[libcamera-devel] [PATCH 1/5] media: media.h: Add new media link type

[Daniel Scally]

To describe in the kernel the connection between devices and their
supporting peripherals (for example, a camera sensor and the vcm
driving the focusing lens for it), add a new type of media link
to introduce the concept of these ancillary links.

Signed-off-by: Daniel Scally <djrscally at gmail.com>
---
changes since the rfc:

	- Split out into its own patch (mostly so it can be followed by patch
	#3, which corrects some media-core code that is otherwise broken by the
	new links)

 include/uapi/linux/media.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
index 200fa8462b90..afbae7213d35 100644
--- a/include/uapi/linux/media.h
+++ b/include/uapi/linux/media.h
@@ -226,6 +226,7 @@ struct media_pad_desc {
 #define MEDIA_LNK_FL_LINK_TYPE			(0xf << 28)
 #  define MEDIA_LNK_FL_DATA_LINK		(0 << 28)
 #  define MEDIA_LNK_FL_INTERFACE_LINK		(1 << 28)
+#  define MEDIA_LNK_FL_ANCILLARY_LINK		(2 << 28)
 
 struct media_link_desc {
 	struct media_pad_desc source;
-- 
2.25.1