1 files changed, 39 insertions, 13 deletions

diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index fbcd34911025..9f0a6b27e47c 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -152,7 +152,7 @@ static int ohci_quirk_amd700(struct usb_hcd *hcd)
 {
 	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
 
-	if (usb_amd_find_chipset_info())
+	if (usb_amd_quirk_pll_check())
 		ohci->flags |= OHCI_QUIRK_AMD_PLL;
 
 	/* SB800 needs pre-fetch fix */
@@ -165,6 +165,25 @@ static int ohci_quirk_amd700(struct usb_hcd *hcd)
 	return 0;
 }
 
+static int ohci_quirk_loongson(struct usb_hcd *hcd)
+{
+	struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
+
+	/*
+	 * Loongson's LS7A OHCI controller (rev 0x02) has a
+	 * flaw. MMIO register with offset 0x60/64 is treated
+	 * as legacy PS2-compatible keyboard/mouse interface.
+	 * Since OHCI only use 4KB BAR resource, LS7A OHCI's
+	 * 32KB BAR is wrapped around (the 2nd 4KB BAR space
+	 * is the same as the 1st 4KB internally). So add 4KB
+	 * offset (0x1000) to the OHCI registers as a quirk.
+	 */
+	if (pdev->revision == 0x2)
+		hcd->regs += SZ_4K;	/* SZ_4K = 0x1000 */
+
+	return 0;
+}
+
 static int ohci_quirk_qemu(struct usb_hcd *hcd)
 {
 	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
@@ -225,6 +244,10 @@ static const struct pci_device_id ohci_pci_quirks[] = {
 		.driver_data = (unsigned long)ohci_quirk_amd700,
 	},
 	{
+		PCI_DEVICE(PCI_VENDOR_ID_LOONGSON, 0x7a24),
+		.driver_data = (unsigned long)ohci_quirk_loongson,
+	},
+	{
 		.vendor		= PCI_VENDOR_ID_APPLE,
 		.device		= 0x003f,
 		.subvendor	= PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
@@ -232,10 +255,6 @@ static const struct pci_device_id ohci_pci_quirks[] = {
 		.driver_data	= (unsigned long)ohci_quirk_qemu,
 	},
 
-	/* FIXME for some of the early AMD 760 southbridges, OHCI
-	 * won't work at all.  blacklist them.
-	 */
-
 	{},
 };
 
@@ -274,24 +293,27 @@ static const struct ohci_driver_overrides pci_overrides __initconst = {
 	.reset =		ohci_pci_reset,
 };
 
-static const struct pci_device_id pci_ids [] = { {
+static const struct pci_device_id pci_ids[] = { {
 	/* handle any USB OHCI controller */
 	PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0),
-	.driver_data =	(unsigned long) &ohci_pci_hc_driver,
 	}, {
 	/* The device in the ConneXT I/O hub has no class reg */
 	PCI_VDEVICE(STMICRO, PCI_DEVICE_ID_STMICRO_USB_OHCI),
-	.driver_data =	(unsigned long) &ohci_pci_hc_driver,
 	}, { /* end: all zeroes */ }
 };
 MODULE_DEVICE_TABLE (pci, pci_ids);
 
+static int ohci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
+{
+	return usb_hcd_pci_probe(dev, &ohci_pci_hc_driver);
+}
+
 /* pci driver glue; this is a "new style" PCI driver module */
 static struct pci_driver ohci_pci_driver = {
-	.name =		(char *) hcd_name,
+	.name =		hcd_name,
 	.id_table =	pci_ids,
 
-	.probe =	usb_hcd_pci_probe,
+	.probe =	ohci_pci_probe,
 	.remove =	usb_hcd_pci_remove,
 	.shutdown =	usb_hcd_pci_shutdown,
 
@@ -302,19 +324,23 @@ static struct pci_driver ohci_pci_driver = {
 #endif
 };
 
+#ifdef CONFIG_PM
+static int ohci_pci_resume(struct usb_hcd *hcd, pm_message_t msg)
+{
+	return ohci_resume(hcd, msg.event == PM_EVENT_RESTORE);
+}
+#endif
 static int __init ohci_pci_init(void)
 {
 	if (usb_disabled())
 		return -ENODEV;
 
-	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
-
 	ohci_init_driver(&ohci_pci_hc_driver, &pci_overrides);
 
 #ifdef	CONFIG_PM
 	/* Entries for the PCI suspend/resume callbacks are special */
 	ohci_pci_hc_driver.pci_suspend = ohci_suspend;
-	ohci_pci_hc_driver.pci_resume = ohci_resume;
+	ohci_pci_hc_driver.pci_resume = ohci_pci_resume;
 #endif
 
 	return pci_register_driver(&ohci_pci_driver);