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1 /* |
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2 * Copyright (c) 1997-2009 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: |
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15 * Talks directly to the USB Logical Device Driver (LDD) and |
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16 * watches any state changes |
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17 * |
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18 */ |
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19 |
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20 /** |
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21 @file |
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22 */ |
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23 |
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24 #include <usb/usblogger.h> |
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25 #include "CUsbScheduler.h" |
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26 #include "CUsbDeviceStateWatcher.h" |
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27 #include "CUsbDevice.h" |
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28 |
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29 #ifdef __FLOG_ACTIVE |
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30 _LIT8(KLogComponent, "USBSVR"); |
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31 #endif |
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32 |
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33 /** |
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34 * The CUsbDeviceStateWatcher::NewL method |
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35 * |
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36 * Constructs a new CUsbDeviceStateWatcher object |
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37 * |
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38 * @internalComponent |
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39 * @param aOwner The device that owns the state watcher |
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40 * @param aLdd A reference to the USB Logical Device Driver |
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41 * |
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42 * @return A new CUsbDeviceStateWatcher object |
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43 */ |
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44 CUsbDeviceStateWatcher* CUsbDeviceStateWatcher::NewL(CUsbDevice& aOwner, RDevUsbcClient& aLdd) |
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45 { |
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46 LOG_STATIC_FUNC_ENTRY |
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47 |
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48 CUsbDeviceStateWatcher* r = new (ELeave) CUsbDeviceStateWatcher(aOwner, aLdd); |
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49 return r; |
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50 } |
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51 |
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52 |
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53 /** |
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54 * The CUsbDeviceStateWatcher::~CUsbDeviceStateWatcher method |
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55 * |
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56 * Destructor |
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57 * |
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58 * @internalComponent |
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59 */ |
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60 CUsbDeviceStateWatcher::~CUsbDeviceStateWatcher() |
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61 { |
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62 LOGTEXT2(_L8(">CUsbDeviceStateWatcher::~CUsbDeviceStateWatcher (0x%08x)"), (TUint32) this); |
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63 Cancel(); |
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64 } |
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65 |
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66 |
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67 /** |
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68 * The CUsbDeviceStateWatcher::CUsbDeviceStateWatcher method |
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69 * |
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70 * Constructor |
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71 * |
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72 * @param aOwner The device that owns the state watcher |
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73 * @param aLdd A reference to the USB Logical Device Driver |
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74 */ |
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75 CUsbDeviceStateWatcher::CUsbDeviceStateWatcher(CUsbDevice& aOwner, RDevUsbcClient& aLdd) |
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76 : CActive(CActive::EPriorityStandard), iOwner(aOwner), iLdd(aLdd) |
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77 { |
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78 CActiveScheduler::Add(this); |
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79 } |
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80 |
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81 /** |
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82 * Called when the USB device changes its state. |
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83 */ |
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84 void CUsbDeviceStateWatcher::RunL() |
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85 { |
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86 if (iStatus.Int() != KErrNone) |
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87 { |
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88 LOGTEXT2(_L8("CUsbDeviceStateWatcher::RunL() - Error = %d"), iStatus.Int()); |
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89 return; |
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90 } |
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91 |
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92 LOGTEXT2(_L8("CUsbDeviceStateWatcher::RunL() - State Changed to %d"), iState); |
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93 |
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94 if (!(iState & KUsbAlternateSetting)) |
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95 iOwner.SetDeviceState((TUsbcDeviceState) iState); |
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96 |
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97 LOGTEXT(_L8("CUsbDeviceStateWatcher::RunL() - About to call DeviceStatusNotify")); |
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98 iLdd.AlternateDeviceStatusNotify(iStatus, iState); |
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99 SetActive(); |
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100 LOGTEXT(_L8("CUsbDeviceStateWatcher::RunL() - Called DeviceStatusNotify")); |
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101 } |
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102 |
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103 |
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104 /** |
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105 * Automatically called when the state watcher is cancelled. |
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106 */ |
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107 void CUsbDeviceStateWatcher::DoCancel() |
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108 { |
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109 LOG_FUNC |
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110 iLdd.AlternateDeviceStatusNotifyCancel(); |
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111 } |
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112 |
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113 |
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114 /** |
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115 * Instructs the state watcher to start watching. |
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116 */ |
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117 void CUsbDeviceStateWatcher::Start() |
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118 { |
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119 LOG_FUNC |
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120 iLdd.AlternateDeviceStatusNotify(iStatus, iState); |
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121 SetActive(); |
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122 } |