include/linux/apm

/* */
   1 #ifndef _LINUX_APM_H
   2 #define _LINUX_APM_H
   3 
   4 /*
   5  * Include file for the interface to an APM BIOS
   6  * Copyright 1994, 1995 Stephen Rothwell (Stephen.Rothwell@pd.necisa.oz.au)
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * $Id: apm_bios.h,v 0.9 1995/03/09 13:50:05 sfr Exp $
  19  */
  20 
  21 typedef unsigned short  apm_event_t;
  22 
  23 #ifdef __KERNEL__
  24 
  25 #include <linux/tasks.h>        /* for NR_TASKS */
  26 #include <linux/sched.h>        /* for _TSS */
  27 
  28 #define APM_CS          _TSS(NR_TASKS)
  29 #define APM_CS_16       (APM_CS + 8)
  30 #define APM_DS          (APM_CS_16 + 8)
  31 
  32 struct apm_bios_info {
  33         unsigned short  version;
  34         unsigned short  cseg;
  35         unsigned long   offset;
  36         unsigned short  cseg_16;
  37         unsigned short  dseg;
  38         unsigned short  flags;
  39         unsigned short  cseg_len;
  40         unsigned short  dseg_len;
  41 };
  42 
  43                                 /* Results of APM Installation Check */
  44 #define APM_16_BIT_SUPPORT      0x0001
  45 #define APM_32_BIT_SUPPORT      0x0002
  46 #define APM_IDLE_SLOWS_CLOCK    0x0004
  47 #define APM_BIOS_DISABLED       0x0008
  48 #define APM_BIOS_DISENGAGED     0x0010
  49 
  50 /*
  51  * Maximum number of events stored
  52  */
  53 #define APM_MAX_EVENTS          20
  54 
  55 /*
  56  * The per-file APM data
  57  */
  58 struct apm_bios_struct {
  59         int             magic;
  60         struct apm_bios_struct *        next;
  61         int             suser;
  62         int             suspends_pending;
  63         int             standbys_pending;
  64         int             event_head;
  65         int             event_tail;
  66         apm_event_t     events[APM_MAX_EVENTS];
  67 };
  68 
  69 /*
  70  * The magic number in apm_bios_struct
  71  */
  72 #define APM_BIOS_MAGIC          0x4101
  73 
  74 /*
  75  * in init/main.c
  76  */
  77 extern struct apm_bios_info     apm_bios_info;
  78 
  79 extern void             apm_bios_init(void);
  80 
  81 extern int              apm_register_callback(int (*callback)(apm_event_t));
  82 extern void             apm_unregister_callback(int (*callback)(apm_event_t));
  83 
  84 extern int              apm_display_blank(void);
  85 extern int              apm_display_unblank(void);
  86 
  87 #endif  /* __KERNEL__ */
  88 
  89 /*
  90  * Power states
  91  */
  92 #define APM_STATE_READY         0x0000
  93 #define APM_STATE_STANDBY       0x0001
  94 #define APM_STATE_SUSPEND       0x0002
  95 #define APM_STATE_OFF           0x0003
  96 #define APM_STATE_BUSY          0x0004
  97 #define APM_STATE_REJECT        0x0005
  98 
  99 /*
 100  * Events (results of Get PM Event)
 101  */
 102 #define APM_SYS_STANDBY         0x0001
 103 #define APM_SYS_SUSPEND         0x0002
 104 #define APM_NORMAL_RESUME       0x0003
 105 #define APM_CRITICAL_RESUME     0x0004
 106 #define APM_LOW_BATTERY         0x0005
 107 #define APM_POWER_STATUS_CHANGE 0x0006
 108 #define APM_UPDATE_TIME         0x0007
 109 #define APM_CRITICAL_SUSPEND    0x0008
 110 #define APM_USER_STANDBY        0x0009
 111 #define APM_USER_SUSPEND        0x000a
 112 #define APM_STANDBY_RESUME      0x000b
 113 
 114 /*
 115  * Error codes
 116  */
 117 #define APM_SUCCESS             0x00
 118 #define APM_DISABLED            0x01
 119 #define APM_CONNECTED           0x02
 120 #define APM_NOT_CONNECTED       0x03
 121 #define APM_16_CONNECTED        0x05
 122 #define APM_16_UNSUPPORTED      0x06
 123 #define APM_32_CONNECTED        0x07
 124 #define APM_32_UNSUPPORTED      0x08
 125 #define APM_BAD_DEVICE          0x09
 126 #define APM_BAD_PARAM           0x0a
 127 #define APM_NOT_ENGAGED         0x0b
 128 #define APM_BAD_STATE           0x60
 129 #define APM_NO_EVENTS           0x80
 130 #define APM_NOT_PRESENT         0x86
 131 
 132 /* ioctl operations */
 133 #include <linux/ioctl.h>
 134 
 135 #define APM_IOC_STANDBY         _IO('A', 1)
 136 #define APM_IOC_SUSPEND         _IO('A', 2)
 137 
 138 #endif  /* LINUX_APM_H */
/* */
root/include/linux/apm_bios.h

INCLUDED FROM
