1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Definitions for talking to the PMU. The PMU is a microcontroller 4*4882a593Smuzhiyun * which controls battery charging and system power on PowerBook 3400 5*4882a593Smuzhiyun * and 2400 models as well as the RTC and various other things. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Copyright (C) 1998 Paul Mackerras. 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun #ifndef _LINUX_PMU_H 10*4882a593Smuzhiyun #define _LINUX_PMU_H 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include <linux/rtc.h> 13*4882a593Smuzhiyun #include <uapi/linux/pmu.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun extern int find_via_pmu(void); 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun extern int pmu_request(struct adb_request *req, 19*4882a593Smuzhiyun void (*done)(struct adb_request *), int nbytes, ...); 20*4882a593Smuzhiyun extern int pmu_queue_request(struct adb_request *req); 21*4882a593Smuzhiyun extern void pmu_poll(void); 22*4882a593Smuzhiyun extern void pmu_poll_adb(void); /* For use by xmon */ 23*4882a593Smuzhiyun extern void pmu_wait_complete(struct adb_request *req); 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun /* For use before switching interrupts off for a long time; 26*4882a593Smuzhiyun * warning: not stackable 27*4882a593Smuzhiyun */ 28*4882a593Smuzhiyun #if defined(CONFIG_ADB_PMU) 29*4882a593Smuzhiyun extern void pmu_suspend(void); 30*4882a593Smuzhiyun extern void pmu_resume(void); 31*4882a593Smuzhiyun #else pmu_suspend(void)32*4882a593Smuzhiyunstatic inline void pmu_suspend(void) 33*4882a593Smuzhiyun {} pmu_resume(void)34*4882a593Smuzhiyunstatic inline void pmu_resume(void) 35*4882a593Smuzhiyun {} 36*4882a593Smuzhiyun #endif 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun extern void pmu_enable_irled(int on); 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun extern time64_t pmu_get_time(void); 41*4882a593Smuzhiyun extern int pmu_set_rtc_time(struct rtc_time *tm); 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun extern void pmu_restart(void); 44*4882a593Smuzhiyun extern void pmu_shutdown(void); 45*4882a593Smuzhiyun extern void pmu_unlock(void); 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun extern int pmu_present(void); 48*4882a593Smuzhiyun extern int pmu_get_model(void); 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun extern void pmu_backlight_set_sleep(int sleep); 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun #define PMU_MAX_BATTERIES 2 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun /* values for pmu_power_flags */ 55*4882a593Smuzhiyun #define PMU_PWR_AC_PRESENT 0x00000001 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun /* values for pmu_battery_info.flags */ 58*4882a593Smuzhiyun #define PMU_BATT_PRESENT 0x00000001 59*4882a593Smuzhiyun #define PMU_BATT_CHARGING 0x00000002 60*4882a593Smuzhiyun #define PMU_BATT_TYPE_MASK 0x000000f0 61*4882a593Smuzhiyun #define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */ 62*4882a593Smuzhiyun #define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */ 63*4882a593Smuzhiyun #define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */ 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun struct pmu_battery_info 66*4882a593Smuzhiyun { 67*4882a593Smuzhiyun unsigned int flags; 68*4882a593Smuzhiyun unsigned int charge; /* current charge */ 69*4882a593Smuzhiyun unsigned int max_charge; /* maximum charge */ 70*4882a593Smuzhiyun signed int amperage; /* current, positive if charging */ 71*4882a593Smuzhiyun unsigned int voltage; /* voltage */ 72*4882a593Smuzhiyun unsigned int time_remaining; /* remaining time */ 73*4882a593Smuzhiyun }; 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun extern int pmu_battery_count; 76*4882a593Smuzhiyun extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; 77*4882a593Smuzhiyun extern unsigned int pmu_power_flags; 78*4882a593Smuzhiyun 79*4882a593Smuzhiyun /* Backlight */ 80*4882a593Smuzhiyun extern void pmu_backlight_init(void); 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun /* some code needs to know if the PMU was suspended for hibernation */ 83*4882a593Smuzhiyun #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) 84*4882a593Smuzhiyun extern int pmu_sys_suspended; 85*4882a593Smuzhiyun #else 86*4882a593Smuzhiyun /* if power management is not configured it can't be suspended */ 87*4882a593Smuzhiyun #define pmu_sys_suspended 0 88*4882a593Smuzhiyun #endif 89*4882a593Smuzhiyun 90*4882a593Smuzhiyun #endif /* _LINUX_PMU_H */ 91