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authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>2020-07-01 08:21:37 +0200
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2020-07-19 14:16:09 +0200
commit35694afc92646ac24d7f3ef34a7387876d998fe7 (patch)
tree72219435a624de00328a81e6253d66d737a40afe /include
parentmedia: i2c: Add RDACM20 driver (diff)
downloadlinux-35694afc92646ac24d7f3ef34a7387876d998fe7.tar.xz
linux-35694afc92646ac24d7f3ef34a7387876d998fe7.zip
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/property.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/property.h b/include/linux/property.h
index 10d03572f52e..9f805c442819 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -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
*