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 /* sensors gradient and offsets */
  29 #define OMAP_GRADIENT_SLOPE_4430                                0
  30 #define OMAP_GRADIENT_CONST_4430                                20000
  31 #define OMAP_GRADIENT_SLOPE_4460                                348
  32 #define OMAP_GRADIENT_CONST_4460                                -9301
  33 #define OMAP_GRADIENT_SLOPE_4470                                308
  34 #define OMAP_GRADIENT_CONST_4470                                -7896
  35
  36 #define OMAP_GRADIENT_SLOPE_5430_CPU                            65
  37 #define OMAP_GRADIENT_CONST_5430_CPU                            -1791
  38 #define OMAP_GRADIENT_SLOPE_5430_GPU                            117
  39 #define OMAP_GRADIENT_CONST_5430_GPU                            -2992
  40
  41 #define DRA752_GRADIENT_SLOPE                                   0
  42 #define DRA752_GRADIENT_CONST                                   2000
  43
  44 /* PCB sensor calculation constants */
  45 #define OMAP_GRADIENT_SLOPE_W_PCB_4430                          0
  46 #define OMAP_GRADIENT_CONST_W_PCB_4430                          20000
  47 #define OMAP_GRADIENT_SLOPE_W_PCB_4460                          1142
  48 #define OMAP_GRADIENT_CONST_W_PCB_4460                          -393
  49 #define OMAP_GRADIENT_SLOPE_W_PCB_4470                          1063
  50 #define OMAP_GRADIENT_CONST_W_PCB_4470                          -477
  51
  52 #define OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU                      100
  53 #define OMAP_GRADIENT_CONST_W_PCB_5430_CPU                      484
  54 #define OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU                      464
  55 #define OMAP_GRADIENT_CONST_W_PCB_5430_GPU                      -5102
  56
  57 #define DRA752_GRADIENT_SLOPE_W_PCB                             0
  58 #define DRA752_GRADIENT_CONST_W_PCB                             2000
  59
  60 /* trip points of interest in milicelsius (at hotspot level) */
  61 #define OMAP_TRIP_COLD                                          100000
  62 #define OMAP_TRIP_HOT                                           110000
  63 #define OMAP_TRIP_SHUTDOWN                                      125000
  64 #define OMAP_TRIP_NUMBER                                        2
  65 #define OMAP_TRIP_STEP                                                  \
  66         ((OMAP_TRIP_SHUTDOWN - OMAP_TRIP_HOT) / (OMAP_TRIP_NUMBER - 1))
  67
  68 /* Update rates */
  69 #define FAST_TEMP_MONITORING_RATE                               250
  70
  71 /* helper macros */
  72 /**
  73  * ti_thermal_get_trip_value - returns trip temperature based on index
  74  * @i:  trip index
  75  */
  76 #define ti_thermal_get_trip_value(i)                                    \
  77         (OMAP_TRIP_HOT + ((i) * OMAP_TRIP_STEP))
  78
  79 /**
  80  * ti_thermal_is_valid_trip - check for trip index
  81  * @i:  trip index
  82  */
  83 #define ti_thermal_is_valid_trip(trip)                          \
  84         ((trip) >= 0 && (trip) < OMAP_TRIP_NUMBER)
  85
  86 #ifdef CONFIG_TI_THERMAL
  87 int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id, char *domain);
  88 int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id);
  89 int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id);
  90 int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id);
  91 int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id);
  92 #else
  93 static inline
  94 int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id, char *domain)
  95 {
  96         return 0;
  97 }
  98
  99 static inline
 100 int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id)
 101 {
 102         return 0;
 103 }
 104
 105 static inline
 106 int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id)
 107 {
 108         return 0;
 109 }
 110
 111 static inline
 112 int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id)
 113 {
 114         return 0;
 115 }
 116
 117 static inline
 118 int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id)
 119 {
 120         return 0;
 121 }
 122 #endif
 123 #endif