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Date:   Sun,  3 Jan 2021 23:12:27 +0000
From:   Daniel Scally <>
        Andy Shevchenko <>,
        Laurent Pinchart <>
Subject: [PATCH v4 07/15] include: fwnode.h: Define format macros for ports and endpoints

OF, ACPI and software_nodes all implement graphs including nodes for ports
and endpoints. These are all intended to be named with a common schema,
as "port@n" and "endpoint@n" where n is an unsigned int representing the
index of the node. To ensure commonality across the subsystems, provide a
set of macros to define the format.

Suggested-by: Andy Shevchenko <>
Reviewed-by: Andy Shevchenko <>
Reviewed-by: Laurent Pinchart <>
Signed-off-by: Daniel Scally <>
Changes in v4:

	- Dropped the *_LEN macros, since we settled on using
	  strlen("port@") instead

 include/linux/fwnode.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
index 9506f8ec0974..72d36d46287d 100644
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -32,6 +32,13 @@ struct fwnode_endpoint {
 	const struct fwnode_handle *local_fwnode;
+ * ports and endpoints defined as software_nodes should all follow a common
+ * naming scheme; use these macros to ensure commonality.
+ */
+#define SWNODE_GRAPH_PORT_NAME_FMT		"port@%u"
+#define SWNODE_GRAPH_ENDPOINT_NAME_FMT		"endpoint@%u"

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