include/linux/via_i2c.h

0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002 /*
0003  * Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
0004  * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
0005
0006  */
0007 #ifndef __VIA_I2C_H__
0008 #define __VIA_I2C_H__
0009
0010 #include <linux/i2c.h>
0011 #include <linux/i2c-algo-bit.h>
0012
0013 struct via_i2c_stuff {
0014     u16 i2c_port;           /* GPIO or I2C port */
0015     u16 is_active;          /* Being used as I2C? */
0016     struct i2c_adapter adapter;
0017     struct i2c_algo_bit_data algo;
0018 };
0019
0020
0021 int viafb_i2c_readbyte(u8 adap, u8 slave_addr, u8 index, u8 *pdata);
0022 int viafb_i2c_writebyte(u8 adap, u8 slave_addr, u8 index, u8 data);
0023 int viafb_i2c_readbytes(u8 adap, u8 slave_addr, u8 index, u8 *buff, int buff_len);
0024 struct i2c_adapter *viafb_find_i2c_adapter(enum viafb_i2c_adap which);
0025
0026 extern int viafb_i2c_init(void);
0027 extern void viafb_i2c_exit(void);
0028 #endif /* __VIA_I2C_H__ */