tmu.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
/* EXYNOS - Thermal Management Unit */
 
#ifndef SOC_SAMSUNG_COMMON_INCLUDE_SOC_TMU_H
#define SOC_SAMSUNG_COMMON_INCLUDE_SOC_TMU_H
 
struct tmu_reg {
        unsigned int triminfo;
        unsigned int rsvd1;
        unsigned int rsvd2;
        unsigned int rsvd3;
        unsigned int rsvd4;
        unsigned int triminfo_control;
        unsigned int rsvd5;
        unsigned int rsvd6;
        unsigned int tmu_control;
        unsigned int rsvd7;
        unsigned int tmu_status;
        unsigned int sampling_internal;
        unsigned int counter_value0;
        unsigned int counter_value1;
        unsigned int rsvd8;
        unsigned int rsvd9;
        unsigned int current_temp;
        unsigned int rsvd10;
        unsigned int rsvd11;
        unsigned int rsvd12;
        unsigned int threshold_temp_rise;
        unsigned int threshold_temp_fall;
        unsigned int rsvd13;
        unsigned int rsvd14;
        unsigned int past_temp3_0;
        unsigned int past_temp7_4;
        unsigned int past_temp11_8;
        unsigned int past_temp15_12;
        unsigned int inten;
        unsigned int intstat;
        unsigned int intclear;
        unsigned int rsvd15;
        unsigned int 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 int 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  /* SOC_SAMSUNG_COMMON_INCLUDE_SOC_TMU_H */