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