drivers/thermal/ti-soc-thermal/ti-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 __TI_THERMAL_H
  24 #define __TI_THERMAL_H
  25
  26 #include "ti-bandgap.h"
  27
  28 /* PCB sensor calculation constants */
  29 #define OMAP_GRADIENT_SLOPE_W_PCB_4430                          0
  30 #define OMAP_GRADIENT_CONST_W_PCB_4430                          20000
  31 #define OMAP_GRADIENT_SLOPE_W_PCB_4460                          1142
  32 #define OMAP_GRADIENT_CONST_W_PCB_4460                          -393
  33 #define OMAP_GRADIENT_SLOPE_W_PCB_4470                          1063
  34 #define OMAP_GRADIENT_CONST_W_PCB_4470                          -477
  35
  36 #define OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU                      100
  37 #define OMAP_GRADIENT_CONST_W_PCB_5430_CPU                      484
  38 #define OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU                      464
  39 #define OMAP_GRADIENT_CONST_W_PCB_5430_GPU                      -5102
  40
  41 #define DRA752_GRADIENT_SLOPE_W_PCB                             0
  42 #define DRA752_GRADIENT_CONST_W_PCB                             2000
  43
  44 /* trip points of interest in milicelsius (at hotspot level) */
  45 #define OMAP_TRIP_COLD                                          100000
  46 #define OMAP_TRIP_HOT                                           110000
  47 #define OMAP_TRIP_SHUTDOWN                                      125000
  48 #define OMAP_TRIP_NUMBER                                        2
  49 #define OMAP_TRIP_STEP                                                  \
  50         ((OMAP_TRIP_SHUTDOWN - OMAP_TRIP_HOT) / (OMAP_TRIP_NUMBER - 1))
  51
  52 /* Update rates */
  53 #define FAST_TEMP_MONITORING_RATE                               250
  54
  55 /* helper macros */
  56 /**
  57  * ti_thermal_get_trip_value - returns trip temperature based on index
  58  * @i:  trip index
  59  */
  60 #define ti_thermal_get_trip_value(i)                                    \
  61         (OMAP_TRIP_HOT + ((i) * OMAP_TRIP_STEP))
  62
  63 /**
  64  * ti_thermal_is_valid_trip - check for trip index
  65  * @i:  trip index
  66  */
  67 #define ti_thermal_is_valid_trip(trip)                          \
  68         ((trip) >= 0 && (trip) < OMAP_TRIP_NUMBER)
  69
  70 #ifdef CONFIG_TI_THERMAL
  71 int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id, char *domain);
  72 int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id);
  73 int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id);
  74 int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id);
  75 int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id);
  76 #else
  77 static inline
  78 int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id, char *domain)
  79 {
  80         return 0;
  81 }
  82
  83 static inline
  84 int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id)
  85 {
  86         return 0;
  87 }
  88
  89 static inline
  90 int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id)
  91 {
  92         return 0;
  93 }
  94
  95 static inline
  96 int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id)
  97 {
  98         return 0;
  99 }
 100
 101 static inline
 102 int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id)
 103 {
 104         return 0;
 105 }
 106 #endif
 107 #endif