blob: 0073fe96c76ea7b7f34e5e7b5c6b5ba695b42c32 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* ------------------------------------------------------------------------- */
2/* i2c-algo-ite.h i2c driver algorithms for ITE IIC adapters */
3/* ------------------------------------------------------------------------- */
4/* Copyright (C) 1995-97 Simon G. Vogl
5 1998-99 Hans Berglund
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
20/* ------------------------------------------------------------------------- */
21
22/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
23 Frodo Looijaard <frodol@dds.nl> */
24
25/* Modifications by MontaVista Software, 2001
26 Changes made to support the ITE IIC peripheral */
27
28
29#ifndef I2C_ALGO_ITE_H
30#define I2C_ALGO_ITE_H 1
31
David Woodhouse5a570cc2006-04-25 14:10:40 +010032#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
34/* Example of a sequential read request:
35 struct i2c_iic_msg s_msg;
36
37 s_msg.addr=device_address;
38 s_msg.len=length;
39 s_msg.buf=buffer;
40 s_msg.waddr=word_address;
41 ioctl(file,I2C_SREAD, &s_msg);
42 */
43#define I2C_SREAD 0x780 /* SREAD ioctl command */
44
45struct i2c_iic_msg {
46 __u16 addr; /* device address */
47 __u16 waddr; /* word address */
48 short len; /* msg length */
49 char *buf; /* pointer to msg data */
50};
51
David Woodhouse5a570cc2006-04-25 14:10:40 +010052#ifdef __KERNEL__
53struct i2c_adapter;
54
Linus Torvalds1da177e2005-04-16 15:20:36 -070055struct i2c_algo_iic_data {
56 void *data; /* private data for lolevel routines */
57 void (*setiic) (void *data, int ctl, int val);
58 int (*getiic) (void *data, int ctl);
59 int (*getown) (void *data);
60 int (*getclock) (void *data);
61 void (*waitforpin) (void);
62
63 /* local settings */
64 int udelay;
65 int mdelay;
66 int timeout;
67};
68
69int i2c_iic_add_bus(struct i2c_adapter *);
70int i2c_iic_del_bus(struct i2c_adapter *);
David Woodhouse5a570cc2006-04-25 14:10:40 +010071#endif /* __KERNEL__ */
Linus Torvalds1da177e2005-04-16 15:20:36 -070072#endif /* I2C_ALGO_ITE_H */