v4l: routing and streams support

Hi,

This is v14 of the streams series. The v13 can be found from:

https://lore.kernel.org/all/20220810121122.3149086-1-tomi...

My work branch with additional drivers can be found from:

git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux.git streams/work-v14

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....

Changes in v14:

- Rebased on top of v6.0-rc3
- Include minmax.h instead of kernel.h for min()
- Simplify new_pipe handling in media_pipeline_alloc_start()
- Add missing kdocs
- Fix doc references to media entities where media pad should now be
  used.
- Change media_entity_pipeline() to return the first pipeline found in
  the entity's pads (instead of returning the pipe from the first pad).
- Mark media_entity_pipeline() as deprecated. It is only used in two
  drivers after this series.

 Tomi

Jacopo Mondi (3):
  media: mc: entity: Add iterator helper for entity pads
  media: Documentation: Add GS_ROUTING documentation
  media: subdev: Add for_each_active_route() macro

Laurent Pinchart (9):
  media: mc: entity: Merge media_entity_enum_init and
    __media_entity_enum_init
  media: mc: entity: Move media_entity_get_fwnode_pad() out of graph
    walk section
  media: mc: entity: Add media_entity_pipeline() to access the media
    pipeline
  media: mc: entity: Rewrite media_pipeline_start()
  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 (21):
  media: Documentation: mc: add definitions for stream and pipeline
  media: media-entity.h: add include for min()
  media: subdev: increase V4L2_FRAME_DESC_ENTRY_MAX to 8
  media: mc: entity: Rename streaming_count -> start_count
  media: v4l2-dev: Add videodev wrappers for media pipelines
  media: drivers: use video device pipeline start/stop
  media: drivers: use video_device_pipeline()
  media: mc: entity: add alloc variant of pipeline_start
  media: drivers: use video_device_pipeline_alloc_start()
  media: mc: entity: Add has_pad_interdep entity operation
  media: mc: convert pipeline funcs to take media_pad
  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 +
 Documentation/driver-api/media/mc-core.rst    |   19 +-
 .../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     |  150 +++
 .../media/v4l/vidioc-subdev-g-selection.rst   |    5 +-
 drivers/media/mc/mc-device.c                  |   13 +-
 drivers/media/mc/mc-entity.c                  |  648 ++++++++--
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c |    6 +-
 .../media/platform/qcom/camss/camss-video.c   |    6 +-
 .../platform/renesas/rcar-vin/rcar-core.c     |    5 +-
 .../platform/renesas/rcar-vin/rcar-dma.c      |   18 +-
 .../media/platform/renesas/vsp1/vsp1_video.c  |    6 +-
 .../platform/rockchip/rkisp1/rkisp1-capture.c |   14 +-
 .../samsung/exynos4-is/fimc-capture.c         |    9 +-
 .../samsung/exynos4-is/fimc-isp-video.c       |    9 +-
 .../platform/samsung/exynos4-is/fimc-lite.c   |    9 +-
 .../samsung/s3c-camif/camif-capture.c         |    6 +-
 drivers/media/platform/st/stm32/stm32-dcmi.c  |    6 +-
 .../platform/sunxi/sun4i-csi/sun4i_dma.c      |    6 +-
 .../platform/sunxi/sun6i-csi/sun6i_video.c    |    6 +-
 drivers/media/platform/ti/cal/cal-video.c     |    6 +-
 drivers/media/platform/ti/cal/cal.h           |    1 -
 drivers/media/platform/ti/omap3isp/isp.c      |    4 +-
 drivers/media/platform/ti/omap3isp/ispvideo.c |    9 +-
 drivers/media/platform/ti/omap3isp/ispvideo.h |   11 +-
 drivers/media/platform/xilinx/xilinx-dma.c    |   11 +-
 drivers/media/platform/xilinx/xilinx-dma.h    |    9 +-
 .../media/test-drivers/vimc/vimc-capture.c    |    7 +-
 drivers/media/usb/au0828/au0828-core.c        |    8 +-
 drivers/media/v4l2-core/v4l2-dev.c            |   72 ++
 drivers/media/v4l2-core/v4l2-ioctl.c          |   25 +-
 drivers/media/v4l2-core/v4l2-subdev.c         | 1038 ++++++++++++++++-
 drivers/staging/media/imx/imx-media-utils.c   |    8 +-
 drivers/staging/media/imx/imx7-media-csi.c    |    6 +-
 drivers/staging/media/ipu3/ipu3-v4l2.c        |    6 +-
 drivers/staging/media/omap4iss/iss.c          |    4 +-
 drivers/staging/media/omap4iss/iss_video.c    |    9 +-
 drivers/staging/media/omap4iss/iss_video.h    |   11 +-
 drivers/staging/media/tegra-video/tegra210.c  |    6 +-
 include/media/media-device.h                  |   15 -
 include/media/media-entity.h                  |  169 ++-
 include/media/v4l2-dev.h                      |  102 ++
 include/media/v4l2-subdev.h                   |  382 +++++-
 include/uapi/linux/v4l2-subdev.h              |   83 +-
 52 files changed, 2825 insertions(+), 333 deletions(-)
 create mode 100644 Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst

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2.34.1