qmk-firmware/tmk_core/common/suspend.h

#ifndef SUSPEND_H
#define SUSPEND_H

#include <stdint.h>
#include <stdbool.h>

void suspend_idle(uint8_t timeout);
void suspend_power_down(void);
bool suspend_wakeup_condition(void);
void suspend_wakeup_init(void);

void suspend_wakeup_init_user(void);
void suspend_wakeup_init_kb(void);
void suspend_power_down_user(void);
void suspend_power_down_kb(void);

#endif