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fdt: Add a function to get the index of a string

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Given a device tree node and a property name, the new fdt_find_string()
function will look up a given string in the string list contained in the
property's value and return its index.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Thierry Reding
2014-08-26 17:33:51 +02:00
committed by Simon Glass
parent bc4147ab2d
commit fc503c1791
2 changed files with 37 additions and 0 deletions
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11
include/libfdt.h
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@@ -866,6 +866,17 @@ int fdt_stringlist_contains(const char *strlist, int listlen, const char *str);
*/
int fdt_count_strings(const void *fdt, int node, const char *property);
/**
* fdt_find_string - find a string in a string list and return its index
* @fdt: pointer to the device tree blob
* @node: offset of the node
* @property: name of the property containing the string list
* @string: string to look up in the string list
* @return: the index of the string or negative on error
*/
int fdt_find_string(const void *fdt, int node, const char *property,
const char *string);
/**********************************************************************/
/* Read-only functions (addressing related) */
/**********************************************************************/