diff options
Diffstat (limited to 'kernel/drivers/i2c/i2c-core.h')
| -rw-r--r-- | kernel/drivers/i2c/i2c-core.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/kernel/drivers/i2c/i2c-core.h b/kernel/drivers/i2c/i2c-core.h new file mode 100644 index 000000000..17700bfdd --- /dev/null +++ b/kernel/drivers/i2c/i2c-core.h @@ -0,0 +1,29 @@ +/* + * i2c-core.h - interfaces internal to the I2C framework + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/rwsem.h> + +struct i2c_devinfo { + struct list_head list; + int busnum; + struct i2c_board_info board_info; +}; + +/* board_lock protects board_list and first_dynamic_bus_num. + * only i2c core components are allowed to use these symbols. + */ +extern struct rw_semaphore __i2c_board_lock; +extern struct list_head __i2c_board_list; +extern int __i2c_first_dynamic_bus_num; + |