From patchwork Tue Jun 18 10:02:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 13702063 Received: from aposti.net (aposti.net [89.234.176.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9AF87155CB9; Tue, 18 Jun 2024 10:03:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=89.234.176.197 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718704993; cv=none; b=bJ+skRC/apLO4/UBdlQ4iQtlJ2E3Lc63lZ+qAEQ83z25bLx2P6youd+KA/Ry7Z+gWq42HZOyjhhwE8tCzB0omIozaWdLwCPD3i+4oPOOQ8cr+/OXKvtDrrVDcubVwoxMgZXlUFUb0uZuZEu9DhMJf78sq7hXNJdg8fR/5MdWtcw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718704993; c=relaxed/simple; bh=386FCeqt+cn7DvWw7dkFBzGG8Ln9RJz10ej5VMspYfw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=mN7IhOPqDKiOzVedrrOClSZhPwRe7A8XGUsqHlt12H+kk5gIzl9jXyOWQekyJC4gkTKQbp/SM6fib0gDvwYvrQo6EfCBeHQbDr6ZtSOLTovnxwdJarrj2ZPuuYbHxYDcjdRC4eb+MGnYhtsUi+994VDeKeZMd8y2YvgTMX43u1U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=crapouillou.net; spf=pass smtp.mailfrom=crapouillou.net; dkim=pass (1024-bit key) header.d=crapouillou.net header.i=@crapouillou.net header.b=AlD+nGDp; arc=none smtp.client-ip=89.234.176.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=crapouillou.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=crapouillou.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=crapouillou.net header.i=@crapouillou.net header.b="AlD+nGDp" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1718704989; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=NxqtKVmPuUzwzAnL9yG1og2+bE3kuPHhJ1Yqq2XKxc0=; b=AlD+nGDpK6gCIMbHauLWNfqyJinEDblVKdWZGHz8xE48iFVFAme6uVJkQxDFPoZt+uEFes /Rc3cYsphNB5UaWeiWtzJDipNZxbF8aDK7Rh46l3rVOyiHVVMQSgTLZITWCQUM9hQNvgAB 9RsRg4uhiVPvSW2xh8ZZGUqFGS4FvjI= From: Paul Cercueil To: Jonathan Cameron , Lars-Peter Clausen , Vinod Koul , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= Cc: Jonathan Corbet , Nuno Sa , linux-iio@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Paul Cercueil Subject: [PATCH v11 0/7] iio: new DMABUF based API v11 Date: Tue, 18 Jun 2024 12:02:55 +0200 Message-ID: <20240618100302.72886-1-paul@crapouillou.net> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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