Linux Device Drivers Development

The i2c_driver structure

An I2C driver is declared in kernel as an instance of struct i2c_driver, which looks as follows:

struct i2c_driver { 
    /* Standard driver model interfaces */ 
int (*probe)(struct i2c_client *, const struct i2c_device_id *); 
int (*remove)(struct i2c_client *); 
 
    /* driver model interfaces that don't relate to enumeration */ 
    void (*shutdown)(struct i2c_client *); 
 
struct device_driver driver; 
const struct i2c_device_id *id_table; 
}; 

The struct i2c_driver structure contains and characterizes general access routines needed to handle the devices claiming the driver, whereas struct i2c_client contains device-specific information, such as its address. A struct i2c_client structure represents and characterizes an I2C device. Later ...