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xhci-plat: Add hibernation support to xhci platform

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Add hibernation support to xhci platform by adding
the proper PM ops freeze and restore.
Also set the hibernated argument to xhci_resume which
will trigger the reset-resume of the connected
root-hubs and the devices.

Change-Id: Ib536bb2485928326f34bfc3422b672cc62309efe
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>
Signed-off-by: Ajay Agarwal <ajaya@codeaurora.org>
This commit is contained in:
Sriharsha Allenki 2018-05-17 11:34:11 +05:30 • committed by Ajay Agarwal
parent 6a6d52ab38
commit dd4a9bfbf0
1 changed files with 38 additions and 1 deletions
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39
drivers/usb/host/xhci-plat.c
View file

@ -370,6 +370,39 @@ static int xhci_plat_runtime_idle(struct device *dev)
return -EBUSY;
}
static int xhci_plat_pm_freeze(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
if (!xhci)
return 0;
dev_dbg(dev, "xhci-plat freeze\n");
return xhci_suspend(xhci, false);
}
static int xhci_plat_pm_restore(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
int ret;
if (!xhci)
return 0;
dev_dbg(dev, "xhci-plat restore\n");
ret = xhci_resume(xhci, true);
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_mark_last_busy(dev);
return ret;
}
static int xhci_plat_runtime_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
@ -401,7 +434,11 @@ static int xhci_plat_runtime_resume(struct device *dev)
}
static const struct dev_pm_ops xhci_plat_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume)
.suspend = xhci_plat_suspend,
.resume = xhci_plat_resume,
.freeze = xhci_plat_pm_freeze,
.restore = xhci_plat_pm_restore,
.thaw = xhci_plat_pm_restore,
SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend, xhci_plat_runtime_resume,
xhci_plat_runtime_idle)
};