This is a quickly-put together revision that includes and uses Hans' work to use v4l2_ctrl_handler as the request state holder for V4L2 devices. Although minor fixes have also been applied, there are still a few comments from the previous revision that are left unaddressed. I wanted to give Hans something to play with before he forgets what he had in mind for controls. ;) Changelog since v1: * Integrate Hans control framework patches so S_EXT_CTRLS and G_EXT_CTRLS now work with requests * Only allow one buffer at a time for a given request in the buffer queue * Applied comments related to documentation and document control ioctls * Minor small fixes I have also updated the very basic program that demonstrates the use of the request API on vim2m: https://gist.github.com/Gnurou/dbc3776ed97ea7d4ce6041ea15eb0438 It does not do much, but gives a practical idea of how requests should be used. Alexandre Courbot (9): media: add request API core and UAPI media: videobuf2: add support for requests media: vb2: add support for requests in QBUF ioctl v4l2: add request API support videodev2.h: add request_fd field to v4l2_ext_controls v4l2-ctrls: support requests in EXT_CTRLS ioctls v4l2: document the request API interface media: vim2m: add media device media: vim2m: add request support Hans Verkuil (7): videodev2.h: Add request_fd field to v4l2_buffer v4l2-ctrls: v4l2_ctrl_add_handler: add from_other_dev v4l2-ctrls: prepare internal structs for request API v4l2-ctrls: add core request API v4l2-ctrls: use ref in helper instead of ctrl v4l2-ctrls: support g/s_ext_ctrls for requests v4l2-ctrls: add v4l2_ctrl_request_setup Laurent Pinchart (1): media: Document the media request API Documentation/media/uapi/mediactl/media-funcs.rst | 1 + .../media/uapi/mediactl/media-ioc-request-cmd.rst | 141 ++++++++++ Documentation/media/uapi/v4l/buffer.rst | 10 +- Documentation/media/uapi/v4l/common.rst | 1 + Documentation/media/uapi/v4l/request-api.rst | 236 ++++++++++++++++ .../media/uapi/v4l/vidioc-g-ext-ctrls.rst | 16 +- Documentation/media/uapi/v4l/vidioc-qbuf.rst | 21 ++ drivers/media/Makefile | 3 +- drivers/media/dvb-frontends/rtl2832_sdr.c | 5 +- drivers/media/media-device.c | 7 + drivers/media/media-request-mgr.c | 105 +++++++ drivers/media/media-request.c | 311 +++++++++++++++++++++ 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/rcar-vin/rcar-v4l2.c | 3 +- drivers/media/platform/rcar_drif.c | 2 +- drivers/media/platform/soc_camera/soc_camera.c | 3 +- drivers/media/platform/vim2m.c | 79 ++++++ drivers/media/platform/vivid/vivid-ctrls.c | 42 +-- 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/v4l2-core/Makefile | 2 +- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 7 +- drivers/media/v4l2-core/v4l2-ctrls.c | 238 ++++++++++++++-- drivers/media/v4l2-core/v4l2-device.c | 3 +- drivers/media/v4l2-core/v4l2-ioctl.c | 125 ++++++++- drivers/media/v4l2-core/v4l2-request.c | 54 ++++ drivers/media/v4l2-core/videobuf2-core.c | 133 ++++++++- drivers/media/v4l2-core/videobuf2-v4l2.c | 31 +- drivers/staging/media/imx/imx-media-dev.c | 2 +- drivers/staging/media/imx/imx-media-fim.c | 2 +- include/media/media-device.h | 3 + include/media/media-entity.h | 9 + include/media/media-request-mgr.h | 73 +++++ include/media/media-request.h | 186 ++++++++++++ include/media/v4l2-ctrls.h | 17 +- include/media/v4l2-request.h | 34 +++ include/media/videobuf2-core.h | 15 +- include/media/videobuf2-v4l2.h | 2 + include/uapi/linux/media.h | 10 + include/uapi/linux/videodev2.h | 6 +- 49 files changed, 1881 insertions(+), 85 deletions(-) create mode 100644 Documentation/media/uapi/mediactl/media-ioc-request-cmd.rst create mode 100644 Documentation/media/uapi/v4l/request-api.rst create mode 100644 drivers/media/media-request-mgr.c create mode 100644 drivers/media/media-request.c create mode 100644 drivers/media/v4l2-core/v4l2-request.c create mode 100644 include/media/media-request-mgr.h create mode 100644 include/media/media-request.h create mode 100644 include/media/v4l2-request.h -- 2.16.0.rc1.238.g530d649a79-goog
