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16#include <asm/mach-types.h>
17#include <asm/hardware/sa1111.h>
18
19#ifndef CONFIG_SA1111
20#error "This file is SA-1111 bus glue. CONFIG_SA1111 must be defined."
21#endif
22
23#define USB_STATUS 0x0118
24#define USB_RESET 0x011c
25#define USB_IRQTEST 0x0120
26
27#define USB_RESET_FORCEIFRESET (1 << 0)
28#define USB_RESET_FORCEHCRESET (1 << 1)
29#define USB_RESET_CLKGENRESET (1 << 2)
30#define USB_RESET_SIMSCALEDOWN (1 << 3)
31#define USB_RESET_USBINTTEST (1 << 4)
32#define USB_RESET_SLEEPSTBYEN (1 << 5)
33#define USB_RESET_PWRSENSELOW (1 << 6)
34#define USB_RESET_PWRCTRLLOW (1 << 7)
35
36#define USB_STATUS_IRQHCIRMTWKUP (1 << 7)
37#define USB_STATUS_IRQHCIBUFFACC (1 << 8)
38#define USB_STATUS_NIRQHCIM (1 << 9)
39#define USB_STATUS_NHCIMFCLR (1 << 10)
40#define USB_STATUS_USBPWRSENSE (1 << 11)
41
42#if 0
43static void dump_hci_status(struct usb_hcd *hcd, const char *label)
44{
45 unsigned long status = sa1111_readl(hcd->regs + USB_STATUS);
46
47 printk(KERN_DEBUG "%s USB_STATUS = { %s%s%s%s%s}\n", label,
48 ((status & USB_STATUS_IRQHCIRMTWKUP) ? "IRQHCIRMTWKUP " : ""),
49 ((status & USB_STATUS_IRQHCIBUFFACC) ? "IRQHCIBUFFACC " : ""),
50 ((status & USB_STATUS_NIRQHCIM) ? "" : "IRQHCIM "),
51 ((status & USB_STATUS_NHCIMFCLR) ? "" : "HCIMFCLR "),
52 ((status & USB_STATUS_USBPWRSENSE) ? "USBPWRSENSE " : ""));
53}
54#endif
55
56static int ohci_sa1111_reset(struct usb_hcd *hcd)
57{
58 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
59
60 ohci_hcd_init(ohci);
61 return ohci_init(ohci);
62}
63
64static int ohci_sa1111_start(struct usb_hcd *hcd)
65{
66 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
67 int ret;
68
69 ret = ohci_run(ohci);
70 if (ret < 0) {
71 ohci_err(ohci, "can't start\n");
72 ohci_stop(hcd);
73 }
74 return ret;
75}
76
77static const struct hc_driver ohci_sa1111_hc_driver = {
78 .description = hcd_name,
79 .product_desc = "SA-1111 OHCI",
80 .hcd_priv_size = sizeof(struct ohci_hcd),
81
82
83
84
85 .irq = ohci_irq,
86 .flags = HCD_USB11 | HCD_MEMORY,
87
88
89
90
91 .reset = ohci_sa1111_reset,
92 .start = ohci_sa1111_start,
93 .stop = ohci_stop,
94 .shutdown = ohci_shutdown,
95
96
97
98
99 .urb_enqueue = ohci_urb_enqueue,
100 .urb_dequeue = ohci_urb_dequeue,
101 .endpoint_disable = ohci_endpoint_disable,
102
103
104
105
106 .get_frame_number = ohci_get_frame,
107
108
109
110
111 .hub_status_data = ohci_hub_status_data,
112 .hub_control = ohci_hub_control,
113#ifdef CONFIG_PM
114 .bus_suspend = ohci_bus_suspend,
115 .bus_resume = ohci_bus_resume,
116#endif
117 .start_port_reset = ohci_start_port_reset,
118};
119
120static int sa1111_start_hc(struct sa1111_dev *dev)
121{
122 unsigned int usb_rst = 0;
123 int ret;
124
125 dev_dbg(&dev->dev, "starting SA-1111 OHCI USB Controller\n");
126
127 if (machine_is_xp860() ||
128 machine_is_assabet() ||
129 machine_is_pfs168() ||
130 machine_is_badge4())
131 usb_rst = USB_RESET_PWRSENSELOW | USB_RESET_PWRCTRLLOW;
132
133
134
135
136
137 sa1111_writel(usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET,
138 dev->mapbase + USB_RESET);
139
140
141
142
143
144 ret = sa1111_enable_device(dev);
145 if (ret == 0) {
146 udelay(11);
147 sa1111_writel(usb_rst, dev->mapbase + USB_RESET);
148 }
149
150 return ret;
151}
152
153static void sa1111_stop_hc(struct sa1111_dev *dev)
154{
155 unsigned int usb_rst;
156
157 dev_dbg(&dev->dev, "stopping SA-1111 OHCI USB Controller\n");
158
159
160
161
162 usb_rst = sa1111_readl(dev->mapbase + USB_RESET);
163 sa1111_writel(usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET,
164 dev->mapbase + USB_RESET);
165
166
167
168
169 sa1111_disable_device(dev);
170}
171
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176
177
178static int ohci_hcd_sa1111_probe(struct sa1111_dev *dev)
179{
180 struct usb_hcd *hcd;
181 int ret;
182
183 if (usb_disabled())
184 return -ENODEV;
185
186
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189
190
191
192 hcd = usb_create_hcd(&ohci_sa1111_hc_driver, &dev->dev, "sa1111");
193 if (!hcd)
194 return -ENOMEM;
195
196 hcd->rsrc_start = dev->res.start;
197 hcd->rsrc_len = resource_size(&dev->res);
198
199 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
200 dev_dbg(&dev->dev, "request_mem_region failed\n");
201 ret = -EBUSY;
202 goto err1;
203 }
204
205 hcd->regs = dev->mapbase;
206
207 ret = sa1111_start_hc(dev);
208 if (ret)
209 goto err2;
210
211 ret = usb_add_hcd(hcd, dev->irq[1], 0);
212 if (ret == 0) {
213 device_wakeup_enable(hcd->self.controller);
214 return ret;
215 }
216
217 sa1111_stop_hc(dev);
218 err2:
219 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
220 err1:
221 usb_put_hcd(hcd);
222 return ret;
223}
224
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229
230
231
232static int ohci_hcd_sa1111_remove(struct sa1111_dev *dev)
233{
234 struct usb_hcd *hcd = sa1111_get_drvdata(dev);
235
236 usb_remove_hcd(hcd);
237 sa1111_stop_hc(dev);
238 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
239 usb_put_hcd(hcd);
240
241 return 0;
242}
243
244static void ohci_hcd_sa1111_shutdown(struct sa1111_dev *dev)
245{
246 struct usb_hcd *hcd = sa1111_get_drvdata(dev);
247
248 if (test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
249 hcd->driver->shutdown(hcd);
250 sa1111_stop_hc(dev);
251 }
252}
253
254static struct sa1111_driver ohci_hcd_sa1111_driver = {
255 .drv = {
256 .name = "sa1111-ohci",
257 .owner = THIS_MODULE,
258 },
259 .devid = SA1111_DEVID_USB,
260 .probe = ohci_hcd_sa1111_probe,
261 .remove = ohci_hcd_sa1111_remove,
262 .shutdown = ohci_hcd_sa1111_shutdown,
263};
264