xref: /linux/include/linux/via_i2c.h (revision 58e16d792a6a8c6b750f637a4649967fcac853dc)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
4  * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
5 
6  */
7 #ifndef __VIA_I2C_H__
8 #define __VIA_I2C_H__
9 
10 #include <linux/i2c.h>
11 #include <linux/i2c-algo-bit.h>
12 
13 struct via_i2c_stuff {
14 	u16 i2c_port;			/* GPIO or I2C port */
15 	u16 is_active;			/* Being used as I2C? */
16 	struct i2c_adapter adapter;
17 	struct i2c_algo_bit_data algo;
18 };
19 
20 
21 int viafb_i2c_readbyte(u8 adap, u8 slave_addr, u8 index, u8 *pdata);
22 int viafb_i2c_writebyte(u8 adap, u8 slave_addr, u8 index, u8 data);
23 int viafb_i2c_readbytes(u8 adap, u8 slave_addr, u8 index, u8 *buff, int buff_len);
24 struct i2c_adapter *viafb_find_i2c_adapter(enum viafb_i2c_adap which);
25 
26 extern int viafb_i2c_init(void);
27 extern void viafb_i2c_exit(void);
28 #endif /* __VIA_I2C_H__ */
29