Line data Source code
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 :
21 : struct 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 : */
30 1 : extern struct rw_semaphore __i2c_board_lock;
31 1 : extern struct list_head __i2c_board_list;
32 1 : extern int __i2c_first_dynamic_bus_num;
33 :
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