[Linaro-mm-sig] [PATCH 00/12] Support for dmabuf exporting for videobuf2

[Sangwook Lee]

Hi Tomasz

On 23 May 2012 14:07, Tomasz Stanislawski <t.stanislaws at samsung.com> wrote:

> Hello everyone,
> The patches adds support for DMABUF exporting to V4L2 stack.  The latest
> support for DMABUF importing was posted in [1]. The exporter part is
> dependant
> on DMA mapping redesign [2] which is not merged into the mainline.
> Therefore it
> is posted as a separate patchset. Moreover some patches depends on vmap
> extension for DMABUF by Dave Airlie [3] and sg_alloc_table_from_pages
> function
> [4].
>

Do you have your own git ?

Thanks
Sangwook


> Changelog:
> v0: (RFC)
> - updated setup of VIDIOC_EXPBUF ioctl
> - doc updates
> - introduced workaround to avoid using dma_get_pages,
> - removed caching of exported dmabuf to avoid existence of circular
> reference
>  between dmabuf and vb2_dc_buf or resource leakage
> - removed all 'change behaviour' patches
> - inital support for exporting in s5p-mfs driver
> - removal of vb2_mmap_pfn_range that is no longer used
> - use sg_alloc_table_from_pages instead of creating sglist in vb2_dc code
> - move attachment allocation to exporter's attach callback
>
> [1]
> http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/48730
> [2] http://thread.gmane.org/gmane.linux.kernel.cross-arch/14098
> [3] http://permalink.gmane.org/gmane.comp.video.dri.devel/69302
> [4] This patchset is rebased on 3.4-rc1 plus the following patchsets:
>
> Marek Szyprowski (1):
>  v4l: vb2-dma-contig: let mmap method to use dma_mmap_coherent call
>
> Tomasz Stanislawski (11):
>  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: s5p-fimc: support for dmabuf exporting
>  v4l: s5p-tv: mixer: support for dmabuf exporting
>  v4l: s5p-mfc: support for dmabuf exporting
>  v4l: vb2: remove vb2_mmap_pfn_range function
>  v4l: vb2-dma-contig: use sg_alloc_table_from_pages function
>  v4l: vb2-dma-contig: Move allocation of dbuf attachment to attach cb
>
>  drivers/media/video/s5p-fimc/fimc-capture.c |    9 +
>  drivers/media/video/s5p-mfc/s5p_mfc_dec.c   |   13 ++
>  drivers/media/video/s5p-mfc/s5p_mfc_enc.c   |   13 ++
>  drivers/media/video/s5p-tv/mixer_video.c    |   10 +
>  drivers/media/video/v4l2-compat-ioctl32.c   |    1 +
>  drivers/media/video/v4l2-dev.c              |    1 +
>  drivers/media/video/v4l2-ioctl.c            |    6 +
>  drivers/media/video/videobuf2-core.c        |   67 ++++++
>  drivers/media/video/videobuf2-dma-contig.c  |  323
> ++++++++++++++++++++++-----
>  drivers/media/video/videobuf2-memops.c      |   40 ----
>  include/linux/videodev2.h                   |   26 +++
>  include/media/v4l2-ioctl.h                  |    2 +
>  include/media/videobuf2-core.h              |    2 +
>  include/media/videobuf2-memops.h            |    5 -
>  14 files changed, 411 insertions(+), 107 deletions(-)
>
> --
> 1.7.9.5
>
>
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