NAME¶

struct_i2c_driver - represent an I2C device driver

SYNOPSIS¶

struct i2c_driver {


  unsigned int class;


  int (* attach_adapter) (struct i2c_adapter *);


  int (* probe) (struct i2c_client *, const struct i2c_device_id *);


  int (* remove) (struct i2c_client *);


  void (* shutdown) (struct i2c_client *);


  void (* alert) (struct i2c_client *, enum i2c_alert_protocol protocol,unsigned int data);


  int (* command) (struct i2c_client *client, unsigned int cmd, void *arg);


  struct device_driver driver;


  const struct i2c_device_id * id_table;


  int (* detect) (struct i2c_client *, struct i2c_board_info *);


  const unsigned short * address_list;


  struct list_head clients;
};  

MEMBERS¶

class

attach_adapter

probe

remove

shutdown

alert

command

driver

id_table

detect

address_list

clients

DESCRIPTION¶

The driver.owner field should be set to the module owner of this driver. The driver.name field should be set to the name of this driver.

For automatic device detection, both detect and address_list must be defined. class should also be set, otherwise only devices forced with module parameters will be created. The detect function must fill at least the name field of the i2c_board_info structure it is handed upon successful detection, and possibly also the flags field.

If detect is missing, the driver will still work fine for enumerated devices. Detected devices simply won't be supported. This is expected for the many I2C/SMBus devices which can't be detected reliably, and the ones which can always be enumerated in practice.

The i2c_client structure which is handed to the detect callback is not a real i2c_client. It is initialized just enough so that you can call i2c_smbus_read_byte_data and friends on it. Don't do anything else with it. In particular, calling dev_dbg and friends on it is not allowed.

COPYRIGHT¶