sysmo-bts
/
barebox
9
0
Fork 0
Code Releases Activity

OF: base: import of_parse_phandle from Linux OF API 

This imports of_parse_phandle from Linux OF API.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
This commit is contained in:
Sebastian Hesselbarth 2013-06-14 15:33:10 +02:00 committed by Sascha Hauer
parent 1d68e58532
commit 083995f815
2 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/of/base.c
View File

@ -838,6 +838,29 @@ int of_property_write_u32_array(struct device_node *np,
return 0;
}
/**
* of_parse_phandle - Resolve a phandle property to a device_node pointer
* @np: Pointer to device node holding phandle property
* @phandle_name: Name of property holding a phandle value
* @index: For properties holding a table of phandles, this is the index into
* the table
*
* Returns the device_node pointer found or NULL.
*/
struct device_node *of_parse_phandle(const struct device_node *np,
const char *phandle_name, int index)
{
const __be32 *phandle;
int size;
phandle = of_get_property(np, phandle_name, &size);
if ((!phandle) || (size < sizeof(*phandle) * (index + 1)))
return NULL;
return of_find_node_by_phandle(be32_to_cpup(phandle + index));
}
EXPORT_SYMBOL(of_parse_phandle);
/**
* of_parse_phandles_with_args - Find a node pointed by phandle in a list
* @np: pointer to a device tree node containing a list

10
include/of.h
View File

@ -216,6 +216,10 @@ extern int of_property_match_string(struct device_node *np,
extern int of_property_count_strings(struct device_node *np,
const char *propname);
extern struct device_node *of_parse_phandle(const struct device_node *np,
const char *phandle_name,
int index);
extern void of_alias_scan(void);
extern int of_alias_get_id(struct device_node *np, const char *stem);
extern const char *of_alias_get(struct device_node *np);
@ -348,6 +352,12 @@ static inline int of_property_count_strings(struct device_node *np,
return -ENOSYS;
}
static inline struct device_node *of_parse_phandle(const struct device_node *np,
const char *phandle_name, int index)
{
return NULL;
}
static inline struct device_node *of_find_node_by_path_from(
struct device_node *from, const char *path)
{