Hello everyone,
This patchset adds support for DMABUF [2] importing to V4L2 stack.
The support for DMABUF exporting was moved to separate patchset
due to dependency on patches for DMA mapping redesign by
Marek Szyprowski [4]. This patchset depends on new scatterlist
constructor [5].
v7:
- support for V4L2_MEMORY_DMABUF in v4l2-compact-ioctl32.c
- cosmetic fixes to the documentation
- added importing for vmalloc because vmap support in dmabuf for 3.5
was pull-requested
- support for dmabuf importing for VIVI
- resurrect allocation of dma-contig context
- remove reference of alloc_ctx in dma-contig buffer
- use sg_alloc_table_from_pages
- fix DMA scatterlist calls to use orig_nents instead of nents
- fix memleak in vb2_dc_sgt_foreach_page (use orig_nents instead of nents)
v6:
- fixed missing entry in v4l2_memory_names
- fixed a bug occuring after get_user_pages failure
- fixed a bug caused by using invalid vma for get_user_pages
- prepare/finish no longer call dma_sync for dmabuf buffers
v5:
- removed change of importer/exporter behaviour
- fixes vb2_dc_pages_to_sgt basing on Laurent's hints
- changed pin/unpin words to lock/unlock in Doc
v4:
- rebased on mainline 3.4-rc2
- included missing importing support for s5p-fimc and s5p-tv
- added patch for changing map/unmap for importers
- fixes to Documentation part
- coding style fixes
- pairing {map/unmap}_dmabuf in vb2-core
- fixing variable types and semantic of arguments in videobufb2-dma-contig.c
v3:
- rebased on mainline 3.4-rc1
- split 'code refactor' patch to multiple smaller patches
- squashed fixes to Sumit's patches
- patchset is no longer dependant on 'DMA mapping redesign'
- separated path for handling IO and non-IO mappings
- add documentation for DMABUF importing to V4L
- removed all DMABUF exporter related code
- removed usage of dma_get_pages extension
v2:
- extended VIDIOC_EXPBUF argument from integer memoffset to struct
v4l2_exportbuffer
- added patch that breaks DMABUF spec on (un)map_atachment callcacks but allows
to work with existing implementation of DMABUF prime in DRM
- all dma-contig code refactoring patches were squashed
- bugfixes
v1: List of changes since [1].
- support for DMA api extension dma_get_pages, the function is used to retrieve
pages used to create DMA mapping.
- small fixes/code cleanup to videobuf2
- added prepare and finish callbacks to vb2 allocators, it is used keep
consistency between dma-cpu acess to the memory (by Marek Szyprowski)
- support for exporting of DMABUF buffer in V4L2 and Videobuf2, originated from
[3].
- support for dma-buf exporting in vb2-dma-contig allocator
- support for DMABUF for s5p-tv and s5p-fimc (capture interface) drivers,
originated from [3]
- changed handling for userptr buffers (by Marek Szyprowski, Andrzej
Pietrasiewicz)
- let mmap method to use dma_mmap_writecombine call (by Marek Szyprowski)
[1] http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/42966/focus=42968
[2] https://lkml.org/lkml/2011/12/26/29
[3] http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/36354/focus=36355
[4] http://thread.gmane.org/gmane.linux.kernel.cross-arch/12819
[5] http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/47983
Laurent Pinchart (2):
v4l: vb2-dma-contig: Shorten vb2_dma_contig prefix to vb2_dc
v4l: vb2-dma-contig: Reorder functions
Marek Szyprowski (2):
v4l: vb2: add prepare/finish callbacks to allocators
v4l: vb2-dma-contig: add prepare/finish to dma-contig allocator
Sumit Semwal (4):
v4l: Add DMABUF as a memory type
v4l: vb2: add support for shared buffer (dma_buf)
v4l: vb: remove warnings about MEMORY_DMABUF
v4l: vb2-dma-contig: add support for dma_buf importing
Tomasz Stanislawski (7):
Documentation: media: description of DMABUF importing in V4L2
v4l: vb2-dma-contig: remove reference of alloc_ctx from a buffer
v4l: vb2-dma-contig: add support for scatterlist in userptr mode
v4l: vb2-vmalloc: add support for dmabuf importing
v4l: vivi: support for dmabuf importing
v4l: s5p-tv: mixer: support for dmabuf importing
v4l: s5p-fimc: support for dmabuf importing
Documentation/DocBook/media/v4l/compat.xml | 4 +
Documentation/DocBook/media/v4l/io.xml | 179 ++++++++
.../DocBook/media/v4l/vidioc-create-bufs.xml | 3 +-
Documentation/DocBook/media/v4l/vidioc-qbuf.xml | 15 +
Documentation/DocBook/media/v4l/vidioc-reqbufs.xml | 47 +-
drivers/media/video/Kconfig | 1 +
drivers/media/video/s5p-fimc/Kconfig | 1 +
drivers/media/video/s5p-fimc/fimc-capture.c | 2 +-
drivers/media/video/s5p-tv/Kconfig | 1 +
drivers/media/video/s5p-tv/mixer_video.c | 2 +-
drivers/media/video/v4l2-compat-ioctl32.c | 16 +
drivers/media/video/v4l2-ioctl.c | 1 +
drivers/media/video/videobuf-core.c | 4 +
drivers/media/video/videobuf2-core.c | 207 ++++++++-
drivers/media/video/videobuf2-dma-contig.c | 470 +++++++++++++++++---
drivers/media/video/videobuf2-vmalloc.c | 56 +++
drivers/media/video/vivi.c | 2 +-
include/linux/videodev2.h | 7 +
include/media/videobuf2-core.h | 34 ++
19 files changed, 963 insertions(+), 89 deletions(-)
--
1.7.9.5
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