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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* ------------------------------------------------------------------------- */
2/* adap-pcf.h i2c driver algorithms for PCF8584 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
John Anthony Kazos Jr121e70b2007-05-09 08:30:57 +020022/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 Frodo Looijaard <frodol@dds.nl> */
24
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#ifndef _LINUX_I2C_ALGO_PCF_H
26#define _LINUX_I2C_ALGO_PCF_H
27
28struct i2c_algo_pcf_data {
29 void *data; /* private data for lolevel routines */
30 void (*setpcf) (void *data, int ctl, int val);
31 int (*getpcf) (void *data, int ctl);
32 int (*getown) (void *data);
33 int (*getclock) (void *data);
David Brownell438d6c22006-12-10 21:21:31 +010034 void (*waitforpin) (void);
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
Eric Brower0573d112008-07-14 22:38:31 +020036 /* Multi-master lost arbitration back-off delay (msecs)
37 * This should be set by the bus adapter or knowledgable client
38 * if bus is multi-mastered, else zero
39 */
40 unsigned long lab_mdelay;
Linus Torvalds1da177e2005-04-16 15:20:36 -070041};
42
Linus Torvalds1da177e2005-04-16 15:20:36 -070043int i2c_pcf_add_bus(struct i2c_adapter *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
45#endif /* _LINUX_I2C_ALGO_PCF_H */