drivers/staging/omap-thermal/omap-thermal.h

   1 /*
   2  * OMAP thermal definitions
   3  *
   4  * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
   5  * Contact:
   6  *   Eduardo Valentin <eduardo.valentin@ti.com>
   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
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * 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 St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23 #ifndef __OMAP_THERMAL_H
  24 #define __OMAP_THERMAL_H
  25
  26 #include "omap-bandgap.h"
  27
  28 /* sensors gradient and offsets */
  29 #define OMAP_GRADIENT_SLOPE_4460                                348
  30 #define OMAP_GRADIENT_CONST_4460                                -9301
  31 #define OMAP_GRADIENT_SLOPE_4470                                308
  32 #define OMAP_GRADIENT_CONST_4470                                -7896
  33
  34 #define OMAP_GRADIENT_SLOPE_5430_CPU                            196
  35 #define OMAP_GRADIENT_CONST_5430_CPU                            -6822
  36 #define OMAP_GRADIENT_SLOPE_5430_GPU                            64
  37 #define OMAP_GRADIENT_CONST_5430_GPU                            978
  38
  39 /* PCB sensor calculation constants */
  40 #define OMAP_GRADIENT_SLOPE_W_PCB_4460                          1142
  41 #define OMAP_GRADIENT_CONST_W_PCB_4460                          -393
  42 #define OMAP_GRADIENT_SLOPE_W_PCB_4470                          1063
  43 #define OMAP_GRADIENT_CONST_W_PCB_4470                          -477
  44
  45 #define OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU                      469
  46 #define OMAP_GRADIENT_CONST_W_PCB_5430_CPU                      -1272
  47 #define OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU                      378
  48 #define OMAP_GRADIENT_CONST_W_PCB_5430_GPU                      154
  49
  50 /* trip points of interest in milicelsius (at hotspot level) */
  51 #define OMAP_TRIP_COLD                                          100000
  52 #define OMAP_TRIP_HOT                                           110000
  53 #define OMAP_TRIP_SHUTDOWN                                      125000
  54 #define OMAP_TRIP_NUMBER                                        2
  55 #define OMAP_TRIP_STEP                                                  \
  56         ((OMAP_TRIP_SHUTDOWN - OMAP_TRIP_HOT) / (OMAP_TRIP_NUMBER - 1))
  57
  58 /* Update rates */
  59 #define FAST_TEMP_MONITORING_RATE                               250
  60
  61 /* helper macros */
  62 /**
  63  * omap_thermal_get_trip_value - returns trip temperature based on index
  64  * @i:  trip index
  65  */
  66 #define omap_thermal_get_trip_value(i)                                  \
  67         (OMAP_TRIP_HOT + ((i) * OMAP_TRIP_STEP))
  68
  69 /**
  70  * omap_thermal_is_valid_trip - check for trip index
  71  * @i:  trip index
  72  */
  73 #define omap_thermal_is_valid_trip(trip)                                \
  74         ((trip) >= 0 && (trip) < OMAP_TRIP_NUMBER)
  75
  76 #ifdef CONFIG_OMAP_THERMAL
  77 int omap_thermal_expose_sensor(struct omap_bandgap *bgp, int id,
  78                                char *domain);
  79 int omap_thermal_remove_sensor(struct omap_bandgap *bgp, int id);
  80 int omap_thermal_register_cpu_cooling(struct omap_bandgap *bgp, int id);
  81 int omap_thermal_unregister_cpu_cooling(struct omap_bandgap *bgp, int id);
  82 #else
  83 static inline
  84 int omap_thermal_expose_sensor(struct omap_bandgap *bgp, int id,
  85                                char *domain)
  86 {
  87         return 0;
  88 }
  89
  90 static inline
  91 int omap_thermal_remove_sensor(struct omap_bandgap *bgp, int id)
  92 {
  93         return 0;
  94 }
  95
  96 static inline
  97 int omap_thermal_register_cpu_cooling(struct omap_bandgap *bgp, int id)
  98 {
  99         return 0;
 100 }
 101
 102 static inline
 103 int omap_thermal_unregister_cpu_cooling(struct omap_bandgap *bgp, int id)
 104 {
 105         return 0;
 106 }
 107 #endif
 108 #endif