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

Daniel Scally
2021-12-13T23:29:09Z

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@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