linux-kernel - [PATCH v16 0/4] Add NVIDIA Tegra GPC-DMA driver

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Message-ID: <1641830718-23650-1-git-send-email-akhilrajeev@nvidia.com>
Date:   Mon, 10 Jan 2022 21:35:14 +0530
From:   Akhil R <akhilrajeev@...dia.com>
To:     <dan.j.williams@...el.com>, <devicetree@...r.kernel.org>,
        <dmaengine@...r.kernel.org>, <jonathanh@...dia.com>,
        <kyarlagadda@...dia.com>, <ldewangan@...dia.com>,
        <linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <p.zabel@...gutronix.de>, <rgumasta@...dia.com>,
        <robh+dt@...nel.org>, <thierry.reding@...il.com>,
        <vkoul@...nel.org>
CC:     <akhilrajeev@...dia.com>
Subject: [PATCH v16 0/4] Add NVIDIA Tegra GPC-DMA driver

Add support for NVIDIA Tegra general purpose DMA driver for
Tegra186 and Tegra194 platform.

v15 -> v16:
  * Added cyclic mode support
  * Added device pause and resume
  * Added sg_req array to handle multiple sgs
  * Request irq only when a dma chan is allocated
  * Removed locks and busy flag
  * Updates in terminate_all callback

v15 - https://lkml.org/lkml/2021/12/16/905

The additional changes were added to align with the features that got
added in the interim.
Keeping "Reviewed-by: Jon Hunter <jonathanh@...dia.com>" as the changes
were reviewed internally.

Akhil R (4):
  dt-bindings: dmaengine: Add doc for tegra gpcdma
  dmaengine: tegra: Add tegra gpcdma driver
  arm64: defconfig: tegra: Enable GPCDMA
  arm64: tegra: Add GPCDMA node for tegra186 and tegra194

 .../bindings/dma/nvidia,tegra186-gpc-dma.yaml      |  110 ++
 arch/arm64/boot/dts/nvidia/tegra186.dtsi           |   42 +
 arch/arm64/boot/dts/nvidia/tegra194.dtsi           |   43 +
 arch/arm64/configs/defconfig                       |    1 +
 drivers/dma/Kconfig                                |   11 +
 drivers/dma/Makefile                               |    1 +
 drivers/dma/tegra186-gpc-dma.c                     | 1464 ++++++++++++++++++++
 7 files changed, 1672 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
 create mode 100644 drivers/dma/tegra186-gpc-dma.c

-- 
2.7.4