/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

// INCLUDE FILES

#include "cusbpninterface.h"

#include "cusbpnalt.h"

#include "cusbpnpacket.h"

#include "cusbpnisareceiver.h"

#include "cusbpnusbreceiver.h"

#include "musbpncontrolobserver.h"

#include "usbpndefinitions.h"       // For constants

#include "usbpntrace.h"

#include "osttracedefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "cusbpninterfaceTraces.h"

#endif

#include <d32usbc.h>                // For RDevUsbcClient

#include <iscapi.h>                 // For RIscApi

#include <iscnokiadefinitions.h>    // For Channel ID

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES

// CONSTANTS

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// ============================= LOCAL FUNCTIONS ===============================

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// CUsbPnInterface::CUsbPnInterface

// C++ default constructor can NOT contain any code, that

// might leave.

// -----------------------------------------------------------------------------

//

CUsbPnInterface::CUsbPnInterface()

    {

    OstTrace0( TRACE_NORMAL, CUSBPNINTERFACE_CUSBPNINTERFACE_ENTRY, "CUsbPnInterface::CUsbPnInterface" );

    OstTrace0( TRACE_NORMAL, CUSBPNINTERFACE_CUSBPNINTERFACE_EXIT, "CUsbPnInterface::CUsbPnInterface - return" );

    C_TRACE( ( _T( "CUsbPnInterface::CUsbPnInterface()" ) ) );

    C_TRACE( ( _T( "CUsbPnInterface::CUsbPnInterface() - return" ) ) );

    }

// -----------------------------------------------------------------------------

// CUsbPnInterface::ConstructL

// Symbian 2nd phase constructor can leave.

// -----------------------------------------------------------------------------

//

void CUsbPnInterface::ConstructL()

    {

    OstTrace0( TRACE_NORMAL, CUSBPNINTERFACE_CONSTRUCTL_ENTRY, "CUsbPnInterface::ConstructL" );

    C_TRACE( ( _T( "CUsbPnInterface::ConstructL()" ) ) );

    iAlt = CUsbPnAlt::NewL( *this, iPnDataLdd, iIscApi );

    iIsaReceiver = CUsbPnIsaReceiver::NewL( iIscApi, iPnDataLdd );

    iUsbReceiver = CUsbPnUsbReceiver::NewL( iPnDataLdd, iIscApi );

    // Open ISC Channel

    TRequestStatus openStatus;

    iIscApi.Open( EIscNokiaUsbPhonetLink, openStatus );

    User::WaitForRequest( openStatus );

    User::LeaveIfError( openStatus.Int() );

    // Start ISA receiver without forward

    iIsaReceiver->Receive( EFalse );

    InitialiseInterfaceL();

    OstTrace0( TRACE_NORMAL, CUSBPNINTERFACE_CONSTRUCTL_EXIT, "CUsbPnInterface::ConstructL - return void" );

    C_TRACE( ( _T( "CUsbPnInterface::ConstructL() - return void" ) ) );

    }

// -----------------------------------------------------------------------------

// CUsbPnInterface::NewL

// Two-phased constructor.

// -----------------------------------------------------------------------------

//

CUsbPnInterface* CUsbPnInterface::NewL()

    {

    OstTrace0( TRACE_NORMAL, CUSBPNINTERFACE_NEWL_ENTRY, "CUsbPnInterface::NewL" );

    C_TRACE( ( _T( "CUsbPnInterface::NewL()" ) ) );

    CUsbPnInterface* self = new( ELeave ) CUsbPnInterface();

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    OstTrace1( TRACE_NORMAL, CUSBPNINTERFACE_NEWL_EXIT, "CUsbPnInterface::NewL - return;self=%x", self );

    C_TRACE( ( _T( "CUsbPnInterface::NewL() - return 0x%x" ), self ) );

    return self;

    }

// -----------------------------------------------------------------------------

// CUsbPnInterface::~CUsbPnInterface

// Two-phased constructor.

// -----------------------------------------------------------------------------

//

CUsbPnInterface::~CUsbPnInterface()

    {

    OstTrace0( TRACE_NORMAL, CUSBPNINTERFACE_CUSBPNINTERFACE_DESTRUCTOR_ENTRY, "CUsbPnInterface::~CUsbPnInterface" );

    C_TRACE( ( _T( "CUsbPnInterface::~CUsbPnInterface()" ) ) );

    if( iUsbReceiver )

        {

        delete iUsbReceiver;

        }

    if( iIsaReceiver )

        {

        delete iIsaReceiver;

        }

    iIscApi.Close();

    if( iInitialised )

        {

        ReleaseInterface();

        }

    if( iAlt )

        {

        delete iAlt;

        }

    OstTrace0( TRACE_NORMAL, CUSBPNINTERFACE_CUSBPNINTERFACE_DESTRUCTOR_EXIT, "CUsbPnInterface::~CUsbPnInterface - return" );

    C_TRACE( ( _T( "CUsbPnInterface::~CUsbPnInterface() - return" ) ) );

    }

// -----------------------------------------------------------------------------

// CUsbPnInterface::HandleDeviceStateChange

// ?implementation_description

// (other items were commented in a header).

// -----------------------------------------------------------------------------

//

void CUsbPnInterface::HandleDeviceStateChange( TUint aDeviceState )

    {

    OstTrace1( TRACE_API, CUSBPNINTERFACE_HANDLEDEVICESTATECHANGE_ENTRY, "CUsbPnInterface::HandleDeviceStateChange;aDeviceState=%u", aDeviceState );

    A_TRACE( ( _T( "CUsbPnInterface::HandleDeviceStateChange( aDeviceState:%d )"), aDeviceState ));

    if(aDeviceState & KUsbAlternateSetting)

        {

        OstTrace0( TRACE_API, CUSBPNINTERFACE_HANDLEDEVICESTATECHANGE, "CUsbPnInterface::HandleDeviceStateChange - Change alternate setting" );

        A_TRACE( ( _T( "CUsbPnInterface::HandleDeviceStateChange - Change alternate setting")));

        TUint altSetNbr( aDeviceState & ~KUsbAlternateSetting );

        SetAltSetting( altSetNbr );

        }

    else

        {

        OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_HANDLEDEVICESTATECHANGE_DUP1, "CUsbPnInterface::HandleDeviceStateChange - Normal state change" );

        E_TRACE( ( _T( "CUsbPnInterface::HandleDeviceStateChange - Normal state change")));

        switch( aDeviceState )

            {

            case EUsbcDeviceStateUndefined:

                {

                OstTrace0( TRACE_API, CUSBPNINTERFACE_HANDLEDEVICESTATECHANGE_DUP4, "CUsbPnInterface::HandleDeviceStateChange - EUsbcDeviceStateUndefined" );

                A_TRACE( ( _T( "CUsbPnInterface::HandleDeviceStateChange - EUsbcDeviceStateUndefined")));

                // Cancel async USB operations

                iUsbReceiver->SetEnumerated( EFalse );

                iUsbReceiver->Cancel();

                break;

                }

            case EUsbcDeviceStateDefault:

                {

                OstTrace0( TRACE_API, CUSBPNINTERFACE_HANDLEDEVICESTATECHANGE_DUP5, "CUsbPnInterface::HandleDeviceStateChange - EUsbcDeviceStateDefault" );

                A_TRACE( ( _T( "CUsbPnInterface::HandleDeviceStateChange - EUsbcDeviceStateDefault")));

                // Cancel async USB operations

                iUsbReceiver->SetEnumerated( EFalse );

                iUsbReceiver->Cancel();

                break;

                }

            default:

                {

                OstTrace0( TRACE_API, CUSBPNINTERFACE_HANDLEDEVICESTATECHANGE_DUP6, "CUsbPnInterface::HandleDeviceStateChange - State of no interest" );

                A_TRACE( ( _T( "CUsbPnInterface::HandleDeviceStateChange - State of no interest")));

                break;

                }

            }

        }

    OstTrace0( TRACE_API, CUSBPNINTERFACE_HANDLEDEVICESTATECHANGE_EXIT, "CUsbPnInterface::HandleDeviceStateChange - return void" );

    A_TRACE( ( _T( "CUsbPnInterface::HandleDeviceStateChange() - return void")));

    }

// -----------------------------------------------------------------------------

// CUsbPnInterface::SetAltSetting

// ?implementation_description

// (other items were commented in a header).

// -----------------------------------------------------------------------------

//

void CUsbPnInterface::SetAltSetting( TUint aAltSetNumber )

    {

    OstTrace1( TRACE_API, CUSBPNINTERFACE_SETALTSETTING_ENTRY, "CUsbPnInterface::SetAltSetting;aAltSetNumber=%u", aAltSetNumber );

    A_TRACE( ( _T( "CUsbPnInterface::SetAltSetting( aAltSetNumber:%d )" ), aAltSetNumber ) );

    if( aAltSetNumber )

        {

        // Receive from ISA with forwarding

        iIsaReceiver->SetForwardFlag( ETrue );

        iUsbReceiver->SetEnumerated( ETrue );

        iUsbReceiver->Receive( ETrue /*dummy*/ );

        }

    else

        {

        // Receive from ISA without forwarding

        iIsaReceiver->SetForwardFlag( EFalse );

        iUsbReceiver->SetEnumerated( EFalse );

        iUsbReceiver->Cancel();

        }

    OstTrace0( TRACE_API, CUSBPNINTERFACE_SETALTSETTING_EXIT, "CUsbPnInterface::SetAltSetting - return void" );

    A_TRACE( ( _T( "CUsbPnInterface::SetAltSetting() - return void")));

    }

// -----------------------------------------------------------------------------

// CUsbPnInterface::InitialiseInterfaceL

// ?implementation_description

// (other items were commented in a header).

// -----------------------------------------------------------------------------

//

void CUsbPnInterface::InitialiseInterfaceL()

    {

    OstTrace0( TRACE_API, CUSBPNINTERFACE_INITIALISEINTERFACEL_ENTRY, "CUsbPnInterface::InitialiseInterfaceL" );

    A_TRACE( ( _T( "CUsbPnInterface::InitialiseInterfaceL()" ) ) );

    TInt ret = iCommLdd.Open(0);

    if (ret != KErrNone)

        {

        // Maybe the device is not loaded yet.

        _LIT(KUsbLDDName, "eusbc");

        ret = User::LoadLogicalDevice( KUsbLDDName );

        OstTrace1( TRACE_DETAILED, DUP100_CUSBPNINTERFACE_INITIALISEINTERFACEL, "CUsbPnInterface::InitialiseInterfaceL - Tried loading the device with status %d", ret );

        E_TRACE( ( _T("CUsbPnInterface::InitialiseInterfaceL - Tried loading the device with status %d"), ret ) );

        if (ret == KErrNone || ret == KErrAlreadyExists)

            {

            ret = iCommLdd.Open(0);

            }

        if (ret != KErrNone)

            {

            OstTrace1( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Cannot open Comm LDD %d", ret );

            E_TRACE( ( _T( "USBPN - Cannot open Comm LDD %d" ), ret ) );

            User::Leave( KErrNotReady );

            }

        }

    ret = iPnDataLdd.Open(0);

    if (ret != KErrNone)

        {

        OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP1, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Cannot open PnData LDD" );

        E_TRACE( ( _T( "USBPN - Cannot open PnData LDD" ) ) );

        User::Leave( KErrNotReady );

        }

//////////////////////////////////////////////////////////////////////

// Comm interface

//////////////////////////////////////////////////////////////////////

    OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP2, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Setup Comm interface" );

    E_TRACE( ( _T( "USBPN - Setup Comm interface" ) ) );

    TUsbcInterfaceInfoBuf ifc;

    ifc().iString = const_cast<TDesC16*> (&KUsbPnCommIfc);

    ifc().iTotalEndpointsUsed = 0;

    ifc().iClass.iClassNum    = KCommInterfaceClass;

    ifc().iClass.iSubClassNum = KCommInterfaceSubClass;

    ifc().iClass.iProtocolNum = KCommInterfaceProtocol;

    OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP3, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Call SetInterface 0" );

    E_TRACE( ( _T( "USBPN - Call SetInterface 0" ) ) );

    ret = iCommLdd.SetInterface(0, ifc);

    if (ret != KErrNone)

        {

        TRACE_ASSERT_ALWAYS;

        User::Leave( ret );

        }

    //Get the interface number for later

    TBuf8<100> interfaceDescriptor;

    iCommLdd.GetInterfaceDescriptor(0, interfaceDescriptor);

    TUint8 interfaceNum;

    interfaceNum = interfaceDescriptor.Ptr()[2];

    HBufC8* descBuf = HBufC8::NewLC( 64 );

    TPtr8 desc( descBuf->Des() );

    //Comms Class Header Functional Descriptor

    desc.Append(KPnHeaderFunctionalDescriptorLength);

    desc.Append(KUsbDescType_CS_Interface);

    desc.Append(KHeaderDescriptorSubType);

    desc.Append(KCDCVersionNumber[0]);

    desc.Append(KCDCVersionNumber[1]);

    // PHONET Functional Descriptor

    desc.Append(KPnFunctionalDescriptorLength);

    desc.Append(KUsbDescType_CS_Interface);

    desc.Append(KFunctionalDescriptorSubType);

    // Union Functional Descriptor

    desc.Append(KPnUnionFunctionalDescriptorLength);

    desc.Append(KUsbDescType_CS_Interface);

    desc.Append(KUnionDescriptorSubType);

    desc.Append(interfaceNum);

    TInt dataInt;

    dataInt = interfaceNum + 1;

    desc.Append(static_cast<TUint8>(dataInt));

    // Vendor DMA FD

    desc.Append(KVendorDMAFDDescriptorLength);

    desc.Append(KUsbDescType_CS_Interface);

    desc.Append(KVendorDMADescriptorSubType);

    desc.Append(KDmaCapabilities);      // Is zero. Meaning interface is DMA incapable

    OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP4, "CUsbPnInterface::InitialiseInterfaceL - USBPN - SetCSInterfaceDescriptorBlock" );

    E_TRACE( ( _T( "USBPN - SetCSInterfaceDescriptorBlock" ) ) );

    ret = iCommLdd.SetCSInterfaceDescriptorBlock(0, desc);

    CleanupStack::PopAndDestroy( descBuf );

    if (ret != KErrNone)

        {

        TRACE_ASSERT_ALWAYS;

        User::Leave( ret );

        }

//////////////////////////////////////////////////////////////////////

// PHONET data interface alt 0

//////////////////////////////////////////////////////////////////////

    OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP5, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Register PHONET Data IF (alt 0)" );

    E_TRACE( ( _T( "USBPN - Register PHONET Data IF (alt 0)" ) ) );

    TUsbcInterfaceInfoBuf dataifc;

    dataifc().iString = const_cast<TDesC16*> (&KUsbPnDataAlt0Ifc);

    dataifc().iClass.iClassNum = KDataInterfaceClass;

    dataifc().iClass.iSubClassNum = KDataInterfaceSubClass;

    dataifc().iClass.iProtocolNum = KDataInterfaceProtocol;

    dataifc().iTotalEndpointsUsed = 0;

    OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP6, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Setup PHONET Data IF (alt 0)" );

    E_TRACE( ( _T( "USBPN - Setup PHONET Data IF (alt 0)" ) ) );

    ret = iPnDataLdd.SetInterface(0, dataifc);

    if (ret != KErrNone)

        {

        TRACE_ASSERT_ALWAYS;

        User::Leave( ret );

        }

//////////////////////////////////////////////////////////////////////

// data interface alt 1

//////////////////////////////////////////////////////////////////////

    OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP7, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Register PHONET Data IF (alt 1)" );

    E_TRACE( ( _T( "USBPN - Register PHONET Data IF (alt 1)" ) ) );

    //Register Data Interface 1

    TUsbcInterfaceInfoBuf dataifc1;

    // Fill in dataifc1

    dataifc1().iString = const_cast<TDesC16*> (&KUsbPnDataAlt1Ifc);;

    dataifc1().iClass.iClassNum = KDataInterfaceClass;

    dataifc1().iClass.iSubClassNum = KDataInterfaceSubClass;

    dataifc1().iClass.iProtocolNum = KDataInterfaceProtocol;

    dataifc1().iTotalEndpointsUsed = KUsbPnRequiredNumberOfEndpoints;

    TUsbDeviceCaps dCaps1;

    ret = iPnDataLdd.DeviceCaps(dCaps1);

    OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP8, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Checking result of DeviceCaps" );

    E_TRACE( ( _T( "USBPN - Checking result of DeviceCaps" ) ) );

    if ( ret )

        {

        TRACE_ASSERT_ALWAYS;

        User::Leave( ret );

        }

    const TUint totalEndpoints1 = static_cast<TUint>(dCaps1().iTotalEndpoints);

    OstTrace1( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP9, "CUsbPnInterface::InitialiseInterfaceL - USBPN - TotalEndpoints1=%d", totalEndpoints1 );

    E_TRACE( ( _T( "USBPN - TotalEndpoints1 %d" ), totalEndpoints1 ) );

    if (totalEndpoints1 < KUsbPnRequiredNumberOfEndpoints)

        {

        TRACE_ASSERT_ALWAYS;

        User::Leave( KErrGeneral );

        }

    TUsbcEndpointData data1[KUsbcMaxEndpoints];

    TPtr8 dataptr1 = TPtr8(reinterpret_cast<TUint8*>(data1), sizeof(data1), sizeof(data1));

    ret = iPnDataLdd.EndpointCaps(dataptr1);

    OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP10, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Checking result of EndpointCaps" );

    E_TRACE( ( _T( "USBPN - Checking result of EndpointCaps" ) ) );

    if (ret)

        {

        TRACE_ASSERT_ALWAYS;

        User::Leave( ret );

        }

    // Set data interface 1

    TBool outFound = EFalse;

    TBool inFound = EFalse;

    for (TUint ii = 0 ; ii < totalEndpoints1; ii++)

        {

        OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP11, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Set data interface 1" );

        E_TRACE( ( _T( "USBPN - Set data interface 1" ) ) );

        const TUsbcEndpointCaps* caps;

        caps = &data1[ii].iCaps;

        OstTraceExt2( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP12, "CUsbPnInterface::InitialiseInterfaceL - USBPN - iTypesAndDir=%d, epSize=%d", caps->iTypesAndDir, caps->MaxPacketSize() );

        E_TRACE( ( _T( "USBPN - iTypesAndDir %d, epSize:%d" ), caps->iTypesAndDir, caps->MaxPacketSize() ) );

#ifdef EXTENDED_TRACE_FLAG

        if(((caps->iTypesAndDir & (KUsbEpDirIn)) == (KUsbEpDirIn) ) )

            {

            OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP13, "CUsbPnInterface::InitialiseInterfaceL - USBPN - IN" );

            E_TRACE( ( _T( "USBPN - IN" )));

            }

        if(((caps->iTypesAndDir & (KUsbEpDirOut)) == (KUsbEpDirOut) ) )

            {

            OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP14, "CUsbPnInterface::InitialiseInterfaceL - USBPN - OUT" );

            E_TRACE( ( _T( "USBPN - OUT" )));

            }

        if(((caps->iTypesAndDir & (KUsbEpTypeBulk)) == (KUsbEpTypeBulk)))

            {

            OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP15, "CUsbPnInterface::InitialiseInterfaceL - USBPN - BULK" );

            E_TRACE( ( _T( "USBPN - BULK" )));

            }

#endif // EXTENDED_TRACE_FLAG

        if(data1[ii].iInUse)

            {

            OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP16, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Ep in use. Next..." );

            E_TRACE( ( _T( "USBPN - Ep in use. Next...")));

            continue;

            }

        //changes to bulk in ep

        if (((caps->iTypesAndDir & (KUsbEpTypeBulk | KUsbEpDirIn)) ==

            (KUsbEpTypeBulk | KUsbEpDirIn)) && !inFound)

            {

            OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP17, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Bulk IN found for EEndpoint1" );

            E_TRACE( ( _T( "USBPN - Bulk IN found for EEndpoint1" ) ) );

            // EEndpoint1 is bulk in endpoint

            dataifc1().iEndpointData[0].iType       = KUsbEpTypeBulk;

            dataifc1().iEndpointData[0].iDir        = KUsbEpDirIn;

            //dataifc1().iEndpointData[0].iInterval   = 0;

            dataifc1().iEndpointData[0].iSize       = caps->MaxPacketSize();

            inFound = ETrue;

            }

        else if (((caps->iTypesAndDir & (KUsbEpTypeBulk | KUsbEpDirOut)) ==

            (KUsbEpTypeBulk | KUsbEpDirOut)) && !outFound)

            {

            OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP18, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Bulk OUT found for EEndpoint2" );

            E_TRACE( ( _T( "USBPN - Bulk OUT found for EEndpoint2" ) ) );

            // EEndpoint2 is bulk out endpoint

            dataifc1().iEndpointData[1].iType       = KUsbEpTypeBulk;

            dataifc1().iEndpointData[1].iDir        = KUsbEpDirOut;

            //dataifc1().iEndpointData[1].iInterval   = 0;

            dataifc1().iEndpointData[1].iSize       = caps->MaxPacketSize();

            outFound = ETrue;

            }

        if (outFound && inFound)

            {

            break;

            }

        } // end for ( ... )

    OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP19, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Checking epFound" );

    E_TRACE( ( _T( "USBPN - Checking epFound" ) ) );

    if (!outFound || !inFound )

        {

        TRACE_ASSERT_ALWAYS;

        User::Leave( KErrGeneral );

        }

    OstTrace0( TRACE_DETAILED, CUSBPNINTERFACE_INITIALISEINTERFACEL_DUP20, "CUsbPnInterface::InitialiseInterfaceL - USBPN - Setting LCIF Data IF (alt 1)" );

    E_TRACE( ( _T( "USBPN - Setting LCIF Data IF (alt 1)" ) ) );

    ret = iPnDataLdd.SetInterface(1, dataifc1);

    if (ret != KErrNone)

        {

        TRACE_ASSERT_ALWAYS;

        User::Leave( ret );

        }

    iAlt->ListenStateChange();

    iInitialised = ETrue;

    OstTrace0( TRACE_NORMAL, CUSBPNINTERFACE_INITIALISEINTERFACEL_EXIT, "CUsbPnInterface::InitialiseInterfaceL - return void" );

    C_TRACE( ( _T( "CUsbPnInterface::InitialiseInterfaceL() - return void")));

    }

// -----------------------------------------------------------------------------

// CUsbInterface::ReleaseInterface

// Release and close all LDD in reverse order as in setup

// -----------------------------------------------------------------------------

//

EXPORT_C void CUsbPnInterface::ReleaseInterface()

    {