| Message ID | 20211213232849.40071-2-djrscally@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce ancillary links | expand |
Hi Daniel, Thank you for the patch. On Mon, Dec 13, 2021 at 11:28:45PM +0000, Daniel Scally wrote: > 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) This needs documentation in Documentation/userspace-api/media/mediactl/media-types.rst and in media-controller-model.rst. The latter should probably be a bit more detailed to explain the use cases with at least one example. > > struct media_link_desc { > struct media_pad_desc source;
Hi Laurent On 14/12/2021 21:50, Laurent Pinchart wrote: > Hi Daniel, > > Thank you for the patch. > > On Mon, Dec 13, 2021 at 11:28:45PM +0000, Daniel Scally wrote: >> 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) > This needs documentation in > Documentation/userspace-api/media/mediactl/media-types.rst and in > media-controller-model.rst. The latter should probably be a bit more > detailed to explain the use cases with at least one example. Agreed - I'll add some for the v2 > >> >> struct media_link_desc { >> struct media_pad_desc source;
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;
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(+)