This source file includes following definitions.
- ehci_sh_reset
- ehci_hcd_sh_probe
- ehci_hcd_sh_remove
- ehci_hcd_sh_shutdown
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8
9 #include <linux/platform_device.h>
10 #include <linux/clk.h>
11 #include <linux/platform_data/ehci-sh.h>
12
13 struct ehci_sh_priv {
14 struct clk *iclk, *fclk;
15 struct usb_hcd *hcd;
16 };
17
18 static int ehci_sh_reset(struct usb_hcd *hcd)
19 {
20 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
21
22 ehci->caps = hcd->regs;
23
24 return ehci_setup(hcd);
25 }
26
27 static const struct hc_driver ehci_sh_hc_driver = {
28 .description = hcd_name,
29 .product_desc = "SuperH EHCI",
30 .hcd_priv_size = sizeof(struct ehci_hcd),
31
32
33
34
35 .irq = ehci_irq,
36 .flags = HCD_USB2 | HCD_DMA | HCD_MEMORY | HCD_BH,
37
38
39
40
41 .reset = ehci_sh_reset,
42 .start = ehci_run,
43 .stop = ehci_stop,
44 .shutdown = ehci_shutdown,
45
46
47
48
49 .urb_enqueue = ehci_urb_enqueue,
50 .urb_dequeue = ehci_urb_dequeue,
51 .endpoint_disable = ehci_endpoint_disable,
52 .endpoint_reset = ehci_endpoint_reset,
53
54
55
56
57 .get_frame_number = ehci_get_frame,
58
59
60
61
62 .hub_status_data = ehci_hub_status_data,
63 .hub_control = ehci_hub_control,
64
65 #ifdef CONFIG_PM
66 .bus_suspend = ehci_bus_suspend,
67 .bus_resume = ehci_bus_resume,
68 #endif
69
70 .relinquish_port = ehci_relinquish_port,
71 .port_handed_over = ehci_port_handed_over,
72 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
73 };
74
75 static int ehci_hcd_sh_probe(struct platform_device *pdev)
76 {
77 struct resource *res;
78 struct ehci_sh_priv *priv;
79 struct ehci_sh_platdata *pdata;
80 struct usb_hcd *hcd;
81 int irq, ret;
82
83 if (usb_disabled())
84 return -ENODEV;
85
86 irq = platform_get_irq(pdev, 0);
87 if (irq <= 0) {
88 ret = -ENODEV;
89 goto fail_create_hcd;
90 }
91
92 pdata = dev_get_platdata(&pdev->dev);
93
94
95 hcd = usb_create_hcd(&ehci_sh_hc_driver, &pdev->dev,
96 dev_name(&pdev->dev));
97 if (!hcd) {
98 ret = -ENOMEM;
99 goto fail_create_hcd;
100 }
101
102 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
103 hcd->regs = devm_ioremap_resource(&pdev->dev, res);
104 if (IS_ERR(hcd->regs)) {
105 ret = PTR_ERR(hcd->regs);
106 goto fail_request_resource;
107 }
108 hcd->rsrc_start = res->start;
109 hcd->rsrc_len = resource_size(res);
110
111 priv = devm_kzalloc(&pdev->dev, sizeof(struct ehci_sh_priv),
112 GFP_KERNEL);
113 if (!priv) {
114 ret = -ENOMEM;
115 goto fail_request_resource;
116 }
117
118
119 priv->fclk = devm_clk_get(&pdev->dev, "usb_fck");
120 if (IS_ERR(priv->fclk))
121 priv->fclk = NULL;
122
123 priv->iclk = devm_clk_get(&pdev->dev, "usb_ick");
124 if (IS_ERR(priv->iclk))
125 priv->iclk = NULL;
126
127 clk_enable(priv->fclk);
128 clk_enable(priv->iclk);
129
130 if (pdata && pdata->phy_init)
131 pdata->phy_init();
132
133 ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
134 if (ret != 0) {
135 dev_err(&pdev->dev, "Failed to add hcd");
136 goto fail_add_hcd;
137 }
138 device_wakeup_enable(hcd->self.controller);
139
140 priv->hcd = hcd;
141 platform_set_drvdata(pdev, priv);
142
143 return ret;
144
145 fail_add_hcd:
146 clk_disable(priv->iclk);
147 clk_disable(priv->fclk);
148
149 fail_request_resource:
150 usb_put_hcd(hcd);
151 fail_create_hcd:
152 dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), ret);
153
154 return ret;
155 }
156
157 static int ehci_hcd_sh_remove(struct platform_device *pdev)
158 {
159 struct ehci_sh_priv *priv = platform_get_drvdata(pdev);
160 struct usb_hcd *hcd = priv->hcd;
161
162 usb_remove_hcd(hcd);
163 usb_put_hcd(hcd);
164
165 clk_disable(priv->fclk);
166 clk_disable(priv->iclk);
167
168 return 0;
169 }
170
171 static void ehci_hcd_sh_shutdown(struct platform_device *pdev)
172 {
173 struct ehci_sh_priv *priv = platform_get_drvdata(pdev);
174 struct usb_hcd *hcd = priv->hcd;
175
176 if (hcd->driver->shutdown)
177 hcd->driver->shutdown(hcd);
178 }
179
180 static struct platform_driver ehci_hcd_sh_driver = {
181 .probe = ehci_hcd_sh_probe,
182 .remove = ehci_hcd_sh_remove,
183 .shutdown = ehci_hcd_sh_shutdown,
184 .driver = {
185 .name = "sh_ehci",
186 },
187 };
188
189 MODULE_ALIAS("platform:sh_ehci");