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 <uapi/linux/pmu.h>
  13
  14
  15extern int find_via_pmu(void);
  16
  17extern int pmu_request(struct adb_request *req,
  18                void (*done)(struct adb_request *), int nbytes, ...);
  19extern int pmu_queue_request(struct adb_request *req);
  20extern void pmu_poll(void);
  21extern void pmu_poll_adb(void); /* For use by xmon */
  22extern 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)
  28extern void pmu_suspend(void);
  29extern void pmu_resume(void);
  30#else
  31static inline void pmu_suspend(void)
  32{}
  33static inline void pmu_resume(void)
  34{}
  35#endif
  36
  37extern void pmu_enable_irled(int on);
  38
  39extern void pmu_restart(void);
  40extern void pmu_shutdown(void);
  41extern void pmu_unlock(void);
  42
  43extern int pmu_present(void);
  44extern int pmu_get_model(void);
  45
  46extern 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
  61struct 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
  71extern int pmu_battery_count;
  72extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
  73extern unsigned int pmu_power_flags;
  74
  75/* Backlight */
  76extern 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)
  80extern 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