2 * IXP4XX EHCI Host Controller Driver
4 * Author: Vladimir Barinov <vbarinov@embeddedalley.com>
6 * Based on "ehci-fsl.c" by Randy Vinson <rvinson@mvista.com>
8 * 2007 (c) MontaVista Software, Inc. This file is licensed under
9 * the terms of the GNU General Public License version 2. This program
10 * is licensed "as is" without any warranty of any kind, whether express
14 #include <linux/platform_device.h>
16 static int ixp4xx_ehci_init(struct usb_hcd *hcd)
18 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
21 ehci->big_endian_desc = 1;
22 ehci->big_endian_mmio = 1;
24 ehci->caps = hcd->regs + 0x100;
28 retval = ehci_setup(hcd);
32 ehci_port_power(ehci, 0);
37 static const struct hc_driver ixp4xx_ehci_hc_driver = {
38 .description = hcd_name,
39 .product_desc = "IXP4XX EHCI Host Controller",
40 .hcd_priv_size = sizeof(struct ehci_hcd),
42 .flags = HCD_MEMORY | HCD_USB2,
43 .reset = ixp4xx_ehci_init,
46 .shutdown = ehci_shutdown,
47 .urb_enqueue = ehci_urb_enqueue,
48 .urb_dequeue = ehci_urb_dequeue,
49 .endpoint_disable = ehci_endpoint_disable,
50 .endpoint_reset = ehci_endpoint_reset,
51 .get_frame_number = ehci_get_frame,
52 .hub_status_data = ehci_hub_status_data,
53 .hub_control = ehci_hub_control,
54 #if defined(CONFIG_PM)
55 .bus_suspend = ehci_bus_suspend,
56 .bus_resume = ehci_bus_resume,
58 .relinquish_port = ehci_relinquish_port,
59 .port_handed_over = ehci_port_handed_over,
61 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
64 static int ixp4xx_ehci_probe(struct platform_device *pdev)
67 const struct hc_driver *driver = &ixp4xx_ehci_hc_driver;
75 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
78 "Found HC with no IRQ. Check %s setup!\n",
79 dev_name(&pdev->dev));
84 hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
90 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
93 "Found HC with no register addr. Check %s setup!\n",
94 dev_name(&pdev->dev));
96 goto fail_request_resource;
98 hcd->rsrc_start = res->start;
99 hcd->rsrc_len = resource_size(res);
101 hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
102 if (hcd->regs == NULL) {
103 dev_dbg(&pdev->dev, "error mapping memory\n");
105 goto fail_request_resource;
108 retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
110 goto fail_request_resource;
114 fail_request_resource:
117 dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
121 static int ixp4xx_ehci_remove(struct platform_device *pdev)
123 struct usb_hcd *hcd = platform_get_drvdata(pdev);
131 MODULE_ALIAS("platform:ixp4xx-ehci");
133 static struct platform_driver ixp4xx_ehci_driver = {
134 .probe = ixp4xx_ehci_probe,
135 .remove = ixp4xx_ehci_remove,
137 .name = "ixp4xx-ehci",