SPI master driver for Xilinx virtex

Simple SPI master driver for Xilinx SPI controller.
No support for multiple masters.
Not using level 1 drivers from EDK.

[akpm@linux-foundation.org: uninlining]
Signed-off-by: Yuri Frolov <yfrolov@ru.mvista.com>
Signed-off-by: Andrei Konovalov <akonovalov@ru.mvista.com>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/ppc/syslib/virtex_devices.h

@@ -31,4 +31,11 @@ void __init virtex_early_serial_map(void);
  */
 int virtex_device_fixup(struct platform_device *dev);
 
+/* SPI Controller IP */
+struct xspi_platform_data {
+	s16 bus_num;
+	u16 num_chipselect;
+	u32 speed_hz;
+};
+
 #endif  /* __ASM_VIRTEX_DEVICES_H__ */

drivers/spi/Kconfig

@@ -167,6 +167,17 @@ config SPI_S3C24XX_GPIO
 	  GPIO lines to provide the SPI bus. This can be used where
 	  the inbuilt hardware cannot provide the transfer mode, or
 	  where the board is using non hardware connected pins.
+
+config SPI_XILINX
+	tristate "Xilinx SPI controller"
+	depends on SPI_MASTER && XILINX_VIRTEX && EXPERIMENTAL
+	select SPI_BITBANG
+	help
+	  This exposes the SPI controller IP from the Xilinx EDK.
+
+	  See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
+	  Product Specification document (DS464) for hardware details.
+
 #
 # Add new SPI master controllers in alphabetical order above this line
 #

drivers/spi/Makefile

@@ -24,6 +24,7 @@ obj-$(CONFIG_SPI_MPC52xx_PSC)		+= mpc52xx_psc_spi.o
 obj-$(CONFIG_SPI_MPC83xx)		+= spi_mpc83xx.o
 obj-$(CONFIG_SPI_S3C24XX_GPIO)		+= spi_s3c24xx_gpio.o
 obj-$(CONFIG_SPI_S3C24XX)		+= spi_s3c24xx.o
+obj-$(CONFIG_SPI_XILINX)		+= xilinx_spi.o
 # 	... add above this line ...
 
 # SPI protocol drivers (device/link on bus)