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of: Add of_property_match_string() to find index into a string list

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Add a helper function for finding the index of a string in a string
list property.  This helper is useful for bindings that use a separate
*-name property for attaching names to tuples in another property such
as 'reg' or 'gpios'.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Grant Likely
2011-12-12 09:25:58 -07:00
parent dcd6c92267
commit 7aff0fe330
4 changed files with 70 additions and 0 deletions
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include/linux/of.h
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@@ -217,6 +217,9 @@ extern int of_property_read_string(struct device_node *np,
extern int of_property_read_string_index(struct device_node *np,
const char *propname,
int index, const char **output);
extern int of_property_match_string(struct device_node *np,
const char *propname,
const char *string);
extern int of_property_count_strings(struct device_node *np,
const char *propname);
extern int of_device_is_compatible(const struct device_node *device,