[PATCH 6/9] fwnode: define the count_references() fwnode operation

[Bartosz Golaszewski]

Add a new fwnode callback allowing to count all references of given
firmware node.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>
---
 include/linux/fwnode.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
index 2d7e0b9245d445d473c7317bd27058abe5750b40..15acade60564ddb5f5a48f2235b626466d77dbdf 100644
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -137,6 +137,10 @@ struct fwnode_reference_args {
  * @get_parent: Return the parent of an fwnode.
  * @get_next_child_node: Return the next child node in an iteration.
  * @get_named_child_node: Return a child node with a given name.
+ * @count_references: Return the number of references in a property, including
+ *		      empty ones. @nargs_prop names the property in the
+ *		      referenced node holding the number of arguments, if NULL
+ *		      the references have no arguments.
  * @get_reference_args: Return a reference pointed to by a property, with args
  * @graph_get_next_endpoint: Return an endpoint node in an iteration.
  * @graph_get_remote_endpoint: Return the remote endpoint node of a local
@@ -180,6 +184,8 @@ struct fwnode_operations {
 	struct fwnode_handle *
 	(*get_named_child_node)(const struct fwnode_handle *fwnode,
 				const char *name);
+	int (*count_references)(const struct fwnode_handle *fwnode,
+				const char *prop, const char *nargs_prop);
 	int (*get_reference_args)(const struct fwnode_handle *fwnode,
 				  const char *prop, const char *nargs_prop,
 				  unsigned int nargs, unsigned int index,

-- 
2.47.3