• Linus Torvalds's avatar
    Merge tag 'media/v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media · b3491d84
    Linus Torvalds authored
    Pull new experimental media request API from Mauro Carvalho Chehab:
     "A new media request API
      This API is needed to support device drivers that can dynamically
      change their parameters for each new frame. The latest versions of
      Google camera and codec HAL depends on such feature.
      At this stage, it supports only stateless codecs.
      It has been discussed for a long time (at least over the last 3-4
      years), and we finally reached to something that seem to work.
      This series contain both the API and core changes required to support
      it and a new m2m decoder driver (cedrus).
      As the current API is still experimental, the only real driver using
      it (cedrus) was added at staging[1]. We intend to keep it there for a
      while, in order to test the API. Only when we're sure that this API
      works for other cases (like encoders), we'll move this driver out of
      staging and set the API into a stone.
      [1] We added support for the vivid virtual driver (used only for
      testing) to it too, as it makes easier to test the API for the ones
      that don't have the cedrus hardware"
    * tag 'media/v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (53 commits)
      media: dt-bindings: Document the Rockchip VPU bindings
      media: platform: Add Cedrus VPU decoder driver
      media: dt-bindings: media: Document bindings for the Cedrus VPU driver
      media: v4l: Add definition for the Sunxi tiled NV12 format
      media: v4l: Add definitions for MPEG-2 slice format and metadata
      media: videobuf2-core: Rework and rename helper for request buffer count
      media: v4l2-ctrls.c: initialize an error return code with zero
      media: v4l2-compat-ioctl32.c: add missing documentation for a field
      media: media-request: update documentation
      media: media-request: EPERM -> EACCES/EBUSY
      media: v4l2-ctrls: improve media_request_(un)lock_for_update
      media: v4l2-ctrls: use media_request_(un)lock_for_access
      media: media-request: add media_request_(un)lock_for_access
      media: vb2: set reqbufs/create_bufs capabilities
      media: videodev2.h: add new capabilities for buffer types
      media: buffer.rst: only set V4L2_BUF_FLAG_REQUEST_FD for QBUF
      media: v4l2-ctrls: return -EACCES if request wasn't completed
      media: media-request: return -EINVAL for invalid request_fds
      media: vivid: add request support
      media: vivid: add mc
videodev2.h.rst.exceptions 23.9 KB