[v15,00/19] v4l: routing and streams support

Hi,

This is v15 of the streams series. The v14 can be found from:

https://lore.kernel.org/all/20220831141357.1396081-1-tomi.valkeinen@ideasonboard.com/

My work branch with additional drivers can be found from:

git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux.git streams/work-v15

And there's also the v4l-utils series v2 to add support to v4l2-ctl and
media-ctl:

https://lore.kernel.org/all/20220714132116.132498-1-tomi.valkeinen@ideasonboard.com/

This series is based on top of linux-media-stage, and this series is now
smaller as many patches from v14 have been merged.

Changes in v15:

media: v4l2-subdev: Sort includes
- New patch

media: add V4L2_SUBDEV_CAP_STREAMS
- Small refactor to use 'streams_subdev' variable

media: Documentation: Add GS_ROUTING documentation
- Improve error code descriptions

media: subdev: Add [GS]_ROUTING subdev ioctls and operations
- Return E2BIG when there are too many routes in VIDIOC_SUBDEV_S_ROUTING
- Use plain bitshift in the uapi header instead of _BITUL()
- V4L2_SUBDEV_ROUTE_FL_SOURCE is now bit 1, so if you have userspace which uses V4L2_SUBDEV_ROUTE_FL_SOURCE, you need to recompile

media: subdev: add v4l2_subdev_set_routing helper()
- Check for overflow in v4l2_subdev_set_routing()

media: subdev: add stream based configuration
- Fix compilation for !CONFIG_VIDEO_V4L2_SUBDEV_API or !CONFIG_MEDIA_CONTROLLER

media: subdev: use streams in v4l2_subdev_link_validate()
- Modify link validation to use 64bit streams-mask instead of collecting stream IDs into allocated arrays. This simplifies the functions quite a bit.

 Tomi


Jacopo Mondi (2):
  media: Documentation: Add GS_ROUTING documentation
  media: subdev: Add for_each_active_route() macro

Laurent Pinchart (5):
  media: subdev: Add [GS]_ROUTING subdev ioctls and operations
  media: subdev: add v4l2_subdev_routing_validate() helper
  media: v4l2-subdev: Add v4l2_subdev_state_xlate_streams() helper
  media: v4l2-subdev: Add subdev .(enable|disable)_streams() operations
  media: v4l2-subdev: Add v4l2_subdev_s_stream_helper() function

Sakari Ailus (1):
  media: Add stream to frame descriptor

Tomi Valkeinen (11):
  media: v4l2-subdev: Sort includes
  media: add V4L2_SUBDEV_FL_STREAMS
  media: add V4L2_SUBDEV_CAP_STREAMS
  media: subdev: add v4l2_subdev_has_pad_interdep()
  media: subdev: add v4l2_subdev_set_routing helper()
  media: Documentation: add multiplexed streams documentation
  media: subdev: add stream based configuration
  media: subdev: use streams in v4l2_subdev_link_validate()
  media: subdev: add "opposite" stream helper funcs
  media: subdev: add streams to v4l2_subdev_get_fmt() helper function
  media: subdev: add v4l2_subdev_set_routing_with_fmt() helper

 .clang-format                                 |   1 +
 .../driver-api/media/v4l2-subdev.rst          |   8 +
 .../userspace-api/media/v4l/dev-subdev.rst    | 175 ++++
 .../userspace-api/media/v4l/user-func.rst     |   1 +
 .../v4l/vidioc-subdev-enum-frame-interval.rst |   5 +-
 .../v4l/vidioc-subdev-enum-frame-size.rst     |   5 +-
 .../v4l/vidioc-subdev-enum-mbus-code.rst      |   5 +-
 .../media/v4l/vidioc-subdev-g-crop.rst        |   5 +-
 .../media/v4l/vidioc-subdev-g-fmt.rst         |   5 +-
 .../v4l/vidioc-subdev-g-frame-interval.rst    |   5 +-
 .../media/v4l/vidioc-subdev-g-routing.rst     | 155 +++
 .../media/v4l/vidioc-subdev-g-selection.rst   |   5 +-
 drivers/media/v4l2-core/v4l2-ioctl.c          |  25 +-
 drivers/media/v4l2-core/v4l2-subdev.c         | 991 +++++++++++++++++-
 include/media/v4l2-subdev.h                   | 377 +++++++
 include/uapi/linux/v4l2-subdev.h              |  83 +-
 16 files changed, 1801 insertions(+), 50 deletions(-)
 create mode 100644 Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst