[PATCH] spi: add spi master driver for Freescale MPC83xx SPI controller

This driver supports the SPI controller on the MPC83xx SoC devices from
Freescale.  Note, this driver supports only the simple shift register SPI
controller and not the descriptor based CPM or QUICCEngine SPI controller.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/spi/Kconfig

@@ -75,6 +75,18 @@ config SPI_BUTTERFLY
 	  inexpensive battery powered microcontroller evaluation board.
 	  This same cable can be used to flash new firmware.
 
+config SPI_MPC83xx
+	tristate "Freescale MPC83xx SPI controller"
+	depends on SPI_MASTER && PPC_83xx && EXPERIMENTAL
+	select SPI_BITBANG
+	help
+	  This enables using the Freescale MPC83xx SPI controller in master
+	  mode.
+
+	  Note, this driver uniquely supports the SPI controller on the MPC83xx
+	  family of PowerPC processors.  The MPC83xx uses a simple set of shift
+	  registers for data (opposed to the CPM based descriptor model).
+
 config SPI_PXA2XX
 	tristate "PXA2xx SSP SPI master"
 	depends on SPI_MASTER && ARCH_PXA && EXPERIMENTAL

drivers/spi/Makefile

@@ -14,6 +14,7 @@ obj-$(CONFIG_SPI_MASTER)		+= spi.o
 obj-$(CONFIG_SPI_BITBANG)		+= spi_bitbang.o
 obj-$(CONFIG_SPI_BUTTERFLY)		+= spi_butterfly.o
 obj-$(CONFIG_SPI_PXA2XX)		+= pxa2xx_spi.o
+obj-$(CONFIG_SPI_MPC83xx)		+= spi_mpc83xx.o
 # 	... add above this line ...
 
 # SPI protocol drivers (device/link on bus)

include/linux/fsl_devices.h

@@ -110,5 +110,16 @@ struct fsl_usb2_platform_data {
 #define FSL_USB2_PORT0_ENABLED	0x00000001
 #define FSL_USB2_PORT1_ENABLED	0x00000002
 
+struct fsl_spi_platform_data {
+	u32 	initial_spmode;	/* initial SPMODE value */
+	u16	bus_num;
+
+	/* board specific information */
+	u16	max_chipselect;
+	void	(*activate_cs)(u8 cs, u8 polarity);
+	void	(*deactivate_cs)(u8 cs, u8 polarity);
+	u32	sysclk;
+};
+
 #endif				/* _FSL_DEVICE_H_ */
 #endif				/* __KERNEL__ */