On Wed, Oct 10, 2012 at 07:35:48PM +0530, Vikas C Sajjan wrote: > From: Vikas Sajjan <[email protected]> > > Adding the suspend and resume functionality for the XHCI driver > > Signed-off-by: Abhilash Kesavan <[email protected]> > Signed-off-by: Vikas C Sajjan <[email protected]> > CC: Doug Anderson <[email protected]>
Acked-by: Sarah Sharp <[email protected]> Felipe, you want to take this? > --- > drivers/usb/host/xhci-plat.c | 44 > ++++++++++++++++++++++++++++++++++++++++++ > 1 files changed, 44 insertions(+), 0 deletions(-) > > diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c > index df90fe5..384cf4d 100644 > --- a/drivers/usb/host/xhci-plat.c > +++ b/drivers/usb/host/xhci-plat.c > @@ -185,11 +185,55 @@ 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; > + struct xhci_hcd *xhci; > + > + hcd = dev_get_drvdata(dev); > + if (!hcd) > + return -EINVAL; > + > + xhci = hcd_to_xhci(hcd); > + > + /* Make sure that the HCD Core as set state HC_STATE_SUSPENDED */ > + if (hcd->state != HC_STATE_SUSPENDED || > + xhci->shared_hcd->state != HC_STATE_SUSPENDED) > + return -EINVAL; > + > + return xhci_suspend(xhci); > +} > + > +static int xhci_plat_resume(struct device *dev) > +{ > + struct usb_hcd *hcd; > + struct xhci_hcd *xhci; > + > + hcd = dev_get_drvdata(dev); > + > + if (!hcd) > + return -EINVAL; > + > + xhci = hcd_to_xhci(hcd); > + > + return xhci_resume(xhci, 0); > +} > + > +static const struct dev_pm_ops xhci_plat_pm_ops = { > + .suspend = xhci_plat_suspend, > + .resume = xhci_plat_resume, > +}; > +#endif > + > static struct platform_driver usb_xhci_driver = { > .probe = xhci_plat_probe, > .remove = xhci_plat_remove, > .driver = { > .name = "xhci-hcd", > +#ifdef CONFIG_PM > + .pm = &xhci_plat_pm_ops, > +#endif > }, > }; > MODULE_ALIAS("platform:xhci-hcd"); > -- > 1.7.6.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
