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., 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 /* $Id: i2c-algo-pcf.h,v 1.7 2000/02/27 23:02:45 frodo Exp $ */
26
27 #ifndef I2C_ALGO_PCF_H
28 #define I2C_ALGO_PCF_H 1
29
30 /* --- Defines for pcf-adapters --------------------------------------- */
31 #include <linux/i2c.h>
32
33 struct i2c_algo_pcf_data {
34 void *data; /* private data for lolevel routines */
35 void (*setpcf) (void *data, int ctl, int val);
36 int (*getpcf) (void *data, int ctl);
37 int (*getown) (void *data);
38 int (*getclock) (void *data);
39 void (*waitforpin) (void);
40
41 /* local settings */
42 int udelay;
43 int mdelay;
44 int timeout;
45 };
46
47 #define I2C_PCF_ADAP_MAX 16
48
49 int i2c_pcf_add_bus(struct i2c_adapter *);
50 int i2c_pcf_del_bus(struct i2c_adapter *);
51
52 #endif /* I2C_ALGO_PCF_H */
53
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