include/linux/pmu.h

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