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Commit a4ffb13c authored by Pierre-Yves MORDRET's avatar Pierre-Yves MORDRET Committed by Vinod Koul
Browse files

dmaengine: Add STM32 MDMA driver 



This patch adds the driver for the STM32 MDMA controller.

Master Direct memory access (MDMA) is used in order to provide high-speed
data transfer between memory and memory or between peripherals and memory.

MDMA controller provides a master AXI interface for main memory and
peripheral registers access (system access port) and a master AHB
interface only for Cortex-M7 TCM memory access (TCM access port).

MDMA works in conjunction with the standard DMA controllers (DMA1 or DMA2).
It offers up to 64 channels, each dedicated to managing memory access
requests from one of the DMA stream memory buffer or other peripherals
(w/ integrated FIFO).

Signed-off-by: default avatarM'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: default avatarPierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 18d59893

drivers/dma/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -492,6 +492,18 @@ config STM32_DMAMUX 
	  If you have a board based on such a MCU and wish to use DMAMUX say Y

	  here.



config STM32_MDMA

	bool "STMicroelectronics STM32 master dma support"

	depends on ARCH_STM32 || COMPILE_TEST

	select DMA_ENGINE

	select DMA_OF

	select DMA_VIRTUAL_CHANNELS

	help

	  Enable support for the on-chip MDMA controller on STMicroelectronics

	  STM32 platforms.

	  If you have a board based on STM32 SoC and wish to use the master DMA

	  say Y here.



config S3C24XX_DMAC

	bool "Samsung S3C24XX DMA support"

	depends on ARCH_S3C24XX || COMPILE_TEST

drivers/dma/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ obj-$(CONFIG_SIRF_DMA) += sirf-dma.o 
obj-$(CONFIG_STE_DMA40) += ste_dma40.o ste_dma40_ll.o

obj-$(CONFIG_STM32_DMA) += stm32-dma.o

obj-$(CONFIG_STM32_DMAMUX) += stm32-dmamux.o

obj-$(CONFIG_STM32_MDMA) += stm32-mdma.o

obj-$(CONFIG_S3C24XX_DMAC) += s3c24xx-dma.o

obj-$(CONFIG_TXX9_DMAC) += txx9dmac.o

obj-$(CONFIG_TEGRA20_APB_DMA) += tegra20-apb-dma.o

drivers/dma/stm32-mdma.c

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