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dmaengine: driver for the ARM PL080/PL081 PrimeCells v5

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This creates a DMAengine driver for the ARM PL080/PL081 PrimeCells
based on the implementation earlier submitted by Peter Pearse.
This is working like a charm for memcpy and slave DMA to the PL011
PrimeCell on the PB11MPCore.

This DMA controller is used in mostly unmodified form in the ARM
RealView and Versatile platforms, in the ST-Ericsson Nomadik, and
in the ST SPEAr platform.

It has been converted to use the header from the Samsung PL080
derivate instead of its own defintions. The Samsungs have a custom
driver in their mach-* folders though, atleast we can share the
register definitions.

Cc: Peter Pearse <[email protected]>
Cc: Ben Dooks <[email protected]>
Cc: Kukjin Kim <[email protected]>
Cc: Alessandro Rubini <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
[GFP_KERNEL to GFP_NOWAIT in pl08x_prep_dma_memcpy]
Signed-off-by: Dan Williams <[email protected]>
This commit is contained in:
Linus Walleij 2010-09-28 15:57:37 +02:00 • committed by Dan Williams
commit e8689e63d4
4 changed files with 2398 additions and 0 deletions
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8
drivers/dma/Kconfig
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@ -49,6 +49,14 @@ config INTEL_MID_DMAC
config ASYNC_TX_DISABLE_CHANNEL_SWITCH
bool
config AMBA_PL08X
bool "ARM PrimeCell PL080 or PL081 support"
depends on ARM_AMBA && EXPERIMENTAL
select DMA_ENGINE
help
Platform has a PL08x DMAC device
which can provide DMA engine support
config INTEL_IOATDMA
tristate "Intel I/OAT DMA support"
depends on PCI && X86

1
drivers/dma/Makefile
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@ -25,3 +25,4 @@ obj-$(CONFIG_TIMB_DMA) += timb_dma.o
obj-$(CONFIG_STE_DMA40) += ste_dma40.o ste_dma40_ll.o
obj-$(CONFIG_PL330_DMA) += pl330.o
obj-$(CONFIG_PCH_DMA) += pch_dma.o
obj-$(CONFIG_AMBA_PL08X) += amba-pl08x.o

2167
drivers/dma/amba-pl08x.c Normal file
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