kernel/git/stable/linux.git/drivers/media/mc, branch linux-6.0.y

media: mc-entity: Add a new helper function to get a remote pad for a pad

2022-07-17T10:23:51+00:00

The newly added media_entity_remote_source_pad_unique() helper function handles use cases where the entity has a link enabled uniqueness constraint covering all pads. There are use cases where the constraint covers a specific pad only. Add a new media_pad_remote_pad_unique() function to handle this. It operates as media_entity_remote_source_pad_unique(), but on a given pad instead of on the entity. Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: mc-entity: Add a new helper function to get a remote pad

2022-07-17T10:23:10+00:00

The media_entity_remote_pad_first() helper function returns the first remote pad it finds connected to a given pad. Beside being possibly non-deterministic (as it stops at the first enabled link), the fact that it returns the first match makes it unsuitable for drivers that need to guarantee that a single link is enabled, for instance when an entity can process data from one of multiple sources at a time. For those use cases, add a new helper function, media_entity_remote_pad_unique(), that operates on an entity and returns a remote pad, with a guarantee that only one link is enabled. To ease its use in drivers, also add an inline wrapper that locates source pads specifically. A wrapper that locates sink pads can easily be added when needed. Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: mc-entity: Rename media_entity_remote_pad() to media_pad_remote_pad_first()

2022-07-17T10:21:35+00:00

The media_entity_remote_pad() is misnamed, as it operates on a pad and not an entity. Rename it to media_pad_remote_pad_first() to clarify its behaviour. Signed-off-by: Laurent Pinchart Reviewed-by: Hans Verkuil Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: entity: Use dedicated data link iterator

2022-07-15T14:32:58+00:00

Where iteration over links for an entity is clearly assuming that all of those links are data links, use the new iterator to guarantee that assumption is met. Reviewed-by: Laurent Pinchart Signed-off-by: Daniel Scally Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: entity: Add iterator for entity data links

2022-07-15T14:24:40+00:00

Iterating over the links for an entity is a somewhat common need through the media subsystem, but generally the assumption is that they will all be data links. To meet that assumption add a new macro that iterates through an entity's links and skips non-data links. Signed-off-by: Daniel Scally Reviewed-by: Laurent Pinchart Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: mc: delete redundant code in __media_device_unregister_entity

2022-04-24T07:14:19+00:00

media_gobj_destroy has already set graph_obj.mdev to NULL. There is no need to set it again. [Sakari Ailus: Remove extra newline, rewrap commit msg] Signed-off-by: Hangyu Hua Reviewed-by: Laurent Pinchart Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: mc: Set bus_info in media_device_init()

2022-04-24T07:05:53+00:00

Set bus_info field based on struct device in media_device_init() and remove corresponding code from drivers. Also update media_device_init() documentation: the dev field must be now initialised before calling it. Signed-off-by: Sakari Ailus Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

media: mc: Remove redundant documentation

2022-04-24T07:01:38+00:00

Remove redundant kerneldoc documentation in mc-device.c. The functions are already documented in media-device.h, where non-redundant documentation is also moved. Signed-off-by: Sakari Ailus Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

media: entity: Add support for ancillary links

2022-04-24T06:59:09+00:00

Add functions to create ancillary links, so that they don't need to be manually created by users. Reviewed-by: Laurent Pinchart Signed-off-by: Daniel Scally Reviewed-by: Jean-Michel Hautbois Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: entity: Add link_type_name() helper

2022-04-24T06:58:44+00:00

Now we have three types of media link, printing the right name during debug output is slightly more complicated. Add a helper function to make it easier. Reviewed-by: Laurent Pinchart Signed-off-by: Daniel Scally Reviewed-by: Jean-Michel Hautbois Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab