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de31213f SG |
1 | /* |
2 | * (C) Copyright 2015 Google, Inc | |
3 | * Written by Simon Glass <sjg@chromium.org> | |
4 | * | |
0566e240 SG |
5 | * usb_match_device() modified from Linux kernel v4.0. |
6 | * | |
de31213f SG |
7 | * SPDX-License-Identifier: GPL-2.0+ |
8 | */ | |
9 | ||
10 | #include <common.h> | |
11 | #include <dm.h> | |
12 | #include <errno.h> | |
13 | #include <usb.h> | |
14 | #include <dm/device-internal.h> | |
15 | #include <dm/lists.h> | |
16 | #include <dm/root.h> | |
17 | #include <dm/uclass-internal.h> | |
18 | ||
19 | DECLARE_GLOBAL_DATA_PTR; | |
20 | ||
21 | extern bool usb_started; /* flag for the started/stopped USB status */ | |
22 | static bool asynch_allowed; | |
23 | ||
e253637b HG |
24 | struct usb_uclass_priv { |
25 | int companion_device_count; | |
26 | }; | |
27 | ||
de31213f SG |
28 | int usb_disable_asynch(int disable) |
29 | { | |
30 | int old_value = asynch_allowed; | |
31 | ||
32 | asynch_allowed = !disable; | |
33 | return old_value; | |
34 | } | |
35 | ||
36 | int submit_int_msg(struct usb_device *udev, unsigned long pipe, void *buffer, | |
37 | int length, int interval) | |
38 | { | |
39 | struct udevice *bus = udev->controller_dev; | |
40 | struct dm_usb_ops *ops = usb_get_ops(bus); | |
41 | ||
42 | if (!ops->interrupt) | |
43 | return -ENOSYS; | |
44 | ||
45 | return ops->interrupt(bus, udev, pipe, buffer, length, interval); | |
46 | } | |
47 | ||
48 | int submit_control_msg(struct usb_device *udev, unsigned long pipe, | |
49 | void *buffer, int length, struct devrequest *setup) | |
50 | { | |
51 | struct udevice *bus = udev->controller_dev; | |
52 | struct dm_usb_ops *ops = usb_get_ops(bus); | |
e253637b HG |
53 | struct usb_uclass_priv *uc_priv = bus->uclass->priv; |
54 | int err; | |
de31213f SG |
55 | |
56 | if (!ops->control) | |
57 | return -ENOSYS; | |
58 | ||
e253637b HG |
59 | err = ops->control(bus, udev, pipe, buffer, length, setup); |
60 | if (setup->request == USB_REQ_SET_FEATURE && | |
61 | setup->requesttype == USB_RT_PORT && | |
62 | setup->value == cpu_to_le16(USB_PORT_FEAT_RESET) && | |
63 | err == -ENXIO) { | |
64 | /* Device handed over to companion after port reset */ | |
65 | uc_priv->companion_device_count++; | |
66 | } | |
67 | ||
68 | return err; | |
de31213f SG |
69 | } |
70 | ||
71 | int submit_bulk_msg(struct usb_device *udev, unsigned long pipe, void *buffer, | |
72 | int length) | |
73 | { | |
74 | struct udevice *bus = udev->controller_dev; | |
75 | struct dm_usb_ops *ops = usb_get_ops(bus); | |
76 | ||
77 | if (!ops->bulk) | |
78 | return -ENOSYS; | |
79 | ||
80 | return ops->bulk(bus, udev, pipe, buffer, length); | |
81 | } | |
82 | ||
8a5f0665 HG |
83 | struct int_queue *create_int_queue(struct usb_device *udev, |
84 | unsigned long pipe, int queuesize, int elementsize, | |
85 | void *buffer, int interval) | |
86 | { | |
87 | struct udevice *bus = udev->controller_dev; | |
88 | struct dm_usb_ops *ops = usb_get_ops(bus); | |
89 | ||
90 | if (!ops->create_int_queue) | |
91 | return NULL; | |
92 | ||
93 | return ops->create_int_queue(bus, udev, pipe, queuesize, elementsize, | |
94 | buffer, interval); | |
95 | } | |
96 | ||
97 | void *poll_int_queue(struct usb_device *udev, struct int_queue *queue) | |
98 | { | |
99 | struct udevice *bus = udev->controller_dev; | |
100 | struct dm_usb_ops *ops = usb_get_ops(bus); | |
101 | ||
102 | if (!ops->poll_int_queue) | |
103 | return NULL; | |
104 | ||
105 | return ops->poll_int_queue(bus, udev, queue); | |
106 | } | |
107 | ||
108 | int destroy_int_queue(struct usb_device *udev, struct int_queue *queue) | |
109 | { | |
110 | struct udevice *bus = udev->controller_dev; | |
111 | struct dm_usb_ops *ops = usb_get_ops(bus); | |
112 | ||
113 | if (!ops->destroy_int_queue) | |
114 | return -ENOSYS; | |
115 | ||
116 | return ops->destroy_int_queue(bus, udev, queue); | |
117 | } | |
118 | ||
de31213f SG |
119 | int usb_alloc_device(struct usb_device *udev) |
120 | { | |
121 | struct udevice *bus = udev->controller_dev; | |
122 | struct dm_usb_ops *ops = usb_get_ops(bus); | |
123 | ||
124 | /* This is only requird by some controllers - current XHCI */ | |
125 | if (!ops->alloc_device) | |
126 | return 0; | |
127 | ||
128 | return ops->alloc_device(bus, udev); | |
129 | } | |
130 | ||
131 | int usb_stop(void) | |
132 | { | |
133 | struct udevice *bus; | |
134 | struct uclass *uc; | |
e253637b | 135 | struct usb_uclass_priv *uc_priv; |
de31213f SG |
136 | int err = 0, ret; |
137 | ||
138 | /* De-activate any devices that have been activated */ | |
139 | ret = uclass_get(UCLASS_USB, &uc); | |
140 | if (ret) | |
141 | return ret; | |
e253637b HG |
142 | |
143 | uc_priv = uc->priv; | |
144 | ||
de31213f SG |
145 | uclass_foreach_dev(bus, uc) { |
146 | ret = device_remove(bus); | |
147 | if (ret && !err) | |
148 | err = ret; | |
149 | } | |
150 | ||
095fdef0 SG |
151 | #ifdef CONFIG_SANDBOX |
152 | struct udevice *dev; | |
153 | ||
154 | /* Reset all enulation devices */ | |
155 | ret = uclass_get(UCLASS_USB_EMUL, &uc); | |
156 | if (ret) | |
157 | return ret; | |
158 | ||
159 | uclass_foreach_dev(dev, uc) | |
160 | usb_emul_reset(dev); | |
161 | #endif | |
de31213f SG |
162 | usb_stor_reset(); |
163 | usb_hub_reset(); | |
e253637b | 164 | uc_priv->companion_device_count = 0; |
de31213f SG |
165 | usb_started = 0; |
166 | ||
167 | return err; | |
168 | } | |
169 | ||
a24a0e91 | 170 | static void usb_scan_bus(struct udevice *bus, bool recurse) |
de31213f SG |
171 | { |
172 | struct usb_bus_priv *priv; | |
173 | struct udevice *dev; | |
174 | int ret; | |
175 | ||
176 | priv = dev_get_uclass_priv(bus); | |
177 | ||
178 | assert(recurse); /* TODO: Support non-recusive */ | |
179 | ||
a24a0e91 HG |
180 | printf("scanning bus %d for devices... ", bus->seq); |
181 | debug("\n"); | |
de31213f SG |
182 | ret = usb_scan_device(bus, 0, USB_SPEED_FULL, &dev); |
183 | if (ret) | |
a24a0e91 HG |
184 | printf("failed, error %d\n", ret); |
185 | else if (priv->next_addr == 0) | |
186 | printf("No USB Device found\n"); | |
187 | else | |
188 | printf("%d USB Device(s) found\n", priv->next_addr); | |
de31213f SG |
189 | } |
190 | ||
191 | int usb_init(void) | |
192 | { | |
193 | int controllers_initialized = 0; | |
e253637b | 194 | struct usb_uclass_priv *uc_priv; |
b6de4d10 | 195 | struct usb_bus_priv *priv; |
de31213f SG |
196 | struct udevice *bus; |
197 | struct uclass *uc; | |
198 | int count = 0; | |
199 | int ret; | |
200 | ||
201 | asynch_allowed = 1; | |
202 | usb_hub_reset(); | |
203 | ||
204 | ret = uclass_get(UCLASS_USB, &uc); | |
205 | if (ret) | |
206 | return ret; | |
207 | ||
e253637b HG |
208 | uc_priv = uc->priv; |
209 | ||
de31213f SG |
210 | uclass_foreach_dev(bus, uc) { |
211 | /* init low_level USB */ | |
134692af | 212 | printf("USB%d: ", count); |
de31213f | 213 | count++; |
de31213f SG |
214 | ret = device_probe(bus); |
215 | if (ret == -ENODEV) { /* No such device. */ | |
216 | puts("Port not available.\n"); | |
217 | controllers_initialized++; | |
218 | continue; | |
219 | } | |
220 | ||
221 | if (ret) { /* Other error. */ | |
222 | printf("probe failed, error %d\n", ret); | |
223 | continue; | |
224 | } | |
de31213f | 225 | controllers_initialized++; |
de31213f SG |
226 | usb_started = true; |
227 | } | |
228 | ||
b6de4d10 HG |
229 | /* |
230 | * lowlevel init done, now scan the bus for devices i.e. search HUBs | |
231 | * and configure them, first scan primary controllers. | |
232 | */ | |
233 | uclass_foreach_dev(bus, uc) { | |
234 | if (!device_active(bus)) | |
235 | continue; | |
236 | ||
237 | priv = dev_get_uclass_priv(bus); | |
238 | if (!priv->companion) | |
239 | usb_scan_bus(bus, true); | |
240 | } | |
241 | ||
242 | /* | |
243 | * Now that the primary controllers have been scanned and have handed | |
244 | * over any devices they do not understand to their companions, scan | |
e253637b | 245 | * the companions if necessary. |
b6de4d10 | 246 | */ |
e253637b HG |
247 | if (uc_priv->companion_device_count) { |
248 | uclass_foreach_dev(bus, uc) { | |
249 | if (!device_active(bus)) | |
250 | continue; | |
b6de4d10 | 251 | |
e253637b HG |
252 | priv = dev_get_uclass_priv(bus); |
253 | if (priv->companion) | |
254 | usb_scan_bus(bus, true); | |
255 | } | |
b6de4d10 HG |
256 | } |
257 | ||
de31213f SG |
258 | debug("scan end\n"); |
259 | /* if we were not able to find at least one working bus, bail out */ | |
260 | if (!count) | |
261 | printf("No controllers found\n"); | |
262 | else if (controllers_initialized == 0) | |
263 | printf("USB error: all controllers failed lowlevel init\n"); | |
264 | ||
265 | return usb_started ? 0 : -1; | |
266 | } | |
267 | ||
268 | int usb_reset_root_port(void) | |
269 | { | |
270 | return -ENOSYS; | |
271 | } | |
272 | ||
273 | static struct usb_device *find_child_devnum(struct udevice *parent, int devnum) | |
274 | { | |
275 | struct usb_device *udev; | |
276 | struct udevice *dev; | |
277 | ||
278 | if (!device_active(parent)) | |
279 | return NULL; | |
280 | udev = dev_get_parentdata(parent); | |
281 | if (udev->devnum == devnum) | |
282 | return udev; | |
283 | ||
284 | for (device_find_first_child(parent, &dev); | |
285 | dev; | |
286 | device_find_next_child(&dev)) { | |
287 | udev = find_child_devnum(dev, devnum); | |
288 | if (udev) | |
289 | return udev; | |
290 | } | |
291 | ||
292 | return NULL; | |
293 | } | |
294 | ||
295 | struct usb_device *usb_get_dev_index(struct udevice *bus, int index) | |
296 | { | |
297 | struct udevice *hub; | |
298 | int devnum = index + 1; /* Addresses are allocated from 1 on USB */ | |
299 | ||
300 | device_find_first_child(bus, &hub); | |
301 | if (device_get_uclass_id(hub) == UCLASS_USB_HUB) | |
302 | return find_child_devnum(hub, devnum); | |
303 | ||
304 | return NULL; | |
305 | } | |
306 | ||
307 | int usb_post_bind(struct udevice *dev) | |
308 | { | |
309 | /* Scan the bus for devices */ | |
310 | return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false); | |
311 | } | |
312 | ||
fbeceb26 SG |
313 | int usb_setup_ehci_gadget(struct ehci_ctrl **ctlrp) |
314 | { | |
315 | struct usb_platdata *plat; | |
316 | struct udevice *dev; | |
317 | int ret; | |
318 | ||
319 | /* Find the old device and remove it */ | |
320 | ret = uclass_find_device_by_seq(UCLASS_USB, 0, true, &dev); | |
321 | if (ret) | |
322 | return ret; | |
323 | ret = device_remove(dev); | |
324 | if (ret) | |
325 | return ret; | |
326 | ||
327 | plat = dev_get_platdata(dev); | |
328 | plat->init_type = USB_INIT_DEVICE; | |
329 | ret = device_probe(dev); | |
330 | if (ret) | |
331 | return ret; | |
332 | *ctlrp = dev_get_priv(dev); | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
0566e240 SG |
337 | /* returns 0 if no match, 1 if match */ |
338 | int usb_match_device(const struct usb_device_descriptor *desc, | |
339 | const struct usb_device_id *id) | |
340 | { | |
341 | if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) && | |
342 | id->idVendor != le16_to_cpu(desc->idVendor)) | |
343 | return 0; | |
344 | ||
345 | if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) && | |
346 | id->idProduct != le16_to_cpu(desc->idProduct)) | |
347 | return 0; | |
348 | ||
349 | /* No need to test id->bcdDevice_lo != 0, since 0 is never | |
350 | greater than any unsigned number. */ | |
351 | if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) && | |
352 | (id->bcdDevice_lo > le16_to_cpu(desc->bcdDevice))) | |
353 | return 0; | |
354 | ||
355 | if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) && | |
356 | (id->bcdDevice_hi < le16_to_cpu(desc->bcdDevice))) | |
357 | return 0; | |
358 | ||
359 | if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) && | |
360 | (id->bDeviceClass != desc->bDeviceClass)) | |
361 | return 0; | |
362 | ||
363 | if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) && | |
364 | (id->bDeviceSubClass != desc->bDeviceSubClass)) | |
365 | return 0; | |
366 | ||
367 | if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) && | |
368 | (id->bDeviceProtocol != desc->bDeviceProtocol)) | |
369 | return 0; | |
370 | ||
371 | return 1; | |
372 | } | |
373 | ||
374 | /* returns 0 if no match, 1 if match */ | |
375 | int usb_match_one_id_intf(const struct usb_device_descriptor *desc, | |
376 | const struct usb_interface_descriptor *int_desc, | |
377 | const struct usb_device_id *id) | |
378 | { | |
379 | /* The interface class, subclass, protocol and number should never be | |
380 | * checked for a match if the device class is Vendor Specific, | |
381 | * unless the match record specifies the Vendor ID. */ | |
382 | if (desc->bDeviceClass == USB_CLASS_VENDOR_SPEC && | |
383 | !(id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) && | |
384 | (id->match_flags & (USB_DEVICE_ID_MATCH_INT_CLASS | | |
385 | USB_DEVICE_ID_MATCH_INT_SUBCLASS | | |
386 | USB_DEVICE_ID_MATCH_INT_PROTOCOL | | |
387 | USB_DEVICE_ID_MATCH_INT_NUMBER))) | |
388 | return 0; | |
389 | ||
390 | if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_CLASS) && | |
391 | (id->bInterfaceClass != int_desc->bInterfaceClass)) | |
392 | return 0; | |
393 | ||
394 | if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_SUBCLASS) && | |
395 | (id->bInterfaceSubClass != int_desc->bInterfaceSubClass)) | |
396 | return 0; | |
397 | ||
398 | if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_PROTOCOL) && | |
399 | (id->bInterfaceProtocol != int_desc->bInterfaceProtocol)) | |
400 | return 0; | |
401 | ||
402 | if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER) && | |
403 | (id->bInterfaceNumber != int_desc->bInterfaceNumber)) | |
404 | return 0; | |
405 | ||
406 | return 1; | |
407 | } | |
408 | ||
409 | /* returns 0 if no match, 1 if match */ | |
410 | int usb_match_one_id(struct usb_device_descriptor *desc, | |
411 | struct usb_interface_descriptor *int_desc, | |
412 | const struct usb_device_id *id) | |
413 | { | |
414 | if (!usb_match_device(desc, id)) | |
415 | return 0; | |
416 | ||
417 | return usb_match_one_id_intf(desc, int_desc, id); | |
418 | } | |
419 | ||
420 | /** | |
421 | * usb_find_and_bind_driver() - Find and bind the right USB driver | |
422 | * | |
423 | * This only looks at certain fields in the descriptor. | |
424 | */ | |
425 | static int usb_find_and_bind_driver(struct udevice *parent, | |
426 | struct usb_device_descriptor *desc, | |
427 | struct usb_interface_descriptor *iface, | |
428 | int bus_seq, int devnum, | |
429 | struct udevice **devp) | |
430 | { | |
431 | struct usb_driver_entry *start, *entry; | |
432 | int n_ents; | |
433 | int ret; | |
434 | char name[30], *str; | |
435 | ||
436 | *devp = NULL; | |
437 | debug("%s: Searching for driver\n", __func__); | |
438 | start = ll_entry_start(struct usb_driver_entry, usb_driver_entry); | |
439 | n_ents = ll_entry_count(struct usb_driver_entry, usb_driver_entry); | |
440 | for (entry = start; entry != start + n_ents; entry++) { | |
441 | const struct usb_device_id *id; | |
442 | struct udevice *dev; | |
443 | const struct driver *drv; | |
444 | struct usb_dev_platdata *plat; | |
445 | ||
446 | for (id = entry->match; id->match_flags; id++) { | |
447 | if (!usb_match_one_id(desc, iface, id)) | |
448 | continue; | |
449 | ||
450 | drv = entry->driver; | |
451 | /* | |
452 | * We could pass the descriptor to the driver as | |
453 | * platdata (instead of NULL) and allow its bind() | |
454 | * method to return -ENOENT if it doesn't support this | |
455 | * device. That way we could continue the search to | |
456 | * find another driver. For now this doesn't seem | |
457 | * necesssary, so just bind the first match. | |
458 | */ | |
459 | ret = device_bind(parent, drv, drv->name, NULL, -1, | |
460 | &dev); | |
461 | if (ret) | |
462 | goto error; | |
463 | debug("%s: Match found: %s\n", __func__, drv->name); | |
464 | dev->driver_data = id->driver_info; | |
465 | plat = dev_get_parent_platdata(dev); | |
466 | plat->id = *id; | |
467 | *devp = dev; | |
468 | return 0; | |
469 | } | |
470 | } | |
471 | ||
449230f0 SG |
472 | /* Bind a generic driver so that the device can be used */ |
473 | snprintf(name, sizeof(name), "generic_bus_%x_dev_%x", bus_seq, devnum); | |
474 | str = strdup(name); | |
475 | if (!str) | |
476 | return -ENOMEM; | |
477 | ret = device_bind_driver(parent, "usb_dev_generic_drv", str, devp); | |
478 | ||
0566e240 SG |
479 | error: |
480 | debug("%s: No match found: %d\n", __func__, ret); | |
481 | return ret; | |
482 | } | |
483 | ||
484 | /** | |
485 | * usb_find_child() - Find an existing device which matches our needs | |
486 | * | |
487 | * | |
488 | */ | |
489 | static int usb_find_child(struct udevice *parent, | |
490 | struct usb_device_descriptor *desc, | |
491 | struct usb_interface_descriptor *iface, | |
492 | struct udevice **devp) | |
493 | { | |
494 | struct udevice *dev; | |
495 | ||
496 | *devp = NULL; | |
497 | for (device_find_first_child(parent, &dev); | |
498 | dev; | |
499 | device_find_next_child(&dev)) { | |
500 | struct usb_dev_platdata *plat = dev_get_parent_platdata(dev); | |
501 | ||
502 | /* If this device is already in use, skip it */ | |
503 | if (device_active(dev)) | |
504 | continue; | |
505 | debug(" %s: name='%s', plat=%d, desc=%d\n", __func__, | |
506 | dev->name, plat->id.bDeviceClass, desc->bDeviceClass); | |
507 | if (usb_match_one_id(desc, iface, &plat->id)) { | |
508 | *devp = dev; | |
509 | return 0; | |
510 | } | |
511 | } | |
512 | ||
513 | return -ENOENT; | |
514 | } | |
515 | ||
de31213f SG |
516 | int usb_scan_device(struct udevice *parent, int port, |
517 | enum usb_device_speed speed, struct udevice **devp) | |
518 | { | |
519 | struct udevice *dev; | |
520 | bool created = false; | |
521 | struct usb_dev_platdata *plat; | |
522 | struct usb_bus_priv *priv; | |
523 | struct usb_device *parent_udev; | |
524 | int ret; | |
525 | ALLOC_CACHE_ALIGN_BUFFER(struct usb_device, udev, 1); | |
526 | struct usb_interface_descriptor *iface = &udev->config.if_desc[0].desc; | |
527 | ||
528 | *devp = NULL; | |
529 | memset(udev, '\0', sizeof(*udev)); | |
f78a5c07 | 530 | udev->controller_dev = usb_get_bus(parent); |
de31213f SG |
531 | priv = dev_get_uclass_priv(udev->controller_dev); |
532 | ||
533 | /* | |
534 | * Somewhat nasty, this. We create a local device and use the normal | |
535 | * USB stack to read its descriptor. Then we know what type of device | |
536 | * to create for real. | |
537 | * | |
538 | * udev->dev is set to the parent, since we don't have a real device | |
539 | * yet. The USB stack should not access udev.dev anyway, except perhaps | |
540 | * to find the controller, and the controller will either be @parent, | |
541 | * or some parent of @parent. | |
542 | * | |
543 | * Another option might be to create the device as a generic USB | |
544 | * device, then morph it into the correct one when we know what it | |
545 | * should be. This means that a generic USB device would morph into | |
546 | * a network controller, or a USB flash stick, for example. However, | |
547 | * we don't support such morphing and it isn't clear that it would | |
548 | * be easy to do. | |
549 | * | |
550 | * Yet another option is to split out the USB stack parts of udev | |
551 | * into something like a 'struct urb' (as Linux does) which can exist | |
552 | * independently of any device. This feels cleaner, but calls for quite | |
553 | * a big change to the USB stack. | |
554 | * | |
555 | * For now, the approach is to set up an empty udev, read its | |
556 | * descriptor and assign it an address, then bind a real device and | |
557 | * stash the resulting information into the device's parent | |
558 | * platform data. Then when we probe it, usb_child_pre_probe() is called | |
559 | * and it will pull the information out of the stash. | |
560 | */ | |
561 | udev->dev = parent; | |
562 | udev->speed = speed; | |
563 | udev->devnum = priv->next_addr + 1; | |
564 | udev->portnr = port; | |
565 | debug("Calling usb_setup_device(), portnr=%d\n", udev->portnr); | |
566 | parent_udev = device_get_uclass_id(parent) == UCLASS_USB_HUB ? | |
567 | dev_get_parentdata(parent) : NULL; | |
568 | ret = usb_setup_device(udev, priv->desc_before_addr, parent_udev, port); | |
569 | debug("read_descriptor for '%s': ret=%d\n", parent->name, ret); | |
570 | if (ret) | |
571 | return ret; | |
572 | ret = usb_find_child(parent, &udev->descriptor, iface, &dev); | |
573 | debug("** usb_find_child returns %d\n", ret); | |
0566e240 SG |
574 | if (ret) { |
575 | if (ret != -ENOENT) | |
576 | return ret; | |
577 | ret = usb_find_and_bind_driver(parent, &udev->descriptor, iface, | |
578 | udev->controller_dev->seq, | |
579 | udev->devnum, &dev); | |
580 | if (ret) | |
581 | return ret; | |
582 | created = true; | |
583 | } | |
584 | plat = dev_get_parent_platdata(dev); | |
585 | debug("%s: Probing '%s', plat=%p\n", __func__, dev->name, plat); | |
586 | plat->devnum = udev->devnum; | |
7f1a0753 | 587 | plat->udev = udev; |
0566e240 SG |
588 | priv->next_addr++; |
589 | ret = device_probe(dev); | |
590 | if (ret) { | |
591 | debug("%s: Device '%s' probe failed\n", __func__, dev->name); | |
592 | priv->next_addr--; | |
593 | if (created) | |
594 | device_unbind(dev); | |
595 | return ret; | |
596 | } | |
597 | *devp = dev; | |
de31213f | 598 | |
0566e240 | 599 | return 0; |
de31213f SG |
600 | } |
601 | ||
0c5dd9ae SG |
602 | /* |
603 | * Detect if a USB device has been plugged or unplugged. | |
604 | */ | |
605 | int usb_detect_change(void) | |
606 | { | |
607 | struct udevice *hub; | |
608 | struct uclass *uc; | |
609 | int change = 0; | |
610 | int ret; | |
611 | ||
612 | ret = uclass_get(UCLASS_USB_HUB, &uc); | |
613 | if (ret) | |
614 | return ret; | |
615 | ||
616 | uclass_foreach_dev(hub, uc) { | |
617 | struct usb_device *udev; | |
618 | struct udevice *dev; | |
619 | ||
620 | if (!device_active(hub)) | |
621 | continue; | |
622 | for (device_find_first_child(hub, &dev); | |
623 | dev; | |
624 | device_find_next_child(&dev)) { | |
625 | struct usb_port_status status; | |
626 | ||
627 | if (!device_active(dev)) | |
628 | continue; | |
629 | ||
630 | udev = dev_get_parentdata(dev); | |
631 | if (usb_get_port_status(udev, udev->portnr, &status) | |
632 | < 0) | |
633 | /* USB request failed */ | |
634 | continue; | |
635 | ||
636 | if (le16_to_cpu(status.wPortChange) & | |
637 | USB_PORT_STAT_C_CONNECTION) | |
638 | change++; | |
639 | } | |
640 | } | |
641 | ||
642 | return change; | |
643 | } | |
644 | ||
de31213f SG |
645 | int usb_child_post_bind(struct udevice *dev) |
646 | { | |
647 | struct usb_dev_platdata *plat = dev_get_parent_platdata(dev); | |
648 | const void *blob = gd->fdt_blob; | |
649 | int val; | |
650 | ||
651 | if (dev->of_offset == -1) | |
652 | return 0; | |
653 | ||
654 | /* We only support matching a few things */ | |
655 | val = fdtdec_get_int(blob, dev->of_offset, "usb,device-class", -1); | |
656 | if (val != -1) { | |
657 | plat->id.match_flags |= USB_DEVICE_ID_MATCH_DEV_CLASS; | |
658 | plat->id.bDeviceClass = val; | |
659 | } | |
660 | val = fdtdec_get_int(blob, dev->of_offset, "usb,interface-class", -1); | |
661 | if (val != -1) { | |
662 | plat->id.match_flags |= USB_DEVICE_ID_MATCH_INT_CLASS; | |
663 | plat->id.bInterfaceClass = val; | |
664 | } | |
665 | ||
666 | return 0; | |
667 | } | |
668 | ||
f78a5c07 | 669 | struct udevice *usb_get_bus(struct udevice *dev) |
de31213f SG |
670 | { |
671 | struct udevice *bus; | |
672 | ||
de31213f SG |
673 | for (bus = dev; bus && device_get_uclass_id(bus) != UCLASS_USB; ) |
674 | bus = bus->parent; | |
675 | if (!bus) { | |
676 | /* By design this cannot happen */ | |
677 | assert(bus); | |
678 | debug("USB HUB '%s' does not have a controller\n", dev->name); | |
de31213f | 679 | } |
de31213f | 680 | |
f78a5c07 | 681 | return bus; |
de31213f SG |
682 | } |
683 | ||
684 | int usb_child_pre_probe(struct udevice *dev) | |
685 | { | |
de31213f SG |
686 | struct usb_device *udev = dev_get_parentdata(dev); |
687 | struct usb_dev_platdata *plat = dev_get_parent_platdata(dev); | |
688 | int ret; | |
689 | ||
7f1a0753 HG |
690 | if (plat->udev) { |
691 | /* | |
692 | * Copy over all the values set in the on stack struct | |
693 | * usb_device in usb_scan_device() to our final struct | |
694 | * usb_device for this dev. | |
695 | */ | |
696 | *udev = *(plat->udev); | |
697 | /* And clear plat->udev as it will not be valid for long */ | |
698 | plat->udev = NULL; | |
699 | udev->dev = dev; | |
700 | } else { | |
701 | /* | |
702 | * This happens with devices which are explicitly bound | |
703 | * instead of being discovered through usb_scan_device() | |
704 | * such as sandbox emul devices. | |
705 | */ | |
706 | udev->dev = dev; | |
707 | udev->controller_dev = usb_get_bus(dev); | |
708 | udev->devnum = plat->devnum; | |
de31213f | 709 | |
7f1a0753 HG |
710 | /* |
711 | * udev did not go through usb_scan_device(), so we need to | |
712 | * select the config and read the config descriptors. | |
713 | */ | |
714 | ret = usb_select_config(udev); | |
715 | if (ret) | |
716 | return ret; | |
717 | } | |
de31213f SG |
718 | |
719 | return 0; | |
720 | } | |
721 | ||
722 | UCLASS_DRIVER(usb) = { | |
723 | .id = UCLASS_USB, | |
724 | .name = "usb", | |
725 | .flags = DM_UC_FLAG_SEQ_ALIAS, | |
726 | .post_bind = usb_post_bind, | |
e253637b | 727 | .priv_auto_alloc_size = sizeof(struct usb_uclass_priv), |
de31213f SG |
728 | .per_child_auto_alloc_size = sizeof(struct usb_device), |
729 | .per_device_auto_alloc_size = sizeof(struct usb_bus_priv), | |
730 | .child_post_bind = usb_child_post_bind, | |
731 | .child_pre_probe = usb_child_pre_probe, | |
732 | .per_child_platdata_auto_alloc_size = sizeof(struct usb_dev_platdata), | |
733 | }; | |
449230f0 SG |
734 | |
735 | UCLASS_DRIVER(usb_dev_generic) = { | |
736 | .id = UCLASS_USB_DEV_GENERIC, | |
737 | .name = "usb_dev_generic", | |
738 | }; | |
739 | ||
740 | U_BOOT_DRIVER(usb_dev_generic_drv) = { | |
741 | .id = UCLASS_USB_DEV_GENERIC, | |
742 | .name = "usb_dev_generic_drv", | |
743 | }; |