usb: Add support for root hub port status CAS

[firefly-linux-kernel-4.4.55.git] / drivers / usb / host / xhci.h

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index de3d6e3e57be4b12e840f5a168b439b151fe84fc..55c0785810c99fb5286e29d39cd4d7ff2b98addb 100644 (file)
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -341,7 +341,11 @@ struct xhci_op_regs {
 #define PORT_PLC       (1 << 22)
 /* port configure error change - port failed to configure its link partner */
 #define PORT_CEC       (1 << 23)
-/* bit 24 reserved */
+/* Cold Attach Status - xHC can set this bit to report device attached during
+ * Sx state. Warm port reset should be perfomed to clear this bit and move port
+ * to connected state.
+ */
+#define PORT_CAS       (1 << 24)
 /* wake on connect (enable) */
 #define PORT_WKCONN_E  (1 << 25)
 /* wake on disconnect (enable) */