Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef _LINUX_OF_H
2#define _LINUX_OF_H
3/*
4 * Definitions for talking to the Open Firmware PROM on
5 * Power Macintosh and other computers.
6 *
7 * Copyright (C) 1996-2005 Paul Mackerras.
8 *
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.
12 *
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.
17 */
18#include <linux/types.h>
19
20#include <asm/bitops.h>
21#include <asm/prom.h>
22
23/* flag descriptions */
24#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
25#define OF_DETACHED 2 /* node has been detached from the device tree */
26
27#define OF_BAD_ADDR ((u64)-1)
28
29extern struct device_node *of_find_node_by_name(struct device_node *from,
30 const char *name);
31#define for_each_node_by_name(dn, name) \
32 for (dn = of_find_node_by_name(NULL, name); dn; \
33 dn = of_find_node_by_name(dn, name))
34extern struct device_node *of_find_node_by_type(struct device_node *from,
35 const char *type);
36#define for_each_node_by_type(dn, type) \
37 for (dn = of_find_node_by_type(NULL, type); dn; \
38 dn = of_find_node_by_type(dn, type))
39extern struct device_node *of_find_compatible_node(struct device_node *from,
40 const char *type, const char *compat);
41#define for_each_compatible_node(dn, type, compatible) \
42 for (dn = of_find_compatible_node(NULL, type, compatible); dn; \
43 dn = of_find_compatible_node(dn, type, compatible))
44extern struct device_node *of_find_node_by_path(const char *path);
45extern struct device_node *of_find_node_by_phandle(phandle handle);
46extern struct device_node *of_get_parent(const struct device_node *node);
47extern struct device_node *of_get_next_child(const struct device_node *node,
48 struct device_node *prev);
49extern struct property *of_find_property(const struct device_node *np,
50 const char *name,
51 int *lenp);
52extern int of_device_is_compatible(const struct device_node *device,
53 const char *);
54extern const void *of_get_property(const struct device_node *node,
55 const char *name,
56 int *lenp);
57#define get_property(a, b, c) of_get_property((a), (b), (c))
58extern int of_n_addr_cells(struct device_node *np);
59extern int of_n_size_cells(struct device_node *np);
60
61#endif /* _LINUX_OF_H */