2 * Bus Glue for Atheros AR71xx built-in EHCI controller.
4 * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * Parts of this file are based on Atheros' 2.6.15 BSP
8 * Copyright (C) 2007 Atheros Communications, Inc.
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published
12 * by the Free Software Foundation.
15 #include <linux/platform_device.h>
16 #include <linux/delay.h>
18 #include <asm/mach-ar71xx/platform.h>
20 extern int usb_disabled(void);
22 static int ehci_ar71xx_init(struct usb_hcd *hcd)
24 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
27 ehci->caps = hcd->regs;
28 ehci->regs = hcd->regs +
29 HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
30 ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
33 ehci->has_synopsys_hc_bug = 1;
41 ehci_port_power(ehci, 0);
46 static int ehci_ar91xx_init(struct usb_hcd *hcd)
48 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
51 ehci->caps = hcd->regs + 0x100;
52 ehci->regs = hcd->regs + 0x100 +
53 HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
54 ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
65 ehci_port_power(ehci, 0);
70 static int ehci_ar71xx_probe(const struct hc_driver *driver,
71 struct usb_hcd **hcd_out,
72 struct platform_device *pdev)
79 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
81 dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
82 dev_name(&pdev->dev));
87 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
89 dev_dbg(&pdev->dev, "no base address specified for %s\n",
90 dev_name(&pdev->dev));
94 hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
98 hcd->rsrc_start = res->start;
99 hcd->rsrc_len = res->end - res->start + 1;
101 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
102 dev_dbg(&pdev->dev, "controller already in use\n");
107 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
109 dev_dbg(&pdev->dev, "error mapping memory\n");
111 goto err_release_region;
114 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
124 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
130 static void ehci_ar71xx_remove(struct usb_hcd *hcd,
131 struct platform_device *pdev)
135 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
139 static const struct hc_driver ehci_ar71xx_hc_driver = {
140 .description = hcd_name,
141 .product_desc = "Atheros AR71xx built-in EHCI controller",
142 .hcd_priv_size = sizeof(struct ehci_hcd),
145 .flags = HCD_MEMORY | HCD_USB2,
147 .reset = ehci_ar71xx_init,
150 .shutdown = ehci_shutdown,
152 .urb_enqueue = ehci_urb_enqueue,
153 .urb_dequeue = ehci_urb_dequeue,
154 .endpoint_disable = ehci_endpoint_disable,
155 .endpoint_reset = ehci_endpoint_reset,
157 .get_frame_number = ehci_get_frame,
159 .hub_status_data = ehci_hub_status_data,
160 .hub_control = ehci_hub_control,
162 .hub_suspend = ehci_hub_suspend,
163 .hub_resume = ehci_hub_resume,
165 .relinquish_port = ehci_relinquish_port,
166 .port_handed_over = ehci_port_handed_over,
168 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
171 static const struct hc_driver ehci_ar91xx_hc_driver = {
172 .description = hcd_name,
173 .product_desc = "Atheros AR91xx built-in EHCI controller",
174 .hcd_priv_size = sizeof(struct ehci_hcd),
176 .flags = HCD_MEMORY | HCD_USB2,
178 .reset = ehci_ar91xx_init,
181 .shutdown = ehci_shutdown,
183 .urb_enqueue = ehci_urb_enqueue,
184 .urb_dequeue = ehci_urb_dequeue,
185 .endpoint_disable = ehci_endpoint_disable,
186 .endpoint_reset = ehci_endpoint_reset,
188 .get_frame_number = ehci_get_frame,
190 .hub_status_data = ehci_hub_status_data,
191 .hub_control = ehci_hub_control,
193 .hub_suspend = ehci_hub_suspend,
194 .hub_resume = ehci_hub_resume,
196 .relinquish_port = ehci_relinquish_port,
197 .port_handed_over = ehci_port_handed_over,
199 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
202 static int ehci_ar71xx_driver_probe(struct platform_device *pdev)
204 struct ar71xx_ehci_platform_data *pdata;
205 struct usb_hcd *hcd = NULL;
211 pdata = pdev->dev.platform_data;
213 dev_err(&pdev->dev, "no platform data specified for %s\n",
214 dev_name(&pdev->dev));
218 if (pdata->is_ar91xx)
219 ret = ehci_ar71xx_probe(&ehci_ar91xx_hc_driver, &hcd, pdev);
221 ret = ehci_ar71xx_probe(&ehci_ar71xx_hc_driver, &hcd, pdev);
226 static int ehci_ar71xx_driver_remove(struct platform_device *pdev)
228 struct usb_hcd *hcd = platform_get_drvdata(pdev);
230 ehci_ar71xx_remove(hcd, pdev);
234 MODULE_ALIAS("platform:ar71xx-ehci");
236 static struct platform_driver ehci_ar71xx_driver = {
237 .probe = ehci_ar71xx_driver_probe,
238 .remove = ehci_ar71xx_driver_remove,
240 .name = "ar71xx-ehci",