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21#include <linux/platform_device.h>
22#include <linux/signal.h>
23
24#include <asm/mach-au1x00/au1000.h>
25
26#ifndef CONFIG_SOC_AU1200
27
28#define USBH_ENABLE_BE (1<<0)
29#define USBH_ENABLE_C (1<<1)
30#define USBH_ENABLE_E (1<<2)
31#define USBH_ENABLE_CE (1<<3)
32#define USBH_ENABLE_RD (1<<4)
33
34#ifdef __LITTLE_ENDIAN
35#define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C)
36#elif __BIG_ENDIAN
37#define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C | \
38 USBH_ENABLE_BE)
39#else
40#error not byte order defined
41#endif
42
43#else
44
45#define USB_HOST_CONFIG (USB_MSR_BASE + USB_MSR_MCFG)
46#define USB_MCFG_PFEN (1<<31)
47#define USB_MCFG_RDCOMB (1<<30)
48#define USB_MCFG_SSDEN (1<<23)
49#define USB_MCFG_OHCCLKEN (1<<16)
50#ifdef CONFIG_DMA_COHERENT
51#define USB_MCFG_UCAM (1<<7)
52#else
53#define USB_MCFG_UCAM (0)
54#endif
55#define USB_MCFG_OBMEN (1<<1)
56#define USB_MCFG_OMEMEN (1<<0)
57
58#define USBH_ENABLE_CE USB_MCFG_OHCCLKEN
59
60#define USBH_ENABLE_INIT (USB_MCFG_PFEN | USB_MCFG_RDCOMB | \
61 USBH_ENABLE_CE | USB_MCFG_SSDEN | \
62 USB_MCFG_UCAM | \
63 USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
64
65#define USBH_DISABLE (USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
66
67#endif
68
69extern int usb_disabled(void);
70
71static void au1xxx_start_ohc(void)
72{
73
74#ifndef CONFIG_SOC_AU1200
75 au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG);
76 au_sync();
77 udelay(1000);
78
79 au_writel(au_readl(USB_HOST_CONFIG) | USBH_ENABLE_INIT, USB_HOST_CONFIG);
80 au_sync();
81 udelay(1000);
82
83
84 while (au_readl(USB_HOST_CONFIG),
85 !(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD))
86 udelay(1000);
87
88#else
89 au_writel(au_readl(USB_HOST_CONFIG) | USBH_ENABLE_CE, USB_HOST_CONFIG);
90 au_sync();
91 udelay(1000);
92
93 au_writel(au_readl(USB_HOST_CONFIG) | USBH_ENABLE_INIT, USB_HOST_CONFIG);
94 au_sync();
95 udelay(2000);
96#endif
97}
98
99static void au1xxx_stop_ohc(void)
100{
101#ifdef CONFIG_SOC_AU1200
102
103 au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_DISABLE, USB_HOST_CONFIG);
104 au_sync();
105 udelay(1000);
106#endif
107
108 au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG);
109 au_sync();
110}
111
112static int __devinit ohci_au1xxx_start(struct usb_hcd *hcd)
113{
114 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
115 int ret;
116
117 ohci_dbg(ohci, "ohci_au1xxx_start, ohci:%p", ohci);
118
119 if ((ret = ohci_init(ohci)) < 0)
120 return ret;
121
122 if ((ret = ohci_run(ohci)) < 0) {
123 err ("can't start %s", hcd->self.bus_name);
124 ohci_stop(hcd);
125 return ret;
126 }
127
128 return 0;
129}
130
131static const struct hc_driver ohci_au1xxx_hc_driver = {
132 .description = hcd_name,
133 .product_desc = "Au1xxx OHCI",
134 .hcd_priv_size = sizeof(struct ohci_hcd),
135
136
137
138
139 .irq = ohci_irq,
140 .flags = HCD_USB11 | HCD_MEMORY,
141
142
143
144
145 .start = ohci_au1xxx_start,
146 .stop = ohci_stop,
147 .shutdown = ohci_shutdown,
148
149
150
151
152 .urb_enqueue = ohci_urb_enqueue,
153 .urb_dequeue = ohci_urb_dequeue,
154 .endpoint_disable = ohci_endpoint_disable,
155
156
157
158
159 .get_frame_number = ohci_get_frame,
160
161
162
163
164 .hub_status_data = ohci_hub_status_data,
165 .hub_control = ohci_hub_control,
166#ifdef CONFIG_PM
167 .bus_suspend = ohci_bus_suspend,
168 .bus_resume = ohci_bus_resume,
169#endif
170 .start_port_reset = ohci_start_port_reset,
171};
172
173static int ohci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
174{
175 int ret;
176 struct usb_hcd *hcd;
177
178 if (usb_disabled())
179 return -ENODEV;
180
181#if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT)
182
183 if (!(read_c0_prid() & 0xff)) {
184 printk(KERN_INFO "%s: this is chip revision AB !!\n",
185 pdev->name);
186 printk(KERN_INFO "%s: update your board or re-configure "
187 "the kernel\n", pdev->name);
188 return -ENODEV;
189 }
190#endif
191
192 if (pdev->resource[1].flags != IORESOURCE_IRQ) {
193 pr_debug("resource[1] is not IORESOURCE_IRQ\n");
194 return -ENOMEM;
195 }
196
197 hcd = usb_create_hcd(&ohci_au1xxx_hc_driver, &pdev->dev, "au1xxx");
198 if (!hcd)
199 return -ENOMEM;
200
201 hcd->rsrc_start = pdev->resource[0].start;
202 hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
203
204 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
205 pr_debug("request_mem_region failed\n");
206 ret = -EBUSY;
207 goto err1;
208 }
209
210 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
211 if (!hcd->regs) {
212 pr_debug("ioremap failed\n");
213 ret = -ENOMEM;
214 goto err2;
215 }
216
217 au1xxx_start_ohc();
218 ohci_hcd_init(hcd_to_ohci(hcd));
219
220 ret = usb_add_hcd(hcd, pdev->resource[1].start,
221 IRQF_DISABLED | IRQF_SHARED);
222 if (ret == 0) {
223 platform_set_drvdata(pdev, hcd);
224 return ret;
225 }
226
227 au1xxx_stop_ohc();
228 iounmap(hcd->regs);
229err2:
230 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
231err1:
232 usb_put_hcd(hcd);
233 return ret;
234}
235
236static int ohci_hcd_au1xxx_drv_remove(struct platform_device *pdev)
237{
238 struct usb_hcd *hcd = platform_get_drvdata(pdev);
239
240 usb_remove_hcd(hcd);
241 au1xxx_stop_ohc();
242 iounmap(hcd->regs);
243 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
244 usb_put_hcd(hcd);
245 platform_set_drvdata(pdev, NULL);
246
247 return 0;
248}
249
250#ifdef CONFIG_PM
251static int ohci_hcd_au1xxx_drv_suspend(struct device *dev)
252{
253 struct usb_hcd *hcd = dev_get_drvdata(dev);
254 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
255 unsigned long flags;
256 int rc;
257
258 rc = 0;
259
260
261
262
263
264
265
266
267
268 spin_lock_irqsave(&ohci->lock, flags);
269 if (hcd->state != HC_STATE_SUSPENDED) {
270 rc = -EINVAL;
271 goto bail;
272 }
273 ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
274 (void)ohci_readl(ohci, &ohci->regs->intrdisable);
275
276 clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
277
278 au1xxx_stop_ohc();
279bail:
280 spin_unlock_irqrestore(&ohci->lock, flags);
281
282 return rc;
283}
284
285static int ohci_hcd_au1xxx_drv_resume(struct device *dev)
286{
287 struct usb_hcd *hcd = dev_get_drvdata(dev);
288
289 au1xxx_start_ohc();
290
291 set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
292 ohci_finish_controller_resume(hcd);
293
294 return 0;
295}
296
297static struct dev_pm_ops au1xxx_ohci_pmops = {
298 .suspend = ohci_hcd_au1xxx_drv_suspend,
299 .resume = ohci_hcd_au1xxx_drv_resume,
300};
301
302#define AU1XXX_OHCI_PMOPS &au1xxx_ohci_pmops
303
304#else
305#define AU1XXX_OHCI_PMOPS NULL
306#endif
307
308static struct platform_driver ohci_hcd_au1xxx_driver = {
309 .probe = ohci_hcd_au1xxx_drv_probe,
310 .remove = ohci_hcd_au1xxx_drv_remove,
311 .shutdown = usb_hcd_platform_shutdown,
312 .driver = {
313 .name = "au1xxx-ohci",
314 .owner = THIS_MODULE,
315 .pm = AU1XXX_OHCI_PMOPS,
316 },
317};
318
319MODULE_ALIAS("platform:au1xxx-ohci");
320
