linux-kernel - [PATCH v12 0/7] iio: new DMABUF based API v12

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Date: Thu, 20 Jun 2024 14:27:19 +0200
From: Paul Cercueil <paul@...pouillou.net>
To: Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Vinod Koul <vkoul@...nel.org>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Christian König <christian.koenig@....com>
Cc: Jonathan Corbet <corbet@....net>,
	Nuno Sa <nuno.sa@...log.com>,
	linux-iio@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	dmaengine@...r.kernel.org,
	linux-media@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linaro-mm-sig@...ts.linaro.org,
	Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH v12 0/7] iio: new DMABUF based API v12

Hi Jonathan,

Here's the v12 of my patchset that introduces DMABUF support to IIO.

Apart from a small documentation fix, it reverts to using
mutex_lock/mutex_unlock in one particular place, which used cleanup
GOTOs (which don't play well with scope-managed cleanups).

Changelog:
- [3/7]:
    - Revert to mutex_lock/mutex_unlock in iio_buffer_attach_dmabuf(),
      as it uses cleanup GOTOs
- [6/7]:
    - "obtained using..." -> "which can be obtained using..."

This is based on next-20240619.

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             | 459 ++++++++++++++++++
 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, 913 insertions(+), 20 deletions(-)
 create mode 100644 Documentation/iio/iio_dmabuf_api.rst

-- 
2.43.0