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/*
* This file is part of the coreboot project.
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
*
* 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; version 2 of the License.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* EXYNOS - Thermal Management Unit */
#ifndef CPU_SAMSUNG_EXYNOS5420_TMU_H
#define CPU_SAMSUNG_EXYNOS5420_TMU_H
struct tmu_reg {
unsigned triminfo;
unsigned rsvd1;
unsigned rsvd2;
unsigned rsvd3;
unsigned rsvd4;
unsigned triminfo_control;
unsigned rsvd5;
unsigned rsvd6;
unsigned tmu_control;
unsigned rsvd7;
unsigned tmu_status;
unsigned sampling_internal;
unsigned counter_value0;
unsigned counter_value1;
unsigned rsvd8;
unsigned rsvd9;
unsigned current_temp;
unsigned rsvd10;
unsigned rsvd11;
unsigned rsvd12;
unsigned threshold_temp_rise;
unsigned threshold_temp_fall;
unsigned rsvd13;
unsigned rsvd14;
unsigned past_temp3_0;
unsigned past_temp7_4;
unsigned past_temp11_8;
unsigned past_temp15_12;
unsigned inten;
unsigned intstat;
unsigned intclear;
unsigned rsvd15;
unsigned emul_con;
};
check_member(tmu_reg, emul_con, 0x80);
enum tmu_status_t {
TMU_STATUS_INIT = 0,
TMU_STATUS_NORMAL,
TMU_STATUS_WARNING,
TMU_STATUS_TRIPPED,
};
/* Temperature threshold values for various thermal events */
struct temperature_params {
/* minimum value in temperature code range */
unsigned int min_val;
/* maximum value in temperature code range */
unsigned int max_val;
/* temperature threshold to start warning */
unsigned int start_warning;
/* temperature threshold CPU tripping */
unsigned int start_tripping;
/* temperature threshold for HW tripping */
unsigned int hardware_tripping;
};
/* Pre-defined values and thresholds for calibration of current temperature */
struct tmu_data {
/* pre-defined temperature thresholds */
struct temperature_params ts;
/* pre-defined efuse range minimum value */
unsigned int efuse_min_value;
/* pre-defined efuse value for temperature calibration */
unsigned int efuse_value;
/* pre-defined efuse range maximum value */
unsigned int efuse_max_value;
/* current temperature sensing slope */
unsigned int slope;
};
/* TMU device specific details and status */
struct tmu_info {
/* base Address for the TMU */
unsigned tmu_base;
/* mux Address for the TMU */
int tmu_mux;
/* pre-defined values for calibration and thresholds */
struct tmu_data data;
/* value required for triminfo_25 calibration */
unsigned int te1;
/* value required for triminfo_85 calibration */
unsigned int te2;
/* TMU DC value for threshold calculation */
int dc_value;
/* enum value indicating status of the TMU */
int tmu_state;
};
extern struct tmu_info *tmu_info;
/*
* Monitors status of the TMU device and exynos temperature
*
* @info pointer to TMU info struct
* @temp pointer to the current temperature value
* @return enum tmu_status_t value, code indicating event to execute
* and -1 on error
*/
enum tmu_status_t tmu_monitor(struct tmu_info *info, int *temp);
/*
* Initialize TMU device
*
* @info pointer to TMU info struct
* @return int value, 0 for success
*/
int tmu_init(struct tmu_info *info);
#endif /* CPU_SAMSUNG_EXYNOS5420_TMU_H */
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