2 * Bus Glue for Atheros AR71xx built-in EHCI controller.
4 * Copyright (C) 2008 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 extern int usb_disabled(void);
20 static void ehci_ar71xx_setup(void)
27 static int ehci_ar71xx_probe(const struct hc_driver
*driver
,
28 struct usb_hcd
**hcd_out
,
29 struct platform_device
*pdev
)
32 struct ehci_hcd
*ehci
;
37 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, 0);
39 dev_dbg(&pdev
->dev
, "no IRQ specified for %s\n",
45 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
47 dev_dbg(&pdev
->dev
, "no base address specified for %s\n",
52 hcd
= usb_create_hcd(driver
, &pdev
->dev
, pdev
->dev
.bus_id
);
56 hcd
->rsrc_start
= res
->start
;
57 hcd
->rsrc_len
= res
->end
- res
->start
+ 1;
59 if (!request_mem_region(hcd
->rsrc_start
, hcd
->rsrc_len
, hcd_name
)) {
60 dev_dbg(&pdev
->dev
, "controller already in use\n");
65 hcd
->regs
= ioremap(hcd
->rsrc_start
, hcd
->rsrc_len
);
67 dev_dbg(&pdev
->dev
, "error mapping memory\n");
69 goto err_release_region
;
72 ehci
= hcd_to_ehci(hcd
);
73 ehci
->caps
= hcd
->regs
;
74 ehci
->regs
= hcd
->regs
+
75 HC_LENGTH(ehci_readl(ehci
, &ehci
->caps
->hc_capbase
));
76 ehci
->hcs_params
= ehci_readl(ehci
, &ehci
->caps
->hcs_params
);
80 ret
= usb_add_hcd(hcd
, irq
, IRQF_DISABLED
| IRQF_SHARED
);
90 release_mem_region(hcd
->rsrc_start
, hcd
->rsrc_len
);
96 static void ehci_ar71xx_remove(struct usb_hcd
*hcd
,
97 struct platform_device
*pdev
)
101 release_mem_region(hcd
->rsrc_start
, hcd
->rsrc_len
);
105 static const struct hc_driver ehci_ar71xx_hc_driver
= {
106 .description
= hcd_name
,
107 .product_desc
= "Atheros AR71xx built-in EHCI controller",
108 .hcd_priv_size
= sizeof(struct ehci_hcd
),
111 * generic hardware linkage
114 .flags
= HCD_MEMORY
| HCD_USB2
,
117 * basic lifecycle operations
122 .shutdown
= ehci_shutdown
,
125 * managing i/o requests and associated device resources
127 .urb_enqueue
= ehci_urb_enqueue
,
128 .urb_dequeue
= ehci_urb_dequeue
,
129 .endpoint_disable
= ehci_endpoint_disable
,
134 .get_frame_number
= ehci_get_frame
,
139 .hub_status_data
= ehci_hub_status_data
,
140 .hub_control
= ehci_hub_control
,
142 .hub_suspend
= ehci_hub_suspend
,
143 .hub_resume
= ehci_hub_resume
,
147 static int ehci_ar71xx_driver_probe(struct platform_device
*pdev
)
149 struct usb_hcd
*hcd
= NULL
;
154 return ehci_ar71xx_probe(&ehci_ar71xx_hc_driver
, &hcd
, pdev
);
157 static int ehci_ar71xx_driver_remove(struct platform_device
*pdev
)
159 struct usb_hcd
*hcd
= platform_get_drvdata(pdev
);
161 ehci_ar71xx_remove(hcd
, pdev
);
165 MODULE_ALIAS("platform:ar71xx-ehci");
167 static struct platform_driver ehci_ar71xx_driver
= {
168 .probe
= ehci_ar71xx_driver_probe
,
169 .remove
= ehci_ar71xx_driver_remove
,
171 .name
= "ar71xx-ehci",