Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * drivers/usb/core/sysfs.c | |
3 | * | |
4 | * (C) Copyright 2002 David Brownell | |
5 | * (C) Copyright 2002,2004 Greg Kroah-Hartman | |
6 | * (C) Copyright 2002,2004 IBM Corp. | |
7 | * | |
8 | * All of the sysfs file attributes for usb devices and interfaces. | |
9 | * | |
10 | */ | |
11 | ||
12 | ||
1da177e4 | 13 | #include <linux/kernel.h> |
2add5229 | 14 | #include <linux/string.h> |
1da177e4 | 15 | #include <linux/usb.h> |
1da177e4 LT |
16 | #include "usb.h" |
17 | ||
18 | /* Active configuration fields */ | |
19 | #define usb_actconfig_show(field, multiplier, format_string) \ | |
9251644a | 20 | static ssize_t show_##field(struct device *dev, \ |
b724ae77 | 21 | struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
22 | { \ |
23 | struct usb_device *udev; \ | |
24 | struct usb_host_config *actconfig; \ | |
25 | \ | |
9251644a | 26 | udev = to_usb_device(dev); \ |
1da177e4 LT |
27 | actconfig = udev->actconfig; \ |
28 | if (actconfig) \ | |
9251644a | 29 | return sprintf(buf, format_string, \ |
1da177e4 LT |
30 | actconfig->desc.field * multiplier); \ |
31 | else \ | |
32 | return 0; \ | |
33 | } \ | |
34 | ||
35 | #define usb_actconfig_attr(field, multiplier, format_string) \ | |
36 | usb_actconfig_show(field, multiplier, format_string) \ | |
37 | static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); | |
38 | ||
9251644a ON |
39 | usb_actconfig_attr(bNumInterfaces, 1, "%2d\n") |
40 | usb_actconfig_attr(bmAttributes, 1, "%2x\n") | |
41 | usb_actconfig_attr(bMaxPower, 2, "%3dmA\n") | |
1da177e4 | 42 | |
b724ae77 AS |
43 | static ssize_t show_configuration_string(struct device *dev, |
44 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
45 | { |
46 | struct usb_device *udev; | |
47 | struct usb_host_config *actconfig; | |
1da177e4 | 48 | |
9251644a | 49 | udev = to_usb_device(dev); |
1da177e4 LT |
50 | actconfig = udev->actconfig; |
51 | if ((!actconfig) || (!actconfig->string)) | |
52 | return 0; | |
4f62efe6 | 53 | return sprintf(buf, "%s\n", actconfig->string); |
1da177e4 LT |
54 | } |
55 | static DEVICE_ATTR(configuration, S_IRUGO, show_configuration_string, NULL); | |
56 | ||
57 | /* configuration value is always present, and r/w */ | |
58 | usb_actconfig_show(bConfigurationValue, 1, "%u\n"); | |
59 | ||
60 | static ssize_t | |
9251644a | 61 | set_bConfigurationValue(struct device *dev, struct device_attribute *attr, |
b724ae77 | 62 | const char *buf, size_t count) |
1da177e4 | 63 | { |
9251644a | 64 | struct usb_device *udev = to_usb_device(dev); |
1da177e4 LT |
65 | int config, value; |
66 | ||
3f141e2a | 67 | if (sscanf(buf, "%d", &config) != 1 || config < -1 || config > 255) |
1da177e4 LT |
68 | return -EINVAL; |
69 | usb_lock_device(udev); | |
9251644a | 70 | value = usb_set_configuration(udev, config); |
1da177e4 LT |
71 | usb_unlock_device(udev); |
72 | return (value < 0) ? value : count; | |
73 | } | |
74 | ||
75 | static DEVICE_ATTR(bConfigurationValue, S_IRUGO | S_IWUSR, | |
76 | show_bConfigurationValue, set_bConfigurationValue); | |
77 | ||
78 | /* String fields */ | |
79 | #define usb_string_attr(name) \ | |
b724ae77 AS |
80 | static ssize_t show_##name(struct device *dev, \ |
81 | struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
82 | { \ |
83 | struct usb_device *udev; \ | |
1da177e4 | 84 | \ |
9251644a | 85 | udev = to_usb_device(dev); \ |
4f62efe6 | 86 | return sprintf(buf, "%s\n", udev->name); \ |
1da177e4 LT |
87 | } \ |
88 | static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL); | |
89 | ||
90 | usb_string_attr(product); | |
91 | usb_string_attr(manufacturer); | |
92 | usb_string_attr(serial); | |
93 | ||
94 | static ssize_t | |
9251644a | 95 | show_speed(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
96 | { |
97 | struct usb_device *udev; | |
98 | char *speed; | |
99 | ||
9251644a | 100 | udev = to_usb_device(dev); |
1da177e4 LT |
101 | |
102 | switch (udev->speed) { | |
103 | case USB_SPEED_LOW: | |
104 | speed = "1.5"; | |
105 | break; | |
106 | case USB_SPEED_UNKNOWN: | |
107 | case USB_SPEED_FULL: | |
108 | speed = "12"; | |
109 | break; | |
110 | case USB_SPEED_HIGH: | |
111 | speed = "480"; | |
112 | break; | |
113 | default: | |
114 | speed = "unknown"; | |
115 | } | |
9251644a | 116 | return sprintf(buf, "%s\n", speed); |
1da177e4 LT |
117 | } |
118 | static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL); | |
119 | ||
83f7d958 AS |
120 | static ssize_t |
121 | show_busnum(struct device *dev, struct device_attribute *attr, char *buf) | |
122 | { | |
123 | struct usb_device *udev; | |
124 | ||
125 | udev = to_usb_device(dev); | |
126 | return sprintf(buf, "%d\n", udev->bus->busnum); | |
127 | } | |
128 | static DEVICE_ATTR(busnum, S_IRUGO, show_busnum, NULL); | |
129 | ||
1da177e4 | 130 | static ssize_t |
9251644a | 131 | show_devnum(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
132 | { |
133 | struct usb_device *udev; | |
134 | ||
9251644a ON |
135 | udev = to_usb_device(dev); |
136 | return sprintf(buf, "%d\n", udev->devnum); | |
1da177e4 LT |
137 | } |
138 | static DEVICE_ATTR(devnum, S_IRUGO, show_devnum, NULL); | |
139 | ||
140 | static ssize_t | |
9251644a | 141 | show_version(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
142 | { |
143 | struct usb_device *udev; | |
144 | u16 bcdUSB; | |
145 | ||
146 | udev = to_usb_device(dev); | |
147 | bcdUSB = le16_to_cpu(udev->descriptor.bcdUSB); | |
148 | return sprintf(buf, "%2x.%02x\n", bcdUSB >> 8, bcdUSB & 0xff); | |
149 | } | |
150 | static DEVICE_ATTR(version, S_IRUGO, show_version, NULL); | |
151 | ||
152 | static ssize_t | |
9251644a | 153 | show_maxchild(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
154 | { |
155 | struct usb_device *udev; | |
156 | ||
9251644a ON |
157 | udev = to_usb_device(dev); |
158 | return sprintf(buf, "%d\n", udev->maxchild); | |
1da177e4 LT |
159 | } |
160 | static DEVICE_ATTR(maxchild, S_IRUGO, show_maxchild, NULL); | |
161 | ||
7ceec1f1 ON |
162 | static ssize_t |
163 | show_quirks(struct device *dev, struct device_attribute *attr, char *buf) | |
164 | { | |
165 | struct usb_device *udev; | |
166 | ||
167 | udev = to_usb_device(dev); | |
168 | return sprintf(buf, "0x%x\n", udev->quirks); | |
169 | } | |
170 | static DEVICE_ATTR(quirks, S_IRUGO, show_quirks, NULL); | |
171 | ||
b41a60ec AS |
172 | |
173 | #if defined(CONFIG_USB_PERSIST) || defined(CONFIG_USB_SUSPEND) | |
174 | static const char power_group[] = "power"; | |
175 | #endif | |
176 | ||
177 | #ifdef CONFIG_USB_PERSIST | |
178 | ||
179 | static ssize_t | |
180 | show_persist(struct device *dev, struct device_attribute *attr, char *buf) | |
181 | { | |
182 | struct usb_device *udev = to_usb_device(dev); | |
183 | ||
184 | return sprintf(buf, "%d\n", udev->persist_enabled); | |
185 | } | |
186 | ||
187 | static ssize_t | |
188 | set_persist(struct device *dev, struct device_attribute *attr, | |
189 | const char *buf, size_t count) | |
190 | { | |
191 | struct usb_device *udev = to_usb_device(dev); | |
192 | int value; | |
193 | ||
194 | /* Hubs are always enabled for USB_PERSIST */ | |
195 | if (udev->descriptor.bDeviceClass == USB_CLASS_HUB) | |
196 | return -EPERM; | |
197 | ||
198 | if (sscanf(buf, "%d", &value) != 1) | |
199 | return -EINVAL; | |
200 | usb_pm_lock(udev); | |
201 | udev->persist_enabled = !!value; | |
202 | usb_pm_unlock(udev); | |
203 | return count; | |
204 | } | |
205 | ||
206 | static DEVICE_ATTR(persist, S_IRUGO | S_IWUSR, show_persist, set_persist); | |
207 | ||
208 | static int add_persist_attributes(struct device *dev) | |
209 | { | |
210 | int rc = 0; | |
211 | ||
212 | if (is_usb_device(dev)) { | |
213 | struct usb_device *udev = to_usb_device(dev); | |
214 | ||
215 | /* Hubs are automatically enabled for USB_PERSIST */ | |
216 | if (udev->descriptor.bDeviceClass == USB_CLASS_HUB) | |
217 | udev->persist_enabled = 1; | |
218 | rc = sysfs_add_file_to_group(&dev->kobj, | |
219 | &dev_attr_persist.attr, | |
220 | power_group); | |
221 | } | |
222 | return rc; | |
223 | } | |
224 | ||
225 | static void remove_persist_attributes(struct device *dev) | |
226 | { | |
227 | sysfs_remove_file_from_group(&dev->kobj, | |
228 | &dev_attr_persist.attr, | |
229 | power_group); | |
230 | } | |
231 | ||
232 | #else | |
233 | ||
234 | #define add_persist_attributes(dev) 0 | |
235 | #define remove_persist_attributes(dev) do {} while (0) | |
236 | ||
237 | #endif /* CONFIG_USB_PERSIST */ | |
238 | ||
19c26239 AS |
239 | #ifdef CONFIG_USB_SUSPEND |
240 | ||
241 | static ssize_t | |
242 | show_autosuspend(struct device *dev, struct device_attribute *attr, char *buf) | |
243 | { | |
244 | struct usb_device *udev = to_usb_device(dev); | |
245 | ||
eaafbc3a | 246 | return sprintf(buf, "%d\n", udev->autosuspend_delay / HZ); |
19c26239 AS |
247 | } |
248 | ||
249 | static ssize_t | |
250 | set_autosuspend(struct device *dev, struct device_attribute *attr, | |
251 | const char *buf, size_t count) | |
252 | { | |
253 | struct usb_device *udev = to_usb_device(dev); | |
eaafbc3a | 254 | int value; |
19c26239 | 255 | |
eaafbc3a AS |
256 | if (sscanf(buf, "%d", &value) != 1 || value >= INT_MAX/HZ || |
257 | value <= - INT_MAX/HZ) | |
19c26239 AS |
258 | return -EINVAL; |
259 | value *= HZ; | |
260 | ||
19c26239 | 261 | udev->autosuspend_delay = value; |
eaafbc3a | 262 | if (value >= 0) |
19c26239 | 263 | usb_try_autosuspend_device(udev); |
eaafbc3a | 264 | else { |
2add5229 AS |
265 | if (usb_autoresume_device(udev) == 0) |
266 | usb_autosuspend_device(udev); | |
eaafbc3a | 267 | } |
19c26239 AS |
268 | return count; |
269 | } | |
270 | ||
271 | static DEVICE_ATTR(autosuspend, S_IRUGO | S_IWUSR, | |
272 | show_autosuspend, set_autosuspend); | |
273 | ||
2add5229 AS |
274 | static const char on_string[] = "on"; |
275 | static const char auto_string[] = "auto"; | |
276 | static const char suspend_string[] = "suspend"; | |
277 | ||
278 | static ssize_t | |
279 | show_level(struct device *dev, struct device_attribute *attr, char *buf) | |
280 | { | |
281 | struct usb_device *udev = to_usb_device(dev); | |
282 | const char *p = auto_string; | |
283 | ||
284 | if (udev->state == USB_STATE_SUSPENDED) { | |
285 | if (udev->autoresume_disabled) | |
286 | p = suspend_string; | |
287 | } else { | |
288 | if (udev->autosuspend_disabled) | |
289 | p = on_string; | |
290 | } | |
291 | return sprintf(buf, "%s\n", p); | |
292 | } | |
293 | ||
294 | static ssize_t | |
295 | set_level(struct device *dev, struct device_attribute *attr, | |
296 | const char *buf, size_t count) | |
297 | { | |
298 | struct usb_device *udev = to_usb_device(dev); | |
299 | int len = count; | |
300 | char *cp; | |
301 | int rc = 0; | |
dd865571 | 302 | int old_autosuspend_disabled, old_autoresume_disabled; |
2add5229 AS |
303 | |
304 | cp = memchr(buf, '\n', count); | |
305 | if (cp) | |
306 | len = cp - buf; | |
307 | ||
308 | usb_lock_device(udev); | |
dd865571 AS |
309 | old_autosuspend_disabled = udev->autosuspend_disabled; |
310 | old_autoresume_disabled = udev->autoresume_disabled; | |
2add5229 AS |
311 | |
312 | /* Setting the flags without calling usb_pm_lock is a subject to | |
313 | * races, but who cares... | |
314 | */ | |
315 | if (len == sizeof on_string - 1 && | |
316 | strncmp(buf, on_string, len) == 0) { | |
317 | udev->autosuspend_disabled = 1; | |
318 | udev->autoresume_disabled = 0; | |
319 | rc = usb_external_resume_device(udev); | |
320 | ||
321 | } else if (len == sizeof auto_string - 1 && | |
322 | strncmp(buf, auto_string, len) == 0) { | |
323 | udev->autosuspend_disabled = 0; | |
324 | udev->autoresume_disabled = 0; | |
325 | rc = usb_external_resume_device(udev); | |
326 | ||
327 | } else if (len == sizeof suspend_string - 1 && | |
328 | strncmp(buf, suspend_string, len) == 0) { | |
329 | udev->autosuspend_disabled = 0; | |
330 | udev->autoresume_disabled = 1; | |
331 | rc = usb_external_suspend_device(udev, PMSG_SUSPEND); | |
332 | ||
333 | } else | |
334 | rc = -EINVAL; | |
335 | ||
dd865571 AS |
336 | if (rc) { |
337 | udev->autosuspend_disabled = old_autosuspend_disabled; | |
338 | udev->autoresume_disabled = old_autoresume_disabled; | |
339 | } | |
2add5229 AS |
340 | usb_unlock_device(udev); |
341 | return (rc < 0 ? rc : count); | |
342 | } | |
343 | ||
344 | static DEVICE_ATTR(level, S_IRUGO | S_IWUSR, show_level, set_level); | |
345 | ||
19c26239 AS |
346 | static int add_power_attributes(struct device *dev) |
347 | { | |
348 | int rc = 0; | |
349 | ||
2add5229 | 350 | if (is_usb_device(dev)) { |
19c26239 AS |
351 | rc = sysfs_add_file_to_group(&dev->kobj, |
352 | &dev_attr_autosuspend.attr, | |
353 | power_group); | |
2add5229 AS |
354 | if (rc == 0) |
355 | rc = sysfs_add_file_to_group(&dev->kobj, | |
356 | &dev_attr_level.attr, | |
357 | power_group); | |
358 | } | |
19c26239 AS |
359 | return rc; |
360 | } | |
361 | ||
362 | static void remove_power_attributes(struct device *dev) | |
363 | { | |
2add5229 AS |
364 | sysfs_remove_file_from_group(&dev->kobj, |
365 | &dev_attr_level.attr, | |
366 | power_group); | |
19c26239 AS |
367 | sysfs_remove_file_from_group(&dev->kobj, |
368 | &dev_attr_autosuspend.attr, | |
369 | power_group); | |
370 | } | |
371 | ||
372 | #else | |
373 | ||
374 | #define add_power_attributes(dev) 0 | |
375 | #define remove_power_attributes(dev) do {} while (0) | |
376 | ||
377 | #endif /* CONFIG_USB_SUSPEND */ | |
378 | ||
b41a60ec | 379 | |
1da177e4 LT |
380 | /* Descriptor fields */ |
381 | #define usb_descriptor_attr_le16(field, format_string) \ | |
382 | static ssize_t \ | |
9251644a | 383 | show_##field(struct device *dev, struct device_attribute *attr, \ |
b724ae77 | 384 | char *buf) \ |
1da177e4 LT |
385 | { \ |
386 | struct usb_device *udev; \ | |
387 | \ | |
9251644a ON |
388 | udev = to_usb_device(dev); \ |
389 | return sprintf(buf, format_string, \ | |
1da177e4 LT |
390 | le16_to_cpu(udev->descriptor.field)); \ |
391 | } \ | |
392 | static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); | |
393 | ||
394 | usb_descriptor_attr_le16(idVendor, "%04x\n") | |
395 | usb_descriptor_attr_le16(idProduct, "%04x\n") | |
396 | usb_descriptor_attr_le16(bcdDevice, "%04x\n") | |
397 | ||
398 | #define usb_descriptor_attr(field, format_string) \ | |
399 | static ssize_t \ | |
9251644a | 400 | show_##field(struct device *dev, struct device_attribute *attr, \ |
b724ae77 | 401 | char *buf) \ |
1da177e4 LT |
402 | { \ |
403 | struct usb_device *udev; \ | |
404 | \ | |
9251644a ON |
405 | udev = to_usb_device(dev); \ |
406 | return sprintf(buf, format_string, udev->descriptor.field); \ | |
1da177e4 LT |
407 | } \ |
408 | static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); | |
409 | ||
9251644a ON |
410 | usb_descriptor_attr(bDeviceClass, "%02x\n") |
411 | usb_descriptor_attr(bDeviceSubClass, "%02x\n") | |
412 | usb_descriptor_attr(bDeviceProtocol, "%02x\n") | |
413 | usb_descriptor_attr(bNumConfigurations, "%d\n") | |
414 | usb_descriptor_attr(bMaxPacketSize0, "%d\n") | |
1da177e4 LT |
415 | |
416 | static struct attribute *dev_attrs[] = { | |
417 | /* current configuration's attributes */ | |
b6eb2d84 | 418 | &dev_attr_configuration.attr, |
1da177e4 LT |
419 | &dev_attr_bNumInterfaces.attr, |
420 | &dev_attr_bConfigurationValue.attr, | |
421 | &dev_attr_bmAttributes.attr, | |
422 | &dev_attr_bMaxPower.attr, | |
423 | /* device attributes */ | |
424 | &dev_attr_idVendor.attr, | |
425 | &dev_attr_idProduct.attr, | |
426 | &dev_attr_bcdDevice.attr, | |
427 | &dev_attr_bDeviceClass.attr, | |
428 | &dev_attr_bDeviceSubClass.attr, | |
429 | &dev_attr_bDeviceProtocol.attr, | |
430 | &dev_attr_bNumConfigurations.attr, | |
cf5910bb | 431 | &dev_attr_bMaxPacketSize0.attr, |
1da177e4 | 432 | &dev_attr_speed.attr, |
83f7d958 | 433 | &dev_attr_busnum.attr, |
1da177e4 LT |
434 | &dev_attr_devnum.attr, |
435 | &dev_attr_version.attr, | |
436 | &dev_attr_maxchild.attr, | |
7ceec1f1 | 437 | &dev_attr_quirks.attr, |
1da177e4 LT |
438 | NULL, |
439 | }; | |
440 | static struct attribute_group dev_attr_grp = { | |
441 | .attrs = dev_attrs, | |
442 | }; | |
443 | ||
69d42a78 AS |
444 | /* Binary descriptors */ |
445 | ||
446 | static ssize_t | |
447 | read_descriptors(struct kobject *kobj, struct bin_attribute *attr, | |
448 | char *buf, loff_t off, size_t count) | |
449 | { | |
450 | struct usb_device *udev = to_usb_device( | |
451 | container_of(kobj, struct device, kobj)); | |
452 | size_t nleft = count; | |
453 | size_t srclen, n; | |
454 | ||
455 | usb_lock_device(udev); | |
456 | ||
457 | /* The binary attribute begins with the device descriptor */ | |
458 | srclen = sizeof(struct usb_device_descriptor); | |
459 | if (off < srclen) { | |
460 | n = min_t(size_t, nleft, srclen - off); | |
461 | memcpy(buf, off + (char *) &udev->descriptor, n); | |
462 | nleft -= n; | |
463 | buf += n; | |
464 | off = 0; | |
465 | } else { | |
466 | off -= srclen; | |
467 | } | |
468 | ||
469 | /* Then follows the raw descriptor entry for the current | |
470 | * configuration (config plus subsidiary descriptors). | |
471 | */ | |
472 | if (udev->actconfig) { | |
473 | int cfgno = udev->actconfig - udev->config; | |
474 | ||
475 | srclen = __le16_to_cpu(udev->actconfig->desc.wTotalLength); | |
476 | if (off < srclen) { | |
477 | n = min_t(size_t, nleft, srclen - off); | |
478 | memcpy(buf, off + udev->rawdescriptors[cfgno], n); | |
479 | nleft -= n; | |
480 | } | |
481 | } | |
482 | usb_unlock_device(udev); | |
483 | return count - nleft; | |
484 | } | |
485 | ||
486 | static struct bin_attribute dev_bin_attr_descriptors = { | |
487 | .attr = {.name = "descriptors", .mode = 0444}, | |
488 | .read = read_descriptors, | |
489 | .size = 18 + 65535, /* dev descr + max-size raw descriptor */ | |
490 | }; | |
491 | ||
1b21d5e1 | 492 | int usb_create_sysfs_dev_files(struct usb_device *udev) |
1da177e4 LT |
493 | { |
494 | struct device *dev = &udev->dev; | |
1b21d5e1 | 495 | int retval; |
1da177e4 | 496 | |
1b21d5e1 GKH |
497 | retval = sysfs_create_group(&dev->kobj, &dev_attr_grp); |
498 | if (retval) | |
499 | return retval; | |
1da177e4 | 500 | |
69d42a78 AS |
501 | retval = device_create_bin_file(dev, &dev_bin_attr_descriptors); |
502 | if (retval) | |
503 | goto error; | |
504 | ||
b41a60ec AS |
505 | retval = add_persist_attributes(dev); |
506 | if (retval) | |
507 | goto error; | |
508 | ||
19c26239 AS |
509 | retval = add_power_attributes(dev); |
510 | if (retval) | |
511 | goto error; | |
512 | ||
1b21d5e1 | 513 | if (udev->manufacturer) { |
9251644a | 514 | retval = device_create_file(dev, &dev_attr_manufacturer); |
1b21d5e1 GKH |
515 | if (retval) |
516 | goto error; | |
517 | } | |
518 | if (udev->product) { | |
9251644a | 519 | retval = device_create_file(dev, &dev_attr_product); |
1b21d5e1 GKH |
520 | if (retval) |
521 | goto error; | |
522 | } | |
523 | if (udev->serial) { | |
9251644a | 524 | retval = device_create_file(dev, &dev_attr_serial); |
1b21d5e1 GKH |
525 | if (retval) |
526 | goto error; | |
527 | } | |
528 | retval = usb_create_ep_files(dev, &udev->ep0, udev); | |
529 | if (retval) | |
530 | goto error; | |
531 | return 0; | |
532 | error: | |
aa084f3e | 533 | usb_remove_sysfs_dev_files(udev); |
1b21d5e1 | 534 | return retval; |
1da177e4 LT |
535 | } |
536 | ||
9251644a | 537 | void usb_remove_sysfs_dev_files(struct usb_device *udev) |
1da177e4 LT |
538 | { |
539 | struct device *dev = &udev->dev; | |
540 | ||
be69e5b1 | 541 | usb_remove_ep_files(&udev->ep0); |
aa084f3e AS |
542 | device_remove_file(dev, &dev_attr_manufacturer); |
543 | device_remove_file(dev, &dev_attr_product); | |
544 | device_remove_file(dev, &dev_attr_serial); | |
19c26239 | 545 | remove_power_attributes(dev); |
b41a60ec | 546 | remove_persist_attributes(dev); |
69d42a78 | 547 | device_remove_bin_file(dev, &dev_bin_attr_descriptors); |
1da177e4 | 548 | sysfs_remove_group(&dev->kobj, &dev_attr_grp); |
1da177e4 LT |
549 | } |
550 | ||
165fe97e CN |
551 | /* Interface Accociation Descriptor fields */ |
552 | #define usb_intf_assoc_attr(field, format_string) \ | |
553 | static ssize_t \ | |
554 | show_iad_##field (struct device *dev, struct device_attribute *attr, \ | |
555 | char *buf) \ | |
556 | { \ | |
557 | struct usb_interface *intf = to_usb_interface (dev); \ | |
558 | \ | |
559 | return sprintf (buf, format_string, \ | |
560 | intf->intf_assoc->field); \ | |
561 | } \ | |
562 | static DEVICE_ATTR(iad_##field, S_IRUGO, show_iad_##field, NULL); | |
563 | ||
564 | usb_intf_assoc_attr (bFirstInterface, "%02x\n") | |
565 | usb_intf_assoc_attr (bInterfaceCount, "%02d\n") | |
566 | usb_intf_assoc_attr (bFunctionClass, "%02x\n") | |
567 | usb_intf_assoc_attr (bFunctionSubClass, "%02x\n") | |
568 | usb_intf_assoc_attr (bFunctionProtocol, "%02x\n") | |
569 | ||
1da177e4 LT |
570 | /* Interface fields */ |
571 | #define usb_intf_attr(field, format_string) \ | |
572 | static ssize_t \ | |
9251644a | 573 | show_##field(struct device *dev, struct device_attribute *attr, \ |
b724ae77 | 574 | char *buf) \ |
1da177e4 | 575 | { \ |
9251644a | 576 | struct usb_interface *intf = to_usb_interface(dev); \ |
1da177e4 | 577 | \ |
9251644a | 578 | return sprintf(buf, format_string, \ |
b724ae77 | 579 | intf->cur_altsetting->desc.field); \ |
1da177e4 LT |
580 | } \ |
581 | static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); | |
582 | ||
9251644a ON |
583 | usb_intf_attr(bInterfaceNumber, "%02x\n") |
584 | usb_intf_attr(bAlternateSetting, "%2d\n") | |
585 | usb_intf_attr(bNumEndpoints, "%02x\n") | |
586 | usb_intf_attr(bInterfaceClass, "%02x\n") | |
587 | usb_intf_attr(bInterfaceSubClass, "%02x\n") | |
588 | usb_intf_attr(bInterfaceProtocol, "%02x\n") | |
1da177e4 | 589 | |
b724ae77 AS |
590 | static ssize_t show_interface_string(struct device *dev, |
591 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
592 | { |
593 | struct usb_interface *intf; | |
594 | struct usb_device *udev; | |
595 | int len; | |
596 | ||
9251644a ON |
597 | intf = to_usb_interface(dev); |
598 | udev = interface_to_usbdev(intf); | |
1da177e4 LT |
599 | len = snprintf(buf, 256, "%s", intf->cur_altsetting->string); |
600 | if (len < 0) | |
601 | return 0; | |
602 | buf[len] = '\n'; | |
603 | buf[len+1] = 0; | |
604 | return len+1; | |
605 | } | |
606 | static DEVICE_ATTR(interface, S_IRUGO, show_interface_string, NULL); | |
607 | ||
b724ae77 AS |
608 | static ssize_t show_modalias(struct device *dev, |
609 | struct device_attribute *attr, char *buf) | |
360b52b0 GK |
610 | { |
611 | struct usb_interface *intf; | |
612 | struct usb_device *udev; | |
7521803d | 613 | struct usb_host_interface *alt; |
360b52b0 GK |
614 | |
615 | intf = to_usb_interface(dev); | |
616 | udev = interface_to_usbdev(intf); | |
7521803d GKH |
617 | alt = intf->cur_altsetting; |
618 | ||
619 | return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02X" | |
620 | "ic%02Xisc%02Xip%02X\n", | |
621 | le16_to_cpu(udev->descriptor.idVendor), | |
622 | le16_to_cpu(udev->descriptor.idProduct), | |
623 | le16_to_cpu(udev->descriptor.bcdDevice), | |
624 | udev->descriptor.bDeviceClass, | |
625 | udev->descriptor.bDeviceSubClass, | |
626 | udev->descriptor.bDeviceProtocol, | |
627 | alt->desc.bInterfaceClass, | |
628 | alt->desc.bInterfaceSubClass, | |
629 | alt->desc.bInterfaceProtocol); | |
360b52b0 GK |
630 | } |
631 | static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL); | |
632 | ||
165fe97e CN |
633 | static struct attribute *intf_assoc_attrs[] = { |
634 | &dev_attr_iad_bFirstInterface.attr, | |
635 | &dev_attr_iad_bInterfaceCount.attr, | |
636 | &dev_attr_iad_bFunctionClass.attr, | |
637 | &dev_attr_iad_bFunctionSubClass.attr, | |
638 | &dev_attr_iad_bFunctionProtocol.attr, | |
639 | NULL, | |
640 | }; | |
641 | static struct attribute_group intf_assoc_attr_grp = { | |
642 | .attrs = intf_assoc_attrs, | |
643 | }; | |
644 | ||
1da177e4 LT |
645 | static struct attribute *intf_attrs[] = { |
646 | &dev_attr_bInterfaceNumber.attr, | |
647 | &dev_attr_bAlternateSetting.attr, | |
648 | &dev_attr_bNumEndpoints.attr, | |
649 | &dev_attr_bInterfaceClass.attr, | |
650 | &dev_attr_bInterfaceSubClass.attr, | |
651 | &dev_attr_bInterfaceProtocol.attr, | |
360b52b0 | 652 | &dev_attr_modalias.attr, |
1da177e4 LT |
653 | NULL, |
654 | }; | |
655 | static struct attribute_group intf_attr_grp = { | |
656 | .attrs = intf_attrs, | |
657 | }; | |
658 | ||
4f62efe6 AS |
659 | static inline void usb_create_intf_ep_files(struct usb_interface *intf, |
660 | struct usb_device *udev) | |
094f1649 GKH |
661 | { |
662 | struct usb_host_interface *iface_desc; | |
663 | int i; | |
664 | ||
665 | iface_desc = intf->cur_altsetting; | |
666 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) | |
36679ea5 | 667 | usb_create_ep_files(&intf->dev, &iface_desc->endpoint[i], |
4f62efe6 | 668 | udev); |
094f1649 GKH |
669 | } |
670 | ||
be69e5b1 | 671 | static inline void usb_remove_intf_ep_files(struct usb_interface *intf) |
094f1649 GKH |
672 | { |
673 | struct usb_host_interface *iface_desc; | |
674 | int i; | |
675 | ||
676 | iface_desc = intf->cur_altsetting; | |
677 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) | |
be69e5b1 | 678 | usb_remove_ep_files(&iface_desc->endpoint[i]); |
094f1649 GKH |
679 | } |
680 | ||
1b21d5e1 | 681 | int usb_create_sysfs_intf_files(struct usb_interface *intf) |
1da177e4 | 682 | { |
aa084f3e | 683 | struct device *dev = &intf->dev; |
4f62efe6 AS |
684 | struct usb_device *udev = interface_to_usbdev(intf); |
685 | struct usb_host_interface *alt = intf->cur_altsetting; | |
1b21d5e1 | 686 | int retval; |
4f62efe6 | 687 | |
aa084f3e | 688 | retval = sysfs_create_group(&dev->kobj, &intf_attr_grp); |
1b21d5e1 | 689 | if (retval) |
aa084f3e | 690 | return retval; |
1da177e4 | 691 | |
4f62efe6 AS |
692 | if (alt->string == NULL) |
693 | alt->string = usb_cache_string(udev, alt->desc.iInterface); | |
694 | if (alt->string) | |
aa084f3e | 695 | retval = device_create_file(dev, &dev_attr_interface); |
165fe97e CN |
696 | if (intf->intf_assoc) |
697 | retval = sysfs_create_group(&dev->kobj, &intf_assoc_attr_grp); | |
4f62efe6 | 698 | usb_create_intf_ep_files(intf, udev); |
1b21d5e1 | 699 | return 0; |
1da177e4 LT |
700 | } |
701 | ||
9251644a | 702 | void usb_remove_sysfs_intf_files(struct usb_interface *intf) |
1da177e4 | 703 | { |
aa084f3e | 704 | struct device *dev = &intf->dev; |
1da177e4 | 705 | |
aa084f3e AS |
706 | usb_remove_intf_ep_files(intf); |
707 | device_remove_file(dev, &dev_attr_interface); | |
708 | sysfs_remove_group(&dev->kobj, &intf_attr_grp); | |
165fe97e | 709 | sysfs_remove_group(&intf->dev.kobj, &intf_assoc_attr_grp); |
1da177e4 | 710 | } |