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1/* ------------------------------------------------------------------------- */
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., 51 Franklin Street, Fifth Floor, Boston,
20 MA 02110-1301 USA. */
21/* ------------------------------------------------------------------------- */
22
23/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
24 Frodo Looijaard <frodol@dds.nl> */
25
26#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);
35 void (*waitforpin) (void *data);
36
37 void (*xfer_begin) (void *data);
38 void (*xfer_end) (void *data);
39
40 /* 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;
45};
46
47int i2c_pcf_add_bus(struct i2c_adapter *);
48
49#endif /* _LINUX_I2C_ALGO_PCF_H */
50

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