Exemplo n.º 1
0
static int ehci_hcd_s5pv210_runtime_resume(struct device *dev)
{
	int rc = 0;
	if (dev->power.status != DPM_RESUMING)
		rc = usb_host_phy_resume();
	if (rc) {
		struct usb_hcd *hcd = s5pv210_hcd;
		struct ehci_hcd *ehci = hcd_to_ehci(hcd);
		/* emptying the schedule aborts any urbs */
		spin_lock_irq(&ehci->lock);
		if (ehci->reclaim)
			end_unlink_async(ehci);
		ehci_work(ehci);
		spin_unlock_irq(&ehci->lock);

#if defined(CONFIG_ARCH_S5PV310)
		writel(0x03C00000, hcd->regs + 0x90);
#endif
		ehci_writel(ehci, ehci->command, &ehci->regs->command);
		ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
		ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

		/* here we "know" root ports should always stay powered */
		ehci_port_power(ehci, 1);

		hcd->state = HC_STATE_SUSPENDED;
		usb_root_hub_lost_power(hcd->self.root_hub);
	}
	dev_dbg(dev, "phy resume, p.s=%d, rc=%d\n", dev->power.status, rc);
	return 0;
}
Exemplo n.º 2
0
static int stm_ohci_bus_suspend(struct usb_hcd *hcd)
{
	dgb_print("\n");
	ohci_bus_suspend(hcd);
	usb_root_hub_lost_power(hcd->self.root_hub);
	return 0;
}
Exemplo n.º 3
0
static int s5pv210_ehci_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);

	usb_host_phy_power_init(pdev);
	if (s5pv210_hcd == NULL) {
		dev_info(dev, "Nothing to do for the device (power off)\n");
		return 0;
	}
	ehci_info(ehci, "resume\n");
	pm_runtime_resume(&pdev->dev);
	s5pv210_start_ehc();

#if defined(CONFIG_ARCH_S5PV310)
	writel(0x03C00000, hcd->regs + 0x90);
#endif

	if (time_before(jiffies, ehci->next_statechange))
		msleep(10);

	/* Mark hardware accessible again as we are out of D3 state by now */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
		int	mask = INTR_MASK;

		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;
		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);
		return 0;
	}

	ehci_info(ehci, "lost power, restarting\n");
	usb_root_hub_lost_power(hcd->self.root_hub);

	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

	/* here we "know" root ports should always stay powered */
	ehci_port_power(ehci, 1);

	hcd->state = HC_STATE_SUSPENDED;


	return 0;
}
Exemplo n.º 4
0
static int ehci_brcm_resume(struct usb_hcd *hcd)
{
	int ret = 0;

	brcm_usb_resume(hcd);

	if (brcm_pm_deep_sleep()) {
		struct ehci_hcd	*ehci = hcd_to_ehci(hcd);

		usb_root_hub_lost_power(hcd->self.root_hub);

		/*
		 * SWLINUX-1705: Avoid OUT packet underflows during high memory
		 *   bus usage
		 * port_status[0x0f] = Broadcom-proprietary USB_EHCI_INSNREG00
		 * @ 0x90
		 */
		ehci_writel(ehci, 0x00800040, &ehci->regs->port_status[0x10]);
		ehci_writel(ehci, 0x00000001, &ehci->regs->port_status[0x12]);

		(void)ehci_halt(ehci);
		(void)ehci_reset(ehci);

		ehci_writel(ehci, ehci->command, &ehci->regs->command);
		ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
		/* unblock posted writes */
		ehci_readl(ehci, &ehci->regs->command);

		ehci_writel(ehci, 0, &ehci->regs->intr_enable);

		/* re-init operational registers */
		ehci_writel(ehci, 0, &ehci->regs->segment);
		ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list);
		ehci_writel(ehci, (u32) ehci->async->qh_dma,
			&ehci->regs->async_next);

		/* restore CMD_RUN, framelist size, and irq threshold */
		ehci_writel(ehci, ehci->command, &ehci->regs->command);

		/* Some controller/firmware combinations need a delay during
		 * which they set up the port statuses.  See Bugzilla #8190. */
		/* SWLINUX-1929 need extra delay here */
		msleep(10);

		ehci->next_statechange = jiffies + msecs_to_jiffies(5);
		hcd->state = HC_STATE_RUNNING;

		/* Now we can safely re-enable irqs */
		ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);

		/* here we "know" root ports should always stay powered */
		ehci_port_power(ehci, 1);

		return 0;
	}
	ehci_prepare_ports_for_controller_resume(hcd_to_ehci(hcd));
	ret = ehci_bus_resume(hcd);
	return ret;
}
Exemplo n.º 5
0
static int s5p_ehci_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct s5p_ehci_hcd *s5p_ehci = platform_get_drvdata(pdev);
	struct usb_hcd *hcd = s5p_ehci->hcd;
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);

	clk_enable(s5p_ehci->clk);

	s5p_ehci_phy_init(pdev);

	if (time_before(jiffies, ehci->next_statechange))
		msleep(10);

	/* Mark hardware accessible again as we are out of D3 state by now */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
		int	mask = INTR_MASK;

		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;
		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);
		return 0;
	}

	ehci_dbg(ehci, "lost power, restarting\n");
	usb_root_hub_lost_power(hcd->self.root_hub);

	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

	/* here we "know" root ports should always stay powered */
	ehci_port_power(ehci, 1);

	ehci->rh_state = EHCI_RH_SUSPENDED;

	/* Update runtime PM status and clear runtime_error */
	pm_runtime_disable(dev);
	pm_runtime_set_active(dev);
	pm_runtime_enable(dev);

	/* Prevent device from runtime suspend during resume time */
	pm_runtime_get_sync(dev);

	return 0;
}
Exemplo n.º 6
0
int nusmart_ehci_resume(struct platform_device * pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);

	printk(KERN_DEBUG"%s\n", __func__);
	//nusmart_start_ehc();

	if (time_before(jiffies, ehci->next_statechange))
		msleep(100);

	/* Mark hardware accessible again as we are out of D3 state by now */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	/* If CF is still set, we maintained PCI Vaux power.
	 * Just undo the effect of ehci_pci_suspend().
	 */
	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
		int mask = INTR_MASK;

		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;
		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);
		return 0;
	}

	printk(KERN_DEBUG "lost power, restarting\n");
	usb_root_hub_lost_power(hcd->self.root_hub);

	/* Else reset, to cope with power loss or flush-to-storage
	 * style "resume" having let BIOS kick in during reboot.
	 */
	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

	/* here we "know" root ports should always stay powered */
	//ehci_port_power(ehci, 0);
	ehci_port_power(ehci, 1);
	//ehci_port_power(ehci, 2);
	//ehci_port_power(ehci, 3);

	hcd->state = HC_STATE_SUSPENDED;

	return 0;
}
Exemplo n.º 7
0
static int ehci_hcd_au1xxx_drv_resume(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);

	alchemy_usb_control(ALCHEMY_USB_EHCI0, 1);

	//                    

	if (time_before(jiffies, ehci->next_statechange))
		msleep(100);

	/*                                                                 */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	/*                                                  
                                               
  */
	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
		int	mask = INTR_MASK;

		ehci_prepare_ports_for_controller_resume(ehci);
		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;
		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);
		return 0;
	}

	ehci_dbg(ehci, "lost power, restarting\n");
	usb_root_hub_lost_power(hcd->self.root_hub);

	/*                                                        
                                                         
  */
	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);

	/*                                       */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/*                       */

	/*                                                      */
	ehci_port_power(ehci, 1);

	ehci->rh_state = EHCI_RH_SUSPENDED;

	return 0;
}
Exemplo n.º 8
0
static int pxau2h_driver_resume (struct platform_device *pdev)
{
	struct usb_hcd  *hcd = platform_get_drvdata(pdev);
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);

	pxau2h_ehci_clk_set(1);

	if (!info->phy_init || info->phy_init(info->phybase)) {
		printk("%s phy_init failed\n", __func__);
		return 0;
	}

	if (time_before(jiffies, ehci->next_statechange))
		udelay(100);

	/* Mark hardware accessible again */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

#if 0
	/* If CF is still set, we maintained PCI Vaux power.
	 * Just undo the effect of ehci_pci_suspend().
	 */
	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
		int	mask = INTR_MASK;

		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;
		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);
		printk("%s end--------------------------------\n", __func__);
		return 0;
	}
#endif

	usb_root_hub_lost_power(hcd->self.root_hub);
	ehci_halt(ehci);
	ehci_reset(ehci);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

	/* here we "know" root ports should always stay powered */
	ehci_port_power(ehci, 1);

	hcd->state = HC_STATE_SUSPENDED;

	return 0;
}
Exemplo n.º 9
0
static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
{
	struct uhci_hcd *uhci = hcd_to_uhci(hcd);
	u16 pmc_enable = 0;
	/*CharlesTu,2009.08.30,patch uhci device disconnet irq nobody care issue		
	* Before clear D3 mode ,disable UHCI resume interrupt 
	* The right sequence: disconnect->wakeup->D0 mode->clear resume.
	*/
	if (enable_ehci_wake){
		REG8_VAL(USB20_HOST_DEVICE_CFG_BASE_ADDR+0x0304) &= ~0x02;
		REG8_VAL(USB20_HOST_DEVICE_CFG_BASE_ADDR+0x1504) &= ~0x02;
	
		pci_read_config_word(to_pci_dev(uhci_dev(uhci)), 0x84, &pmc_enable);
		pmc_enable &= ~0x03;
		pci_write_config_word(to_pci_dev(uhci_dev(uhci)), 0x84, pmc_enable);
	}
	dev_dbg(uhci_dev(uhci), "%s\n", __func__);

	/* Since we aren't in D3 any more, it's safe to set this flag
	 * even if the controller was dead.
	 */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	spin_lock_irq(&uhci->lock);

	/* Make sure resume from hibernation re-enumerates everything */
	if (hibernated) {
		uhci->reset_hc(uhci);
		finish_reset(uhci);
	}

	/* The firmware may have changed the controller settings during
	 * a system wakeup.  Check it and reconfigure to avoid problems.
	 */
	else {
		check_and_reset_hc(uhci);
	}
	configure_hc(uhci);

	/* Tell the core if the controller had to be reset */
	if (uhci->rh_state == UHCI_RH_RESET)
		usb_root_hub_lost_power(hcd->self.root_hub);

	spin_unlock_irq(&uhci->lock);

	/* If interrupts don't work and remote wakeup is enabled then
	 * the suspended root hub needs to be polled.
	 */
	if (!uhci->RD_enable && hcd->self.root_hub->do_remote_wakeup)
		set_bit(HCD_FLAG_POLL_RH, &hcd->flags);

	/* Does the root hub have a port wakeup pending? */
	usb_hcd_poll_rh_status(hcd);
	return 0;
}
static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated)
{
	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);

	// maybe restore FLADJ

	if (time_before(jiffies, ehci->next_statechange))
		msleep(100);

	/* Mark hardware accessible again as we are out of D3 state by now */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	/* If CF is still set and we aren't resuming from hibernation
	 * then we maintained PCI Vaux power.
	 * Just undo the effect of ehci_pci_suspend().
	 */
	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF &&
				!hibernated) {
		int	mask = INTR_MASK;

		ehci_prepare_ports_for_controller_resume(ehci);
		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;
		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);
		return 0;
	}

	usb_root_hub_lost_power(hcd->self.root_hub);

	/* Else reset, to cope with power loss or flush-to-storage
	 * style "resume" having let BIOS kick in during reboot.
	 */
	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);
	(void) ehci_pci_reinit(ehci, pdev);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

	/* here we "know" root ports should always stay powered */
	ehci_port_power(ehci, 1);

	hcd->state = HC_STATE_SUSPENDED;
	return 0;
}
static int
stm_ehci_bus_suspend(struct usb_hcd *hcd)
{
	ehci_bus_suspend(hcd);
/*
 * force the root hub to be resetted on resume!
 * re-enumerates everything during a standby, mem and hibernation...
 */
	usb_root_hub_lost_power(hcd->self.root_hub);
	return 0;
}
Exemplo n.º 12
0
static int s5p_ehci_runtime_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
	struct s5p_ehci_hcd *s5p_ehci = platform_get_drvdata(pdev);
	struct usb_hcd *hcd = s5p_ehci->hcd;
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	int rc = 0;

	if (dev->power.is_suspended)
		return 0;

	/* platform device isn't suspended */
	if (pdata && pdata->phy_resume)
		rc = pdata->phy_resume(pdev, S5P_USB_PHY_HOST);

	if (rc) {
		s5p_ehci_configurate(hcd);

		/* emptying the schedule aborts any urbs */
		spin_lock_irq(&ehci->lock);
		if (ehci->reclaim)
			end_unlink_async(ehci);
		ehci_work(ehci);
		spin_unlock_irq(&ehci->lock);

		usb_root_hub_lost_power(hcd->self.root_hub);

		ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
		ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);
		(void)ehci_readl(ehci, &ehci->regs->intr_enable);

		/* here we "know" root ports should always stay powered */
		ehci_port_power(ehci, 1);

		hcd->state = HC_STATE_SUSPENDED;
#if 0//def CONFIG_USB_EXYNOS_SWITCH
	} else {
		if (1) //samsung_board_rev_is_0_0()) /* the same board configuration that Mehmet DVT has */
		{
			ehci_hub_control(ehci_to_hcd(ehci),
					SetPortFeature,
					USB_PORT_FEAT_POWER,
					1, NULL, 0);
			/* Flush those writes */
			ehci_readl(ehci, &ehci->regs->command);
			msleep(20);
		}
#endif
	}

	return 0;
}
Exemplo n.º 13
0
static int s5p_ehci_runtime_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
	struct s5p_ehci_hcd *s5p_ehci = platform_get_drvdata(pdev);
	struct usb_hcd *hcd = s5p_ehci->hcd;
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	int rc = 0;

	if (dev->power.is_suspended)
		return 0;

#ifdef CONFIG_MDM_HSIC_PM
	request_active_lock_set(hsic_pm_dev);
#endif
	/* platform device isn't suspended */
	if (pdata && pdata->phy_resume)
		rc = pdata->phy_resume(pdev, S5P_USB_PHY_HOST);

	if (rc) {
		s5p_ehci_configurate(hcd);

		/* emptying the schedule aborts any urbs */
		spin_lock_irq(&ehci->lock);
		if (ehci->reclaim)
			end_unlink_async(ehci);
		ehci_work(ehci);
		spin_unlock_irq(&ehci->lock);

		usb_root_hub_lost_power(hcd->self.root_hub);

		ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
		ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);
		(void)ehci_readl(ehci, &ehci->regs->intr_enable);

		/* here we "know" root ports should always stay powered */
		ehci_port_power(ehci, 1);

		hcd->state = HC_STATE_SUSPENDED;
#ifdef CONFIG_MDM_HSIC_PM
		set_host_stat(hsic_pm_dev, POWER_ON);
		wait_dev_pwr_stat(hsic_pm_dev, POWER_ON);
#endif
#if defined(CONFIG_LINK_DEVICE_HSIC) || defined(CONFIG_LINK_DEVICE_USB) \
		|| defined(CONFIG_MDM_HSIC_PM)
		s5p_wait_for_cp_resume(pdev, hcd);
#endif
	}

	return 0;
}
Exemplo n.º 14
0
static int ehci_spear_drv_resume(struct device *dev)
{
    struct usb_hcd *hcd = dev_get_drvdata(dev);
    struct ehci_hcd *ehci = hcd_to_ehci(hcd);

    if (time_before(jiffies, ehci->next_statechange))
        msleep(100);

    if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
        int mask = INTR_MASK;

        ehci_prepare_ports_for_controller_resume(ehci);

        if (!hcd->self.root_hub->do_remote_wakeup)
            mask &= ~STS_PCD;

        ehci_writel(ehci, mask, &ehci->regs->intr_enable);
        ehci_readl(ehci, &ehci->regs->intr_enable);
        return 0;
    }

    usb_root_hub_lost_power(hcd->self.root_hub);

    /*
     * Else reset, to cope with power loss or flush-to-storage style
     * "resume" having let BIOS kick in during reboot.
     */
    ehci_halt(ehci);
    ehci_reset(ehci);

    /* emptying the schedule aborts any urbs */
    spin_lock_irq(&ehci->lock);
    if (ehci->reclaim)
        end_unlink_async(ehci);

    ehci_work(ehci);
    spin_unlock_irq(&ehci->lock);

    ehci_writel(ehci, ehci->command, &ehci->regs->command);
    ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
    ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

    /* here we "know" root ports should always stay powered */
    ehci_port_power(ehci, 1);
    return 0;
}
Exemplo n.º 15
0
static int s5p_ehci_runtime_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
	struct s5p_ehci_hcd *s5p_ehci = platform_get_drvdata(pdev);
	struct usb_hcd *hcd = s5p_ehci->hcd;
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	int rc = 0;

	if (dev->power.is_suspended)
		return 0;

	/* platform device isn't suspended */
	if (pdata && pdata->phy_resume)
		rc = pdata->phy_resume(pdev, S5P_USB_PHY_HOST);

	if (rc) {
		s5p_ehci_configurate(hcd);

		/* emptying the schedule aborts any urbs */
		spin_lock_irq(&ehci->lock);
		if (ehci->reclaim)
			end_unlink_async(ehci);
		ehci_work(ehci);
		spin_unlock_irq(&ehci->lock);

		usb_root_hub_lost_power(hcd->self.root_hub);

		ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
		ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);
		(void)ehci_readl(ehci, &ehci->regs->intr_enable);

		/* here we "know" root ports should always stay powered */
		ehci_port_power(ehci, 1);

		hcd->state = HC_STATE_SUSPENDED;
	}
#if defined(CONFIG_LINK_DEVICE_HSIC)
	pr_info("%s: usage=%d, child=%d\n", __func__,
					atomic_read(&dev->power.usage_count),
					atomic_read(&dev->power.child_count));
#endif
	return 0;
}
Exemplo n.º 16
0
static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
{
	struct uhci_hcd *uhci = hcd_to_uhci(hcd);

	dev_dbg(uhci_dev(uhci), "%s\n", __func__);

	/* Since we aren't in D3 any more, it's safe to set this flag
	 * even if the controller was dead.
	 */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	spin_lock_irq(&uhci->lock);

	/* Make sure resume from hibernation re-enumerates everything */
	if (hibernated) {
		uhci->reset_hc(uhci);
		finish_reset(uhci);
	}

	/* The firmware may have changed the controller settings during
	 * a system wakeup.  Check it and reconfigure to avoid problems.
	 */
	else {
		check_and_reset_hc(uhci);
	}
	configure_hc(uhci);

	/* Tell the core if the controller had to be reset */
	if (uhci->rh_state == UHCI_RH_RESET)
		usb_root_hub_lost_power(hcd->self.root_hub);

	spin_unlock_irq(&uhci->lock);

	/* If interrupts don't work and remote wakeup is enabled then
	 * the suspended root hub needs to be polled.
	 */
	if (!uhci->RD_enable && hcd->self.root_hub->do_remote_wakeup)
		set_bit(HCD_FLAG_POLL_RH, &hcd->flags);

	/* Does the root hub have a port wakeup pending? */
	usb_hcd_poll_rh_status(hcd);
	return 0;
}
Exemplo n.º 17
0
static int ehci_orion_resume(struct platform_device *pdev)
{
	struct orion_ehci_data *pd = pdev->dev.platform_data;
	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
	
	// maybe restore FLADJ

	if (time_before(jiffies, ehci->next_statechange))
		msleep(100);

	/* Mark hardware accessible again as we are out of D3 state by now */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	ehci_dbg(ehci, "lost power, restarting\n");
	usb_root_hub_lost_power(hcd->self.root_hub);

	/* Else reset, to cope with power loss or flush-to-storage
	 * style "resume" having let BIOS kick in during reboot.
	 */
	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);
	ehci_orion_hw_init(hcd, pd);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

	/* here we "know" root ports should always stay powered */
	ehci_port_power(ehci, 1);

	hcd->state = HC_STATE_SUSPENDED;
	return 0;

}
Exemplo n.º 18
0
static int s5p_ehci_runtime_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
	struct s5p_ehci_hcd *s5p_ehci = platform_get_drvdata(pdev);
	struct usb_hcd *hcd = s5p_ehci->hcd;
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	int rc = 0;

	if (dev->power.is_suspended)
		return 0;

	/* platform device isn't suspended */
	if (pdata && pdata->phy_resume)
		rc = pdata->phy_resume(pdev, S5P_USB_PHY_HOST);

	if (rc) {
		s5p_ehci_configurate(hcd);

		/* emptying the schedule aborts any urbs */
		spin_lock_irq(&ehci->lock);
		if (ehci->reclaim)
			end_unlink_async(ehci);
		ehci_work(ehci);
		spin_unlock_irq(&ehci->lock);

		usb_root_hub_lost_power(hcd->self.root_hub);

		ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
		ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);
		(void)ehci_readl(ehci, &ehci->regs->intr_enable);

		/* here we "know" root ports should always stay powered */
		ehci_port_power(ehci, 1);

		ehci->rh_state = EHCI_RH_SUSPENDED;
	}

	return 0;
}
Exemplo n.º 19
0
static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated)
{
	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);

	/* The BIOS on systems with the Intel Panther Point chipset may or may
	 * not support xHCI natively.  That means that during system resume, it
	 * may switch the ports back to EHCI so that users can use their
	 * keyboard to select a kernel from GRUB after resume from hibernate.
	 *
	 * The BIOS is supposed to remember whether the OS had xHCI ports
	 * enabled before resume, and switch the ports back to xHCI when the
	 * BIOS/OS semaphore is written, but we all know we can't trust BIOS
	 * writers.
	 *
	 * Unconditionally switch the ports back to xHCI after a system resume.
	 * We can't tell whether the EHCI or xHCI controller will be resumed
	 * first, so we have to do the port switchover in both drivers.  Writing
	 * a '1' to the port switchover registers should have no effect if the
	 * port was already switched over.
	 */
	if (usb_is_intel_switchable_ehci(pdev))
		ehci_enable_xhci_companion();

	// maybe restore FLADJ

	if (time_before(jiffies, ehci->next_statechange))
		msleep(100);

	/* Mark hardware accessible again as we are out of D3 state by now */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	/* If CF is still set and we aren't resuming from hibernation
	 * then we maintained PCI Vaux power.
	 * Just undo the effect of ehci_pci_suspend().
	 */
	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF &&
				!hibernated) {
		int	mask = INTR_MASK;

		ehci_prepare_ports_for_controller_resume(ehci);
		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;
		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);
		return 0;
	}

	usb_root_hub_lost_power(hcd->self.root_hub);

	/* Else reset, to cope with power loss or flush-to-storage
	 * style "resume" having let BIOS kick in during reboot.
	 */
	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);
	(void) ehci_pci_reinit(ehci, pdev);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

	/* here we "know" root ports should always stay powered */
	ehci_port_power(ehci, 1);

	ehci->rh_state = EHCI_RH_SUSPENDED;
	return 0;
}
static int s5p_ehci_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct s5p_ehci_hcd *s5p_ehci = platform_get_drvdata(pdev);
	struct usb_hcd *hcd = s5p_ehci->hcd;
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);

	clk_enable(s5p_ehci->clk);
	pm_runtime_resume(&pdev->dev);

	s5p_ehci_phy_init(pdev);

	/* if EHCI was off, hcd was removed */
	if (!s5p_ehci->power_on) {
		dev_info(dev, "Nothing to do for the device (power off)\n");
		return 0;
	}

	if (time_before(jiffies, ehci->next_statechange))
		msleep(10);

	/* Mark hardware accessible again as we are out of D3 state by now */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
		int	mask = INTR_MASK;

		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;
		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);
		return 0;
	}

	ehci_dbg(ehci, "lost power, restarting\n");
	usb_root_hub_lost_power(hcd->self.root_hub);

	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

	/* here we "know" root ports should always stay powered */
	ehci_port_power(ehci, 1);

	hcd->state = HC_STATE_SUSPENDED;
#ifdef CONFIG_MDM_HSIC_PM
	set_host_stat(hsic_pm_dev, POWER_ON);
	wait_dev_pwr_stat(hsic_pm_dev, POWER_ON);
#endif
#if defined(CONFIG_LINK_DEVICE_HSIC) || defined(CONFIG_LINK_DEVICE_USB) \
		|| defined(CONFIG_MDM_HSIC_PM)
	s5p_wait_for_cp_resume(pdev, hcd);
#endif
	return 0;
}
Exemplo n.º 21
0
static int ehci_pci_resume(struct usb_hcd *hcd)
{
	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
	unsigned		port;
	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
	int			retval = -EINVAL;

	// maybe restore FLADJ

	if (time_before(jiffies, ehci->next_statechange))
		msleep(100);

	/* Mark hardware accessible again as we are out of D3 state by now */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	/* If CF is clear, we lost PCI Vaux power and need to restart.  */
	if (readl(&ehci->regs->configured_flag) != FLAG_CF)
		goto restart;

	/* If any port is suspended (or owned by the companion),
	 * we know we can/must resume the HC (and mustn't reset it).
	 * We just defer that to the root hub code.
	 */
	for (port = HCS_N_PORTS(ehci->hcs_params); port > 0; ) {
		u32	status;
		port--;
		status = readl(&ehci->regs->port_status [port]);
		if (!(status & PORT_POWER))
			continue;
		if (status & (PORT_SUSPEND | PORT_RESUME | PORT_OWNER)) {
			usb_hcd_resume_root_hub(hcd);
			return 0;
		}
	}

restart:
	ehci_dbg(ehci, "lost power, restarting\n");
	usb_root_hub_lost_power(hcd->self.root_hub);

	/* Else reset, to cope with power loss or flush-to-storage
	 * style "resume" having let BIOS kick in during reboot.
	 */
	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);
	(void) ehci_pci_reinit(ehci, pdev);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		ehci->reclaim_ready = 1;
	ehci_work(ehci, NULL);
	spin_unlock_irq(&ehci->lock);

	/* restart; khubd will disconnect devices */
	retval = ehci_run(hcd);

	/* here we "know" root ports should always stay powered */
	ehci_port_power(ehci, 1);

	return retval;
}
Exemplo n.º 22
0
static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated)
{
	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);

	/* The BIOS on systems with the Intel Panther Point chipset may or may
	 * not support xHCI natively.  That means that during system resume, it
	 * may switch the ports back to EHCI so that users can use their
	 * keyboard to select a kernel from GRUB after resume from hibernate.
	 *
	 * The BIOS is supposed to remember whether the OS had xHCI ports
	 * enabled before resume, and switch the ports back to xHCI when the
	 * BIOS/OS semaphore is written, but we all know we can't trust BIOS
	 * writers.
	 *
	 * Unconditionally switch the ports back to xHCI after a system resume.
	 * We can't tell whether the EHCI or xHCI controller will be resumed
	 * first, so we have to do the port switchover in both drivers.  Writing
	 * a '1' to the port switchover registers should have no effect if the
	 * port was already switched over.
	 */
	if (usb_is_intel_switchable_ehci(pdev))
		ehci_enable_xhci_companion();

	

	if (time_before(jiffies, ehci->next_statechange))
		msleep(100);

	
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF &&
				!hibernated) {
		int	mask = INTR_MASK;

		ehci_prepare_ports_for_controller_resume(ehci);
		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;
		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);
		return 0;
	}

	usb_root_hub_lost_power(hcd->self.root_hub);

	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);
	(void) ehci_pci_reinit(ehci, pdev);

	
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	

	
	ehci_port_power(ehci, 1);

	ehci->rh_state = EHCI_RH_SUSPENDED;
	return 0;
}
Exemplo n.º 23
0
/*
 * start xHC (not bus-specific)
 *
 * This is called when the machine transition from S3/S4 mode.
 *
 */
int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
{
	u32			command, temp = 0, status;
	struct usb_hcd		*hcd = xhci_to_hcd(xhci);
	struct usb_hcd		*secondary_hcd;
	int			retval = 0;
	bool			comp_timer_running = false;

	if (!hcd->state)
		return 0;

	/* Wait a bit if either of the roothubs need to settle from the
	 * transition into bus suspend.
	 */
	if (time_before(jiffies, xhci->bus_state[0].next_statechange) ||
			time_before(jiffies,
				xhci->bus_state[1].next_statechange))
		msleep(100);

	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &xhci->shared_hcd->flags);

	spin_lock_irq(&xhci->lock);
	if (xhci->quirks & XHCI_RESET_ON_RESUME)
		hibernated = true;

	if (!hibernated) {
		/* step 1: restore register */
		xhci_restore_registers(xhci);
		/* step 2: initialize command ring buffer */
		xhci_set_cmd_ring_deq(xhci);
		/* step 3: restore state and start state*/
		/* step 3: set CRS flag */
		command = readl(&xhci->op_regs->command);
		command |= CMD_CRS;
		writel(command, &xhci->op_regs->command);
		if (xhci_handshake(&xhci->op_regs->status,
			      STS_RESTORE, 0, 10 * 1000)) {
			xhci_warn(xhci, "WARN: xHC restore state timeout\n");
			spin_unlock_irq(&xhci->lock);
			return -ETIMEDOUT;
		}
		temp = readl(&xhci->op_regs->status);
	}

	/* If restore operation fails, re-initialize the HC during resume */
	if ((temp & STS_SRE) || hibernated) {

		if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) &&
				!(xhci_all_ports_seen_u0(xhci))) {
			del_timer_sync(&xhci->comp_mode_recovery_timer);
			xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
				"Compliance Mode Recovery Timer deleted!");
		}

		/* Let the USB core know _both_ roothubs lost power. */
		usb_root_hub_lost_power(xhci->main_hcd->self.root_hub);
		usb_root_hub_lost_power(xhci->shared_hcd->self.root_hub);

		xhci_dbg(xhci, "Stop HCD\n");
		xhci_halt(xhci);
		xhci_reset(xhci);
		spin_unlock_irq(&xhci->lock);
		xhci_cleanup_msix(xhci);

		xhci_dbg(xhci, "// Disabling event ring interrupts\n");
		temp = readl(&xhci->op_regs->status);
		writel(temp & ~STS_EINT, &xhci->op_regs->status);
		temp = readl(&xhci->ir_set->irq_pending);
		writel(ER_IRQ_DISABLE(temp), &xhci->ir_set->irq_pending);
		xhci_print_ir_set(xhci, 0);

		xhci_dbg(xhci, "cleaning up memory\n");
		xhci_mem_cleanup(xhci);
		xhci_dbg(xhci, "xhci_stop completed - status = %x\n",
			    readl(&xhci->op_regs->status));

		/* USB core calls the PCI reinit and start functions twice:
		 * first with the primary HCD, and then with the secondary HCD.
		 * If we don't do the same, the host will never be started.
		 */
		if (!usb_hcd_is_primary_hcd(hcd))
			secondary_hcd = hcd;
		else
			secondary_hcd = xhci->shared_hcd;

		xhci_dbg(xhci, "Initialize the xhci_hcd\n");
		retval = xhci_init(hcd->primary_hcd);
		if (retval)
			return retval;
		comp_timer_running = true;

		xhci_dbg(xhci, "Start the primary HCD\n");
		retval = xhci_run(hcd->primary_hcd);
		if (!retval) {
			xhci_dbg(xhci, "Start the secondary HCD\n");
			retval = xhci_run(secondary_hcd);
		}
		hcd->state = HC_STATE_SUSPENDED;
		xhci->shared_hcd->state = HC_STATE_SUSPENDED;
		goto done;
	}

	/* step 4: set Run/Stop bit */
	command = readl(&xhci->op_regs->command);
	command |= CMD_RUN;
	writel(command, &xhci->op_regs->command);
	xhci_handshake(&xhci->op_regs->status, STS_HALT,
		  0, 250 * 1000);

	/* step 5: walk topology and initialize portsc,
	 * portpmsc and portli
	 */
	/* this is done in bus_resume */

	/* step 6: restart each of the previously
	 * Running endpoints by ringing their doorbells
	 */

	spin_unlock_irq(&xhci->lock);

 done:
	if (retval == 0) {
		/* Resume root hubs only when have pending events. */
		status = readl(&xhci->op_regs->status);
		if (status & STS_EINT) {
			usb_hcd_resume_root_hub(hcd);
			usb_hcd_resume_root_hub(xhci->shared_hcd);
		}
	}

	/*
	 * If system is subject to the Quirk, Compliance Mode Timer needs to
	 * be re-initialized Always after a system resume. Ports are subject
	 * to suffer the Compliance Mode issue again. It doesn't matter if
	 * ports have entered previously to U0 before system's suspension.
	 */
	if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) && !comp_timer_running)
		compliance_mode_recovery_timer_init(xhci);

	/* Re-enable port polling. */
	xhci_dbg(xhci, "%s: starting port polling.\n", __func__);
	set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
	usb_hcd_poll_rh_status(hcd);
	set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags);
	usb_hcd_poll_rh_status(xhci->shared_hcd);

	return retval;
}
Exemplo n.º 24
0
static int sw_ehci_hcd_resume(struct device *dev)
{
	struct sw_hci_hcd *sw_ehci = NULL;
	struct usb_hcd *hcd = NULL;
	struct ehci_hcd *ehci = NULL;

	if (dev == NULL)
		return 0;

	hcd = dev_get_drvdata(dev);
	if (hcd == NULL)
		return 0;

	sw_ehci = dev->platform_data;
	if (sw_ehci == NULL)
		return 0;

	if (sw_ehci->probe == 0)
		return 0;

	ehci = hcd_to_ehci(hcd);
	if (ehci == NULL)
		return 0;

	pr_info("[%s]: resume\n", sw_ehci->hci_name);
	sw_start_ehci(sw_ehci);

	/* Mark hardware accessible again as we are out of D3 state by now */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
		int mask = INTR_MASK;

		ehci_prepare_ports_for_controller_resume(ehci);

		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;

		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);

		return 0;
	}

	pr_info("[%s]: hci lost power, restarting\n", sw_ehci->hci_name);
	usb_root_hub_lost_power(hcd->self.root_hub);

	/* Else reset, to cope with power loss or flush-to-storage
	 * style "resume" having let BIOS kick in during reboot.
	 */
	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

	/* here we "know" root ports should always stay powered */
	ehci_port_power(ehci, 1);

	hcd->state = HC_STATE_SUSPENDED;

	return 0;
}
Exemplo n.º 25
0
static int ehci_hcd_imapx200_drv_resume(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);

	/****************************************************/
	int valTmp,i;
	valTmp = __raw_readl(rPAD_CFG);
	if((valTmp & 0xf) != 0xe)
	{
		printk(KERN_ERR "eeeee\n");
		valTmp = __raw_readl(rPAD_CFG);
		valTmp &= ~0xe;
		__raw_writel(valTmp, rPAD_CFG);
		__raw_writel(0x0, rUSB_SRST);
		for(i=0;i<6000;i++);
		valTmp = __raw_readl(rPAD_CFG);
		valTmp |= 0xe;
		__raw_writel(valTmp,rPAD_CFG);
		mdelay(4);
		__raw_writel(0x5,rUSB_SRST);
		for(i=0;i<6000;i++);
		__raw_writel(0xf,rUSB_SRST);
	}

	// maybe restore FLADJ

	if (time_before(jiffies, ehci->next_statechange))
		msleep(100);

	/* Mark hardware accessible again as we are out of D3 state by now */
	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);

	/* If CF is still set, we maintained PCI Vaux power.
	 * Just undo the effect of ehci_pci_suspend().
	 */
	if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
		int	mask = INTR_MASK;

		if (!hcd->self.root_hub->do_remote_wakeup)
			mask &= ~STS_PCD;
		ehci_writel(ehci, mask, &ehci->regs->intr_enable);
		ehci_readl(ehci, &ehci->regs->intr_enable);
		return 0;
	}

	ehci_dbg(ehci, "lost power, restarting\n");
	usb_root_hub_lost_power(hcd->self.root_hub);

	/* Else reset, to cope with power loss or flush-to-storage
	 * style "resume" having let BIOS kick in during reboot.
	 */
	(void) ehci_halt(ehci);
	(void) ehci_reset(ehci);

	/* emptying the schedule aborts any urbs */
	spin_lock_irq(&ehci->lock);
	if (ehci->reclaim)
		end_unlink_async(ehci);
	ehci_work(ehci);
	spin_unlock_irq(&ehci->lock);

	ehci_writel(ehci, ehci->command, &ehci->regs->command);
	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */

	/* here we "know" root ports should always stay powered */
	ehci_port_power(ehci, 1);

	hcd->state = HC_STATE_SUSPENDED;

	return 0;

}