blob: 18a8fd21d2c226741445fdc5bf12ed306e10ff7e [file] [log] [blame]
David Brownell9c1600e2007-05-01 23:26:31 +02001/*
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
Jean Delvare5694f8a2012-03-26 21:47:19 +020016 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
17 * MA 02110-1301 USA.
David Brownell9c1600e2007-05-01 23:26:31 +020018 */
19
Rodolfo Giomettif18c41d2009-06-19 16:58:20 +020020#include <linux/rwsem.h>
21
David Brownell9c1600e2007-05-01 23:26:31 +020022struct 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 */
Rodolfo Giomettif18c41d2009-06-19 16:58:20 +020031extern struct rw_semaphore __i2c_board_lock;
David Brownell9c1600e2007-05-01 23:26:31 +020032extern struct list_head __i2c_board_list;
33extern int __i2c_first_dynamic_bus_num;
34