drivers/staging/bcm/InterfaceInit.c

#include "headers.h"

static struct usb_device_id InterfaceUsbtable[] = {
    { USB_DEVICE(BCM_USB_VENDOR_ID_T3, BCM_USB_PRODUCT_ID_T3) },
    { USB_DEVICE(BCM_USB_VENDOR_ID_T3, BCM_USB_PRODUCT_ID_T3B) },
    { USB_DEVICE(BCM_USB_VENDOR_ID_T3, BCM_USB_PRODUCT_ID_T3L) },
    { USB_DEVICE(BCM_USB_VENDOR_ID_ZTE, BCM_USB_PRODUCT_ID_226) },
    { USB_DEVICE(BCM_USB_VENDOR_ID_FOXCONN, BCM_USB_PRODUCT_ID_1901) },

    { }
};
MODULE_DEVICE_TABLE(usb, InterfaceUsbtable);

static INT InterfaceAdapterInit(PS_INTERFACE_ADAPTER Adapter);

static VOID InterfaceAdapterFree(PS_INTERFACE_ADAPTER psIntfAdapter)
{
	INT i = 0;
	// Wake up the wait_queue...
	if(psIntfAdapter->psAdapter->LEDInfo.led_thread_running & BCM_LED_THREAD_RUNNING_ACTIVELY)
	{
		psIntfAdapter->psAdapter->DriverState = DRIVER_HALT;
		wake_up(&psIntfAdapter->psAdapter->LEDInfo.notify_led_event);
	}
	reset_card_proc(psIntfAdapter->psAdapter);

	//worst case time taken by the RDM/WRM will be 5 sec. will check after every 100 ms
	//to accertain the device is not being accessed. After this No RDM/WRM should be made.
	while(psIntfAdapter->psAdapter->DeviceAccess)
	{
		BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL,"Device is being Accessed \n");
		msleep(100);
	}
	/* Free interrupt URB */
	//psIntfAdapter->psAdapter->device_removed = TRUE;
	if(psIntfAdapter->psInterruptUrb)
	{
		usb_free_urb(psIntfAdapter->psInterruptUrb);
	}

	/* Free transmit URBs */
	for(i = 0; i < MAXIMUM_USB_TCB; i++)
	{
		if(psIntfAdapter->asUsbTcb[i].urb  != NULL)
		{
			usb_free_urb(psIntfAdapter->asUsbTcb[i].urb);
			psIntfAdapter->asUsbTcb[i].urb = NULL;
		}
	}
	/* Free receive URB and buffers */
	for(i = 0; i < MAXIMUM_USB_RCB; i++)
	{
		if (psIntfAdapter->asUsbRcb[i].urb != NULL)
		{
			kfree(psIntfAdapter->asUsbRcb[i].urb->transfer_buffer);
			usb_free_urb(psIntfAdapter->asUsbRcb[i].urb);
			psIntfAdapter->asUsbRcb[i].urb = NULL;
		}
	}
	AdapterFree(psIntfAdapter->psAdapter);
}

static VOID ConfigureEndPointTypesThroughEEPROM(PMINI_ADAPTER Adapter)
{
	ULONG ulReg = 0;

// Program EP2 MAX_PKT_SIZE
	ulReg = ntohl(EP2_MPS_REG);
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x128,4,TRUE);
	ulReg = ntohl(EP2_MPS);
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x12C,4,TRUE);

	ulReg = ntohl(EP2_CFG_REG);
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x132,4,TRUE);
	if(((PS_INTERFACE_ADAPTER)(Adapter->pvInterfaceAdapter))->bHighSpeedDevice == TRUE)
	{
		ulReg = ntohl(EP2_CFG_INT);
		BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x136,4,TRUE);
	}
	else
	{
// USE BULK EP as TX in FS mode.
		ulReg = ntohl(EP2_CFG_BULK);
		BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x136,4,TRUE);
	}


// Program EP4 MAX_PKT_SIZE.
	ulReg = ntohl(EP4_MPS_REG);
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x13C,4,TRUE);
	ulReg = ntohl(EP4_MPS);
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x140,4,TRUE);

//	Program TX EP as interrupt (Alternate Setting)
	if( rdmalt(Adapter,0x0F0110F8, (PUINT)&ulReg,4))
	{
		BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "reading of Tx EP is failing");
		return ;
	}
	ulReg |= 0x6;

	ulReg = ntohl(ulReg);
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x1CC,4,TRUE);

	ulReg = ntohl(EP4_CFG_REG);
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x1C8,4,TRUE);
// Program ISOCHRONOUS EP size to zero.
	ulReg = ntohl(ISO_MPS_REG);
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x1D2,4,TRUE);
	ulReg = ntohl(ISO_MPS);
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x1D6,4,TRUE);

// Update EEPROM Version.
// Read 4 bytes from 508 and modify 511 and 510.
//
	ReadBeceemEEPROM(Adapter,0x1FC,(PUINT)&ulReg);
	ulReg &= 0x0101FFFF;
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x1FC,4,TRUE);
//
//Update length field if required. Also make the string NULL terminated.
//
	ReadBeceemEEPROM(Adapter,0xA8,(PUINT)&ulReg);
	if((ulReg&0x00FF0000)>>16 > 0x30)
	{
		ulReg = (ulReg&0xFF00FFFF)|(0x30<<16);
		BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0xA8,4,TRUE);
	}
	ReadBeceemEEPROM(Adapter,0x148,(PUINT)&ulReg);
	if((ulReg&0x00FF0000)>>16 > 0x30)
	{
		ulReg = (ulReg&0xFF00FFFF)|(0x30<<16);
		BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x148,4,TRUE);
	}
	ulReg = 0;
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x122,4,TRUE);
	ulReg = 0;
	BeceemEEPROMBulkWrite(Adapter,(PUCHAR)&ulReg,0x1C2,4,TRUE);

}

static int
usbbcm_device_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct usb_device *udev = interface_to_usbdev (intf);
	int retval;
	PMINI_ADAPTER psAdapter;
	PS_INTERFACE_ADAPTER psIntfAdapter;
	struct net_device *ndev;

	/* Reserve one extra queue for the bit-bucket */
	ndev = alloc_etherdev_mq(sizeof(MINI_ADAPTER), NO_OF_QUEUES+1);
	if(ndev == NULL) {
		dev_err(&udev->dev, DRV_NAME ": no memory for device\n");
		return -ENOMEM;
	}

	SET_NETDEV_DEV(ndev, &intf->dev);

	psAdapter = netdev_priv(ndev);
	psAdapter->dev = ndev;

    /* Init default driver debug state */

	psAdapter->stDebugState.debug_level = DBG_LVL_CURR;
	psAdapter->stDebugState.type = DBG_TYPE_INITEXIT;

    /* Technically, one can start using BCM_DEBUG_PRINT after this point.
	 * However, realize that by default the Type/Subtype bitmaps are all zero now;
	 * so no prints will actually appear until the TestApp turns on debug paths via
	 * the ioctl(); so practically speaking, in early init, no logging happens.
	 *
	 * A solution (used below): we explicitly set the bitmaps to 1 for Type=DBG_TYPE_INITEXIT
	 * and ALL subtype's of the same. Now all bcm debug statements get logged, enabling debug
	 * during early init.
	 * Further, we turn this OFF once init_module() completes.
	 */

    psAdapter->stDebugState.subtype[DBG_TYPE_INITEXIT] = 0xff;
	BCM_SHOW_DEBUG_BITMAP(psAdapter);

	retval = InitAdapter(psAdapter);
	if(retval)
	{
		dev_err(&udev->dev, DRV_NAME ": InitAdapter Failed\n");
		AdapterFree(psAdapter);
		return retval;
	}

	/* Allocate interface adapter structure */
	psIntfAdapter = kzalloc(sizeof(S_INTERFACE_ADAPTER), GFP_KERNEL);
	if (psIntfAdapter == NULL)
	{
		dev_err(&udev->dev, DRV_NAME ": no memory for Interface adapter\n");
		AdapterFree (psAdapter);
		return -ENOMEM;
	}

	psAdapter->pvInterfaceAdapter = psIntfAdapter;
	psIntfAdapter->psAdapter = psAdapter;

	/* Store usb interface in Interface Adapter */
	psIntfAdapter->interface = intf;
	usb_set_intfdata(intf, psIntfAdapter);

	BCM_DEBUG_PRINT(psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "psIntfAdapter 0x%p",psIntfAdapter);
	retval = InterfaceAdapterInit(psIntfAdapter);
	if(retval)
	{
		/* If the Firmware/Cfg File is not present
 		 * then return success, let the application
 		 * download the files.
 		 */
		if(-ENOENT == retval){
			BCM_DEBUG_PRINT(psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "File Not Found, Use App to Download\n");
			return STATUS_SUCCESS;
		}
		BCM_DEBUG_PRINT(psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "InterfaceAdapterInit Failed \n");
		usb_set_intfdata(intf, NULL);
		udev = interface_to_usbdev (intf);
		usb_put_dev(udev);
		InterfaceAdapterFree(psIntfAdapter);
		return retval ;
	}
	if(psAdapter->chip_id > T3)
	{
		uint32_t uiNackZeroLengthInt=4;
		if(wrmalt(psAdapter, DISABLE_USB_ZERO_LEN_INT, &uiNackZeroLengthInt, sizeof(uiNackZeroLengthInt)))
		{
			return -EIO;;
		}
	}

	/* Check whether the USB-Device Supports remote Wake-Up */
	if(USB_CONFIG_ATT_WAKEUP & udev->actconfig->desc.bmAttributes)
	{
		/* If Suspend then only support dynamic suspend */
		if(psAdapter->bDoSuspend)
		{
#ifdef CONFIG_PM
			udev->autosuspend_delay = 0;
			intf->needs_remote_wakeup = 1;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
 			udev->autosuspend_disabled = 0;
#else
			usb_enable_autosuspend(udev);
#endif
 			device_init_wakeup(&intf->dev,1);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
 			usb_autopm_disable(intf);
#endif
			INIT_WORK(&psIntfAdapter->usbSuspendWork, putUsbSuspend);
			BCM_DEBUG_PRINT(psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Enabling USB Auto-Suspend\n");
#endif
		}
		else
		{
			intf->needs_remote_wakeup = 0;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
 			udev->autosuspend_disabled = 1;
#else
			usb_disable_autosuspend(udev);
#endif
		}
	}

    psAdapter->stDebugState.subtype[DBG_TYPE_INITEXIT] = 0x0;
    return retval;
}

static void usbbcm_disconnect (struct usb_interface *intf)
{
	PS_INTERFACE_ADAPTER psIntfAdapter = NULL;
	PMINI_ADAPTER psAdapter = NULL;
	struct usb_device       *udev = NULL;
    PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);

	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Usb disconnected");
	if(intf == NULL)
	{
		BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "intf pointer is NULL");
		return;
	}
	psIntfAdapter = usb_get_intfdata(intf);
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "psIntfAdapter 0x%p",psIntfAdapter);
	if(psIntfAdapter == NULL)
	{
		BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "InterfaceAdapter pointer is NULL");
		return;
	}
	psAdapter = psIntfAdapter->psAdapter;
	if(psAdapter->bDoSuspend)
		intf->needs_remote_wakeup = 0;

	psAdapter->device_removed = TRUE ;
	usb_set_intfdata(intf, NULL);
	InterfaceAdapterFree(psIntfAdapter);
	udev = interface_to_usbdev (intf);
	usb_put_dev(udev);
}

static int AllocUsbCb(PS_INTERFACE_ADAPTER psIntfAdapter)
{
	int i = 0;
	for(i = 0; i < MAXIMUM_USB_TCB; i++)
	{
		if((psIntfAdapter->asUsbTcb[i].urb =
				usb_alloc_urb(0, GFP_KERNEL)) == NULL)
		{
			BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_PRINTK, 0, 0, "Cant allocate Tx urb for index %d", i);
			return -ENOMEM;
		}
	}

	for(i = 0; i < MAXIMUM_USB_RCB; i++)
	{
		if ((psIntfAdapter->asUsbRcb[i].urb =
				usb_alloc_urb(0, GFP_KERNEL)) == NULL)
		{
			BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_PRINTK, 0, 0, "Cant allocate Rx urb for index %d", i);
			return -ENOMEM;
		}
		if((psIntfAdapter->asUsbRcb[i].urb->transfer_buffer =
			kmalloc(MAX_DATA_BUFFER_SIZE, GFP_KERNEL)) == NULL)
		{
			BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_PRINTK, 0, 0, "Cant allocate Rx buffer for index %d", i);
			return -ENOMEM;
		}
		psIntfAdapter->asUsbRcb[i].urb->transfer_buffer_length = MAX_DATA_BUFFER_SIZE;
	}
	return 0;
}



static int device_run(PS_INTERFACE_ADAPTER psIntfAdapter)
{
	INT value = 0;
	UINT status = STATUS_SUCCESS;

	status = InitCardAndDownloadFirmware(psIntfAdapter->psAdapter);
	if(status != STATUS_SUCCESS)
	{
		pr_err(DRV_NAME "InitCardAndDownloadFirmware failed.\n");
		return status;
	}
	if(TRUE == psIntfAdapter->psAdapter->fw_download_done)
	{
		if(StartInterruptUrb(psIntfAdapter))
		{
			BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Cannot send interrupt in URB");
		}
		//now register the cntrl interface.
		//after downloading the f/w waiting for 5 sec to get the mailbox interrupt.

		psIntfAdapter->psAdapter->waiting_to_fw_download_done = FALSE;
		value = wait_event_timeout(psIntfAdapter->psAdapter->ioctl_fw_dnld_wait_queue,
					psIntfAdapter->psAdapter->waiting_to_fw_download_done, 5*HZ);

		if(value == 0)
			pr_err(DRV_NAME ": Mailbox Interrupt has not reached to Driver..\n");

		if(register_control_device_interface(psIntfAdapter->psAdapter) < 0)
		{
			pr_err(DRV_NAME ": Register Control Device failed...\n");
			return -EIO;
		}
	}
	return 0;
}


static inline int bcm_usb_endpoint_num(const struct usb_endpoint_descriptor *epd)
{
	return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
}

static inline int bcm_usb_endpoint_type(const struct usb_endpoint_descriptor *epd)
{
	return epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
}

static inline int bcm_usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd)
{
	return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN);
}

static inline int bcm_usb_endpoint_dir_out(const struct usb_endpoint_descriptor *epd)
{
	return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT);
}

static inline int bcm_usb_endpoint_xfer_bulk(const struct usb_endpoint_descriptor *epd)
{
	return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
		USB_ENDPOINT_XFER_BULK);
}

static inline int bcm_usb_endpoint_xfer_control(const struct usb_endpoint_descriptor *epd)
{
	return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
		USB_ENDPOINT_XFER_CONTROL);
}

static inline int bcm_usb_endpoint_xfer_int(const struct usb_endpoint_descriptor *epd)
{
	return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
		USB_ENDPOINT_XFER_INT);
}

static inline int bcm_usb_endpoint_xfer_isoc(const struct usb_endpoint_descriptor *epd)
{
	return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
		USB_ENDPOINT_XFER_ISOC);
}

static inline int bcm_usb_endpoint_is_bulk_in(const struct usb_endpoint_descriptor *epd)
{
	return (bcm_usb_endpoint_xfer_bulk(epd) && bcm_usb_endpoint_dir_in(epd));
}

static inline int bcm_usb_endpoint_is_bulk_out(const struct usb_endpoint_descriptor *epd)
{
	return (bcm_usb_endpoint_xfer_bulk(epd) && bcm_usb_endpoint_dir_out(epd));
}

static inline int bcm_usb_endpoint_is_int_in(const struct usb_endpoint_descriptor *epd)
{
	return (bcm_usb_endpoint_xfer_int(epd) && bcm_usb_endpoint_dir_in(epd));
}

static inline int bcm_usb_endpoint_is_int_out(const struct usb_endpoint_descriptor *epd)
{
	return (bcm_usb_endpoint_xfer_int(epd) && bcm_usb_endpoint_dir_out(epd));
}

static inline int bcm_usb_endpoint_is_isoc_in(const struct usb_endpoint_descriptor *epd)
{
	return (bcm_usb_endpoint_xfer_isoc(epd) && bcm_usb_endpoint_dir_in(epd));
}

static inline int bcm_usb_endpoint_is_isoc_out(const struct usb_endpoint_descriptor *epd)
{
	return (bcm_usb_endpoint_xfer_isoc(epd) && bcm_usb_endpoint_dir_out(epd));
}

static INT InterfaceAdapterInit(PS_INTERFACE_ADAPTER psIntfAdapter)
{
	struct usb_host_interface *iface_desc;
	struct usb_endpoint_descriptor *endpoint;
	size_t buffer_size;
	ULONG value;
	INT retval = 0;
	INT usedIntOutForBulkTransfer = 0 ;
	BOOLEAN bBcm16 = FALSE;
	UINT uiData = 0;

	/* Store the usb dev into interface adapter */
	psIntfAdapter->udev = usb_get_dev(interface_to_usbdev(psIntfAdapter->interface));

	psIntfAdapter->bHighSpeedDevice = (psIntfAdapter->udev->speed == USB_SPEED_HIGH);
	psIntfAdapter->psAdapter->interface_rdm = BcmRDM;
	psIntfAdapter->psAdapter->interface_wrm = BcmWRM;

	if(rdmalt(psIntfAdapter->psAdapter, CHIP_ID_REG, (PUINT)&(psIntfAdapter->psAdapter->chip_id), sizeof(UINT)) < 0)
	{
		BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_PRINTK, 0, 0, "CHIP ID Read Failed\n");
		return STATUS_FAILURE;
	}

	if(0xbece3200==(psIntfAdapter->psAdapter->chip_id&~(0xF0)))
		psIntfAdapter->psAdapter->chip_id &= ~0xF0;

	dev_info(&psIntfAdapter->udev->dev, "RDM Chip ID 0x%lx\n",
		 psIntfAdapter->psAdapter->chip_id);

	iface_desc = psIntfAdapter->interface->cur_altsetting;

	if(psIntfAdapter->psAdapter->chip_id == T3B)
	{
		//
		//T3B device will have EEPROM,check if EEPROM is proper and BCM16 can be done or not.
		//
		BeceemEEPROMBulkRead(psIntfAdapter->psAdapter,&uiData,0x0,4);
		if(uiData == BECM)
			bBcm16 = TRUE;

		dev_info(&psIntfAdapter->udev->dev, "number of alternate setting %d\n",
			 psIntfAdapter->interface->num_altsetting);

		if(bBcm16 == TRUE)
		{
			//selecting alternate setting one as a default setting for High Speed  modem.
			if(psIntfAdapter->bHighSpeedDevice)
				retval= usb_set_interface(psIntfAdapter->udev,DEFAULT_SETTING_0,ALTERNATE_SETTING_1);
			BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "BCM16 is Applicable on this dongle");
			if(retval || (psIntfAdapter->bHighSpeedDevice == FALSE))
			{
				usedIntOutForBulkTransfer = EP2 ;
				endpoint = &iface_desc->endpoint[EP2].desc;
				BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Interface altsetting  got failed or Moemd is configured to FS.hence will work on default setting 0 \n");
				/*
				If Modem is high speed device EP2 should be INT OUT End point
				If Mode is FS then EP2 should be bulk end point
				*/
				if(((psIntfAdapter->bHighSpeedDevice ==TRUE ) && (bcm_usb_endpoint_is_int_out(endpoint)== FALSE))
					||((psIntfAdapter->bHighSpeedDevice == FALSE)&& (bcm_usb_endpoint_is_bulk_out(endpoint)== FALSE)))
				{
					BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL,"Configuring the EEPROM ");
					//change the EP2, EP4 to INT OUT end point
					ConfigureEndPointTypesThroughEEPROM(psIntfAdapter->psAdapter);

					/*
					It resets the device and if any thing gets changed in USB descriptor it will show fail and
					re-enumerate the device
					*/
					retval = usb_reset_device(psIntfAdapter->udev);
					if(retval)
					{
						BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "reset got failed. hence Re-enumerating the device \n");
						return retval ;
					}

				}
				if((psIntfAdapter->bHighSpeedDevice == FALSE) && bcm_usb_endpoint_is_bulk_out(endpoint))
				{
					// Once BULK is selected in FS mode. Revert it back to INT. Else USB_IF will fail.
					UINT _uiData = ntohl(EP2_CFG_INT);
					BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL,"Reverting Bulk to INT as it is FS MODE");
					BeceemEEPROMBulkWrite(psIntfAdapter->psAdapter,(PUCHAR)&_uiData,0x136,4,TRUE);
				}
			}
			else
			{
				usedIntOutForBulkTransfer = EP4 ;
				endpoint = &iface_desc->endpoint[EP4].desc;
				BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Choosing AltSetting as a default setting");
				if( bcm_usb_endpoint_is_int_out(endpoint) == FALSE)
				{
					BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, " Dongle does not have BCM16 Fix");
					//change the EP2, EP4 to INT OUT end point and use EP4 in altsetting
					ConfigureEndPointTypesThroughEEPROM(psIntfAdapter->psAdapter);

					/*
					It resets the device and if any thing gets changed in USB descriptor it will show fail and
					re-enumerate the device
					*/
					retval = usb_reset_device(psIntfAdapter->udev);
					if(retval)
					{
						BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "reset got failed. hence Re-enumerating the device \n");
						return retval ;
					}

				}
			}
		}
	}

	iface_desc = psIntfAdapter->interface->cur_altsetting;

	for (value = 0; value < iface_desc->desc.bNumEndpoints; ++value)
	{
		endpoint = &iface_desc->endpoint[value].desc;

        if (!psIntfAdapter->sBulkIn.bulk_in_endpointAddr && bcm_usb_endpoint_is_bulk_in(endpoint))
        {
            buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
            psIntfAdapter->sBulkIn.bulk_in_size = buffer_size;
            psIntfAdapter->sBulkIn.bulk_in_endpointAddr =
								endpoint->bEndpointAddress;
	    	psIntfAdapter->sBulkIn.bulk_in_pipe =
					usb_rcvbulkpipe(psIntfAdapter->udev,
								psIntfAdapter->sBulkIn.bulk_in_endpointAddr);
        }

        if (!psIntfAdapter->sBulkOut.bulk_out_endpointAddr && bcm_usb_endpoint_is_bulk_out(endpoint))
        {

			psIntfAdapter->sBulkOut.bulk_out_endpointAddr =
										endpoint->bEndpointAddress;
	    	psIntfAdapter->sBulkOut.bulk_out_pipe =
			usb_sndbulkpipe(psIntfAdapter->udev,
					psIntfAdapter->sBulkOut.bulk_out_endpointAddr);
        }

        if (!psIntfAdapter->sIntrIn.int_in_endpointAddr && bcm_usb_endpoint_is_int_in(endpoint))
        {
            buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
            psIntfAdapter->sIntrIn.int_in_size = buffer_size;
            psIntfAdapter->sIntrIn.int_in_endpointAddr =
								endpoint->bEndpointAddress;
            psIntfAdapter->sIntrIn.int_in_interval = endpoint->bInterval;
            psIntfAdapter->sIntrIn.int_in_buffer =
						kmalloc(buffer_size, GFP_KERNEL);
            if (!psIntfAdapter->sIntrIn.int_in_buffer) {
		    dev_err(&psIntfAdapter->udev->dev,
			    "could not allocate interrupt_in_buffer\n");
                return -EINVAL;
            }
        }

        if (!psIntfAdapter->sIntrOut.int_out_endpointAddr && bcm_usb_endpoint_is_int_out(endpoint))
        {

			if( !psIntfAdapter->sBulkOut.bulk_out_endpointAddr &&
				(psIntfAdapter->psAdapter->chip_id == T3B) && (value == usedIntOutForBulkTransfer))
			{
				//use first intout end point as a bulk out end point
            	buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
            	psIntfAdapter->sBulkOut.bulk_out_size = buffer_size;
				//printk("\nINT OUT Endpoing buffer size :%x endpoint :%x\n", buffer_size, value +1);
				psIntfAdapter->sBulkOut.bulk_out_endpointAddr =
										endpoint->bEndpointAddress;
	    		psIntfAdapter->sBulkOut.bulk_out_pipe =
				usb_sndintpipe(psIntfAdapter->udev,
					psIntfAdapter->sBulkOut.bulk_out_endpointAddr);
          	  	psIntfAdapter->sBulkOut.int_out_interval = endpoint->bInterval;

			}
			else if(value == EP6)
			{
	            buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
	            psIntfAdapter->sIntrOut.int_out_size = buffer_size;
	            psIntfAdapter->sIntrOut.int_out_endpointAddr =
										endpoint->bEndpointAddress;
	            psIntfAdapter->sIntrOut.int_out_interval = endpoint->bInterval;
	            psIntfAdapter->sIntrOut.int_out_buffer= kmalloc(buffer_size,
														GFP_KERNEL);
	            	if (!psIntfAdapter->sIntrOut.int_out_buffer)
			{
				dev_err(&psIntfAdapter->udev->dev,
					"could not allocate interrupt_out_buffer\n");
					return -EINVAL;
			}
        }
    }
	}
    usb_set_intfdata(psIntfAdapter->interface, psIntfAdapter);

	psIntfAdapter->psAdapter->bcm_file_download = InterfaceFileDownload;
	psIntfAdapter->psAdapter->bcm_file_readback_from_chip =
				InterfaceFileReadbackFromChip;
	psIntfAdapter->psAdapter->interface_transmit = InterfaceTransmitPacket;

	retval = CreateInterruptUrb(psIntfAdapter);

	if(retval)
	{
		BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_PRINTK, 0, 0, "Cannot create interrupt urb");
		return retval;
	}

	retval = AllocUsbCb(psIntfAdapter);
	if(retval)
	{
		return retval;
	}


	return device_run(psIntfAdapter);
}

static int InterfaceSuspend (struct usb_interface *intf, pm_message_t message)
{
	PS_INTERFACE_ADAPTER  psIntfAdapter = usb_get_intfdata(intf);

	psIntfAdapter->bSuspended = TRUE;

	if(TRUE == psIntfAdapter->bPreparingForBusSuspend)
	{
		psIntfAdapter->bPreparingForBusSuspend = FALSE;

		if(psIntfAdapter->psAdapter->LinkStatus == LINKUP_DONE)
		{
			psIntfAdapter->psAdapter->IdleMode = TRUE ;
			BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Host Entered in PMU Idle Mode..");
		}
		else
		{
			psIntfAdapter->psAdapter->bShutStatus = TRUE;
			BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, DRV_ENTRY, DBG_LVL_ALL, "Host Entered in PMU Shutdown Mode..");
		}
	}
	psIntfAdapter->psAdapter->bPreparingForLowPowerMode = FALSE;

	//Signaling the control pkt path
	wake_up(&psIntfAdapter->psAdapter->lowpower_mode_wait_queue);

	return 0;
}

static int InterfaceResume (struct usb_interface *intf)
{
    PS_INTERFACE_ADAPTER  psIntfAdapter = usb_get_intfdata(intf);
	printk("=================================\n");
	mdelay(100);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
 	intf->pm_usage_cnt =1 ;
#endif
	psIntfAdapter->bSuspended = FALSE;

	StartInterruptUrb(psIntfAdapter);
	InterfaceRx(psIntfAdapter);
	return 0;
}

static struct usb_driver usbbcm_driver = {
    .name = "usbbcm",
    .probe = usbbcm_device_probe,
    .disconnect = usbbcm_disconnect,
    .suspend = InterfaceSuspend,
    .resume = InterfaceResume,
    .id_table = InterfaceUsbtable,
    .supports_autosuspend = 1,
};

struct class *bcm_class;


static __init int bcm_init(void)
{
	printk(KERN_INFO "%s: %s, %s\n", DRV_NAME, DRV_DESCRIPTION, DRV_VERSION);
	printk(KERN_INFO "%s\n", DRV_COPYRIGHT);

	bcm_class = class_create(THIS_MODULE, DRV_NAME);
	if (IS_ERR(bcm_class)) {
		printk(KERN_ERR DRV_NAME ": could not create class\n");
		return PTR_ERR(bcm_class);
	}

	return usb_register(&usbbcm_driver);
}

static __exit void bcm_exit(void)
{
        class_destroy (bcm_class);

	usb_deregister(&usbbcm_driver);
}

module_init(bcm_init);
module_exit(bcm_exit);

MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_VERSION(DRV_VERSION);
MODULE_LICENSE ("GPL");