[GIT PULL FOR v4.20] Add Request API for the topic branch

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Hi Mauro,

This is a pull request to add the Request API v18 as a topic branch.

Note that this does not yet include the follow-up patches:

https://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg134630.html

Those will come in a separate pull request on top of this one once this is
agreed upon (hopefully soon!).

Regards,

	Hans

The following changes since commit 3799eca51c5be3cd76047a582ac52087373b54b3:

  media: camss: add missing includes (2018-08-29 14:02:06 -0400)

are available in the Git repository at:

  git://linuxtv.org/hverkuil/media_tree.git reqv18

for you to fetch changes up to 1212ceb69544eee3864ec8461bc53ee6ddd87fb0:

  vivid: add request support (2018-08-30 12:01:28 +0200)

----------------------------------------------------------------
Alexandre Courbot (2):
      Documentation: v4l: document request API
      videodev2.h: add request_fd field to v4l2_ext_controls

Hans Verkuil (32):
      uapi/linux/media.h: add request API
      media-request: implement media requests
      media-request: add media_request_get_by_fd
      media-request: add media_request_object_find
      v4l2-device.h: add v4l2_device_supports_requests() helper
      v4l2-dev: lock req_queue_mutex
      v4l2-ctrls: v4l2_ctrl_add_handler: add from_other_dev
      v4l2-ctrls: prepare internal structs for request API
      v4l2-ctrls: alloc memory for p_req
      v4l2-ctrls: use ref in helper instead of ctrl
      v4l2-ctrls: add core request support
      v4l2-ctrls: support g/s_ext_ctrls for requests
      v4l2-ctrls: add v4l2_ctrl_request_hdl_find/put/ctrl_find functions
      videobuf2-v4l2: move __fill_v4l2_buffer() function
      videobuf2-v4l2: replace if by switch in __fill_vb2_buffer()
      vb2: store userspace data in vb2_v4l2_buffer
      davinci_vpfe: remove bogus vb2->state check
      vb2: drop VB2_BUF_STATE_PREPARED, use bool prepared/synced instead
      videodev2.h: Add request_fd field to v4l2_buffer
      vb2: add init_buffer buffer op
      videobuf2-core: embed media_request_object
      videobuf2-core: integrate with media requests
      videobuf2-v4l2: integrate with media requests
      videobuf2-core: add request helper functions
      videobuf2-v4l2: add vb2_request_queue/validate helpers
      videobuf2-core: add uses_requests/qbuf flags
      videobuf2-v4l2: refuse qbuf if queue uses requests or vv.
      v4l2-mem2mem: add vb2_m2m_request_queue
      vim2m: use workqueue
      vim2m: support requests
      vivid: add mc
      vivid: add request support

Sakari Ailus (1):
      media: doc: Add media-request.h header to documentation build

 Documentation/media/kapi/mc-core.rst                           |   2 +
 Documentation/media/uapi/mediactl/media-controller.rst         |   1 +
 Documentation/media/uapi/mediactl/media-funcs.rst              |   6 +
 Documentation/media/uapi/mediactl/media-ioc-request-alloc.rst  |  65 +++++
 Documentation/media/uapi/mediactl/media-request-ioc-queue.rst  |  82 ++++++
 Documentation/media/uapi/mediactl/media-request-ioc-reinit.rst |  51 ++++
 Documentation/media/uapi/mediactl/request-api.rst              | 245 ++++++++++++++++++
 Documentation/media/uapi/mediactl/request-func-close.rst       |  48 ++++
 Documentation/media/uapi/mediactl/request-func-ioctl.rst       |  67 +++++
 Documentation/media/uapi/mediactl/request-func-poll.rst        |  77 ++++++
 Documentation/media/uapi/v4l/buffer.rst                        |  21 +-
 Documentation/media/uapi/v4l/vidioc-g-ext-ctrls.rst            |  53 +++-
 Documentation/media/uapi/v4l/vidioc-qbuf.rst                   |  32 ++-
 Documentation/media/videodev2.h.rst.exceptions                 |   1 +
 drivers/media/Makefile                                         |   3 +-
 drivers/media/common/videobuf2/videobuf2-core.c                | 262 +++++++++++++++----
 drivers/media/common/videobuf2/videobuf2-v4l2.c                | 508 +++++++++++++++++++++++++------------
 drivers/media/dvb-core/dvb_vb2.c                               |   5 +-
 drivers/media/dvb-frontends/rtl2832_sdr.c                      |   5 +-
 drivers/media/media-device.c                                   |  24 +-
 drivers/media/media-request.c                                  | 489 ++++++++++++++++++++++++++++++++++++
 drivers/media/pci/bt8xx/bttv-driver.c                          |   2 +-
 drivers/media/pci/cx23885/cx23885-417.c                        |   2 +-
 drivers/media/pci/cx88/cx88-blackbird.c                        |   2 +-
 drivers/media/pci/cx88/cx88-video.c                            |   2 +-
 drivers/media/pci/saa7134/saa7134-empress.c                    |   4 +-
 drivers/media/pci/saa7134/saa7134-video.c                      |   2 +-
 drivers/media/platform/exynos4-is/fimc-capture.c               |   2 +-
 drivers/media/platform/omap3isp/ispvideo.c                     |   4 +-
 drivers/media/platform/rcar-vin/rcar-core.c                    |   2 +-
 drivers/media/platform/rcar_drif.c                             |   2 +-
 drivers/media/platform/s3c-camif/camif-capture.c               |   4 +-
 drivers/media/platform/s5p-mfc/s5p_mfc_dec.c                   |   4 +-
 drivers/media/platform/s5p-mfc/s5p_mfc_enc.c                   |   4 +-
 drivers/media/platform/soc_camera/soc_camera.c                 |   7 +-
 drivers/media/platform/vim2m.c                                 |  49 ++--
 drivers/media/platform/vivid/vivid-core.c                      |  69 +++++
 drivers/media/platform/vivid/vivid-core.h                      |   8 +
 drivers/media/platform/vivid/vivid-ctrls.c                     |  46 ++--
 drivers/media/platform/vivid/vivid-kthread-cap.c               |  12 +
 drivers/media/platform/vivid/vivid-kthread-out.c               |  12 +
 drivers/media/platform/vivid/vivid-sdr-cap.c                   |  16 ++
 drivers/media/platform/vivid/vivid-vbi-cap.c                   |  10 +
 drivers/media/platform/vivid/vivid-vbi-out.c                   |  10 +
 drivers/media/platform/vivid/vivid-vid-cap.c                   |  10 +
 drivers/media/platform/vivid/vivid-vid-out.c                   |  10 +
 drivers/media/usb/cpia2/cpia2_v4l.c                            |   2 +-
 drivers/media/usb/cx231xx/cx231xx-417.c                        |   2 +-
 drivers/media/usb/cx231xx/cx231xx-video.c                      |   4 +-
 drivers/media/usb/msi2500/msi2500.c                            |   2 +-
 drivers/media/usb/tm6000/tm6000-video.c                        |   2 +-
 drivers/media/usb/uvc/uvc_queue.c                              |   5 +-
 drivers/media/usb/uvc/uvc_v4l2.c                               |   3 +-
 drivers/media/usb/uvc/uvcvideo.h                               |   1 +
 drivers/media/v4l2-core/v4l2-compat-ioctl32.c                  |  14 +-
 drivers/media/v4l2-core/v4l2-ctrls.c                           | 541 ++++++++++++++++++++++++++++++++++++++--
 drivers/media/v4l2-core/v4l2-dev.c                             |  18 +-
 drivers/media/v4l2-core/v4l2-device.c                          |   3 +-
 drivers/media/v4l2-core/v4l2-ioctl.c                           |  44 +++-
 drivers/media/v4l2-core/v4l2-mem2mem.c                         |  67 ++++-
 drivers/media/v4l2-core/v4l2-subdev.c                          |   9 +-
 drivers/staging/media/davinci_vpfe/vpfe_video.c                |   7 +-
 drivers/staging/media/imx/imx-media-dev.c                      |   2 +-
 drivers/staging/media/imx/imx-media-fim.c                      |   2 +-
 drivers/staging/media/omap4iss/iss_video.c                     |   3 +-
 drivers/usb/gadget/function/uvc_queue.c                        |   2 +-
 include/media/media-device.h                                   |  29 +++
 include/media/media-request.h                                  | 386 ++++++++++++++++++++++++++++
 include/media/v4l2-ctrls.h                                     | 123 ++++++++-
 include/media/v4l2-device.h                                    |  11 +
 include/media/v4l2-mem2mem.h                                   |   4 +
 include/media/videobuf2-core.h                                 |  62 ++++-
 include/media/videobuf2-v4l2.h                                 |  20 +-
 include/uapi/linux/media.h                                     |   8 +
 include/uapi/linux/videodev2.h                                 |  14 +-
 75 files changed, 3369 insertions(+), 363 deletions(-)
 create mode 100644 Documentation/media/uapi/mediactl/media-ioc-request-alloc.rst
 create mode 100644 Documentation/media/uapi/mediactl/media-request-ioc-queue.rst
 create mode 100644 Documentation/media/uapi/mediactl/media-request-ioc-reinit.rst
 create mode 100644 Documentation/media/uapi/mediactl/request-api.rst
 create mode 100644 Documentation/media/uapi/mediactl/request-func-close.rst
 create mode 100644 Documentation/media/uapi/mediactl/request-func-ioctl.rst
 create mode 100644 Documentation/media/uapi/mediactl/request-func-poll.rst
 create mode 100644 drivers/media/media-request.c
 create mode 100644 include/media/media-request.h



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