2 * Bus Glue for the built-in OHCI controller of the Ralink RT3662/RT3883 SoCs
4 * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
6 * Parts of this file are based on Ralink's 2.6.21 BSP
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published
10 * by the Free Software Foundation.
13 #include <linux/platform_device.h>
14 #include <asm/mach-ralink/rt3883.h>
15 #include <asm/mach-ralink/rt3883_ohci_platform.h>
17 static int __devinit ohci_rt3883_start(struct usb_hcd *hcd)
19 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
22 ret = ohci_init(ohci);
37 static const struct hc_driver ohci_rt3883_hc_driver = {
38 .description = hcd_name,
39 .product_desc = "Ralink RT3883 built-in OHCI controller",
40 .hcd_priv_size = sizeof(struct ohci_hcd),
43 .flags = HCD_USB11 | HCD_MEMORY,
45 .start = ohci_rt3883_start,
47 .shutdown = ohci_shutdown,
49 .urb_enqueue = ohci_urb_enqueue,
50 .urb_dequeue = ohci_urb_dequeue,
51 .endpoint_disable = ohci_endpoint_disable,
56 .get_frame_number = ohci_get_frame,
61 .hub_status_data = ohci_hub_status_data,
62 .hub_control = ohci_hub_control,
63 .start_port_reset = ohci_start_port_reset,
66 static int ohci_rt3883_probe(struct platform_device *pdev)
68 struct rt3883_ohci_platform_data *pdata;
77 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
79 dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
80 dev_name(&pdev->dev));
85 hcd = usb_create_hcd(&ohci_rt3883_hc_driver,
86 &pdev->dev, dev_name(&pdev->dev));
90 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
92 dev_dbg(&pdev->dev, "no base address specified for %s\n",
93 dev_name(&pdev->dev));
97 hcd->rsrc_start = res->start;
98 hcd->rsrc_len = res->end - res->start + 1;
100 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
101 dev_dbg(&pdev->dev, "controller already in use\n");
106 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
108 dev_dbg(&pdev->dev, "error mapping memory\n");
110 goto err_release_region;
113 pdata = pdev->dev.platform_data;
114 if (pdata && pdata->start_hw)
117 ohci_hcd_init(hcd_to_ohci(hcd));
119 ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
128 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
134 static int ohci_rt3883_remove(struct platform_device *pdev)
136 struct usb_hcd *hcd = platform_get_drvdata(pdev);
137 struct rt3883_ohci_platform_data *pdata;
141 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
144 pdata = pdev->dev.platform_data;
145 if (pdata && pdata->stop_hw)
151 static struct platform_driver ohci_rt3883_driver = {
152 .probe = ohci_rt3883_probe,
153 .remove = ohci_rt3883_remove,
154 .shutdown = usb_hcd_platform_shutdown,
156 .name = "rt3883-ohci",
157 .owner = THIS_MODULE,
161 MODULE_ALIAS("platform:rt3883-ohci");