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> |
8af5232d | 17 | #include <linux/netdevice.h> |
396cda90 MN |
18 | |
19 | #if defined USB_ETH_RNDIS | |
20 | # undef USB_ETH_RNDIS | |
21 | #endif | |
22 | #ifdef CONFIG_USB_ETH_RNDIS | |
23 | # define USB_ETH_RNDIS y | |
24 | #endif | |
25 | ||
0391c828 | 26 | #include "u_ether.h" |
1da177e4 | 27 | |
1da177e4 LT |
28 | |
29 | /* | |
30 | * Ethernet gadget driver -- with CDC and non-CDC options | |
31 | * Builds on hardware support for a full duplex link. | |
32 | * | |
33 | * CDC Ethernet is the standard USB solution for sending Ethernet frames | |
34 | * using USB. Real hardware tends to use the same framing protocol but look | |
35 | * different for control features. This driver strongly prefers to use | |
36 | * this USB-IF standard as its open-systems interoperability solution; | |
37 | * most host side USB stacks (except from Microsoft) support it. | |
38 | * | |
0391c828 DB |
39 | * This is sometimes called "CDC ECM" (Ethernet Control Model) to support |
40 | * TLA-soup. "CDC ACM" (Abstract Control Model) is for modems, and a new | |
41 | * "CDC EEM" (Ethernet Emulation Model) is starting to spread. | |
42 | * | |
43 | * There's some hardware that can't talk CDC ECM. We make that hardware | |
1da177e4 | 44 | * implement a "minimalist" vendor-agnostic CDC core: same framing, but |
11d54898 DB |
45 | * link-level setup only requires activating the configuration. Only the |
46 | * endpoint descriptors, and product/vendor IDs, are relevant; no control | |
47 | * operations are available. Linux supports it, but other host operating | |
48 | * systems may not. (This is a subset of CDC Ethernet.) | |
49 | * | |
50 | * It turns out that if you add a few descriptors to that "CDC Subset", | |
51 | * (Windows) host side drivers from MCCI can treat it as one submode of | |
52 | * a proprietary scheme called "SAFE" ... without needing to know about | |
53 | * specific product/vendor IDs. So we do that, making it easier to use | |
54 | * those MS-Windows drivers. Those added descriptors make it resemble a | |
55 | * CDC MDLM device, but they don't change device behavior at all. (See | |
56 | * MCCI Engineering report 950198 "SAFE Networking Functions".) | |
1da177e4 LT |
57 | * |
58 | * A third option is also in use. Rather than CDC Ethernet, or something | |
59 | * simpler, Microsoft pushes their own approach: RNDIS. The published | |
60 | * RNDIS specs are ambiguous and appear to be incomplete, and are also | |
0391c828 | 61 | * needlessly complex. They borrow more from CDC ACM than CDC ECM. |
1da177e4 LT |
62 | */ |
63 | ||
64 | #define DRIVER_DESC "Ethernet Gadget" | |
0391c828 | 65 | #define DRIVER_VERSION "Memorial Day 2008" |
1da177e4 | 66 | |
396cda90 | 67 | #ifdef USB_ETH_RNDIS |
0391c828 DB |
68 | #define PREFIX "RNDIS/" |
69 | #else | |
70 | #define PREFIX "" | |
1da177e4 LT |
71 | #endif |
72 | ||
0391c828 DB |
73 | /* |
74 | * This driver aims for interoperability by using CDC ECM unless | |
75 | * | |
76 | * can_support_ecm() | |
1da177e4 | 77 | * |
0391c828 DB |
78 | * returns false, in which case it supports the CDC Subset. By default, |
79 | * that returns true; most hardware has no problems with CDC ECM, that's | |
80 | * a good default. Previous versions of this driver had no default; this | |
81 | * version changes that, removing overhead for new controller support. | |
82 | * | |
83 | * IF YOUR HARDWARE CAN'T SUPPORT CDC ECM, UPDATE THAT ROUTINE! | |
1da177e4 | 84 | */ |
1da177e4 | 85 | |
0391c828 DB |
86 | static inline bool has_rndis(void) |
87 | { | |
396cda90 | 88 | #ifdef USB_ETH_RNDIS |
0391c828 DB |
89 | return true; |
90 | #else | |
91 | return false; | |
92 | #endif | |
93 | } | |
94 | ||
cbbd14a9 AP |
95 | #include <linux/module.h> |
96 | ||
1da177e4 LT |
97 | /*-------------------------------------------------------------------------*/ |
98 | ||
33376c1c DB |
99 | /* |
100 | * Kbuild is not very cooperative with respect to linking separately | |
101 | * compiled library objects into one module. So for now we won't use | |
102 | * separate compilation ... ensuring init/exit sections work to shrink | |
103 | * the runtime footprint, and giving us at least some parts of what | |
104 | * a "gcc --combine ... part1.c part2.c part3.c ... " build would. | |
105 | */ | |
9c62ce83 | 106 | #include "u_ecm.h" |
8af5232d | 107 | #include "u_gether.h" |
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 | ||
8af5232d AP |
223 | static struct usb_function_instance *fi_geth; |
224 | static struct usb_function *f_geth; | |
225 | ||
0391c828 | 226 | /*-------------------------------------------------------------------------*/ |
11d54898 | 227 | |
0391c828 DB |
228 | /* |
229 | * We may not have an RNDIS configuration, but if we do it needs to be | |
230 | * the first one present. That's to make Microsoft's drivers happy, | |
231 | * and to follow DOCSIS 1.0 (cable modem standard). | |
11d54898 | 232 | */ |
e12995ec | 233 | static int __init rndis_do_config(struct usb_configuration *c) |
0391c828 DB |
234 | { |
235 | /* FIXME alloc iConfiguration string, set it in c->strings */ | |
11d54898 | 236 | |
0391c828 DB |
237 | if (gadget_is_otg(c->cdev->gadget)) { |
238 | c->descriptors = otg_desc; | |
239 | c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
240 | } | |
1da177e4 | 241 | |
f1a1823f | 242 | return rndis_bind_config(c, host_mac, the_dev); |
0391c828 | 243 | } |
1da177e4 | 244 | |
0391c828 DB |
245 | static struct usb_configuration rndis_config_driver = { |
246 | .label = "RNDIS", | |
0391c828 DB |
247 | .bConfigurationValue = 2, |
248 | /* .iConfiguration = DYNAMIC */ | |
249 | .bmAttributes = USB_CONFIG_ATT_SELFPOWER, | |
1da177e4 LT |
250 | }; |
251 | ||
0391c828 | 252 | /*-------------------------------------------------------------------------*/ |
1da177e4 | 253 | |
c9188ad2 | 254 | #ifdef CONFIG_USB_ETH_EEM |
90ab5ee9 | 255 | static bool use_eem = 1; |
9b39e9dd | 256 | #else |
90ab5ee9 | 257 | static bool use_eem; |
9b39e9dd BN |
258 | #endif |
259 | module_param(use_eem, bool, 0); | |
260 | MODULE_PARM_DESC(use_eem, "use CDC EEM mode"); | |
261 | ||
0391c828 | 262 | /* |
9b39e9dd | 263 | * We _always_ have an ECM, CDC Subset, or EEM configuration. |
1da177e4 | 264 | */ |
e12995ec | 265 | static int __init eth_do_config(struct usb_configuration *c) |
0391c828 | 266 | { |
9c62ce83 AP |
267 | int status = 0; |
268 | ||
0391c828 | 269 | /* FIXME alloc iConfiguration string, set it in c->strings */ |
7e27f18c | 270 | |
0391c828 DB |
271 | if (gadget_is_otg(c->cdev->gadget)) { |
272 | c->descriptors = otg_desc; | |
273 | c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
274 | } | |
1da177e4 | 275 | |
94b5573e AP |
276 | if (use_eem) { |
277 | f_eem = usb_get_function(fi_eem); | |
278 | if (IS_ERR(f_eem)) | |
279 | return PTR_ERR(f_eem); | |
280 | ||
281 | status = usb_add_function(c, f_eem); | |
282 | if (status < 0) | |
283 | usb_put_function(f_eem); | |
284 | ||
285 | return status; | |
286 | } else if (can_support_ecm(c->cdev->gadget)) { | |
9c62ce83 AP |
287 | f_ecm = usb_get_function(fi_ecm); |
288 | if (IS_ERR(f_ecm)) | |
289 | return PTR_ERR(f_ecm); | |
290 | ||
291 | status = usb_add_function(c, f_ecm); | |
292 | if (status < 0) | |
293 | usb_put_function(f_ecm); | |
294 | ||
295 | return status; | |
8af5232d AP |
296 | } else { |
297 | f_geth = usb_get_function(fi_geth); | |
298 | if (IS_ERR(f_geth)) | |
299 | return PTR_ERR(f_geth); | |
300 | ||
301 | status = usb_add_function(c, f_geth); | |
302 | if (status < 0) | |
303 | usb_put_function(f_geth); | |
304 | ||
305 | return status; | |
306 | } | |
9c62ce83 | 307 | |
0391c828 | 308 | } |
1da177e4 | 309 | |
0391c828 DB |
310 | static struct usb_configuration eth_config_driver = { |
311 | /* .label = f(hardware) */ | |
0391c828 DB |
312 | .bConfigurationValue = 1, |
313 | /* .iConfiguration = DYNAMIC */ | |
314 | .bmAttributes = USB_CONFIG_ATT_SELFPOWER, | |
1da177e4 LT |
315 | }; |
316 | ||
0391c828 | 317 | /*-------------------------------------------------------------------------*/ |
1da177e4 | 318 | |
e12995ec | 319 | static int __init eth_bind(struct usb_composite_dev *cdev) |
0391c828 | 320 | { |
0391c828 | 321 | struct usb_gadget *gadget = cdev->gadget; |
94b5573e | 322 | struct f_eem_opts *eem_opts = NULL; |
9c62ce83 | 323 | struct f_ecm_opts *ecm_opts = NULL; |
8af5232d AP |
324 | struct f_gether_opts *geth_opts = NULL; |
325 | struct net_device *net; | |
0391c828 | 326 | int status; |
1da177e4 | 327 | |
0391c828 | 328 | /* set up main config label and device descriptor */ |
9b39e9dd BN |
329 | if (use_eem) { |
330 | /* EEM */ | |
94b5573e AP |
331 | fi_eem = usb_get_function_instance("eem"); |
332 | if (IS_ERR(fi_eem)) | |
333 | return PTR_ERR(fi_eem); | |
334 | ||
335 | eem_opts = container_of(fi_eem, struct f_eem_opts, func_inst); | |
336 | ||
8af5232d AP |
337 | net = eem_opts->net; |
338 | the_dev = netdev_priv(net); | |
94b5573e | 339 | |
9b39e9dd BN |
340 | eth_config_driver.label = "CDC Ethernet (EEM)"; |
341 | device_desc.idVendor = cpu_to_le16(EEM_VENDOR_NUM); | |
342 | device_desc.idProduct = cpu_to_le16(EEM_PRODUCT_NUM); | |
9c62ce83 | 343 | } else if (can_support_ecm(gadget)) { |
0391c828 | 344 | /* ECM */ |
9c62ce83 AP |
345 | |
346 | fi_ecm = usb_get_function_instance("ecm"); | |
347 | if (IS_ERR(fi_ecm)) | |
348 | return PTR_ERR(fi_ecm); | |
349 | ||
350 | ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); | |
351 | ||
8af5232d AP |
352 | net = ecm_opts->net; |
353 | the_dev = netdev_priv(net); | |
9c62ce83 | 354 | |
0391c828 DB |
355 | eth_config_driver.label = "CDC Ethernet (ECM)"; |
356 | } else { | |
357 | /* CDC Subset */ | |
8af5232d AP |
358 | |
359 | fi_geth = usb_get_function_instance("geth"); | |
360 | if (IS_ERR(fi_geth)) | |
361 | return PTR_ERR(fi_geth); | |
362 | ||
363 | geth_opts = container_of(fi_geth, struct f_gether_opts, | |
364 | func_inst); | |
365 | ||
366 | net = geth_opts->net; | |
367 | the_dev = netdev_priv(net); | |
368 | ||
0391c828 | 369 | eth_config_driver.label = "CDC Subset/SAFE"; |
1da177e4 | 370 | |
4e19f220 DB |
371 | device_desc.idVendor = cpu_to_le16(SIMPLE_VENDOR_NUM); |
372 | device_desc.idProduct = cpu_to_le16(SIMPLE_PRODUCT_NUM); | |
373 | if (!has_rndis()) | |
374 | device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; | |
0391c828 | 375 | } |
1da177e4 | 376 | |
8af5232d AP |
377 | gether_set_qmult(net, qmult); |
378 | if (!gether_set_host_addr(net, host_addr)) | |
379 | pr_info("using host ethernet address: %s", host_addr); | |
380 | if (!gether_set_dev_addr(net, dev_addr)) | |
381 | pr_info("using self ethernet address: %s", dev_addr); | |
382 | ||
0391c828 DB |
383 | if (has_rndis()) { |
384 | /* RNDIS plus ECM-or-Subset */ | |
8af5232d AP |
385 | gether_set_gadget(net, cdev->gadget); |
386 | status = gether_register_netdev(net); | |
387 | if (status) | |
388 | goto fail; | |
389 | gether_get_host_addr_u8(net, host_mac); | |
390 | ||
391 | if (use_eem) | |
94b5573e | 392 | eem_opts->bound = true; |
8af5232d | 393 | else if (can_support_ecm(gadget)) |
9c62ce83 | 394 | ecm_opts->bound = true; |
8af5232d AP |
395 | else |
396 | geth_opts->bound = true; | |
9c62ce83 | 397 | |
4e19f220 DB |
398 | device_desc.idVendor = cpu_to_le16(RNDIS_VENDOR_NUM); |
399 | device_desc.idProduct = cpu_to_le16(RNDIS_PRODUCT_NUM); | |
0391c828 DB |
400 | device_desc.bNumConfigurations = 2; |
401 | } | |
1da177e4 | 402 | |
0391c828 DB |
403 | /* Allocate string descriptor numbers ... note that string |
404 | * contents can be overridden by the composite_dev glue. | |
405 | */ | |
1da177e4 | 406 | |
e1f15ccb | 407 | status = usb_string_ids_tab(cdev, strings_dev); |
0391c828 DB |
408 | if (status < 0) |
409 | goto fail; | |
276e2e4f SAS |
410 | device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; |
411 | device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; | |
1da177e4 | 412 | |
0391c828 DB |
413 | /* register our configuration(s); RNDIS first, if it's used */ |
414 | if (has_rndis()) { | |
c9bfff9c UKK |
415 | status = usb_add_config(cdev, &rndis_config_driver, |
416 | rndis_do_config); | |
0391c828 DB |
417 | if (status < 0) |
418 | goto fail; | |
419 | } | |
1da177e4 | 420 | |
c9bfff9c | 421 | status = usb_add_config(cdev, ð_config_driver, eth_do_config); |
0391c828 DB |
422 | if (status < 0) |
423 | goto fail; | |
1da177e4 | 424 | |
7d16e8d3 | 425 | usb_composite_overwrite_options(cdev, &coverwrite); |
33376c1c DB |
426 | dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n", |
427 | DRIVER_DESC); | |
1da177e4 | 428 | |
0391c828 | 429 | return 0; |
1da177e4 | 430 | |
0391c828 | 431 | fail: |
8af5232d | 432 | if (use_eem) |
94b5573e | 433 | usb_put_function_instance(fi_eem); |
8af5232d | 434 | else if (can_support_ecm(gadget)) |
9c62ce83 | 435 | usb_put_function_instance(fi_ecm); |
8af5232d AP |
436 | else |
437 | usb_put_function_instance(fi_geth); | |
0391c828 DB |
438 | return status; |
439 | } | |
1da177e4 | 440 | |
0391c828 DB |
441 | static int __exit eth_unbind(struct usb_composite_dev *cdev) |
442 | { | |
8af5232d | 443 | if (use_eem) |
94b5573e | 444 | usb_put_function_instance(fi_eem); |
8af5232d | 445 | else if (can_support_ecm(cdev->gadget)) |
9c62ce83 | 446 | usb_put_function_instance(fi_ecm); |
8af5232d AP |
447 | else |
448 | usb_put_function_instance(fi_geth); | |
0391c828 DB |
449 | return 0; |
450 | } | |
1da177e4 | 451 | |
c2ec75c2 | 452 | static __refdata struct usb_composite_driver eth_driver = { |
0391c828 DB |
453 | .name = "g_ether", |
454 | .dev = &device_desc, | |
455 | .strings = dev_strings, | |
04617db7 | 456 | .max_speed = USB_SPEED_SUPER, |
03e42bd5 | 457 | .bind = eth_bind, |
0391c828 | 458 | .unbind = __exit_p(eth_unbind), |
1da177e4 LT |
459 | }; |
460 | ||
0391c828 DB |
461 | MODULE_DESCRIPTION(PREFIX DRIVER_DESC); |
462 | MODULE_AUTHOR("David Brownell, Benedikt Spanger"); | |
463 | MODULE_LICENSE("GPL"); | |
1da177e4 | 464 | |
0391c828 | 465 | static int __init init(void) |
1da177e4 | 466 | { |
03e42bd5 | 467 | return usb_composite_probe(ð_driver); |
1da177e4 | 468 | } |
0391c828 | 469 | module_init(init); |
1da177e4 | 470 | |
0391c828 | 471 | static void __exit cleanup(void) |
1da177e4 | 472 | { |
0391c828 | 473 | usb_composite_unregister(ð_driver); |
1da177e4 | 474 | } |
0391c828 | 475 | module_exit(cleanup); |