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 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 17 * MA 02110-1301 USA. 18 */ 19 20#include <linux/rwsem.h> 21 22struct i2c_devinfo { 23 struct list_head list; 24 int busnum; 25 struct i2c_board_info board_info; 26}; 27 28/* board_lock protects board_list and first_dynamic_bus_num. 29 * only i2c core components are allowed to use these symbols. 30 */ 31extern struct rw_semaphore __i2c_board_lock; 32extern struct list_head __i2c_board_list; 33extern int __i2c_first_dynamic_bus_num; 34 35