LXR linux/drivers/of/of

   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
  39static inline struct device_node *kobj_to_device_node(struct kobject *kobj)
  40{
  41        return container_of(kobj, struct device_node, kobj);
  42}
  43
  44#if defined(CONFIG_OF_DYNAMIC)
  45extern int of_property_notify(int action, struct device_node *np,
  46                              struct property *prop, struct property *old_prop);
  47extern void of_node_release(struct kobject *kobj);
  48extern int __of_changeset_apply(struct of_changeset *ocs);
  49extern int __of_changeset_revert(struct of_changeset *ocs);
  50#else /* CONFIG_OF_DYNAMIC */
  51static inline int of_property_notify(int action, struct device_node *np,
  52                                     struct property *prop, struct property *old_prop)
  53{
  54        return 0;
  55}
  56#endif /* CONFIG_OF_DYNAMIC */
  57
  58/**
  59 * General utilities for working with live trees.
  60 *
  61 * All functions with two leading underscores operate
  62 * without taking node references, so you either have to
  63 * own the devtree lock or work on detached trees only.
  64 */
  65struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags);
  66__printf(2, 3) struct device_node *__of_node_dup(const struct device_node *np, const char *fmt, ...);
  67
  68extern const void *__of_get_property(const struct device_node *np,
  69                                     const char *name, int *lenp);
  70extern int __of_add_property(struct device_node *np, struct property *prop);
  71extern int __of_add_property_sysfs(struct device_node *np,
  72                struct property *prop);
  73extern int __of_remove_property(struct device_node *np, struct property *prop);
  74extern void __of_remove_property_sysfs(struct device_node *np,
  75                struct property *prop);
  76extern int __of_update_property(struct device_node *np,
  77                struct property *newprop, struct property **oldprop);
  78extern void __of_update_property_sysfs(struct device_node *np,
  79                struct property *newprop, struct property *oldprop);
  80
  81extern void __of_attach_node(struct device_node *np);
  82extern int __of_attach_node_sysfs(struct device_node *np);
  83extern void __of_detach_node(struct device_node *np);
  84extern void __of_detach_node_sysfs(struct device_node *np);
  85
  86/* iterators for transactions, used for overlays */
  87/* forward iterator */
  88#define for_each_transaction_entry(_oft, _te) \
  89        list_for_each_entry(_te, &(_oft)->te_list, node)
  90
  91/* reverse iterator */
  92#define for_each_transaction_entry_reverse(_oft, _te) \
  93        list_for_each_entry_reverse(_te, &(_oft)->te_list, node)
  94
  95#endif /* _LINUX_OF_PRIVATE_H */
  96