During suspend check if any wakeup capable devices are connected to the
controller (directly or through hubs), and set the wakeup capable property
for xhci plat device.
Signed-off-by: Sandeep Maheswaram <quic_c_sanm@xxxxxxxxxxx>
---
drivers/usb/host/xhci-plat.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index c1edcc9..7ab272b 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -431,6 +431,14 @@ static int xhci_plat_remove(struct platform_device *dev)
return 0;
}
+static void xhci_dwc3_suspend_quirk(struct usb_hcd *hcd, struct device *dev)
+{
+ if (usb_wakeup_enabled_descendants(hcd->self.root_hub))
+ device_set_wakeup_capable(dev, true);
+ else
+ device_set_wakeup_capable(dev, false);
+}
+
static int __maybe_unused xhci_plat_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
@@ -440,6 +448,10 @@ static int __maybe_unused xhci_plat_suspend(struct device *dev)
ret = xhci_priv_suspend_quirk(hcd);
if (ret)
return ret;
+
+ if (of_device_is_compatible(dev->parent->of_node, "snps,dwc3"))
+ xhci_dwc3_suspend_quirk(hcd, dev);
+
/*
* xhci_suspend() needs `do_wakeup` to know whether host is allowed
* to do wakeup during suspend.
--
2.7.4
