include/uapi/linux/pmu.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * Definitions for talking to the PMU.  The PMU is a microcontroller
   4  * which controls battery charging and system power on PowerBook 3400
   5  * and 2400 models as well as the RTC and various other things.
   6  *
   7  * Copyright (C) 1998 Paul Mackerras.
   8  */
   9
  10 #ifndef _UAPI_LINUX_PMU_H
  11 #define _UAPI_LINUX_PMU_H
  12
  13 #define PMU_DRIVER_VERSION      2
  14
  15 /*
  16  * PMU commands
  17  */
  18 #define PMU_POWER_CTRL0         0x10    /* control power of some devices */
  19 #define PMU_POWER_CTRL          0x11    /* control power of some devices */
  20 #define PMU_ADB_CMD             0x20    /* send ADB packet */
  21 #define PMU_ADB_POLL_OFF        0x21    /* disable ADB auto-poll */
  22 #define PMU_WRITE_NVRAM         0x33    /* write non-volatile RAM */
  23 #define PMU_READ_NVRAM          0x3b    /* read non-volatile RAM */
  24 #define PMU_SET_RTC             0x30    /* set real-time clock */
  25 #define PMU_READ_RTC            0x38    /* read real-time clock */
  26 #define PMU_SET_VOLBUTTON       0x40    /* set volume up/down position */
  27 #define PMU_BACKLIGHT_BRIGHT    0x41    /* set backlight brightness */
  28 #define PMU_GET_VOLBUTTON       0x48    /* get volume up/down position */
  29 #define PMU_PCEJECT             0x4c    /* eject PC-card from slot */
  30 #define PMU_BATTERY_STATE       0x6b    /* report battery state etc. */
  31 #define PMU_SMART_BATTERY_STATE 0x6f    /* report battery state (new way) */
  32 #define PMU_SET_INTR_MASK       0x70    /* set PMU interrupt mask */
  33 #define PMU_INT_ACK             0x78    /* read interrupt bits */
  34 #define PMU_SHUTDOWN            0x7e    /* turn power off */
  35 #define PMU_CPU_SPEED           0x7d    /* control CPU speed on some models */
  36 #define PMU_SLEEP               0x7f    /* put CPU to sleep */
  37 #define PMU_POWER_EVENTS        0x8f    /* Send power-event commands to PMU */
  38 #define PMU_I2C_CMD             0x9a    /* I2C operations */
  39 #define PMU_RESET               0xd0    /* reset CPU */
  40 #define PMU_GET_BRIGHTBUTTON    0xd9    /* report brightness up/down pos */
  41 #define PMU_GET_COVER           0xdc    /* report cover open/closed */
  42 #define PMU_SYSTEM_READY        0xdf    /* tell PMU we are awake */
  43 #define PMU_GET_VERSION         0xea    /* read the PMU version */
  44
  45 /* Bits to use with the PMU_POWER_CTRL0 command */
  46 #define PMU_POW0_ON             0x80    /* OR this to power ON the device */
  47 #define PMU_POW0_OFF            0x00    /* leave bit 7 to 0 to power it OFF */
  48 #define PMU_POW0_HARD_DRIVE     0x04    /* Hard drive power (on wallstreet/lombard ?) */
  49
  50 /* Bits to use with the PMU_POWER_CTRL command */
  51 #define PMU_POW_ON              0x80    /* OR this to power ON the device */
  52 #define PMU_POW_OFF             0x00    /* leave bit 7 to 0 to power it OFF */
  53 #define PMU_POW_BACKLIGHT       0x01    /* backlight power */
  54 #define PMU_POW_CHARGER         0x02    /* battery charger power */
  55 #define PMU_POW_IRLED           0x04    /* IR led power (on wallstreet) */
  56 #define PMU_POW_MEDIABAY        0x08    /* media bay power (wallstreet/lombard ?) */
  57
  58 /* Bits in PMU interrupt and interrupt mask bytes */
  59 #define PMU_INT_PCEJECT         0x04    /* PC-card eject buttons */
  60 #define PMU_INT_SNDBRT          0x08    /* sound/brightness up/down buttons */
  61 #define PMU_INT_ADB             0x10    /* ADB autopoll or reply data */
  62 #define PMU_INT_BATTERY         0x20    /* Battery state change */
  63 #define PMU_INT_ENVIRONMENT     0x40    /* Environment interrupts */
  64 #define PMU_INT_TICK            0x80    /* 1-second tick interrupt */
  65
  66 /* Other bits in PMU interrupt valid when PMU_INT_ADB is set */
  67 #define PMU_INT_ADB_AUTO        0x04    /* ADB autopoll, when PMU_INT_ADB */
  68 #define PMU_INT_WAITING_CHARGER 0x01    /* ??? */
  69 #define PMU_INT_AUTO_SRQ_POLL   0x02    /* ??? */
  70
  71 /* Bits in the environement message (either obtained via PMU_GET_COVER,
  72  * or via PMU_INT_ENVIRONMENT on core99 */
  73 #define PMU_ENV_LID_CLOSED      0x01    /* The lid is closed */
  74
  75 /* I2C related definitions */
  76 #define PMU_I2C_MODE_SIMPLE     0
  77 #define PMU_I2C_MODE_STDSUB     1
  78 #define PMU_I2C_MODE_COMBINED   2
  79
  80 #define PMU_I2C_BUS_STATUS      0
  81 #define PMU_I2C_BUS_SYSCLK      1
  82 #define PMU_I2C_BUS_POWER       2
  83
  84 #define PMU_I2C_STATUS_OK       0
  85 #define PMU_I2C_STATUS_DATAREAD 1
  86 #define PMU_I2C_STATUS_BUSY     0xfe
  87
  88
  89 /* Kind of PMU (model) */
  90 enum {
  91         PMU_UNKNOWN,
  92         PMU_OHARE_BASED,        /* 2400, 3400, 3500 (old G3 powerbook) */
  93         PMU_HEATHROW_BASED,     /* PowerBook G3 series */
  94         PMU_PADDINGTON_BASED,   /* 1999 PowerBook G3 */
  95         PMU_KEYLARGO_BASED,     /* Core99 motherboard (PMU99) */
  96         PMU_68K_V1,             /* 68K PMU, version 1 */
  97         PMU_68K_V2,             /* 68K PMU, version 2 */
  98 };
  99
 100 /* PMU PMU_POWER_EVENTS commands */
 101 enum {
 102         PMU_PWR_GET_POWERUP_EVENTS      = 0x00,
 103         PMU_PWR_SET_POWERUP_EVENTS      = 0x01,
 104         PMU_PWR_CLR_POWERUP_EVENTS      = 0x02,
 105         PMU_PWR_GET_WAKEUP_EVENTS       = 0x03,
 106         PMU_PWR_SET_WAKEUP_EVENTS       = 0x04,
 107         PMU_PWR_CLR_WAKEUP_EVENTS       = 0x05,
 108 };
 109
 110 /* Power events wakeup bits */
 111 enum {
 112         PMU_PWR_WAKEUP_KEY              = 0x01, /* Wake on key press */
 113         PMU_PWR_WAKEUP_AC_INSERT        = 0x02, /* Wake on AC adapter plug */
 114         PMU_PWR_WAKEUP_AC_CHANGE        = 0x04,
 115         PMU_PWR_WAKEUP_LID_OPEN         = 0x08,
 116         PMU_PWR_WAKEUP_RING             = 0x10,
 117 };
 118
 119 /*
 120  * Ioctl commands for the /dev/pmu device
 121  */
 122 #include <linux/ioctl.h>
 123
 124 /* no param */
 125 #define PMU_IOC_SLEEP           _IO('B', 0)
 126 /* out param: u32*      backlight value: 0 to 15 */
 127 #define PMU_IOC_GET_BACKLIGHT   _IOR('B', 1, size_t)
 128 /* in param: u32        backlight value: 0 to 15 */
 129 #define PMU_IOC_SET_BACKLIGHT   _IOW('B', 2, size_t)
 130 /* out param: u32*      PMU model */
 131 #define PMU_IOC_GET_MODEL       _IOR('B', 3, size_t)
 132 /* out param: u32*      has_adb: 0 or 1 */
 133 #define PMU_IOC_HAS_ADB         _IOR('B', 4, size_t)
 134 /* out param: u32*      can_sleep: 0 or 1 */
 135 #define PMU_IOC_CAN_SLEEP       _IOR('B', 5, size_t)
 136 /* no param, but historically was _IOR('B', 6, 0), meaning 4 bytes */
 137 #define PMU_IOC_GRAB_BACKLIGHT  _IOR('B', 6, size_t)
 138
 139
 140 #endif /* _UAPI_LINUX_PMU_H */