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23faf2bc MV |
1 | /* |
2 | * | |
3 | * Most of this source has been derived from the Linux USB | |
4 | * project: | |
5 | * (C) Copyright Linus Torvalds 1999 | |
6 | * (C) Copyright Johannes Erdfelt 1999-2001 | |
7 | * (C) Copyright Andreas Gal 1999 | |
8 | * (C) Copyright Gregory P. Smith 1999 | |
9 | * (C) Copyright Deti Fliegl 1999 (new USB architecture) | |
10 | * (C) Copyright Randy Dunlap 2000 | |
11 | * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id) | |
12 | * (C) Copyright Yggdrasil Computing, Inc. 2000 | |
13 | * (usb_device_id matching changes by Adam J. Richter) | |
14 | * | |
15 | * Adapted for U-Boot: | |
16 | * (C) Copyright 2001 Denis Peter, MPL AG Switzerland | |
17 | * | |
18 | * See file CREDITS for list of people who contributed to this | |
19 | * project. | |
20 | * | |
21 | * This program is free software; you can redistribute it and/or | |
22 | * modify it under the terms of the GNU General Public License as | |
23 | * published by the Free Software Foundation; either version 2 of | |
24 | * the License, or (at your option) any later version. | |
25 | * | |
26 | * This program is distributed in the hope that it will be useful, | |
27 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
29 | * GNU General Public License for more details. | |
30 | * | |
31 | * You should have received a copy of the GNU General Public License | |
32 | * along with this program; if not, write to the Free Software | |
33 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
34 | * MA 02111-1307 USA | |
35 | * | |
36 | */ | |
37 | ||
38 | /**************************************************************************** | |
39 | * HUB "Driver" | |
40 | * Probes device for being a hub and configurate it | |
41 | */ | |
42 | ||
43 | #include <common.h> | |
44 | #include <command.h> | |
45 | #include <asm/processor.h> | |
93ad908c | 46 | #include <asm/unaligned.h> |
23faf2bc MV |
47 | #include <linux/ctype.h> |
48 | #include <asm/byteorder.h> | |
49 | #include <asm/unaligned.h> | |
50 | ||
51 | #include <usb.h> | |
52 | #ifdef CONFIG_4xx | |
53 | #include <asm/4xx_pci.h> | |
54 | #endif | |
55 | ||
56 | #ifdef DEBUG | |
57 | #define USB_DEBUG 1 | |
58 | #define USB_HUB_DEBUG 1 | |
59 | #else | |
60 | #define USB_DEBUG 0 | |
61 | #define USB_HUB_DEBUG 0 | |
62 | #endif | |
63 | ||
64 | #define USB_PRINTF(fmt, args...) debug_cond(USB_DEBUG, fmt, ##args) | |
65 | #define USB_HUB_PRINTF(fmt, args...) debug_cond(USB_HUB_DEBUG, fmt, ##args) | |
66 | ||
67 | #define USB_BUFSIZ 512 | |
68 | ||
69 | static struct usb_hub_device hub_dev[USB_MAX_HUB]; | |
70 | static int usb_hub_index; | |
71 | ||
72 | ||
73 | static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size) | |
74 | { | |
75 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
76 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB, | |
77 | USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT); | |
78 | } | |
79 | ||
80 | static int usb_clear_port_feature(struct usb_device *dev, int port, int feature) | |
81 | { | |
82 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
83 | USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, | |
84 | port, NULL, 0, USB_CNTL_TIMEOUT); | |
85 | } | |
86 | ||
87 | static int usb_set_port_feature(struct usb_device *dev, int port, int feature) | |
88 | { | |
89 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
90 | USB_REQ_SET_FEATURE, USB_RT_PORT, feature, | |
91 | port, NULL, 0, USB_CNTL_TIMEOUT); | |
92 | } | |
93 | ||
94 | static int usb_get_hub_status(struct usb_device *dev, void *data) | |
95 | { | |
96 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
97 | USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0, | |
98 | data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); | |
99 | } | |
100 | ||
101 | static int usb_get_port_status(struct usb_device *dev, int port, void *data) | |
102 | { | |
103 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
104 | USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port, | |
105 | data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); | |
106 | } | |
107 | ||
108 | ||
109 | static void usb_hub_power_on(struct usb_hub_device *hub) | |
110 | { | |
111 | int i; | |
112 | struct usb_device *dev; | |
a1a28c6e | 113 | unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2; |
23faf2bc MV |
114 | |
115 | dev = hub->pusb_dev; | |
116 | /* Enable power to the ports */ | |
117 | USB_HUB_PRINTF("enabling power on all ports\n"); | |
118 | for (i = 0; i < dev->maxchild; i++) { | |
119 | usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER); | |
120 | USB_HUB_PRINTF("port %d returns %lX\n", i + 1, dev->status); | |
23faf2bc | 121 | } |
a1a28c6e WG |
122 | |
123 | /* Wait at least 100 msec for power to become stable */ | |
5b84dd67 | 124 | mdelay(max(pgood_delay, (unsigned)100)); |
23faf2bc MV |
125 | } |
126 | ||
127 | void usb_hub_reset(void) | |
128 | { | |
129 | usb_hub_index = 0; | |
130 | } | |
131 | ||
132 | static struct usb_hub_device *usb_hub_allocate(void) | |
133 | { | |
134 | if (usb_hub_index < USB_MAX_HUB) | |
135 | return &hub_dev[usb_hub_index++]; | |
136 | ||
137 | printf("ERROR: USB_MAX_HUB (%d) reached\n", USB_MAX_HUB); | |
138 | return NULL; | |
139 | } | |
140 | ||
141 | #define MAX_TRIES 5 | |
142 | ||
143 | static inline char *portspeed(int portstatus) | |
144 | { | |
145 | if (portstatus & (1 << USB_PORT_FEAT_HIGHSPEED)) | |
146 | return "480 Mb/s"; | |
147 | else if (portstatus & (1 << USB_PORT_FEAT_LOWSPEED)) | |
148 | return "1.5 Mb/s"; | |
149 | else | |
150 | return "12 Mb/s"; | |
151 | } | |
152 | ||
153 | int hub_port_reset(struct usb_device *dev, int port, | |
154 | unsigned short *portstat) | |
155 | { | |
156 | int tries; | |
f5766139 | 157 | ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); |
23faf2bc MV |
158 | unsigned short portstatus, portchange; |
159 | ||
160 | USB_HUB_PRINTF("hub_port_reset: resetting port %d...\n", port); | |
161 | for (tries = 0; tries < MAX_TRIES; tries++) { | |
162 | ||
163 | usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET); | |
5b84dd67 | 164 | mdelay(200); |
23faf2bc | 165 | |
f5766139 | 166 | if (usb_get_port_status(dev, port + 1, portsts) < 0) { |
23faf2bc MV |
167 | USB_HUB_PRINTF("get_port_status failed status %lX\n", |
168 | dev->status); | |
169 | return -1; | |
170 | } | |
f5766139 PS |
171 | portstatus = le16_to_cpu(portsts->wPortStatus); |
172 | portchange = le16_to_cpu(portsts->wPortChange); | |
23faf2bc MV |
173 | |
174 | USB_HUB_PRINTF("portstatus %x, change %x, %s\n", | |
175 | portstatus, portchange, | |
176 | portspeed(portstatus)); | |
177 | ||
178 | USB_HUB_PRINTF("STAT_C_CONNECTION = %d STAT_CONNECTION = %d" \ | |
179 | " USB_PORT_STAT_ENABLE %d\n", | |
180 | (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0, | |
181 | (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0, | |
182 | (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0); | |
183 | ||
184 | if ((portchange & USB_PORT_STAT_C_CONNECTION) || | |
185 | !(portstatus & USB_PORT_STAT_CONNECTION)) | |
186 | return -1; | |
187 | ||
188 | if (portstatus & USB_PORT_STAT_ENABLE) | |
189 | break; | |
190 | ||
5b84dd67 | 191 | mdelay(200); |
23faf2bc MV |
192 | } |
193 | ||
194 | if (tries == MAX_TRIES) { | |
195 | USB_HUB_PRINTF("Cannot enable port %i after %i retries, " \ | |
196 | "disabling port.\n", port + 1, MAX_TRIES); | |
197 | USB_HUB_PRINTF("Maybe the USB cable is bad?\n"); | |
198 | return -1; | |
199 | } | |
200 | ||
201 | usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET); | |
202 | *portstat = portstatus; | |
203 | return 0; | |
204 | } | |
205 | ||
206 | ||
207 | void usb_hub_port_connect_change(struct usb_device *dev, int port) | |
208 | { | |
209 | struct usb_device *usb; | |
f5766139 | 210 | ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); |
23faf2bc MV |
211 | unsigned short portstatus; |
212 | ||
213 | /* Check status */ | |
f5766139 | 214 | if (usb_get_port_status(dev, port + 1, portsts) < 0) { |
23faf2bc MV |
215 | USB_HUB_PRINTF("get_port_status failed\n"); |
216 | return; | |
217 | } | |
218 | ||
f5766139 | 219 | portstatus = le16_to_cpu(portsts->wPortStatus); |
23faf2bc MV |
220 | USB_HUB_PRINTF("portstatus %x, change %x, %s\n", |
221 | portstatus, | |
f5766139 | 222 | le16_to_cpu(portsts->wPortChange), |
23faf2bc MV |
223 | portspeed(portstatus)); |
224 | ||
225 | /* Clear the connection change status */ | |
226 | usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION); | |
227 | ||
228 | /* Disconnect any existing devices under this port */ | |
229 | if (((!(portstatus & USB_PORT_STAT_CONNECTION)) && | |
230 | (!(portstatus & USB_PORT_STAT_ENABLE))) || (dev->children[port])) { | |
231 | USB_HUB_PRINTF("usb_disconnect(&hub->children[port]);\n"); | |
232 | /* Return now if nothing is connected */ | |
233 | if (!(portstatus & USB_PORT_STAT_CONNECTION)) | |
234 | return; | |
235 | } | |
5b84dd67 | 236 | mdelay(200); |
23faf2bc MV |
237 | |
238 | /* Reset the port */ | |
239 | if (hub_port_reset(dev, port, &portstatus) < 0) { | |
240 | printf("cannot reset port %i!?\n", port + 1); | |
241 | return; | |
242 | } | |
243 | ||
5b84dd67 | 244 | mdelay(200); |
23faf2bc MV |
245 | |
246 | /* Allocate a new device struct for it */ | |
c7e3b2b5 | 247 | usb = usb_alloc_new_device(dev->controller); |
23faf2bc MV |
248 | |
249 | if (portstatus & USB_PORT_STAT_HIGH_SPEED) | |
250 | usb->speed = USB_SPEED_HIGH; | |
251 | else if (portstatus & USB_PORT_STAT_LOW_SPEED) | |
252 | usb->speed = USB_SPEED_LOW; | |
253 | else | |
254 | usb->speed = USB_SPEED_FULL; | |
255 | ||
256 | dev->children[port] = usb; | |
257 | usb->parent = dev; | |
258 | usb->portnr = port + 1; | |
259 | /* Run it through the hoops (find a driver, etc) */ | |
260 | if (usb_new_device(usb)) { | |
261 | /* Woops, disable the port */ | |
262 | USB_HUB_PRINTF("hub: disabling port %d\n", port + 1); | |
263 | usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE); | |
264 | } | |
265 | } | |
266 | ||
267 | ||
268 | static int usb_hub_configure(struct usb_device *dev) | |
269 | { | |
270 | int i; | |
f5766139 PS |
271 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, USB_BUFSIZ); |
272 | unsigned char *bitmap; | |
93ad908c | 273 | short hubCharacteristics; |
23faf2bc MV |
274 | struct usb_hub_descriptor *descriptor; |
275 | struct usb_hub_device *hub; | |
276 | #ifdef USB_HUB_DEBUG | |
277 | struct usb_hub_status *hubsts; | |
278 | #endif | |
279 | ||
280 | /* "allocate" Hub device */ | |
281 | hub = usb_hub_allocate(); | |
282 | if (hub == NULL) | |
283 | return -1; | |
284 | hub->pusb_dev = dev; | |
285 | /* Get the the hub descriptor */ | |
286 | if (usb_get_hub_descriptor(dev, buffer, 4) < 0) { | |
287 | USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \ | |
288 | "descriptor, giving up %lX\n", dev->status); | |
289 | return -1; | |
290 | } | |
291 | descriptor = (struct usb_hub_descriptor *)buffer; | |
292 | ||
293 | /* silence compiler warning if USB_BUFSIZ is > 256 [= sizeof(char)] */ | |
294 | i = descriptor->bLength; | |
295 | if (i > USB_BUFSIZ) { | |
296 | USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \ | |
297 | "descriptor - too long: %d\n", | |
298 | descriptor->bLength); | |
299 | return -1; | |
300 | } | |
301 | ||
302 | if (usb_get_hub_descriptor(dev, buffer, descriptor->bLength) < 0) { | |
303 | USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \ | |
304 | "descriptor 2nd giving up %lX\n", dev->status); | |
305 | return -1; | |
306 | } | |
307 | memcpy((unsigned char *)&hub->desc, buffer, descriptor->bLength); | |
308 | /* adjust 16bit values */ | |
93ad908c LS |
309 | put_unaligned(le16_to_cpu(get_unaligned( |
310 | &descriptor->wHubCharacteristics)), | |
311 | &hub->desc.wHubCharacteristics); | |
23faf2bc MV |
312 | /* set the bitmap */ |
313 | bitmap = (unsigned char *)&hub->desc.DeviceRemovable[0]; | |
314 | /* devices not removable by default */ | |
315 | memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); | |
316 | bitmap = (unsigned char *)&hub->desc.PortPowerCtrlMask[0]; | |
317 | memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */ | |
318 | ||
319 | for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) | |
320 | hub->desc.DeviceRemovable[i] = descriptor->DeviceRemovable[i]; | |
321 | ||
322 | for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) | |
323 | hub->desc.PortPowerCtrlMask[i] = descriptor->PortPowerCtrlMask[i]; | |
324 | ||
325 | dev->maxchild = descriptor->bNbrPorts; | |
326 | USB_HUB_PRINTF("%d ports detected\n", dev->maxchild); | |
327 | ||
93ad908c LS |
328 | hubCharacteristics = get_unaligned(&hub->desc.wHubCharacteristics); |
329 | switch (hubCharacteristics & HUB_CHAR_LPSM) { | |
23faf2bc MV |
330 | case 0x00: |
331 | USB_HUB_PRINTF("ganged power switching\n"); | |
332 | break; | |
333 | case 0x01: | |
334 | USB_HUB_PRINTF("individual port power switching\n"); | |
335 | break; | |
336 | case 0x02: | |
337 | case 0x03: | |
338 | USB_HUB_PRINTF("unknown reserved power switching mode\n"); | |
339 | break; | |
340 | } | |
341 | ||
93ad908c | 342 | if (hubCharacteristics & HUB_CHAR_COMPOUND) |
23faf2bc MV |
343 | USB_HUB_PRINTF("part of a compound device\n"); |
344 | else | |
345 | USB_HUB_PRINTF("standalone hub\n"); | |
346 | ||
93ad908c | 347 | switch (hubCharacteristics & HUB_CHAR_OCPM) { |
23faf2bc MV |
348 | case 0x00: |
349 | USB_HUB_PRINTF("global over-current protection\n"); | |
350 | break; | |
351 | case 0x08: | |
352 | USB_HUB_PRINTF("individual port over-current protection\n"); | |
353 | break; | |
354 | case 0x10: | |
355 | case 0x18: | |
356 | USB_HUB_PRINTF("no over-current protection\n"); | |
357 | break; | |
358 | } | |
359 | ||
360 | USB_HUB_PRINTF("power on to power good time: %dms\n", | |
361 | descriptor->bPwrOn2PwrGood * 2); | |
362 | USB_HUB_PRINTF("hub controller current requirement: %dmA\n", | |
363 | descriptor->bHubContrCurrent); | |
364 | ||
365 | for (i = 0; i < dev->maxchild; i++) | |
366 | USB_HUB_PRINTF("port %d is%s removable\n", i + 1, | |
367 | hub->desc.DeviceRemovable[(i + 1) / 8] & \ | |
368 | (1 << ((i + 1) % 8)) ? " not" : ""); | |
369 | ||
370 | if (sizeof(struct usb_hub_status) > USB_BUFSIZ) { | |
371 | USB_HUB_PRINTF("usb_hub_configure: failed to get Status - " \ | |
372 | "too long: %d\n", descriptor->bLength); | |
373 | return -1; | |
374 | } | |
375 | ||
376 | if (usb_get_hub_status(dev, buffer) < 0) { | |
377 | USB_HUB_PRINTF("usb_hub_configure: failed to get Status %lX\n", | |
378 | dev->status); | |
379 | return -1; | |
380 | } | |
381 | ||
382 | #ifdef USB_HUB_DEBUG | |
383 | hubsts = (struct usb_hub_status *)buffer; | |
384 | #endif | |
385 | USB_HUB_PRINTF("get_hub_status returned status %X, change %X\n", | |
386 | le16_to_cpu(hubsts->wHubStatus), | |
387 | le16_to_cpu(hubsts->wHubChange)); | |
388 | USB_HUB_PRINTF("local power source is %s\n", | |
389 | (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? \ | |
390 | "lost (inactive)" : "good"); | |
391 | USB_HUB_PRINTF("%sover-current condition exists\n", | |
392 | (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \ | |
393 | "" : "no "); | |
394 | usb_hub_power_on(hub); | |
395 | ||
396 | for (i = 0; i < dev->maxchild; i++) { | |
f5766139 | 397 | ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); |
23faf2bc MV |
398 | unsigned short portstatus, portchange; |
399 | ||
f5766139 | 400 | if (usb_get_port_status(dev, i + 1, portsts) < 0) { |
23faf2bc MV |
401 | USB_HUB_PRINTF("get_port_status failed\n"); |
402 | continue; | |
403 | } | |
404 | ||
f5766139 PS |
405 | portstatus = le16_to_cpu(portsts->wPortStatus); |
406 | portchange = le16_to_cpu(portsts->wPortChange); | |
23faf2bc MV |
407 | USB_HUB_PRINTF("Port %d Status %X Change %X\n", |
408 | i + 1, portstatus, portchange); | |
409 | ||
410 | if (portchange & USB_PORT_STAT_C_CONNECTION) { | |
411 | USB_HUB_PRINTF("port %d connection change\n", i + 1); | |
412 | usb_hub_port_connect_change(dev, i); | |
413 | } | |
414 | if (portchange & USB_PORT_STAT_C_ENABLE) { | |
415 | USB_HUB_PRINTF("port %d enable change, status %x\n", | |
416 | i + 1, portstatus); | |
417 | usb_clear_port_feature(dev, i + 1, | |
418 | USB_PORT_FEAT_C_ENABLE); | |
419 | ||
420 | /* EM interference sometimes causes bad shielded USB | |
421 | * devices to be shutdown by the hub, this hack enables | |
422 | * them again. Works at least with mouse driver */ | |
423 | if (!(portstatus & USB_PORT_STAT_ENABLE) && | |
424 | (portstatus & USB_PORT_STAT_CONNECTION) && | |
425 | ((dev->children[i]))) { | |
426 | USB_HUB_PRINTF("already running port %i " \ | |
427 | "disabled by hub (EMI?), " \ | |
428 | "re-enabling...\n", i + 1); | |
429 | usb_hub_port_connect_change(dev, i); | |
430 | } | |
431 | } | |
432 | if (portstatus & USB_PORT_STAT_SUSPEND) { | |
433 | USB_HUB_PRINTF("port %d suspend change\n", i + 1); | |
434 | usb_clear_port_feature(dev, i + 1, | |
435 | USB_PORT_FEAT_SUSPEND); | |
436 | } | |
437 | ||
438 | if (portchange & USB_PORT_STAT_C_OVERCURRENT) { | |
439 | USB_HUB_PRINTF("port %d over-current change\n", i + 1); | |
440 | usb_clear_port_feature(dev, i + 1, | |
441 | USB_PORT_FEAT_C_OVER_CURRENT); | |
442 | usb_hub_power_on(hub); | |
443 | } | |
444 | ||
445 | if (portchange & USB_PORT_STAT_C_RESET) { | |
446 | USB_HUB_PRINTF("port %d reset change\n", i + 1); | |
447 | usb_clear_port_feature(dev, i + 1, | |
448 | USB_PORT_FEAT_C_RESET); | |
449 | } | |
450 | } /* end for i all ports */ | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
455 | int usb_hub_probe(struct usb_device *dev, int ifnum) | |
456 | { | |
457 | struct usb_interface *iface; | |
458 | struct usb_endpoint_descriptor *ep; | |
459 | int ret; | |
460 | ||
461 | iface = &dev->config.if_desc[ifnum]; | |
462 | /* Is it a hub? */ | |
463 | if (iface->desc.bInterfaceClass != USB_CLASS_HUB) | |
464 | return 0; | |
465 | /* Some hubs have a subclass of 1, which AFAICT according to the */ | |
466 | /* specs is not defined, but it works */ | |
467 | if ((iface->desc.bInterfaceSubClass != 0) && | |
468 | (iface->desc.bInterfaceSubClass != 1)) | |
469 | return 0; | |
470 | /* Multiple endpoints? What kind of mutant ninja-hub is this? */ | |
471 | if (iface->desc.bNumEndpoints != 1) | |
472 | return 0; | |
473 | ep = &iface->ep_desc[0]; | |
474 | /* Output endpoint? Curiousier and curiousier.. */ | |
475 | if (!(ep->bEndpointAddress & USB_DIR_IN)) | |
476 | return 0; | |
477 | /* If it's not an interrupt endpoint, we'd better punt! */ | |
478 | if ((ep->bmAttributes & 3) != 3) | |
479 | return 0; | |
480 | /* We found a hub */ | |
481 | USB_HUB_PRINTF("USB hub found\n"); | |
482 | ret = usb_hub_configure(dev); | |
483 | return ret; | |
484 | } |