USB: ce4100: Add support for CE4100 EHCI IP block to EHCI driver

This patch adds support for the EHCI IP block present on the Intel
CE4100.
Signed-off-by: NDirk Brandewie <dirk.brandewie@gmail.com>
CC: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/host/ehci-pci.c

@@ -22,6 +22,9 @@
 #error "This file is PCI bus glue.  CONFIG_PCI must be defined."
 #endif
 
+/* defined here to avoid adding to pci_ids.h for single instance use */
+#define PCI_DEVICE_ID_INTEL_CE4100_USB	0x2e70
+
 /*-------------------------------------------------------------------------*/
 
 /* called after powerup, by probe or system-pm "wakeup" */
@@ -124,6 +127,10 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
 			ehci_info(ehci, "disable lpm for langwell/penwell\n");
 			ehci->has_lpm = 0;
 		}
+		if (pdev->device == PCI_DEVICE_ID_INTEL_CE4100_USB) {
+			hcd->has_tt = 1;
+			tdi_reset(ehci);
+		}
 		break;
 	case PCI_VENDOR_ID_TDI:
 		if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) {