4 * Definitions for talking to the Open Firmware PROM on
5 * Power Macintosh and other computers.
7 * Copyright (C) 1996-2005 Paul Mackerras.
9 * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
10 * Updates for SPARC64 by David S. Miller
11 * Derived from PowerPC and Sparc prom.h files by Stephen Rothwell, IBM Corp.
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
18 #include <linux/types.h>
19 #include <linux/bitops.h>
20 #include <linux/mod_devicetable.h>
24 /* flag descriptions */
25 #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
26 #define OF_DETACHED 2 /* node has been detached from the device tree */
28 #define OF_BAD_ADDR ((u64)-1)
30 extern struct device_node *of_find_node_by_name(struct device_node *from,
32 #define for_each_node_by_name(dn, name) \
33 for (dn = of_find_node_by_name(NULL, name); dn; \
34 dn = of_find_node_by_name(dn, name))
35 extern struct device_node *of_find_node_by_type(struct device_node *from,
37 #define for_each_node_by_type(dn, type) \
38 for (dn = of_find_node_by_type(NULL, type); dn; \
39 dn = of_find_node_by_type(dn, type))
40 extern struct device_node *of_find_compatible_node(struct device_node *from,
41 const char *type, const char *compat);
42 #define for_each_compatible_node(dn, type, compatible) \
43 for (dn = of_find_compatible_node(NULL, type, compatible); dn; \
44 dn = of_find_compatible_node(dn, type, compatible))
45 extern struct device_node *of_find_matching_node(struct device_node *from,
46 const struct of_device_id *matches);
47 #define for_each_matching_node(dn, matches) \
48 for (dn = of_find_matching_node(NULL, matches); dn; \
49 dn = of_find_matching_node(dn, matches))
50 extern struct device_node *of_find_node_by_path(const char *path);
51 extern struct device_node *of_find_node_by_phandle(phandle handle);
52 extern struct device_node *of_get_parent(const struct device_node *node);
53 extern struct device_node *of_get_next_parent(struct device_node *node);
54 extern struct device_node *of_get_next_child(const struct device_node *node,
55 struct device_node *prev);
56 #define for_each_child_of_node(parent, child) \
57 for (child = of_get_next_child(parent, NULL); child != NULL; \
58 child = of_get_next_child(parent, child))
60 extern struct device_node *of_find_node_with_property(
61 struct device_node *from, const char *prop_name);
62 #define for_each_node_with_property(dn, prop_name) \
63 for (dn = of_find_node_with_property(NULL, prop_name); dn; \
64 dn = of_find_node_with_property(dn, prop_name))
66 extern struct property *of_find_property(const struct device_node *np,
69 extern int of_device_is_compatible(const struct device_node *device,
71 extern int of_device_is_available(const struct device_node *device);
72 extern const void *of_get_property(const struct device_node *node,
75 extern int of_n_addr_cells(struct device_node *np);
76 extern int of_n_size_cells(struct device_node *np);
77 extern const struct of_device_id *of_match_node(
78 const struct of_device_id *matches, const struct device_node *node);
79 extern int of_modalias_node(struct device_node *node, char *modalias, int len);
80 extern int of_parse_phandles_with_args(struct device_node *np,
81 const char *list_name, const char *cells_name, int index,
82 struct device_node **out_node, const void **out_args);
84 #endif /* _LINUX_OF_H */