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21#include <linux/platform_device.h>
22#include <linux/usb/ehci_pdriver.h>
23
24static int ehci_platform_reset(struct usb_hcd *hcd)
25{
26 struct platform_device *pdev = to_platform_device(hcd->self.controller);
27 struct usb_ehci_pdata *pdata = pdev->dev.platform_data;
28 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
29 int retval;
30
31 hcd->has_tt = pdata->has_tt;
32 ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
33 ehci->big_endian_desc = pdata->big_endian_desc;
34 ehci->big_endian_mmio = pdata->big_endian_mmio;
35
36 ehci->caps = hcd->regs + pdata->caps_offset;
37 retval = ehci_setup(hcd);
38 if (retval)
39 return retval;
40
41 if (pdata->port_power_on)
42 ehci_port_power(ehci, 1);
43 if (pdata->port_power_off)
44 ehci_port_power(ehci, 0);
45
46 return 0;
47}
48
49static const struct hc_driver ehci_platform_hc_driver = {
50 .description = hcd_name,
51 .product_desc = "Generic Platform EHCI Controller",
52 .hcd_priv_size = sizeof(struct ehci_hcd),
53
54 .irq = ehci_irq,
55 .flags = HCD_MEMORY | HCD_USB2,
56
57 .reset = ehci_platform_reset,
58 .start = ehci_run,
59 .stop = ehci_stop,
60 .shutdown = ehci_shutdown,
61
62 .urb_enqueue = ehci_urb_enqueue,
63 .urb_dequeue = ehci_urb_dequeue,
64 .endpoint_disable = ehci_endpoint_disable,
65 .endpoint_reset = ehci_endpoint_reset,
66
67 .get_frame_number = ehci_get_frame,
68
69 .hub_status_data = ehci_hub_status_data,
70 .hub_control = ehci_hub_control,
71#if defined(CONFIG_PM)
72 .bus_suspend = ehci_bus_suspend,
73 .bus_resume = ehci_bus_resume,
74#endif
75 .relinquish_port = ehci_relinquish_port,
76 .port_handed_over = ehci_port_handed_over,
77
78 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
79};
80
81static int __devinit ehci_platform_probe(struct platform_device *dev)
82{
83 struct usb_hcd *hcd;
84 struct resource *res_mem;
85 int irq;
86 int err = -ENOMEM;
87
88 BUG_ON(!dev->dev.platform_data);
89
90 if (usb_disabled())
91 return -ENODEV;
92
93 irq = platform_get_irq(dev, 0);
94 if (irq < 0) {
95 pr_err("no irq provided");
96 return irq;
97 }
98 res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
99 if (!res_mem) {
100 pr_err("no memory recourse provided");
101 return -ENXIO;
102 }
103
104 hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
105 dev_name(&dev->dev));
106 if (!hcd)
107 return -ENOMEM;
108
109 hcd->rsrc_start = res_mem->start;
110 hcd->rsrc_len = resource_size(res_mem);
111
112 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
113 pr_err("controller already in use");
114 err = -EBUSY;
115 goto err_put_hcd;
116 }
117
118 hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
119 if (!hcd->regs)
120 goto err_release_region;
121 err = usb_add_hcd(hcd, irq, IRQF_SHARED);
122 if (err)
123 goto err_iounmap;
124
125 platform_set_drvdata(dev, hcd);
126
127 return err;
128
129err_iounmap:
130 iounmap(hcd->regs);
131err_release_region:
132 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
133err_put_hcd:
134 usb_put_hcd(hcd);
135 return err;
136}
137
138static int __devexit ehci_platform_remove(struct platform_device *dev)
139{
140 struct usb_hcd *hcd = platform_get_drvdata(dev);
141
142 usb_remove_hcd(hcd);
143 iounmap(hcd->regs);
144 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
145 usb_put_hcd(hcd);
146 platform_set_drvdata(dev, NULL);
147
148 return 0;
149}
150
151#ifdef CONFIG_PM
152
153static int ehci_platform_suspend(struct device *dev)
154{
155 struct usb_hcd *hcd = dev_get_drvdata(dev);
156 bool do_wakeup = device_may_wakeup(dev);
157
158 return ehci_suspend(hcd, do_wakeup);
159}
160
161static int ehci_platform_resume(struct device *dev)
162{
163 struct usb_hcd *hcd = dev_get_drvdata(dev);
164
165 ehci_resume(hcd, false);
166 return 0;
167}
168
169#else
170#define ehci_platform_suspend NULL
171#define ehci_platform_resume NULL
172#endif
173
174static const struct platform_device_id ehci_platform_table[] = {
175 { "ehci-platform", 0 },
176 { }
177};
178MODULE_DEVICE_TABLE(platform, ehci_platform_table);
179
180static const struct dev_pm_ops ehci_platform_pm_ops = {
181 .suspend = ehci_platform_suspend,
182 .resume = ehci_platform_resume,
183};
184
185static struct platform_driver ehci_platform_driver = {
186 .id_table = ehci_platform_table,
187 .probe = ehci_platform_probe,
188 .remove = __devexit_p(ehci_platform_remove),
189 .shutdown = usb_hcd_platform_shutdown,
190 .driver = {
191 .owner = THIS_MODULE,
192 .name = "ehci-platform",
193 .pm = &ehci_platform_pm_ops,
194 }
195};
196
