Commit | Line | Data |
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f176a5d8 MN |
1 | /* |
2 | * multi.c -- Multifunction Composite driver | |
3 | * | |
4 | * Copyright (C) 2008 David Brownell | |
5 | * Copyright (C) 2008 Nokia Corporation | |
6 | * Copyright (C) 2009 Samsung Electronics | |
7 | * Author: Michal Nazarewicz (m.nazarewicz@samsung.com) | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/utsname.h> | |
279cc49a | 27 | #include <linux/module.h> |
f176a5d8 MN |
28 | |
29 | ||
396cda90 MN |
30 | #if defined USB_ETH_RNDIS |
31 | # undef USB_ETH_RNDIS | |
32 | #endif | |
dbe4a99d | 33 | #ifdef CONFIG_USB_G_MULTI_RNDIS |
396cda90 | 34 | # define USB_ETH_RNDIS y |
f176a5d8 MN |
35 | #endif |
36 | ||
37 | ||
38 | #define DRIVER_DESC "Multifunction Composite Gadget" | |
f176a5d8 | 39 | |
279cc49a MN |
40 | MODULE_DESCRIPTION(DRIVER_DESC); |
41 | MODULE_AUTHOR("Michal Nazarewicz"); | |
42 | MODULE_LICENSE("GPL"); | |
f176a5d8 | 43 | |
f176a5d8 | 44 | |
279cc49a | 45 | /***************************** All the files... *****************************/ |
f176a5d8 MN |
46 | |
47 | /* | |
48 | * kbuild is not very cooperative with respect to linking separately | |
49 | * compiled library objects into one module. So for now we won't use | |
50 | * separate compilation ... ensuring init/exit sections work to shrink | |
51 | * the runtime footprint, and giving us at least some parts of what | |
52 | * a "gcc --combine ... part1.c part2.c part3.c ... " build would. | |
53 | */ | |
54 | ||
55 | #include "composite.c" | |
56 | #include "usbstring.c" | |
57 | #include "config.c" | |
58 | #include "epautoconf.c" | |
59 | ||
279cc49a MN |
60 | #include "f_mass_storage.c" |
61 | ||
f176a5d8 MN |
62 | #include "u_serial.c" |
63 | #include "f_acm.c" | |
64 | ||
65 | #include "f_ecm.c" | |
66 | #include "f_subset.c" | |
396cda90 | 67 | #ifdef USB_ETH_RNDIS |
f176a5d8 MN |
68 | # include "f_rndis.c" |
69 | # include "rndis.c" | |
70 | #endif | |
71 | #include "u_ether.c" | |
72 | ||
f176a5d8 | 73 | |
279cc49a MN |
74 | |
75 | /***************************** Device Descriptor ****************************/ | |
76 | ||
1c6529e9 MN |
77 | #define MULTI_VENDOR_NUM 0x1d6b /* Linux Foundation */ |
78 | #define MULTI_PRODUCT_NUM 0x0104 /* Multifunction Composite Gadget */ | |
279cc49a MN |
79 | |
80 | ||
81 | enum { | |
82 | __MULTI_NO_CONFIG, | |
83 | #ifdef CONFIG_USB_G_MULTI_RNDIS | |
84 | MULTI_RNDIS_CONFIG_NUM, | |
85 | #endif | |
86 | #ifdef CONFIG_USB_G_MULTI_CDC | |
87 | MULTI_CDC_CONFIG_NUM, | |
88 | #endif | |
89 | }; | |
90 | ||
f176a5d8 MN |
91 | |
92 | static struct usb_device_descriptor device_desc = { | |
93 | .bLength = sizeof device_desc, | |
94 | .bDescriptorType = USB_DT_DEVICE, | |
95 | ||
96 | .bcdUSB = cpu_to_le16(0x0200), | |
97 | ||
279cc49a | 98 | .bDeviceClass = USB_CLASS_MISC /* 0xEF */, |
f176a5d8 MN |
99 | .bDeviceSubClass = 2, |
100 | .bDeviceProtocol = 1, | |
f176a5d8 MN |
101 | |
102 | /* Vendor and product id can be overridden by module parameters. */ | |
103 | .idVendor = cpu_to_le16(MULTI_VENDOR_NUM), | |
104 | .idProduct = cpu_to_le16(MULTI_PRODUCT_NUM), | |
f176a5d8 MN |
105 | }; |
106 | ||
f176a5d8 MN |
107 | |
108 | static const struct usb_descriptor_header *otg_desc[] = { | |
279cc49a MN |
109 | (struct usb_descriptor_header *) &(struct usb_otg_descriptor){ |
110 | .bLength = sizeof(struct usb_otg_descriptor), | |
111 | .bDescriptorType = USB_DT_OTG, | |
112 | ||
113 | /* | |
114 | * REVISIT SRP-only hardware is possible, although | |
115 | * it would not be called "OTG" ... | |
116 | */ | |
117 | .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, | |
118 | }, | |
f176a5d8 MN |
119 | NULL, |
120 | }; | |
121 | ||
122 | ||
279cc49a | 123 | enum { |
279cc49a MN |
124 | #ifdef CONFIG_USB_G_MULTI_RNDIS |
125 | MULTI_STRING_RNDIS_CONFIG_IDX, | |
126 | #endif | |
127 | #ifdef CONFIG_USB_G_MULTI_CDC | |
128 | MULTI_STRING_CDC_CONFIG_IDX, | |
129 | #endif | |
130 | }; | |
f176a5d8 | 131 | |
f176a5d8 | 132 | static struct usb_string strings_dev[] = { |
279cc49a MN |
133 | #ifdef CONFIG_USB_G_MULTI_RNDIS |
134 | [MULTI_STRING_RNDIS_CONFIG_IDX].s = "Multifunction with RNDIS", | |
135 | #endif | |
136 | #ifdef CONFIG_USB_G_MULTI_CDC | |
137 | [MULTI_STRING_CDC_CONFIG_IDX].s = "Multifunction with CDC ECM", | |
138 | #endif | |
f176a5d8 MN |
139 | { } /* end of list */ |
140 | }; | |
141 | ||
f176a5d8 | 142 | static struct usb_gadget_strings *dev_strings[] = { |
279cc49a MN |
143 | &(struct usb_gadget_strings){ |
144 | .language = 0x0409, /* en-us */ | |
145 | .strings = strings_dev, | |
146 | }, | |
f176a5d8 MN |
147 | NULL, |
148 | }; | |
149 | ||
f176a5d8 MN |
150 | |
151 | ||
152 | ||
153 | /****************************** Configurations ******************************/ | |
154 | ||
279cc49a MN |
155 | static struct fsg_module_parameters fsg_mod_data = { .stall = 1 }; |
156 | FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data); | |
157 | ||
158 | static struct fsg_common fsg_common; | |
159 | ||
160 | static u8 hostaddr[ETH_ALEN]; | |
f176a5d8 | 161 | |
f176a5d8 | 162 | |
279cc49a | 163 | /********** RNDIS **********/ |
f176a5d8 | 164 | |
396cda90 | 165 | #ifdef USB_ETH_RNDIS |
f176a5d8 | 166 | |
c9bfff9c | 167 | static __init int rndis_do_config(struct usb_configuration *c) |
f176a5d8 MN |
168 | { |
169 | int ret; | |
170 | ||
171 | if (gadget_is_otg(c->cdev->gadget)) { | |
172 | c->descriptors = otg_desc; | |
173 | c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
174 | } | |
175 | ||
176 | ret = rndis_bind_config(c, hostaddr); | |
177 | if (ret < 0) | |
178 | return ret; | |
179 | ||
180 | ret = acm_bind_config(c, 0); | |
181 | if (ret < 0) | |
182 | return ret; | |
183 | ||
279cc49a | 184 | ret = fsg_bind_config(c->cdev, c, &fsg_common); |
f176a5d8 MN |
185 | if (ret < 0) |
186 | return ret; | |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
279cc49a MN |
191 | static int rndis_config_register(struct usb_composite_dev *cdev) |
192 | { | |
193 | static struct usb_configuration config = { | |
279cc49a MN |
194 | .bConfigurationValue = MULTI_RNDIS_CONFIG_NUM, |
195 | .bmAttributes = USB_CONFIG_ATT_SELFPOWER, | |
196 | }; | |
197 | ||
198 | config.label = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].s; | |
199 | config.iConfiguration = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].id; | |
200 | ||
c9bfff9c | 201 | return usb_add_config(cdev, &config, rndis_do_config); |
279cc49a MN |
202 | } |
203 | ||
204 | #else | |
205 | ||
206 | static int rndis_config_register(struct usb_composite_dev *cdev) | |
207 | { | |
208 | return 0; | |
209 | } | |
f176a5d8 MN |
210 | |
211 | #endif | |
212 | ||
279cc49a MN |
213 | |
214 | /********** CDC ECM **********/ | |
215 | ||
f176a5d8 MN |
216 | #ifdef CONFIG_USB_G_MULTI_CDC |
217 | ||
c9bfff9c | 218 | static __init int cdc_do_config(struct usb_configuration *c) |
f176a5d8 MN |
219 | { |
220 | int ret; | |
221 | ||
222 | if (gadget_is_otg(c->cdev->gadget)) { | |
223 | c->descriptors = otg_desc; | |
224 | c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
225 | } | |
226 | ||
227 | ret = ecm_bind_config(c, hostaddr); | |
228 | if (ret < 0) | |
229 | return ret; | |
230 | ||
231 | ret = acm_bind_config(c, 0); | |
232 | if (ret < 0) | |
233 | return ret; | |
234 | ||
279cc49a | 235 | ret = fsg_bind_config(c->cdev, c, &fsg_common); |
f176a5d8 MN |
236 | if (ret < 0) |
237 | return ret; | |
f176a5d8 MN |
238 | |
239 | return 0; | |
240 | } | |
241 | ||
279cc49a MN |
242 | static int cdc_config_register(struct usb_composite_dev *cdev) |
243 | { | |
244 | static struct usb_configuration config = { | |
279cc49a MN |
245 | .bConfigurationValue = MULTI_CDC_CONFIG_NUM, |
246 | .bmAttributes = USB_CONFIG_ATT_SELFPOWER, | |
247 | }; | |
248 | ||
249 | config.label = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].s; | |
250 | config.iConfiguration = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].id; | |
251 | ||
c9bfff9c | 252 | return usb_add_config(cdev, &config, cdc_do_config); |
279cc49a MN |
253 | } |
254 | ||
255 | #else | |
256 | ||
257 | static int cdc_config_register(struct usb_composite_dev *cdev) | |
258 | { | |
259 | return 0; | |
260 | } | |
f176a5d8 MN |
261 | |
262 | #endif | |
263 | ||
264 | ||
265 | ||
266 | /****************************** Gadget Bind ******************************/ | |
267 | ||
268 | ||
279cc49a | 269 | static int __ref multi_bind(struct usb_composite_dev *cdev) |
f176a5d8 MN |
270 | { |
271 | struct usb_gadget *gadget = cdev->gadget; | |
272 | int status, gcnum; | |
273 | ||
274 | if (!can_support_ecm(cdev->gadget)) { | |
275 | dev_err(&gadget->dev, "controller '%s' not usable\n", | |
276 | gadget->name); | |
277 | return -EINVAL; | |
278 | } | |
279 | ||
280 | /* set up network link layer */ | |
281 | status = gether_setup(cdev->gadget, hostaddr); | |
282 | if (status < 0) | |
283 | return status; | |
284 | ||
285 | /* set up serial link layer */ | |
286 | status = gserial_setup(cdev->gadget, 1); | |
287 | if (status < 0) | |
288 | goto fail0; | |
289 | ||
290 | /* set up mass storage function */ | |
279cc49a MN |
291 | { |
292 | void *retp; | |
293 | retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data); | |
294 | if (IS_ERR(retp)) { | |
295 | status = PTR_ERR(retp); | |
296 | goto fail1; | |
297 | } | |
f176a5d8 MN |
298 | } |
299 | ||
279cc49a | 300 | /* set bcdDevice */ |
f176a5d8 | 301 | gcnum = usb_gadget_controller_number(gadget); |
279cc49a | 302 | if (gcnum >= 0) { |
f176a5d8 | 303 | device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); |
279cc49a MN |
304 | } else { |
305 | WARNING(cdev, "controller '%s' not recognized\n", gadget->name); | |
f176a5d8 MN |
306 | device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099); |
307 | } | |
308 | ||
a99d8a45 | 309 | /* allocate string IDs */ |
279cc49a MN |
310 | status = usb_string_ids_tab(cdev, strings_dev); |
311 | if (unlikely(status < 0)) | |
f176a5d8 | 312 | goto fail2; |
f176a5d8 | 313 | |
279cc49a MN |
314 | /* register configurations */ |
315 | status = rndis_config_register(cdev); | |
316 | if (unlikely(status < 0)) | |
f176a5d8 | 317 | goto fail2; |
f176a5d8 | 318 | |
279cc49a MN |
319 | status = cdc_config_register(cdev); |
320 | if (unlikely(status < 0)) | |
f176a5d8 | 321 | goto fail2; |
f176a5d8 | 322 | |
279cc49a MN |
323 | /* we're done */ |
324 | dev_info(&gadget->dev, DRIVER_DESC "\n"); | |
325 | fsg_common_put(&fsg_common); | |
f176a5d8 MN |
326 | return 0; |
327 | ||
279cc49a MN |
328 | |
329 | /* error recovery */ | |
f176a5d8 | 330 | fail2: |
279cc49a | 331 | fsg_common_put(&fsg_common); |
f176a5d8 MN |
332 | fail1: |
333 | gserial_cleanup(); | |
334 | fail0: | |
335 | gether_cleanup(); | |
336 | return status; | |
337 | } | |
338 | ||
339 | static int __exit multi_unbind(struct usb_composite_dev *cdev) | |
340 | { | |
341 | gserial_cleanup(); | |
342 | gether_cleanup(); | |
343 | return 0; | |
344 | } | |
345 | ||
346 | ||
347 | /****************************** Some noise ******************************/ | |
348 | ||
349 | ||
350 | static struct usb_composite_driver multi_driver = { | |
351 | .name = "g_multi", | |
352 | .dev = &device_desc, | |
353 | .strings = dev_strings, | |
35a0e0bf | 354 | .max_speed = USB_SPEED_HIGH, |
f176a5d8 | 355 | .unbind = __exit_p(multi_unbind), |
a99d8a45 MN |
356 | .iProduct = DRIVER_DESC, |
357 | .needs_serial = 1, | |
f176a5d8 MN |
358 | }; |
359 | ||
f176a5d8 | 360 | |
279cc49a | 361 | static int __init multi_init(void) |
f176a5d8 | 362 | { |
07a18bd7 | 363 | return usb_composite_probe(&multi_driver, multi_bind); |
f176a5d8 | 364 | } |
279cc49a | 365 | module_init(multi_init); |
f176a5d8 | 366 | |
279cc49a | 367 | static void __exit multi_exit(void) |
f176a5d8 MN |
368 | { |
369 | usb_composite_unregister(&multi_driver); | |
370 | } | |
279cc49a | 371 | module_exit(multi_exit); |