diff options
Diffstat (limited to 'drivers/usb/host/ohci-ath79.c')
-rw-r--r-- | drivers/usb/host/ohci-ath79.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-ath79.c b/drivers/usb/host/ohci-ath79.c new file mode 100644 index 000000000000..ffea3e7cb0a8 --- /dev/null +++ b/drivers/usb/host/ohci-ath79.c | |||
@@ -0,0 +1,151 @@ | |||
1 | /* | ||
2 | * OHCI HCD (Host Controller Driver) for USB. | ||
3 | * | ||
4 | * Bus Glue for Atheros AR71XX/AR724X built-in OHCI controller. | ||
5 | * | ||
6 | * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> | ||
7 | * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> | ||
8 | * | ||
9 | * Parts of this file are based on Atheros' 2.6.15 BSP | ||
10 | * Copyright (C) 2007 Atheros Communications, Inc. | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or modify it | ||
13 | * under the terms of the GNU General Public License version 2 as published | ||
14 | * by the Free Software Foundation. | ||
15 | */ | ||
16 | |||
17 | #include <linux/platform_device.h> | ||
18 | |||
19 | static int __devinit ohci_ath79_start(struct usb_hcd *hcd) | ||
20 | { | ||
21 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); | ||
22 | int ret; | ||
23 | |||
24 | ret = ohci_init(ohci); | ||
25 | if (ret < 0) | ||
26 | return ret; | ||
27 | |||
28 | ret = ohci_run(ohci); | ||
29 | if (ret < 0) | ||
30 | goto err; | ||
31 | |||
32 | return 0; | ||
33 | |||
34 | err: | ||
35 | ohci_stop(hcd); | ||
36 | return ret; | ||
37 | } | ||
38 | |||
39 | static const struct hc_driver ohci_ath79_hc_driver = { | ||
40 | .description = hcd_name, | ||
41 | .product_desc = "Atheros built-in OHCI controller", | ||
42 | .hcd_priv_size = sizeof(struct ohci_hcd), | ||
43 | |||
44 | .irq = ohci_irq, | ||
45 | .flags = HCD_USB11 | HCD_MEMORY, | ||
46 | |||
47 | .start = ohci_ath79_start, | ||
48 | .stop = ohci_stop, | ||
49 | .shutdown = ohci_shutdown, | ||
50 | |||
51 | .urb_enqueue = ohci_urb_enqueue, | ||
52 | .urb_dequeue = ohci_urb_dequeue, | ||
53 | .endpoint_disable = ohci_endpoint_disable, | ||
54 | |||
55 | /* | ||
56 | * scheduling support | ||
57 | */ | ||
58 | .get_frame_number = ohci_get_frame, | ||
59 | |||
60 | /* | ||
61 | * root hub support | ||
62 | */ | ||
63 | .hub_status_data = ohci_hub_status_data, | ||
64 | .hub_control = ohci_hub_control, | ||
65 | .start_port_reset = ohci_start_port_reset, | ||
66 | }; | ||
67 | |||
68 | static int ohci_ath79_probe(struct platform_device *pdev) | ||
69 | { | ||
70 | struct usb_hcd *hcd; | ||
71 | struct resource *res; | ||
72 | int irq; | ||
73 | int ret; | ||
74 | |||
75 | if (usb_disabled()) | ||
76 | return -ENODEV; | ||
77 | |||
78 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | ||
79 | if (!res) { | ||
80 | dev_dbg(&pdev->dev, "no IRQ specified\n"); | ||
81 | return -ENODEV; | ||
82 | } | ||
83 | irq = res->start; | ||
84 | |||
85 | hcd = usb_create_hcd(&ohci_ath79_hc_driver, &pdev->dev, | ||
86 | dev_name(&pdev->dev)); | ||
87 | if (!hcd) | ||
88 | return -ENOMEM; | ||
89 | |||
90 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||
91 | if (!res) { | ||
92 | dev_dbg(&pdev->dev, "no base address specified\n"); | ||
93 | ret = -ENODEV; | ||
94 | goto err_put_hcd; | ||
95 | } | ||
96 | hcd->rsrc_start = res->start; | ||
97 | hcd->rsrc_len = res->end - res->start + 1; | ||
98 | |||
99 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { | ||
100 | dev_dbg(&pdev->dev, "controller already in use\n"); | ||
101 | ret = -EBUSY; | ||
102 | goto err_put_hcd; | ||
103 | } | ||
104 | |||
105 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); | ||
106 | if (!hcd->regs) { | ||
107 | dev_dbg(&pdev->dev, "error mapping memory\n"); | ||
108 | ret = -EFAULT; | ||
109 | goto err_release_region; | ||
110 | } | ||
111 | |||
112 | ohci_hcd_init(hcd_to_ohci(hcd)); | ||
113 | |||
114 | ret = usb_add_hcd(hcd, irq, IRQF_DISABLED); | ||
115 | if (ret) | ||
116 | goto err_stop_hcd; | ||
117 | |||
118 | return 0; | ||
119 | |||
120 | err_stop_hcd: | ||
121 | iounmap(hcd->regs); | ||
122 | err_release_region: | ||
123 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | ||
124 | err_put_hcd: | ||
125 | usb_put_hcd(hcd); | ||
126 | return ret; | ||
127 | } | ||
128 | |||
129 | static int ohci_ath79_remove(struct platform_device *pdev) | ||
130 | { | ||
131 | struct usb_hcd *hcd = platform_get_drvdata(pdev); | ||
132 | |||
133 | usb_remove_hcd(hcd); | ||
134 | iounmap(hcd->regs); | ||
135 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | ||
136 | usb_put_hcd(hcd); | ||
137 | |||
138 | return 0; | ||
139 | } | ||
140 | |||
141 | static struct platform_driver ohci_hcd_ath79_driver = { | ||
142 | .probe = ohci_ath79_probe, | ||
143 | .remove = ohci_ath79_remove, | ||
144 | .shutdown = usb_hcd_platform_shutdown, | ||
145 | .driver = { | ||
146 | .name = "ath79-ohci", | ||
147 | .owner = THIS_MODULE, | ||
148 | }, | ||
149 | }; | ||
150 | |||
151 | MODULE_ALIAS(PLATFORM_MODULE_PREFIX "ath79-ohci"); | ||