Hello, This patch series adds a new driver for the DPDMA engine found in the Xilinx ZynqMP. The previous version can be found at [1]. All review comments have been taken into account. The most notable changes are - Introduction of a new DMA transfer type that combines interleaved and cyclic tranfers (patch 2/6, suggested by Vinod) - Switch to virt-dma (including a drive-by lockdep addition to virt-dma in patch 3/6) - Removal of all non-interleaved, non-cyclic transfer types, as I have currently no way to test them given how the IP core is integrated in the hardware. Support for non-interleaved cyclic transfers may be added later for audio. The driver has been successfully tested with the ZynqMP DisplayPort subsystem DRM driver. Vinod, please let me know if you would like authorship of patch 2/6 to be assigned to you, in which case I will need your SoB line. [1] https://lore.kernel.org/dmaengine/20191107021400.16474-1-laurent.pinchart@xxxxxxxxxxxxxxxx/ Hyun Kwon (1): dmaengine: xilinx: dpdma: Add the Xilinx DisplayPort DMA engine driver Laurent Pinchart (5): dt: bindings: dma: xilinx: dpdma: DT bindings for Xilinx DPDMA dmaengine: Add interleaved cyclic transaction type dmaengine: virt-dma: Use lockdep to check locking requirements dmaengine: xilinx: dpdma: Add debugfs support arm64: dts: zynqmp: Add DPDMA node .../dma/xilinx/xlnx,zynqmp-dpdma.yaml | 68 + MAINTAINERS | 9 + arch/arm64/boot/dts/xilinx/zynqmp-clk.dtsi | 4 + arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 10 + drivers/dma/Kconfig | 10 + drivers/dma/dmaengine.c | 8 +- drivers/dma/virt-dma.c | 2 + drivers/dma/virt-dma.h | 14 + drivers/dma/xilinx/Makefile | 1 + drivers/dma/xilinx/xilinx_dpdma.c | 1754 +++++++++++++++++ include/dt-bindings/dma/xlnx-zynqmp-dpdma.h | 16 + include/linux/dmaengine.h | 18 + 12 files changed, 1913 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml create mode 100644 drivers/dma/xilinx/xilinx_dpdma.c create mode 100644 include/dt-bindings/dma/xlnx-zynqmp-dpdma.h base-commit: d1eef1c619749b2a57e514a3fa67d9a516ffa919 -- Regards, Laurent Pinchart
