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 Ky�sti M�lkki <kmalkki@cc.hut.fi> and even 23 Frodo Looijaard <frodol@dds.nl> */ 24 25 /* $Id: i2c-algo-pcf.h,v 1.7 2000/02/27 23:02:45 frodo Exp $ */ 26 27 #ifndef I2C_ALGO_PCF_H 28 #define I2C_ALGO_PCF_H 1 29 30 /* --- Defines for pcf-adapters --------------------------------------- */ 31 #include <linux/i2c.h> 32 33 struct i2c_algo_pcf_data { 34 void *data; /* private data for lolevel routines */ 35 void (*setpcf) (void *data, int ctl, int val); 36 int (*getpcf) (void *data, int ctl); 37 int (*getown) (void *data); 38 int (*getclock) (void *data); 39 void (*waitforpin) (void); 40 41 /* local settings */ 42 int udelay; 43 int mdelay; 44 int timeout; 45 }; 46 47 int i2c_pcf_add_bus(struct i2c_adapter *); 48 int i2c_pcf_del_bus(struct i2c_adapter *); 49 50 #endif /* I2C_ALGO_PCF_H */ 51