On 18 August 2014 01:16, Thierry Reding thierry.reding@gmail.com wrote:
From: Thierry Reding treding@nvidia.com
The fdt_for_each_subnode() iterator macro provided by this patch can be used to iterate over a device tree node's subnodes. At each iteration a loop variable will be set to the next subnode.
Signed-off-by: Thierry Reding treding@nvidia.com
Acked-by: Simon Glass sjg@chromium.org
Will this go upstream to dtc at some point?
include/libfdt.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/include/libfdt.h b/include/libfdt.h index 4d7fb2681669..0330d7a29a58 100644 --- a/include/libfdt.h +++ b/include/libfdt.h @@ -163,6 +163,26 @@ int fdt_first_subnode(const void *fdt, int offset); */ int fdt_next_subnode(const void *fdt, int offset);
+/**
- fdt_for_each_subnode - iterate over all subnodes of a parent
- This is actually a wrapper around a for loop and would be used like so:
fdt_for_each_subnode(fdt, node, parent) {
...
use node
...
}
- @fdt: FDT blob
- @node: child node
- @parent: parent node
It might be worth mentioning the type of each of these since it is not in the macro.
- */
+#define fdt_for_each_subnode(fdt, node, parent) \
for (node = fdt_first_subnode(fdt, parent); \node >= 0; \node = fdt_next_subnode(fdt, node))/**********************************************************************/ /* General functions */ /**********************************************************************/ -- 2.0.4
Regards, Simon