1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* ------------------------------------------------------------------------- */
3/* adap-pcf.h i2c driver algorithms for PCF8584 adapters                     */
4/* ------------------------------------------------------------------------- */
5/*   Copyright (C) 1995-97 Simon G. Vogl
6                   1998-99 Hans Berglund
7
8 */
9/* ------------------------------------------------------------------------- */
10
11/* With some changes from Ky��sti M��lkki <kmalkki@cc.hut.fi> and even
12   Frodo Looijaard <frodol@dds.nl> */
13
14#ifndef _LINUX_I2C_ALGO_PCF_H
15#define _LINUX_I2C_ALGO_PCF_H
16
17struct i2c_algo_pcf_data {
18	void *data;		/* private data for lolevel routines	*/
19	void (*setpcf) (void *data, int ctl, int val);
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-off delay (msecs)
29	 * This should be set by the bus adapter or knowledgable client
30	 * if bus is multi-mastered, else zero
31	 */
32	unsigned long lab_mdelay;
33};
34
35int i2c_pcf_add_bus(struct i2c_adapter *);
36
37#endif /* _LINUX_I2C_ALGO_PCF_H */
38