/*

* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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:  Switches personality

 *

*/

#include <e32base.h>

#include <usb.h>

#include <usbpersonalityids.h>

#include "cusbpersonalityswitch.h"

#include "panic.h"

#include "debug.h"

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

// 

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

//

CUsbPersonalitySwitch::CUsbPersonalitySwitch(

        MUsbPersonalitySwitchObserver* aObserver) :

    CActive(CActive::EPriorityStandard), iObserver(aObserver), iState(EIdle)

    {

    CActiveScheduler::Add(this);

    }

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

// 

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

//

CUsbPersonalitySwitch::~CUsbPersonalitySwitch()

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::~CUsbPersonalitySwitch" ) );

    Cancel();

    iUsbInterface.Close();

    iSendData.Close();

    iRcvData.Close();

    }

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

// 

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

//

void CUsbPersonalitySwitch::ConstructL()

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::ConstructL" ) );

    }

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

// 

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

//

CUsbPersonalitySwitch* CUsbPersonalitySwitch::NewL(

        MUsbPersonalitySwitchObserver* aObserver)

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::NewL" ) );

    CUsbPersonalitySwitch* self = new (ELeave) CUsbPersonalitySwitch(

            aObserver);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self); // pop self

    return self;

    }

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

// 

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

//

TInt CUsbPersonalitySwitch::SwitchPersonalityL(TUint32 aDeviceId,

        TInt aPersonalityToBeSet)

    {

        FTRACE(FPrint(_L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::SwitchPersonality aDeviceId %d, aPersonalityToBeSet %d" ), aDeviceId, aPersonalityToBeSet))

    if (IsActive() || EIdle != iState)

        {

        Cancel();

        iObserver->UsbPersonalitySwitchStateChangedL(

                MUsbPersonalitySwitchObserver::ERequestCancelled, KErrNone);

        }

    // create usb interface for the device id

    TUint32 token(0); // = RFdc.InterfaceToken();

    TInt err = iUsbInterface.Open(token);

        FTRACE(FPrint(_L("[USBOTGWATCHER]\tCUsbPersonalitySwitch::SwitchPersonality UsbInterface Open err = %d" ), err));

    if (KErrNone != err)

        {

        return err;

        }

    iPersonalityToBeSet = aPersonalityToBeSet;

    // get list of supported personalities

    iTransfer.iRequestType = KUsbRequestType_DirToHost

            | KUsbRequestType_TypeVendor | KUsbRequestType_DestDevice;

    iTransfer.iRequest = KGetAllPersonalitiesReq;

    iTransfer.iValue = 0;

    iTransfer.iIndex = 0;

    iTransfer.iFlags

            = RUsbInterface::TUsbTransferRequestDetails::EShortTransferOk;

    Reset();

    iState = EGetAllPersonalities;

        FLOG( _L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::SwitchPersonalityL Sending GetAllPersonalities request." ) );

    iUsbInterface.Ep0Transfer(iTransfer, iSendData, iRcvData, iStatus);

    SetActive();

    iObserver->UsbPersonalitySwitchStateChangedL(

            MUsbPersonalitySwitchObserver::ERequestingAllPersonalities,

            KErrNone);

    return KErrNone;

    }

void CUsbPersonalitySwitch::CancelSwitchPersonalityL()

    {

        FLOG(_L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::CancelSwitchPersonalityL"));

    if (IsActive())

        {

        Cancel();

        iObserver->UsbPersonalitySwitchStateChangedL(

                MUsbPersonalitySwitchObserver::ERequestCancelled, KErrNone);

        }

    }

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

// 

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

//

void CUsbPersonalitySwitch::RunL()

    {

    if (KErrNone != iStatus.Int())

        {

            FTRACE(FPrint(_L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunL iStatus %d" ), iStatus.Int()));

        User::Leave(iStatus.Int());

        }

    switch (iState)

        {

        case EGetAllPersonalities:

            {

                FLOG(_L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunL GetAllPersonalities completed."));

            TInt numOfPersonalities = iRcvData[KNumOfPersShift];

                FTRACE(FPrint(_L("[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunL Amount of personalities in peripheral = %d" ), numOfPersonalities));

            // if no personalities then return

            if (0 == numOfPersonalities)

                {

                    FLOG(_L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunL No personailies found in peripheral."));

                Reset();

                iObserver->UsbPersonalitySwitchStateChangedL(

                        MUsbPersonalitySwitchObserver::EGetAllPersonalitiesCompleted,

                        KErrNotFound);

                return;

                }

            // if needed pers already set, then return

            TInt currentPersonality = iRcvData[KCurrPersShift];

            if (iPersonalityToBeSet == currentPersonality)

                {

                    FLOG(_L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunL Needed personality already set in peripheral."));

                Reset();

                iObserver->UsbPersonalitySwitchStateChangedL(

                        MUsbPersonalitySwitchObserver::EGetAllPersonalitiesCompleted,

                        KErrInUse);

                return;

                }

            // check if device supports needed personality

            TInt count(0);

            while (count < numOfPersonalities && iPersonalityToBeSet

                    != iRcvData[KFirstPersonalityIdShift

                            + KLenghtOfPersonalityData * count])

                {

                ++count;

                }

            if (count == numOfPersonalities) // not found == not supported

                {

                    FLOG(_L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunL Peripheral does not support needed personality."));

                Reset();

                iObserver->UsbPersonalitySwitchStateChangedL(

                        MUsbPersonalitySwitchObserver::EGetAllPersonalitiesCompleted,

                        KErrNotFound);

                return;

                }

            iObserver->UsbPersonalitySwitchStateChangedL(

                    MUsbPersonalitySwitchObserver::EGetAllPersonalitiesCompleted,

                    KErrNone);

            // set personality

            iTransfer.iRequestType = KUsbRequestType_DirToDev

                    | KUsbRequestType_TypeVendor | KUsbRequestType_DestDevice;

            iTransfer.iRequest = KSetPersonalityReq;

            iTransfer.iValue = iPersonalityToBeSet;

            iTransfer.iIndex = 0;

            iTransfer.iFlags

                    = RUsbInterface::TUsbTransferRequestDetails::EShortTransferOk;

            iSendData.Close();

            iRcvData.Close();

            iState = ESetPersonality;

                FLOG( _L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunL Sending SetPersonality request." ) );

            iUsbInterface.Ep0Transfer(iTransfer, iSendData, iRcvData, iStatus);

            SetActive();

            iObserver->UsbPersonalitySwitchStateChangedL(

                    MUsbPersonalitySwitchObserver::ERequestingSetPersonality,

                    KErrNone);

            break;

            }

        case ESetPersonality:

            {

                FLOG(_L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunL SetPersonality completed."));

            Reset();

            iObserver->UsbPersonalitySwitchStateChangedL(

                    MUsbPersonalitySwitchObserver::ESetPersonalityCompleted,

                    KErrNone);

            break;

            }

            /*  case EGetAllPersResult:

             {

             FLOG( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunL GetAllPersResult completed.");

             break;

             }

             case EGetSetPersResult:

             {

             FLOG( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunL GetSetPersResult completed.");

             break;

             }  */

        case EIdle: // do not break 

        default:

            {

            Panic(EUnexpectedUsbSwitchPersonalityState);

            }

        }

    }

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

// 

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

//

TInt CUsbPersonalitySwitch::RunError(TInt aError)

    {

        FTRACE(FPrint(_L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::RunError aError %d" ), aError ));

    Reset();

    TRAP_IGNORE (iObserver->UsbPersonalitySwitchStateChangedL(

            MUsbPersonalitySwitchObserver::ERequestFailed, aError) );

    return KErrNone;

    }

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

// 

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

//

void CUsbPersonalitySwitch::DoCancel()

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::DoCancel" ) )

    iUsbInterface.CancelEP0Transfer();

    Reset();

    }

void CUsbPersonalitySwitch::Reset()

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbPersonalitySwitch::Reset" ) )

    iState = EIdle;

    iSendData.Close();

    iRcvData.Close();

    }