1 /* |
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2 * Copyright (c) 2007 - 2010 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: Takes control of device&vendor-specific control messages over EP0 |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include <usbman.h> |
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20 |
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21 #include "cusbdevcon.h" |
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22 #include "cusbstatewatcher.h" |
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23 #include "crequestshandler.h" |
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24 #include "cstatemachine.h" |
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25 #include "debug.h" |
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26 |
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27 // LITERALS |
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28 _LIT( KUsbDevConName, "UsbDevCon" ); |
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29 |
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30 // --------------------------------------------------------------------------- |
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31 // Two-phase construction |
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32 // --------------------------------------------------------------------------- |
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33 // |
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34 CUsbDevCon* CUsbDevCon::NewLC() |
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35 { |
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36 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::NewLC" ) ); |
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37 |
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38 CUsbDevCon* self = new (ELeave) CUsbDevCon(); |
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39 CleanupStack::PushL(self); |
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40 self->ConstructL(); |
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41 return self; |
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42 } |
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43 |
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44 // --------------------------------------------------------------------------- |
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45 // Two-phase construction |
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46 // --------------------------------------------------------------------------- |
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47 // |
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48 CUsbDevCon* CUsbDevCon::NewL() |
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49 { |
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50 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::NewL" ) ); |
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51 |
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52 CUsbDevCon* self = CUsbDevCon::NewLC(); |
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53 CleanupStack::Pop(self); |
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54 return self; |
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55 } |
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56 |
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57 // --------------------------------------------------------------------------- |
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58 // Two-phase construction |
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59 // --------------------------------------------------------------------------- |
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60 // |
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61 void CUsbDevCon::ConstructL() |
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62 { |
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63 |
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64 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ConstructL" ) ); |
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65 |
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66 // usbc |
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67 User::LeaveIfError(iLdd.Open(0)); |
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68 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ConstructL RDevUsbcClient opened OK" ) ); |
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69 |
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70 // usb manager |
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71 User::LeaveIfError(iUsbManager.Connect()); |
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72 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ConstructL RUsb connected OK" ) ); |
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73 |
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74 // usb watcher |
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75 User::LeaveIfError(iUsbWatcher.Connect()); |
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76 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ConstructL RUsbWatcher connected OK" ) ); |
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77 |
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78 // device state watcher |
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79 iUsbStateWatcher = CUsbStateWatcher::NewL(*this, iLdd); |
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80 |
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81 // Requests handler |
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82 iRequestsHandler = CRequestsHandler::NewL(iLdd, iUsbWatcher, iUsbManager); |
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83 |
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84 // state machine |
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85 iStateMachine = CStateMachine::NewL(*iRequestsHandler, iLdd); |
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86 |
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87 User::LeaveIfError(iShutdownTimer.CreateLocal()); |
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88 |
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89 // get usb state, and act accordingly to it |
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90 TUsbcDeviceState usbcstate(EUsbcDeviceStateUndefined); |
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91 iLdd.DeviceStatus(usbcstate); |
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92 |
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93 FTRACE(FPrint( |
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94 _L("[USBDEVCON]\tCUsbDevCon::ConstructL: Usbc state = %d" ),usbcstate)); |
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95 |
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96 ActAccordinglyToUsbStateL(usbcstate); |
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97 |
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98 } |
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99 |
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100 // --------------------------------------------------------------------------- |
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101 // Default construction |
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102 // --------------------------------------------------------------------------- |
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103 // |
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104 CUsbDevCon::CUsbDevCon() : CActive(EPriorityStandard), |
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105 iUsbStateWatcher(0), |
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106 iStateMachine (0), |
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107 iRequestsHandler(0), |
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108 iPrevUsbState(EUsbcDeviceStateUndefined) |
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109 { |
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110 CActiveScheduler::Add(this); |
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111 } |
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112 |
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113 // --------------------------------------------------------------------------- |
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114 // Destruction |
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115 // --------------------------------------------------------------------------- |
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116 // |
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117 CUsbDevCon::~CUsbDevCon() |
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118 { |
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119 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon" ) ); |
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120 |
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121 Cancel(); |
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122 |
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123 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon Cancel" ) ); |
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124 |
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125 delete iStateMachine; |
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126 |
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127 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon StateMachine" ) ); |
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128 |
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129 delete iRequestsHandler; |
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130 |
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131 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon RequestsHandler" ) ); |
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132 |
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133 delete iUsbStateWatcher; |
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134 |
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135 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon UsbStateWatcher" ) ); |
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136 |
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137 iUsbWatcher.Close(); |
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138 |
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139 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon UsbWatcher" ) ); |
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140 |
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141 iUsbManager.Close(); |
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142 |
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143 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon UsbManager" ) ); |
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144 |
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145 iLdd.Close(); |
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146 |
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147 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon LDD" ) ); |
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148 |
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149 iShutdownTimer.Close(); |
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150 |
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151 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::~CUsbDevCon Timer" ) ); |
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152 |
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153 } |
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154 |
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155 // --------------------------------------------------------------------------- |
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156 // Acts accordingly to USB state |
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157 // --------------------------------------------------------------------------- |
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158 // |
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159 void CUsbDevCon::ActAccordinglyToUsbStateL(TUsbcDeviceState aUsbcState) |
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160 { |
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161 |
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162 switch (aUsbcState) |
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163 { |
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164 case EUsbcDeviceStateUndefined: |
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165 { |
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166 |
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167 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Undefined" ) ); |
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168 |
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169 StopL(); |
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170 break; |
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171 } |
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172 |
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173 case EUsbcDeviceStateAttached: |
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174 { |
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175 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Attached, ignored" ) ); |
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176 |
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177 break; |
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178 } |
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179 |
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180 case EUsbcDeviceStateSuspended: |
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181 { |
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182 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Suspended" ) ); |
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183 // NO break here |
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184 } |
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185 case EUsbcDeviceStatePowered: |
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186 { |
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187 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Powered" ) ); |
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188 |
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189 // In powered or suspended state, we are not allowed to do any data |
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190 // communication. Hence if there are pending read/write requests, |
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191 // we need cancel them. |
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192 // Not call StopL() here because we do not want to shut down this |
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193 // process so earlier but in Undefined state. |
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194 if ( iStateMachine->IsStarted() ) |
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195 { |
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196 iStateMachine->Stop(); |
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197 // release device control |
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198 User::LeaveIfError(iLdd.ReleaseDeviceControl()); |
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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 case EUsbcDeviceStateDefault: |
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204 { |
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205 // The request will only be started from default state. |
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206 // If it has been started already, nothing will be done. |
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207 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Default" ) ); |
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208 |
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209 StartL(); |
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210 break; |
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211 } |
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212 |
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213 case EUsbcDeviceStateAddress: |
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214 { |
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215 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Addressed" ) ); |
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216 |
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217 StartL(); |
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218 break; |
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219 } |
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220 |
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221 case EUsbcDeviceStateConfigured: |
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222 { |
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223 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: Configured" ) ); |
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224 |
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225 StartL(); |
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226 |
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227 break; |
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228 } |
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229 default: |
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230 { |
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231 |
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232 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::ActAccordinglyToUsbStateL State: ***Unknown***" ) ); |
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233 |
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234 StopL(); |
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235 break; |
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236 } |
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237 } |
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238 |
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239 iPrevUsbState = aUsbcState; |
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240 |
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241 // listen to USB states change |
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242 iUsbStateWatcher->Activate(); |
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243 |
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244 } |
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245 |
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246 // --------------------------------------------------------------------------- |
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247 // Timer is completed |
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248 // --------------------------------------------------------------------------- |
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249 // |
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250 void CUsbDevCon::RunL() |
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251 { |
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252 FTRACE(FPrint( |
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253 _L("[USBDEVCON]\tCUsbDevCon::RunL: iStatus = %d" ),iStatus.Int())); |
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254 |
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255 if(KErrNone == iStatus.Int()) |
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256 { |
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257 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::RunL Exiting usbdevcon" ) ); |
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258 |
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259 // Shutdown timer is finished, exit program |
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260 CActiveScheduler::Stop(); // destruct resources |
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261 } |
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262 } |
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263 |
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264 // --------------------------------------------------------------------------- |
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265 // Cancellation |
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266 // --------------------------------------------------------------------------- |
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267 // |
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268 void CUsbDevCon::DoCancel() |
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269 { |
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270 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::DoCancel" ) ) |
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271 iShutdownTimer.Cancel(); |
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272 } |
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273 |
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274 // ---------------------------------------------------------------------------- |
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275 // Standard active object error function. |
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276 // ---------------------------------------------------------------------------- |
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277 // |
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278 TInt CUsbDevCon::RunError( TInt /*aError*/ ) |
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279 { |
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280 return KErrNone; |
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281 } |
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282 |
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283 // --------------------------------------------------------------------------- |
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284 // Starts UsbDevCon services |
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285 // --------------------------------------------------------------------------- |
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286 // |
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287 void CUsbDevCon::StartL() |
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288 { |
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289 |
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290 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::StartL" ) ); |
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291 |
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292 if(!iStateMachine->IsStarted()) |
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293 { |
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294 // set device control |
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295 User::LeaveIfError(iLdd.SetDeviceControl()); |
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296 |
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297 // start state machine |
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298 iStateMachine->Start(); |
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299 |
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300 } |
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301 |
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302 // Cancel shutdown timer, if it is started |
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303 iShutdownTimer.Cancel(); |
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304 } |
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305 |
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306 // --------------------------------------------------------------------------- |
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307 // Stops UsbDevCon services |
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308 // --------------------------------------------------------------------------- |
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309 // |
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310 void CUsbDevCon::StopL() |
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311 { |
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312 |
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313 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::StopL" ) ); |
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314 |
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315 if(iStateMachine->IsStarted()) |
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316 { |
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317 |
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318 // stop state machine |
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319 iStateMachine->Stop(); |
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320 |
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321 // release device control |
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322 User::LeaveIfError(iLdd.ReleaseDeviceControl()); |
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323 |
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324 } |
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325 |
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326 if(!IsActive()) // not waiting for timer |
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327 { |
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328 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::StopL Starting timer" ) ); |
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329 // run timer |
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330 iShutdownTimer.Cancel(); |
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331 |
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332 // RunL will be called after KInactiveTimeForShutDown milliseconds |
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333 iShutdownTimer.After(iStatus, TTimeIntervalMicroSeconds32(KInactiveTimeForShutDown)); |
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334 SetActive(); |
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335 FLOG( _L( "[USBDEVCON]\tCUsbDevCon::StopL Timer is started" ) ); |
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336 } |
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337 } |
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338 |
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339 |
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340 // ---------------------------------------------------------------------------- |
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341 // Constructs and installs the active scheduler, constructs UsbDevCon object. |
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342 // ---------------------------------------------------------------------------- |
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343 // |
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344 static void StartUsbDevConL() |
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345 { |
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346 |
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347 FLOG( _L( "[USBDEVCON]\tStartUsbDevConL" ) ); |
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348 |
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349 // Construct and install the active scheduler |
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350 CActiveScheduler *myScheduler = new ( ELeave ) CActiveScheduler(); |
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351 |
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352 // Push onto the cleanup stack |
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353 CleanupStack::PushL( myScheduler ); |
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354 |
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355 // Install as the active scheduler |
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356 CActiveScheduler::Install( myScheduler ); |
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357 |
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358 CUsbDevCon* instance = CUsbDevCon::NewLC(); |
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359 |
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360 RProcess::Rendezvous(KErrNone); // signal to starter process, that usbdevcon started OK or failed to start |
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361 |
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362 FLOG( _L( "[USBDEVCON]\tStartUsbDevConL Usbdevcon is started successfully" ) ); |
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363 |
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364 // returns only when UsbDevCon closing |
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365 CActiveScheduler::Start(); |
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366 |
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367 CleanupStack::PopAndDestroy( instance ); |
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368 CleanupStack::PopAndDestroy( myScheduler ); |
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369 } |
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370 |
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371 // --------------------------------------------------------------------------- |
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372 // Main function of the application executable. |
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373 // --------------------------------------------------------------------------- |
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374 // |
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375 GLDEF_C TInt E32Main() |
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376 { |
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377 TInt err; |
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378 |
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379 // rename the thread so it is easy to find the panic application |
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380 err = User::RenameThread(KUsbDevConName); |
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381 |
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382 if(KErrNone != err) |
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383 { |
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384 return err; |
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385 } |
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386 |
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387 __UHEAP_MARK; |
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388 |
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389 // create clean-up stack |
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390 CTrapCleanup* cleanup = CTrapCleanup::New(); |
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391 |
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392 TRAP( err, StartUsbDevConL() ); |
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393 |
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394 delete cleanup; // destroy clean-up stack |
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395 __UHEAP_MARKEND; |
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396 |
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397 return err; |
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398 } |
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