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1 /* ------------------------------------------------------------------------- */
2 /* adap-pcf.h i2c driver algorithms for PCF8584 adapters */
3 /* ------------------------------------------------------------------------- */
4 /* Copyright (C) 1995-97 Simon G. Vogl
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.
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.
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,
21 /* ------------------------------------------------------------------------- */
23 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
24 Frodo Looijaard <frodol@dds.nl> */
26 #ifndef _LINUX_I2C_ALGO_PCF_H
27 #define _LINUX_I2C_ALGO_PCF_H
29 struct 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
);
37 void (*xfer_begin
) (void *data
);
38 void (*xfer_end
) (void *data
);
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
44 unsigned long lab_mdelay
;
47 int i2c_pcf_add_bus(struct i2c_adapter
*);
49 #endif /* _LINUX_I2C_ALGO_PCF_H */