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

#ifndef _LINUX_I2C_ALGO_PXA_H
#define _LINUX_I2C_ALGO_PXA_H

typedef enum i2c_slave_event_e {
	I2C_SLAVE_EVENT_START_READ,
	I2C_SLAVE_EVENT_START_WRITE,
	I2C_SLAVE_EVENT_STOP
} i2c_slave_event_t;

struct i2c_slave_client {
	void *data;
	void (*event)(void *ptr, i2c_slave_event_t event);
	int  (*read) (void *ptr);
	void (*write)(void *ptr, unsigned int val);
};

#endif /* _LINUX_I2C_ALGO_PXA_H */