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> | |
27 | ||
28 | ||
396cda90 MN |
29 | #if defined USB_ETH_RNDIS |
30 | # undef USB_ETH_RNDIS | |
31 | #endif | |
32 | #ifdef CONFIG_USB_ETH_RNDIS | |
33 | # define USB_ETH_RNDIS y | |
f176a5d8 MN |
34 | #endif |
35 | ||
36 | ||
37 | #define DRIVER_DESC "Multifunction Composite Gadget" | |
38 | #define DRIVER_VERSION "2009/07/21" | |
39 | ||
40 | /*-------------------------------------------------------------------------*/ | |
41 | ||
42 | #define MULTI_VENDOR_NUM 0x0525 /* XXX NetChip */ | |
43 | #define MULTI_PRODUCT_NUM 0xa4ab /* XXX */ | |
44 | ||
45 | /*-------------------------------------------------------------------------*/ | |
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 | ||
60 | #include "u_serial.c" | |
61 | #include "f_acm.c" | |
62 | ||
63 | #include "f_ecm.c" | |
64 | #include "f_subset.c" | |
396cda90 | 65 | #ifdef USB_ETH_RNDIS |
f176a5d8 MN |
66 | # include "f_rndis.c" |
67 | # include "rndis.c" | |
68 | #endif | |
69 | #include "u_ether.c" | |
70 | ||
71 | #undef DBG /* u_ether.c has broken idea about macros */ | |
72 | #undef VDBG /* so clean up after it */ | |
73 | #undef ERROR | |
74 | #undef INFO | |
75 | #include "f_mass_storage.c" | |
76 | ||
77 | /*-------------------------------------------------------------------------*/ | |
78 | ||
79 | static struct usb_device_descriptor device_desc = { | |
80 | .bLength = sizeof device_desc, | |
81 | .bDescriptorType = USB_DT_DEVICE, | |
82 | ||
83 | .bcdUSB = cpu_to_le16(0x0200), | |
84 | ||
85 | /* .bDeviceClass = USB_CLASS_COMM, */ | |
86 | /* .bDeviceSubClass = 0, */ | |
87 | /* .bDeviceProtocol = 0, */ | |
88 | .bDeviceClass = 0xEF, | |
89 | .bDeviceSubClass = 2, | |
90 | .bDeviceProtocol = 1, | |
91 | /* .bMaxPacketSize0 = f(hardware) */ | |
92 | ||
93 | /* Vendor and product id can be overridden by module parameters. */ | |
94 | .idVendor = cpu_to_le16(MULTI_VENDOR_NUM), | |
95 | .idProduct = cpu_to_le16(MULTI_PRODUCT_NUM), | |
96 | /* .bcdDevice = f(hardware) */ | |
97 | /* .iManufacturer = DYNAMIC */ | |
98 | /* .iProduct = DYNAMIC */ | |
99 | /* NO SERIAL NUMBER */ | |
100 | .bNumConfigurations = 1, | |
101 | }; | |
102 | ||
103 | static struct usb_otg_descriptor otg_descriptor = { | |
104 | .bLength = sizeof otg_descriptor, | |
105 | .bDescriptorType = USB_DT_OTG, | |
106 | ||
107 | /* REVISIT SRP-only hardware is possible, although | |
108 | * it would not be called "OTG" ... | |
109 | */ | |
110 | .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, | |
111 | }; | |
112 | ||
113 | static const struct usb_descriptor_header *otg_desc[] = { | |
114 | (struct usb_descriptor_header *) &otg_descriptor, | |
115 | NULL, | |
116 | }; | |
117 | ||
118 | ||
119 | /* string IDs are assigned dynamically */ | |
120 | ||
121 | #define STRING_MANUFACTURER_IDX 0 | |
122 | #define STRING_PRODUCT_IDX 1 | |
123 | ||
124 | static char manufacturer[50]; | |
125 | ||
126 | static struct usb_string strings_dev[] = { | |
127 | [STRING_MANUFACTURER_IDX].s = manufacturer, | |
128 | [STRING_PRODUCT_IDX].s = DRIVER_DESC, | |
129 | { } /* end of list */ | |
130 | }; | |
131 | ||
132 | static struct usb_gadget_strings stringtab_dev = { | |
133 | .language = 0x0409, /* en-us */ | |
134 | .strings = strings_dev, | |
135 | }; | |
136 | ||
137 | static struct usb_gadget_strings *dev_strings[] = { | |
138 | &stringtab_dev, | |
139 | NULL, | |
140 | }; | |
141 | ||
142 | static u8 hostaddr[ETH_ALEN]; | |
143 | ||
144 | ||
145 | ||
146 | /****************************** Configurations ******************************/ | |
147 | ||
148 | static struct fsg_module_parameters mod_data = { | |
149 | .stall = 1 | |
150 | }; | |
151 | FSG_MODULE_PARAMETERS(/* no prefix */, mod_data); | |
152 | ||
153 | static struct fsg_common *fsg_common; | |
154 | ||
155 | ||
396cda90 | 156 | #ifdef USB_ETH_RNDIS |
f176a5d8 MN |
157 | |
158 | static int __init rndis_do_config(struct usb_configuration *c) | |
159 | { | |
160 | int ret; | |
161 | ||
162 | if (gadget_is_otg(c->cdev->gadget)) { | |
163 | c->descriptors = otg_desc; | |
164 | c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
165 | } | |
166 | ||
167 | ret = rndis_bind_config(c, hostaddr); | |
168 | if (ret < 0) | |
169 | return ret; | |
170 | ||
171 | ret = acm_bind_config(c, 0); | |
172 | if (ret < 0) | |
173 | return ret; | |
174 | ||
175 | ret = fsg_add(c->cdev, c, fsg_common); | |
176 | if (ret < 0) | |
177 | return ret; | |
178 | ||
179 | return 0; | |
180 | } | |
181 | ||
182 | static struct usb_configuration rndis_config_driver = { | |
183 | .label = "Multifunction Composite (RNDIS + MS + ACM)", | |
184 | .bind = rndis_do_config, | |
185 | .bConfigurationValue = 2, | |
186 | /* .iConfiguration = DYNAMIC */ | |
187 | .bmAttributes = USB_CONFIG_ATT_SELFPOWER, | |
188 | }; | |
189 | ||
190 | #endif | |
191 | ||
192 | #ifdef CONFIG_USB_G_MULTI_CDC | |
193 | ||
194 | static int __init cdc_do_config(struct usb_configuration *c) | |
195 | { | |
196 | int ret; | |
197 | ||
198 | if (gadget_is_otg(c->cdev->gadget)) { | |
199 | c->descriptors = otg_desc; | |
200 | c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
201 | } | |
202 | ||
203 | ret = ecm_bind_config(c, hostaddr); | |
204 | if (ret < 0) | |
205 | return ret; | |
206 | ||
207 | ret = acm_bind_config(c, 0); | |
208 | if (ret < 0) | |
209 | return ret; | |
210 | ||
211 | ret = fsg_add(c->cdev, c, fsg_common); | |
212 | if (ret < 0) | |
213 | return ret; | |
214 | if (ret < 0) | |
215 | return ret; | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | static struct usb_configuration cdc_config_driver = { | |
221 | .label = "Multifunction Composite (CDC + MS + ACM)", | |
222 | .bind = cdc_do_config, | |
223 | .bConfigurationValue = 1, | |
224 | /* .iConfiguration = DYNAMIC */ | |
225 | .bmAttributes = USB_CONFIG_ATT_SELFPOWER, | |
226 | }; | |
227 | ||
228 | #endif | |
229 | ||
230 | ||
231 | ||
232 | /****************************** Gadget Bind ******************************/ | |
233 | ||
234 | ||
235 | static int __init multi_bind(struct usb_composite_dev *cdev) | |
236 | { | |
237 | struct usb_gadget *gadget = cdev->gadget; | |
238 | int status, gcnum; | |
239 | ||
240 | if (!can_support_ecm(cdev->gadget)) { | |
241 | dev_err(&gadget->dev, "controller '%s' not usable\n", | |
242 | gadget->name); | |
243 | return -EINVAL; | |
244 | } | |
245 | ||
246 | /* set up network link layer */ | |
247 | status = gether_setup(cdev->gadget, hostaddr); | |
248 | if (status < 0) | |
249 | return status; | |
250 | ||
251 | /* set up serial link layer */ | |
252 | status = gserial_setup(cdev->gadget, 1); | |
253 | if (status < 0) | |
254 | goto fail0; | |
255 | ||
256 | /* set up mass storage function */ | |
257 | fsg_common = fsg_common_from_params(0, cdev, &mod_data); | |
258 | if (IS_ERR(fsg_common)) { | |
259 | status = PTR_ERR(fsg_common); | |
260 | goto fail1; | |
261 | } | |
262 | ||
263 | ||
264 | gcnum = usb_gadget_controller_number(gadget); | |
265 | if (gcnum >= 0) | |
266 | device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); | |
267 | else { | |
268 | /* We assume that can_support_ecm() tells the truth; | |
269 | * but if the controller isn't recognized at all then | |
270 | * that assumption is a bit more likely to be wrong. | |
271 | */ | |
272 | WARNING(cdev, "controller '%s' not recognized\n", | |
273 | gadget->name); | |
274 | device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099); | |
275 | } | |
276 | ||
277 | ||
278 | /* Allocate string descriptor numbers ... note that string | |
279 | * contents can be overridden by the composite_dev glue. | |
280 | */ | |
281 | ||
282 | /* device descriptor strings: manufacturer, product */ | |
283 | snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", | |
284 | init_utsname()->sysname, init_utsname()->release, | |
285 | gadget->name); | |
286 | status = usb_string_id(cdev); | |
287 | if (status < 0) | |
288 | goto fail2; | |
289 | strings_dev[STRING_MANUFACTURER_IDX].id = status; | |
290 | device_desc.iManufacturer = status; | |
291 | ||
292 | status = usb_string_id(cdev); | |
293 | if (status < 0) | |
294 | goto fail2; | |
295 | strings_dev[STRING_PRODUCT_IDX].id = status; | |
296 | device_desc.iProduct = status; | |
297 | ||
396cda90 | 298 | #ifdef USB_ETH_RNDIS |
f176a5d8 MN |
299 | /* register our first configuration */ |
300 | status = usb_add_config(cdev, &rndis_config_driver); | |
301 | if (status < 0) | |
302 | goto fail2; | |
303 | #endif | |
304 | ||
305 | #ifdef CONFIG_USB_G_MULTI_CDC | |
306 | /* register our second configuration */ | |
307 | status = usb_add_config(cdev, &cdc_config_driver); | |
308 | if (status < 0) | |
309 | goto fail2; | |
310 | #endif | |
311 | ||
312 | dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n"); | |
313 | fsg_common_put(fsg_common); | |
314 | return 0; | |
315 | ||
316 | fail2: | |
317 | fsg_common_put(fsg_common); | |
318 | fail1: | |
319 | gserial_cleanup(); | |
320 | fail0: | |
321 | gether_cleanup(); | |
322 | return status; | |
323 | } | |
324 | ||
325 | static int __exit multi_unbind(struct usb_composite_dev *cdev) | |
326 | { | |
327 | gserial_cleanup(); | |
328 | gether_cleanup(); | |
329 | return 0; | |
330 | } | |
331 | ||
332 | ||
333 | /****************************** Some noise ******************************/ | |
334 | ||
335 | ||
336 | static struct usb_composite_driver multi_driver = { | |
337 | .name = "g_multi", | |
338 | .dev = &device_desc, | |
339 | .strings = dev_strings, | |
340 | .bind = multi_bind, | |
341 | .unbind = __exit_p(multi_unbind), | |
342 | }; | |
343 | ||
344 | MODULE_DESCRIPTION(DRIVER_DESC); | |
345 | MODULE_AUTHOR("Michal Nazarewicz"); | |
346 | MODULE_LICENSE("GPL"); | |
347 | ||
348 | static int __init g_multi_init(void) | |
349 | { | |
350 | return usb_composite_register(&multi_driver); | |
351 | } | |
352 | module_init(g_multi_init); | |
353 | ||
354 | static void __exit g_multi_cleanup(void) | |
355 | { | |
356 | usb_composite_unregister(&multi_driver); | |
357 | } | |
358 | module_exit(g_multi_cleanup); |