[PATCH] SPI: atmel_spi driver

Driver for the Atmel on-chip SPI master controller.

Tested primarily on AVR32/AT32AP7000/ATSTK1000 using mtd_dataflash and the
jffs2 filesystem.  Should also work fine on various AT91 ARM-based chips
like AT91SAM926x and AT91RM9200.

Hardware documentation can be found in the AT32AP7000 data sheet, or its
AT91 siblings, which can be downloaded from

http://www.atmel.com/dyn/products/datasheets.asp?family_id=682

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

MAINTAINERS

@@ -620,6 +620,11 @@ P:	Haavard Skinnemoen
 M:	hskinnemoen@atmel.com
 S:	Supported
 
+ATMEL SPI DRIVER
+P:	Haavard Skinnemoen
+M:	hskinnemoen@atmel.com
+S:	Supported
+
 ATMEL WIRELESS DRIVER
 P:	Simon Kelley
 M:	simon@thekelleys.org.uk

drivers/spi/Kconfig

@@ -51,6 +51,13 @@ config SPI_MASTER
 comment "SPI Master Controller Drivers"
 	depends on SPI_MASTER
 
+config SPI_ATMEL
+	tristate "Atmel SPI Controller"
+	depends on (ARCH_AT91 || AVR32) && SPI_MASTER
+	help
+	  This selects a driver for the Atmel SPI Controller, present on
+	  many AT32 (AVR32) and AT91 (ARM) chips.
+
 config SPI_BITBANG
 	tristate "Bitbanging SPI master"
 	depends on SPI_MASTER && EXPERIMENTAL

drivers/spi/Makefile

@@ -12,6 +12,7 @@ obj-$(CONFIG_SPI_MASTER)		+= spi.o
 
 # SPI master controller drivers (bus)
 obj-$(CONFIG_SPI_BITBANG)		+= spi_bitbang.o
+obj-$(CONFIG_SPI_ATMEL)			+= atmel_spi.o
 obj-$(CONFIG_SPI_BUTTERFLY)		+= spi_butterfly.o
 obj-$(CONFIG_SPI_IMX)			+= spi_imx.o
 obj-$(CONFIG_SPI_PXA2XX)		+= pxa2xx_spi.o