diff options
| author | Simon Glass <sjg@chromium.org> | 2012-04-02 13:18:42 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-05-15 08:31:36 +0200 |
| commit | 3ddecfc74086aa185a2f671cc07cb826b72d35f0 (patch) | |
| tree | ae643a3369183c2286b8e2a9c503eb4f40d759be /lib | |
| parent | 96875e7d3b9900d0e63f0b591ff5693b31c4d9c3 (diff) | |
fdt: Add function to return next compatible subnode
We need to iterate through subnodes of a parent, looking only at
compatible nodes. Add a utility function to do this for us.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/fdtdec.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 4a5ab712b54..76d38089ee3 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -133,6 +133,21 @@ int fdtdec_next_compatible(const void *blob, int node, return fdt_node_offset_by_compatible(blob, node, compat_names[id]); } +int fdtdec_next_compatible_subnode(const void *blob, int node, + enum fdt_compat_id id, int *depthp) +{ + do { + node = fdt_next_node(blob, node, depthp); + } while (*depthp > 1); + + /* If this is a direct subnode, and compatible, return it */ + if (*depthp == 1 && 0 == fdt_node_check_compatible( + blob, node, compat_names[id])) + return node; + + return -FDT_ERR_NOTFOUND; +} + int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id, int *upto) { |