[mirror_ubuntu-zesty-kernel.git] / drivers / i2c / i2c-core.h

/*
 * 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;
Commit	Line	Data
9c1600ed DB	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.
9c1600ed DB	13	*/
9c1600ed DB	14
f18c41da RG	15	#include <linux/rwsem.h>
f18c41da RG	16
9c1600ed DB	17	struct i2c_devinfo {
	18	struct list_head list;
	19	int busnum;
	20	struct i2c_board_info board_info;
	21	};
	22
	23	/* board_lock protects board_list and first_dynamic_bus_num.
	24	* only i2c core components are allowed to use these symbols.
	25	*/
f18c41da	26	extern struct rw_semaphore __i2c_board_lock;
9c1600ed DB	27	extern struct list_head __i2c_board_list;
	28	extern int __i2c_first_dynamic_bus_num;
	29