extern struct device_node *pmac_i2c_get_bus_node(struct pmac_i2c_bus *bus);
extern int pmac_i2c_get_type(struct pmac_i2c_bus *bus);
extern int pmac_i2c_get_flags(struct pmac_i2c_bus *bus);
+extern int pmac_i2c_get_channel(struct pmac_i2c_bus *bus);
/* i2c layer adapter attach/detach */
extern void pmac_i2c_attach_adapter(struct pmac_i2c_bus *bus,
extern void pmac_i2c_detach_adapter(struct pmac_i2c_bus *bus,
struct i2c_adapter *adapter);
extern struct i2c_adapter *pmac_i2c_get_adapter(struct pmac_i2c_bus *bus);
+extern struct pmac_i2c_bus *pmac_i2c_adapter_to_bus(struct i2c_adapter *adapter);
/* March a device or bus with an i2c adapter structure, to be used by drivers
* to match device-tree nodes with i2c adapters during adapter discovery