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/* SPDX-License-Identifier: GPL-2.0-or-later */
* tmon.h contains data structures and constants used by TMON
* Copyright (C) 2012 Intel Corporation. All rights reserved.
* Author Name Jacob Pan <>
#ifndef TMON_H
#define TMON_H
#define MAX_DISP_TEMP 125
#define MAX_CTRL_TEMP 105
#define MIN_CTRL_TEMP 40
#define MAX_NR_TZONE 16
#define MAX_NR_CDEV 32
#define MAX_NR_TRIP 16
#define MAX_NR_CDEV_TRIP 12 /* number of cooling devices that can bind
* to a thermal zone trip.
#define MAX_TEMP_KC 140000
/* starting char position to draw sensor data, such as tz names
* trip point list, etc.
#define DATA_LEFT_ALIGN 10
#define TMON_LOG_FILE "/var/tmp/tmon.log"
extern unsigned long ticktime;
extern double time_elapsed;
extern unsigned long target_temp_user;
extern int dialogue_on;
extern char ctrl_cdev[];
extern pthread_mutex_t input_lock;
extern int tmon_exit;
extern int target_thermal_zone;
/* use fixed size record to simplify data processing and transfer
* TBD: more info to be added, e.g. programmable trip point data.
struct thermal_data_record {
struct timeval tv;
unsigned long temp[MAX_NR_TZONE];
double pid_out_pct;
struct cdev_info {
char type[64];
int instance;
unsigned long max_state;
unsigned long cur_state;
unsigned long flag;
enum trip_type {
struct trip_point {
enum trip_type type;
unsigned long temp;
unsigned long hysteresis;
int attribute; /* programmability etc. */
/* thermal zone configuration information, binding with cooling devices could
* change at runtime.
struct tz_info {
char type[256]; /* e.g. acpitz */
int instance;
int passive; /* active zone has passive node to force passive mode */
int nr_cdev; /* number of cooling device binded */
int nr_trip_pts;
struct trip_point tp[MAX_NR_TRIP];
unsigned long cdev_binding; /* bitmap for attached cdevs */
/* cdev bind trip points, allow one cdev bind to multiple trips */
unsigned long trip_binding[MAX_NR_CDEV];
struct tmon_platform_data {
int nr_tz_sensor;
int nr_cooling_dev;
/* keep track of instance ids since there might be gaps */
int max_tz_instance;
int max_cdev_instance;
struct tz_info *tzi;
struct cdev_info *cdi;
struct control_ops {
void (*set_ratio)(unsigned long ratio);
unsigned long (*get_ratio)(unsigned long ratio);
enum cdev_types {
/* REVISIT: the idea is to group sensors if possible, e.g. on intel mid
* we have "skin0", "skin1", "sys", "msicdie"
* on DPTF enabled systems, we might have PCH, TSKN, TAMB, etc.
enum tzone_types {
/* limit the output of PID controller adjustment */
#define LIMIT_HIGH (95)
#define LIMIT_LOW (2)
struct pid_params {
double kp; /* Controller gain from Dialog Box */
double ki; /* Time-constant for I action from Dialog Box */
double kd; /* Time-constant for D action from Dialog Box */
double ts;
double k_lpf;
double t_target;
double y_k;
extern int init_thermal_controller(void);
extern void controller_handler(const double xk, double *yk);
extern struct tmon_platform_data ptdata;
extern struct pid_params p_param;
extern FILE *tmon_log;
extern int cur_thermal_record; /* index to the trec array */
extern struct thermal_data_record trec[];
extern const char *trip_type_name[];
extern unsigned long no_control;
extern void initialize_curses(void);
extern void show_controller_stats(char *line);
extern void show_title_bar(void);
extern void setup_windows(void);
extern void disable_tui(void);
extern void show_sensors_w(void);
extern void show_data_w(void);
extern void write_status_bar(int x, char *line);
extern void show_control_w();
extern void show_cooling_device(void);
extern void show_dialogue(void);
extern int update_thermal_data(void);
extern int probe_thermal_sysfs(void);
extern void free_thermal_data(void);
extern void resize_handler(int sig);
extern void set_ctrl_state(unsigned long state);
extern void get_ctrl_state(unsigned long *state);
extern void *handle_tui_events(void *arg);
extern int sysfs_set_ulong(char *path, char *filename, unsigned long val);
extern int zone_instance_to_index(int zone_inst);
extern void close_windows(void);
#define PT_COLOR_ERROR 3
#define PT_COLOR_RED 4
#define PT_COLOR_GREEN 6
#define PT_COLOR_BLUE 8
/* each thermal zone uses 12 chars, 8 for name, 2 for instance, 2 space
* also used to list trip points in forms of AAAC, which represents
* A: Active
* C: Critical
#define TZ_LEFT_ALIGN 32
#define CDEV_NAME_SIZE 20
#define CDEV_FLAG_IN_CONTROL (1 << 0)
/* dialogue box starts */
#define DIAG_X 48
#define DIAG_Y 8
#define THERMAL_SYSFS "/sys/class/thermal"
#define CDEV "cooling_device"
#define TZONE "thermal_zone"
#define TDATA_LEFT 16
#endif /* TMON_H */