quick way to get the xhci roothub and thus all the ports
belonging to a certain hcd
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci-hub.c | 9 +++++++++
drivers/usb/host/xhci.h | 2 ++
2 files changed, 11 insertions(+)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 32cd52c..b6fd26f 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -554,6 +554,15 @@ static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array)
return max_ports;
}
+struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd)
+{
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+
+ if (hcd->speed >= HCD_USB3)
+ return &xhci->usb3_rhub;
+ return &xhci->usb2_rhub;
+}
+
static __le32 __iomem *xhci_get_port_io_addr(struct usb_hcd *hcd, int index)
{
__le32 __iomem **port_array;
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 38aa8a6..cdf8e1a 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -2110,6 +2110,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,
char *buf, u16 wLength);
int xhci_hub_status_data(struct usb_hcd *hcd, char *buf);
int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1);
+struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd);
+
void xhci_hc_died(struct xhci_hcd *xhci);
#ifdef CONFIG_PM
--
2.7.4
--
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