drivers/thermal/samsung/exynos_tmu.h

   1 /*
   2  * exynos_tmu.h - Samsung EXYNOS TMU (Thermal Management Unit)
   3  *
   4  *  Copyright (C) 2011 Samsung Electronics
   5  *  Donggeun Kim <dg77.kim@samsung.com>
   6  *  Amit Daniel Kachhap <amit.daniel@samsung.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #ifndef _EXYNOS_TMU_H
  24 #define _EXYNOS_TMU_H
  25 #include <linux/cpu_cooling.h>
  26
  27 #include "exynos_thermal_common.h"
  28
  29 enum calibration_type {
  30         TYPE_ONE_POINT_TRIMMING,
  31         TYPE_ONE_POINT_TRIMMING_25,
  32         TYPE_ONE_POINT_TRIMMING_85,
  33         TYPE_TWO_POINT_TRIMMING,
  34         TYPE_NONE,
  35 };
  36
  37 enum soc_type {
  38         SOC_ARCH_EXYNOS3250 = 1,
  39         SOC_ARCH_EXYNOS4210,
  40         SOC_ARCH_EXYNOS4412,
  41         SOC_ARCH_EXYNOS5250,
  42         SOC_ARCH_EXYNOS5260,
  43         SOC_ARCH_EXYNOS5420,
  44         SOC_ARCH_EXYNOS5420_TRIMINFO,
  45         SOC_ARCH_EXYNOS5440,
  46 };
  47
  48 /**
  49  * struct exynos_tmu_platform_data
  50  * @threshold: basic temperature for generating interrupt
  51  *             25 <= threshold <= 125 [unit: degree Celsius]
  52  * @threshold_falling: differntial value for setting threshold
  53  *                     of temperature falling interrupt.
  54  * @trigger_levels: array for each interrupt levels
  55  *      [unit: degree Celsius]
  56  *      0: temperature for trigger_level0 interrupt
  57  *         condition for trigger_level0 interrupt:
  58  *              current temperature > threshold + trigger_levels[0]
  59  *      1: temperature for trigger_level1 interrupt
  60  *         condition for trigger_level1 interrupt:
  61  *              current temperature > threshold + trigger_levels[1]
  62  *      2: temperature for trigger_level2 interrupt
  63  *         condition for trigger_level2 interrupt:
  64  *              current temperature > threshold + trigger_levels[2]
  65  *      3: temperature for trigger_level3 interrupt
  66  *         condition for trigger_level3 interrupt:
  67  *              current temperature > threshold + trigger_levels[3]
  68  * @trigger_type: defines the type of trigger. Possible values are,
  69  *      THROTTLE_ACTIVE trigger type
  70  *      THROTTLE_PASSIVE trigger type
  71  *      SW_TRIP trigger type
  72  *      HW_TRIP
  73  * @trigger_enable[]: array to denote which trigger levels are enabled.
  74  *      1 = enable trigger_level[] interrupt,
  75  *      0 = disable trigger_level[] interrupt
  76  * @max_trigger_level: max trigger level supported by the TMU
  77  * @non_hw_trigger_levels: number of defined non-hardware trigger levels
  78  * @gain: gain of amplifier in the positive-TC generator block
  79  *      0 < gain <= 15
  80  * @reference_voltage: reference voltage of amplifier
  81  *      in the positive-TC generator block
  82  *      0 < reference_voltage <= 31
  83  * @noise_cancel_mode: noise cancellation mode
  84  *      000, 100, 101, 110 and 111 can be different modes
  85  * @type: determines the type of SOC
  86  * @efuse_value: platform defined fuse value
  87  * @min_efuse_value: minimum valid trimming data
  88  * @max_efuse_value: maximum valid trimming data
  89  * @first_point_trim: temp value of the first point trimming
  90  * @second_point_trim: temp value of the second point trimming
  91  * @default_temp_offset: default temperature offset in case of no trimming
  92  * @cal_type: calibration type for temperature
  93  * @freq_clip_table: Table representing frequency reduction percentage.
  94  * @freq_tab_count: Count of the above table as frequency reduction may
  95  *      applicable to only some of the trigger levels.
  96  *
  97  * This structure is required for configuration of exynos_tmu driver.
  98  */
  99 struct exynos_tmu_platform_data {
 100         u8 threshold;
 101         u8 threshold_falling;
 102         u8 trigger_levels[MAX_TRIP_COUNT];
 103         enum trigger_type trigger_type[MAX_TRIP_COUNT];
 104         bool trigger_enable[MAX_TRIP_COUNT];
 105         u8 max_trigger_level;
 106         u8 non_hw_trigger_levels;
 107         u8 gain;
 108         u8 reference_voltage;
 109         u8 noise_cancel_mode;
 110
 111         u32 efuse_value;
 112         u32 min_efuse_value;
 113         u32 max_efuse_value;
 114         u8 first_point_trim;
 115         u8 second_point_trim;
 116         u8 default_temp_offset;
 117
 118         enum calibration_type cal_type;
 119         enum soc_type type;
 120         struct freq_clip_table freq_tab[4];
 121         unsigned int freq_tab_count;
 122 };
 123
 124 /**
 125  * struct exynos_tmu_init_data
 126  * @tmu_count: number of TMU instances.
 127  * @tmu_data: platform data of all TMU instances.
 128  * This structure is required to store data for multi-instance exynos tmu
 129  * driver.
 130  */
 131 struct exynos_tmu_init_data {
 132         int tmu_count;
 133         struct exynos_tmu_platform_data tmu_data[];
 134 };
 135
 136 extern struct exynos_tmu_init_data const exynos3250_default_tmu_data;
 137 extern struct exynos_tmu_init_data const exynos4210_default_tmu_data;
 138 extern struct exynos_tmu_init_data const exynos4412_default_tmu_data;
 139 extern struct exynos_tmu_init_data const exynos5250_default_tmu_data;
 140 extern struct exynos_tmu_init_data const exynos5260_default_tmu_data;
 141 extern struct exynos_tmu_init_data const exynos5420_default_tmu_data;
 142 extern struct exynos_tmu_init_data const exynos5440_default_tmu_data;
 143
 144 #endif /* _EXYNOS_TMU_H */