1 /* |
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2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implementation |
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15 * |
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16 */ |
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17 |
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18 #include <usbotgdefs.h> |
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19 |
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20 #include "cusbvbusobserver.h" |
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21 |
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22 #include "definitions.h" |
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23 #include "debug.h" |
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24 #include "panic.h" |
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25 |
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26 // --------------------------------------------------------------------------- |
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27 // |
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28 // --------------------------------------------------------------------------- |
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29 // |
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30 CUsbVBusObserver::CUsbVBusObserver() : |
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31 CActive(EPriorityStandard) |
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32 { |
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33 CActiveScheduler::Add(this); |
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34 } |
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35 |
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36 // --------------------------------------------------------------------------- |
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37 // |
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38 // --------------------------------------------------------------------------- |
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39 // |
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40 void CUsbVBusObserver::ConstructL() |
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41 { |
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42 LOG_FUNC |
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43 |
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44 LEAVEIFERROR(iVBus.Attach(KUidUsbManCategory, |
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45 KUsbOtgVBusPoweredProperty)); |
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46 |
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47 } |
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48 |
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49 // --------------------------------------------------------------------------- |
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50 // |
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51 // --------------------------------------------------------------------------- |
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52 // |
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53 CUsbVBusObserver* CUsbVBusObserver::NewL() |
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54 { |
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55 LOG_FUNC |
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56 |
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57 CUsbVBusObserver* self = new (ELeave) CUsbVBusObserver(); |
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58 CleanupStack::PushL(self); |
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59 self->ConstructL(); |
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60 CleanupStack::Pop(self); |
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61 return self; |
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62 } |
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63 |
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64 // --------------------------------------------------------------------------- |
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65 // |
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66 // --------------------------------------------------------------------------- |
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67 // |
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68 CUsbVBusObserver::~CUsbVBusObserver() |
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69 { |
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70 LOG_FUNC |
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71 |
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72 Cancel(); |
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73 |
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74 iVBus.Close(); |
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75 |
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76 iObservers.Close(); |
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77 |
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78 } |
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79 |
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80 // --------------------------------------------------------------------------- |
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81 // |
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82 // --------------------------------------------------------------------------- |
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83 // |
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84 CUsbVBusObserver::TState CUsbVBusObserver::VBus() /* not const, because for some reason RProperty::Get is not const */ |
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85 { |
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86 |
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87 TInt val(0); |
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88 |
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89 TInt err = iVBus.Get(val); |
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90 |
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91 if (KErrNone != err) |
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92 { |
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93 LOG("CanNotGetVBusProperty" ) |
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94 PANIC( ECanNotGetVBusProperty); |
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95 } |
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96 |
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97 return (0 == val ? EVBusDown : EVBusUp); |
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98 } |
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99 |
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100 // --------------------------------------------------------------------------- |
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101 // |
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102 // --------------------------------------------------------------------------- |
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103 // |
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104 void CUsbVBusObserver::SubscribeL(MUsbVBusObserver& aObserver) |
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105 { |
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106 LOG_FUNC |
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107 |
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108 // check if the same observer already exist in a list |
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109 if (KErrNotFound != iObservers.Find(&aObserver)) |
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110 { |
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111 LOG( "Observer already exists" ); |
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112 PANIC( EObserverAlreadyExists); |
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113 return; |
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114 } |
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115 |
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116 iObservers.AppendL(&aObserver); |
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117 |
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118 if (KFirst == iObservers.Count()) // first item |
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119 { |
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120 iVBus.Subscribe(iStatus); |
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121 SetActive(); |
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122 } |
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123 } |
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124 |
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125 // --------------------------------------------------------------------------- |
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126 // |
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127 // --------------------------------------------------------------------------- |
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128 // |
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129 void CUsbVBusObserver::UnsubscribeL(MUsbVBusObserver& aObserver) |
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130 { |
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131 LOG_FUNC |
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132 |
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133 TInt i(iObservers.Find(&aObserver)); |
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134 if (KErrNotFound == i) |
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135 { |
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136 LOG("Observer not found" ); |
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137 PANIC( ECanNotFindVBusObserver); |
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138 return; |
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139 } |
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140 |
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141 iObservers.Remove(i); |
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142 |
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143 if (0 == iObservers.Count()) // no observers anymore |
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144 { |
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145 // cancel pending request, if any |
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146 Cancel(); |
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147 } |
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148 } |
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149 |
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150 // --------------------------------------------------------------------------- |
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151 // |
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152 // --------------------------------------------------------------------------- |
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153 // |
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154 void CUsbVBusObserver::RunL() |
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155 { |
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156 LOG_FUNC |
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157 |
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158 LOG1( "iStatus = %d" , iStatus.Int()); |
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159 |
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160 // if error occured, tell to Observers |
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161 if (KErrNone != iStatus.Int()) |
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162 { |
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163 for (TInt i(0); i < iObservers.Count(); ++i) |
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164 { |
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165 iObservers[i]->VBusObserverErrorL(iStatus.Int()); |
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166 } |
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167 return; |
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168 } |
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169 |
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170 // re-issue request first |
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171 iVBus.Subscribe(iStatus); |
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172 SetActive(); |
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173 |
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174 // then process property change |
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175 TState state(VBus()); |
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176 |
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177 // report change |
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178 switch (state) |
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179 { |
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180 case EVBusUp: |
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181 { |
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182 LOG("VBus UP"); |
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183 |
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184 for (TInt i(0); i < iObservers.Count(); ++i) |
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185 { |
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186 iObservers[i]->VBusUpL(); |
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187 } |
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188 break; |
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189 } |
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190 ; |
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191 |
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192 case EVBusDown: |
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193 { |
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194 LOG("VBus DOWN"); |
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195 |
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196 for (TInt i(0); i < iObservers.Count(); ++i) |
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197 { |
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198 iObservers[i]->VBusDownL(); |
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199 } |
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200 break; |
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201 } |
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202 ; |
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203 |
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204 default: |
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205 { |
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206 LOG("WrongVBusState"); |
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207 PANIC( EWrongVBusState); |
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208 } |
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209 } |
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210 } |
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211 |
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212 // --------------------------------------------------------------------------- |
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213 // |
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214 // --------------------------------------------------------------------------- |
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215 // |
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216 void CUsbVBusObserver::DoCancel() |
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217 { |
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218 iVBus.Cancel(); |
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219 } |
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220 |
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221 // --------------------------------------------------------------------------- |
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222 // |
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223 // --------------------------------------------------------------------------- |
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224 // |
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225 TInt CUsbVBusObserver::RunError(TInt aError) |
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226 { |
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227 LOG_FUNC |
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228 |
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229 LOG1( "aError = %d" , aError); |
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230 |
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231 // try to continue |
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232 return KErrNone; |
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233 } |
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