diff options
| author | Che-Liang Chiou <clchiou@chromium.org> | 2011-07-02 02:18:32 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2011-08-29 10:58:42 -0700 |
| commit | 735004e2151521ea06439b32e6a88b5f65e343f9 (patch) | |
| tree | c9a14a14abe7970bbb224191e4bb6576af541609 /lib/libfdt | |
| parent | e6810c3099876d58f0525d592a391ed2031a3298 (diff) | |
fdt: add sub nodes from a path
BUG=chromium-os:15744
TEST=recompile in user space and run unit tests
Change-Id: Ie3d0eb0656650bb36d2daea83a60c4f9f1b15970
Reviewed-on: http://gerrit.chromium.org/gerrit/3571
Tested-by: Che-Liang Chiou <clchiou@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'lib/libfdt')
| -rw-r--r-- | lib/libfdt/fdt_rw.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/libfdt/fdt_rw.c b/lib/libfdt/fdt_rw.c index 5c27a677e35..bc5f60a764a 100644 --- a/lib/libfdt/fdt_rw.c +++ b/lib/libfdt/fdt_rw.c @@ -354,6 +354,35 @@ int fdt_add_subnode(void *fdt, int parentoffset, const char *name) return fdt_add_subnode_namelen(fdt, parentoffset, name, strlen(name)); } +int fdt_add_subnodes_from_path(void *fdt, int parentoffset, char *path) +{ + int err; + char *sep; + + /* skip leading '/' */ + while (*path == '/') + path++; + + /* if sep is NULL, there is no more nodes to add */ + for (err = parentoffset, sep = path; + parentoffset >= 0 && sep && *path; + parentoffset = err, path = sep + 1) { + sep = strchr(path, '/'); + if (path == sep) /* repeating '/' */ + continue; + + if (sep) + *sep = '\0'; + err = fdt_add_subnode(fdt, parentoffset, path); + if (err == -FDT_ERR_EXISTS) + err = fdt_subnode_offset(fdt, parentoffset, path); + if (sep) + *sep = '/'; + } + + return parentoffset; +} + int fdt_del_node(void *fdt, int nodeoffset) { int endoffset; |