG_OF_OVERLAY)
84void of_overlay_mutex_lock(void);
85void of_overlay_mutex_unlock(void);
86#else
87static inline void of_overlay_mutex_lock(void) {};
88static inline void of_overlay_mutex_unlock(void) {};
89#endif
90
91#if defined(CONFIG_OF_UNITTEST) && defined(CONFIG_OF_OVERLAY)
92extern void __init unittest_unflatten_overlay_base(void);
93#else
94static inline void unittest_unflatten_overlay_base(void) {};
95#endif
96
97extern void *__unflatten_device_tree(const void *blob,
98 struct device_node *dad,
99 struct device_node **mynodes,
100 void *(*dt_alloc)(u64 size, u64 align),
101 bool detached);
102
103/**
104 * General utilities for working with live trees.
105 *
106 * All functions with two leading underscores operate
107 * without taking node references, so you either have to
108 * own the devtree lock or work on detached trees only.
109 */
110struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags);
111__printf(2, 3) struct device_node *__of_node_dup(const struct device_node *np, const char *fmt, ...);
112
113struct device_node *__of_find_node_by_path(struct device_node *parent,
114 const char *path);
115struct device_node *__of_find_node_by_full_path(struct device_node *node,
116 const char *path);
117
118extern const void *__of_get_property(const struct device_node *np,
119 const char *name, int *lenp);
120extern int __of_add_property(struct device_node *np, struct property *prop);
121extern int __of_add_property_sysfs(struct device_node *np,
122 struct property *prop);
123extern int __of_remove_property(struct device_node *np, struct property *prop);
124extern void __of_remove_property_sysfs(struct device_node *np,
125 struct property *prop);
126extern int __of_update_property(struct device_node *np,
127 struct property *newprop, struct property **oldprop);
128extern void __of_update_property_sysfs(struct device_node *np,
129 struct property *newprop, struct property *oldprop);
130
131extern int __of_attach_node_sysfs(struct device_node *np);
132extern void __of_detach_node(struct device_node *np);
133extern void __of_detach_node_sysfs(struct device_node *np);
134
135extern void __of_sysfs_remove_bin_file(struct device_node *np,
136 struct property *prop);
137
138/* iterators for transactions, used for overlays */
139/* forward iterator */
140#define for_each_transaction_entry(_oft, _te) \
141 list_for_each_entry(_te, &(_oft)->te_list, node)
142
143/* reverse iterator */
144#define for_each_transaction_entry_reverse(_oft, _te) \
145 list_for_each_entry_reverse(_te, &(_oft)->te_list, node)
146
147#endif /* _LINUX_OF_PRIVATE_H */