diff options
Diffstat (limited to 'drivers/usb/host/xhci-hub.c')
| -rw-r--r-- | drivers/usb/host/xhci-hub.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 4ba910eadd3f..d27c30ac17fd 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -763,9 +763,12 @@ static int xhci_exit_test_mode(struct xhci_hcd *xhci) * * A USB3 device must be connected to the port to detect the tunnel. * - * Return: true if USB3 connection is tunneled over USB4 + * Return: link tunnel mode enum, USB_LINK_UNKNOWN if host is incapable of + * detecting USB3 over USB4 tunnels. USB_LINK_NATIVE or USB_LINK_TUNNELED + * otherwise. */ -bool xhci_port_is_tunneled(struct xhci_hcd *xhci, struct xhci_port *port) +enum usb_link_tunnel_mode xhci_port_is_tunneled(struct xhci_hcd *xhci, + struct xhci_port *port) { void __iomem *base; u32 offset; @@ -777,10 +780,12 @@ bool xhci_port_is_tunneled(struct xhci_hcd *xhci, struct xhci_port *port) offset = XHCI_INTEL_SPR_ESS_PORT_OFFSET + port->hcd_portnum * 0x20; if (readl(base + offset) & XHCI_INTEL_SPR_TUNEN) - return true; + return USB_LINK_TUNNELED; + else + return USB_LINK_NATIVE; } - return false; + return USB_LINK_UNKNOWN; } void xhci_set_link_state(struct xhci_hcd *xhci, struct xhci_port *port, |