include/linux/i2c-algo-pcf.h

   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., 675 Mass Ave, Cambridge, MA 02139, USA.                */
  20 /* ------------------------------------------------------------------------- */
  21
  22 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
  23    Frodo Looijaard <frodol@dds.nl> */
  24
  25 /* $Id: i2c-algo-pcf.h,v 1.8 2003/01/21 08:08:16 kmalkki Exp $ */
  26
  27 #ifndef _LINUX_I2C_ALGO_PCF_H
  28 #define _LINUX_I2C_ALGO_PCF_H
  29
  30 struct i2c_algo_pcf_data {
  31         void *data;             /* private data for lolevel routines    */
  32         void (*setpcf) (void *data, int ctl, int val);
  33         int  (*getpcf) (void *data, int ctl);
  34         int  (*getown) (void *data);
  35         int  (*getclock) (void *data);
  36         void (*waitforpin) (void);
  37
  38         /* local settings */
  39         int udelay;
  40         int mdelay;
  41         int timeout;
  42 };
  43
  44 #define I2C_PCF_ADAP_MAX        16
  45
  46 int i2c_pcf_add_bus(struct i2c_adapter *);
  47 int i2c_pcf_del_bus(struct i2c_adapter *);
  48
  49 #endif /* _LINUX_I2C_ALGO_PCF_H */