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[RFC 00/13] Support for dmabuf exporting for videobuf2

Hello everyone,
The patches adds support for DMABUF [1] exporting to V4L2 stack.  It was
updated from [7] after Laurent Pinchart's review.  The previous patchset was
split into two parts.  The support for DMABUF importing was posted in [2]. The
exporter part is dependant on DMA mapping redesign [3] which is not merged into
the mainline. Therefore it is posted as a separate patchset.

This patchset is rebased on 3.4-rc1 plus the following patchsets:

- support for DMABUF importing in V4L2 [2]
- DMA mapping redesign [3]
- support for dma_get_pages extension [4]
- support for vmap extension to dmabuf framework by Dave Airlie [5][6] 

[1] https://lkml.org/lkml/2011/12/26/29
[2] http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/46586
[3] http://thread.gmane.org/gmane.linux.kernel.cross-arch/12819
[4] http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/43793/focus=43803
[5] http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/46713
[6] http://cgit.freedesktop.org/~airlied/linux/commit/?h=drm-dmabuf2&id=c481a5451744fe3c4c950a446be10d3212d633d8
[7] http://thread.gmane.org/gmane.comp.video.dri.devel/66213

Marek Szyprowski (1):
  v4l: vb2-dma-contig: let mmap method to use dma_mmap_coherent call

Tomasz Stanislawski (12):
  v4l: add buffer exporting via dmabuf
  v4l: vb2: add buffer exporting via dmabuf
  v4l: vb2-dma-contig: add setup of sglist for MMAP buffers
  v4l: vb2-dma-contig: add support for DMABUF exporting
  v4l: vb2-dma-contig: add vmap/kmap for dmabuf exporting
  v4l: vb2-dma-contig: change map/unmap behaviour for importers
  v4l: vb2-dma-contig: change map/unmap behaviour for exporters
  v4l: s5p-tv: mixer: support for dmabuf importing
  v4l: s5p-tv: mixer: support for dmabuf exporting
  v4l: fimc: support for dmabuf importing
  v4l: fimc: support for dmabuf exporting
  v4l: vivi: support for dmabuf exporting

 drivers/media/video/Kconfig                 |    1 +
 drivers/media/video/s5p-fimc/fimc-capture.c |   11 ++-
 drivers/media/video/s5p-tv/Kconfig          |    1 +
 drivers/media/video/s5p-tv/mixer_video.c    |   12 ++-
 drivers/media/video/v4l2-compat-ioctl32.c   |    1 +
 drivers/media/video/v4l2-ioctl.c            |    7 +
 drivers/media/video/videobuf2-core.c        |   66 ++++++++
 drivers/media/video/videobuf2-dma-contig.c  |  224 +++++++++++++++++++++++++-
 drivers/media/video/vivi.c                  |    9 +
 include/linux/videodev2.h                   |   23 +++
 include/media/v4l2-ioctl.h                  |    2 +
 include/media/videobuf2-core.h              |    2 +
 12 files changed, 348 insertions(+), 11 deletions(-)


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