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 <uapi/linux/pmu.h> 13 14 15 extern int find_via_pmu(void); 16 17 extern int pmu_request(struct adb_request *req, 18 void (*done)(struct adb_request *), int nbytes, ...); 19 extern int pmu_queue_request(struct adb_request *req); 20 extern void pmu_poll(void); 21 extern void pmu_poll_adb(void); /* For use by xmon */ 22 extern void pmu_wait_complete(struct adb_request *req); 23 24 /* For use before switching interrupts off for a long time; 25 * warning: not stackable 26 */ 27 #if defined(CONFIG_ADB_PMU) 28 extern void pmu_suspend(void); 29 extern void pmu_resume(void); 30 #else pmu_suspend(void)31static inline void pmu_suspend(void) 32 {} pmu_resume(void)33static inline void pmu_resume(void) 34 {} 35 #endif 36 37 extern void pmu_enable_irled(int on); 38 39 extern void pmu_restart(void); 40 extern void pmu_shutdown(void); 41 extern void pmu_unlock(void); 42 43 extern int pmu_present(void); 44 extern int pmu_get_model(void); 45 46 extern void pmu_backlight_set_sleep(int sleep); 47 48 #define PMU_MAX_BATTERIES 2 49 50 /* values for pmu_power_flags */ 51 #define PMU_PWR_AC_PRESENT 0x00000001 52 53 /* values for pmu_battery_info.flags */ 54 #define PMU_BATT_PRESENT 0x00000001 55 #define PMU_BATT_CHARGING 0x00000002 56 #define PMU_BATT_TYPE_MASK 0x000000f0 57 #define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */ 58 #define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */ 59 #define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */ 60 61 struct pmu_battery_info 62 { 63 unsigned int flags; 64 unsigned int charge; /* current charge */ 65 unsigned int max_charge; /* maximum charge */ 66 signed int amperage; /* current, positive if charging */ 67 unsigned int voltage; /* voltage */ 68 unsigned int time_remaining; /* remaining time */ 69 }; 70 71 extern int pmu_battery_count; 72 extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; 73 extern unsigned int pmu_power_flags; 74 75 /* Backlight */ 76 extern void pmu_backlight_init(void); 77 78 /* some code needs to know if the PMU was suspended for hibernation */ 79 #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) 80 extern int pmu_sys_suspended; 81 #else 82 /* if power management is not configured it can't be suspended */ 83 #define pmu_sys_suspended 0 84 #endif 85 86 #endif /* _LINUX_PMU_H */ 87