include/asm-ppc/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  * PMU commands
  11  */
  12 #define PMU_POWER_CTRL          0x11    /* control power of some devices */
  13 #define PMU_ADB_CMD             0x20    /* send ADB packet */
  14 #define PMU_ADB_POLL_OFF        0x21    /* disable ADB auto-poll */
  15 #define PMU_WRITE_NVRAM         0x33    /* write non-volatile RAM */
  16 #define PMU_READ_NVRAM          0x3b    /* read non-volatile RAM */
  17 #define PMU_SET_RTC             0x30    /* set real-time clock */
  18 #define PMU_READ_RTC            0x38    /* read real-time clock */
  19 #define PMU_SET_VOLBUTTON       0x40    /* set volume up/down position */
  20 #define PMU_BACKLIGHT_BRIGHT    0x41    /* set backlight brightness */
  21 #define PMU_GET_VOLBUTTON       0x48    /* get volume up/down position */
  22 #define PMU_PCEJECT             0x4c    /* eject PC-card from slot */
  23 #define PMU_BATTERY_STATE       0x6b    /* report battery state etc. */
  24 #define PMU_SET_INTR_MASK       0x70    /* set PMU interrupt mask */
  25 #define PMU_INT_ACK             0x78    /* read interrupt bits */
  26 #define PMU_SHUTDOWN            0x7e    /* turn power off */
  27 #define PMU_SLEEP               0x7f    /* put CPU to sleep */
  28 #define PMU_RESET               0xd0    /* reset CPU */
  29 #define PMU_GET_BRIGHTBUTTON    0xd9    /* report brightness up/down pos */
  30 #define PMU_GET_COVER           0xdc    /* report cover open/closed */
  31
  32 /* Bits to use with the PMU_POWER_CTRL command */
  33 #define PMU_POW_ON              0x80    /* OR this to power ON the device */
  34 #define PMU_POW_OFF             0x00    /* leave bit 7 to 0 to power it OFF */
  35 #define PMU_POW_BACKLIGHT       0x01    /* backlight power */
  36 #define PMU_POW_IRLED           0x04    /* IR led power (on wallstreet) ??? */
  37
  38 /* Bits in PMU interrupt and interrupt mask bytes */
  39 #define PMU_INT_ADB_AUTO        0x04    /* ADB autopoll, when PMU_INT_ADB */
  40 #define PMU_INT_PCEJECT         0x04    /* PC-card eject buttons */
  41 #define PMU_INT_SNDBRT          0x08    /* sound/brightness up/down buttons */
  42 #define PMU_INT_ADB             0x10    /* ADB autopoll or reply data */
  43 #define PMU_INT_TICK            0x80    /* 1-second tick interrupt */
  44
  45 /* Kind of PMU (model) */
  46 enum {
  47   PMU_UNKNOWN,
  48   PMU_OHARE_BASED,
  49   PMU_HEATHROW_BASED
  50 };
  51
  52 /*
  53  * Ioctl commands for the /dev/pmu device
  54  */
  55 #include <linux/ioctl.h>
  56
  57 /* no param */
  58 #define PMU_IOC_SLEEP           _IO('B', 0)
  59 /* out param: u32*      backlight value: 0 to 31 */
  60 #define PMU_IOC_GET_BACKLIGHT   _IOR('B', 1, sizeof(__u32*))
  61 /* in param: u32        backlight value: 0 to 31 */
  62 #define PMU_IOC_SET_BACKLIGHT   _IOW('B', 2, sizeof(__u32))
  63 /* out param: u32*      backlight value: 0 to 31 */
  64 #define PMU_IOC_GET_MODEL       _IOR('B', 3, sizeof(__u32*))
  65
  66 #ifdef __KERNEL__
  67
  68 void find_via_pmu(void);
  69 void via_pmu_init(void);
  70
  71 int pmu_request(struct adb_request *req,
  72                 void (*done)(struct adb_request *), int nbytes, ...);
  73 void pmu_poll(void);
  74
  75 void pmu_enable_backlight(int on);
  76 void pmu_set_brightness(int level);
  77
  78 void pmu_enable_irled(int on);
  79
  80 void pmu_restart(void);
  81 void pmu_shutdown(void);
  82
  83 int pmu_present(void);
  84 int pmu_get_model(void);
  85
  86 /*
  87  * Stuff for putting the powerbook to sleep and waking it again.
  88  */
  89 #include <linux/notifier.h>
  90
  91 extern struct notifier_block *sleep_notifier_list;
  92
  93 /* code values for calling sleep/wakeup handlers */
  94 #define PBOOK_SLEEP     1
  95 #define PBOOK_WAKE      2
  96
  97 #endif  /* __KERNEL */