dmaengine: sun6i: Add driver for the Allwinner A31 DMA controller (55585930) · Commits · 戴 / test

The Allwinner A31 has a 16 channels DMA controller that it shares with the newer A23. Although sharing some similarities with the DMA controller of the older Allwinner SoCs, it's significantly different, I don't expect it to be possible to share the driver for these two. The A31 Controller is able to memory-to-memory or memory-to-device transfers on the 16 channels in parallel. Signed-off-by:

Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by:

Arnd Bergmann <arnd@arndb.de> Signed-off-by:

Vinod Koul <vinod.koul@intel.com>

drivers/dma/Kconfig

+8 −0

Original line number	Diff line number	Diff line
		@@ -375,6 +375,14 @@ config XILINX_VDMA
		channels, Memory Mapped to Stream (MM2S) and Stream to
		Memory Mapped (S2MM) for the data transfers.

		config DMA_SUN6I
		tristate "Allwinner A31 SoCs DMA support"
		depends on MACH_SUN6I \|\| COMPILE_TEST
		select DMA_ENGINE
		select DMA_VIRTUAL_CHANNELS
		help
		Support for the DMA engine for Allwinner A31 SoCs.

		config DMA_ENGINE
		bool

drivers/dma/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -47,3 +47,4 @@ obj-$(CONFIG_MOXART_DMA) += moxart-dma.o
		obj-$(CONFIG_FSL_EDMA) += fsl-edma.o
		obj-$(CONFIG_QCOM_BAM_DMA) += qcom_bam_dma.o
		obj-y += xilinx/
		obj-$(CONFIG_DMA_SUN6I) += sun6i-dma.o

drivers/dma/sun6i-dma.c

0 → 100644

+1059 −0

File added.

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