static int ehci_msm_pm_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
int ret;
u32 portsc;
dev_dbg(dev, "ehci-msm PM resume\n");
if (!hcd->rh_registered)
return 0;
/* Notify OTG to bring hw out of LPM before restoring wakeup flags */
ret = usb_phy_set_suspend(phy, 0);
if (ret)
return ret;
ehci_resume(hcd, false);
portsc = readl_relaxed(USB_PORTSC);
portsc &= ~PORT_RWC_BITS;
portsc |= PORT_RESUME;
writel_relaxed(portsc, USB_PORTSC);
/* Resume root-hub to handle USB event if any else initiate LPM again */
usb_hcd_resume_root_hub(hcd);
return ret;
}
static int ehci_spear_drv_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
ehci_resume(hcd, false);
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);
/* 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 (ehci_resume(hcd, hibernated) != 0)
(void) ehci_pci_reinit(ehci, pdev);
return 0;
}
static int ehci_msm_pm_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
dev_dbg(dev, "ehci-msm PM resume\n");
ehci_resume(hcd, false);
return 0;
}
static int hiusb_ehci_hcd_drv_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
hiusb_start_hcd();
ehci_resume(hcd, false);
return 0;
}
static int
ehci_ebus_resume(device_t self)
{
ehci_softc_t *sc = device_get_softc(self);
ehci_resume(sc);
bus_generic_resume(self);
return (0);
}
static int ehci_platform_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct usb_ehci_pdata *pdata = dev->platform_data;
struct platform_device *pdev =
container_of(dev, struct platform_device, dev);
if (pdata->power_on) {
int err = pdata->power_on(pdev);
if (err < 0)
return err;
}
ehci_resume(hcd, false);
return 0;
}
static int ehci_platform_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
struct platform_device *pdev =
container_of(dev, struct platform_device, dev);
struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd);
if (pdata->power_on) {
int err = pdata->power_on(pdev);
if (err < 0)
return err;
}
ehci_resume(hcd, priv->reset_on_resume);
return 0;
}
static int st_ehci_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
struct platform_device *pdev = to_platform_device(dev);
int err;
pinctrl_pm_select_default_state(dev);
if (pdata->power_on) {
err = pdata->power_on(pdev);
if (err < 0)
return err;
}
ehci_resume(hcd, false);
return 0;
}
static int exynos_ehci_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd);
clk_prepare_enable(exynos_ehci->clk);
if (exynos_ehci->otg)
exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self);
if (exynos_ehci->phy)
usb_phy_init(exynos_ehci->phy);
/* DMA burst Enable */
writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
ehci_resume(hcd, false);
return 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 usb_hcd *hcd = platform_get_drvdata(pdev);
struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
int rc = 0;
if (dev->power.is_suspended)
return 0;
dev_dbg(dev, "%s\n", __func__);
if (s5p_ehci->phy) {
struct usb_phy *phy = s5p_ehci->phy;
if (s5p_ehci->post_lpa_resume)
usb_phy_init(phy);
pm_runtime_get_sync(phy->dev);
} else if (pdata && pdata->phy_resume) {
rc = pdata->phy_resume(pdev, USB_PHY_TYPE_HOST);
s5p_ehci->post_lpa_resume = !!rc;
}
if (s5p_ehci->post_lpa_resume)
s5p_ehci_configurate(hcd);
ehci_resume(hcd, false);
/*
* REVISIT: in case of LPA bus won't be resumed, so we do it here.
* Alternatively, we can try to setup HC in such a way that it starts
* to sense connections. In this case, root hub will be resumed from
* interrupt (ehci_irq()).
*/
if (s5p_ehci->post_lpa_resume)
usb_hcd_resume_root_hub(hcd);
s5p_ehci->post_lpa_resume = 0;
return 0;
}
static int ehci_platform_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
struct platform_device *pdev = to_platform_device(dev);
struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd);
struct device *companion_dev;
if (pdata->power_on) {
int err = pdata->power_on(pdev);
if (err < 0)
return err;
}
companion_dev = usb_of_get_companion_dev(hcd->self.controller);
if (companion_dev) {
device_pm_wait_for_dev(hcd->self.controller, companion_dev);
put_device(companion_dev);
}
ehci_resume(hcd, priv->reset_on_resume);
return 0;
}
static int s5p_ehci_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
struct platform_device *pdev = to_platform_device(dev);
s5p_ehci_clk_prepare_enable(s5p_ehci);
if (s5p_ehci->otg)
s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
if (s5p_ehci->phy) {
usb_phy_init(s5p_ehci->phy);
s5p_ehci->post_lpa_resume = 0;
/*
* We are going to change runtime status to active.
* Make sure we get the phy only if we didn't get it before.
*/
if (pm_runtime_suspended(dev))
pm_runtime_get_sync(s5p_ehci->phy->dev);
} else if (s5p_ehci->pdata->phy_init) {
s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);
}
/* DMA burst Enable */
writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
ehci_resume(hcd, false);
/* Update runtime PM status and clear runtime_error */
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
return 0;
}
