iokit/Kernel/IOPMPowerSource.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
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  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30
  31 #include <IOKit/pwr_mgt/IOPMPowerSource.h>
  32
  33 #define super OSObject
  34
  35 OSDefineMetaClassAndStructors(IOPMPowerSource, OSObject)
  36
  37 // **********************************************************************************
  38 // init
  39 //
  40 // **********************************************************************************
  41 bool IOPMPowerSource::init (unsigned short whichBatteryIndex)
  42 {
  43   if (!super::init ())
  44     return false;
  45
  46   bBatteryIndex = whichBatteryIndex;
  47   nextInList    = 0;
  48
  49   return true;
  50 }
  51
  52 // **********************************************************************************
  53 // capacityPercentRemaining
  54 //
  55 // **********************************************************************************
  56 unsigned long IOPMPowerSource::capacityPercentRemaining (void)
  57 {
  58    unsigned long percentage = 0;
  59
  60    if (bMaxCapacity > 0)
  61      percentage = (bCurCapacity * 100) / bMaxCapacity;
  62
  63    // always return a non-zero value unless the real capacity IS zero.
  64    if (percentage == 0 && bCurCapacity > 0)
  65      percentage = 1;
  66
  67    return percentage;
  68 }
  69
  70 // **********************************************************************************
  71 // atWarnLevel
  72 //
  73 // **********************************************************************************
  74 bool IOPMPowerSource::atWarnLevel (void)
  75 {
  76   return bFlags & kBatteryAtWarn;
  77 }
  78
  79 // **********************************************************************************
  80 // acConnected
  81 //
  82 // **********************************************************************************
  83 bool IOPMPowerSource::acConnected (void)
  84 {
  85   return bFlags & kACInstalled;
  86 }
  87
  88 // **********************************************************************************
  89 // depleted
  90 //
  91 // **********************************************************************************
  92 bool IOPMPowerSource::depleted (void)
  93 {
  94   return bFlags & kBatteryDepleted;
  95 }
  96
  97 // **********************************************************************************
  98 // isInstalled
  99 //
 100 // **********************************************************************************
 101 bool IOPMPowerSource::isInstalled (void)
 102 {
 103   return bFlags & kBatteryInstalled;
 104 }
 105
 106 // **********************************************************************************
 107 // isCharging
 108 //
 109 // **********************************************************************************
 110 bool IOPMPowerSource::isCharging (void)
 111 {
 112   return bFlags & kBatteryCharging;
 113 }
 114
 115 // **********************************************************************************
 116 // timeRemaining
 117 //
 118 // **********************************************************************************
 119 unsigned long IOPMPowerSource::timeRemaining (void)
 120 {
 121   return bTimeRemaining;
 122 }
 123
 124 // **********************************************************************************
 125 // maxCapacity
 126 //
 127 // **********************************************************************************
 128 unsigned long IOPMPowerSource::maxCapacity (void)
 129 {
 130   return bMaxCapacity;
 131 }
 132
 133 // **********************************************************************************
 134 // curCapacity
 135 //
 136 // **********************************************************************************
 137 unsigned long IOPMPowerSource::curCapacity (void)
 138 {
 139   return bCurCapacity;
 140 }
 141
 142 // **********************************************************************************
 143 // currentDrawn
 144 //
 145 // **********************************************************************************
 146 long IOPMPowerSource::currentDrawn (void)
 147 {
 148   return bCurrent;
 149 }
 150
 151 // **********************************************************************************
 152 // voltage
 153 //
 154 // **********************************************************************************
 155
 156 unsigned long IOPMPowerSource::voltage (void)
 157 {
 158   return bVoltage;
 159 }
 160
 161 // **********************************************************************************
 162 // updateStatus
 163 //
 164 // **********************************************************************************
 165
 166 void IOPMPowerSource::updateStatus (void)
 167 {
 168
 169 }
 170
 171
 172
 173
 174