Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: 24786818e32e5f030b6846dd8898f3df6de2c391 (plain)
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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
/* SPDX-License-Identifier: GPL-2.0+ */
#ifndef _LINUX_OF_PRIVATE_H
#define _LINUX_OF_PRIVATE_H
/*
 * Private symbols used by OF support code
 *
 * Paul Mackerras	August 1996.
 * Copyright (C) 1996-2005 Paul Mackerras.
 */

/**
 * struct alias_prop - Alias property in 'aliases' node
 * @link:	List node to link the structure in aliases_lookup list
 * @alias:	Alias property name
 * @np:		Pointer to device_node that the alias stands for
 * @id:		Index value from end of alias name
 * @stem:	Alias string without the index
 *
 * The structure represents one alias property of 'aliases' node as
 * an entry in aliases_lookup list.
 */
struct alias_prop {
	struct list_head link;
	const char *alias;
	struct device_node *np;
	int id;
	char stem[0];
};

#if defined(CONFIG_SPARC)
#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 2
#else
#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
#endif

#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1

extern struct mutex of_mutex;
extern struct list_head aliases_lookup;
extern struct kset *of_kset;

#if defined(CONFIG_OF_DYNAMIC)
extern int of_property_notify(int action, struct device_node *np,
			      struct property *prop, struct property *old_prop);
extern void of_node_release(struct kobject *kobj);
extern int __of_changeset_apply_entries(struct of_changeset *ocs,
					int *ret_revert);
extern int __of_changeset_apply_notify(struct of_changeset *ocs);
extern int __of_changeset_revert_entries(struct of_changeset *ocs,
					 int *ret_apply);
extern int __of_changeset_revert_notify(struct of_changeset *ocs);
#else /* CONFIG_OF_DYNAMIC */
static inline int of_property_notify(int action, struct device_node *np,
				     struct property *prop, struct property *old_prop)
{
	return 0;
}
#endif /* CONFIG_OF_DYNAMIC */

#if defined(CONFIG_OF_KOBJ)
int of_node_is_attached(struct device_node *node);
int __of_add_property_sysfs(struct device_node *np, struct property *pp);
void __of_remove_property_sysfs(struct device_node *np, struct property *prop);
void __of_update_property_sysfs(struct device_node *np, struct property *newprop,
		struct property *oldprop);
int __of_attach_node_sysfs(struct device_node *np);
void __of_detach_node_sysfs(struct device_node *np);
#else
static inline int __of_add_property_sysfs(struct device_node *np, struct property *pp)
{
	return 0;
}
static inline void __of_remove_property_sysfs(struct device_node *np, struct property *prop) {}
static inline void __of_update_property_sysfs(struct device_node *np,
		struct property *newprop, struct property *oldprop) {}
static inline int __of_attach_node_sysfs(struct device_node *np)
{
	return 0;
}
static inline void __of_detach_node_sysfs(struct device_node *np) {}
#endif

#if defined(CONFIG_OF_RESOLVE)
int of_resolve_phandles(struct device_node *tree);
#endif

#if defined(CONFIG_OF_DYNAMIC)
void __of_free_phandle_cache_entry(phandle handle);
#endif

#if defined(CONFIG_OF_OVERLAY)
void of_overlay_mutex_lock(void);
void of_overlay_mutex_unlock(void);
int of_free_phandle_cache(void);
void of_populate_phandle_cache(void);
#else
static inline void of_overlay_mutex_lock(void) {};
static inline void of_overlay_mutex_unlock(void) {};
#endif

#if defined(CONFIG_OF_UNITTEST) && defined(CONFIG_OF_OVERLAY)
extern void __init unittest_unflatten_overlay_base(void);
#else
static inline void unittest_unflatten_overlay_base(void) {};
#endif

extern void *__unflatten_device_tree(const void *blob,
			      struct device_node *dad,
			      struct device_node **mynodes,
			      void *(*dt_alloc)(u64 size, u64 align),
			      bool detached);

/**
 * General utilities for working with live trees.
 *
 * All functions with two leading underscores operate
 * without taking node references, so you either have to
 * own the devtree lock or work on detached trees only.
 */
struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags);
struct device_node *__of_node_dup(const struct device_node *np,
				  const char *full_name);

struct device_node *__of_find_node_by_path(struct device_node *parent,
						const char *path);
struct device_node *__of_find_node_by_full_path(struct device_node *node,
						const char *path);

extern const void *__of_get_property(const struct device_node *np,
				     const char *name, int *lenp);
extern int __of_add_property(struct device_node *np, struct property *prop);
extern int __of_add_property_sysfs(struct device_node *np,
		struct property *prop);
extern int __of_remove_property(struct device_node *np, struct property *prop);
extern void __of_remove_property_sysfs(struct device_node *np,
		struct property *prop);
extern int __of_update_property(struct device_node *np,
		struct property *newprop, struct property **oldprop);
extern void __of_update_property_sysfs(struct device_node *np,
		struct property *newprop, struct property *oldprop);

extern int __of_attach_node_sysfs(struct device_node *np);
extern void __of_detach_node(struct device_node *np);
extern void __of_detach_node_sysfs(struct device_node *np);

extern void __of_sysfs_remove_bin_file(struct device_node *np,
				       struct property *prop);

/* illegal phandle value (set when unresolved) */
#define OF_PHANDLE_ILLEGAL	0xdeadbeef

/* iterators for transactions, used for overlays */
/* forward iterator */
#define for_each_transaction_entry(_oft, _te) \
	list_for_each_entry(_te, &(_oft)->te_list, node)

/* reverse iterator */
#define for_each_transaction_entry_reverse(_oft, _te) \
	list_for_each_entry_reverse(_te, &(_oft)->te_list, node)

#endif /* _LINUX_OF_PRIVATE_H */