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