From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vikas C Sajjan Subject: [PATCH 2/3] usb: xhci: Add the suspend/resume functionality Date: Wed, 10 Oct 2012 19:35:48 +0530 Message-ID: <1349877949-18872-3-git-send-email-vikas.sajjan@linaro.org> References: <1349877949-18872-1-git-send-email-vikas.sajjan@linaro.org> Return-path: Received: from mailout3.samsung.com ([203.254.224.33]:41802 "EHLO mailout3.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756353Ab2JJOCV (ORCPT ); Wed, 10 Oct 2012 10:02:21 -0400 In-reply-to: <1349877949-18872-1-git-send-email-vikas.sajjan@linaro.org> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-usb@vger.kernel.org Cc: linux-omap@vger.kernel.org, gregkh@linuxfoundation.org, sarah.a.sharp@linux.intel.com, balbi@ti.com, Vikas Sajjan , Abhilash Kesavan , Doug Anderson From: Vikas Sajjan Adding the suspend and resume functionality for the XHCI driver Signed-off-by: Abhilash Kesavan Signed-off-by: Vikas C Sajjan CC: Doug Anderson --- 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