[RFC PATCH 0/2] dma: DMA slave device bringup tool

[Alexander Gordeev <a.gordeev.box@gmail.com>]

Hi All,

This is a custom tool that can be used to bring up DMA slave devices.
It consists of a user-level utility and a companion device driver that
communicate via IOCTL.

The tool is likely need some polishing, but I would like first get some
feedback to ensure there is interest.

I also tested it only on x86 and have little idea on how channel names
on other architectures look like. That could especially impact the way
dma_request_channel() treats user-provided target DMA channel names, as
exposed via /sys/class/dma.

Thanks!

Alexander Gordeev (2):
  dmaengine/dma-slave: DMA slave device xfer passthrough driver
  tools/dma-slave: DMA slave device transfer utility

 drivers/dma/Kconfig            |   7 +
 drivers/dma/Makefile           |   1 +
 drivers/dma/dma-slave.c        | 246 +++++++++++++++++++++++++
 include/uapi/linux/dma-slave.h |  30 +++
 tools/Makefile                 |  11 +-
 tools/dma/Makefile             |  20 ++
 tools/dma/dma-slave.c          | 321 +++++++++++++++++++++++++++++++++
 7 files changed, 631 insertions(+), 5 deletions(-)
 create mode 100644 drivers/dma/dma-slave.c
 create mode 100644 include/uapi/linux/dma-slave.h
 create mode 100644 tools/dma/Makefile
 create mode 100644 tools/dma/dma-slave.c

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2.51.0