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OF: base: import of_find_compatible_node from Linux OF API 

This imports of_find_compatible_node and corresponding for_each_compatible_node
helper from Linux OF API.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
This commit is contained in:
Sebastian Hesselbarth 2013-06-13 20:01:23 +02:00 committed by Sascha Hauer
parent f8a1e2a5fd
commit 464c393507
2 changed files with 43 additions and 0 deletions
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30
drivers/of/base.c
View File

@ -337,6 +337,36 @@ struct device_node *of_find_node_by_name(struct device_node *from,
}
EXPORT_SYMBOL(of_find_node_by_name);
/**
* of_find_compatible_node - Find a node based on type and one of the
* tokens in its "compatible" 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.
* @type: The type string to match "device_type" or NULL to ignore
* (currently always ignored in barebox)
* @compatible: The string to match to one of the tokens in the device
* "compatible" list.
*
* Returns a pointer to the node found or NULL.
*/
struct device_node *of_find_compatible_node(struct device_node *from,
const char *type, const char *compatible)
{
struct device_node *np;
if (!from)
from = root_node;
of_tree_for_each_node(np, from)
if (of_device_is_compatible(np, compatible))
return np;
return NULL;
}
EXPORT_SYMBOL(of_find_compatible_node);
/**
* of_match_node - Tell if an device_node has a matching of_match structure
* @matches: array of of device match structures to search in

13
include/of.h
View File

@ -187,6 +187,8 @@ extern struct device_node *of_find_node_by_name(struct device_node *from,
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);
extern struct device_node *of_find_compatible_node(struct device_node *from,
const char *type, const char *compat);
extern int of_device_is_available(const struct device_node *device);
extern void of_alias_scan(void);
@ -257,6 +259,14 @@ static inline struct device_node *of_find_node_by_name(struct device_node *from,
return NULL;
}
static inline struct device_node *of_find_compatible_node(
struct device_node *from,
const char *type,
const char *compat)
{
return NULL;
}
static inline int of_device_is_available(const struct device_node *device)
{
return 0;
@ -280,5 +290,8 @@ static inline const char *of_alias_get(struct device_node *np)
#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))
#define for_each_compatible_node(dn, type, compatible) \
for (dn = of_find_compatible_node(NULL, type, compatible); dn; \
dn = of_find_compatible_node(dn, type, compatible))
#endif /* __OF_H */