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., 51 Franklin Street, Fifth Floor, Boston,
>> 20 MA 02110-1301 USA. */
9 /* ------------------------------------------- 21 /* ------------------------------------------------------------------------- */
10 22
11 /* With some changes from Kyösti Mälkki <kma 23 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
12 Frodo Looijaard <frodol@dds.nl> */ 24 Frodo Looijaard <frodol@dds.nl> */
13 25
14 #ifndef _LINUX_I2C_ALGO_PCF_H 26 #ifndef _LINUX_I2C_ALGO_PCF_H
15 #define _LINUX_I2C_ALGO_PCF_H 27 #define _LINUX_I2C_ALGO_PCF_H
16 28
17 struct i2c_algo_pcf_data { 29 struct i2c_algo_pcf_data {
18 void *data; /* private dat 30 void *data; /* private data for lolevel routines */
19 void (*setpcf) (void *data, int ctl, i 31 void (*setpcf) (void *data, int ctl, int val);
20 int (*getpcf) (void *data, int ctl); 32 int (*getpcf) (void *data, int ctl);
21 int (*getown) (void *data); 33 int (*getown) (void *data);
22 int (*getclock) (void *data); 34 int (*getclock) (void *data);
23 void (*waitforpin) (void *data); 35 void (*waitforpin) (void *data);
24 36
25 void (*xfer_begin) (void *data); 37 void (*xfer_begin) (void *data);
26 void (*xfer_end) (void *data); 38 void (*xfer_end) (void *data);
27 39
28 /* Multi-master lost arbitration back- 40 /* Multi-master lost arbitration back-off delay (msecs)
29 * This should be set by the bus adapt 41 * This should be set by the bus adapter or knowledgable client
30 * if bus is multi-mastered, else zero 42 * if bus is multi-mastered, else zero
31 */ 43 */
32 unsigned long lab_mdelay; 44 unsigned long lab_mdelay;
33 }; 45 };
34 46
35 int i2c_pcf_add_bus(struct i2c_adapter *); 47 int i2c_pcf_add_bus(struct i2c_adapter *);
36 48
37 #endif /* _LINUX_I2C_ALGO_PCF_H */ 49 #endif /* _LINUX_I2C_ALGO_PCF_H */
38 50
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