[v11,0/7] iio: new DMABUF based API v11

Message

Paul Cercueil June 18, 2024, 10:02 a.m. UTC

Hi Jonathan,

Here's the v11 of my patchset that introduces DMABUF support to IIO.

It addresses the few points that were raised in the review of the v10.
It also adds Nuno as a co-developer.

Changelog:
- [3/7]:
    - Document .lock_queue / .unlock_queue buffer callbacks
    - Add small comment to explain what the spinlock protects
    - Use guard(mutex)

- [4/7]:
    - Remove useless field "attach" in struct iio_dma_buffer_block
    - Document "sg_table" and "fence" fields in struct iio_block_state

- [6/7]:
    - "a IIO buffer" -> "an IIO buffer"
    - Add variable name in IOCTL calls

- [7/7]: New patch, to document the DMA changes

Cheers,
-Paul

Paul Cercueil (7):
  dmaengine: Add API function dmaengine_prep_peripheral_dma_vec()
  dmaengine: dma-axi-dmac: Implement device_prep_peripheral_dma_vec
  iio: core: Add new DMABUF interface infrastructure
  iio: buffer-dma: Enable support for DMABUFs
  iio: buffer-dmaengine: Support new DMABUF based userspace API
  Documentation: iio: Document high-speed DMABUF based API
  Documentation: dmaengine: Document new dma_vec API

 Documentation/driver-api/dmaengine/client.rst |   9 +
 .../driver-api/dmaengine/provider.rst         |  10 +
 Documentation/iio/iio_dmabuf_api.rst          |  54 +++
 Documentation/iio/index.rst                   |   1 +
 drivers/dma/dma-axi-dmac.c                    |  40 ++
 drivers/iio/Kconfig                           |   1 +
 drivers/iio/buffer/industrialio-buffer-dma.c  | 178 ++++++-
 .../buffer/industrialio-buffer-dmaengine.c    |  62 ++-
 drivers/iio/industrialio-buffer.c             | 457 ++++++++++++++++++
 include/linux/dmaengine.h                     |  33 ++
 include/linux/iio/buffer-dma.h                |  31 ++
 include/linux/iio/buffer_impl.h               |  33 ++
 include/uapi/linux/iio/buffer.h               |  22 +
 13 files changed, 911 insertions(+), 20 deletions(-)
 create mode 100644 Documentation/iio/iio_dmabuf_api.rst