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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
Jean Delvare5694f8a2012-03-26 21:47:19 +020019 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
20 MA 02110-1301 USA. */
Linus Torvalds1da177e2005-04-16 15:20:36 -070021/* ------------------------------------------------------------------------- */
22
John Anthony Kazos Jr121e70b2007-05-09 08:30:57 +020023/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 Frodo Looijaard <frodol@dds.nl> */
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#ifndef _LINUX_I2C_ALGO_PCF_H
27#define _LINUX_I2C_ALGO_PCF_H
28
29struct i2c_algo_pcf_data {
30 void *data; /* private data for lolevel routines */
31 void (*setpcf) (void *data, int ctl, int val);
32 int (*getpcf) (void *data, int ctl);
33 int (*getown) (void *data);
34 int (*getclock) (void *data);
David Miller08e53382008-10-22 20:21:29 +020035 void (*waitforpin) (void *data);
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
David Miller30091402008-10-22 20:21:30 +020037 void (*xfer_begin) (void *data);
38 void (*xfer_end) (void *data);
39
Eric Brower0573d112008-07-14 22:38:31 +020040 /* Multi-master lost arbitration back-off delay (msecs)
41 * This should be set by the bus adapter or knowledgable client
42 * if bus is multi-mastered, else zero
43 */
44 unsigned long lab_mdelay;
Linus Torvalds1da177e2005-04-16 15:20:36 -070045};
46
Linus Torvalds1da177e2005-04-16 15:20:36 -070047int i2c_pcf_add_bus(struct i2c_adapter *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
49#endif /* _LINUX_I2C_ALGO_PCF_H */