include/dtt.h

   1 /*
   2  * (C) Copyright 2001
   3  * Erik Theisen,  Wave 7 Optics, etheisen@mindspring.com.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  * Digital Thermometers and Thermostats.
  26  */
  27 #ifndef _DTT_H_
  28 #define _DTT_H_
  29
  30 #if defined(CONFIG_DTT_ADM1021) || \
  31     defined(CONFIG_DTT_ADT7460) || \
  32     defined(CONFIG_DTT_DS1621)  || \
  33     defined(CONFIG_DTT_DS1775)  || \
  34     defined(CONFIG_DTT_LM73)    || \
  35     defined(CONFIG_DTT_LM75)    || \
  36     defined(CONFIG_DTT_LM81)
  37
  38 #define CONFIG_DTT                              /* We have a DTT */
  39
  40 #ifndef CONFIG_DTT_ADM1021
  41 #define DTT_COMMERCIAL_MAX_TEMP 70              /* 0 - +70 C */
  42 #define DTT_INDUSTRIAL_MAX_TEMP 85              /* -40 - +85 C */
  43 #define DTT_AUTOMOTIVE_MAX_TEMP 105             /* -40 - +105 C */
  44
  45 #ifndef CFG_DTT_MAX_TEMP
  46 #define CFG_DTT_MAX_TEMP DTT_COMMERCIAL_MAX_TEMP
  47 #endif
  48
  49 #ifndef CFG_DTT_HYSTERESIS
  50 #define CFG_DTT_HYSTERESIS      5               /* 5 C */
  51 #endif
  52 #endif /* CONFIG_DTT_ADM1021 */
  53
  54 extern int dtt_init (void);
  55 extern int dtt_read(int sensor, int reg);
  56 extern int dtt_write(int sensor, int reg, int val);
  57 extern int dtt_get_temp(int sensor);
  58 #endif
  59
  60 #endif /* _DTT_H_ */