struct_i2c_bus_recovery_info (9)

struct i2c_bus_recovery_info {
  int (* recover_bus) (struct i2c_adapter *);
  int (* get_scl) (struct i2c_adapter *);
  void (* set_scl) (struct i2c_adapter *, int val);
  int (* get_sda) (struct i2c_adapter *);
  void (* prepare_recovery) (struct i2c_bus_recovery_info *bri);
  void (* unprepare_recovery) (struct i2c_bus_recovery_info *bri);
  int scl_gpio;
  int sda_gpio;
};

recover_bus

Recover routine. Either pass driver's recover_bus routine, or i2c_generic_scl_recovery or i2c_generic_gpio_recovery.

get_scl

This gets current value of SCL line. Mandatory for generic SCL recovery. Used internally for generic GPIO recovery.

set_scl

This sets/clears SCL line. Mandatory for generic SCL recovery. Used internally for generic GPIO recovery.

get_sda

This gets current value of SDA line. Optional for generic SCL recovery. Used internally, if sda_gpio is a valid GPIO, for generic GPIO recovery.

prepare_recovery

This will be called before starting recovery. Platform may configure padmux here for SDA/SCL line or something else they want.

unprepare_recovery

This will be called after completing recovery. Platform may configure padmux here for SDA/SCL line or something else they want.

scl_gpio

gpio number of the SCL line. Only required for GPIO recovery.

sda_gpio

gpio number of the SDA line. Only required for GPIO recovery.