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
   9#ifndef _LINUX_PMU_H
  10#define _LINUX_PMU_H
  11
  12#define PMU_DRIVER_VERSION      2
  13
  14/*
  15 * PMU commands
  16 */
  17#define PMU_POWER_CTRL0         0x10    /* control power of some devices */
  18#define PMU_POWER_CTRL          0x11    /* control power of some devices */
  19#define PMU_ADB_CMD             0x20    /* send ADB packet */
  20#define PMU_ADB_POLL_OFF        0x21    /* disable ADB auto-poll */
  21#define PMU_WRITE_NVRAM         0x33    /* write non-volatile RAM */
  22#define PMU_READ_NVRAM          0x3b    /* read non-volatile RAM */
  23#define PMU_SET_RTC             0x30    /* set real-time clock */
  24#define PMU_READ_RTC            0x38    /* read real-time clock */
  25#define PMU_SET_VOLBUTTON       0x40    /* set volume up/down position */
  26#define PMU_BACKLIGHT_BRIGHT    0x41    /* set backlight brightness */
  27#define PMU_GET_VOLBUTTON       0x48    /* get volume up/down position */
  28#define PMU_PCEJECT             0x4c    /* eject PC-card from slot */
  29#define PMU_BATTERY_STATE       0x6b    /* report battery state etc. */
  30#define PMU_SMART_BATTERY_STATE 0x6f    /* report battery state (new way) */
  31#define PMU_SET_INTR_MASK       0x70    /* set PMU interrupt mask */
  32#define PMU_INT_ACK             0x78    /* read interrupt bits */
  33#define PMU_SHUTDOWN            0x7e    /* turn power off */
  34#define PMU_CPU_SPEED           0x7d    /* control CPU speed on some models */
  35#define PMU_SLEEP               0x7f    /* put CPU to sleep */
  36#define PMU_POWER_EVENTS        0x8f    /* Send power-event commands to PMU */
  37#define PMU_I2C_CMD             0x9a    /* I2C operations */
  38#define PMU_RESET               0xd0    /* reset CPU */
  39#define PMU_GET_BRIGHTBUTTON    0xd9    /* report brightness up/down pos */
  40#define PMU_GET_COVER           0xdc    /* report cover open/closed */
  41#define PMU_SYSTEM_READY        0xdf    /* tell PMU we are awake */
  42#define PMU_GET_VERSION         0xea    /* read the PMU version */
  43
  44/* Bits to use with the PMU_POWER_CTRL0 command */
  45#define PMU_POW0_ON             0x80    /* OR this to power ON the device */
  46#define PMU_POW0_OFF            0x00    /* leave bit 7 to 0 to power it OFF */
  47#define PMU_POW0_HARD_DRIVE     0x04    /* Hard drive power (on wallstreet/lombard ?) */
  48
  49/* Bits to use with the PMU_POWER_CTRL command */
  50#define PMU_POW_ON              0x80    /* OR this to power ON the device */
  51#define PMU_POW_OFF             0x00    /* leave bit 7 to 0 to power it OFF */
  52#define PMU_POW_BACKLIGHT       0x01    /* backlight power */
  53#define PMU_POW_CHARGER         0x02    /* battery charger power */
  54#define PMU_POW_IRLED           0x04    /* IR led power (on wallstreet) */
  55#define PMU_POW_MEDIABAY        0x08    /* media bay power (wallstreet/lombard ?) */
  56
  57/* Bits in PMU interrupt and interrupt mask bytes */
  58#define PMU_INT_PCEJECT         0x04    /* PC-card eject buttons */
  59#define PMU_INT_SNDBRT          0x08    /* sound/brightness up/down buttons */
  60#define PMU_INT_ADB             0x10    /* ADB autopoll or reply data */
  61#define PMU_INT_BATTERY         0x20    /* Battery state change */
  62#define PMU_INT_ENVIRONMENT     0x40    /* Environment interrupts */
  63#define PMU_INT_TICK            0x80    /* 1-second tick interrupt */
  64
  65/* Other bits in PMU interrupt valid when PMU_INT_ADB is set */
  66#define PMU_INT_ADB_AUTO        0x04    /* ADB autopoll, when PMU_INT_ADB */
  67#define PMU_INT_WAITING_CHARGER 0x01    /* ??? */
  68#define PMU_INT_AUTO_SRQ_POLL   0x02    /* ??? */
  69
  70/* Bits in the environement message (either obtained via PMU_GET_COVER,
  71 * or via PMU_INT_ENVIRONMENT on core99 */
  72#define PMU_ENV_LID_CLOSED      0x01    /* The lid is closed */
  73
  74/* I2C related definitions */
  75#define PMU_I2C_MODE_SIMPLE     0
  76#define PMU_I2C_MODE_STDSUB     1
  77#define PMU_I2C_MODE_COMBINED   2
  78
  79#define PMU_I2C_BUS_STATUS      0
  80#define PMU_I2C_BUS_SYSCLK      1
  81#define PMU_I2C_BUS_POWER       2
  82
  83#define PMU_I2C_STATUS_OK       0
  84#define PMU_I2C_STATUS_DATAREAD 1
  85#define PMU_I2C_STATUS_BUSY     0xfe
  86
  87
  88/* Kind of PMU (model) */
  89enum {
  90        PMU_UNKNOWN,
  91        PMU_OHARE_BASED,        /* 2400, 3400, 3500 (old G3 powerbook) */
  92        PMU_HEATHROW_BASED,     /* PowerBook G3 series */
  93        PMU_PADDINGTON_BASED,   /* 1999 PowerBook G3 */
  94        PMU_KEYLARGO_BASED,     /* Core99 motherboard (PMU99) */
  95        PMU_68K_V1,             /* 68K PMU, version 1 */
  96        PMU_68K_V2,             /* 68K PMU, version 2 */
  97};
  98
  99/* PMU PMU_POWER_EVENTS commands */
 100enum {
 101        PMU_PWR_GET_POWERUP_EVENTS      = 0x00,
 102        PMU_PWR_SET_POWERUP_EVENTS      = 0x01,
 103        PMU_PWR_CLR_POWERUP_EVENTS      = 0x02,
 104        PMU_PWR_GET_WAKEUP_EVENTS       = 0x03,
 105        PMU_PWR_SET_WAKEUP_EVENTS       = 0x04,
 106        PMU_PWR_CLR_WAKEUP_EVENTS       = 0x05,
 107};
 108
 109/* Power events wakeup bits */
 110enum {
 111        PMU_PWR_WAKEUP_KEY              = 0x01, /* Wake on key press */
 112        PMU_PWR_WAKEUP_AC_INSERT        = 0x02, /* Wake on AC adapter plug */
 113        PMU_PWR_WAKEUP_AC_CHANGE        = 0x04,
 114        PMU_PWR_WAKEUP_LID_OPEN         = 0x08,
 115        PMU_PWR_WAKEUP_RING             = 0x10,
 116};
 117        
 118/*
 119 * Ioctl commands for the /dev/pmu device
 120 */
 121#include <linux/ioctl.h>
 122
 123/* no param */
 124#define PMU_IOC_SLEEP           _IO('B', 0)
 125/* out param: u32*      backlight value: 0 to 15 */
 126#define PMU_IOC_GET_BACKLIGHT   _IOR('B', 1, size_t)
 127/* in param: u32        backlight value: 0 to 15 */
 128#define PMU_IOC_SET_BACKLIGHT   _IOW('B', 2, size_t)
 129/* out param: u32*      PMU model */
 130#define PMU_IOC_GET_MODEL       _IOR('B', 3, size_t)
 131/* out param: u32*      has_adb: 0 or 1 */
 132#define PMU_IOC_HAS_ADB         _IOR('B', 4, size_t) 
 133/* out param: u32*      can_sleep: 0 or 1 */
 134#define PMU_IOC_CAN_SLEEP       _IOR('B', 5, size_t) 
 135/* no param, but historically was _IOR('B', 6, 0), meaning 4 bytes */
 136#define PMU_IOC_GRAB_BACKLIGHT  _IOR('B', 6, size_t) 
 137
 138#ifdef __KERNEL__
 139
 140extern int find_via_pmu(void);
 141
 142extern int pmu_request(struct adb_request *req,
 143                void (*done)(struct adb_request *), int nbytes, ...);
 144extern int pmu_queue_request(struct adb_request *req);
 145extern void pmu_poll(void);
 146extern void pmu_poll_adb(void); /* For use by xmon */
 147extern void pmu_wait_complete(struct adb_request *req);
 148
 149/* For use before switching interrupts off for a long time;
 150 * warning: not stackable
 151 */
 152#if defined(CONFIG_ADB_PMU)
 153extern void pmu_suspend(void);
 154extern void pmu_resume(void);
 155#else
 156static inline void pmu_suspend(void)
 157{}
 158static inline void pmu_resume(void)
 159{}
 160#endif
 161
 162extern void pmu_enable_irled(int on);
 163
 164extern void pmu_restart(void);
 165extern void pmu_shutdown(void);
 166extern void pmu_unlock(void);
 167
 168extern int pmu_present(void);
 169extern int pmu_get_model(void);
 170
 171extern void pmu_backlight_set_sleep(int sleep);
 172
 173#define PMU_MAX_BATTERIES       2
 174
 175/* values for pmu_power_flags */
 176#define PMU_PWR_AC_PRESENT      0x00000001
 177
 178/* values for pmu_battery_info.flags */
 179#define PMU_BATT_PRESENT        0x00000001
 180#define PMU_BATT_CHARGING       0x00000002
 181#define PMU_BATT_TYPE_MASK      0x000000f0
 182#define PMU_BATT_TYPE_SMART     0x00000010 /* Smart battery */
 183#define PMU_BATT_TYPE_HOOPER    0x00000020 /* 3400/3500 */
 184#define PMU_BATT_TYPE_COMET     0x00000030 /* 2400 */
 185
 186struct pmu_battery_info
 187{
 188        unsigned int    flags;
 189        unsigned int    charge;         /* current charge */
 190        unsigned int    max_charge;     /* maximum charge */
 191        signed int      amperage;       /* current, positive if charging */
 192        unsigned int    voltage;        /* voltage */
 193        unsigned int    time_remaining; /* remaining time */
 194};
 195
 196extern int pmu_battery_count;
 197extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
 198extern unsigned int pmu_power_flags;
 199
 200/* Backlight */
 201extern void pmu_backlight_init(void);
 202
 203/* some code needs to know if the PMU was suspended for hibernation */
 204#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
 205extern int pmu_sys_suspended;
 206#else
 207/* if power management is not configured it can't be suspended */
 208#define pmu_sys_suspended       0
 209#endif
 210
 211#endif  /* __KERNEL__ */
 212
 213#endif /* _LINUX_PMU_H */
 214
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