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