diff options
Diffstat (limited to 'lib/libfdt/fdt.c')
-rw-r--r-- | lib/libfdt/fdt.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/libfdt/fdt.c b/lib/libfdt/fdt.c index 387e3544b7e..154e9a44617 100644 --- a/lib/libfdt/fdt.c +++ b/lib/libfdt/fdt.c @@ -202,6 +202,34 @@ int fdt_next_node(const void *fdt, int offset, int *depth) return offset; } +int fdt_first_subnode(const void *fdt, int offset) +{ + int depth = 0; + + offset = fdt_next_node(fdt, offset, &depth); + if (offset < 0 || depth != 1) + return -FDT_ERR_NOTFOUND; + + return offset; +} + +int fdt_next_subnode(const void *fdt, int offset) +{ + int depth = 1; + + /* + * With respect to the parent, the depth of the next subnode will be + * the same as the last. + */ + do { + offset = fdt_next_node(fdt, offset, &depth); + if (offset < 0 || depth < 1) + return -FDT_ERR_NOTFOUND; + } while (depth > 1); + + return offset; +} + const char *_fdt_find_string(const char *strtab, int tabsize, const char *s) { int len = strlen(s) + 1; |