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 16 extern int __init find_via_pmu(void); 17 18 extern int pmu_request(struct adb_request *req, 19 void (*done)(struct adb_request *), int nbytes, ...); 20 extern int pmu_queue_request(struct adb_request *req); 21 extern void pmu_poll(void); 22 extern void pmu_poll_adb(void); /* For use by xmon */ 23 extern 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) 29 extern void pmu_suspend(void); 30 extern void pmu_resume(void); 31 #else pmu_suspend(void)32static inline void pmu_suspend(void) 33 {} pmu_resume(void)34static inline void pmu_resume(void) 35 {} 36 #endif 37 38 extern void pmu_enable_irled(int on); 39 40 extern time64_t pmu_get_time(void); 41 extern int pmu_set_rtc_time(struct rtc_time *tm); 42 43 extern void pmu_restart(void); 44 extern void pmu_shutdown(void); 45 extern void pmu_unlock(void); 46 47 extern int pmu_present(void); 48 extern int pmu_get_model(void); 49 50 extern 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 65 struct 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 75 extern int pmu_battery_count; 76 extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; 77 extern unsigned int pmu_power_flags; 78 79 /* Backlight */ 80 extern 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) 84 extern 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 */ 91