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
   9 #include <linux/config.h>
  10
  11 #define PMU_DRIVER_VERSION      2
  12
  13 /*
  14  * PMU commands
  15  */
  16 #define PMU_POWER_CTRL0         0x10    /* control power of some devices */
  17 #define PMU_POWER_CTRL          0x11    /* control power of some devices */
  18 #define PMU_ADB_CMD             0x20    /* send ADB packet */
  19 #define PMU_ADB_POLL_OFF        0x21    /* disable ADB auto-poll */
  20 #define PMU_WRITE_NVRAM         0x33    /* write non-volatile RAM */
  21 #define PMU_READ_NVRAM          0x3b    /* read non-volatile RAM */
  22 #define PMU_SET_RTC             0x30    /* set real-time clock */
  23 #define PMU_READ_RTC            0x38    /* read real-time clock */
  24 #define PMU_SET_VOLBUTTON       0x40    /* set volume up/down position */
  25 #define PMU_BACKLIGHT_BRIGHT    0x41    /* set backlight brightness */
  26 #define PMU_GET_VOLBUTTON       0x48    /* get volume up/down position */
  27 #define PMU_PCEJECT             0x4c    /* eject PC-card from slot */
  28 #define PMU_BATTERY_STATE       0x6b    /* report battery state etc. */
  29 #define PMU_SMART_BATTERY_STATE 0x6f    /* report battery state (new way) */
  30 #define PMU_SET_INTR_MASK       0x70    /* set PMU interrupt mask */
  31 #define PMU_INT_ACK             0x78    /* read interrupt bits */
  32 #define PMU_SHUTDOWN            0x7e    /* turn power off */
  33 #define PMU_CPU_SPEED           0x7d    /* control CPU speed on some models */
  34 #define PMU_SLEEP               0x7f    /* put CPU to sleep */
  35 #define PMU_POWER_EVENTS        0x8f    /* Send power-event commands to PMU */
  36 #define PMU_RESET               0xd0    /* reset CPU */
  37 #define PMU_GET_BRIGHTBUTTON    0xd9    /* report brightness up/down pos */
  38 #define PMU_GET_COVER           0xdc    /* report cover open/closed */
  39 #define PMU_SYSTEM_READY        0xdf    /* tell PMU we are awake */
  40 #define PMU_GET_VERSION         0xea    /* read the PMU version */
  41
  42 /* Bits to use with the PMU_POWER_CTRL0 command */
  43 #define PMU_POW0_ON             0x80    /* OR this to power ON the device */
  44 #define PMU_POW0_OFF            0x00    /* leave bit 7 to 0 to power it OFF */
  45 #define PMU_POW0_HARD_DRIVE     0x04    /* Hard drive power (on wallstreet/lombard ?) */
  46
  47 /* Bits to use with the PMU_POWER_CTRL command */
  48 #define PMU_POW_ON              0x80    /* OR this to power ON the device */
  49 #define PMU_POW_OFF             0x00    /* leave bit 7 to 0 to power it OFF */
  50 #define PMU_POW_BACKLIGHT       0x01    /* backlight power */
  51 #define PMU_POW_CHARGER         0x02    /* battery charger power */
  52 #define PMU_POW_IRLED           0x04    /* IR led power (on wallstreet) */
  53 #define PMU_POW_MEDIABAY        0x08    /* media bay power (wallstreet/lombard ?) */
  54
  55 /* Bits in PMU interrupt and interrupt mask bytes */
  56 #define PMU_INT_PCEJECT         0x04    /* PC-card eject buttons */
  57 #define PMU_INT_SNDBRT          0x08    /* sound/brightness up/down buttons */
  58 #define PMU_INT_ADB             0x10    /* ADB autopoll or reply data */
  59 #define PMU_INT_BATTERY         0x20    /* Battery state change */
  60 #define PMU_INT_ENVIRONMENT     0x40    /* Environment interrupts */
  61 #define PMU_INT_TICK            0x80    /* 1-second tick interrupt */
  62
  63 /* Other bits in PMU interrupt valid when PMU_INT_ADB is set */
  64 #define PMU_INT_ADB_AUTO        0x04    /* ADB autopoll, when PMU_INT_ADB */
  65 #define PMU_INT_WAITING_CHARGER 0x01    /* ??? */
  66 #define PMU_INT_AUTO_SRQ_POLL   0x02    /* ??? */
  67
  68 /* Bits in the environement message (either obtained via PMU_GET_COVER,
  69  * or via PMU_INT_ENVIRONMENT on core99 */
  70 #define PMU_ENV_LID_CLOSED      0x01    /* The lid is closed */
  71
  72 /* Kind of PMU (model) */
  73 enum {
  74         PMU_UNKNOWN,
  75         PMU_OHARE_BASED,        /* 2400, 3400, 3500 (old G3 powerbook) */
  76         PMU_HEATHROW_BASED,     /* PowerBook G3 series */
  77         PMU_PADDINGTON_BASED,   /* 1999 PowerBook G3 */
  78         PMU_KEYLARGO_BASED,     /* Core99 motherboard (PMU99) */
  79         PMU_68K_V1,             /* 68K PMU, version 1 */
  80         PMU_68K_V2,             /* 68K PMU, version 2 */
  81 };
  82
  83 /* PMU PMU_POWER_EVENTS commands */
  84 enum {
  85         PMU_PWR_GET_POWERUP_EVENTS      = 0x00,
  86         PMU_PWR_SET_POWERUP_EVENTS      = 0x01,
  87         PMU_PWR_CLR_POWERUP_EVENTS      = 0x02,
  88         PMU_PWR_GET_WAKEUP_EVENTS       = 0x03,
  89         PMU_PWR_SET_WAKEUP_EVENTS       = 0x04,
  90         PMU_PWR_CLR_WAKEUP_EVENTS       = 0x05,
  91 };
  92
  93 /* Power events wakeup bits */
  94 enum {
  95         PMU_PWR_WAKEUP_KEY              = 0x01, /* Wake on key press */
  96         PMU_PWR_WAKEUP_AC_INSERT        = 0x02, /* Wake on AC adapter plug */
  97         PMU_PWR_WAKEUP_AC_CHANGE        = 0x04,
  98         PMU_PWR_WAKEUP_LID_OPEN         = 0x08,
  99         PMU_PWR_WAKEUP_RING             = 0x10,
 100 };
 101
 102 /*
 103  * Ioctl commands for the /dev/pmu device
 104  */
 105 #include <linux/ioctl.h>
 106
 107 /* no param */
 108 #define PMU_IOC_SLEEP           _IO('B', 0)
 109 /* out param: u32*      backlight value: 0 to 15 */
 110 #define PMU_IOC_GET_BACKLIGHT   _IOR('B', 1, sizeof(__u32*))
 111 /* in param: u32        backlight value: 0 to 15 */
 112 #define PMU_IOC_SET_BACKLIGHT   _IOW('B', 2, sizeof(__u32))
 113 /* out param: u32*      PMU model */
 114 #define PMU_IOC_GET_MODEL       _IOR('B', 3, sizeof(__u32*))
 115 /* out param: u32*      has_adb: 0 or 1 */
 116 #define PMU_IOC_HAS_ADB         _IOR('B', 4, sizeof(__u32*))
 117 /* out param: u32*      can_sleep: 0 or 1 */
 118 #define PMU_IOC_CAN_SLEEP       _IOR('B', 5, sizeof(__u32*))
 119 /* no param */
 120 #define PMU_IOC_GRAB_BACKLIGHT  _IOR('B', 6, 0)
 121
 122 #ifdef __KERNEL__
 123
 124 extern int find_via_pmu(void);
 125
 126 extern int pmu_request(struct adb_request *req,
 127                 void (*done)(struct adb_request *), int nbytes, ...);
 128
 129 extern void pmu_poll(void);
 130
 131 /* For use before switching interrupts off for a long time;
 132  * warning: not stackable
 133  */
 134 extern void pmu_suspend(void);
 135 extern void pmu_resume(void);
 136
 137 extern void pmu_enable_irled(int on);
 138
 139 extern void pmu_restart(void);
 140 extern void pmu_shutdown(void);
 141
 142 extern int pmu_present(void);
 143 extern int pmu_get_model(void);
 144
 145 #ifdef CONFIG_PMAC_PBOOK
 146 /*
 147  * Stuff for putting the powerbook to sleep and waking it again.
 148  *
 149  */
 150 #include <linux/list.h>
 151
 152 struct pmu_sleep_notifier
 153 {
 154         int (*notifier_call)(struct pmu_sleep_notifier *self, int when);
 155         int priority;
 156         struct list_head list;
 157 };
 158
 159 /* Code values for calling sleep/wakeup handlers
 160  *
 161  * Note: If a sleep request got cancelled, all drivers will get
 162  * the PBOOK_SLEEP_REJECT, even those who didn't get the PBOOK_SLEEP_REQUEST.
 163  */
 164 #define PBOOK_SLEEP_REQUEST     1
 165 #define PBOOK_SLEEP_NOW         2
 166 #define PBOOK_SLEEP_REJECT      3
 167 #define PBOOK_WAKE              4
 168
 169 /* Result codes returned by the notifiers */
 170 #define PBOOK_SLEEP_OK          0
 171 #define PBOOK_SLEEP_REFUSE      -1
 172
 173 /* priority levels in notifiers */
 174 #define SLEEP_LEVEL_VIDEO       100     /* Video driver (first wake) */
 175 #define SLEEP_LEVEL_MEDIABAY    90      /* Media bay driver */
 176 #define SLEEP_LEVEL_BLOCK       80      /* IDE, SCSI */
 177 #define SLEEP_LEVEL_NET         70      /* bmac, gmac */
 178 #define SLEEP_LEVEL_MISC        60      /* Anything else */
 179 #define SLEEP_LEVEL_USERLAND    55      /* Reserved for apm_emu */
 180 #define SLEEP_LEVEL_ADB         50      /* ADB (async) */
 181 #define SLEEP_LEVEL_SOUND       40      /* Sound driver (blocking) */
 182
 183 /* special register notifier functions */
 184 int pmu_register_sleep_notifier(struct pmu_sleep_notifier* notifier);
 185 int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* notifier);
 186
 187 #define PMU_MAX_BATTERIES       2
 188
 189 /* values for pmu_power_flags */
 190 #define PMU_PWR_AC_PRESENT      0x00000001
 191
 192 /* values for pmu_battery_info.flags */
 193 #define PMU_BATT_PRESENT        0x00000001
 194 #define PMU_BATT_CHARGING       0x00000002
 195 #define PMU_BATT_TYPE_MASK      0x000000f0
 196 #define PMU_BATT_TYPE_SMART     0x00000010 /* Smart battery */
 197 #define PMU_BATT_TYPE_HOOPER    0x00000020 /* 3400/3500 */
 198 #define PMU_BATT_TYPE_COMET     0x00000030 /* 2400 */
 199
 200 struct pmu_battery_info
 201 {
 202         unsigned int    flags;
 203         unsigned int    charge;         /* current charge */
 204         unsigned int    max_charge;     /* maximum charge */
 205         signed int      current;        /* current, positive if charging */
 206         unsigned int    voltage;        /* voltage */
 207         unsigned int    time_remaining; /* remaining time */
 208 };
 209
 210 extern int pmu_battery_count;
 211 extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
 212 extern unsigned int pmu_power_flags;
 213
 214 #endif /* CONFIG_PMAC_PBOOK */
 215
 216 #endif  /* __KERNEL__ */