Commit d8902adc authored by Nobuhiro Iwamatsu's avatar Nobuhiro Iwamatsu Committed by Dan Williams
Browse files

dmaengine: sh: Add Support SuperH DMA Engine driver 



This supported all DMA channels, and it was tested in SH7722,
SH7780, SH7785 and SH7763.
This can not use with SH DMA API.

Signed-off-by: default avatarNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Reviewed-by: default avatarMatt Fleming <matt@console-pimps.org>
Acked-by: default avatarMaciej Sosnowski <maciej.sosnowski@intel.com>
Acked-by: default avatarPaul Mundt <lethal@linux-sh.org>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 9134d02b

arch/sh/drivers/dma/Kconfig

+9 −3
Original line number Diff line number Diff line 
menu "DMA support"



config SH_DMA_API

	bool



config SH_DMA

	bool "SuperH on-chip DMA controller (DMAC) support"

	depends on CPU_SH3 || CPU_SH4

	select SH_DMA_API

	default n



config SH_DMA_IRQ_MULTI
@@ -19,6 +16,15 @@ config SH_DMA_IRQ_MULTI 
		     CPU_SUBTYPE_SH7780  || CPU_SUBTYPE_SH7785  || \

		     CPU_SUBTYPE_SH7760



config SH_DMA_API

	depends on SH_DMA

	bool "SuperH DMA API support"

	default n

	help

	  SH_DMA_API always enabled DMA API of used SuperH.

	  If you want to use DMA ENGINE, you must not enable this.

	  Please enable DMA_ENGINE and SH_DMAE.



config NR_ONCHIP_DMA_CHANNELS

	int

	depends on SH_DMA

arch/sh/drivers/dma/Makefile

+1 −2
Original line number Diff line number Diff line
@@ -2,8 +2,7 @@ 
# Makefile for the SuperH DMA specific kernel interface routines under Linux.

#



obj-$(CONFIG_SH_DMA_API)	+= dma-api.o dma-sysfs.o

obj-$(CONFIG_SH_DMA)		+= dma-sh.o

obj-$(CONFIG_SH_DMA_API)	+= dma-sh.o dma-api.o dma-sysfs.o

obj-$(CONFIG_PVR2_DMA)		+= dma-pvr2.o

obj-$(CONFIG_G2_DMA)		+= dma-g2.o

obj-$(CONFIG_SH_DMABRG)		+= dmabrg.o

arch/sh/include/asm/dma-sh.h

+13 −0
Original line number Diff line number Diff line
@@ -115,4 +115,17 @@ static u32 dma_base_addr[] __maybe_unused = { 
#define CHCR    0x0C

#define DMAOR	0x40



/*

 * for dma engine

 *

 * SuperH DMA mode

 */

#define SHDMA_MIX_IRQ	(1 << 1)

#define SHDMA_DMAOR1	(1 << 2)

#define SHDMA_DMAE1		(1 << 3)



struct sh_dmae_pdata {

	unsigned int mode;

};



#endif /* __DMA_SH_H */

drivers/dma/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -101,6 +101,14 @@ config TXX9_DMAC 
	  Support the TXx9 SoC internal DMA controller.  This can be

	  integrated in chips such as the Toshiba TX4927/38/39.



config SH_DMAE

	tristate "Renesas SuperH DMAC support"

	depends on SUPERH && SH_DMA

	depends on !SH_DMA_API

	select DMA_ENGINE

	help

	  Enable support for the Renesas SuperH DMA controllers.



config DMA_ENGINE

	bool

drivers/dma/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -9,3 +9,4 @@ obj-$(CONFIG_DW_DMAC) += dw_dmac.o 
obj-$(CONFIG_AT_HDMAC) += at_hdmac.o

obj-$(CONFIG_MX3_IPU) += ipu/

obj-$(CONFIG_TXX9_DMAC) += txx9dmac.o

obj-$(CONFIG_SH_DMAE) += shdma.o

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