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authorSteve Longerbeam <slongerbeam@gmail.com>2020-05-01 20:15:36 +0300
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2020-05-18 12:12:52 +0300
commit8fe784b9abb296124d0182eac35b96dbc29d049a (patch)
treeedfe3e69454373d9a5c021108f4e73630acc04e8 /include/media
parent70d4a9efee9cdd580207473379e3ee64b331ae75 (diff)
downloadlinux-8fe784b9abb296124d0182eac35b96dbc29d049a.tar.xz
media: v4l2-subdev: add v4l2_subdev_get_fwnode_pad_1_to_1
Add a convenience function that can be used as the .get_fwnode_pad operation for subdevices that map port numbers and pad indexes 1:1. The function verifies the endpoint is owned by the subdevice, and if so returns the endpoint port number. Signed-off-by: Steve Longerbeam <slongerbeam@gmail.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/media')
-rw-r--r--include/media/v4l2-subdev.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index a4848de59852..f7fe78a6f65a 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -1028,6 +1028,23 @@ static inline void *v4l2_get_subdev_hostdata(const struct v4l2_subdev *sd)
#ifdef CONFIG_MEDIA_CONTROLLER
/**
+ * v4l2_subdev_get_fwnode_pad_1_to_1 - Get pad number from a subdev fwnode
+ * endpoint, assuming 1:1 port:pad
+ *
+ * @entity - Pointer to the subdev entity
+ * @endpoint - Pointer to a parsed fwnode endpoint
+ *
+ * This function can be used as the .get_fwnode_pad operation for
+ * subdevices that map port numbers and pad indexes 1:1. If the endpoint
+ * is owned by the subdevice, the function returns the endpoint port
+ * number.
+ *
+ * Returns the endpoint port number on success or a negative error code.
+ */
+int v4l2_subdev_get_fwnode_pad_1_to_1(struct media_entity *entity,
+ struct fwnode_endpoint *endpoint);
+
+/**
* v4l2_subdev_link_validate_default - validates a media link
*
* @sd: pointer to &struct v4l2_subdev