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author | Thierry Reding <treding@nvidia.com> | 2014-08-26 17:33:50 +0200 |
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committer | Simon Glass <sjg@chromium.org> | 2014-10-22 16:56:40 -0600 |
commit | bc4147ab2d698bf7375a10af73ce34d76129edff (patch) | |
tree | a5e205438538b11f1c36b4771764e70034270a30 /lib/libfdt | |
parent | a84c8107d9b050fe8a31220d28588abfc2d99aee (diff) | |
download | u-boot-bc4147ab2d698bf7375a10af73ce34d76129edff.zip u-boot-bc4147ab2d698bf7375a10af73ce34d76129edff.tar.gz u-boot-bc4147ab2d698bf7375a10af73ce34d76129edff.tar.bz2 |
fdt: Add a function to count strings
Given a device tree node and a property name, the fdt_count_strings()
function counts the number of strings found in the property value.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'lib/libfdt')
-rw-r--r-- | lib/libfdt/fdt_ro.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/lib/libfdt/fdt_ro.c b/lib/libfdt/fdt_ro.c index 36af043..cb06a9b 100644 --- a/lib/libfdt/fdt_ro.c +++ b/lib/libfdt/fdt_ro.c @@ -491,6 +491,26 @@ int fdt_stringlist_contains(const char *strlist, int listlen, const char *str) return 0; } +int fdt_count_strings(const void *fdt, int node, const char *property) +{ + int length, i, count = 0; + const char *list; + + list = fdt_getprop(fdt, node, property, &length); + if (!list) + return -length; + + for (i = 0; i < length; i++) { + int len = strlen(list); + + list += len + 1; + i += len; + count++; + } + + return count; +} + int fdt_node_check_compatible(const void *fdt, int nodeoffset, const char *compatible) { |