dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver (0c1c8ff3) · Commits · 戴 / test

This DMAC is Renesas USB high-speed module DMA controller that supports slave transfer. This USB-DMAC has similar register sets with R-Car Gen2 DMAC, but the USB-DMAC has specific registers to control the USB transactions. If this code is added into the rcar-dmac driver, it will become unreadable. So, this driver is independent from the rcar-dmac. And, this USB-DMAC uses virt-dma infrastructure. Signed-off-by:

Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by:

Vinod Koul <vinod.koul@intel.com>

drivers/dma/sh/Kconfig

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Original line number	Diff line number	Diff line
		@@ -64,3 +64,12 @@ config RCAR_DMAC
		help
		This driver supports the general purpose DMA controller found in the
		Renesas R-Car second generation SoCs.

		config RENESAS_USB_DMAC
		tristate "Renesas USB-DMA Controller"
		depends on ARCH_SHMOBILE \|\| COMPILE_TEST
		select RENESAS_DMA
		select DMA_VIRTUAL_CHANNELS
		help
		This driver supports the USB-DMA controller found in the Renesas
		SoCs.

drivers/dma/sh/Makefile

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Original line number	Diff line number	Diff line
		@@ -17,3 +17,4 @@ obj-$(CONFIG_SUDMAC) += sudmac.o
		obj-$(CONFIG_RCAR_HPB_DMAE) += rcar-hpbdma.o
		obj-$(CONFIG_RCAR_AUDMAC_PP) += rcar-audmapp.o
		obj-$(CONFIG_RCAR_DMAC) += rcar-dmac.o
		obj-$(CONFIG_RENESAS_USB_DMAC) += usb-dmac.o

drivers/dma/sh/usb-dmac.c

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File added.

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