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Commit | Line | Data |
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37fb59d3 GH |
1 | #include "usb.h" |
2 | #include "usb-desc.h" | |
3 | #include "trace.h" | |
4 | ||
5 | /* ------------------------------------------------------------------ */ | |
6 | ||
7 | static uint8_t usb_lo(uint16_t val) | |
8 | { | |
9 | return val & 0xff; | |
10 | } | |
11 | ||
12 | static uint8_t usb_hi(uint16_t val) | |
13 | { | |
14 | return (val >> 8) & 0xff; | |
15 | } | |
16 | ||
17 | int usb_desc_device(const USBDescID *id, const USBDescDevice *dev, | |
18 | uint8_t *dest, size_t len) | |
19 | { | |
20 | uint8_t bLength = 0x12; | |
21 | ||
22 | if (len < bLength) { | |
23 | return -1; | |
24 | } | |
25 | ||
26 | dest[0x00] = bLength; | |
27 | dest[0x01] = USB_DT_DEVICE; | |
28 | ||
29 | dest[0x02] = usb_lo(dev->bcdUSB); | |
30 | dest[0x03] = usb_hi(dev->bcdUSB); | |
31 | dest[0x04] = dev->bDeviceClass; | |
32 | dest[0x05] = dev->bDeviceSubClass; | |
33 | dest[0x06] = dev->bDeviceProtocol; | |
34 | dest[0x07] = dev->bMaxPacketSize0; | |
35 | ||
36 | dest[0x08] = usb_lo(id->idVendor); | |
37 | dest[0x09] = usb_hi(id->idVendor); | |
38 | dest[0x0a] = usb_lo(id->idProduct); | |
39 | dest[0x0b] = usb_hi(id->idProduct); | |
40 | dest[0x0c] = usb_lo(id->bcdDevice); | |
41 | dest[0x0d] = usb_hi(id->bcdDevice); | |
42 | dest[0x0e] = id->iManufacturer; | |
43 | dest[0x0f] = id->iProduct; | |
44 | dest[0x10] = id->iSerialNumber; | |
45 | ||
46 | dest[0x11] = dev->bNumConfigurations; | |
47 | ||
48 | return bLength; | |
49 | } | |
50 | ||
25620cba GH |
51 | int usb_desc_device_qualifier(const USBDescDevice *dev, |
52 | uint8_t *dest, size_t len) | |
53 | { | |
54 | uint8_t bLength = 0x0a; | |
55 | ||
56 | if (len < bLength) { | |
57 | return -1; | |
58 | } | |
59 | ||
60 | dest[0x00] = bLength; | |
61 | dest[0x01] = USB_DT_DEVICE_QUALIFIER; | |
62 | ||
63 | dest[0x02] = usb_lo(dev->bcdUSB); | |
64 | dest[0x03] = usb_hi(dev->bcdUSB); | |
65 | dest[0x04] = dev->bDeviceClass; | |
66 | dest[0x05] = dev->bDeviceSubClass; | |
67 | dest[0x06] = dev->bDeviceProtocol; | |
68 | dest[0x07] = dev->bMaxPacketSize0; | |
69 | dest[0x08] = dev->bNumConfigurations; | |
70 | dest[0x09] = 0; /* reserved */ | |
71 | ||
72 | return bLength; | |
73 | } | |
74 | ||
37fb59d3 GH |
75 | int usb_desc_config(const USBDescConfig *conf, uint8_t *dest, size_t len) |
76 | { | |
77 | uint8_t bLength = 0x09; | |
78 | uint16_t wTotalLength = 0; | |
fef13fa8 | 79 | int i, rc; |
37fb59d3 GH |
80 | |
81 | if (len < bLength) { | |
82 | return -1; | |
83 | } | |
84 | ||
85 | dest[0x00] = bLength; | |
86 | dest[0x01] = USB_DT_CONFIG; | |
87 | dest[0x04] = conf->bNumInterfaces; | |
88 | dest[0x05] = conf->bConfigurationValue; | |
89 | dest[0x06] = conf->iConfiguration; | |
90 | dest[0x07] = conf->bmAttributes; | |
91 | dest[0x08] = conf->bMaxPower; | |
92 | wTotalLength += bLength; | |
93 | ||
6e625fc7 BH |
94 | /* handle grouped interfaces if any*/ |
95 | for (i = 0; i < conf->nif_groups; i++) { | |
96 | rc = usb_desc_iface_group(&(conf->if_groups[i]), | |
97 | dest + wTotalLength, | |
98 | len - wTotalLength); | |
99 | if (rc < 0) { | |
100 | return rc; | |
101 | } | |
102 | wTotalLength += rc; | |
103 | } | |
104 | ||
105 | /* handle normal (ungrouped / no IAD) interfaces if any */ | |
fef13fa8 | 106 | for (i = 0; i < conf->nif; i++) { |
37fb59d3 GH |
107 | rc = usb_desc_iface(conf->ifs + i, dest + wTotalLength, len - wTotalLength); |
108 | if (rc < 0) { | |
109 | return rc; | |
110 | } | |
111 | wTotalLength += rc; | |
112 | } | |
113 | ||
114 | dest[0x02] = usb_lo(wTotalLength); | |
115 | dest[0x03] = usb_hi(wTotalLength); | |
116 | return wTotalLength; | |
117 | } | |
118 | ||
6e625fc7 BH |
119 | int usb_desc_iface_group(const USBDescIfaceAssoc *iad, uint8_t *dest, |
120 | size_t len) | |
121 | { | |
122 | int pos = 0; | |
123 | int i = 0; | |
124 | ||
125 | /* handle interface association descriptor */ | |
126 | uint8_t bLength = 0x08; | |
127 | ||
128 | if (len < bLength) { | |
129 | return -1; | |
130 | } | |
131 | ||
132 | dest[0x00] = bLength; | |
133 | dest[0x01] = USB_DT_INTERFACE_ASSOC; | |
134 | dest[0x02] = iad->bFirstInterface; | |
135 | dest[0x03] = iad->bInterfaceCount; | |
136 | dest[0x04] = iad->bFunctionClass; | |
137 | dest[0x05] = iad->bFunctionSubClass; | |
138 | dest[0x06] = iad->bFunctionProtocol; | |
139 | dest[0x07] = iad->iFunction; | |
140 | pos += bLength; | |
141 | ||
142 | /* handle associated interfaces in this group */ | |
143 | for (i = 0; i < iad->nif; i++) { | |
144 | int rc = usb_desc_iface(&(iad->ifs[i]), dest + pos, len - pos); | |
145 | if (rc < 0) { | |
146 | return rc; | |
147 | } | |
148 | pos += rc; | |
149 | } | |
150 | ||
151 | return pos; | |
152 | } | |
153 | ||
37fb59d3 GH |
154 | int usb_desc_iface(const USBDescIface *iface, uint8_t *dest, size_t len) |
155 | { | |
156 | uint8_t bLength = 0x09; | |
157 | int i, rc, pos = 0; | |
158 | ||
159 | if (len < bLength) { | |
160 | return -1; | |
161 | } | |
162 | ||
163 | dest[0x00] = bLength; | |
164 | dest[0x01] = USB_DT_INTERFACE; | |
165 | dest[0x02] = iface->bInterfaceNumber; | |
166 | dest[0x03] = iface->bAlternateSetting; | |
167 | dest[0x04] = iface->bNumEndpoints; | |
168 | dest[0x05] = iface->bInterfaceClass; | |
169 | dest[0x06] = iface->bInterfaceSubClass; | |
170 | dest[0x07] = iface->bInterfaceProtocol; | |
171 | dest[0x08] = iface->iInterface; | |
172 | pos += bLength; | |
173 | ||
174 | for (i = 0; i < iface->ndesc; i++) { | |
175 | rc = usb_desc_other(iface->descs + i, dest + pos, len - pos); | |
176 | if (rc < 0) { | |
177 | return rc; | |
178 | } | |
179 | pos += rc; | |
180 | } | |
181 | ||
182 | for (i = 0; i < iface->bNumEndpoints; i++) { | |
183 | rc = usb_desc_endpoint(iface->eps + i, dest + pos, len - pos); | |
184 | if (rc < 0) { | |
185 | return rc; | |
186 | } | |
187 | pos += rc; | |
188 | } | |
189 | ||
190 | return pos; | |
191 | } | |
192 | ||
193 | int usb_desc_endpoint(const USBDescEndpoint *ep, uint8_t *dest, size_t len) | |
194 | { | |
cc5f1395 GH |
195 | uint8_t bLength = ep->is_audio ? 0x09 : 0x07; |
196 | uint8_t extralen = ep->extra ? ep->extra[0] : 0; | |
37fb59d3 | 197 | |
cc5f1395 | 198 | if (len < bLength + extralen) { |
37fb59d3 GH |
199 | return -1; |
200 | } | |
201 | ||
202 | dest[0x00] = bLength; | |
203 | dest[0x01] = USB_DT_ENDPOINT; | |
204 | dest[0x02] = ep->bEndpointAddress; | |
205 | dest[0x03] = ep->bmAttributes; | |
206 | dest[0x04] = usb_lo(ep->wMaxPacketSize); | |
207 | dest[0x05] = usb_hi(ep->wMaxPacketSize); | |
208 | dest[0x06] = ep->bInterval; | |
cc5f1395 GH |
209 | if (ep->is_audio) { |
210 | dest[0x07] = ep->bRefresh; | |
211 | dest[0x08] = ep->bSynchAddress; | |
212 | } | |
213 | if (ep->extra) { | |
214 | memcpy(dest + bLength, ep->extra, extralen); | |
215 | } | |
37fb59d3 | 216 | |
cc5f1395 | 217 | return bLength + extralen; |
37fb59d3 GH |
218 | } |
219 | ||
220 | int usb_desc_other(const USBDescOther *desc, uint8_t *dest, size_t len) | |
221 | { | |
222 | int bLength = desc->length ? desc->length : desc->data[0]; | |
223 | ||
224 | if (len < bLength) { | |
225 | return -1; | |
226 | } | |
227 | ||
228 | memcpy(dest, desc->data, bLength); | |
229 | return bLength; | |
230 | } | |
231 | ||
132a3f55 GH |
232 | /* ------------------------------------------------------------------ */ |
233 | ||
83a53bbc GH |
234 | static void usb_desc_ep_init(USBDevice *dev) |
235 | { | |
236 | const USBDescIface *iface; | |
237 | int i, e, pid, ep; | |
238 | ||
239 | usb_ep_init(dev); | |
240 | for (i = 0; i < dev->ninterfaces; i++) { | |
241 | iface = dev->ifaces[i]; | |
242 | if (iface == NULL) { | |
243 | continue; | |
244 | } | |
245 | for (e = 0; e < iface->bNumEndpoints; e++) { | |
246 | pid = (iface->eps[e].bEndpointAddress & USB_DIR_IN) ? | |
247 | USB_TOKEN_IN : USB_TOKEN_OUT; | |
248 | ep = iface->eps[e].bEndpointAddress & 0x0f; | |
249 | usb_ep_set_type(dev, pid, ep, iface->eps[e].bmAttributes & 0x03); | |
250 | usb_ep_set_ifnum(dev, pid, ep, iface->bInterfaceNumber); | |
f003397c GH |
251 | usb_ep_set_max_packet_size(dev, pid, ep, |
252 | iface->eps[e].wMaxPacketSize); | |
83a53bbc GH |
253 | } |
254 | } | |
255 | } | |
256 | ||
1de14d43 GH |
257 | static const USBDescIface *usb_desc_find_interface(USBDevice *dev, |
258 | int nif, int alt) | |
259 | { | |
260 | const USBDescIface *iface; | |
261 | int g, i; | |
262 | ||
263 | if (!dev->config) { | |
264 | return NULL; | |
265 | } | |
266 | for (g = 0; g < dev->config->nif_groups; g++) { | |
267 | for (i = 0; i < dev->config->if_groups[g].nif; i++) { | |
268 | iface = &dev->config->if_groups[g].ifs[i]; | |
269 | if (iface->bInterfaceNumber == nif && | |
270 | iface->bAlternateSetting == alt) { | |
271 | return iface; | |
272 | } | |
273 | } | |
274 | } | |
275 | for (i = 0; i < dev->config->nif; i++) { | |
276 | iface = &dev->config->ifs[i]; | |
277 | if (iface->bInterfaceNumber == nif && | |
278 | iface->bAlternateSetting == alt) { | |
279 | return iface; | |
280 | } | |
281 | } | |
282 | return NULL; | |
283 | } | |
284 | ||
285 | static int usb_desc_set_interface(USBDevice *dev, int index, int value) | |
286 | { | |
287 | const USBDescIface *iface; | |
288 | int old; | |
289 | ||
290 | iface = usb_desc_find_interface(dev, index, value); | |
291 | if (iface == NULL) { | |
292 | return -1; | |
293 | } | |
294 | ||
295 | old = dev->altsetting[index]; | |
296 | dev->altsetting[index] = value; | |
297 | dev->ifaces[index] = iface; | |
83a53bbc | 298 | usb_desc_ep_init(dev); |
1de14d43 | 299 | |
62aed765 AL |
300 | if (old != value) { |
301 | usb_device_set_interface(dev, index, old, value); | |
1de14d43 GH |
302 | } |
303 | return 0; | |
304 | } | |
305 | ||
65360511 GH |
306 | static int usb_desc_set_config(USBDevice *dev, int value) |
307 | { | |
308 | int i; | |
309 | ||
310 | if (value == 0) { | |
311 | dev->configuration = 0; | |
312 | dev->ninterfaces = 0; | |
313 | dev->config = NULL; | |
314 | } else { | |
315 | for (i = 0; i < dev->device->bNumConfigurations; i++) { | |
316 | if (dev->device->confs[i].bConfigurationValue == value) { | |
317 | dev->configuration = value; | |
318 | dev->ninterfaces = dev->device->confs[i].bNumInterfaces; | |
319 | dev->config = dev->device->confs + i; | |
1de14d43 | 320 | assert(dev->ninterfaces <= USB_MAX_INTERFACES); |
65360511 GH |
321 | } |
322 | } | |
323 | if (i < dev->device->bNumConfigurations) { | |
324 | return -1; | |
325 | } | |
326 | } | |
1de14d43 GH |
327 | |
328 | for (i = 0; i < dev->ninterfaces; i++) { | |
329 | usb_desc_set_interface(dev, i, 0); | |
330 | } | |
331 | for (; i < USB_MAX_INTERFACES; i++) { | |
332 | dev->altsetting[i] = 0; | |
333 | dev->ifaces[i] = NULL; | |
334 | } | |
335 | ||
65360511 GH |
336 | return 0; |
337 | } | |
338 | ||
32d41919 | 339 | static void usb_desc_setdefaults(USBDevice *dev) |
a980a065 | 340 | { |
62aed765 | 341 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
a980a065 GH |
342 | |
343 | assert(desc != NULL); | |
32d41919 GH |
344 | switch (dev->speed) { |
345 | case USB_SPEED_LOW: | |
346 | case USB_SPEED_FULL: | |
347 | dev->device = desc->full; | |
348 | break; | |
349 | case USB_SPEED_HIGH: | |
350 | dev->device = desc->high; | |
351 | break; | |
352 | } | |
65360511 | 353 | usb_desc_set_config(dev, 0); |
a980a065 GH |
354 | } |
355 | ||
32d41919 GH |
356 | void usb_desc_init(USBDevice *dev) |
357 | { | |
62aed765 | 358 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
ba3f9bfb HG |
359 | |
360 | assert(desc != NULL); | |
32d41919 | 361 | dev->speed = USB_SPEED_FULL; |
ba3f9bfb HG |
362 | dev->speedmask = 0; |
363 | if (desc->full) { | |
364 | dev->speedmask |= USB_SPEED_MASK_FULL; | |
365 | } | |
366 | if (desc->high) { | |
367 | dev->speedmask |= USB_SPEED_MASK_HIGH; | |
368 | } | |
32d41919 GH |
369 | usb_desc_setdefaults(dev); |
370 | } | |
371 | ||
372 | void usb_desc_attach(USBDevice *dev) | |
373 | { | |
62aed765 | 374 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
32d41919 GH |
375 | |
376 | assert(desc != NULL); | |
377 | if (desc->high && (dev->port->speedmask & USB_SPEED_MASK_HIGH)) { | |
378 | dev->speed = USB_SPEED_HIGH; | |
379 | } else if (desc->full && (dev->port->speedmask & USB_SPEED_MASK_FULL)) { | |
380 | dev->speed = USB_SPEED_FULL; | |
381 | } else { | |
382 | fprintf(stderr, "usb: port/device speed mismatch for \"%s\"\n", | |
62aed765 | 383 | usb_device_get_product_desc(dev)); |
32d41919 GH |
384 | return; |
385 | } | |
386 | usb_desc_setdefaults(dev); | |
387 | } | |
388 | ||
132a3f55 GH |
389 | void usb_desc_set_string(USBDevice *dev, uint8_t index, const char *str) |
390 | { | |
391 | USBDescString *s; | |
392 | ||
393 | QLIST_FOREACH(s, &dev->strings, next) { | |
394 | if (s->index == index) { | |
395 | break; | |
396 | } | |
397 | } | |
398 | if (s == NULL) { | |
7267c094 | 399 | s = g_malloc0(sizeof(*s)); |
132a3f55 GH |
400 | s->index = index; |
401 | QLIST_INSERT_HEAD(&dev->strings, s, next); | |
402 | } | |
7267c094 AL |
403 | g_free(s->str); |
404 | s->str = g_strdup(str); | |
132a3f55 GH |
405 | } |
406 | ||
407 | const char *usb_desc_get_string(USBDevice *dev, uint8_t index) | |
408 | { | |
409 | USBDescString *s; | |
410 | ||
411 | QLIST_FOREACH(s, &dev->strings, next) { | |
412 | if (s->index == index) { | |
413 | return s->str; | |
414 | } | |
415 | } | |
416 | return NULL; | |
417 | } | |
418 | ||
419 | int usb_desc_string(USBDevice *dev, int index, uint8_t *dest, size_t len) | |
37fb59d3 GH |
420 | { |
421 | uint8_t bLength, pos, i; | |
132a3f55 | 422 | const char *str; |
37fb59d3 GH |
423 | |
424 | if (len < 4) { | |
425 | return -1; | |
426 | } | |
427 | ||
428 | if (index == 0) { | |
429 | /* language ids */ | |
430 | dest[0] = 4; | |
431 | dest[1] = USB_DT_STRING; | |
432 | dest[2] = 0x09; | |
433 | dest[3] = 0x04; | |
434 | return 4; | |
435 | } | |
436 | ||
132a3f55 GH |
437 | str = usb_desc_get_string(dev, index); |
438 | if (str == NULL) { | |
62aed765 | 439 | str = usb_device_get_usb_desc(dev)->str[index]; |
132a3f55 GH |
440 | if (str == NULL) { |
441 | return 0; | |
442 | } | |
37fb59d3 | 443 | } |
132a3f55 GH |
444 | |
445 | bLength = strlen(str) * 2 + 2; | |
37fb59d3 GH |
446 | dest[0] = bLength; |
447 | dest[1] = USB_DT_STRING; | |
448 | i = 0; pos = 2; | |
449 | while (pos+1 < bLength && pos+1 < len) { | |
132a3f55 | 450 | dest[pos++] = str[i++]; |
37fb59d3 GH |
451 | dest[pos++] = 0; |
452 | } | |
453 | return pos; | |
454 | } | |
455 | ||
37fb59d3 GH |
456 | int usb_desc_get_descriptor(USBDevice *dev, int value, uint8_t *dest, size_t len) |
457 | { | |
62aed765 | 458 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
25620cba | 459 | const USBDescDevice *other_dev; |
37fb59d3 GH |
460 | uint8_t buf[256]; |
461 | uint8_t type = value >> 8; | |
462 | uint8_t index = value & 0xff; | |
463 | int ret = -1; | |
464 | ||
25620cba | 465 | if (dev->speed == USB_SPEED_HIGH) { |
62aed765 | 466 | other_dev = usb_device_get_usb_desc(dev)->full; |
25620cba | 467 | } else { |
62aed765 | 468 | other_dev = usb_device_get_usb_desc(dev)->high; |
25620cba GH |
469 | } |
470 | ||
37fb59d3 GH |
471 | switch(type) { |
472 | case USB_DT_DEVICE: | |
a980a065 | 473 | ret = usb_desc_device(&desc->id, dev->device, buf, sizeof(buf)); |
37fb59d3 GH |
474 | trace_usb_desc_device(dev->addr, len, ret); |
475 | break; | |
476 | case USB_DT_CONFIG: | |
a980a065 GH |
477 | if (index < dev->device->bNumConfigurations) { |
478 | ret = usb_desc_config(dev->device->confs + index, buf, sizeof(buf)); | |
37fb59d3 GH |
479 | } |
480 | trace_usb_desc_config(dev->addr, index, len, ret); | |
481 | break; | |
482 | case USB_DT_STRING: | |
132a3f55 | 483 | ret = usb_desc_string(dev, index, buf, sizeof(buf)); |
37fb59d3 GH |
484 | trace_usb_desc_string(dev->addr, index, len, ret); |
485 | break; | |
25620cba GH |
486 | |
487 | case USB_DT_DEVICE_QUALIFIER: | |
488 | if (other_dev != NULL) { | |
489 | ret = usb_desc_device_qualifier(other_dev, buf, sizeof(buf)); | |
490 | } | |
491 | trace_usb_desc_device_qualifier(dev->addr, len, ret); | |
492 | break; | |
493 | case USB_DT_OTHER_SPEED_CONFIG: | |
494 | if (other_dev != NULL && index < other_dev->bNumConfigurations) { | |
495 | ret = usb_desc_config(other_dev->confs + index, buf, sizeof(buf)); | |
496 | buf[0x01] = USB_DT_OTHER_SPEED_CONFIG; | |
497 | } | |
498 | trace_usb_desc_other_speed_config(dev->addr, index, len, ret); | |
499 | break; | |
500 | ||
a7fb71d1 GH |
501 | case USB_DT_DEBUG: |
502 | /* ignore silently */ | |
503 | break; | |
504 | ||
37fb59d3 GH |
505 | default: |
506 | fprintf(stderr, "%s: %d unknown type %d (len %zd)\n", __FUNCTION__, | |
507 | dev->addr, type, len); | |
508 | break; | |
509 | } | |
510 | ||
511 | if (ret > 0) { | |
512 | if (ret > len) { | |
513 | ret = len; | |
514 | } | |
515 | memcpy(dest, buf, ret); | |
516 | } | |
517 | return ret; | |
518 | } | |
519 | ||
007fd62f HG |
520 | int usb_desc_handle_control(USBDevice *dev, USBPacket *p, |
521 | int request, int value, int index, int length, uint8_t *data) | |
37fb59d3 | 522 | { |
62aed765 | 523 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
65360511 | 524 | int ret = -1; |
37fb59d3 GH |
525 | |
526 | assert(desc != NULL); | |
527 | switch(request) { | |
41c6abbd GH |
528 | case DeviceOutRequest | USB_REQ_SET_ADDRESS: |
529 | dev->addr = value; | |
530 | trace_usb_set_addr(dev->addr); | |
531 | ret = 0; | |
532 | break; | |
533 | ||
37fb59d3 GH |
534 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: |
535 | ret = usb_desc_get_descriptor(dev, value, data, length); | |
536 | break; | |
a980a065 GH |
537 | |
538 | case DeviceRequest | USB_REQ_GET_CONFIGURATION: | |
539 | data[0] = dev->config->bConfigurationValue; | |
540 | ret = 1; | |
541 | break; | |
542 | case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: | |
65360511 | 543 | ret = usb_desc_set_config(dev, value); |
a980a065 GH |
544 | trace_usb_set_config(dev->addr, value, ret); |
545 | break; | |
ed5a83dd GH |
546 | |
547 | case DeviceRequest | USB_REQ_GET_STATUS: | |
548 | data[0] = 0; | |
549 | if (dev->config->bmAttributes & 0x40) { | |
550 | data[0] |= 1 << USB_DEVICE_SELF_POWERED; | |
551 | } | |
552 | if (dev->remote_wakeup) { | |
553 | data[0] |= 1 << USB_DEVICE_REMOTE_WAKEUP; | |
554 | } | |
555 | data[1] = 0x00; | |
556 | ret = 2; | |
557 | break; | |
558 | case DeviceOutRequest | USB_REQ_CLEAR_FEATURE: | |
559 | if (value == USB_DEVICE_REMOTE_WAKEUP) { | |
560 | dev->remote_wakeup = 0; | |
561 | ret = 0; | |
562 | } | |
563 | trace_usb_clear_device_feature(dev->addr, value, ret); | |
564 | break; | |
565 | case DeviceOutRequest | USB_REQ_SET_FEATURE: | |
566 | if (value == USB_DEVICE_REMOTE_WAKEUP) { | |
567 | dev->remote_wakeup = 1; | |
568 | ret = 0; | |
569 | } | |
570 | trace_usb_set_device_feature(dev->addr, value, ret); | |
571 | break; | |
1de14d43 GH |
572 | |
573 | case InterfaceRequest | USB_REQ_GET_INTERFACE: | |
574 | if (index < 0 || index >= dev->ninterfaces) { | |
575 | break; | |
576 | } | |
577 | data[0] = dev->altsetting[index]; | |
578 | ret = 1; | |
579 | break; | |
580 | case InterfaceOutRequest | USB_REQ_SET_INTERFACE: | |
581 | ret = usb_desc_set_interface(dev, index, value); | |
582 | trace_usb_set_interface(dev->addr, index, value, ret); | |
583 | break; | |
584 | ||
37fb59d3 GH |
585 | } |
586 | return ret; | |
587 | } |