drivers/thermal/samsung/exynos_thermal_common.h

   1 /*
   2  * exynos_thermal_common.h - Samsung EXYNOS common header file
   3  *
   4  *  Copyright (C) 2013 Samsung Electronics
   5  *  Amit Daniel Kachhap <amit.daniel@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  */
  22
  23 #ifndef _EXYNOS_THERMAL_COMMON_H
  24 #define _EXYNOS_THERMAL_COMMON_H
  25
  26 /* In-kernel thermal framework related macros & definations */
  27 #define SENSOR_NAME_LEN 16
  28 #define MAX_TRIP_COUNT  8
  29 #define MAX_COOLING_DEVICE 4
  30 #define MAX_THRESHOLD_LEVS 5
  31
  32 #define ACTIVE_INTERVAL 500
  33 #define IDLE_INTERVAL 10000
  34 #define MCELSIUS        1000
  35
  36 /* CPU Zone information */
  37 #define PANIC_ZONE      4
  38 #define WARN_ZONE       3
  39 #define MONITOR_ZONE    2
  40 #define SAFE_ZONE       1
  41
  42 #define GET_ZONE(trip) (trip + 2)
  43 #define GET_TRIP(zone) (zone - 2)
  44
  45 enum trigger_type {
  46         THROTTLE_ACTIVE = 1,
  47         THROTTLE_PASSIVE,
  48         SW_TRIP,
  49         HW_TRIP,
  50 };
  51
  52 /**
  53  * struct freq_clip_table
  54  * @freq_clip_max: maximum frequency allowed for this cooling state.
  55  * @temp_level: Temperature level at which the temperature clipping will
  56  *      happen.
  57  * @mask_val: cpumask of the allowed cpu's where the clipping will take place.
  58  *
  59  * This structure is required to be filled and passed to the
  60  * cpufreq_cooling_unregister function.
  61  */
  62 struct freq_clip_table {
  63         unsigned int freq_clip_max;
  64         unsigned int temp_level;
  65         const struct cpumask *mask_val;
  66 };
  67
  68 struct  thermal_trip_point_conf {
  69         int trip_val[MAX_TRIP_COUNT];
  70         int trip_type[MAX_TRIP_COUNT];
  71         int trip_count;
  72         unsigned char trigger_falling;
  73 };
  74
  75 struct  thermal_cooling_conf {
  76         struct freq_clip_table freq_data[MAX_TRIP_COUNT];
  77         int freq_clip_count;
  78 };
  79
  80 struct thermal_sensor_conf {
  81         char name[SENSOR_NAME_LEN];
  82         int (*read_temperature)(void *data);
  83         int (*write_emul_temp)(void *drv_data, unsigned long temp);
  84         struct thermal_trip_point_conf trip_data;
  85         struct thermal_cooling_conf cooling_data;
  86         void *driver_data;
  87         void *pzone_data;
  88         struct device *dev;
  89 };
  90
  91 /*Functions used exynos based thermal sensor driver*/
  92 #ifdef CONFIG_EXYNOS_THERMAL_CORE
  93 void exynos_unregister_thermal(struct thermal_sensor_conf *sensor_conf);
  94 int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf);
  95 void exynos_report_trigger(struct thermal_sensor_conf *sensor_conf);
  96 #else
  97 static inline void
  98 exynos_unregister_thermal(struct thermal_sensor_conf *sensor_conf) { return; }
  99
 100 static inline int
 101 exynos_register_thermal(struct thermal_sensor_conf *sensor_conf) { return 0; }
 102
 103 static inline void
 104 exynos_report_trigger(struct thermal_sensor_conf *sensor_conf) { return; }
 105
 106 #endif /* CONFIG_EXYNOS_THERMAL_CORE */
 107 #endif /* _EXYNOS_THERMAL_COMMON_H */