dmaengine: add BCM2708 DMA support

This driver provides only DMA_CYCLIC mode.

Signed-off-by: Florian Meier <[email protected]>

Author: koalo

arch/arm/mach-bcm2708/include/mach/dma.h

@@ -45,6 +45,8 @@
 #define BCM2708_DMA_ADDR	0x04
 /* the current control block appears in the following registers - read only */
 #define BCM2708_DMA_INFO	0x08
+#define BCM2708_DMA_SOURCE_AD	0x0c
+#define BCM2708_DMA_DEST_AD	0x10
 #define BCM2708_DMA_NEXTCB	0x1C
 #define BCM2708_DMA_DEBUG	0x20
 

drivers/dma/Kconfig

@@ -313,6 +313,12 @@ config DMA_OMAP
 	select DMA_ENGINE
 	select DMA_VIRTUAL_CHANNELS
 
+config DMA_BCM2708
+	tristate "BCM2708 DMA engine support"
+	depends on MACH_BCM2708
+	select DMA_ENGINE
+	select DMA_VIRTUAL_CHANNELS
+
 config MMP_PDMA
 	bool "MMP PDMA support"
 	depends on (ARCH_MMP || ARCH_PXA)

drivers/dma/Makefile

@@ -33,4 +33,5 @@ obj-$(CONFIG_EP93XX_DMA) += ep93xx_dma.o
 obj-$(CONFIG_DMA_SA11X0) += sa11x0-dma.o
 obj-$(CONFIG_MMP_TDMA) += mmp_tdma.o
 obj-$(CONFIG_DMA_OMAP) += omap-dma.o
+obj-$(CONFIG_DMA_BCM2708) += bcm2708-dmaengine.o
 obj-$(CONFIG_MMP_PDMA) += mmp_pdma.o