pmu.h (2509B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Definitions for talking to the PMU. The PMU is a microcontroller 4 * which controls battery charging and system power on PowerBook 3400 5 * and 2400 models as well as the RTC and various other things. 6 * 7 * Copyright (C) 1998 Paul Mackerras. 8 */ 9#ifndef _LINUX_PMU_H 10#define _LINUX_PMU_H 11 12#include <linux/rtc.h> 13#include <uapi/linux/pmu.h> 14 15 16extern int __init find_via_pmu(void); 17 18extern int pmu_request(struct adb_request *req, 19 void (*done)(struct adb_request *), int nbytes, ...); 20extern int pmu_queue_request(struct adb_request *req); 21extern void pmu_poll(void); 22extern void pmu_poll_adb(void); /* For use by xmon */ 23extern void pmu_wait_complete(struct adb_request *req); 24 25/* For use before switching interrupts off for a long time; 26 * warning: not stackable 27 */ 28#if defined(CONFIG_ADB_PMU) 29extern void pmu_suspend(void); 30extern void pmu_resume(void); 31#else 32static inline void pmu_suspend(void) 33{} 34static inline void pmu_resume(void) 35{} 36#endif 37 38extern void pmu_enable_irled(int on); 39 40extern time64_t pmu_get_time(void); 41extern int pmu_set_rtc_time(struct rtc_time *tm); 42 43extern void pmu_restart(void); 44extern void pmu_shutdown(void); 45extern void pmu_unlock(void); 46 47extern int pmu_present(void); 48extern int pmu_get_model(void); 49 50extern void pmu_backlight_set_sleep(int sleep); 51 52#define PMU_MAX_BATTERIES 2 53 54/* values for pmu_power_flags */ 55#define PMU_PWR_AC_PRESENT 0x00000001 56 57/* values for pmu_battery_info.flags */ 58#define PMU_BATT_PRESENT 0x00000001 59#define PMU_BATT_CHARGING 0x00000002 60#define PMU_BATT_TYPE_MASK 0x000000f0 61#define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */ 62#define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */ 63#define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */ 64 65struct pmu_battery_info 66{ 67 unsigned int flags; 68 unsigned int charge; /* current charge */ 69 unsigned int max_charge; /* maximum charge */ 70 signed int amperage; /* current, positive if charging */ 71 unsigned int voltage; /* voltage */ 72 unsigned int time_remaining; /* remaining time */ 73}; 74 75extern int pmu_battery_count; 76extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; 77extern unsigned int pmu_power_flags; 78 79/* Backlight */ 80extern void pmu_backlight_init(void); 81 82/* some code needs to know if the PMU was suspended for hibernation */ 83#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) 84extern int pmu_sys_suspended; 85#else 86/* if power management is not configured it can't be suspended */ 87#define pmu_sys_suspended 0 88#endif 89 90#endif /* _LINUX_PMU_H */