LXR linux/include/linux/of.h

   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#include <linux/bitops.h>
  20#include <linux/mod_devicetable.h>
  21
  22#include <asm/prom.h>
  23
  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 */
  27
  28#define OF_BAD_ADDR     ((u64)-1)
  29
  30extern struct device_node *of_find_node_by_name(struct device_node *from,
  31        const char *name);
  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))
  35extern struct device_node *of_find_node_by_type(struct device_node *from,
  36        const char *type);
  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))
  40extern 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))
  45extern 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))
  50extern struct device_node *of_find_node_by_path(const char *path);
  51extern struct device_node *of_find_node_by_phandle(phandle handle);
  52extern struct device_node *of_get_parent(const struct device_node *node);
  53extern struct device_node *of_get_next_parent(struct device_node *node);
  54extern 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))
  59
  60extern 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))
  65
  66extern struct property *of_find_property(const struct device_node *np,
  67                                         const char *name,
  68                                         int *lenp);
  69extern int of_device_is_compatible(const struct device_node *device,
  70                                   const char *);
  71extern int of_device_is_available(const struct device_node *device);
  72extern const void *of_get_property(const struct device_node *node,
  73                                const char *name,
  74                                int *lenp);
  75extern int of_n_addr_cells(struct device_node *np);
  76extern int of_n_size_cells(struct device_node *np);
  77extern const struct of_device_id *of_match_node(
  78        const struct of_device_id *matches, const struct device_node *node);
  79extern int of_modalias_node(struct device_node *node, char *modalias, int len);
  80extern struct device_node *of_parse_phandle(struct device_node *np,
  81                                            const char *phandle_name,
  82                                            int index);
  83extern int of_parse_phandles_with_args(struct device_node *np,
  84        const char *list_name, const char *cells_name, int index,
  85        struct device_node **out_node, const void **out_args);
  86
  87#endif /* _LINUX_OF_H */
  88