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OF: base: import of_find_node_by_name from Linux OF API 

This imports of_find_node_by_name and corresponding for_each_node_by_name
helper from Linux OF API.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
This commit is contained in:
Sebastian Hesselbarth 2013-06-13 19:39:14 +02:00 committed by Sascha Hauer
parent 80fc31dac3
commit f8a1e2a5fd
2 changed files with 38 additions and 0 deletions
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26
drivers/of/base.c
View File

@ -311,6 +311,32 @@ int of_device_is_compatible(const struct device_node *device,
}
EXPORT_SYMBOL(of_device_is_compatible);
/**
* of_find_node_by_name - Find a node by its "name" property
* @from: The node to start searching from or NULL, the node
* you pass will not be searched, only the next one
* will; typically, you pass what the previous call
* returned.
* @name: The name string to match against
*
* Returns a pointer to the node found or NULL.
*/
struct device_node *of_find_node_by_name(struct device_node *from,
const char *name)
{
struct device_node *np;
if (!from)
from = root_node;
of_tree_for_each_node(np, from)
if (np->name && !of_node_cmp(np->name, name))
return np;
return NULL;
}
EXPORT_SYMBOL(of_find_node_by_name);
/**
* of_match_node - Tell if an device_node has a matching of_match structure
* @matches: array of of device match structures to search in

12
include/of.h
View File

@ -182,6 +182,8 @@ struct cdev;
extern struct property *of_find_property(const struct device_node *np,
const char *name, int *lenp);
extern struct device_node *of_find_node_by_name(struct device_node *from,
const char *name);
extern struct device_node *of_find_node_by_path_from(struct device_node *from,
const char *path);
extern struct device_node *of_find_node_by_path(const char *path);
@ -249,6 +251,12 @@ static inline struct device_node *of_find_node_by_path(const char *path)
return NULL;
}
static inline struct device_node *of_find_node_by_name(struct device_node *from,
const char *name)
{
return NULL;
}
static inline int of_device_is_available(const struct device_node *device)
{
return 0;
@ -269,4 +277,8 @@ static inline const char *of_alias_get(struct device_node *np)
}
#endif
#define for_each_node_by_name(dn, name) \
for (dn = of_find_node_by_name(NULL, name); dn; \
dn = of_find_node_by_name(dn, name))
#endif /* __OF_H */