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
  10 #define PMU_DRIVER_VERSION      2
  11
  12 /*
  13  * PMU commands
  14  */
  15 #define PMU_POWER_CTRL0         0x10    /* control power of some devices */
  16 #define PMU_POWER_CTRL          0x11    /* control power of some devices */
  17 #define PMU_ADB_CMD             0x20    /* send ADB packet */
  18 #define PMU_ADB_POLL_OFF        0x21    /* disable ADB auto-poll */
  19 #define PMU_WRITE_NVRAM         0x33    /* write non-volatile RAM */
  20 #define PMU_READ_NVRAM          0x3b    /* read non-volatile RAM */
  21 #define PMU_SET_RTC             0x30    /* set real-time clock */
  22 #define PMU_READ_RTC            0x38    /* read real-time clock */
  23 #define PMU_SET_VOLBUTTON       0x40    /* set volume up/down position */
  24 #define PMU_BACKLIGHT_BRIGHT    0x41    /* set backlight brightness */
  25 #define PMU_GET_VOLBUTTON       0x48    /* get volume up/down position */
  26 #define PMU_PCEJECT             0x4c    /* eject PC-card from slot */
  27 #define PMU_BATTERY_STATE       0x6b    /* report battery state etc. */
  28 #define PMU_SMART_BATTERY_STATE 0x6f    /* report battery state (new way) */
  29 #define PMU_SET_INTR_MASK       0x70    /* set PMU interrupt mask */
  30 #define PMU_INT_ACK             0x78    /* read interrupt bits */
  31 #define PMU_SHUTDOWN            0x7e    /* turn power off */
  32 #define PMU_CPU_SPEED           0x7d    /* control CPU speed on some models */
  33 #define PMU_SLEEP               0x7f    /* put CPU to sleep */
  34 #define PMU_POWER_EVENTS        0x8f    /* Send power-event commands to PMU */
  35 #define PMU_I2C_CMD             0x9a    /* I2C operations */
  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 /* I2C related definitions */
  73 #define PMU_I2C_MODE_SIMPLE     0
  74 #define PMU_I2C_MODE_STDSUB     1
  75 #define PMU_I2C_MODE_COMBINED   2
  76
  77 #define PMU_I2C_BUS_STATUS      0
  78 #define PMU_I2C_BUS_SYSCLK      1
  79 #define PMU_I2C_BUS_POWER       2
  80
  81 #define PMU_I2C_STATUS_OK       0
  82 #define PMU_I2C_STATUS_DATAREAD 1
  83 #define PMU_I2C_STATUS_BUSY     0xfe
  84
  85
  86 /* Kind of PMU (model) */
  87 enum {
  88         PMU_UNKNOWN,
  89         PMU_OHARE_BASED,        /* 2400, 3400, 3500 (old G3 powerbook) */
  90         PMU_HEATHROW_BASED,     /* PowerBook G3 series */
  91         PMU_PADDINGTON_BASED,   /* 1999 PowerBook G3 */
  92         PMU_KEYLARGO_BASED,     /* Core99 motherboard (PMU99) */
  93         PMU_68K_V1,             /* 68K PMU, version 1 */
  94         PMU_68K_V2,             /* 68K PMU, version 2 */
  95 };
  96
  97 /* PMU PMU_POWER_EVENTS commands */
  98 enum {
  99         PMU_PWR_GET_POWERUP_EVENTS      = 0x00,
 100         PMU_PWR_SET_POWERUP_EVENTS      = 0x01,
 101         PMU_PWR_CLR_POWERUP_EVENTS      = 0x02,
 102         PMU_PWR_GET_WAKEUP_EVENTS       = 0x03,
 103         PMU_PWR_SET_WAKEUP_EVENTS       = 0x04,
 104         PMU_PWR_CLR_WAKEUP_EVENTS       = 0x05,
 105 };
 106
 107 /* Power events wakeup bits */
 108 enum {
 109         PMU_PWR_WAKEUP_KEY              = 0x01, /* Wake on key press */
 110         PMU_PWR_WAKEUP_AC_INSERT        = 0x02, /* Wake on AC adapter plug */
 111         PMU_PWR_WAKEUP_AC_CHANGE        = 0x04,
 112         PMU_PWR_WAKEUP_LID_OPEN         = 0x08,
 113         PMU_PWR_WAKEUP_RING             = 0x10,
 114 };
 115
 116 /*
 117  * Ioctl commands for the /dev/pmu device
 118  */
 119 #include <linux/ioctl.h>
 120
 121 /* no param */
 122 #define PMU_IOC_SLEEP           _IO('B', 0)
 123 /* out param: u32*      backlight value: 0 to 15 */
 124 #define PMU_IOC_GET_BACKLIGHT   _IOR('B', 1, size_t)
 125 /* in param: u32        backlight value: 0 to 15 */
 126 #define PMU_IOC_SET_BACKLIGHT   _IOW('B', 2, size_t)
 127 /* out param: u32*      PMU model */
 128 #define PMU_IOC_GET_MODEL       _IOR('B', 3, size_t)
 129 /* out param: u32*      has_adb: 0 or 1 */
 130 #define PMU_IOC_HAS_ADB         _IOR('B', 4, size_t)
 131 /* out param: u32*      can_sleep: 0 or 1 */
 132 #define PMU_IOC_CAN_SLEEP       _IOR('B', 5, size_t)
 133 /* no param, but historically was _IOR('B', 6, 0), meaning 4 bytes */
 134 #define PMU_IOC_GRAB_BACKLIGHT  _IOR('B', 6, size_t)
 135
 136 #ifdef __KERNEL__
 137
 138 extern int find_via_pmu(void);
 139
 140 extern int pmu_request(struct adb_request *req,
 141                 void (*done)(struct adb_request *), int nbytes, ...);
 142 extern int pmu_queue_request(struct adb_request *req);
 143 extern void pmu_poll(void);
 144 extern void pmu_poll_adb(void); /* For use by xmon */
 145 extern void pmu_wait_complete(struct adb_request *req);
 146
 147 /* For use before switching interrupts off for a long time;
 148  * warning: not stackable
 149  */
 150 extern void pmu_suspend(void);
 151 extern void pmu_resume(void);
 152
 153 extern void pmu_enable_irled(int on);
 154
 155 extern void pmu_restart(void);
 156 extern void pmu_shutdown(void);
 157 extern void pmu_unlock(void);
 158
 159 extern int pmu_present(void);
 160 extern int pmu_get_model(void);
 161
 162 #ifdef CONFIG_PM
 163 /*
 164  * Stuff for putting the powerbook to sleep and waking it again.
 165  *
 166  */
 167 #include <linux/list.h>
 168
 169 struct pmu_sleep_notifier
 170 {
 171         void (*notifier_call)(struct pmu_sleep_notifier *self, int when);
 172         int priority;
 173         struct list_head list;
 174 };
 175
 176 /* Code values for calling sleep/wakeup handlers
 177  */
 178 #define PBOOK_SLEEP_REQUEST     1
 179 #define PBOOK_SLEEP_NOW         2
 180 #define PBOOK_WAKE              3
 181
 182 /* priority levels in notifiers */
 183 #define SLEEP_LEVEL_VIDEO       100     /* Video driver (first wake) */
 184 #define SLEEP_LEVEL_MEDIABAY    90      /* Media bay driver */
 185 #define SLEEP_LEVEL_BLOCK       80      /* IDE, SCSI */
 186 #define SLEEP_LEVEL_NET         70      /* bmac, gmac */
 187 #define SLEEP_LEVEL_MISC        60      /* Anything else */
 188 #define SLEEP_LEVEL_USERLAND    55      /* Reserved for apm_emu */
 189 #define SLEEP_LEVEL_ADB         50      /* ADB (async) */
 190 #define SLEEP_LEVEL_SOUND       40      /* Sound driver (blocking) */
 191
 192 /* special register notifier functions */
 193 int pmu_register_sleep_notifier(struct pmu_sleep_notifier* notifier);
 194 int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* notifier);
 195
 196 #endif /* CONFIG_PM */
 197
 198 #define PMU_MAX_BATTERIES       2
 199
 200 /* values for pmu_power_flags */
 201 #define PMU_PWR_AC_PRESENT      0x00000001
 202
 203 /* values for pmu_battery_info.flags */
 204 #define PMU_BATT_PRESENT        0x00000001
 205 #define PMU_BATT_CHARGING       0x00000002
 206 #define PMU_BATT_TYPE_MASK      0x000000f0
 207 #define PMU_BATT_TYPE_SMART     0x00000010 /* Smart battery */
 208 #define PMU_BATT_TYPE_HOOPER    0x00000020 /* 3400/3500 */
 209 #define PMU_BATT_TYPE_COMET     0x00000030 /* 2400 */
 210
 211 struct pmu_battery_info
 212 {
 213         unsigned int    flags;
 214         unsigned int    charge;         /* current charge */
 215         unsigned int    max_charge;     /* maximum charge */
 216         signed int      amperage;       /* current, positive if charging */
 217         unsigned int    voltage;        /* voltage */
 218         unsigned int    time_remaining; /* remaining time */
 219 };
 220
 221 extern int pmu_battery_count;
 222 extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
 223 extern unsigned int pmu_power_flags;
 224
 225 /* Backlight */
 226 extern void pmu_backlight_init(void);
 227
 228 /* some code needs to know if the PMU was suspended for hibernation */
 229 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
 230 extern int pmu_sys_suspended;
 231 #else
 232 /* if power management is not configured it can't be suspended */
 233 #define pmu_sys_suspended       0
 234 #endif
 235
 236 #endif  /* __KERNEL__ */