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of: Add of_alias_get function 

This is used to retrieve the name of the alias for a given
devicenode.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2013-05-26 15:30:28 +02:00
parent abee214ba5
commit 1f0a3175ec
2 changed files with 19 additions and 0 deletions
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13
drivers/of/base.c
View File

@ -212,6 +212,19 @@ int of_alias_get_id(struct device_node *np, const char *stem)
}
EXPORT_SYMBOL_GPL(of_alias_get_id);
const char *of_alias_get(struct device_node *np)
{
struct property *pp;
list_for_each_entry(pp, &of_aliases->properties, list) {
if (!strcmp(np->full_name, pp->value))
return pp->name;
}
return NULL;
}
EXPORT_SYMBOL_GPL(of_alias_get);
u64 of_translate_address(struct device_node *node, const __be32 *in_addr)
{
struct property *p;

6
include/of.h
View File

@ -176,6 +176,7 @@ struct cdev;
int of_parse_partitions(struct cdev *cdev, struct device_node *node);
int of_alias_get_id(struct device_node *np, const char *stem);
const char *of_alias_get(struct device_node *np);
int of_device_is_stdout_path(struct device_d *dev);
const char *of_get_model(void);
void *of_flatten_dtb(struct device_node *node);
@ -192,6 +193,11 @@ static inline int of_alias_get_id(struct device_node *np, const char *stem)
return -ENOENT;
}
static inline const char *of_alias_get(struct device_node *np)
{
return NULL;
}
static inline int of_device_is_stdout_path(struct device_d *dev)
{
return 0;