698433963b
Introduce helper functions for working with the live DT tree, all of them related to dynamically adding/removing nodes and properties. __of_prop_dup() copies a property dynamically __of_node_alloc() creates an empty node Bug fix about prop->len == 0 by Ionut Nicu <ioan.nicu.ext@nsn.com> Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> [glikely: Added unittest for of_copy_property and dropped fine-grained allocations] [glikely: removed name, type and phandle arguments from __of_node_alloc] Signed-off-by: Grant Likely <grant.likely@linaro.org>
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
#ifndef _LINUX_OF_PRIVATE_H
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#define _LINUX_OF_PRIVATE_H
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/*
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* Private symbols used by OF support code
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*
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* Paul Mackerras August 1996.
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* Copyright (C) 1996-2005 Paul Mackerras.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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/**
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* struct alias_prop - Alias property in 'aliases' node
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* @link: List node to link the structure in aliases_lookup list
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* @alias: Alias property name
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* @np: Pointer to device_node that the alias stands for
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* @id: Index value from end of alias name
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* @stem: Alias string without the index
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*
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* The structure represents one alias property of 'aliases' node as
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* an entry in aliases_lookup list.
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*/
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struct alias_prop {
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struct list_head link;
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const char *alias;
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struct device_node *np;
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int id;
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char stem[0];
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};
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extern struct mutex of_mutex;
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extern struct list_head aliases_lookup;
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static inline struct device_node *kobj_to_device_node(struct kobject *kobj)
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{
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return container_of(kobj, struct device_node, kobj);
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}
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#if defined(CONFIG_OF_DYNAMIC)
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extern int of_property_notify(int action, struct device_node *np,
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struct property *prop);
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extern void of_node_release(struct kobject *kobj);
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#else /* CONFIG_OF_DYNAMIC */
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static inline int of_property_notify(int action, struct device_node *np,
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struct property *prop)
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{
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return 0;
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}
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#endif /* CONFIG_OF_DYNAMIC */
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/**
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* General utilities for working with live trees.
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*
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* All functions with two leading underscores operate
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* without taking node references, so you either have to
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* own the devtree lock or work on detached trees only.
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*/
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struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags);
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struct device_node *__of_node_alloc(const char *full_name, gfp_t allocflags);
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#endif /* _LINUX_OF_PRIVATE_H */
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