1. 根目录:
2. include
3. linux
4. i2c-omap.h

#ifndef __I2C_OMAP_H__
#define __I2C_OMAP_H__

#include <linux/platform_device.h>

/*
 * Version 2 of the I2C peripheral unit has a different register
 * layout and extra registers.  The ID register in the V2 peripheral
 * unit on the OMAP4430 reports the same ID as the V1 peripheral
 * unit on the OMAP3530, so we must inform the driver which IP
 * version we know it is running on from platform / cpu-specific
 * code using these constants in the hwmod class definition.
 */

#define OMAP_I2C_IP_VERSION_1 1
#define OMAP_I2C_IP_VERSION_2 2

/* struct omap_i2c_bus_platform_data .flags meanings */

#define OMAP_I2C_FLAG_NO_FIFO			BIT(0)
#define OMAP_I2C_FLAG_SIMPLE_CLOCK		BIT(1)
#define OMAP_I2C_FLAG_16BIT_DATA_REG		BIT(2)
#define OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK	BIT(5)
#define OMAP_I2C_FLAG_FORCE_19200_INT_CLK	BIT(6)
/* how the CPU address bus must be translated for I2C unit access */
#define OMAP_I2C_FLAG_BUS_SHIFT_NONE 0
#define OMAP_I2C_FLAG_BUS_SHIFT_1		BIT(7)
#define OMAP_I2C_FLAG_BUS_SHIFT_2		BIT(8)
#define OMAP_I2C_FLAG_BUS_SHIFT__SHIFT 7

struct omap_i2c_bus_platform_data {
	u32		clkrate;
	u32		rev;
	u32		flags;
	void		(*set_mpu_wkup_lat)(struct device *dev, long set);
};

#endif