// Copyright (c) 2004-2009 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:

// omap3530/beagle_drivers/usb/usbv.cpp

//

#include <kernel.h>

#include <assp/omap3530_assp/omap3530_usbc.h>

// Platform-dependent USB client controller layer (USB PSL).

#include <assp/omap3530_assp/omap3530_i2c.h>

#include <assp/omap3530_assp/omap3530_i2creg.h>

#include <assp/omap3530_shared/tps65950.h>

// I2C Bit definitions

// PHY_CLK_CTRL

const TUint KCLK32K_EN = KBit1;

const TUint KREQ_PHY_DPLL_CLK = KBit0;

// PHY_CLK_STS

const TUint KPHY_DPLL_CLK = KBit0;

// MCPC_CTRL2

const TUint KMPC_CLK_EN = KBit0;

// FUNC_CTRL

const TUint KXCVRSELECT_HS = 0x0;

const TUint KXCVRSELECT_FS = KBit0;

const TUint KXCVRSELECT_MASK = 0x3;

const TUint KTERMSELECT = KBit2;

const TUint KOPMODE_DISABLED = KBit4;

const TUint KOPMODE_MASK = KBit3 | KBit4;

// MCPC_IO_CTRL

const TUint KRXD_PU = KBit3;

// OTG_CTRL

const TUint KDPPULLDOWN = KBit1;

const TUint KDMPULLDOWN = KBit2;

// POWER_CTRL

const TUint KOTG_EN = KBit5;

// VUSB???_DEV_GRP

const TUint KDEV_GRP_P1 = KBit5;

// CFG_BOOT

const TUint KHFCLK_FREQ_26Mhz = KBit1;

NONSHARABLE_CLASS( TBeagleUsbPhy ) : public MOmap3530UsbPhy

	{

public:

	TBeagleUsbPhy();

	TInt Construct();

	virtual void StartPHY();

	virtual void SetPHYMode( DOmap3530Usbcc::TPHYMode aMode );

	virtual void EnablePHY();

	virtual void DisablePHY();

private:

	TInt iPHYEnabled;

	};

TBeagleUsbPhy::TBeagleUsbPhy()

	{

	}

TInt TBeagleUsbPhy::Construct()

	{

	return KErrNone;

	}

void TBeagleUsbPhy::StartPHY()

	{

	// PHY clock must be enabled before this point (can't enable it in this function as it is called from an ISR context)

	TPS65950::DisableProtect();

	// Enable the USB LDO's (low-dropout regulators)

	TPS65950::ClearSetSync(TPS65950::Register::VUSB1V5_DEV_GRP,0x00,KDEV_GRP_P1);

	TPS65950::ClearSetSync(TPS65950::Register::VUSB1V8_DEV_GRP,0x00,KDEV_GRP_P1);

	TPS65950::ClearSetSync(TPS65950::Register::VUSB3V1_DEV_GRP,0x00,KDEV_GRP_P1);

	TPS65950::ClearSetSync(TPS65950::Register::CFG_BOOT,0x00, KHFCLK_FREQ_26Mhz);	

	TPS65950::RestoreProtect();

	}

void TBeagleUsbPhy::SetPHYMode( DOmap3530Usbcc::TPHYMode aMode )

	{

	EnablePHY();

	switch(aMode)

		{

		// Configure trancever (see swcu05b.pdf table 15-21 D+/D- Termination settings) 

		case DOmap3530Usbcc::ENormal:

			TPS65950::WriteSync(TPS65950::Register::MCPC_CTRL2_CLR, KMPC_CLK_EN); // Not UART Mode

			TPS65950::WriteSync(TPS65950::Register::FUNC_CTRL_CLR,(KXCVRSELECT_MASK | KTERMSELECT | KOPMODE_DISABLED ));	 // XCVRSELECT high speed mode (HS), TERM SELECT=0, OPMODE=0 (normal operation)	

			TPS65950::WriteSync(TPS65950::Register::MCPC_IO_CTRL_CLR, KRXD_PU);

			TPS65950::WriteSync(TPS65950::Register::OTG_CTRL_CLR, KDPPULLDOWN | KDMPULLDOWN); // Disable DP pulldown 

			TPS65950::WriteSync(TPS65950::Register::POWER_CTRL_SET, KOTG_EN);

			break;

		case DOmap3530Usbcc::EPowerUp:

			// Power up or VBUS<VSESSEND			

			TPS65950::WriteSync(TPS65950::Register::MCPC_CTRL2_CLR, KMPC_CLK_EN); // Not UART Mode

			TPS65950::WriteSync(TPS65950::Register::FUNC_CTRL, KXCVRSELECT_FS);		 // XXcvr Select 01, Term select 0, opmode 0,

			TPS65950::WriteSync(TPS65950::Register::OTG_CTRL_SET, KDPPULLDOWN | KDMPULLDOWN); // Disable DP pulldown 

			TPS65950::WriteSync(TPS65950::Register::POWER_CTRL_CLR, KOTG_EN); // Power down OTG

			break;

		case DOmap3530Usbcc::EPeripheralChirp:

			// OTG device Peripheral chirp			

			TPS65950::WriteSync(TPS65950::Register::MCPC_CTRL2_CLR, KMPC_CLK_EN); // Not UART Mode

			TPS65950::WriteSync(TPS65950::Register::FUNC_CTRL,(KXCVRSELECT_HS | KTERMSELECT | KOPMODE_MASK )); //Term select 1, opmode 10,  Xcvr Select 00,

			TPS65950::WriteSync(TPS65950::Register::MCPC_IO_CTRL_CLR, KRXD_PU);

			TPS65950::WriteSync(TPS65950::Register::OTG_CTRL_CLR, KDPPULLDOWN | KDMPULLDOWN); // Disable DP pulldown 

			TPS65950::WriteSync(TPS65950::Register::POWER_CTRL_SET, KOTG_EN);

			break;

		case DOmap3530Usbcc::EUART:

			// UART Mode

			TPS65950::WriteSync(TPS65950::Register::MCPC_CTRL2_SET, KMPC_CLK_EN); // Not UART Mode

			TPS65950::WriteSync(TPS65950::Register::MCPC_IO_CTRL_SET, KRXD_PU);

			break;

		default:

			// Don't change mode

			break;

		}

	DisablePHY();

	}

// The PHY 60Mhz clock must be enabled before Register accesses are attempted.

void TBeagleUsbPhy::EnablePHY()

	{

	__KTRACE_OPT(KUSB, Kern::Printf("TBeagleUsbPhy::EnablePHY"));	

	if(iPHYEnabled==0)

		{		

		TPS65950::WriteSync(TPS65950::Register::PHY_CLK_CTRL, KREQ_PHY_DPLL_CLK | KCLK32K_EN);

		TUint8 val=0;

		TInt retries =0;

		do

			{

			TPS65950::ReadSync(TPS65950::Register::PHY_CLK_CTRL_STS, val);

			NKern::Sleep( NKern::TimerTicks( 1 ) );

			//Kern::NanoWait(50000); // wait 1/2 millis to prevent soak

			retries++;

			}

		while(! (val & KPHY_DPLL_CLK) && (retries < 1000) );

		__ASSERT_ALWAYS(retries < 1000,Kern::Fault("TBeagleUsbPhy::EnablePHY Cant enable in 5s ",__LINE__));		

		__KTRACE_OPT(KUSB, Kern::Printf("TBeagleUsbPhy: PHY Enabled"));

		}

	iPHYEnabled++;

	}

void TBeagleUsbPhy::DisablePHY()

	{

	__KTRACE_OPT(KUSB, Kern::Printf("TBeagleUsbPhy::DisablePHY"));

	if(iPHYEnabled==1)

		{

		TPS65950::WriteSync(TPS65950::Register::PHY_CLK_CTRL, 0x0);			

		}

	if(iPHYEnabled>0)

		{

		iPHYEnabled--;

		}

	}

EXPORT_C MOmap3530UsbPhy* MOmap3530UsbPhy::New()

	{

	__KTRACE_OPT(KUSB, Kern::Printf(" > Initializing USB PHY"));

	TBeagleUsbPhy* const phy = new TBeagleUsbPhy;

	if (!phy)

		{

		__KTRACE_OPT(KPANIC, Kern::Printf("  Error: Memory allocation for TBeagleUsbPhy failed"));

		return NULL;

		}

	TInt r;

	if ((r = phy->Construct()) != KErrNone)

		{

		__KTRACE_OPT(KPANIC, Kern::Printf("  Error: Construction of TBeagleUsbPhy failed (%d)", r));

		delete phy;

		return NULL;

		}

	return phy;

	}

DECLARE_STANDARD_EXTENSION()

	{

	return KErrNone;

	}