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dm: core: Add ofnode_read_string_count()

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This provides a way to find the number of strings in a string list. Add it
and also fix up the comment for ofnode_read_string_index().

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1
This commit is contained in:
Simon Glass
2017-06-12 06:21:28 -06:00
parent 7feccfdc45
commit 8c293d6ac9
3 changed files with 39 additions and 1 deletions
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12
include/dm/ofnode.h
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@@ -359,7 +359,7 @@ int ofnode_stringlist_search(ofnode node, const char *propname,
const char *string);
/**
* fdt_stringlist_get() - obtain the string at a given index in a string list
* ofnode_read_string_index() - obtain an indexed string from a string list
*
* Note that this will successfully extract strings from properties with
* non-NUL-terminated values. For example on small-valued cell properties
@@ -379,6 +379,16 @@ int ofnode_stringlist_search(ofnode node, const char *propname,
int ofnode_read_string_index(ofnode node, const char *propname, int index,
const char **outp);
/**
* ofnode_read_string_count() - find the number of strings in a string list
*
* @node: node to check
* @propname: name of the property containing the string list
* @return:
* number of strings in the list, or -ve error value if not found
*/
int ofnode_read_string_count(ofnode node, const char *property);
/**
* ofnode_parse_phandle_with_args() - Find a node pointed by phandle in a list
*