Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * ether.c -- Ethernet gadget driver, with CDC and non-CDC options | |
3 | * | |
0391c828 | 4 | * Copyright (C) 2003-2005,2008 David Brownell |
1da177e4 | 5 | * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger |
0391c828 | 6 | * Copyright (C) 2008 Nokia Corporation |
1da177e4 LT |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
1da177e4 LT |
12 | */ |
13 | ||
0cf4f2de | 14 | /* #define VERBOSE_DEBUG */ |
1da177e4 | 15 | |
1da177e4 | 16 | #include <linux/kernel.h> |
396cda90 MN |
17 | |
18 | #if defined USB_ETH_RNDIS | |
19 | # undef USB_ETH_RNDIS | |
20 | #endif | |
21 | #ifdef CONFIG_USB_ETH_RNDIS | |
22 | # define USB_ETH_RNDIS y | |
23 | #endif | |
24 | ||
0391c828 | 25 | #include "u_ether.h" |
1da177e4 | 26 | |
1da177e4 LT |
27 | |
28 | /* | |
29 | * Ethernet gadget driver -- with CDC and non-CDC options | |
30 | * Builds on hardware support for a full duplex link. | |
31 | * | |
32 | * CDC Ethernet is the standard USB solution for sending Ethernet frames | |
33 | * using USB. Real hardware tends to use the same framing protocol but look | |
34 | * different for control features. This driver strongly prefers to use | |
35 | * this USB-IF standard as its open-systems interoperability solution; | |
36 | * most host side USB stacks (except from Microsoft) support it. | |
37 | * | |
0391c828 DB |
38 | * This is sometimes called "CDC ECM" (Ethernet Control Model) to support |
39 | * TLA-soup. "CDC ACM" (Abstract Control Model) is for modems, and a new | |
40 | * "CDC EEM" (Ethernet Emulation Model) is starting to spread. | |
41 | * | |
42 | * There's some hardware that can't talk CDC ECM. We make that hardware | |
1da177e4 | 43 | * implement a "minimalist" vendor-agnostic CDC core: same framing, but |
11d54898 DB |
44 | * link-level setup only requires activating the configuration. Only the |
45 | * endpoint descriptors, and product/vendor IDs, are relevant; no control | |
46 | * operations are available. Linux supports it, but other host operating | |
47 | * systems may not. (This is a subset of CDC Ethernet.) | |
48 | * | |
49 | * It turns out that if you add a few descriptors to that "CDC Subset", | |
50 | * (Windows) host side drivers from MCCI can treat it as one submode of | |
51 | * a proprietary scheme called "SAFE" ... without needing to know about | |
52 | * specific product/vendor IDs. So we do that, making it easier to use | |
53 | * those MS-Windows drivers. Those added descriptors make it resemble a | |
54 | * CDC MDLM device, but they don't change device behavior at all. (See | |
55 | * MCCI Engineering report 950198 "SAFE Networking Functions".) | |
1da177e4 LT |
56 | * |
57 | * A third option is also in use. Rather than CDC Ethernet, or something | |
58 | * simpler, Microsoft pushes their own approach: RNDIS. The published | |
59 | * RNDIS specs are ambiguous and appear to be incomplete, and are also | |
0391c828 | 60 | * needlessly complex. They borrow more from CDC ACM than CDC ECM. |
1da177e4 LT |
61 | */ |
62 | ||
63 | #define DRIVER_DESC "Ethernet Gadget" | |
0391c828 | 64 | #define DRIVER_VERSION "Memorial Day 2008" |
1da177e4 | 65 | |
396cda90 | 66 | #ifdef USB_ETH_RNDIS |
0391c828 DB |
67 | #define PREFIX "RNDIS/" |
68 | #else | |
69 | #define PREFIX "" | |
1da177e4 LT |
70 | #endif |
71 | ||
0391c828 DB |
72 | /* |
73 | * This driver aims for interoperability by using CDC ECM unless | |
74 | * | |
75 | * can_support_ecm() | |
1da177e4 | 76 | * |
0391c828 DB |
77 | * returns false, in which case it supports the CDC Subset. By default, |
78 | * that returns true; most hardware has no problems with CDC ECM, that's | |
79 | * a good default. Previous versions of this driver had no default; this | |
80 | * version changes that, removing overhead for new controller support. | |
81 | * | |
82 | * IF YOUR HARDWARE CAN'T SUPPORT CDC ECM, UPDATE THAT ROUTINE! | |
1da177e4 | 83 | */ |
1da177e4 | 84 | |
0391c828 DB |
85 | static inline bool has_rndis(void) |
86 | { | |
396cda90 | 87 | #ifdef USB_ETH_RNDIS |
0391c828 DB |
88 | return true; |
89 | #else | |
90 | return false; | |
91 | #endif | |
92 | } | |
93 | ||
cbbd14a9 AP |
94 | #include <linux/module.h> |
95 | ||
1da177e4 LT |
96 | /*-------------------------------------------------------------------------*/ |
97 | ||
33376c1c DB |
98 | /* |
99 | * Kbuild is not very cooperative with respect to linking separately | |
100 | * compiled library objects into one module. So for now we won't use | |
101 | * separate compilation ... ensuring init/exit sections work to shrink | |
102 | * the runtime footprint, and giving us at least some parts of what | |
103 | * a "gcc --combine ... part1.c part2.c part3.c ... " build would. | |
104 | */ | |
9c62ce83 | 105 | #include "u_ecm.h" |
8cedba7c | 106 | #define USB_FSUBSET_INCLUDED |
33376c1c | 107 | #include "f_subset.c" |
396cda90 | 108 | #ifdef USB_ETH_RNDIS |
33376c1c | 109 | #include "f_rndis.c" |
cbbd14a9 | 110 | #include "rndis.h" |
33376c1c | 111 | #endif |
b29002a1 | 112 | |
94b5573e | 113 | #include "u_eem.h" |
33376c1c DB |
114 | |
115 | /*-------------------------------------------------------------------------*/ | |
7d16e8d3 | 116 | USB_GADGET_COMPOSITE_OPTIONS(); |
33376c1c | 117 | |
f1a1823f AP |
118 | USB_ETHERNET_MODULE_PARAMETERS(); |
119 | ||
1da177e4 LT |
120 | /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! |
121 | * Instead: allocate your own, using normal USB-IF procedures. | |
122 | */ | |
123 | ||
124 | /* Thanks to NetChip Technologies for donating this product ID. | |
125 | * It's for devices with only CDC Ethernet configurations. | |
126 | */ | |
0391c828 DB |
127 | #define CDC_VENDOR_NUM 0x0525 /* NetChip */ |
128 | #define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */ | |
1da177e4 LT |
129 | |
130 | /* For hardware that can't talk CDC, we use the same vendor ID that | |
131 | * ARM Linux has used for ethernet-over-usb, both with sa1100 and | |
132 | * with pxa250. We're protocol-compatible, if the host-side drivers | |
133 | * use the endpoint descriptors. bcdDevice (version) is nonzero, so | |
134 | * drivers that need to hard-wire endpoint numbers have a hook. | |
135 | * | |
136 | * The protocol is a minimal subset of CDC Ether, which works on any bulk | |
137 | * hardware that's not deeply broken ... even on hardware that can't talk | |
138 | * RNDIS (like SA-1100, with no interrupt endpoint, or anything that | |
139 | * doesn't handle control-OUT). | |
140 | */ | |
141 | #define SIMPLE_VENDOR_NUM 0x049f | |
142 | #define SIMPLE_PRODUCT_NUM 0x505a | |
143 | ||
144 | /* For hardware that can talk RNDIS and either of the above protocols, | |
145 | * use this ID ... the windows INF files will know it. Unless it's | |
146 | * used with CDC Ethernet, Linux 2.4 hosts will need updates to choose | |
147 | * the non-RNDIS configuration. | |
148 | */ | |
149 | #define RNDIS_VENDOR_NUM 0x0525 /* NetChip */ | |
150 | #define RNDIS_PRODUCT_NUM 0xa4a2 /* Ethernet/RNDIS Gadget */ | |
151 | ||
9b39e9dd | 152 | /* For EEM gadgets */ |
4238ef54 BN |
153 | #define EEM_VENDOR_NUM 0x1d6b /* Linux Foundation */ |
154 | #define EEM_PRODUCT_NUM 0x0102 /* EEM Gadget */ | |
9b39e9dd | 155 | |
1da177e4 LT |
156 | /*-------------------------------------------------------------------------*/ |
157 | ||
0391c828 | 158 | static struct usb_device_descriptor device_desc = { |
1da177e4 LT |
159 | .bLength = sizeof device_desc, |
160 | .bDescriptorType = USB_DT_DEVICE, | |
161 | ||
551509d2 | 162 | .bcdUSB = cpu_to_le16 (0x0200), |
1da177e4 LT |
163 | |
164 | .bDeviceClass = USB_CLASS_COMM, | |
165 | .bDeviceSubClass = 0, | |
166 | .bDeviceProtocol = 0, | |
0391c828 | 167 | /* .bMaxPacketSize0 = f(hardware) */ |
1da177e4 | 168 | |
0391c828 DB |
169 | /* Vendor and product id defaults change according to what configs |
170 | * we support. (As does bNumConfigurations.) These values can | |
171 | * also be overridden by module parameters. | |
172 | */ | |
551509d2 HH |
173 | .idVendor = cpu_to_le16 (CDC_VENDOR_NUM), |
174 | .idProduct = cpu_to_le16 (CDC_PRODUCT_NUM), | |
0391c828 DB |
175 | /* .bcdDevice = f(hardware) */ |
176 | /* .iManufacturer = DYNAMIC */ | |
177 | /* .iProduct = DYNAMIC */ | |
178 | /* NO SERIAL NUMBER */ | |
1da177e4 LT |
179 | .bNumConfigurations = 1, |
180 | }; | |
181 | ||
0391c828 | 182 | static struct usb_otg_descriptor otg_descriptor = { |
1da177e4 LT |
183 | .bLength = sizeof otg_descriptor, |
184 | .bDescriptorType = USB_DT_OTG, | |
185 | ||
0391c828 DB |
186 | /* REVISIT SRP-only hardware is possible, although |
187 | * it would not be called "OTG" ... | |
188 | */ | |
189 | .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, | |
1da177e4 | 190 | }; |
7e27f18c | 191 | |
0391c828 DB |
192 | static const struct usb_descriptor_header *otg_desc[] = { |
193 | (struct usb_descriptor_header *) &otg_descriptor, | |
194 | NULL, | |
1da177e4 | 195 | }; |
1da177e4 | 196 | |
0391c828 | 197 | static struct usb_string strings_dev[] = { |
cc2683c3 | 198 | [USB_GADGET_MANUFACTURER_IDX].s = "", |
276e2e4f SAS |
199 | [USB_GADGET_PRODUCT_IDX].s = PREFIX DRIVER_DESC, |
200 | [USB_GADGET_SERIAL_IDX].s = "", | |
0391c828 | 201 | { } /* end of list */ |
1da177e4 LT |
202 | }; |
203 | ||
0391c828 DB |
204 | static struct usb_gadget_strings stringtab_dev = { |
205 | .language = 0x0409, /* en-us */ | |
206 | .strings = strings_dev, | |
1da177e4 LT |
207 | }; |
208 | ||
0391c828 DB |
209 | static struct usb_gadget_strings *dev_strings[] = { |
210 | &stringtab_dev, | |
211 | NULL, | |
1da177e4 LT |
212 | }; |
213 | ||
f1a1823f | 214 | static u8 host_mac[ETH_ALEN]; |
d6a01439 | 215 | static struct eth_dev *the_dev; |
9c62ce83 AP |
216 | |
217 | static struct usb_function_instance *fi_ecm; | |
218 | static struct usb_function *f_ecm; | |
219 | ||
94b5573e AP |
220 | static struct usb_function_instance *fi_eem; |
221 | static struct usb_function *f_eem; | |
222 | ||
0391c828 | 223 | /*-------------------------------------------------------------------------*/ |
11d54898 | 224 | |
0391c828 DB |
225 | /* |
226 | * We may not have an RNDIS configuration, but if we do it needs to be | |
227 | * the first one present. That's to make Microsoft's drivers happy, | |
228 | * and to follow DOCSIS 1.0 (cable modem standard). | |
11d54898 | 229 | */ |
e12995ec | 230 | static int __init rndis_do_config(struct usb_configuration *c) |
0391c828 DB |
231 | { |
232 | /* FIXME alloc iConfiguration string, set it in c->strings */ | |
11d54898 | 233 | |
0391c828 DB |
234 | if (gadget_is_otg(c->cdev->gadget)) { |
235 | c->descriptors = otg_desc; | |
236 | c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
237 | } | |
1da177e4 | 238 | |
f1a1823f | 239 | return rndis_bind_config(c, host_mac, the_dev); |
0391c828 | 240 | } |
1da177e4 | 241 | |
0391c828 DB |
242 | static struct usb_configuration rndis_config_driver = { |
243 | .label = "RNDIS", | |
0391c828 DB |
244 | .bConfigurationValue = 2, |
245 | /* .iConfiguration = DYNAMIC */ | |
246 | .bmAttributes = USB_CONFIG_ATT_SELFPOWER, | |
1da177e4 LT |
247 | }; |
248 | ||
0391c828 | 249 | /*-------------------------------------------------------------------------*/ |
1da177e4 | 250 | |
c9188ad2 | 251 | #ifdef CONFIG_USB_ETH_EEM |
90ab5ee9 | 252 | static bool use_eem = 1; |
9b39e9dd | 253 | #else |
90ab5ee9 | 254 | static bool use_eem; |
9b39e9dd BN |
255 | #endif |
256 | module_param(use_eem, bool, 0); | |
257 | MODULE_PARM_DESC(use_eem, "use CDC EEM mode"); | |
258 | ||
0391c828 | 259 | /* |
9b39e9dd | 260 | * We _always_ have an ECM, CDC Subset, or EEM configuration. |
1da177e4 | 261 | */ |
e12995ec | 262 | static int __init eth_do_config(struct usb_configuration *c) |
0391c828 | 263 | { |
9c62ce83 AP |
264 | int status = 0; |
265 | ||
0391c828 | 266 | /* FIXME alloc iConfiguration string, set it in c->strings */ |
7e27f18c | 267 | |
0391c828 DB |
268 | if (gadget_is_otg(c->cdev->gadget)) { |
269 | c->descriptors = otg_desc; | |
270 | c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
271 | } | |
1da177e4 | 272 | |
94b5573e AP |
273 | if (use_eem) { |
274 | f_eem = usb_get_function(fi_eem); | |
275 | if (IS_ERR(f_eem)) | |
276 | return PTR_ERR(f_eem); | |
277 | ||
278 | status = usb_add_function(c, f_eem); | |
279 | if (status < 0) | |
280 | usb_put_function(f_eem); | |
281 | ||
282 | return status; | |
283 | } else if (can_support_ecm(c->cdev->gadget)) { | |
9c62ce83 AP |
284 | f_ecm = usb_get_function(fi_ecm); |
285 | if (IS_ERR(f_ecm)) | |
286 | return PTR_ERR(f_ecm); | |
287 | ||
288 | status = usb_add_function(c, f_ecm); | |
289 | if (status < 0) | |
290 | usb_put_function(f_ecm); | |
291 | ||
292 | return status; | |
293 | } else | |
f1a1823f | 294 | return geth_bind_config(c, host_mac, the_dev); |
9c62ce83 | 295 | |
0391c828 | 296 | } |
1da177e4 | 297 | |
0391c828 DB |
298 | static struct usb_configuration eth_config_driver = { |
299 | /* .label = f(hardware) */ | |
0391c828 DB |
300 | .bConfigurationValue = 1, |
301 | /* .iConfiguration = DYNAMIC */ | |
302 | .bmAttributes = USB_CONFIG_ATT_SELFPOWER, | |
1da177e4 LT |
303 | }; |
304 | ||
0391c828 | 305 | /*-------------------------------------------------------------------------*/ |
1da177e4 | 306 | |
e12995ec | 307 | static int __init eth_bind(struct usb_composite_dev *cdev) |
0391c828 | 308 | { |
0391c828 | 309 | struct usb_gadget *gadget = cdev->gadget; |
94b5573e | 310 | struct f_eem_opts *eem_opts = NULL; |
9c62ce83 | 311 | struct f_ecm_opts *ecm_opts = NULL; |
0391c828 | 312 | int status; |
1da177e4 | 313 | |
94b5573e | 314 | if (!use_eem && !can_support_ecm(gadget)) { |
9c62ce83 AP |
315 | /* set up network link layer */ |
316 | the_dev = gether_setup(cdev->gadget, dev_addr, host_addr, | |
317 | host_mac, qmult); | |
318 | if (IS_ERR(the_dev)) | |
319 | return PTR_ERR(the_dev); | |
320 | } | |
1da177e4 | 321 | |
0391c828 | 322 | /* set up main config label and device descriptor */ |
9b39e9dd BN |
323 | if (use_eem) { |
324 | /* EEM */ | |
94b5573e AP |
325 | fi_eem = usb_get_function_instance("eem"); |
326 | if (IS_ERR(fi_eem)) | |
327 | return PTR_ERR(fi_eem); | |
328 | ||
329 | eem_opts = container_of(fi_eem, struct f_eem_opts, func_inst); | |
330 | ||
331 | gether_set_qmult(eem_opts->net, qmult); | |
332 | if (!gether_set_host_addr(eem_opts->net, host_addr)) | |
333 | pr_info("using host ethernet address: %s", host_addr); | |
334 | if (!gether_set_dev_addr(eem_opts->net, dev_addr)) | |
335 | pr_info("using self ethernet address: %s", dev_addr); | |
336 | ||
337 | the_dev = netdev_priv(eem_opts->net); | |
338 | ||
9b39e9dd BN |
339 | eth_config_driver.label = "CDC Ethernet (EEM)"; |
340 | device_desc.idVendor = cpu_to_le16(EEM_VENDOR_NUM); | |
341 | device_desc.idProduct = cpu_to_le16(EEM_PRODUCT_NUM); | |
9c62ce83 | 342 | } else if (can_support_ecm(gadget)) { |
0391c828 | 343 | /* ECM */ |
9c62ce83 AP |
344 | |
345 | fi_ecm = usb_get_function_instance("ecm"); | |
346 | if (IS_ERR(fi_ecm)) | |
347 | return PTR_ERR(fi_ecm); | |
348 | ||
349 | ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); | |
350 | ||
351 | gether_set_qmult(ecm_opts->net, qmult); | |
352 | if (!gether_set_host_addr(ecm_opts->net, host_addr)) | |
353 | pr_info("using host ethernet address: %s", host_addr); | |
354 | if (!gether_set_dev_addr(ecm_opts->net, dev_addr)) | |
355 | pr_info("using self ethernet address: %s", dev_addr); | |
356 | ||
357 | the_dev = netdev_priv(ecm_opts->net); | |
358 | ||
0391c828 DB |
359 | eth_config_driver.label = "CDC Ethernet (ECM)"; |
360 | } else { | |
361 | /* CDC Subset */ | |
362 | eth_config_driver.label = "CDC Subset/SAFE"; | |
1da177e4 | 363 | |
4e19f220 DB |
364 | device_desc.idVendor = cpu_to_le16(SIMPLE_VENDOR_NUM); |
365 | device_desc.idProduct = cpu_to_le16(SIMPLE_PRODUCT_NUM); | |
366 | if (!has_rndis()) | |
367 | device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; | |
0391c828 | 368 | } |
1da177e4 | 369 | |
0391c828 DB |
370 | if (has_rndis()) { |
371 | /* RNDIS plus ECM-or-Subset */ | |
94b5573e AP |
372 | if (use_eem) { |
373 | gether_set_gadget(eem_opts->net, cdev->gadget); | |
374 | status = gether_register_netdev(eem_opts->net); | |
375 | if (status) | |
376 | goto fail; | |
377 | eem_opts->bound = true; | |
378 | gether_get_host_addr_u8(eem_opts->net, host_mac); | |
379 | } else if (can_support_ecm(gadget)) { | |
9c62ce83 AP |
380 | gether_set_gadget(ecm_opts->net, cdev->gadget); |
381 | status = gether_register_netdev(ecm_opts->net); | |
382 | if (status) | |
383 | goto fail; | |
384 | ecm_opts->bound = true; | |
385 | gether_get_host_addr_u8(ecm_opts->net, host_mac); | |
386 | } | |
387 | ||
4e19f220 DB |
388 | device_desc.idVendor = cpu_to_le16(RNDIS_VENDOR_NUM); |
389 | device_desc.idProduct = cpu_to_le16(RNDIS_PRODUCT_NUM); | |
0391c828 DB |
390 | device_desc.bNumConfigurations = 2; |
391 | } | |
1da177e4 | 392 | |
0391c828 DB |
393 | /* Allocate string descriptor numbers ... note that string |
394 | * contents can be overridden by the composite_dev glue. | |
395 | */ | |
1da177e4 | 396 | |
e1f15ccb | 397 | status = usb_string_ids_tab(cdev, strings_dev); |
0391c828 DB |
398 | if (status < 0) |
399 | goto fail; | |
276e2e4f SAS |
400 | device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; |
401 | device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; | |
1da177e4 | 402 | |
0391c828 DB |
403 | /* register our configuration(s); RNDIS first, if it's used */ |
404 | if (has_rndis()) { | |
c9bfff9c UKK |
405 | status = usb_add_config(cdev, &rndis_config_driver, |
406 | rndis_do_config); | |
0391c828 DB |
407 | if (status < 0) |
408 | goto fail; | |
409 | } | |
1da177e4 | 410 | |
c9bfff9c | 411 | status = usb_add_config(cdev, ð_config_driver, eth_do_config); |
0391c828 DB |
412 | if (status < 0) |
413 | goto fail; | |
1da177e4 | 414 | |
7d16e8d3 | 415 | usb_composite_overwrite_options(cdev, &coverwrite); |
33376c1c DB |
416 | dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n", |
417 | DRIVER_DESC); | |
1da177e4 | 418 | |
0391c828 | 419 | return 0; |
1da177e4 | 420 | |
0391c828 | 421 | fail: |
94b5573e | 422 | if (!use_eem && !can_support_ecm(gadget)) |
9c62ce83 | 423 | gether_cleanup(the_dev); |
94b5573e AP |
424 | else if (use_eem) |
425 | usb_put_function_instance(fi_eem); | |
9c62ce83 AP |
426 | else |
427 | usb_put_function_instance(fi_ecm); | |
0391c828 DB |
428 | return status; |
429 | } | |
1da177e4 | 430 | |
0391c828 DB |
431 | static int __exit eth_unbind(struct usb_composite_dev *cdev) |
432 | { | |
94b5573e | 433 | if (!use_eem && !can_support_ecm(cdev->gadget)) |
9c62ce83 | 434 | gether_cleanup(the_dev); |
94b5573e AP |
435 | else if (use_eem) |
436 | usb_put_function_instance(fi_eem); | |
9c62ce83 AP |
437 | else |
438 | usb_put_function_instance(fi_ecm); | |
0391c828 DB |
439 | return 0; |
440 | } | |
1da177e4 | 441 | |
c2ec75c2 | 442 | static __refdata struct usb_composite_driver eth_driver = { |
0391c828 DB |
443 | .name = "g_ether", |
444 | .dev = &device_desc, | |
445 | .strings = dev_strings, | |
04617db7 | 446 | .max_speed = USB_SPEED_SUPER, |
03e42bd5 | 447 | .bind = eth_bind, |
0391c828 | 448 | .unbind = __exit_p(eth_unbind), |
1da177e4 LT |
449 | }; |
450 | ||
0391c828 DB |
451 | MODULE_DESCRIPTION(PREFIX DRIVER_DESC); |
452 | MODULE_AUTHOR("David Brownell, Benedikt Spanger"); | |
453 | MODULE_LICENSE("GPL"); | |
1da177e4 | 454 | |
0391c828 | 455 | static int __init init(void) |
1da177e4 | 456 | { |
03e42bd5 | 457 | return usb_composite_probe(ð_driver); |
1da177e4 | 458 | } |
0391c828 | 459 | module_init(init); |
1da177e4 | 460 | |
0391c828 | 461 | static void __exit cleanup(void) |
1da177e4 | 462 | { |
0391c828 | 463 | usb_composite_unregister(ð_driver); |
1da177e4 | 464 | } |
0391c828 | 465 | module_exit(cleanup); |