1/* ------------------------------------------------------------------------- */
2/* adap-pcf.h i2c driver algorithms for PCF8584 adapters                     */
3/* ------------------------------------------------------------------------- */
4/*   Copyright (C) 1995-97 Simon G. Vogl
5                   1998-99 Hans Berglund
6
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.							     */
21/* ------------------------------------------------------------------------- */
22
23/* With some changes from Ky��sti M��lkki <kmalkki@cc.hut.fi> and even
24   Frodo Looijaard <frodol@dds.nl> */
25
26#ifndef _LINUX_I2C_ALGO_PCF_H
27#define _LINUX_I2C_ALGO_PCF_H
28
29struct 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);
36
37	void (*xfer_begin) (void *data);
38	void (*xfer_end) (void *data);
39
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
43	 */
44	unsigned long lab_mdelay;
45};
46
47int i2c_pcf_add_bus(struct i2c_adapter *);
48
49#endif /* _LINUX_I2C_ALGO_PCF_H */
50