Hello, RFC The series adds support for new noncontiguous DMA API [0] and adds V4L2_FLAG_MEMORY_NON_COHERENT UAPI. This is similar to previous V4L2_FLAG_MEMORY_NON_CONSISTENT (which was renamed), but the patch set goes a bit further this time and also does some videobuf2 API refactroings along the way. A corresponding v4l2-compliance patch will be posted shortly. [0] https://lore.kernel.org/lkml/20210301085236.947011-2-hch@xxxxxx/ Sergey Senozhatsky (8): videobuf2: rework vb2_mem_ops API videobuf2: inverse buffer cache_hints flags videobuf2: split buffer cache_hints initialisation videobuf2: move cache_hints handling to allocators videobuf2: add V4L2_FLAG_MEMORY_NON_COHERENT flag videobuf2: add queue memory coherency parameter videobuf2: handle V4L2_FLAG_MEMORY_NON_COHERENT flag videobuf2: handle non-contiguous DMA allocations .../userspace-api/media/v4l/buffer.rst | 40 +++- .../media/v4l/vidioc-create-bufs.rst | 7 +- .../media/v4l/vidioc-reqbufs.rst | 16 +- .../media/common/videobuf2/videobuf2-core.c | 135 +++++++++----- .../common/videobuf2/videobuf2-dma-contig.c | 175 ++++++++++++++---- .../media/common/videobuf2/videobuf2-dma-sg.c | 39 ++-- .../media/common/videobuf2/videobuf2-v4l2.c | 47 ++--- .../common/videobuf2/videobuf2-vmalloc.c | 30 +-- drivers/media/dvb-core/dvb_vb2.c | 2 +- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 +- drivers/media/v4l2-core/v4l2-ioctl.c | 5 +- include/media/videobuf2-core.h | 57 +++--- include/uapi/linux/videodev2.h | 13 +- 13 files changed, 396 insertions(+), 179 deletions(-) -- 2.30.1.766.gb4fecdf3b7-goog
