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fa3364b5 HM |
1 | /* |
2 | * Generic platform ohci driver | |
3 | * | |
4 | * Copyright 2007 Michael Buesch <m@bues.ch> | |
5 | * Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de> | |
6 | * | |
7 | * Derived from the OCHI-SSB driver | |
8 | * Derived from the OHCI-PCI driver | |
9 | * Copyright 1999 Roman Weissgaerber | |
10 | * Copyright 2000-2002 David Brownell | |
11 | * Copyright 1999 Linus Torvalds | |
12 | * Copyright 1999 Gregory P. Smith | |
13 | * | |
14 | * Licensed under the GNU/GPL. See COPYING for details. | |
15 | */ | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/usb/ohci_pdriver.h> | |
18 | ||
19 | static int ohci_platform_reset(struct usb_hcd *hcd) | |
20 | { | |
21 | struct platform_device *pdev = to_platform_device(hcd->self.controller); | |
22 | struct usb_ohci_pdata *pdata = pdev->dev.platform_data; | |
23 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); | |
24 | int err; | |
25 | ||
26 | if (pdata->big_endian_desc) | |
27 | ohci->flags |= OHCI_QUIRK_BE_DESC; | |
28 | if (pdata->big_endian_mmio) | |
29 | ohci->flags |= OHCI_QUIRK_BE_MMIO; | |
30 | if (pdata->no_big_frame_no) | |
31 | ohci->flags |= OHCI_QUIRK_FRAME_NO; | |
32 | ||
33 | ohci_hcd_init(ohci); | |
34 | err = ohci_init(ohci); | |
35 | ||
36 | return err; | |
37 | } | |
38 | ||
39 | static int ohci_platform_start(struct usb_hcd *hcd) | |
40 | { | |
41 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); | |
42 | int err; | |
43 | ||
44 | err = ohci_run(ohci); | |
45 | if (err < 0) { | |
46 | ohci_err(ohci, "can't start\n"); | |
47 | ohci_stop(hcd); | |
48 | } | |
49 | ||
50 | return err; | |
51 | } | |
52 | ||
53 | static const struct hc_driver ohci_platform_hc_driver = { | |
54 | .description = hcd_name, | |
55 | .product_desc = "Generic Platform OHCI Controller", | |
56 | .hcd_priv_size = sizeof(struct ohci_hcd), | |
57 | ||
58 | .irq = ohci_irq, | |
59 | .flags = HCD_MEMORY | HCD_USB11, | |
60 | ||
61 | .reset = ohci_platform_reset, | |
62 | .start = ohci_platform_start, | |
63 | .stop = ohci_stop, | |
64 | .shutdown = ohci_shutdown, | |
65 | ||
66 | .urb_enqueue = ohci_urb_enqueue, | |
67 | .urb_dequeue = ohci_urb_dequeue, | |
68 | .endpoint_disable = ohci_endpoint_disable, | |
69 | ||
70 | .get_frame_number = ohci_get_frame, | |
71 | ||
72 | .hub_status_data = ohci_hub_status_data, | |
73 | .hub_control = ohci_hub_control, | |
74 | #ifdef CONFIG_PM | |
75 | .bus_suspend = ohci_bus_suspend, | |
76 | .bus_resume = ohci_bus_resume, | |
77 | #endif | |
78 | ||
79 | .start_port_reset = ohci_start_port_reset, | |
80 | }; | |
81 | ||
82 | static int __devinit ohci_platform_probe(struct platform_device *dev) | |
83 | { | |
84 | struct usb_hcd *hcd; | |
85 | struct resource *res_mem; | |
b6dd245c | 86 | struct usb_ohci_pdata *pdata = dev->dev.platform_data; |
fa3364b5 HM |
87 | int irq; |
88 | int err = -ENOMEM; | |
89 | ||
b6dd245c KM |
90 | if (!pdata) { |
91 | WARN_ON(1); | |
92 | return -ENODEV; | |
93 | } | |
fa3364b5 HM |
94 | |
95 | if (usb_disabled()) | |
96 | return -ENODEV; | |
97 | ||
98 | irq = platform_get_irq(dev, 0); | |
99 | if (irq < 0) { | |
1c1301dd | 100 | pr_err("no irq provided"); |
fa3364b5 HM |
101 | return irq; |
102 | } | |
103 | ||
104 | res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0); | |
105 | if (!res_mem) { | |
1c1301dd | 106 | pr_err("no memory recourse provided"); |
fa3364b5 HM |
107 | return -ENXIO; |
108 | } | |
109 | ||
e4d37aeb KM |
110 | if (pdata->power_on) { |
111 | err = pdata->power_on(dev); | |
112 | if (err < 0) | |
113 | return err; | |
114 | } | |
115 | ||
fa3364b5 HM |
116 | hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev, |
117 | dev_name(&dev->dev)); | |
e4d37aeb KM |
118 | if (!hcd) { |
119 | err = -ENOMEM; | |
120 | goto err_power; | |
121 | } | |
fa3364b5 HM |
122 | |
123 | hcd->rsrc_start = res_mem->start; | |
124 | hcd->rsrc_len = resource_size(res_mem); | |
125 | ||
126 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { | |
127 | pr_err("controller already in use"); | |
128 | err = -EBUSY; | |
129 | goto err_put_hcd; | |
130 | } | |
131 | ||
132 | hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len); | |
aece389e JL |
133 | if (!hcd->regs) { |
134 | err = -ENOMEM; | |
fa3364b5 | 135 | goto err_release_region; |
aece389e | 136 | } |
fa3364b5 HM |
137 | err = usb_add_hcd(hcd, irq, IRQF_SHARED); |
138 | if (err) | |
139 | goto err_iounmap; | |
140 | ||
141 | platform_set_drvdata(dev, hcd); | |
142 | ||
143 | return err; | |
144 | ||
145 | err_iounmap: | |
146 | iounmap(hcd->regs); | |
147 | err_release_region: | |
148 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
149 | err_put_hcd: | |
150 | usb_put_hcd(hcd); | |
e4d37aeb KM |
151 | err_power: |
152 | if (pdata->power_off) | |
153 | pdata->power_off(dev); | |
154 | ||
fa3364b5 HM |
155 | return err; |
156 | } | |
157 | ||
158 | static int __devexit ohci_platform_remove(struct platform_device *dev) | |
159 | { | |
160 | struct usb_hcd *hcd = platform_get_drvdata(dev); | |
e4d37aeb | 161 | struct usb_ohci_pdata *pdata = dev->dev.platform_data; |
fa3364b5 HM |
162 | |
163 | usb_remove_hcd(hcd); | |
164 | iounmap(hcd->regs); | |
165 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
166 | usb_put_hcd(hcd); | |
167 | platform_set_drvdata(dev, NULL); | |
168 | ||
e4d37aeb KM |
169 | if (pdata->power_off) |
170 | pdata->power_off(dev); | |
171 | ||
fa3364b5 HM |
172 | return 0; |
173 | } | |
174 | ||
175 | #ifdef CONFIG_PM | |
176 | ||
177 | static int ohci_platform_suspend(struct device *dev) | |
178 | { | |
e4d37aeb KM |
179 | struct usb_ohci_pdata *pdata = dev->platform_data; |
180 | struct platform_device *pdev = | |
181 | container_of(dev, struct platform_device, dev); | |
182 | ||
183 | if (pdata->power_suspend) | |
184 | pdata->power_suspend(pdev); | |
185 | ||
fa3364b5 HM |
186 | return 0; |
187 | } | |
188 | ||
189 | static int ohci_platform_resume(struct device *dev) | |
190 | { | |
191 | struct usb_hcd *hcd = dev_get_drvdata(dev); | |
e4d37aeb KM |
192 | struct usb_ohci_pdata *pdata = dev->platform_data; |
193 | struct platform_device *pdev = | |
194 | container_of(dev, struct platform_device, dev); | |
195 | ||
196 | if (pdata->power_on) { | |
197 | int err = pdata->power_on(pdev); | |
198 | if (err < 0) | |
199 | return err; | |
200 | } | |
fa3364b5 HM |
201 | |
202 | ohci_finish_controller_resume(hcd); | |
203 | return 0; | |
204 | } | |
205 | ||
206 | #else /* !CONFIG_PM */ | |
207 | #define ohci_platform_suspend NULL | |
208 | #define ohci_platform_resume NULL | |
209 | #endif /* CONFIG_PM */ | |
210 | ||
211 | static const struct platform_device_id ohci_platform_table[] = { | |
212 | { "ohci-platform", 0 }, | |
213 | { } | |
214 | }; | |
215 | MODULE_DEVICE_TABLE(platform, ohci_platform_table); | |
216 | ||
217 | static const struct dev_pm_ops ohci_platform_pm_ops = { | |
218 | .suspend = ohci_platform_suspend, | |
219 | .resume = ohci_platform_resume, | |
220 | }; | |
221 | ||
222 | static struct platform_driver ohci_platform_driver = { | |
223 | .id_table = ohci_platform_table, | |
224 | .probe = ohci_platform_probe, | |
225 | .remove = __devexit_p(ohci_platform_remove), | |
226 | .shutdown = usb_hcd_platform_shutdown, | |
227 | .driver = { | |
228 | .owner = THIS_MODULE, | |
229 | .name = "ohci-platform", | |
230 | .pm = &ohci_platform_pm_ops, | |
231 | } | |
232 | }; |