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: Dirk Brandewie <dirk.brandewie@gmail.com>
CC: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index a1e8d27..56c78e9 100644 (file)
--- a/drivers/usb/host/ehci-pci.c
+++ b/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) {