1 /* SPDX-License-Identifier: GPL-2.0-or-later * <<
2 /* ------------------------------------------- 1 /* ------------------------------------------------------------------------- */
3 /* adap-pcf.h i2c driver algorithms for PCF858 2 /* adap-pcf.h i2c driver algorithms for PCF8584 adapters */
4 /* ------------------------------------------- 3 /* ------------------------------------------------------------------------- */
5 /* Copyright (C) 1995-97 Simon G. Vogl 4 /* Copyright (C) 1995-97 Simon G. Vogl
6 1998-99 Hans Berglund 5 1998-99 Hans Berglund
7 6
8 */ !! 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. */
9 /* ------------------------------------------- 20 /* ------------------------------------------------------------------------- */
10 21
11 /* With some changes from Kyösti Mälkki <kma 22 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
12 Frodo Looijaard <frodol@dds.nl> */ 23 Frodo Looijaard <frodol@dds.nl> */
13 24
14 #ifndef _LINUX_I2C_ALGO_PCF_H 25 #ifndef _LINUX_I2C_ALGO_PCF_H
15 #define _LINUX_I2C_ALGO_PCF_H 26 #define _LINUX_I2C_ALGO_PCF_H
16 27
17 struct i2c_algo_pcf_data { 28 struct i2c_algo_pcf_data {
18 void *data; /* private dat 29 void *data; /* private data for lolevel routines */
19 void (*setpcf) (void *data, int ctl, i 30 void (*setpcf) (void *data, int ctl, int val);
20 int (*getpcf) (void *data, int ctl); 31 int (*getpcf) (void *data, int ctl);
21 int (*getown) (void *data); 32 int (*getown) (void *data);
22 int (*getclock) (void *data); 33 int (*getclock) (void *data);
23 void (*waitforpin) (void *data); 34 void (*waitforpin) (void *data);
24 35
25 void (*xfer_begin) (void *data); 36 void (*xfer_begin) (void *data);
26 void (*xfer_end) (void *data); 37 void (*xfer_end) (void *data);
27 38
28 /* Multi-master lost arbitration back- 39 /* Multi-master lost arbitration back-off delay (msecs)
29 * This should be set by the bus adapt 40 * This should be set by the bus adapter or knowledgable client
30 * if bus is multi-mastered, else zero 41 * if bus is multi-mastered, else zero
31 */ 42 */
32 unsigned long lab_mdelay; 43 unsigned long lab_mdelay;
33 }; 44 };
34 45
35 int i2c_pcf_add_bus(struct i2c_adapter *); 46 int i2c_pcf_add_bus(struct i2c_adapter *);
36 47
37 #endif /* _LINUX_I2C_ALGO_PCF_H */ 48 #endif /* _LINUX_I2C_ALGO_PCF_H */
38 49
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