/* SPDX-License-Identifier: GPL-2.0 */ /* * Definitions for talking to the PMU. The PMU is a microcontroller * which controls battery charging and system power on PowerBook 3400 * and 2400 models as well as the RTC and various other things. * * Copyright (C) 1998 Paul Mackerras. */ #ifndef _LINUX_PMU_H #define _LINUX_PMU_H #include <linux/rtc.h> #include <uapi/linux/pmu.h> extern int find_via_pmu(void); extern int pmu_request(struct adb_request *req, void (*done)(struct adb_request *), int nbytes, ...); extern int pmu_queue_request(struct adb_request *req); extern void pmu_poll(void); extern void pmu_poll_adb(void); /* For use by xmon */ extern void pmu_wait_complete(struct adb_request *req); /* For use before switching interrupts off for a long time; * warning: not stackable */ #if defined(CONFIG_ADB_PMU) extern void pmu_suspend(void); extern void pmu_resume(void); #else static inline void pmu_suspend(void) {} static inline void pmu_resume(void) {} #endif extern void pmu_enable_irled(int on); extern time64_t pmu_get_time(void); extern int pmu_set_rtc_time(struct rtc_time *tm); extern void pmu_restart(void); extern void pmu_shutdown(void); extern void pmu_unlock(void); extern int pmu_present(void); extern int pmu_get_model(void); extern void pmu_backlight_set_sleep(int sleep); #define PMU_MAX_BATTERIES 2 /* values for pmu_power_flags */ #define PMU_PWR_AC_PRESENT 0x00000001 /* values for pmu_battery_info.flags */ #define PMU_BATT_PRESENT 0x00000001 #define PMU_BATT_CHARGING 0x00000002 #define PMU_BATT_TYPE_MASK 0x000000f0 #define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */ #define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */ #define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */ struct pmu_battery_info { unsigned int flags; unsigned int charge; /* current charge */ unsigned int max_charge; /* maximum charge */ signed int amperage; /* current, positive if charging */ unsigned int voltage; /* voltage */ unsigned int time_remaining; /* remaining time */ }; extern int pmu_battery_count; extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; extern unsigned int pmu_power_flags; /* Backlight */ extern void pmu_backlight_init(void); /* some code needs to know if the PMU was suspended for hibernation */ #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) extern int pmu_sys_suspended; #else /* if power management is not configured it can't be suspended */ #define pmu_sys_suspended 0 #endif #endif /* _LINUX_PMU_H */