From 57d04eb131ec9df067028aef278867b4920177c3 Mon Sep 17 00:00:00 2001 From: Vikas Sajjan Date: Mon, 11 Feb 2013 12:58:00 +0200 Subject: usb: xhci: add the suspend/resume functionality Adds power management support to xHCI platform driver. This patch facilitates the transition of xHCI host controller between S0 and S3/S4 power states, during suspend/resume cycles. Signed-off-by: Abhilash Kesavan Signed-off-by: Vikas C Sajjan CC: Doug Anderson Signed-off-by: Felipe Balbi Signed-off-by: Sarah Sharp --- drivers/usb/host/xhci-plat.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'drivers/usb/host/xhci-plat.c') diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 51e22bf89505..412fe8d167cf 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -186,11 +186,37 @@ static int xhci_plat_remove(struct platform_device *dev) return 0; } +#ifdef CONFIG_PM +static int xhci_plat_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + return xhci_suspend(xhci); +} + +static int xhci_plat_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + return xhci_resume(xhci, 0); +} + +static const struct dev_pm_ops xhci_plat_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume) +}; +#define DEV_PM_OPS (&xhci_plat_pm_ops) +#else +#define DEV_PM_OPS NULL +#endif /* CONFIG_PM */ + static struct platform_driver usb_xhci_driver = { .probe = xhci_plat_probe, .remove = xhci_plat_remove, .driver = { .name = "xhci-hcd", + .pm = DEV_PM_OPS, }, }; MODULE_ALIAS("platform:xhci-hcd"); -- cgit v1.2.3