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[v16,0/4] Add NVIDIA Tegra GPC-DMA driver

Message ID 1641830718-23650-1-git-send-email-akhilrajeev@nvidia.com (mailing list archive)
Headers show
Series Add NVIDIA Tegra GPC-DMA driver | expand

Message

Akhil R Jan. 10, 2022, 4:05 p.m. UTC 
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@nvidia.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