USB: xHCI: PCI power management implementation

[linux-flexiantxendom0.git] / drivers / usb / host / xhci-pci.c

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 3865f8c..bb668a8 100644 (file)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -116,6 +116,30 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
        return xhci_pci_reinit(xhci, pdev);
 }
 
+#ifdef CONFIG_PM
+static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
+{
+       struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+       int     retval = 0;
+
+       if (hcd->state != HC_STATE_SUSPENDED)
+               return -EINVAL;
+
+       retval = xhci_suspend(xhci);
+
+       return retval;
+}
+
+static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
+{
+       struct xhci_hcd         *xhci = hcd_to_xhci(hcd);
+       int                     retval = 0;
+
+       retval = xhci_resume(xhci, hibernated);
+       return retval;
+}
+#endif /* CONFIG_PM */
+
 static const struct hc_driver xhci_pci_hc_driver = {
        .description =          hcd_name,
        .product_desc =         "xHCI Host Controller",
@@ -132,7 +156,10 @@ static const struct hc_driver xhci_pci_hc_driver = {
         */
        .reset =                xhci_pci_setup,
        .start =                xhci_run,
-       /* suspend and resume implemented later */
+#ifdef CONFIG_PM
+       .pci_suspend =          xhci_pci_suspend,
+       .pci_resume =           xhci_pci_resume,
+#endif
        .stop =                 xhci_stop,
        .shutdown =             xhci_shutdown,
 
@@ -188,6 +215,11 @@ static struct pci_driver xhci_pci_driver = {
        /* suspend and resume implemented later */
 
        .shutdown =     usb_hcd_pci_shutdown,
+#ifdef CONFIG_PM_SLEEP
+       .driver = {
+               .pm = &usb_hcd_pci_pm_ops
+       },
+#endif
 };
 
 int xhci_register_pci(void)