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  * PMU commands
  12  */
  13 #define PMU_POWER_CTRL          0x11    /* control power of some devices */
  14 #define PMU_ADB_CMD             0x20    /* send ADB packet */
  15 #define PMU_ADB_POLL_OFF        0x21    /* disable ADB auto-poll */
  16 #define PMU_WRITE_NVRAM         0x33    /* write non-volatile RAM */
  17 #define PMU_READ_NVRAM          0x3b    /* read non-volatile RAM */
  18 #define PMU_SET_RTC             0x30    /* set real-time clock */
  19 #define PMU_READ_RTC            0x38    /* read real-time clock */
  20 #define PMU_SET_VOLBUTTON       0x40    /* set volume up/down position */
  21 #define PMU_BACKLIGHT_BRIGHT    0x41    /* set backlight brightness */
  22 #define PMU_GET_VOLBUTTON       0x48    /* get volume up/down position */
  23 #define PMU_PCEJECT             0x4c    /* eject PC-card from slot */
  24 #define PMU_BATTERY_STATE       0x6b    /* report battery state etc. */
  25 #define PMU_SET_INTR_MASK       0x70    /* set PMU interrupt mask */
  26 #define PMU_INT_ACK             0x78    /* read interrupt bits */
  27 #define PMU_SHUTDOWN            0x7e    /* turn power off */
  28 #define PMU_SLEEP               0x7f    /* put CPU to sleep */
  29 #define PMU_RESET               0xd0    /* reset CPU */
  30 #define PMU_GET_BRIGHTBUTTON    0xd9    /* report brightness up/down pos */
  31 #define PMU_GET_COVER           0xdc    /* report cover open/closed */
  32
  33 /* Bits to use with the PMU_POWER_CTRL command */
  34 #define PMU_POW_ON              0x80    /* OR this to power ON the device */
  35 #define PMU_POW_OFF             0x00    /* leave bit 7 to 0 to power it OFF */
  36 #define PMU_POW_BACKLIGHT       0x01    /* backlight power */
  37 #define PMU_POW_IRLED           0x04    /* IR led power (on wallstreet) */
  38
  39 /* Bits in PMU interrupt and interrupt mask bytes */
  40 #define PMU_INT_ADB_AUTO        0x04    /* ADB autopoll, when PMU_INT_ADB */
  41 #define PMU_INT_PCEJECT         0x04    /* PC-card eject buttons */
  42 #define PMU_INT_SNDBRT          0x08    /* sound/brightness up/down buttons */
  43 #define PMU_INT_ADB             0x10    /* ADB autopoll or reply data */
  44 #define PMU_INT_BATTERY         0x20
  45 #define PMU_INT_WAKEUP          0x40
  46 #define PMU_INT_TICK            0x80    /* 1-second tick interrupt */
  47
  48 /* Kind of PMU (model) */
  49 enum {
  50         PMU_UNKNOWN,
  51         PMU_OHARE_BASED,        /* 2400, 3400, 3500 (old G3 powerbook) */
  52         PMU_HEATHROW_BASED,     /* PowerBook G3 series */
  53         PMU_PADDINGTON_BASED,   /* 1999 PowerBook G3 */
  54 };
  55
  56 /*
  57  * Ioctl commands for the /dev/pmu device
  58  */
  59 #include <linux/ioctl.h>
  60
  61 /* no param */
  62 #define PMU_IOC_SLEEP           _IO('B', 0)
  63 /* out param: u32*      backlight value: 0 to 31 */
  64 #define PMU_IOC_GET_BACKLIGHT   _IOR('B', 1, sizeof(__u32*))
  65 /* in param: u32        backlight value: 0 to 31 */
  66 #define PMU_IOC_SET_BACKLIGHT   _IOW('B', 2, sizeof(__u32))
  67 /* out param: u32*      backlight value: 0 to 31 */
  68 #define PMU_IOC_GET_MODEL       _IOR('B', 3, sizeof(__u32*))
  69
  70 #ifdef __KERNEL__
  71
  72 int find_via_pmu(void);
  73 int via_pmu_init(void);
  74
  75 int pmu_request(struct adb_request *req,
  76                 void (*done)(struct adb_request *), int nbytes, ...);
  77 void pmu_poll(void);
  78
  79 void pmu_enable_backlight(int on);
  80 void pmu_set_brightness(int level);
  81
  82 void pmu_enable_irled(int on);
  83
  84 void pmu_restart(void);
  85 void pmu_shutdown(void);
  86
  87 int pmu_present(void);
  88 int pmu_get_model(void);
  89
  90 #ifdef CONFIG_PMAC_PBOOK
  91 /*
  92  * Stuff for putting the powerbook to sleep and waking it again.
  93  *
  94  */
  95 #include <linux/list.h>
  96
  97 struct pmu_sleep_notifier
  98 {
  99         int (*notifier_call)(struct pmu_sleep_notifier *self, int when);
 100         int priority;
 101         struct list_head list;
 102 };
 103
 104 /* Code values for calling sleep/wakeup handlers
 105  *
 106  * Note: If a sleep request got cancelled, all drivers will get
 107  * the PBOOK_SLEEP_REJECT, even those who didn't get the PBOOK_SLEEP_REQUEST.
 108  */
 109 #define PBOOK_SLEEP_REQUEST     1
 110 #define PBOOK_SLEEP_NOW         2
 111 #define PBOOK_SLEEP_REJECT      3
 112 #define PBOOK_WAKE              4
 113
 114 /* Result codes returned by the notifiers */
 115 #define PBOOK_SLEEP_OK          0
 116 #define PBOOK_SLEEP_REFUSE      -1
 117
 118 /* priority levels in notifiers */
 119 #define SLEEP_LEVEL_VIDEO       100     /* Video driver (first wake) */
 120 #define SLEEP_LEVEL_SOUND       90      /* Sound driver */
 121 #define SLEEP_LEVEL_MEDIABAY    80      /* Media bay driver */
 122 #define SLEEP_LEVEL_BLOCK       70      /* IDE, SCSI */
 123 #define SLEEP_LEVEL_NET         60      /* bmac */
 124 #define SLEEP_LEVEL_ADB         50      /* ADB */
 125 #define SLEEP_LEVEL_MISC        30      /* Anything */
 126 #define SLEEP_LEVEL_LAST        0       /* Anything */
 127
 128 /* special register notifier functions */
 129 int pmu_register_sleep_notifier(struct pmu_sleep_notifier* notifier);
 130 int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* notifier);
 131
 132 #endif /* CONFIG_PMAC_PBOOK */
 133
 134
 135 #endif  /* __KERNEL */