From: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
Provide a helper to obtain the parent device fwnode without first
parsing the remote-endpoint as per fwnode_graph_get_remote_port_parent.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
---
v2:
- Rebase on top of Sakari's acpi-graph-clean branch and simplify
drivers/base/property.c | 13 +++++++++++++
include/linux/property.h | 2 ++
2 files changed, 15 insertions(+)
diff --git a/drivers/base/property.c b/drivers/base/property.c
index b311a6fa7d0c..310c53b6b7fc 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -1169,6 +1169,19 @@ fwnode_graph_get_next_endpoint(struct fwnode_handle *fwnode,
EXPORT_SYMBOL_GPL(fwnode_graph_get_next_endpoint);
/**
+ * fwnode_graph_get_port_parent - Return the device fwnode of a port endpoint
+ * @endpoint: Endpoint firmware node of the port
+ *
+ * Returns firmware node of the device the @endpoint belongs to.
+ */
+struct fwnode_handle *
+fwnode_graph_get_port_parent(struct fwnode_handle *endpoint)
+{
+ return fwnode_call_ptr_op(endpoint, graph_get_port_parent);
+}
+EXPORT_SYMBOL_GPL(fwnode_graph_get_port_parent);
+
+/**
* fwnode_graph_get_remote_port_parent - Return fwnode of a remote device
* @fwnode: Endpoint firmware node pointing to the remote endpoint
*
diff --git a/include/linux/property.h b/include/linux/property.h
index b9f4838d9882..af95d5d84192 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -275,6 +275,8 @@ void *device_get_mac_address(struct device *dev, char *addr, int alen);
struct fwnode_handle *fwnode_graph_get_next_endpoint(
struct fwnode_handle *fwnode, struct fwnode_handle *prev);
+struct fwnode_handle *fwnode_graph_get_port_parent(
+ struct fwnode_handle *fwnode);
struct fwnode_handle *fwnode_graph_get_remote_port_parent(
struct fwnode_handle *fwnode);
struct fwnode_handle *fwnode_graph_get_remote_port(
--
git-series 0.9.1
