i2c: iMX/MXC support

Implementation of I2C Adapter/Algorithm Driver for I2C Bus integrated
in Freescale's i.MX/MXC processors.

Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
Tested-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

arch/arm/plat-mxc/include/mach/i2c.h

@@ -0,0 +1,25 @@
+/*
+ * i2c.h - i.MX I2C driver header file
+ *
+ * Copyright (c) 2008, Darius Augulis <augulis.darius@gmail.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#ifndef __ASM_ARCH_I2C_H_
+#define __ASM_ARCH_I2C_H_
+
+/**
+ * struct imxi2c_platform_data - structure of platform data for MXC I2C driver
+ * @init:	Initialise gpio's and other board specific things
+ * @exit:	Free everything initialised by @init
+ * @bitrate:	Bus speed measured in Hz
+ *
+ **/
+struct imxi2c_platform_data {
+	int (*init)(struct device *dev);
+	void (*exit)(struct device *dev);
+	int bitrate;
+};
+
+#endif /* __ASM_ARCH_I2C_H_ */

drivers/i2c/busses/Kconfig

@@ -356,6 +356,16 @@ config I2C_IBM_IIC
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-ibm_iic.
 
+config I2C_IMX
+	tristate "IMX I2C interface"
+	depends on ARCH_MXC
+	help
+	  Say Y here if you want to use the IIC bus controller on
+	  the Freescale i.MX/MXC processors.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-imx.
+
 config I2C_IOP3XX
 	tristate "Intel IOPx3xx and IXP4xx on-chip I2C interface"
 	depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX || ARCH_IOP13XX

drivers/i2c/busses/Makefile

@@ -33,6 +33,7 @@ obj-$(CONFIG_I2C_DAVINCI)	+= i2c-davinci.o
 obj-$(CONFIG_I2C_GPIO)		+= i2c-gpio.o
 obj-$(CONFIG_I2C_HIGHLANDER)	+= i2c-highlander.o
 obj-$(CONFIG_I2C_IBM_IIC)	+= i2c-ibm_iic.o
+obj-$(CONFIG_I2C_IMX)		+= i2c-imx.o
 obj-$(CONFIG_I2C_IOP3XX)	+= i2c-iop3xx.o
 obj-$(CONFIG_I2C_IXP2000)	+= i2c-ixp2000.o
 obj-$(CONFIG_I2C_MPC)		+= i2c-mpc.o