| David Brownell | 9c1600e | 2007-05-01 23:26:31 +0200 | [diff] [blame] | 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 | |
| Rodolfo Giometti | f18c41d | 2009-06-19 16:58:20 +0200 | [diff] [blame] | 19 | #include <linux/rwsem.h> |
| 20 | |
| David Brownell | 9c1600e | 2007-05-01 23:26:31 +0200 | [diff] [blame] | 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 | */ |
| Rodolfo Giometti | f18c41d | 2009-06-19 16:58:20 +0200 | [diff] [blame] | 30 | extern struct rw_semaphore __i2c_board_lock; |
| David Brownell | 9c1600e | 2007-05-01 23:26:31 +0200 | [diff] [blame] | 31 | extern struct list_head __i2c_board_list; |
| 32 | extern int __i2c_first_dynamic_bus_num; |
| 33 | |