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