Ok, I've added this patch to my for-usb-next-queue branch. I'll be
sending it off to Greg for 3.10 after 3.9-rc1 is out and he's accepting
pull requests again.
Sarah Sharp
On Mon, Feb 11, 2013 at 12:58:00PM +0200, Felipe Balbi wrote:
> From: Vikas Sajjan <vikas.sajjan@xxxxxxxxxx>
>
> 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 <a.kesavan@xxxxxxxxxxx>
> Signed-off-by: Vikas C Sajjan <vikas.sajjan@xxxxxxxxxx>
> CC: Doug Anderson <dianders@xxxxxxxxxxxx>
> Signed-off-by: Felipe Balbi <balbi@xxxxxx>
> ---
>
> changes since v1:
> - better placement for #edif
> - use DEV_PM_OPS trickery (although not really necessary,
> it looks a bit nicer)
>
> drivers/usb/host/xhci-plat.c | 26 ++++++++++++++++++++++++++
> 1 file changed, 26 insertions(+)
>
> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
> index df90fe5..c9c7e13 100644
> --- a/drivers/usb/host/xhci-plat.c
> +++ b/drivers/usb/host/xhci-plat.c
> @@ -185,11 +185,37 @@ 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");
> --
> 1.8.1.rc1.5.g7e0651a
>
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