core: ofnode: add ofnode_get_parent function

The Rockchip video drivers need to walk the ofnode-parrents to find an enclosing device that has a UCLASS_DISPLAY driver bound. This adds a ofnode_get_parent()-function that returns the parent-node. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com> Reviewed-by: Anatolij Gustschin <agust@denx.de>

core: ofnode: add ofnode_get_parent function
The Rockchip video drivers need to walk the ofnode-parrents to find an enclosing device that has a UCLASS_DISPLAY driver bound. This adds a ofnode_get_parent()-function that returns the parent-node. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com> Reviewed-by: Anatolij Gustschin <agust@denx.de>
Philipp Tomsich · Anatolij Gustschin
1 parent f0f6917188
Showing 2 changed files with 22 additions and 0 deletions Side-by-side Diff
drivers/core/ofnode.c
include/dm/ofnode.h
@@ -165,6 +165,20 @@
 		fdt_next_subnode(gd->fdt_blob, ofnode_to_offset(node)));
 }
  
+ofnode ofnode_get_parent(ofnode node)
+{
+	ofnode parent;
+
+	assert(ofnode_valid(node));
+	if (ofnode_is_np(node))
+		parent = np_to_ofnode(of_get_parent(ofnode_to_np(node)));
+	else
+		parent.of_offset = fdt_parent_offset(gd->fdt_blob,
+						     ofnode_to_offset(node));
+
+	return parent;
+}
+
 const char *ofnode_get_name(ofnode node)
 {
 	assert(ofnode_valid(node));
@@ -302,6 +302,14 @@
 ofnode ofnode_next_subnode(ofnode node);
  
 /**
+ * ofnode_get_parent() - get the ofnode's parent (enclosing ofnode)
+ *
+ * @node: valid node to look up
+ * @return ofnode reference of the parent node
+ */
+ofnode ofnode_get_parent(ofnode node);
+
+/**
  * ofnode_get_name() - get the name of a node
  *
  * @node: valid node to look up
...	...	@@ -165,6 +165,20 @@
165	165	fdt_next_subnode(gd->fdt_blob, ofnode_to_offset(node)));
166	166	}
167	167
	168	+ofnode ofnode_get_parent(ofnode node)
	169	+{
	170	+ ofnode parent;
	171	+
	172	+ assert(ofnode_valid(node));
	173	+ if (ofnode_is_np(node))
	174	+ parent = np_to_ofnode(of_get_parent(ofnode_to_np(node)));
	175	+ else
	176	+ parent.of_offset = fdt_parent_offset(gd->fdt_blob,
	177	+ ofnode_to_offset(node));
	178	+
	179	+ return parent;
	180	+}
	181	+
168	182	const char *ofnode_get_name(ofnode node)
169	183	{
170	184	assert(ofnode_valid(node));
...	...	@@ -302,6 +302,14 @@
302	302	ofnode ofnode_next_subnode(ofnode node);
303	303
304	304	/**
	305	+ * ofnode_get_parent() - get the ofnode's parent (enclosing ofnode)
	306	+ *
	307	+ * @node: valid node to look up
	308	+ * @return ofnode reference of the parent node
	309	+ */
	310	+ofnode ofnode_get_parent(ofnode node);
	311	+
	312	+/**
305	313	* ofnode_get_name() - get the name of a node
306	314	*
307	315	* @node: valid node to look up