[PATCH] I2C: add Marvell mv64xxx i2c driver

Marvell makes a line of host bridge for PPC and MIPS systems.  On those
bridges is an i2c controller.  This patch adds the driver for that i2c
controller.

Please apply.

Depends on patch submitted by Jean Delvare:
http://archives.andrew.net.au/lm-sensors/msg29405.htmlSigned-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/i2c/busses/Kconfig

@@ -486,4 +486,14 @@ config I2C_PCA_ISA
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-pca-isa.
 
+config I2C_MV64XXX
+	tristate "Marvell mv64xxx I2C Controller"
+	depends on I2C && MV64X60 && EXPERIMENTAL
+	help
+	  If you say yes to this option, support will be included for the
+	  built-in I2C interface on the Marvell 64xxx line of host bridges.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-mv64xxx.
+
 endmenu

drivers/i2c/busses/Makefile

@@ -21,6 +21,7 @@ obj-$(CONFIG_I2C_IXP2000)	+= i2c-ixp2000.o
 obj-$(CONFIG_I2C_IXP4XX)	+= i2c-ixp4xx.o
 obj-$(CONFIG_I2C_KEYWEST)	+= i2c-keywest.o
 obj-$(CONFIG_I2C_MPC)		+= i2c-mpc.o
+obj-$(CONFIG_I2C_MV64XXX)	+= i2c-mv64xxx.o
 obj-$(CONFIG_I2C_NFORCE2)	+= i2c-nforce2.o
 obj-$(CONFIG_I2C_PARPORT)	+= i2c-parport.o
 obj-$(CONFIG_I2C_PARPORT_LIGHT)	+= i2c-parport-light.o

include/linux/i2c-id.h

@@ -310,4 +310,7 @@
 /* --- MCP107 adapter */
 #define I2C_HW_MPC107 0x00
 
+/* --- Marvell mv64xxx i2c adapter */
+#define I2C_HW_MV64XXX 0x00
+
 #endif /* LINUX_I2C_ID_H */

include/linux/mv643xx.h

@@ -977,12 +977,9 @@
 /* I2C Registers                        */
 /****************************************/
 
-#define MV64340_I2C_SLAVE_ADDR                                      0xc000
-#define MV64340_I2C_EXTENDED_SLAVE_ADDR                             0xc010
-#define MV64340_I2C_DATA                                            0xc004
-#define MV64340_I2C_CONTROL                                         0xc008
-#define MV64340_I2C_STATUS_BAUDE_RATE                               0xc00C
-#define MV64340_I2C_SOFT_RESET                                      0xc01c
+#define MV64XXX_I2C_CTLR_NAME					"mv64xxx i2c"
+#define MV64XXX_I2C_OFFSET                                          0xc000
+#define MV64XXX_I2C_REG_BLOCK_SIZE                                  0x0020
 
 /****************************************/
 /* GPP Interface Registers              */
@@ -1085,4 +1082,12 @@ struct mpsc_pdata {
 	u32	brg_clk_freq;
 };
 
+/* i2c Platform Device, Driver Data */
+struct mv64xxx_i2c_pdata {
+	u32	freq_m;
+	u32	freq_n;
+	u32	timeout;	/* In milliseconds */
+	u32	retries;
+};
+
 #endif /* __ASM_MV64340_H */