include/dtt.h

   1 /*
   2  * (C) Copyright 2001
   3  * Erik Theisen,  Wave 7 Optics, etheisen@mindspring.com.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /*
   9  * Digital Thermometers and Thermostats.
  10  */
  11 #ifndef _DTT_H_
  12 #define _DTT_H_
  13
  14 #if defined(CONFIG_DTT_ADM1021) || \
  15         defined(CONFIG_DTT_ADT7460)     || \
  16         defined(CONFIG_DTT_DS1621)      || \
  17         defined(CONFIG_DTT_DS1775)      || \
  18         defined(CONFIG_DTT_DS620)       || \
  19         defined(CONFIG_DTT_LM63)        || \
  20         defined(CONFIG_DTT_LM73)        || \
  21         defined(CONFIG_DTT_LM75)        || \
  22         defined(CONFIG_DTT_LM81)
  23
  24 #define CONFIG_DTT                              /* We have a DTT */
  25
  26 #ifndef CONFIG_DTT_ADM1021
  27 #define DTT_COMMERCIAL_MAX_TEMP 70              /* 0 - +70 C */
  28 #define DTT_INDUSTRIAL_MAX_TEMP 85              /* -40 - +85 C */
  29 #define DTT_AUTOMOTIVE_MAX_TEMP 105             /* -40 - +105 C */
  30
  31 #ifndef CONFIG_SYS_DTT_MAX_TEMP
  32 #define CONFIG_SYS_DTT_MAX_TEMP DTT_COMMERCIAL_MAX_TEMP
  33 #endif
  34
  35 #ifndef CONFIG_SYS_DTT_HYSTERESIS
  36 #define CONFIG_SYS_DTT_HYSTERESIS       5               /* 5 C */
  37 #endif
  38 #endif /* CONFIG_DTT_ADM1021 */
  39
  40 extern void dtt_init(void);
  41 extern int dtt_init_one(int);
  42 extern int dtt_read(int sensor, int reg);
  43 extern int dtt_write(int sensor, int reg, int val);
  44 extern int dtt_get_temp(int sensor);
  45 #endif
  46
  47 #endif /* _DTT_H_ */