1 /*
2  * Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
3  * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
4 
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public
7  * License as published by the Free Software Foundation;
8  * either version 2, or (at your option) any later version.
9 
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
12  * the implied warranty of MERCHANTABILITY or FITNESS FOR
13  * A PARTICULAR PURPOSE.See the GNU General Public License
14  * for more details.
15 
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc.,
19  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20  */
21 #ifndef __VIA_I2C_H__
22 #define __VIA_I2C_H__
23 
24 #include <linux/i2c.h>
25 #include <linux/i2c-algo-bit.h>
26 
27 struct via_i2c_stuff {
28 	u16 i2c_port;			/* GPIO or I2C port */
29 	u16 is_active;			/* Being used as I2C? */
30 	struct i2c_adapter adapter;
31 	struct i2c_algo_bit_data algo;
32 };
33 
34 
35 int viafb_i2c_readbyte(u8 adap, u8 slave_addr, u8 index, u8 *pdata);
36 int viafb_i2c_writebyte(u8 adap, u8 slave_addr, u8 index, u8 data);
37 int viafb_i2c_readbytes(u8 adap, u8 slave_addr, u8 index, u8 *buff, int buff_len);
38 struct i2c_adapter *viafb_find_i2c_adapter(enum viafb_i2c_adap which);
39 
40 extern int viafb_i2c_init(void);
41 extern void viafb_i2c_exit(void);
42 #endif /* __VIA_I2C_H__ */
43