1 /* 2 * i2c-core.h - interfaces internal to the I2C framework 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 */ 14 15 #include <linux/rwsem.h> 16 17 struct i2c_devinfo { 18 struct list_head list; 19 int busnum; 20 struct i2c_board_info board_info; 21 }; 22 23 /* board_lock protects board_list and first_dynamic_bus_num. 24 * only i2c core components are allowed to use these symbols. 25 */ 26 extern struct rw_semaphore __i2c_board_lock; 27 extern struct list_head __i2c_board_list; 28 extern int __i2c_first_dynamic_bus_num; 29 30