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., 675 Mass Ave, Cambridge, MA 02139, USA. 17 */ 18 19#include <linux/rwsem.h> 20 21struct i2c_devinfo { 22 struct list_head list; 23 int busnum; 24 struct i2c_board_info board_info; 25}; 26 27/* board_lock protects board_list and first_dynamic_bus_num. 28 * only i2c core components are allowed to use these symbols. 29 */ 30extern struct rw_semaphore __i2c_board_lock; 31extern struct list_head __i2c_board_list; 32extern int __i2c_first_dynamic_bus_num; 33 34