ARM: OMAP: Add helper module for board specific I2C bus registration

This helper module simplifies I2C bus registration for different OMAP
platforms by doing registration in one place only and to allow board
specific bus configuration like clock rate and number of busses configured.

Helper should cover OMAP processors from first to third generation.

This patch just adds the feature and current implementation cleanup and
board file modifications will be done in following patches.

Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

2 files changed, 13 insertions, 0 deletions

diff --git a/include/asm-arm/arch-omap/common.h b/include/asm-arm/arch-omap/common.h
index 08d58abd8218..442aecbb8f44 100644
--- a/include/asm-arm/arch-omap/common.h
+++ b/include/asm-arm/arch-omap/common.h
@@ -27,10 +27,21 @@
 #ifndef __ARCH_ARM_MACH_OMAP_COMMON_H
 #define __ARCH_ARM_MACH_OMAP_COMMON_H
 
+#ifdef CONFIG_I2C_OMAP
+#include <linux/i2c.h>
+#endif
+
 struct sys_timer;
 
 extern void omap_map_common_io(void);
 extern struct sys_timer omap_timer;
 extern void omap_serial_init(void);
+#ifdef CONFIG_I2C_OMAP
+extern int omap_register_i2c_bus(int bus_id, u32 clkrate,
+                                 struct i2c_board_info const *info,
+                                 unsigned len);
+#else
+#define omap_register_i2c_bus(a, b, c, d)       0
+#endif
 
 #endif /* __ARCH_ARM_MACH_OMAP_COMMON_H */
diff --git a/include/asm-arm/arch-omap/irqs.h b/include/asm-arm/arch-omap/irqs.h
index 3ede58b51db2..87973654e625 100644
--- a/include/asm-arm/arch-omap/irqs.h
+++ b/include/asm-arm/arch-omap/irqs.h
@@ -263,6 +263,8 @@
 #define INT_24XX_GPTIMER10      46
 #define INT_24XX_GPTIMER11      47
 #define INT_24XX_GPTIMER12      48
+#define INT_24XX_I2C1_IRQ       56
+#define INT_24XX_I2C2_IRQ       57
 #define INT_24XX_MCBSP1_IRQ_TX  59
 #define INT_24XX_MCBSP1_IRQ_RX  60
 #define INT_24XX_MCBSP2_IRQ_TX  62