Commit 35694afc authored Jul 01, 2020 by Laurent Pinchart Committed by Mauro Carvalho Chehab Jul 19, 2020

media: device property: Add a function to test is a fwnode is a graph endpoint

Drivers may need to test if a fwnode is a graph endpoint. To avoid
hand-written solutions that wouldn't work for all fwnode types, add a
new fwnode_graph_is_endpoint() function for this purpose. We don't need
to wire it up to different backends for OF and ACPI for now, as the
implementation can simply be based on checkout the presence of a
remote-endpoint property.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

parent 34009bff

include/linux/property.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -389,6 +389,11 @@ struct fwnode_handle *
		fwnode_graph_get_remote_node(const struct fwnode_handle *fwnode, u32 port,
		u32 endpoint);

		static inline bool fwnode_graph_is_endpoint(struct fwnode_handle *fwnode)
		{
		return fwnode_property_present(fwnode, "remote-endpoint");
		}

		/*
		* Fwnode lookup flags
		*