iokit/Kernel/IOPMPowerSource.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #include <IOKit/pwr_mgt/IOPMPowerSource.h>
  25
  26 #define super OSObject
  27
  28 OSDefineMetaClassAndStructors(IOPMPowerSource, OSObject)
  29
  30 // **********************************************************************************
  31 // init
  32 //
  33 // **********************************************************************************
  34 bool IOPMPowerSource::init (unsigned short whichBatteryIndex)
  35 {
  36   if (!super::init ())
  37     return false;
  38
  39   bBatteryIndex = whichBatteryIndex;
  40   nextInList    = 0;
  41
  42   return true;
  43 }
  44
  45 // **********************************************************************************
  46 // capacityPercentRemaining
  47 //
  48 // **********************************************************************************
  49 unsigned long IOPMPowerSource::capacityPercentRemaining (void)
  50 {
  51    unsigned long percentage = 0;
  52
  53    if (bMaxCapacity > 0)
  54      percentage = (bCurCapacity * 100) / bMaxCapacity;
  55
  56    // always return a non-zero value unless the real capacity IS zero.
  57    if (percentage == 0 && bCurCapacity > 0)
  58      percentage = 1;
  59
  60    return percentage;
  61 }
  62
  63 // **********************************************************************************
  64 // atWarnLevel
  65 //
  66 // **********************************************************************************
  67 bool IOPMPowerSource::atWarnLevel (void)
  68 {
  69   return bFlags & kBatteryAtWarn;
  70 }
  71
  72 // **********************************************************************************
  73 // acConnected
  74 //
  75 // **********************************************************************************
  76 bool IOPMPowerSource::acConnected (void)
  77 {
  78   return bFlags & kACInstalled;
  79 }
  80
  81 // **********************************************************************************
  82 // depleted
  83 //
  84 // **********************************************************************************
  85 bool IOPMPowerSource::depleted (void)
  86 {
  87   return bFlags & kBatteryDepleted;
  88 }
  89
  90 // **********************************************************************************
  91 // isInstalled
  92 //
  93 // **********************************************************************************
  94 bool IOPMPowerSource::isInstalled (void)
  95 {
  96   return bFlags & kBatteryInstalled;
  97 }
  98
  99 // **********************************************************************************
 100 // isCharging
 101 //
 102 // **********************************************************************************
 103 bool IOPMPowerSource::isCharging (void)
 104 {
 105   return bFlags & kBatteryCharging;
 106 }
 107
 108 // **********************************************************************************
 109 // timeRemaining
 110 //
 111 // **********************************************************************************
 112 unsigned long IOPMPowerSource::timeRemaining (void)
 113 {
 114   return bTimeRemaining;
 115 }
 116
 117 // **********************************************************************************
 118 // maxCapacity
 119 //
 120 // **********************************************************************************
 121 unsigned long IOPMPowerSource::maxCapacity (void)
 122 {
 123   return bMaxCapacity;
 124 }
 125
 126 // **********************************************************************************
 127 // curCapacity
 128 //
 129 // **********************************************************************************
 130 unsigned long IOPMPowerSource::curCapacity (void)
 131 {
 132   return bCurCapacity;
 133 }
 134
 135 // **********************************************************************************
 136 // currentDrawn
 137 //
 138 // **********************************************************************************
 139 long IOPMPowerSource::currentDrawn (void)
 140 {
 141   return bCurrent;
 142 }
 143
 144 // **********************************************************************************
 145 // voltage
 146 //
 147 // **********************************************************************************
 148
 149 unsigned long IOPMPowerSource::voltage (void)
 150 {
 151   return bVoltage;
 152 }
 153
 154 // **********************************************************************************
 155 // updateStatus
 156 //
 157 // **********************************************************************************
 158
 159 void IOPMPowerSource::updateStatus (void)
 160 {
 161
 162 }
 163
 164
 165
 166
 167