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1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // e32\drivers\iic.cpp |
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15 // IIC Controller and public API Implementation |
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16 // |
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17 |
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18 #include <drivers/iic.h> |
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19 #include <drivers/iic_channel.h> |
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20 #include "iic_priv.h" |
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21 |
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22 #ifdef IIC_INSTRUMENTATION_MACRO |
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23 #include <drivers/iic_trace.h> |
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24 #endif |
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25 |
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26 // Global Controller pointer |
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27 static DIicBusController* TheController = NULL; |
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28 |
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29 // |
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30 // Implementation of generic IicBus API for client interface |
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31 // |
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32 EXPORT_C TInt IicBus::QueueTransaction(TInt aBusId, TIicBusTransaction* aTransaction) |
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33 { |
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34 #ifdef IIC_INSTRUMENTATION_MACRO |
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35 IIC_MQTRANSSYNC_START_PIL_TRACE; |
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36 #endif |
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37 TInt r=TheController->QueueTransaction(aBusId, aTransaction); |
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38 |
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39 #ifdef IIC_INSTRUMENTATION_MACRO |
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40 IIC_MQTRANSSYNC_END_PIL_TRACE; |
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41 #endif |
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42 return r; |
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43 } |
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44 |
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45 EXPORT_C TInt IicBus::QueueTransaction(TInt aBusId, TIicBusTransaction* aTransaction, TIicBusCallback* aCallback) |
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46 { |
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47 #ifdef IIC_INSTRUMENTATION_MACRO |
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48 IIC_MQTRANSASYNC_START_PIL_TRACE; |
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49 #endif |
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50 TInt r=TheController->QueueTransaction(aBusId, aTransaction, aCallback); |
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51 |
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52 #ifdef IIC_INSTRUMENTATION_MACRO |
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53 IIC_MQTRANSASYNC_END_PIL_TRACE; |
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54 #endif |
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55 return r; |
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56 } |
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57 |
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58 EXPORT_C TInt IicBus::CancelTransaction(TInt aBusId, TIicBusTransaction* aTransaction) |
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59 { |
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60 #ifdef IIC_INSTRUMENTATION_MACRO |
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61 IIC_MCANCELTRANS_START_PIL_TRACE; |
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62 #endif |
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63 TInt r=TheController->CancelTransaction(aBusId, aTransaction); |
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64 |
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65 #ifdef IIC_INSTRUMENTATION_MACRO |
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66 IIC_MCANCELTRANS_END_PIL_TRACE; |
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67 #endif |
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68 return r; |
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69 } |
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70 |
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71 EXPORT_C TInt IicBus::CaptureChannel(TInt aBusId, TDes8* aConfigHdr, TIicBusSlaveCallback* aCallback, TInt& aChannelId, TBool aAsynch) |
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72 { |
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73 #ifdef IIC_INSTRUMENTATION_MACRO |
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74 if(!aAsynch) |
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75 { |
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76 IIC_SCAPTCHANSYNC_START_PIL_TRACE; |
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77 } |
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78 else |
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79 { |
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80 IIC_SCAPTCHANASYNC_START_PIL_TRACE; |
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81 } |
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82 #endif |
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83 TInt r=TheController->CaptureChannel(aBusId, aConfigHdr, aCallback, aChannelId, aAsynch); |
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84 |
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85 #ifdef IIC_INSTRUMENTATION_MACRO |
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86 if(!aAsynch) |
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87 { |
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88 IIC_SCAPTCHANSYNC_END_PIL_TRACE; |
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89 } |
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90 #endif |
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91 return r; |
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92 } |
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93 |
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94 EXPORT_C TInt IicBus::ReleaseChannel(TInt aChannelId) |
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95 { |
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96 #ifdef IIC_INSTRUMENTATION_MACRO |
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97 IIC_SRELCHAN_START_PIL_TRACE; |
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98 #endif |
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99 TInt r=TheController->ReleaseChannel(aChannelId); |
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100 |
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101 #ifdef IIC_INSTRUMENTATION_MACRO |
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102 IIC_SRELCHAN_END_PIL_TRACE; |
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103 #endif |
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104 return r; |
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105 } |
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106 |
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107 EXPORT_C TInt IicBus::RegisterRxBuffer(TInt aChannelId, TPtr8 aRxBuffer, TInt8 aBufGranularity, TInt8 aNumWords, TInt8 aOffset) |
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108 { |
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109 #ifdef IIC_INSTRUMENTATION_MACRO |
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110 IIC_SREGRXBUF_START_PIL_TRACE; |
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111 #endif |
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112 TInt r=TheController->RegisterRxBuffer(aChannelId, aRxBuffer, aBufGranularity, aNumWords, aOffset); |
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113 |
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114 #ifdef IIC_INSTRUMENTATION_MACRO |
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115 IIC_SREGRXBUF_END_PIL_TRACE; |
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116 #endif |
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117 return r; |
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118 } |
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119 |
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120 EXPORT_C TInt IicBus::RegisterTxBuffer(TInt aChannelId, TPtr8 aTxBuffer, TInt8 aBufGranularity, TInt8 aNumWords, TInt8 aOffset) |
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121 { |
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122 #ifdef IIC_INSTRUMENTATION_MACRO |
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123 IIC_SREGTXBUF_START_PIL_TRACE; |
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124 #endif |
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125 TInt r=TheController->RegisterTxBuffer(aChannelId, aTxBuffer, aBufGranularity, aNumWords, aOffset); |
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126 |
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127 #ifdef IIC_INSTRUMENTATION_MACRO |
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128 IIC_SREGTXBUF_END_PIL_TRACE; |
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129 #endif |
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130 return r; |
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131 } |
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132 |
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133 EXPORT_C TInt IicBus::SetNotificationTrigger(TInt aChannelId, TInt aTrigger) |
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134 { |
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135 #ifdef IIC_INSTRUMENTATION_MACRO |
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136 IIC_SNOTIFTRIG_START_PIL_TRACE; |
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137 #endif |
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138 TInt r=TheController->SetNotificationTrigger(aChannelId, aTrigger); |
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139 |
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140 #ifdef IIC_INSTRUMENTATION_MACRO |
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141 IIC_SNOTIFTRIG_END_PIL_TRACE; |
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142 #endif |
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143 return r; |
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144 } |
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145 |
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146 EXPORT_C TInt IicBus::StaticExtension(TUint aId, TUint aFunction, TAny* aParam1, TAny* aParam2) |
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147 { |
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148 return(TheController->StaticExtension(aId, aFunction, aParam1, aParam2)); |
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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 // Bus Controller |
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154 // |
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155 |
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156 // auxiliary function for ordering entries in the array of channels |
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157 TInt DIicBusController::OrderEntries(const DIicBusChannel& aMatch, const DIicBusChannel& aEntry) |
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158 { |
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159 TUint8 l=(TUint8)aMatch.ChannelNumber(); |
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160 TUint8 r=(TUint8)aEntry.ChannelNumber(); |
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161 if(l>r) |
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162 return -1; |
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163 else if(l<r) |
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164 return 1; |
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165 else |
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166 return 0; |
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167 } |
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168 |
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169 // global ordering object to be passed to RPointerArray InsertInOrderXXX and FindInOrder |
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170 TLinearOrder<DIicBusChannel> EntryOrder(DIicBusController::OrderEntries); |
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171 |
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172 // Implementation for DIicBusController |
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173 // |
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174 |
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175 TInt DIicBusController::Create() |
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176 { |
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177 TInt r=KErrNone; |
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178 iChanLock = new TSpinLock(TSpinLock::EOrderGenericIrqLow2); // Semi-arbitrary, low priority value |
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179 iCaptLock = new TSpinLock(TSpinLock::EOrderGenericIrqLow2); // Semi-arbitrary, low priority value |
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180 if((iChanLock == NULL)||(iCaptLock == NULL)) |
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181 { |
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182 delete iChanLock; |
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183 delete iCaptLock; |
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184 r=KErrNoMemory; |
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185 } |
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186 return r; |
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187 } |
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188 |
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189 DIicBusController::~DIicBusController() |
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190 { |
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191 #ifdef IIC_SIMULATED_PSL |
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192 for(TInt i=0; i<iChannelArray.Count(); i++) |
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193 { |
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194 DIicBusChannel* ptr=iChannelArray[i]; |
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195 // Remove the channel from the array |
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196 iChannelArray.Remove(i); |
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197 // Delete the channel object |
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198 delete ptr; |
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199 }; |
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200 |
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201 iChannelArray.Reset(); |
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202 delete iChanLock; |
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203 delete iCaptLock; |
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204 #endif |
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205 } |
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206 |
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207 TInt DIicBusController::GetChanWriteAccess() |
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208 { |
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209 // Can only have one insertion or removal active at any one time |
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210 // Can not perform an insertion or removal while a read is in progress |
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211 // If either of the two above conditions exist, return KErrInUse |
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212 // Otherwise, set the flag to indicate that a write is in progress |
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213 // and return KErrNone. |
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214 TInt chanIntState=0; |
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215 chanIntState=__SPIN_LOCK_IRQSAVE(*iChanLock); |
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216 if(iChanRwFlags != 0) |
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217 { |
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218 __SPIN_UNLOCK_IRQRESTORE(*iChanLock,chanIntState); |
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219 return KErrInUse; |
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220 } |
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221 iChanRwFlags |= EWriteInProgress; |
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222 __SPIN_UNLOCK_IRQRESTORE(*iChanLock,chanIntState); |
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223 return KErrNone; |
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224 } |
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225 |
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226 void DIicBusController::FreeChanWriteAccess() |
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227 { |
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228 // If an insertion or removal is in progress, no other modifying operation |
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229 // can be active. Reads are also not permitted - so iChanRwFlags can only be |
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230 // EWriteInProgress. |
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231 __ASSERT_DEBUG(iChanRwFlags == EWriteInProgress, Kern::Fault(KIicPanic,__LINE__)); |
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232 TInt chanIntState=0; |
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233 chanIntState=__SPIN_LOCK_IRQSAVE(*iChanLock); |
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234 iChanRwFlags &= ~EWriteInProgress; |
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235 __SPIN_UNLOCK_IRQRESTORE(*iChanLock,chanIntState); |
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236 } |
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237 |
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238 TInt DIicBusController::GetChanReadAccess() |
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239 { |
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240 // No reads are permitted while an insertion or removal is in progress |
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241 // If one of the above operations is in progress return KErrInUse |
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242 // Can have several concurrent reads at any one time - so increment |
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243 // the count of such operations as well as ensuring the flag is set to indicate |
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244 // a read is in progress |
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245 TInt chanIntState=0; |
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246 chanIntState=__SPIN_LOCK_IRQSAVE(*iChanLock); |
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247 if(iChanRwFlags == EWriteInProgress) |
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248 { |
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249 __SPIN_UNLOCK_IRQRESTORE(*iChanLock,chanIntState); |
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250 return KErrInUse; |
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251 } |
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252 __ASSERT_DEBUG(iChanRdCount!=0xFFFFFFFF, Kern::Fault(KIicPanic,__LINE__)); // Overflow |
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253 iChanRdCount++; |
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254 iChanRwFlags |= EReadInProgress; |
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255 __SPIN_UNLOCK_IRQRESTORE(*iChanLock,chanIntState); |
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256 return KErrNone; |
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257 } |
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258 |
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259 void DIicBusController::FreeChanReadAccess() |
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260 { |
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261 // No insertions or removals are permitted while a read is in progress |
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262 // so iChanRwFlags can only be EReadInProgress |
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263 // Multiple reads can be in progress concurrently, so the count must be decremented |
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264 TInt chanIntState=0; |
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265 chanIntState=__SPIN_LOCK_IRQSAVE(*iChanLock); |
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266 __ASSERT_DEBUG(iChanRwFlags == EReadInProgress, Kern::Fault(KIicPanic,__LINE__)); |
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267 __ASSERT_DEBUG(iChanRdCount>0, Kern::Fault(KIicPanic,__LINE__)); |
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268 iChanRdCount--; |
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269 if(iChanRdCount == 0) |
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270 iChanRwFlags &= ~EReadInProgress; |
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271 __SPIN_UNLOCK_IRQRESTORE(*iChanLock,chanIntState); |
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272 } |
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273 |
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274 TInt DIicBusController::RequestTypeSupported(const TInt aBusId, DIicBusChannelMaster* const aChannel) |
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275 { |
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276 TInt32 reqBusType; |
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277 reqBusType = GET_BUS_TYPE(aBusId); |
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278 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::RequestTypeSupported, BusType=0x%x\n", reqBusType)); |
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279 |
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280 if(reqBusType != aChannel->BusType()) |
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281 { |
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282 return KErrNotSupported; |
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283 } |
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284 |
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285 return KErrNone; |
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286 } |
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287 |
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288 |
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289 EXPORT_C TInt DIicBusController::RegisterChannels(DIicBusChannel** aListChannels, TInt aNumberChannels) |
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290 { |
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291 // To be used by Channel implementations to register a list of supported channels |
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292 __KTRACE_OPT(KIIC, Kern::Printf("\nDIicBusController::RegisterChannels, aListChannels=0x%x, aNumberChannels=%d\n",aListChannels,aNumberChannels)); |
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293 __ASSERT_DEBUG(aListChannels!=NULL, Kern::Fault(KIicPanic,__LINE__)); |
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294 |
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295 RPointerArray<DIicBusChannel>* chanArray = TheController->ChannelArray(); |
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296 |
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297 #ifdef IIC_INSTRUMENTATION_MACRO |
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298 IIC_REGISTERCHANS_START_PIL_TRACE; |
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299 #endif |
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300 // Get access to the channel pointer array - exit if it is currently being modfied |
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301 TInt r=KErrNone; |
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302 if((r=TheController->GetChanWriteAccess()) == KErrNone) |
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303 { |
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304 #ifdef _DEBUG |
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305 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::RegisterChannels - On entry, iChannelArray ...\n")); |
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306 TheController->DumpChannelArray(); |
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307 #endif |
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308 // Loop for aNumberChannels and write directly to the channel array |
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309 DIicBusChannel** chanIterator = aListChannels; |
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310 for(TInt iteration = 0; iteration < aNumberChannels; ++iteration, ++chanIterator) |
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311 { |
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312 DIicBusChannel* chanPtr = *chanIterator; |
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313 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::RegisterChannels - adding channel number %d\n",chanPtr->ChannelNumber())); |
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314 TInt r = chanArray->InsertInOrder(chanPtr,EntryOrder); |
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315 if(r!=KErrNone) |
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316 break; |
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317 } |
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318 |
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319 #ifdef _DEBUG |
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320 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::RegisterChannels - On exit, iChannelArray ...\n")); |
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321 TheController->DumpChannelArray(); |
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322 #endif |
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323 TheController->FreeChanWriteAccess(); |
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324 } |
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325 else |
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326 { |
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327 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::GetChanWriteAccess returned %d\n",r)); |
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328 } |
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329 |
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330 #ifdef IIC_INSTRUMENTATION_MACRO |
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331 IIC_REGISTERCHANS_END_PIL_TRACE; |
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332 #endif |
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333 return r; |
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334 } |
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335 |
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336 |
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337 EXPORT_C TInt DIicBusController::DeRegisterChannel(DIicBusChannel* aChannel) |
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338 { |
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339 // To be used by Channel implementations to deregister a channel |
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340 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::DeRegisterChannel, aChannel=0x%x\n",aChannel)); |
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341 if(aChannel == NULL) |
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342 return KErrArgument; |
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343 |
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344 RPointerArray<DIicBusChannel>* chanArray = TheController->ChannelArray(); |
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345 |
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346 #ifdef IIC_INSTRUMENTATION_MACRO |
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347 IIC_DEREGISTERCHAN_START_PIL_TRACE; |
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348 #endif |
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349 TInt r=KErrNone; |
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350 // Get access to the channel pointer array - exit if it is currently unavailable |
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351 // Gaining write access will prevent a client of a Master Channel from instigating a new QueueTransaction |
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352 // (or CancelTransaction), and it will obstruct a client of a Slave Channel in CaptureChannel. |
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353 if((r=TheController->GetChanWriteAccess())!=KErrNone) |
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354 return r; |
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355 |
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356 // Check channel is registered |
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357 TInt chanIndex = chanArray->FindInOrder(aChannel,EntryOrder); |
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358 if(chanIndex<0) |
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359 { |
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360 TheController->FreeChanWriteAccess(); |
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361 return KErrNotFound; |
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362 } |
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363 |
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364 #ifdef _DEBUG |
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365 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::DeRegisterChannel - On entry, iChannelArray ...\n")); |
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366 TheController->DumpChannelArray(); |
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367 #endif |
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368 |
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369 // Remove the channel from the array |
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370 // Note that this does not delete the channel object |
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371 chanArray->Remove(chanIndex); |
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372 |
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373 #ifdef _DEBUG |
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374 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::DeRegisterChannel - On exit, iChannelArray ...\n")); |
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375 TheController->DumpChannelArray(); |
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376 #endif |
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377 TheController->FreeChanWriteAccess(); |
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378 |
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379 #ifdef IIC_INSTRUMENTATION_MACRO |
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380 IIC_DEREGISTERCHAN_END_PIL_TRACE; |
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381 #endif |
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382 return KErrNone; |
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383 } |
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384 |
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385 TInt DIicBusController::FindCapturedChanById(TCapturedChannel aCapturedChan, TInt& aIndex) |
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386 { |
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387 TInt index=0; |
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388 TInt r=KErrNotFound; |
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389 do |
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390 { |
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391 if(iCapturedChannels[index].iChannelId == aCapturedChan.iChannelId) |
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392 { |
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393 aIndex=index; |
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394 r=KErrNone; |
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395 } |
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396 index++; |
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397 } while ((index < KMaxNumCapturedChannels)&&(r == KErrNotFound)); |
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398 return r; |
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399 } |
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400 |
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401 TInt DIicBusController::FindCapturedChan(TCapturedChannel aCapturedChan, TInt& aIndex) |
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402 { |
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403 TInt index=0; |
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404 TInt r=KErrNotFound; |
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405 do |
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406 { |
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407 if(iCapturedChannels[index] == aCapturedChan) |
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408 { |
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409 aIndex=index; |
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410 r=KErrNone; |
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411 } |
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412 index++; |
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413 } while ((index < KMaxNumCapturedChannels)&&(r == KErrNotFound)); |
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414 return r; |
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415 } |
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416 |
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417 TInt DIicBusController::InsertCaptChanInArray(TCapturedChannel aCapturedChan) |
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418 { |
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419 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::InsertCaptChanInArray \n")); |
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420 // Ensure the channel hasn't already been inserted in the array |
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421 // If found, fault the Kernel |
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422 TInt dumInt = 0; |
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423 TInt r=FindCapturedChan(aCapturedChan,dumInt); |
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424 __ASSERT_DEBUG(r!=KErrNone, Kern::Fault(KIicPanic,__LINE__)); |
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425 |
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426 // Loop the array and insert in the first available slot |
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427 // If no slots are available return KErrNotReady |
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428 TInt index=0; |
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429 TCapturedChannel emptyChan; |
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430 for(;index<KMaxNumCapturedChannels;++index) |
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431 { |
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432 if(iCapturedChannels[index] == emptyChan) |
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433 { |
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434 // Found a space |
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435 iCapturedChannels[index]=aCapturedChan; |
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436 break; |
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437 } |
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438 } |
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439 if(index>=KMaxNumCapturedChannels) |
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440 r = KErrNotReady; |
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441 return r; |
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442 } |
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443 |
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444 TInt DIicBusController::RemoveCaptChanFromArray(TCapturedChannel aCapturedChan) |
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445 { |
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446 // Remove the entry from the array |
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447 // If the entry is not present return KErrArgument |
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448 TInt index=-1; |
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449 TInt r=FindCapturedChan(aCapturedChan,index); |
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450 if((r!=KErrNone)||(index>=KMaxNumCapturedChannels)) |
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451 return KErrArgument; |
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452 iCapturedChannels[index].iChanPtr=NULL; |
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453 iCapturedChannels[index].iChannelId=0; |
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454 return KErrNone; |
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455 } |
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456 |
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457 |
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458 TInt DIicBusController::InstallCapturedChannel(const TInt aChannelId, const DIicBusChannelSlave* aChanPtr) |
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459 { |
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460 #ifdef _DEBUG |
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461 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::InstallCapturedChannel - On entry, iCapturedChannels ...\n")); |
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462 DumpCapturedChannels(); |
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463 #endif |
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464 TInt r=KErrNone; |
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465 TCapturedChannel capturedChan((TInt)aChannelId,(DIicBusChannelSlave*)aChanPtr); |
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466 // Because insertions are bounded by the size of the array and do not involve allocating |
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467 // or freeing memory, simply take the spinlock at the start of the operation and release at the end |
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468 TInt captIntState=__SPIN_LOCK_IRQSAVE(*iCaptLock); |
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469 r=InsertCaptChanInArray(capturedChan); |
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470 __SPIN_UNLOCK_IRQRESTORE(*iCaptLock,captIntState); |
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471 if(r!=KErrNone) |
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472 return r; |
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473 |
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474 #ifdef _DEBUG |
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475 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::InstallCapturedChannel - On exit, iCapturedChannels ...\n")); |
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476 DumpCapturedChannels(); |
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477 #endif |
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478 return KErrNone; |
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479 } |
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480 |
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481 TInt DIicBusController::DeInstallCapturedChannel(const TInt aChannelId, const DIicBusChannelSlave* aChanPtr) |
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482 { |
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483 #ifdef _DEBUG |
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484 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::DeInstallCapturedChannel - On entry, iCapturedChannels ...\n")); |
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485 DumpCapturedChannels(); |
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486 #endif |
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487 TInt r = KErrNone; |
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488 TCapturedChannel capturedChan((TInt) aChannelId, (DIicBusChannelSlave*) aChanPtr); |
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489 // Because removals are bounded by the size of the array and do not involve allocating |
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490 // or freeing memory, simply take the spinlock at the start of the operation and release at the end |
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491 TInt captIntState = __SPIN_LOCK_IRQSAVE(*iCaptLock); |
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492 r = RemoveCaptChanFromArray(capturedChan); |
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493 __SPIN_UNLOCK_IRQRESTORE(*iCaptLock, captIntState); |
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494 if(r != KErrNone) |
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495 return r; |
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496 |
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497 #ifdef _DEBUG |
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498 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::DeInstallCapturedChannel - On exit, iCapturedChannels ...\n")); |
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499 DumpCapturedChannels(); |
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500 #endif |
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501 return KErrNone; |
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502 } |
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503 |
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504 // Master-side API |
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505 TInt DIicBusController::QueueTransaction(TInt aBusId, TIicBusTransaction* aTransaction) |
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506 { |
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507 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::QueueTransaction, aBusId=0x%x,aTransaction=0x%x\n", aBusId, aTransaction)); |
|
508 if(!aTransaction) |
|
509 { |
|
510 return KErrArgument; |
|
511 } |
|
512 |
|
513 // Get a pointer to the channel |
|
514 TInt dumInt = 0; |
|
515 DIicBusChannel* chanPtr = NULL; |
|
516 // Can only read the channel array if it is not currently being modified |
|
517 TInt r = GetChanReadAccess(); |
|
518 if(r != KErrNone) |
|
519 { |
|
520 return r; |
|
521 } |
|
522 r = GetChanPtr(aBusId, dumInt, chanPtr); |
|
523 if(r == KErrNone) |
|
524 { |
|
525 if(!chanPtr) |
|
526 { |
|
527 r = KErrArgument; |
|
528 } |
|
529 else |
|
530 { |
|
531 switch(chanPtr->ChannelType()) |
|
532 { |
|
533 // QueueTransaction requests are only supported by channels in Master mode. |
|
534 case DIicBusChannel::ESlave: |
|
535 { |
|
536 r = KErrNotSupported; |
|
537 break; |
|
538 } |
|
539 // If the request is supported by the Master channel, send it to the channel for processing in its thread |
|
540 case DIicBusChannel::EMasterSlave: |
|
541 { |
|
542 r = RequestTypeSupported(aBusId, ((DIicBusChannelMasterSlave*)chanPtr)->iMasterChannel); |
|
543 if(r == KErrNone) |
|
544 { |
|
545 aTransaction->iBusId = aBusId; |
|
546 r = (((DIicBusChannelMasterSlave*) chanPtr)->QueueTransaction(aTransaction)); |
|
547 } |
|
548 break; |
|
549 } |
|
550 case DIicBusChannel::EMaster: |
|
551 { |
|
552 r = RequestTypeSupported(aBusId, (DIicBusChannelMaster*)chanPtr); |
|
553 if(r == KErrNone) |
|
554 { |
|
555 aTransaction->iBusId = aBusId; |
|
556 r = (((DIicBusChannelMaster*) chanPtr)->QueueTransaction(aTransaction)); |
|
557 } |
|
558 break; |
|
559 } |
|
560 default: |
|
561 { |
|
562 r = KErrGeneral; |
|
563 } |
|
564 } |
|
565 } |
|
566 } |
|
567 FreeChanReadAccess(); |
|
568 return r; |
|
569 } |
|
570 |
|
571 TInt DIicBusController::QueueTransaction(TInt aBusId, TIicBusTransaction* aTransaction, TIicBusCallback* aCallback) |
|
572 { |
|
573 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::QueueTransaction, aBusId=0x%x,aTransaction=0x%x,aCallback=0x%x\n",aBusId,aTransaction,aCallback)); |
|
574 if(!aTransaction || !aCallback) |
|
575 { |
|
576 return KErrArgument; |
|
577 } |
|
578 |
|
579 // Get a pointer to the channel |
|
580 TInt dumInt = 0; |
|
581 DIicBusChannel* chanPtr = NULL; |
|
582 // Can only read the channel array if it is not currently being modified |
|
583 TInt r = GetChanReadAccess(); |
|
584 if(r == KErrNone) |
|
585 { |
|
586 r = GetChanPtr(aBusId, dumInt, chanPtr); |
|
587 if(r == KErrNone) |
|
588 { |
|
589 if(!chanPtr) |
|
590 { |
|
591 r = KErrArgument; |
|
592 } |
|
593 else |
|
594 { |
|
595 switch(chanPtr->ChannelType()) |
|
596 { |
|
597 // QueueTransaction requests are only supported by channels in Master mode. |
|
598 case DIicBusChannel::ESlave: |
|
599 { |
|
600 r = KErrNotSupported; |
|
601 break; |
|
602 } |
|
603 // If the request is supported by the Master channel, send it to the channel for processing in its thread |
|
604 case DIicBusChannel::EMasterSlave: |
|
605 { |
|
606 r = RequestTypeSupported(aBusId, ((DIicBusChannelMasterSlave*)chanPtr)->iMasterChannel); |
|
607 if(r == KErrNone) |
|
608 { |
|
609 aTransaction->iBusId = aBusId; |
|
610 r = (((DIicBusChannelMasterSlave*) chanPtr)->QueueTransaction(aTransaction, aCallback)); |
|
611 } |
|
612 break; |
|
613 } |
|
614 case DIicBusChannel::EMaster: |
|
615 { |
|
616 r = RequestTypeSupported(aBusId, (DIicBusChannelMaster*)chanPtr); |
|
617 if(r == KErrNone) |
|
618 { |
|
619 aTransaction->iBusId = aBusId; |
|
620 r = (((DIicBusChannelMaster*) chanPtr)->QueueTransaction(aTransaction, aCallback)); |
|
621 } |
|
622 break; |
|
623 } |
|
624 default: |
|
625 { |
|
626 r = KErrGeneral; |
|
627 } |
|
628 } |
|
629 } |
|
630 } |
|
631 } |
|
632 FreeChanReadAccess(); |
|
633 return r; |
|
634 } |
|
635 |
|
636 |
|
637 TInt DIicBusController::GetChanPtr(const TInt aBusId, TInt &aIndex, DIicBusChannel*& aChan) |
|
638 { |
|
639 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::GetChanPtr, aBusId=0x%x\n",aBusId)); |
|
640 |
|
641 TInt32 chanId; |
|
642 chanId = GET_CHAN_NUM(aBusId); |
|
643 |
|
644 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::GetChanPtr, chanId=0x%x\n", chanId)); |
|
645 DIicBusChannelSearcher searchChannel(DIicBusChannel::EMasterSlave, DIicBusChannel::ESccb, DIicBusChannel::EFullDuplex); |
|
646 searchChannel.SetChannelNumber((TInt8)chanId); |
|
647 |
|
648 TInt r = KErrNotFound; |
|
649 aIndex = iChannelArray.FindInOrder(&searchChannel, EntryOrder); |
|
650 if(aIndex >= 0) |
|
651 { |
|
652 aChan = iChannelArray[aIndex]; |
|
653 r = KErrNone; |
|
654 } |
|
655 |
|
656 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::GetChanPtr, chanPtr=0x%x, index=%d\n", aChan, aIndex)); |
|
657 return r; |
|
658 } |
|
659 |
|
660 |
|
661 TInt DIicBusController::CancelTransaction(TInt aBusId, TIicBusTransaction* aTransaction) |
|
662 { |
|
663 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::CancelTransaction, aBusId=0x%x,aTransaction=0x%x\n", aBusId, aTransaction)); |
|
664 if(!aTransaction) |
|
665 { |
|
666 return KErrArgument; |
|
667 } |
|
668 |
|
669 // Get the channel |
|
670 TInt dumInt = 0; |
|
671 DIicBusChannel* chanPtr = NULL; |
|
672 |
|
673 // Can only read the channel array if it is not currently being modified |
|
674 TInt r = GetChanReadAccess(); |
|
675 if(r == KErrNone) |
|
676 { |
|
677 r = GetChanPtr(aBusId, dumInt, chanPtr); |
|
678 if(r == KErrNone) |
|
679 { |
|
680 if(!chanPtr) |
|
681 { |
|
682 r = KErrArgument; |
|
683 } |
|
684 else |
|
685 { |
|
686 // QueueTransaction requests are only supported by channels in Master mode. |
|
687 switch(chanPtr->ChannelType()) |
|
688 { |
|
689 case DIicBusChannel::ESlave: |
|
690 { |
|
691 r = KErrNotSupported; |
|
692 break; |
|
693 } |
|
694 case DIicBusChannel::EMasterSlave: |
|
695 { |
|
696 r = RequestTypeSupported(aBusId, ((DIicBusChannelMasterSlave*)chanPtr)->iMasterChannel); |
|
697 if(r == KErrNone) |
|
698 { |
|
699 r = (((DIicBusChannelMasterSlave*) chanPtr)->CancelTransaction(aTransaction)); |
|
700 } |
|
701 break; |
|
702 } |
|
703 case DIicBusChannel::EMaster: |
|
704 { |
|
705 r = RequestTypeSupported(aBusId, (DIicBusChannelMaster*)chanPtr); |
|
706 if(r == KErrNone) |
|
707 { |
|
708 r = (((DIicBusChannelMaster*) chanPtr)->CancelTransaction(aTransaction)); |
|
709 } |
|
710 break; |
|
711 } |
|
712 default: |
|
713 { |
|
714 r = KErrGeneral; |
|
715 } |
|
716 } |
|
717 } |
|
718 } |
|
719 } |
|
720 FreeChanReadAccess(); |
|
721 return r; |
|
722 } |
|
723 |
|
724 // Slave-side API |
|
725 TInt DIicBusController::CaptureChannel(TInt aBusId, TDes8* aConfigHdr, TIicBusSlaveCallback* aCallback, TInt& aChannelId, TBool aAsynch) |
|
726 { |
|
727 // Check that that aCallback!=NULL and aConfigHdr!=NULL - if not, return KErrArgument |
|
728 if(!aCallback || !aConfigHdr) |
|
729 { |
|
730 return KErrArgument; |
|
731 } |
|
732 |
|
733 // Get the channel |
|
734 TInt chanIndex = 0; |
|
735 DIicBusChannel* chanPtr = NULL; |
|
736 |
|
737 // Can only read the channel array if it is not currently being modified |
|
738 TInt r = GetChanReadAccess(); |
|
739 if(r == KErrNone) |
|
740 { |
|
741 r = GetChanPtr(aBusId, chanIndex, chanPtr); |
|
742 if(r == KErrNone) |
|
743 { |
|
744 if(!chanPtr) |
|
745 { |
|
746 r = KErrArgument; |
|
747 } |
|
748 else |
|
749 { |
|
750 DIicBusChannelSlave* slaveChanPtr = NULL; |
|
751 switch(chanPtr->ChannelType()) |
|
752 { |
|
753 // CaptureChannel requests are only supported by channels in Slave mode. |
|
754 case DIicBusChannel::EMaster: |
|
755 { |
|
756 r = KErrNotSupported; |
|
757 break; |
|
758 } |
|
759 case DIicBusChannel::EMasterSlave: |
|
760 { |
|
761 slaveChanPtr = ((DIicBusChannelMasterSlave*) chanPtr)->iSlaveChannel; |
|
762 __ASSERT_DEBUG(slaveChanPtr!=NULL, Kern::Fault(KIicPanic,__LINE__)); // MasterSlave channel should have a valid Slave channel |
|
763 // Send the request to the channel |
|
764 slaveChanPtr->iController = this; |
|
765 r = ((DIicBusChannelMasterSlave*) chanPtr)->CaptureChannel(aConfigHdr, aCallback, aChannelId, aAsynch); |
|
766 break; |
|
767 } |
|
768 case DIicBusChannel::ESlave: |
|
769 { |
|
770 slaveChanPtr = (DIicBusChannelSlave*) chanPtr; // chanPtr is non-NULL |
|
771 // Send the request to the channel |
|
772 slaveChanPtr->iController = this; |
|
773 r = (slaveChanPtr->CaptureChannel(aConfigHdr, aCallback, aChannelId, aAsynch)); |
|
774 break; |
|
775 } |
|
776 default: |
|
777 { |
|
778 r = KErrArgument; |
|
779 } |
|
780 } |
|
781 // For synchronous capture, if successful then install the channel |
|
782 if(r == KErrNone && slaveChanPtr) |
|
783 { |
|
784 if(!aAsynch) |
|
785 { |
|
786 InstallCapturedChannel(aChannelId, slaveChanPtr); |
|
787 } |
|
788 } |
|
789 } |
|
790 } |
|
791 } |
|
792 FreeChanReadAccess(); |
|
793 return r; |
|
794 } |
|
795 |
|
796 |
|
797 TInt DIicBusController::GetSlaveChanPtr(TInt aChannelId, DIicBusChannelSlave*& aSlaveChanPtr) |
|
798 { |
|
799 TInt r=KErrNone; |
|
800 // Check that the channelID is recognised |
|
801 TCapturedChannel capturedChan(aChannelId,NULL); |
|
802 TInt chanIndex=-1; |
|
803 // Ensure the array of captured channels will not be modified before it has been searched |
|
804 // Because searches are bounded by the size of the array and do not involve allocating |
|
805 // or freeing memory, simply take the spinlock at the start of the operation and release at the end |
|
806 TInt captIntState=__SPIN_LOCK_IRQSAVE(*iCaptLock); |
|
807 r=FindCapturedChanById(capturedChan, chanIndex); |
|
808 if((chanIndex < 0)||(r == KErrNotFound)) |
|
809 r=KErrArgument; |
|
810 else |
|
811 aSlaveChanPtr = (DIicBusChannelSlave*)(iCapturedChannels[chanIndex].iChanPtr); |
|
812 __SPIN_UNLOCK_IRQRESTORE(*iCaptLock,captIntState); |
|
813 |
|
814 __ASSERT_DEBUG(aSlaveChanPtr!=NULL, Kern::Fault(KIicPanic,__LINE__)); |
|
815 return r; |
|
816 } |
|
817 |
|
818 |
|
819 TInt DIicBusController::ReleaseChannel(TInt aChannelId) |
|
820 { |
|
821 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::ReleaseChannel, channelID = 0x%x \n",aChannelId)); |
|
822 TInt r = KErrNone; |
|
823 DIicBusChannel* chanPtr = NULL; |
|
824 |
|
825 // Get the pointer to the Slave Channel |
|
826 DIicBusChannelSlave* slaveChanPtr = NULL; |
|
827 if((r = GetSlaveChanPtr(aChannelId, slaveChanPtr)) != KErrNone) |
|
828 return r; |
|
829 |
|
830 DIicBusChannelSearcher searchChannel(DIicBusChannel::EMasterSlave, DIicBusChannel::ESccb, DIicBusChannel::EFullDuplex); |
|
831 searchChannel.SetChannelNumber(slaveChanPtr->ChannelNumber()); |
|
832 |
|
833 TInt dumIndex = iChannelArray.FindInOrder(&searchChannel, EntryOrder); |
|
834 if(dumIndex < 0) |
|
835 { |
|
836 return KErrNotFound; |
|
837 } |
|
838 chanPtr = iChannelArray[dumIndex]; |
|
839 |
|
840 __ASSERT_DEBUG(chanPtr!=NULL, Kern::Fault(KIicPanic,__LINE__)); |
|
841 |
|
842 //if it is the masterslave channel, then call the masterslave's RelaseChannel |
|
843 // which will call the slave channel's ReleaseChannel internally |
|
844 if(chanPtr->ChannelType() == DIicBusChannel::EMasterSlave) |
|
845 r = ((DIicBusChannelMasterSlave*)chanPtr)->ReleaseChannel(); |
|
846 else // Call the slave only ReleaseChannel |
|
847 r = slaveChanPtr->ReleaseChannel(); |
|
848 |
|
849 // In either case de-install the captured slave channel |
|
850 if(r == KErrNone) |
|
851 { |
|
852 r = DeInstallCapturedChannel(aChannelId, slaveChanPtr); |
|
853 } |
|
854 |
|
855 // No need to unset iController - there is only one IIC Controller |
|
856 return r; |
|
857 } |
|
858 |
|
859 |
|
860 TInt DIicBusController::RegisterRxBuffer(TInt aChannelId, TPtr8 aRxBuffer, TInt8 aBufGranularity, TInt8 aNumWords, TInt8 aOffset) |
|
861 { |
|
862 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::RegisterRxBuffer, channelID=0x%x,aRxBuffer=0x%x,aBufGranularity=0x%x,aNumWords=0x%x,aOffset=0x%x \n",aChannelId,(TInt)&aRxBuffer,aBufGranularity,aNumWords,aOffset)); |
|
863 |
|
864 // Acquire the pointer to the Slave Channel |
|
865 DIicBusChannelSlave* slaveChanPtr = NULL; |
|
866 TInt r = GetSlaveChanPtr(aChannelId, slaveChanPtr); |
|
867 if(r != KErrNone) |
|
868 { |
|
869 return r; |
|
870 } |
|
871 |
|
872 // Instigate the channel functionality |
|
873 return(slaveChanPtr->RegisterRxBuffer(aRxBuffer,aBufGranularity,aNumWords,aOffset)); |
|
874 } |
|
875 |
|
876 TInt DIicBusController::RegisterTxBuffer(TInt aChannelId, TPtr8 aTxBuffer, TInt8 aBufGranularity, TInt8 aNumWords, TInt8 aOffset) |
|
877 { |
|
878 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::RegisterTxBuffer, channelID=0x%x,aTxBuffer=0x%x,aBufGranularity=0x%x,aNumWords=0x%x,aOffset=0x%x \n",aChannelId,(TInt)&aTxBuffer,aBufGranularity,aNumWords,aOffset)); |
|
879 |
|
880 // Acquire the pointer to the Slave Channel |
|
881 DIicBusChannelSlave* slaveChanPtr = NULL; |
|
882 TInt r = GetSlaveChanPtr(aChannelId, slaveChanPtr); |
|
883 if(r != KErrNone) |
|
884 { |
|
885 return r; |
|
886 } |
|
887 |
|
888 // Instigate the channel functionality |
|
889 return (slaveChanPtr->RegisterTxBuffer(aTxBuffer, aBufGranularity, aNumWords, aOffset)); |
|
890 } |
|
891 |
|
892 |
|
893 TInt DIicBusController::SetNotificationTrigger(TInt aChannelId, TInt aTrigger) |
|
894 { |
|
895 __KTRACE_OPT(KIIC, Kern::Printf("DIicBusController::SetNotificationTrigger - for aChannelId=0x%x, aTrigger=0x%x\n",aChannelId,aTrigger)); |
|
896 // Acquire the pointer to the Slave Channel |
|
897 DIicBusChannelSlave* slaveChanPtr = NULL; |
|
898 TInt r = GetSlaveChanPtr(aChannelId, slaveChanPtr); |
|
899 if( r != KErrNone) |
|
900 { |
|
901 return r; |
|
902 } |
|
903 |
|
904 // Instigate the channel functionality |
|
905 return(slaveChanPtr->SetNotificationTrigger(aTrigger)); |
|
906 } |
|
907 |
|
908 |
|
909 TInt DIicBusController::StaticExtension(TUint aId, TUint aFunction, TAny* aParam1, TAny* aParam2) |
|
910 { |
|
911 // The IIC controller and channel classes are generic, and can serve many differing client and |
|
912 // bus implementations. If a client and bus make use of specific functionality that is not |
|
913 // common to other bus types, it makes sense to provide only the minimum-required support in the |
|
914 // generic code. Here, the channel identifier is checked but all other parameters are passed |
|
915 // directly to the bus implementation channel for processing; if the channel does not provide |
|
916 // StaticExtension implementation, the generic DIicBusChannel::StaticExtension method is invoked. |
|
917 |
|
918 #ifdef IIC_INSTRUMENTATION_MACRO |
|
919 if((aFunction & KControlIoMask) == KMasterSlaveControlIo) |
|
920 { |
|
921 IIC_MSSTATEXT_START_PIL_TRACE |
|
922 } |
|
923 else if((aFunction & KControlIoMask) == KMasterControlIo) |
|
924 { |
|
925 IIC_MSTATEXT_START_PIL_TRACE |
|
926 } |
|
927 else if((aFunction & KControlIoMask) == KSlaveControlIo) |
|
928 { |
|
929 IIC_SSTATEXT_START_PIL_TRACE |
|
930 } |
|
931 // else - Unexpected value - just pass silently to the PSL ... |
|
932 #endif |
|
933 |
|
934 // Get the channel |
|
935 TInt dumInt = 0; |
|
936 DIicBusChannel* chanPtr = NULL; |
|
937 // Can only read the channel array if it is not currently being modified |
|
938 TInt r = GetChanReadAccess(); |
|
939 if(r == KErrNone) |
|
940 { |
|
941 r = GetChanPtr(aId, dumInt, chanPtr); |
|
942 if(r == KErrNone) |
|
943 { |
|
944 if(!chanPtr) |
|
945 { |
|
946 r = KErrArgument; |
|
947 } |
|
948 else |
|
949 { |
|
950 r = chanPtr->StaticExtension(aFunction, aParam1, aParam2); |
|
951 } |
|
952 } |
|
953 } |
|
954 |
|
955 #ifdef IIC_INSTRUMENTATION_MACRO |
|
956 if((aFunction & KControlIoMask) == KMasterSlaveControlIo) |
|
957 { |
|
958 IIC_MSSTATEXT_START_PIL_TRACE |
|
959 } |
|
960 else if((aFunction & KControlIoMask) == KMasterControlIo) |
|
961 { |
|
962 IIC_MSTATEXT_START_PIL_TRACE |
|
963 } |
|
964 else if((aFunction & KControlIoMask) == KSlaveControlIo) |
|
965 { |
|
966 IIC_SSTATEXT_START_PIL_TRACE |
|
967 } |
|
968 // else ... do nothing |
|
969 #endif |
|
970 FreeChanReadAccess(); |
|
971 return r; |
|
972 } |
|
973 |
|
974 |
|
975 #ifdef _DEBUG |
|
976 |
|
977 void DIicBusController::DumpCapturedChannels() |
|
978 { |
|
979 // Print iCapturedChannels ... |
|
980 TInt count=0; |
|
981 TInt i=0; |
|
982 TCapturedChannel emptyChan; |
|
983 for(;i<KMaxNumCapturedChannels;++i) |
|
984 { |
|
985 if(iCapturedChannels[i] == emptyChan) |
|
986 continue; |
|
987 ++count; |
|
988 } |
|
989 |
|
990 i = 0; |
|
991 __KTRACE_OPT(KIIC, Kern::Printf(" - Count gave %d\n",count)); |
|
992 for(;i<KMaxNumCapturedChannels;++i) |
|
993 { |
|
994 if(iCapturedChannels[i] == emptyChan) |
|
995 continue; |
|
996 DIicBusChannel* ptr=(DIicBusChannel*)(iCapturedChannels[i]).iChanPtr; |
|
997 __KTRACE_OPT(KIIC, Kern::Printf(" - ptr %d=0x%x\n",i,ptr)); |
|
998 ptr->StaticExtension(KCtrlIoDumpChan,0,0); |
|
999 }; |
|
1000 } |
|
1001 |
|
1002 void DIicBusController::DumpChannelArray() |
|
1003 { |
|
1004 TInt i = 0; |
|
1005 __KTRACE_OPT(KIIC, Kern::Printf("\nDIicBusController::DumpChannelArray\n")); |
|
1006 __KTRACE_OPT(KIIC, Kern::Printf(" - Count gave %d\n",iChannelArray.Count())); |
|
1007 for(i=0; i<iChannelArray.Count(); i++) |
|
1008 { |
|
1009 DIicBusChannel* ptr=iChannelArray[i]; |
|
1010 __KTRACE_OPT(KIIC, Kern::Printf(" - ptr %d=0x%x\n",i,ptr)); |
|
1011 ptr->StaticExtension(KCtrlIoDumpChan,0,0); |
|
1012 }; |
|
1013 } |
|
1014 |
|
1015 #endif |
|
1016 |
|
1017 #ifdef IIC_SIMULATED_PSL |
|
1018 TVersion DIicPdd::VersionRequired() |
|
1019 { |
|
1020 const TInt KIicMajorVersionNumber=1; |
|
1021 const TInt KIicMinorVersionNumber=0; |
|
1022 const TInt KIicBuildVersionNumber=KE32BuildVersionNumber; |
|
1023 return TVersion(KIicMajorVersionNumber,KIicMinorVersionNumber,KIicBuildVersionNumber); |
|
1024 } |
|
1025 |
|
1026 /** Factory class constructor */ |
|
1027 DIicPdd::DIicPdd() |
|
1028 { |
|
1029 iVersion = DIicPdd::VersionRequired(); |
|
1030 } |
|
1031 |
|
1032 DIicPdd::~DIicPdd() |
|
1033 { |
|
1034 delete TheController; |
|
1035 } |
|
1036 |
|
1037 TInt DIicPdd::Install() |
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1038 { |
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1039 return(SetName(&KPddName)); |
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1040 } |
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1041 |
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1042 /** Called by the kernel's device driver framework to create a Physical Channel. */ |
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1043 TInt DIicPdd::Create(DBase*& /*aChannel*/, TInt /*aUint*/, const TDesC8* /*anInfo*/, const TVersion& /*aVer*/) |
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1044 { |
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1045 return KErrNone; |
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1046 } |
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1047 |
|
1048 /** Called by the kernel's device driver framework to check if this PDD is suitable for use with a Logical Channel.*/ |
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1049 TInt DIicPdd::Validate(TInt /*aUnit*/, const TDesC8* /*anInfo*/, const TVersion& aVer) |
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1050 { |
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1051 if (!Kern::QueryVersionSupported(DIicPdd::VersionRequired(),aVer)) |
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1052 return(KErrNotSupported); |
|
1053 return KErrNone; |
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1054 } |
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1055 |
|
1056 /** Return the driver capabilities */ |
|
1057 void DIicPdd::GetCaps(TDes8& aDes) const |
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1058 { |
|
1059 // Create a capabilities object |
|
1060 TCaps caps; |
|
1061 caps.iVersion = iVersion; |
|
1062 // Zero the buffer |
|
1063 TInt maxLen = aDes.MaxLength(); |
|
1064 aDes.FillZ(maxLen); |
|
1065 // Copy cpabilities |
|
1066 TInt size=sizeof(caps); |
|
1067 if(size>maxLen) |
|
1068 size=maxLen; |
|
1069 aDes.Copy((TUint8*)&caps,size); |
|
1070 } |
|
1071 #endif |
|
1072 |
|
1073 #ifndef IIC_SIMULATED_PSL |
|
1074 // Client interface entry point |
|
1075 DECLARE_EXTENSION_WITH_PRIORITY(KExtensionMaximumPriority-1) // highest priority after Resource Manager |
|
1076 { |
|
1077 TheController = new DIicBusController; |
|
1078 if(!TheController) |
|
1079 return KErrNoMemory; |
|
1080 TInt r=TheController->Create(); |
|
1081 return r; |
|
1082 } |
|
1083 #else |
|
1084 static DIicPdd* TheIicPdd; |
|
1085 |
|
1086 DECLARE_STANDARD_PDD() |
|
1087 { |
|
1088 TheController = new DIicBusController; |
|
1089 if(!TheController) |
|
1090 return NULL; |
|
1091 TInt r = TheController->Create(); |
|
1092 if(r == KErrNone) |
|
1093 { |
|
1094 TheIicPdd = new DIicPdd; |
|
1095 if(TheIicPdd) |
|
1096 return TheIicPdd; |
|
1097 } |
|
1098 |
|
1099 delete TheController; |
|
1100 return NULL; |
|
1101 } |
|
1102 #endif |
|
1103 |
|
1104 |
|
1105 |