コード例 #1
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;
}
コード例 #2
0
ファイル: ehci-s5p.c プロジェクト: ShedrockN4/wiliteneo
static ssize_t store_ehci_power(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct usb_hcd *hcd = dev_get_drvdata(dev);
	struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
	int power_on;
	int irq;
	int retval;

	if (sscanf(buf, "%d", &power_on) != 1)
		return -EINVAL;

	device_lock(dev);

	if (!power_on && s5p_ehci->power_on) {
		dev_info(dev, "EHCI turn off\n");
		pm_runtime_forbid(dev);
		s5p_ehci->power_on = 0;
		usb_remove_hcd(hcd);

		if (s5p_ehci->phy) {
			/* Shutdown PHY only if it wasn't shutdown before */
			if (!s5p_ehci->post_lpa_resume)
				usb_phy_shutdown(s5p_ehci->phy);
		} else if (s5p_ehci->pdata->phy_exit) {
			s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
		}
	} else if (power_on) {
		dev_info(dev, "EHCI turn on\n");
		if (s5p_ehci->power_on) {
			pm_runtime_forbid(dev);
			usb_remove_hcd(hcd);
		} else {
			s5p_ehci_phy_init(pdev);
		}

		irq = platform_get_irq(pdev, 0);
		retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
		if (retval < 0) {
			dev_err(dev, "Power On Fail\n");
			goto exit;
		}

		/*
		 * EHCI root hubs are expected to handle remote wakeup.
		 * So, wakeup flag init defaults for root hubs.
		 */
		device_wakeup_enable(&hcd->self.root_hub->dev);

		s5p_ehci->power_on = 1;
		pm_runtime_allow(dev);
	}
exit:
	device_unlock(dev);
	return count;
}
コード例 #3
0
int s5p_phy_init_ext(unsigned int cmd, unsigned long arg, void *p)
{
	if (cmd <= PHY_CMD_EHCI) {
		s5p_ehci_phy_init(cmd, (struct usb_hcd *) p);
	}
	else {
		s5p_sdhci_phy_init((struct platform_device *) arg);
	}
	return 0;
}
コード例 #4
0
static ssize_t store_ehci_power(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
	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;
	int power_on;
	int irq;
	int retval;

	if (sscanf(buf, "%d", &power_on) != 1)
		return -EINVAL;

	device_lock(dev);

	if (!power_on && s5p_ehci->power_on) {
		printk(KERN_DEBUG "%s: EHCI turns off\n", __func__);
		pm_runtime_forbid(dev);
		s5p_ehci->power_on = 0;
		usb_remove_hcd(hcd);

		if (pdata && pdata->phy_exit)
			pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
	} else if (power_on) {
		printk(KERN_DEBUG "%s: EHCI turns on\n", __func__);
		if (s5p_ehci->power_on) {
			pm_runtime_forbid(dev);
			usb_remove_hcd(hcd);
		} else
			s5p_ehci_phy_init(pdev);

		irq = platform_get_irq(pdev, 0);
		retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
		if (retval < 0) {
			dev_err(dev, "Power On Fail\n");
			goto exit;
		}

		/*
		 * EHCI root hubs are expected to handle remote wakeup.
		 * So, wakeup flag init defaults for root hubs.
		 */
		device_wakeup_enable(&hcd->self.root_hub->dev);

		s5p_ehci->power_on = 1;
		pm_runtime_allow(dev);
	}
exit:
	device_unlock(dev);
	return count;
}
コード例 #5
0
static int __devinit s5p_ehci_probe(struct platform_device *pdev)
{
	struct s5p_ehci_platdata *pdata;
	struct s5p_ehci_hcd *s5p_ehci;
	struct usb_hcd *hcd;
	struct ehci_hcd *ehci;
	struct resource *res;
	int irq;
	int err;

	pdata = pdev->dev.platform_data;
	if (!pdata) {
		dev_err(&pdev->dev, "No platform data defined\n");
		return -EINVAL;
	}

	s5p_ehci = kzalloc(sizeof(struct s5p_ehci_hcd), GFP_KERNEL);
	if (!s5p_ehci)
		return -ENOMEM;
	s5p_ehci->dev = &pdev->dev;

	hcd = usb_create_hcd(&s5p_ehci_hc_driver, &pdev->dev,
					dev_name(&pdev->dev));
	if (!hcd) {
		dev_err(&pdev->dev, "Unable to create HCD\n");
		err = -ENOMEM;
		goto fail_hcd;
	}

	s5p_ehci->hcd = hcd;
	s5p_ehci->clk = clk_get(&pdev->dev, "usbhost");

	if (IS_ERR(s5p_ehci->clk)) {
		dev_err(&pdev->dev, "Failed to get usbhost clock\n");
		err = PTR_ERR(s5p_ehci->clk);
		goto fail_clk;
	}

	err = clk_enable(s5p_ehci->clk);
	if (err)
		goto fail_clken;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "Failed to get I/O memory\n");
		err = -ENXIO;
		goto fail_io;
	}

	hcd->rsrc_start = res->start;
	hcd->rsrc_len = resource_size(res);
	hcd->regs = ioremap(res->start, resource_size(res));
	if (!hcd->regs) {
		dev_err(&pdev->dev, "Failed to remap I/O memory\n");
		err = -ENOMEM;
		goto fail_io;
	}

	irq = platform_get_irq(pdev, 0);
	if (!irq) {
		dev_err(&pdev->dev, "Failed to get IRQ\n");
		err = -ENODEV;
		goto fail;
	}

	platform_set_drvdata(pdev, s5p_ehci);

	s5p_ehci_phy_init(pdev);

	ehci = hcd_to_ehci(hcd);
	ehci->caps = hcd->regs;
	ehci->regs = hcd->regs +
		HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));

	dbg_hcs_params(ehci, "reset");
	dbg_hcc_params(ehci, "reset");

	/* cache this readonly data; minimize chip reads */
	ehci->hcs_params = readl(&ehci->caps->hcs_params);

	err = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
	if (err) {
		dev_err(&pdev->dev, "Failed to add USB HCD\n");
		goto fail;
	}

	create_ehci_sys_file(ehci);
	s5p_ehci->power_on = 1;

#ifdef CONFIG_USB_SUSPEND
	pm_runtime_set_active(&pdev->dev);
	pm_runtime_enable(&pdev->dev);
#endif
#ifdef CONFIG_MDM_HSIC_PM
	/* halt controller before driving suspend on ths bus */
	ehci->susp_sof_bug = 1;

	set_host_stat(hsic_pm_dev, POWER_ON);
	pm_runtime_allow(&pdev->dev);
	pm_runtime_set_autosuspend_delay(&hcd->self.root_hub->dev, 0);

	pm_runtime_forbid(&pdev->dev);
	enable_periodic(ehci);
#endif

#ifdef CONFIG_EHCI_IRQ_DISTRIBUTION
	if (num_possible_cpus() > 1) {
		s5p_ehci_irq_no = irq;
		s5p_ehci_irq_cpu = s5p_ehci_cpus[num_possible_cpus() - 1];
		irq_set_affinity(s5p_ehci_irq_no, cpumask_of(s5p_ehci_irq_cpu));
		register_cpu_notifier(&s5p_ehci_cpu_notifier);
	}
#endif

#if defined(CONFIG_LINK_DEVICE_HSIC) || defined(CONFIG_LINK_DEVICE_USB)
	/* for cp enumeration */
	pm_runtime_forbid(&pdev->dev);
	/*HSIC IPC control the ACTIVE_STATE*/
	if (pdata && pdata->noti_host_states)
		pdata->noti_host_states(pdev, S5P_HOST_ON);
#endif

	return 0;

fail:
	iounmap(hcd->regs);
fail_io:
	clk_disable(s5p_ehci->clk);
fail_clken:
	clk_put(s5p_ehci->clk);
fail_clk:
	usb_put_hcd(hcd);
fail_hcd:
	kfree(s5p_ehci);
	return err;
}
コード例 #6
0
static ssize_t store_ehci_power(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
	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;
	int power_on;
	int irq;
	int retval;

	if (sscanf(buf, "%d", &power_on) != 1)
		return -EINVAL;

	device_lock(dev);

	if (!power_on && s5p_ehci->power_on) {
		printk(KERN_DEBUG "%s: EHCI turns off\n", __func__);
#if defined(CONFIG_LINK_DEVICE_HSIC) || defined(CONFIG_LINK_DEVICE_USB)
		if (hcd->self.root_hub)
			pm_runtime_forbid(&hcd->self.root_hub->dev);
#endif
		pm_runtime_forbid(dev);
		s5p_ehci->power_on = 0;
		usb_remove_hcd(hcd);

		if (pdata && pdata->phy_exit)
			pdata->phy_exit(pdev, S5P_USB_PHY_HOST);

#if defined(CONFIG_LINK_DEVICE_HSIC) || defined(CONFIG_LINK_DEVICE_USB)
		/*HSIC IPC control the ACTIVE_STATE*/
		if (pdata && pdata->noti_host_states)
			pdata->noti_host_states(pdev, S5P_HOST_OFF);
#endif
	} else if (power_on) {
		printk(KERN_DEBUG "%s: EHCI turns on\n", __func__);
		if (s5p_ehci->power_on) {
			pm_runtime_forbid(dev);
			usb_remove_hcd(hcd);
#if defined(CONFIG_LINK_DEVICE_HSIC) || defined(CONFIG_LINK_DEVICE_USB)
			/*HSIC IPC control the ACTIVE_STATE*/
			if (pdata && pdata->noti_host_states)
				pdata->noti_host_states(pdev, S5P_HOST_OFF);
#endif
		} else
			s5p_ehci_phy_init(pdev);

		irq = platform_get_irq(pdev, 0);
		retval = usb_add_hcd(hcd, irq,
				IRQF_DISABLED | IRQF_SHARED);
		if (retval < 0) {
			dev_err(dev, "Power On Fail\n");
			goto exit;
		}

		s5p_ehci->power_on = 1;
#if defined(CONFIG_LINK_DEVICE_HSIC) || defined(CONFIG_LINK_DEVICE_USB)
		/* Sometimes XMM6262 send remote wakeup when hub enter suspend
		 * So, set the hub waiting 500ms autosuspend delay*/
		if (hcd->self.root_hub)
			pm_runtime_set_autosuspend_delay(
				&hcd->self.root_hub->dev,
				msecs_to_jiffies(500));

		/*HSIC IPC control the ACTIVE_STATE*/
		if (pdata && pdata->noti_host_states)
			pdata->noti_host_states(pdev, S5P_HOST_ON);
#endif
		pm_runtime_allow(dev);
	}
exit:
	device_unlock(dev);
	return count;
}
コード例 #7
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;
}
コード例 #8
0
static int __devinit s5p_ehci_probe(struct platform_device *pdev)
{
	struct s5p_ehci_platdata *pdata;
	struct s5p_ehci_hcd *s5p_ehci;
	struct usb_hcd *hcd;
	struct ehci_hcd *ehci;
	struct resource *res;
	int irq;
	int err;

	pdata = pdev->dev.platform_data;
	if (!pdata) {
		dev_err(&pdev->dev, "No platform data defined\n");
		return -EINVAL;
	}

	s5p_ehci = kzalloc(sizeof(struct s5p_ehci_hcd), GFP_KERNEL);
	if (!s5p_ehci)
		return -ENOMEM;

	s5p_ehci->dev = &pdev->dev;

	hcd = usb_create_hcd(&s5p_ehci_hc_driver, &pdev->dev,
					dev_name(&pdev->dev));
	if (!hcd) {
		dev_err(&pdev->dev, "Unable to create HCD\n");
		err = -ENOMEM;
		goto fail_hcd;
	}

	s5p_ehci->hcd = hcd;
	s5p_ehci->clk = clk_get(&pdev->dev, "usbhost");

	if (IS_ERR(s5p_ehci->clk)) {
		dev_err(&pdev->dev, "Failed to get usbhost clock\n");
		err = PTR_ERR(s5p_ehci->clk);
		goto fail_clk;
	}

	err = clk_enable(s5p_ehci->clk);
	if (err)
		goto fail_clken;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "Failed to get I/O memory\n");
		err = -ENXIO;
		goto fail_io;
	}

	hcd->rsrc_start = res->start;
	hcd->rsrc_len = resource_size(res);
	hcd->regs = ioremap(res->start, resource_size(res));
	if (!hcd->regs) {
		dev_err(&pdev->dev, "Failed to remap I/O memory\n");
		err = -ENOMEM;
		goto fail_io;
	}

	irq = platform_get_irq(pdev, 0);
	if (!irq) {
		dev_err(&pdev->dev, "Failed to get IRQ\n");
		err = -ENODEV;
		goto fail;
	}

	platform_set_drvdata(pdev, s5p_ehci);

	s5p_ehci_phy_init(pdev);

	ehci = hcd_to_ehci(hcd);
	ehci->caps = hcd->regs;
	ehci->regs = hcd->regs +
		HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));

	dbg_hcs_params(ehci, "reset");
	dbg_hcc_params(ehci, "reset");

	/* cache this readonly data; minimize chip reads */
	ehci->hcs_params = readl(&ehci->caps->hcs_params);

	ehci_port_power(ehci, 1);

	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
	if (err) {
		dev_err(&pdev->dev, "Failed to add USB HCD\n");
		goto fail;
	}

	/*
	 * EHCI root hubs are expected to handle remote wakeup.
	 * So, wakeup flag init defaults for root hubs.
	 */
	device_wakeup_enable(&hcd->self.root_hub->dev);

	create_ehci_sys_file(ehci);
	s5p_ehci->power_on = 1;

#ifdef CONFIG_USB_SUSPEND
	pm_runtime_set_active(&pdev->dev);
	pm_runtime_enable(&pdev->dev);
	pm_runtime_get(hcd->self.controller);
#endif
	return 0;

fail:
	iounmap(hcd->regs);
fail_io:
	clk_disable(s5p_ehci->clk);
fail_clken:
	clk_put(s5p_ehci->clk);
fail_clk:
	usb_put_hcd(hcd);
fail_hcd:
	kfree(s5p_ehci);
	return err;
}
コード例 #9
0
static ssize_t store_ehci_power(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
	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;
	int power_on;
	int irq;
	int retval;

	if (sscanf(buf, "%d", &power_on) != 1)
		return -EINVAL;

	device_lock(dev);

	if (!power_on && s5p_ehci->power_on) {
		printk(KERN_DEBUG "%s: EHCI turns off\n", __func__);
#if defined(CONFIG_LINK_DEVICE_HSIC) || defined(CONFIG_LINK_DEVICE_USB)
		if (hcd->self.root_hub)
			pm_runtime_forbid(&hcd->self.root_hub->dev);
#endif
		pm_runtime_forbid(dev);
		s5p_ehci->power_on = 0;
		usb_remove_hcd(hcd);

		if (pdata && pdata->phy_exit)
			pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
	} else if (power_on) {
		printk(KERN_DEBUG "%s: EHCI turns on\n", __func__);
		if (s5p_ehci->power_on) {
			pm_runtime_forbid(dev);
			usb_remove_hcd(hcd);
		} else
			s5p_ehci_phy_init(pdev);

		irq = platform_get_irq(pdev, 0);
		retval = usb_add_hcd(hcd, irq,
				IRQF_DISABLED | IRQF_SHARED);
		if (retval < 0) {
			dev_err(dev, "Power On Fail\n");
			goto exit;
		}

		/*
		 * EHCI root hubs are expected to handle remote wakeup.
		 * So, wakeup flag init defaults for root hubs.
		 */
		device_wakeup_enable(&hcd->self.root_hub->dev);

		s5p_ehci->power_on = 1;
#if defined(CONFIG_LINK_DEVICE_HSIC) || defined(CONFIG_LINK_DEVICE_USB)
		/* Sometimes XMM6262 send remote wakeup when hub enter suspend
		 * So, set the hub waiting 500ms autosuspend delay*/
		if (hcd->self.root_hub)
			pm_runtime_set_autosuspend_delay(
				&hcd->self.root_hub->dev, 500);
		/* mif allow the ehci runtime after enumeration */
		pm_runtime_forbid(dev);
#else
		pm_runtime_allow(dev);
#endif
	}
exit:
	device_unlock(dev);
	return count;
}