linux-kernel - [PATCH] ce4100: Add support for CE4100 EHCI IP block to EHCI driver

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Message-Id: <1290008589-3349-1-git-send-email-dirk.brandewie@gmail.com>
Date:	Wed, 17 Nov 2010 07:43:09 -0800
From:	dirk.brandewie@...il.com
To:	linux-kernel@...r.kernel.org
Cc:	dirk.brandewie@...il.com, greg@...ah.com,
	linux-usb@...r.kernel.org,
	David Brownell <dbrownell@...rs.sourceforge.net>
Subject: [PATCH] ce4100: Add support for CE4100 EHCI IP block to EHCI driver

From: Dirk Brandewie <dirk.brandewie@...il.com>

This patch adds support for the EHCI IP block present on the Intel
CE4100.

Signed-off-by: Dirk Brandewie <dirk.brandewie@...il.com>
CC: linux-usb@...r.kernel.org
CC: David Brownell <dbrownell@...rs.sourceforge.net>
---
 drivers/usb/host/ehci-pci.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index a1e8d27..56c78e9 100644
--- 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) {
-- 
1.7.2.3

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