Current File : //usr/src/kernels/3.10.0-957.21.3.el7.centos.plus.x86_64/include/linux/platform_data/exynos_thermal.h
/*
* exynos_thermal.h - Samsung EXYNOS TMU (Thermal Management Unit)
*
* Copyright (C) 2011 Samsung Electronics
* Donggeun Kim <dg77.kim@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _LINUX_EXYNOS_THERMAL_H
#define _LINUX_EXYNOS_THERMAL_H
#include <linux/cpu_cooling.h>
enum calibration_type {
TYPE_ONE_POINT_TRIMMING,
TYPE_TWO_POINT_TRIMMING,
TYPE_NONE,
};
enum soc_type {
SOC_ARCH_EXYNOS4210 = 1,
SOC_ARCH_EXYNOS,
};
/**
* struct freq_clip_table
* @freq_clip_max: maximum frequency allowed for this cooling state.
* @temp_level: Temperature level at which the temperature clipping will
* happen.
* @mask_val: cpumask of the allowed cpu's where the clipping will take place.
*
* This structure is required to be filled and passed to the
* cpufreq_cooling_unregister function.
*/
struct freq_clip_table {
unsigned int freq_clip_max;
unsigned int temp_level;
const struct cpumask *mask_val;
};
/**
* struct exynos_tmu_platform_data
* @threshold: basic temperature for generating interrupt
* 25 <= threshold <= 125 [unit: degree Celsius]
* @threshold_falling: differntial value for setting threshold
* of temperature falling interrupt.
* @trigger_levels: array for each interrupt levels
* [unit: degree Celsius]
* 0: temperature for trigger_level0 interrupt
* condition for trigger_level0 interrupt:
* current temperature > threshold + trigger_levels[0]
* 1: temperature for trigger_level1 interrupt
* condition for trigger_level1 interrupt:
* current temperature > threshold + trigger_levels[1]
* 2: temperature for trigger_level2 interrupt
* condition for trigger_level2 interrupt:
* current temperature > threshold + trigger_levels[2]
* 3: temperature for trigger_level3 interrupt
* condition for trigger_level3 interrupt:
* current temperature > threshold + trigger_levels[3]
* @trigger_level0_en:
* 1 = enable trigger_level0 interrupt,
* 0 = disable trigger_level0 interrupt
* @trigger_level1_en:
* 1 = enable trigger_level1 interrupt,
* 0 = disable trigger_level1 interrupt
* @trigger_level2_en:
* 1 = enable trigger_level2 interrupt,
* 0 = disable trigger_level2 interrupt
* @trigger_level3_en:
* 1 = enable trigger_level3 interrupt,
* 0 = disable trigger_level3 interrupt
* @gain: gain of amplifier in the positive-TC generator block
* 0 <= gain <= 15
* @reference_voltage: reference voltage of amplifier
* in the positive-TC generator block
* 0 <= reference_voltage <= 31
* @noise_cancel_mode: noise cancellation mode
* 000, 100, 101, 110 and 111 can be different modes
* @type: determines the type of SOC
* @efuse_value: platform defined fuse value
* @cal_type: calibration type for temperature
* @freq_clip_table: Table representing frequency reduction percentage.
* @freq_tab_count: Count of the above table as frequency reduction may
* applicable to only some of the trigger levels.
*
* This structure is required for configuration of exynos_tmu driver.
*/
struct exynos_tmu_platform_data {
u8 threshold;
u8 threshold_falling;
u8 trigger_levels[4];
bool trigger_level0_en;
bool trigger_level1_en;
bool trigger_level2_en;
bool trigger_level3_en;
u8 gain;
u8 reference_voltage;
u8 noise_cancel_mode;
u32 efuse_value;
enum calibration_type cal_type;
enum soc_type type;
struct freq_clip_table freq_tab[4];
unsigned int freq_tab_count;
};
#endif /* _LINUX_EXYNOS_THERMAL_H */
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