LXR linux/include/linux/pmu.h

   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 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 */
  91