dm: core: add ofnode_get_path()
Add function for retrieving full node path of a given ofnode.
This uses np->full_name if OF is live, otherwise a call to
fdt_get_path() is made.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index dd34cf8..eeeccfb 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -286,6 +286,31 @@
return fdt_get_name(gd->fdt_blob, ofnode_to_offset(node), NULL);
}
+int ofnode_get_path(ofnode node, char *buf, int buflen)
+{
+ assert(ofnode_valid(node));
+
+ if (ofnode_is_np(node)) {
+ if (strlen(node.np->full_name) >= buflen)
+ return -ENOSPC;
+
+ strcpy(buf, node.np->full_name);
+
+ return 0;
+ } else {
+ int res;
+
+ res = fdt_get_path(gd->fdt_blob, ofnode_to_offset(node), buf,
+ buflen);
+ if (!res)
+ return res;
+ else if (res == -FDT_ERR_NOSPACE)
+ return -ENOSPC;
+ else
+ return -EINVAL;
+ }
+}
+
ofnode ofnode_get_by_phandle(uint phandle)
{
ofnode node;