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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * cdc-acm.c | |
3 | * | |
4 | * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de> | |
a2531293 | 5 | * Copyright (c) 1999 Pavel Machek <pavel@ucw.cz> |
1da177e4 LT |
6 | * Copyright (c) 1999 Johannes Erdfelt <johannes@erdfelt.com> |
7 | * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz> | |
8 | * Copyright (c) 2004 Oliver Neukum <oliver@neukum.name> | |
61a87adf | 9 | * Copyright (c) 2005 David Kubicek <dave@awk.cz> |
088c64f8 | 10 | * Copyright (c) 2011 Johan Hovold <jhovold@gmail.com> |
1da177e4 LT |
11 | * |
12 | * USB Abstract Control Model driver for USB modems and ISDN adapters | |
13 | * | |
14 | * Sponsored by SuSE | |
15 | * | |
1da177e4 LT |
16 | * This program is free software; you can redistribute it and/or modify |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
20 | * | |
21 | * This program is distributed in the hope that it will be useful, | |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | * GNU General Public License for more details. | |
25 | * | |
26 | * You should have received a copy of the GNU General Public License | |
27 | * along with this program; if not, write to the Free Software | |
28 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
29 | */ | |
30 | ||
31 | #undef DEBUG | |
e5fbab51 | 32 | #undef VERBOSE_DEBUG |
1da177e4 LT |
33 | |
34 | #include <linux/kernel.h> | |
35 | #include <linux/errno.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/slab.h> | |
38 | #include <linux/tty.h> | |
7af25b4b | 39 | #include <linux/serial.h> |
1da177e4 LT |
40 | #include <linux/tty_driver.h> |
41 | #include <linux/tty_flip.h> | |
42 | #include <linux/module.h> | |
4186ecf8 | 43 | #include <linux/mutex.h> |
10077d4a | 44 | #include <linux/uaccess.h> |
1da177e4 | 45 | #include <linux/usb.h> |
a8c28f23 | 46 | #include <linux/usb/cdc.h> |
1da177e4 LT |
47 | #include <asm/byteorder.h> |
48 | #include <asm/unaligned.h> | |
61a87adf | 49 | #include <linux/list.h> |
1da177e4 LT |
50 | |
51 | #include "cdc-acm.h" | |
52 | ||
e5fbab51 | 53 | |
088c64f8 | 54 | #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold" |
1da177e4 LT |
55 | #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters" |
56 | ||
57 | static struct usb_driver acm_driver; | |
58 | static struct tty_driver *acm_tty_driver; | |
59 | static struct acm *acm_table[ACM_TTY_MINORS]; | |
60 | ||
4186ecf8 | 61 | static DEFINE_MUTEX(open_mutex); |
1da177e4 | 62 | |
10077d4a | 63 | #define ACM_READY(acm) (acm && acm->dev && acm->port.count) |
1da177e4 | 64 | |
739e0285 AC |
65 | static const struct tty_port_operations acm_port_ops = { |
66 | }; | |
67 | ||
1da177e4 LT |
68 | /* |
69 | * Functions for ACM control messages. | |
70 | */ | |
71 | ||
6e47e069 AC |
72 | static int acm_ctrl_msg(struct acm *acm, int request, int value, |
73 | void *buf, int len) | |
1da177e4 LT |
74 | { |
75 | int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), | |
76 | request, USB_RT_ACM, value, | |
77 | acm->control->altsetting[0].desc.bInterfaceNumber, | |
78 | buf, len, 5000); | |
a5cc7ef9 JH |
79 | dev_dbg(&acm->control->dev, |
80 | "%s - rq 0x%02x, val %#x, len %#x, result %d\n", | |
81 | __func__, request, value, len, retval); | |
1da177e4 LT |
82 | return retval < 0 ? retval : 0; |
83 | } | |
84 | ||
85 | /* devices aren't required to support these requests. | |
86 | * the cdc acm descriptor tells whether they do... | |
87 | */ | |
88 | #define acm_set_control(acm, control) \ | |
89 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0) | |
90 | #define acm_set_line(acm, line) \ | |
91 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line)) | |
92 | #define acm_send_break(acm, ms) \ | |
93 | acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0) | |
94 | ||
884b600f ON |
95 | /* |
96 | * Write buffer management. | |
97 | * All of these assume proper locks taken by the caller. | |
98 | */ | |
99 | ||
100 | static int acm_wb_alloc(struct acm *acm) | |
101 | { | |
102 | int i, wbn; | |
103 | struct acm_wb *wb; | |
104 | ||
e4cf3aa8 | 105 | wbn = 0; |
884b600f ON |
106 | i = 0; |
107 | for (;;) { | |
108 | wb = &acm->wb[wbn]; | |
109 | if (!wb->use) { | |
110 | wb->use = 1; | |
111 | return wbn; | |
112 | } | |
86478944 ON |
113 | wbn = (wbn + 1) % ACM_NW; |
114 | if (++i >= ACM_NW) | |
884b600f ON |
115 | return -1; |
116 | } | |
117 | } | |
118 | ||
884b600f ON |
119 | static int acm_wb_is_avail(struct acm *acm) |
120 | { | |
121 | int i, n; | |
e5fbab51 | 122 | unsigned long flags; |
884b600f | 123 | |
86478944 | 124 | n = ACM_NW; |
e5fbab51 | 125 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 | 126 | for (i = 0; i < ACM_NW; i++) |
86478944 | 127 | n -= acm->wb[i].use; |
e5fbab51 | 128 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
129 | return n; |
130 | } | |
131 | ||
884b600f | 132 | /* |
ad0b65ef | 133 | * Finish write. Caller must hold acm->write_lock |
884b600f | 134 | */ |
e4cf3aa8 | 135 | static void acm_write_done(struct acm *acm, struct acm_wb *wb) |
884b600f | 136 | { |
e4cf3aa8 | 137 | wb->use = 0; |
11ea859d | 138 | acm->transmitting--; |
97d35f95 | 139 | usb_autopm_put_interface_async(acm->control); |
884b600f ON |
140 | } |
141 | ||
142 | /* | |
143 | * Poke write. | |
11ea859d ON |
144 | * |
145 | * the caller is responsible for locking | |
884b600f | 146 | */ |
11ea859d ON |
147 | |
148 | static int acm_start_wb(struct acm *acm, struct acm_wb *wb) | |
149 | { | |
150 | int rc; | |
151 | ||
152 | acm->transmitting++; | |
153 | ||
154 | wb->urb->transfer_buffer = wb->buf; | |
155 | wb->urb->transfer_dma = wb->dmah; | |
156 | wb->urb->transfer_buffer_length = wb->len; | |
157 | wb->urb->dev = acm->dev; | |
158 | ||
6e47e069 AC |
159 | rc = usb_submit_urb(wb->urb, GFP_ATOMIC); |
160 | if (rc < 0) { | |
a5cc7ef9 JH |
161 | dev_err(&acm->data->dev, |
162 | "%s - usb_submit_urb(write bulk) failed: %d\n", | |
163 | __func__, rc); | |
11ea859d ON |
164 | acm_write_done(acm, wb); |
165 | } | |
166 | return rc; | |
167 | } | |
168 | ||
e4cf3aa8 | 169 | static int acm_write_start(struct acm *acm, int wbn) |
884b600f ON |
170 | { |
171 | unsigned long flags; | |
934da463 | 172 | struct acm_wb *wb = &acm->wb[wbn]; |
884b600f ON |
173 | int rc; |
174 | ||
175 | spin_lock_irqsave(&acm->write_lock, flags); | |
176 | if (!acm->dev) { | |
934da463 | 177 | wb->use = 0; |
884b600f ON |
178 | spin_unlock_irqrestore(&acm->write_lock, flags); |
179 | return -ENODEV; | |
180 | } | |
181 | ||
5e9e75f8 | 182 | dev_vdbg(&acm->data->dev, "%s - susp_count %d\n", __func__, |
a5cc7ef9 | 183 | acm->susp_count); |
97d35f95 | 184 | usb_autopm_get_interface_async(acm->control); |
11ea859d | 185 | if (acm->susp_count) { |
97d35f95 ON |
186 | if (!acm->delayed_wb) |
187 | acm->delayed_wb = wb; | |
188 | else | |
189 | usb_autopm_put_interface_async(acm->control); | |
11ea859d ON |
190 | spin_unlock_irqrestore(&acm->write_lock, flags); |
191 | return 0; /* A white lie */ | |
192 | } | |
193 | usb_mark_last_busy(acm->dev); | |
194 | ||
11ea859d | 195 | rc = acm_start_wb(acm, wb); |
884b600f ON |
196 | spin_unlock_irqrestore(&acm->write_lock, flags); |
197 | ||
884b600f | 198 | return rc; |
11ea859d | 199 | |
884b600f | 200 | } |
c4cabd28 ON |
201 | /* |
202 | * attributes exported through sysfs | |
203 | */ | |
204 | static ssize_t show_caps | |
205 | (struct device *dev, struct device_attribute *attr, char *buf) | |
206 | { | |
207 | struct usb_interface *intf = to_usb_interface(dev); | |
208 | struct acm *acm = usb_get_intfdata(intf); | |
209 | ||
210 | return sprintf(buf, "%d", acm->ctrl_caps); | |
211 | } | |
212 | static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL); | |
213 | ||
214 | static ssize_t show_country_codes | |
215 | (struct device *dev, struct device_attribute *attr, char *buf) | |
216 | { | |
217 | struct usb_interface *intf = to_usb_interface(dev); | |
218 | struct acm *acm = usb_get_intfdata(intf); | |
219 | ||
220 | memcpy(buf, acm->country_codes, acm->country_code_size); | |
221 | return acm->country_code_size; | |
222 | } | |
223 | ||
224 | static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL); | |
225 | ||
226 | static ssize_t show_country_rel_date | |
227 | (struct device *dev, struct device_attribute *attr, char *buf) | |
228 | { | |
229 | struct usb_interface *intf = to_usb_interface(dev); | |
230 | struct acm *acm = usb_get_intfdata(intf); | |
231 | ||
232 | return sprintf(buf, "%d", acm->country_rel_date); | |
233 | } | |
884b600f | 234 | |
c4cabd28 | 235 | static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL); |
1da177e4 LT |
236 | /* |
237 | * Interrupt handlers for various ACM device responses | |
238 | */ | |
239 | ||
240 | /* control interface reports status changes with "interrupt" transfers */ | |
7d12e780 | 241 | static void acm_ctrl_irq(struct urb *urb) |
1da177e4 LT |
242 | { |
243 | struct acm *acm = urb->context; | |
244 | struct usb_cdc_notification *dr = urb->transfer_buffer; | |
10077d4a | 245 | struct tty_struct *tty; |
1da177e4 LT |
246 | unsigned char *data; |
247 | int newctrl; | |
185d4058 GKH |
248 | int retval; |
249 | int status = urb->status; | |
1da177e4 | 250 | |
185d4058 | 251 | switch (status) { |
1da177e4 LT |
252 | case 0: |
253 | /* success */ | |
254 | break; | |
255 | case -ECONNRESET: | |
256 | case -ENOENT: | |
257 | case -ESHUTDOWN: | |
258 | /* this urb is terminated, clean up */ | |
a5cc7ef9 JH |
259 | dev_dbg(&acm->control->dev, |
260 | "%s - urb shutting down with status: %d\n", | |
261 | __func__, status); | |
1da177e4 LT |
262 | return; |
263 | default: | |
a5cc7ef9 JH |
264 | dev_dbg(&acm->control->dev, |
265 | "%s - nonzero urb status received: %d\n", | |
266 | __func__, status); | |
1da177e4 LT |
267 | goto exit; |
268 | } | |
269 | ||
270 | if (!ACM_READY(acm)) | |
271 | goto exit; | |
272 | ||
7e7797e7 JH |
273 | usb_mark_last_busy(acm->dev); |
274 | ||
1da177e4 LT |
275 | data = (unsigned char *)(dr + 1); |
276 | switch (dr->bNotificationType) { | |
6e47e069 | 277 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: |
a5cc7ef9 JH |
278 | dev_dbg(&acm->control->dev, "%s - network connection: %d\n", |
279 | __func__, dr->wValue); | |
6e47e069 | 280 | break; |
1da177e4 | 281 | |
6e47e069 AC |
282 | case USB_CDC_NOTIFY_SERIAL_STATE: |
283 | tty = tty_port_tty_get(&acm->port); | |
284 | newctrl = get_unaligned_le16(data); | |
1da177e4 | 285 | |
6e47e069 AC |
286 | if (tty) { |
287 | if (!acm->clocal && | |
288 | (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { | |
a5cc7ef9 JH |
289 | dev_dbg(&acm->control->dev, |
290 | "%s - calling hangup\n", __func__); | |
6e47e069 | 291 | tty_hangup(tty); |
1da177e4 | 292 | } |
6e47e069 AC |
293 | tty_kref_put(tty); |
294 | } | |
1da177e4 | 295 | |
6e47e069 | 296 | acm->ctrlin = newctrl; |
1da177e4 | 297 | |
a5cc7ef9 JH |
298 | dev_dbg(&acm->control->dev, |
299 | "%s - input control lines: dcd%c dsr%c break%c " | |
300 | "ring%c framing%c parity%c overrun%c\n", | |
301 | __func__, | |
6e47e069 AC |
302 | acm->ctrlin & ACM_CTRL_DCD ? '+' : '-', |
303 | acm->ctrlin & ACM_CTRL_DSR ? '+' : '-', | |
304 | acm->ctrlin & ACM_CTRL_BRK ? '+' : '-', | |
305 | acm->ctrlin & ACM_CTRL_RI ? '+' : '-', | |
306 | acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-', | |
307 | acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-', | |
308 | acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-'); | |
1da177e4 LT |
309 | break; |
310 | ||
6e47e069 | 311 | default: |
a5cc7ef9 JH |
312 | dev_dbg(&acm->control->dev, |
313 | "%s - unknown notification %d received: index %d " | |
314 | "len %d data0 %d data1 %d\n", | |
315 | __func__, | |
6e47e069 AC |
316 | dr->bNotificationType, dr->wIndex, |
317 | dr->wLength, data[0], data[1]); | |
318 | break; | |
1da177e4 LT |
319 | } |
320 | exit: | |
6e47e069 | 321 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
185d4058 | 322 | if (retval) |
1d9846e5 JH |
323 | dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n", |
324 | __func__, retval); | |
1da177e4 LT |
325 | } |
326 | ||
088c64f8 | 327 | static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) |
1da177e4 | 328 | { |
088c64f8 | 329 | int res; |
185d4058 | 330 | |
088c64f8 JH |
331 | if (!test_and_clear_bit(index, &acm->read_urbs_free)) |
332 | return 0; | |
1da177e4 | 333 | |
088c64f8 JH |
334 | dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index); |
335 | ||
336 | res = usb_submit_urb(acm->read_urbs[index], mem_flags); | |
337 | if (res) { | |
338 | if (res != -EPERM) { | |
339 | dev_err(&acm->data->dev, | |
340 | "%s - usb_submit_urb failed: %d\n", | |
341 | __func__, res); | |
342 | } | |
343 | set_bit(index, &acm->read_urbs_free); | |
344 | return res; | |
11ea859d | 345 | } |
1da177e4 | 346 | |
088c64f8 JH |
347 | return 0; |
348 | } | |
1da177e4 | 349 | |
088c64f8 JH |
350 | static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags) |
351 | { | |
352 | int res; | |
353 | int i; | |
61a87adf | 354 | |
088c64f8 JH |
355 | for (i = 0; i < acm->rx_buflimit; ++i) { |
356 | res = acm_submit_read_urb(acm, i, mem_flags); | |
357 | if (res) | |
358 | return res; | |
86478944 | 359 | } |
088c64f8 JH |
360 | |
361 | return 0; | |
1da177e4 LT |
362 | } |
363 | ||
088c64f8 | 364 | static void acm_process_read_urb(struct acm *acm, struct urb *urb) |
1da177e4 | 365 | { |
10077d4a | 366 | struct tty_struct *tty; |
1da177e4 | 367 | |
088c64f8 | 368 | if (!urb->actual_length) |
ca79b7b4 | 369 | return; |
61a87adf | 370 | |
10077d4a | 371 | tty = tty_port_tty_get(&acm->port); |
088c64f8 JH |
372 | if (!tty) |
373 | return; | |
10077d4a | 374 | |
088c64f8 JH |
375 | tty_insert_flip_string(tty, urb->transfer_buffer, urb->actual_length); |
376 | tty_flip_buffer_push(tty); | |
61a87adf | 377 | |
10077d4a | 378 | tty_kref_put(tty); |
088c64f8 | 379 | } |
10077d4a | 380 | |
088c64f8 JH |
381 | static void acm_read_bulk_callback(struct urb *urb) |
382 | { | |
383 | struct acm_rb *rb = urb->context; | |
384 | struct acm *acm = rb->instance; | |
385 | unsigned long flags; | |
61a87adf | 386 | |
088c64f8 JH |
387 | dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__, |
388 | rb->index, urb->actual_length); | |
389 | set_bit(rb->index, &acm->read_urbs_free); | |
61a87adf | 390 | |
088c64f8 JH |
391 | if (!acm->dev) { |
392 | dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__); | |
393 | return; | |
394 | } | |
395 | usb_mark_last_busy(acm->dev); | |
61a87adf | 396 | |
088c64f8 JH |
397 | if (urb->status) { |
398 | dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n", | |
399 | __func__, urb->status); | |
400 | return; | |
61a87adf | 401 | } |
088c64f8 JH |
402 | acm_process_read_urb(acm, urb); |
403 | ||
404 | /* throttle device if requested by tty */ | |
11ea859d | 405 | spin_lock_irqsave(&acm->read_lock, flags); |
088c64f8 JH |
406 | acm->throttled = acm->throttle_req; |
407 | if (!acm->throttled && !acm->susp_count) { | |
408 | spin_unlock_irqrestore(&acm->read_lock, flags); | |
409 | acm_submit_read_urb(acm, rb->index, GFP_ATOMIC); | |
410 | } else { | |
411 | spin_unlock_irqrestore(&acm->read_lock, flags); | |
412 | } | |
1da177e4 LT |
413 | } |
414 | ||
415 | /* data interface wrote those outgoing bytes */ | |
7d12e780 | 416 | static void acm_write_bulk(struct urb *urb) |
1da177e4 | 417 | { |
cdc97792 | 418 | struct acm_wb *wb = urb->context; |
e5fbab51 | 419 | struct acm *acm = wb->instance; |
ad0b65ef | 420 | unsigned long flags; |
1da177e4 | 421 | |
4fa4626c JH |
422 | if (urb->status || (urb->actual_length != urb->transfer_buffer_length)) |
423 | dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n", | |
1d9846e5 | 424 | __func__, |
e5fbab51 DB |
425 | urb->actual_length, |
426 | urb->transfer_buffer_length, | |
427 | urb->status); | |
1da177e4 | 428 | |
ad0b65ef | 429 | spin_lock_irqsave(&acm->write_lock, flags); |
e4cf3aa8 | 430 | acm_write_done(acm, wb); |
ad0b65ef | 431 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
432 | if (ACM_READY(acm)) |
433 | schedule_work(&acm->work); | |
1da177e4 LT |
434 | } |
435 | ||
c4028958 | 436 | static void acm_softint(struct work_struct *work) |
1da177e4 | 437 | { |
c4028958 | 438 | struct acm *acm = container_of(work, struct acm, work); |
10077d4a | 439 | struct tty_struct *tty; |
e5fbab51 | 440 | |
1d9846e5 JH |
441 | dev_vdbg(&acm->data->dev, "%s\n", __func__); |
442 | ||
1da177e4 LT |
443 | if (!ACM_READY(acm)) |
444 | return; | |
10077d4a | 445 | tty = tty_port_tty_get(&acm->port); |
15e5bee3 JH |
446 | if (!tty) |
447 | return; | |
10077d4a AC |
448 | tty_wakeup(tty); |
449 | tty_kref_put(tty); | |
1da177e4 LT |
450 | } |
451 | ||
452 | /* | |
453 | * TTY handlers | |
454 | */ | |
455 | ||
456 | static int acm_tty_open(struct tty_struct *tty, struct file *filp) | |
457 | { | |
458 | struct acm *acm; | |
42dd2aa6 | 459 | int rv = -ENODEV; |
4186ecf8 AV |
460 | |
461 | mutex_lock(&open_mutex); | |
1da177e4 LT |
462 | |
463 | acm = acm_table[tty->index]; | |
464 | if (!acm || !acm->dev) | |
2b626dc1 | 465 | goto out; |
1da177e4 LT |
466 | else |
467 | rv = 0; | |
468 | ||
a5cc7ef9 JH |
469 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
470 | ||
28d1dfad | 471 | set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); |
10077d4a | 472 | |
1da177e4 | 473 | tty->driver_data = acm; |
10077d4a | 474 | tty_port_tty_set(&acm->port, tty); |
1da177e4 | 475 | |
94409cc1 ON |
476 | if (usb_autopm_get_interface(acm->control) < 0) |
477 | goto early_bail; | |
11ea859d ON |
478 | else |
479 | acm->control->needs_remote_wakeup = 1; | |
1365baf7 ON |
480 | |
481 | mutex_lock(&acm->mutex); | |
10077d4a | 482 | if (acm->port.count++) { |
2b626dc1 | 483 | mutex_unlock(&acm->mutex); |
1365baf7 | 484 | usb_autopm_put_interface(acm->control); |
2b626dc1 | 485 | goto out; |
10077d4a | 486 | } |
1365baf7 | 487 | |
1da177e4 LT |
488 | acm->ctrlurb->dev = acm->dev; |
489 | if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) { | |
a5cc7ef9 JH |
490 | dev_err(&acm->control->dev, |
491 | "%s - usb_submit_urb(ctrl irq) failed\n", __func__); | |
1da177e4 LT |
492 | goto bail_out; |
493 | } | |
494 | ||
ca79b7b4 ON |
495 | if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS) && |
496 | (acm->ctrl_caps & USB_CDC_CAP_LINE)) | |
94d4c891 | 497 | goto bail_out; |
10077d4a | 498 | |
11ea859d | 499 | usb_autopm_put_interface(acm->control); |
1da177e4 | 500 | |
088c64f8 JH |
501 | if (acm_submit_read_urbs(acm, GFP_KERNEL)) |
502 | goto bail_out; | |
ca79b7b4 | 503 | |
7af25b4b | 504 | set_bit(ASYNCB_INITIALIZED, &acm->port.flags); |
10077d4a | 505 | rv = tty_port_block_til_ready(&acm->port, tty, filp); |
2b626dc1 | 506 | |
1365baf7 | 507 | mutex_unlock(&acm->mutex); |
2b626dc1 | 508 | out: |
94409cc1 | 509 | mutex_unlock(&open_mutex); |
1da177e4 LT |
510 | return rv; |
511 | ||
1da177e4 | 512 | bail_out: |
10077d4a | 513 | acm->port.count--; |
1365baf7 | 514 | mutex_unlock(&acm->mutex); |
2b626dc1 | 515 | usb_autopm_put_interface(acm->control); |
94409cc1 ON |
516 | early_bail: |
517 | mutex_unlock(&open_mutex); | |
10077d4a | 518 | tty_port_tty_set(&acm->port, NULL); |
1da177e4 LT |
519 | return -EIO; |
520 | } | |
521 | ||
83ef344a | 522 | static void acm_tty_unregister(struct acm *acm) |
523 | { | |
dab54c9f | 524 | int i; |
61a87adf | 525 | |
83ef344a | 526 | tty_unregister_device(acm_tty_driver, acm->minor); |
527 | usb_put_intf(acm->control); | |
528 | acm_table[acm->minor] = NULL; | |
529 | usb_free_urb(acm->ctrlurb); | |
e4cf3aa8 DE |
530 | for (i = 0; i < ACM_NW; i++) |
531 | usb_free_urb(acm->wb[i].urb); | |
dab54c9f | 532 | for (i = 0; i < acm->rx_buflimit; i++) |
088c64f8 | 533 | usb_free_urb(acm->read_urbs[i]); |
c4cabd28 | 534 | kfree(acm->country_codes); |
83ef344a | 535 | kfree(acm); |
536 | } | |
537 | ||
4e608671 | 538 | static void acm_port_down(struct acm *acm) |
10077d4a | 539 | { |
dab54c9f JH |
540 | int i; |
541 | ||
10077d4a AC |
542 | mutex_lock(&open_mutex); |
543 | if (acm->dev) { | |
544 | usb_autopm_get_interface(acm->control); | |
545 | acm_set_control(acm, acm->ctrlout = 0); | |
10077d4a AC |
546 | usb_kill_urb(acm->ctrlurb); |
547 | for (i = 0; i < ACM_NW; i++) | |
548 | usb_kill_urb(acm->wb[i].urb); | |
dab54c9f | 549 | for (i = 0; i < acm->rx_buflimit; i++) |
088c64f8 | 550 | usb_kill_urb(acm->read_urbs[i]); |
10077d4a AC |
551 | acm->control->needs_remote_wakeup = 0; |
552 | usb_autopm_put_interface(acm->control); | |
553 | } | |
554 | mutex_unlock(&open_mutex); | |
555 | } | |
556 | ||
557 | static void acm_tty_hangup(struct tty_struct *tty) | |
558 | { | |
559 | struct acm *acm = tty->driver_data; | |
560 | tty_port_hangup(&acm->port); | |
4e608671 | 561 | acm_port_down(acm); |
10077d4a AC |
562 | } |
563 | ||
1da177e4 LT |
564 | static void acm_tty_close(struct tty_struct *tty, struct file *filp) |
565 | { | |
566 | struct acm *acm = tty->driver_data; | |
567 | ||
10077d4a AC |
568 | /* Perform the closing process and see if we need to do the hardware |
569 | shutdown */ | |
051522bb | 570 | if (!acm) |
1da177e4 | 571 | return; |
051522bb FL |
572 | if (tty_port_close_start(&acm->port, tty, filp) == 0) { |
573 | mutex_lock(&open_mutex); | |
574 | if (!acm->dev) { | |
575 | tty_port_tty_set(&acm->port, NULL); | |
576 | acm_tty_unregister(acm); | |
577 | tty->driver_data = NULL; | |
578 | } | |
579 | mutex_unlock(&open_mutex); | |
580 | return; | |
581 | } | |
4e608671 | 582 | acm_port_down(acm); |
10077d4a | 583 | tty_port_close_end(&acm->port, tty); |
10077d4a | 584 | tty_port_tty_set(&acm->port, NULL); |
1da177e4 LT |
585 | } |
586 | ||
6e47e069 AC |
587 | static int acm_tty_write(struct tty_struct *tty, |
588 | const unsigned char *buf, int count) | |
1da177e4 LT |
589 | { |
590 | struct acm *acm = tty->driver_data; | |
591 | int stat; | |
884b600f ON |
592 | unsigned long flags; |
593 | int wbn; | |
594 | struct acm_wb *wb; | |
595 | ||
1da177e4 LT |
596 | if (!ACM_READY(acm)) |
597 | return -EINVAL; | |
1da177e4 LT |
598 | if (!count) |
599 | return 0; | |
600 | ||
5e9e75f8 | 601 | dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count); |
a5cc7ef9 | 602 | |
884b600f | 603 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 AC |
604 | wbn = acm_wb_alloc(acm); |
605 | if (wbn < 0) { | |
884b600f | 606 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
607 | return 0; |
608 | } | |
609 | wb = &acm->wb[wbn]; | |
1da177e4 | 610 | |
884b600f | 611 | count = (count > acm->writesize) ? acm->writesize : count; |
5e9e75f8 | 612 | dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count); |
884b600f ON |
613 | memcpy(wb->buf, buf, count); |
614 | wb->len = count; | |
615 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
1da177e4 | 616 | |
6e47e069 AC |
617 | stat = acm_write_start(acm, wbn); |
618 | if (stat < 0) | |
1da177e4 | 619 | return stat; |
1da177e4 LT |
620 | return count; |
621 | } | |
622 | ||
623 | static int acm_tty_write_room(struct tty_struct *tty) | |
624 | { | |
625 | struct acm *acm = tty->driver_data; | |
626 | if (!ACM_READY(acm)) | |
627 | return -EINVAL; | |
884b600f ON |
628 | /* |
629 | * Do not let the line discipline to know that we have a reserve, | |
630 | * or it might get too enthusiastic. | |
631 | */ | |
934da463 | 632 | return acm_wb_is_avail(acm) ? acm->writesize : 0; |
1da177e4 LT |
633 | } |
634 | ||
635 | static int acm_tty_chars_in_buffer(struct tty_struct *tty) | |
636 | { | |
637 | struct acm *acm = tty->driver_data; | |
638 | if (!ACM_READY(acm)) | |
23198fda | 639 | return 0; |
884b600f ON |
640 | /* |
641 | * This is inaccurate (overcounts), but it works. | |
642 | */ | |
86478944 | 643 | return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; |
1da177e4 LT |
644 | } |
645 | ||
646 | static void acm_tty_throttle(struct tty_struct *tty) | |
647 | { | |
648 | struct acm *acm = tty->driver_data; | |
088c64f8 | 649 | |
1da177e4 LT |
650 | if (!ACM_READY(acm)) |
651 | return; | |
088c64f8 JH |
652 | |
653 | spin_lock_irq(&acm->read_lock); | |
654 | acm->throttle_req = 1; | |
655 | spin_unlock_irq(&acm->read_lock); | |
1da177e4 LT |
656 | } |
657 | ||
658 | static void acm_tty_unthrottle(struct tty_struct *tty) | |
659 | { | |
660 | struct acm *acm = tty->driver_data; | |
088c64f8 JH |
661 | unsigned int was_throttled; |
662 | ||
1da177e4 LT |
663 | if (!ACM_READY(acm)) |
664 | return; | |
088c64f8 JH |
665 | |
666 | spin_lock_irq(&acm->read_lock); | |
667 | was_throttled = acm->throttled; | |
668 | acm->throttled = 0; | |
669 | acm->throttle_req = 0; | |
670 | spin_unlock_irq(&acm->read_lock); | |
671 | ||
672 | if (was_throttled) | |
673 | acm_submit_read_urbs(acm, GFP_KERNEL); | |
1da177e4 LT |
674 | } |
675 | ||
9e98966c | 676 | static int acm_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
677 | { |
678 | struct acm *acm = tty->driver_data; | |
9e98966c | 679 | int retval; |
1da177e4 | 680 | if (!ACM_READY(acm)) |
9e98966c AC |
681 | return -EINVAL; |
682 | retval = acm_send_break(acm, state ? 0xffff : 0); | |
683 | if (retval < 0) | |
a5cc7ef9 JH |
684 | dev_dbg(&acm->control->dev, "%s - send break failed\n", |
685 | __func__); | |
9e98966c | 686 | return retval; |
1da177e4 LT |
687 | } |
688 | ||
60b33c13 | 689 | static int acm_tty_tiocmget(struct tty_struct *tty) |
1da177e4 LT |
690 | { |
691 | struct acm *acm = tty->driver_data; | |
692 | ||
693 | if (!ACM_READY(acm)) | |
694 | return -EINVAL; | |
695 | ||
696 | return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) | | |
697 | (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) | | |
698 | (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) | | |
699 | (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) | | |
700 | (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) | | |
701 | TIOCM_CTS; | |
702 | } | |
703 | ||
20b9d177 | 704 | static int acm_tty_tiocmset(struct tty_struct *tty, |
1da177e4 LT |
705 | unsigned int set, unsigned int clear) |
706 | { | |
707 | struct acm *acm = tty->driver_data; | |
708 | unsigned int newctrl; | |
709 | ||
710 | if (!ACM_READY(acm)) | |
711 | return -EINVAL; | |
712 | ||
713 | newctrl = acm->ctrlout; | |
6e47e069 AC |
714 | set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | |
715 | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
716 | clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | | |
717 | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
1da177e4 LT |
718 | |
719 | newctrl = (newctrl & ~clear) | set; | |
720 | ||
721 | if (acm->ctrlout == newctrl) | |
722 | return 0; | |
723 | return acm_set_control(acm, acm->ctrlout = newctrl); | |
724 | } | |
725 | ||
6caa76b7 | 726 | static int acm_tty_ioctl(struct tty_struct *tty, |
6e47e069 | 727 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
728 | { |
729 | struct acm *acm = tty->driver_data; | |
730 | ||
731 | if (!ACM_READY(acm)) | |
732 | return -EINVAL; | |
733 | ||
734 | return -ENOIOCTLCMD; | |
735 | } | |
736 | ||
4c4c9432 | 737 | static const __u32 acm_tty_speed[] = { |
1da177e4 LT |
738 | 0, 50, 75, 110, 134, 150, 200, 300, 600, |
739 | 1200, 1800, 2400, 4800, 9600, 19200, 38400, | |
740 | 57600, 115200, 230400, 460800, 500000, 576000, | |
741 | 921600, 1000000, 1152000, 1500000, 2000000, | |
742 | 2500000, 3000000, 3500000, 4000000 | |
743 | }; | |
744 | ||
4c4c9432 | 745 | static const __u8 acm_tty_size[] = { |
1da177e4 LT |
746 | 5, 6, 7, 8 |
747 | }; | |
748 | ||
6e47e069 AC |
749 | static void acm_tty_set_termios(struct tty_struct *tty, |
750 | struct ktermios *termios_old) | |
1da177e4 LT |
751 | { |
752 | struct acm *acm = tty->driver_data; | |
606d099c | 753 | struct ktermios *termios = tty->termios; |
1da177e4 LT |
754 | struct usb_cdc_line_coding newline; |
755 | int newctrl = acm->ctrlout; | |
756 | ||
757 | if (!ACM_READY(acm)) | |
758 | return; | |
759 | ||
9b80fee1 | 760 | newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty)); |
1da177e4 LT |
761 | newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; |
762 | newline.bParityType = termios->c_cflag & PARENB ? | |
6e47e069 AC |
763 | (termios->c_cflag & PARODD ? 1 : 2) + |
764 | (termios->c_cflag & CMSPAR ? 2 : 0) : 0; | |
1da177e4 | 765 | newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4]; |
6e47e069 | 766 | /* FIXME: Needs to clear unsupported bits in the termios */ |
1da177e4 LT |
767 | acm->clocal = ((termios->c_cflag & CLOCAL) != 0); |
768 | ||
769 | if (!newline.dwDTERate) { | |
770 | newline.dwDTERate = acm->line.dwDTERate; | |
771 | newctrl &= ~ACM_CTRL_DTR; | |
6e47e069 AC |
772 | } else |
773 | newctrl |= ACM_CTRL_DTR; | |
1da177e4 LT |
774 | |
775 | if (newctrl != acm->ctrlout) | |
776 | acm_set_control(acm, acm->ctrlout = newctrl); | |
777 | ||
778 | if (memcmp(&acm->line, &newline, sizeof newline)) { | |
779 | memcpy(&acm->line, &newline, sizeof newline); | |
a5cc7ef9 JH |
780 | dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n", |
781 | __func__, | |
782 | le32_to_cpu(newline.dwDTERate), | |
1da177e4 LT |
783 | newline.bCharFormat, newline.bParityType, |
784 | newline.bDataBits); | |
785 | acm_set_line(acm, &acm->line); | |
786 | } | |
787 | } | |
788 | ||
789 | /* | |
790 | * USB probe and disconnect routines. | |
791 | */ | |
792 | ||
830f4021 | 793 | /* Little helpers: write/read buffers free */ |
884b600f ON |
794 | static void acm_write_buffers_free(struct acm *acm) |
795 | { | |
796 | int i; | |
797 | struct acm_wb *wb; | |
a496c64f | 798 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); |
884b600f | 799 | |
6e47e069 | 800 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) |
997ea58e | 801 | usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah); |
884b600f ON |
802 | } |
803 | ||
830f4021 ON |
804 | static void acm_read_buffers_free(struct acm *acm) |
805 | { | |
806 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); | |
dab54c9f | 807 | int i; |
830f4021 | 808 | |
dab54c9f | 809 | for (i = 0; i < acm->rx_buflimit; i++) |
997ea58e | 810 | usb_free_coherent(usb_dev, acm->readsize, |
088c64f8 | 811 | acm->read_buffers[i].base, acm->read_buffers[i].dma); |
830f4021 ON |
812 | } |
813 | ||
884b600f ON |
814 | /* Little helper: write buffers allocate */ |
815 | static int acm_write_buffers_alloc(struct acm *acm) | |
816 | { | |
817 | int i; | |
818 | struct acm_wb *wb; | |
819 | ||
86478944 | 820 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { |
997ea58e | 821 | wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL, |
884b600f ON |
822 | &wb->dmah); |
823 | if (!wb->buf) { | |
824 | while (i != 0) { | |
825 | --i; | |
826 | --wb; | |
997ea58e | 827 | usb_free_coherent(acm->dev, acm->writesize, |
884b600f ON |
828 | wb->buf, wb->dmah); |
829 | } | |
830 | return -ENOMEM; | |
831 | } | |
832 | } | |
833 | return 0; | |
834 | } | |
835 | ||
10077d4a AC |
836 | static int acm_probe(struct usb_interface *intf, |
837 | const struct usb_device_id *id) | |
1da177e4 LT |
838 | { |
839 | struct usb_cdc_union_desc *union_header = NULL; | |
c4cabd28 | 840 | struct usb_cdc_country_functional_desc *cfd = NULL; |
c6dbf554 | 841 | unsigned char *buffer = intf->altsetting->extra; |
1da177e4 LT |
842 | int buflen = intf->altsetting->extralen; |
843 | struct usb_interface *control_interface; | |
844 | struct usb_interface *data_interface; | |
a2bfb4a3 ON |
845 | struct usb_endpoint_descriptor *epctrl = NULL; |
846 | struct usb_endpoint_descriptor *epread = NULL; | |
847 | struct usb_endpoint_descriptor *epwrite = NULL; | |
1da177e4 LT |
848 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
849 | struct acm *acm; | |
850 | int minor; | |
6e47e069 | 851 | int ctrlsize, readsize; |
1da177e4 LT |
852 | u8 *buf; |
853 | u8 ac_management_function = 0; | |
854 | u8 call_management_function = 0; | |
855 | int call_interface_num = -1; | |
fd5054c1 | 856 | int data_interface_num = -1; |
1da177e4 | 857 | unsigned long quirks; |
86478944 | 858 | int num_rx_buf; |
61a87adf | 859 | int i; |
a2bfb4a3 | 860 | int combined_interfaces = 0; |
1da177e4 | 861 | |
86478944 | 862 | /* normal quirks */ |
1da177e4 | 863 | quirks = (unsigned long)id->driver_info; |
86478944 ON |
864 | num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; |
865 | ||
866 | /* handle quirks deadly to normal probing*/ | |
1da177e4 LT |
867 | if (quirks == NO_UNION_NORMAL) { |
868 | data_interface = usb_ifnum_to_if(usb_dev, 1); | |
869 | control_interface = usb_ifnum_to_if(usb_dev, 0); | |
870 | goto skip_normal_probe; | |
871 | } | |
6e47e069 | 872 | |
1da177e4 LT |
873 | /* normal probing*/ |
874 | if (!buffer) { | |
9908a32e | 875 | dev_err(&intf->dev, "Weird descriptor references\n"); |
1da177e4 LT |
876 | return -EINVAL; |
877 | } | |
878 | ||
879 | if (!buflen) { | |
577045c0 TG |
880 | if (intf->cur_altsetting->endpoint && |
881 | intf->cur_altsetting->endpoint->extralen && | |
6e47e069 AC |
882 | intf->cur_altsetting->endpoint->extra) { |
883 | dev_dbg(&intf->dev, | |
884 | "Seeking extra descriptors on endpoint\n"); | |
1da177e4 LT |
885 | buflen = intf->cur_altsetting->endpoint->extralen; |
886 | buffer = intf->cur_altsetting->endpoint->extra; | |
887 | } else { | |
9908a32e GKH |
888 | dev_err(&intf->dev, |
889 | "Zero length descriptor references\n"); | |
1da177e4 LT |
890 | return -EINVAL; |
891 | } | |
892 | } | |
893 | ||
894 | while (buflen > 0) { | |
6e47e069 | 895 | if (buffer[1] != USB_DT_CS_INTERFACE) { |
9908a32e | 896 | dev_err(&intf->dev, "skipping garbage\n"); |
1da177e4 LT |
897 | goto next_desc; |
898 | } | |
899 | ||
6e47e069 AC |
900 | switch (buffer[2]) { |
901 | case USB_CDC_UNION_TYPE: /* we've found it */ | |
902 | if (union_header) { | |
903 | dev_err(&intf->dev, "More than one " | |
904 | "union descriptor, skipping ...\n"); | |
905 | goto next_desc; | |
1da177e4 | 906 | } |
6e47e069 AC |
907 | union_header = (struct usb_cdc_union_desc *)buffer; |
908 | break; | |
909 | case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/ | |
910 | cfd = (struct usb_cdc_country_functional_desc *)buffer; | |
911 | break; | |
912 | case USB_CDC_HEADER_TYPE: /* maybe check version */ | |
913 | break; /* for now we ignore it */ | |
914 | case USB_CDC_ACM_TYPE: | |
915 | ac_management_function = buffer[3]; | |
916 | break; | |
917 | case USB_CDC_CALL_MANAGEMENT_TYPE: | |
918 | call_management_function = buffer[3]; | |
919 | call_interface_num = buffer[4]; | |
ce126644 | 920 | if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3) |
6e47e069 AC |
921 | dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n"); |
922 | break; | |
923 | default: | |
924 | /* there are LOTS more CDC descriptors that | |
925 | * could legitimately be found here. | |
926 | */ | |
927 | dev_dbg(&intf->dev, "Ignoring descriptor: " | |
928 | "type %02x, length %d\n", | |
929 | buffer[2], buffer[0]); | |
930 | break; | |
931 | } | |
1da177e4 LT |
932 | next_desc: |
933 | buflen -= buffer[0]; | |
934 | buffer += buffer[0]; | |
935 | } | |
936 | ||
937 | if (!union_header) { | |
938 | if (call_interface_num > 0) { | |
6e47e069 | 939 | dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n"); |
fd5054c1 ES |
940 | /* quirks for Droids MuIn LCD */ |
941 | if (quirks & NO_DATA_INTERFACE) | |
942 | data_interface = usb_ifnum_to_if(usb_dev, 0); | |
943 | else | |
944 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num)); | |
1da177e4 LT |
945 | control_interface = intf; |
946 | } else { | |
a2bfb4a3 ON |
947 | if (intf->cur_altsetting->desc.bNumEndpoints != 3) { |
948 | dev_dbg(&intf->dev,"No union descriptor, giving up\n"); | |
949 | return -ENODEV; | |
950 | } else { | |
951 | dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n"); | |
952 | combined_interfaces = 1; | |
953 | control_interface = data_interface = intf; | |
954 | goto look_for_collapsed_interface; | |
955 | } | |
1da177e4 LT |
956 | } |
957 | } else { | |
958 | control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); | |
959 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0)); | |
960 | if (!control_interface || !data_interface) { | |
6e47e069 | 961 | dev_dbg(&intf->dev, "no interfaces\n"); |
1da177e4 LT |
962 | return -ENODEV; |
963 | } | |
964 | } | |
6e47e069 | 965 | |
1da177e4 | 966 | if (data_interface_num != call_interface_num) |
6e47e069 | 967 | dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n"); |
1da177e4 | 968 | |
a2bfb4a3 ON |
969 | if (control_interface == data_interface) { |
970 | /* some broken devices designed for windows work this way */ | |
971 | dev_warn(&intf->dev,"Control and data interfaces are not separated!\n"); | |
972 | combined_interfaces = 1; | |
973 | /* a popular other OS doesn't use it */ | |
974 | quirks |= NO_CAP_LINE; | |
975 | if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) { | |
976 | dev_err(&intf->dev, "This needs exactly 3 endpoints\n"); | |
977 | return -EINVAL; | |
978 | } | |
979 | look_for_collapsed_interface: | |
980 | for (i = 0; i < 3; i++) { | |
981 | struct usb_endpoint_descriptor *ep; | |
982 | ep = &data_interface->cur_altsetting->endpoint[i].desc; | |
983 | ||
984 | if (usb_endpoint_is_int_in(ep)) | |
985 | epctrl = ep; | |
986 | else if (usb_endpoint_is_bulk_out(ep)) | |
987 | epwrite = ep; | |
988 | else if (usb_endpoint_is_bulk_in(ep)) | |
989 | epread = ep; | |
990 | else | |
991 | return -EINVAL; | |
992 | } | |
993 | if (!epctrl || !epread || !epwrite) | |
994 | return -ENODEV; | |
995 | else | |
996 | goto made_compressed_probe; | |
997 | } | |
998 | ||
1da177e4 LT |
999 | skip_normal_probe: |
1000 | ||
1001 | /*workaround for switched interfaces */ | |
6e47e069 AC |
1002 | if (data_interface->cur_altsetting->desc.bInterfaceClass |
1003 | != CDC_DATA_INTERFACE_TYPE) { | |
1004 | if (control_interface->cur_altsetting->desc.bInterfaceClass | |
1005 | == CDC_DATA_INTERFACE_TYPE) { | |
1da177e4 | 1006 | struct usb_interface *t; |
6e47e069 AC |
1007 | dev_dbg(&intf->dev, |
1008 | "Your device has switched interfaces.\n"); | |
1da177e4 LT |
1009 | t = control_interface; |
1010 | control_interface = data_interface; | |
1011 | data_interface = t; | |
1012 | } else { | |
1013 | return -EINVAL; | |
1014 | } | |
1015 | } | |
74da5d68 AS |
1016 | |
1017 | /* Accept probe requests only for the control interface */ | |
a2bfb4a3 | 1018 | if (!combined_interfaces && intf != control_interface) |
74da5d68 | 1019 | return -ENODEV; |
6e47e069 | 1020 | |
a2bfb4a3 ON |
1021 | if (!combined_interfaces && usb_interface_claimed(data_interface)) { |
1022 | /* valid in this context */ | |
6e47e069 | 1023 | dev_dbg(&intf->dev, "The data interface isn't available\n"); |
1da177e4 LT |
1024 | return -EBUSY; |
1025 | } | |
1026 | ||
1027 | ||
1028 | if (data_interface->cur_altsetting->desc.bNumEndpoints < 2) | |
1029 | return -EINVAL; | |
1030 | ||
1031 | epctrl = &control_interface->cur_altsetting->endpoint[0].desc; | |
1032 | epread = &data_interface->cur_altsetting->endpoint[0].desc; | |
1033 | epwrite = &data_interface->cur_altsetting->endpoint[1].desc; | |
1034 | ||
1035 | ||
1036 | /* workaround for switched endpoints */ | |
45aea704 | 1037 | if (!usb_endpoint_dir_in(epread)) { |
1da177e4 LT |
1038 | /* descriptors are swapped */ |
1039 | struct usb_endpoint_descriptor *t; | |
6e47e069 AC |
1040 | dev_dbg(&intf->dev, |
1041 | "The data interface has switched endpoints\n"); | |
1da177e4 LT |
1042 | t = epread; |
1043 | epread = epwrite; | |
1044 | epwrite = t; | |
1045 | } | |
a2bfb4a3 | 1046 | made_compressed_probe: |
a5cc7ef9 | 1047 | dev_dbg(&intf->dev, "interfaces are valid\n"); |
1da177e4 LT |
1048 | for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++); |
1049 | ||
1050 | if (minor == ACM_TTY_MINORS) { | |
9908a32e | 1051 | dev_err(&intf->dev, "no more free acm devices\n"); |
1da177e4 LT |
1052 | return -ENODEV; |
1053 | } | |
1054 | ||
6e47e069 AC |
1055 | acm = kzalloc(sizeof(struct acm), GFP_KERNEL); |
1056 | if (acm == NULL) { | |
255ab56c | 1057 | dev_err(&intf->dev, "out of memory (acm kzalloc)\n"); |
1da177e4 LT |
1058 | goto alloc_fail; |
1059 | } | |
1da177e4 | 1060 | |
29cc8897 KM |
1061 | ctrlsize = usb_endpoint_maxp(epctrl); |
1062 | readsize = usb_endpoint_maxp(epread) * | |
6e47e069 | 1063 | (quirks == SINGLE_RX_URB ? 1 : 2); |
a2bfb4a3 | 1064 | acm->combined_interfaces = combined_interfaces; |
29cc8897 | 1065 | acm->writesize = usb_endpoint_maxp(epwrite) * 20; |
1da177e4 LT |
1066 | acm->control = control_interface; |
1067 | acm->data = data_interface; | |
1068 | acm->minor = minor; | |
1069 | acm->dev = usb_dev; | |
1070 | acm->ctrl_caps = ac_management_function; | |
a2bfb4a3 ON |
1071 | if (quirks & NO_CAP_LINE) |
1072 | acm->ctrl_caps &= ~USB_CDC_CAP_LINE; | |
1da177e4 LT |
1073 | acm->ctrlsize = ctrlsize; |
1074 | acm->readsize = readsize; | |
86478944 | 1075 | acm->rx_buflimit = num_rx_buf; |
c4028958 | 1076 | INIT_WORK(&acm->work, acm_softint); |
884b600f | 1077 | spin_lock_init(&acm->write_lock); |
61a87adf | 1078 | spin_lock_init(&acm->read_lock); |
1365baf7 | 1079 | mutex_init(&acm->mutex); |
61a87adf | 1080 | acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); |
cf7fdd57 ON |
1081 | acm->is_int_ep = usb_endpoint_xfer_int(epread); |
1082 | if (acm->is_int_ep) | |
1083 | acm->bInterval = epread->bInterval; | |
739e0285 AC |
1084 | tty_port_init(&acm->port); |
1085 | acm->port.ops = &acm_port_ops; | |
1da177e4 | 1086 | |
997ea58e | 1087 | buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); |
1da177e4 | 1088 | if (!buf) { |
255ab56c | 1089 | dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n"); |
1da177e4 LT |
1090 | goto alloc_fail2; |
1091 | } | |
1092 | acm->ctrl_buffer = buf; | |
1093 | ||
884b600f | 1094 | if (acm_write_buffers_alloc(acm) < 0) { |
255ab56c | 1095 | dev_err(&intf->dev, "out of memory (write buffer alloc)\n"); |
1da177e4 LT |
1096 | goto alloc_fail4; |
1097 | } | |
1da177e4 LT |
1098 | |
1099 | acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); | |
1100 | if (!acm->ctrlurb) { | |
255ab56c | 1101 | dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n"); |
1da177e4 LT |
1102 | goto alloc_fail5; |
1103 | } | |
86478944 | 1104 | for (i = 0; i < num_rx_buf; i++) { |
088c64f8 JH |
1105 | struct acm_rb *rb = &(acm->read_buffers[i]); |
1106 | struct urb *urb; | |
61a87adf | 1107 | |
74f5e1ba JH |
1108 | rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, |
1109 | &rb->dma); | |
1110 | if (!rb->base) { | |
1111 | dev_err(&intf->dev, "out of memory " | |
1112 | "(read bufs usb_alloc_coherent)\n"); | |
1113 | goto alloc_fail6; | |
1114 | } | |
088c64f8 JH |
1115 | rb->index = i; |
1116 | rb->instance = acm; | |
74f5e1ba | 1117 | |
088c64f8 JH |
1118 | urb = usb_alloc_urb(0, GFP_KERNEL); |
1119 | if (!urb) { | |
255ab56c | 1120 | dev_err(&intf->dev, |
6e47e069 | 1121 | "out of memory (read urbs usb_alloc_urb)\n"); |
c2572b78 | 1122 | goto alloc_fail6; |
61a87adf | 1123 | } |
088c64f8 JH |
1124 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1125 | urb->transfer_dma = rb->dma; | |
1126 | if (acm->is_int_ep) { | |
1127 | usb_fill_int_urb(urb, acm->dev, | |
1128 | acm->rx_endpoint, | |
1129 | rb->base, | |
1130 | acm->readsize, | |
1131 | acm_read_bulk_callback, rb, | |
1132 | acm->bInterval); | |
1133 | } else { | |
1134 | usb_fill_bulk_urb(urb, acm->dev, | |
1135 | acm->rx_endpoint, | |
1136 | rb->base, | |
1137 | acm->readsize, | |
1138 | acm_read_bulk_callback, rb); | |
1139 | } | |
61a87adf | 1140 | |
088c64f8 JH |
1141 | acm->read_urbs[i] = urb; |
1142 | __set_bit(i, &acm->read_urbs_free); | |
61a87adf | 1143 | } |
6e47e069 | 1144 | for (i = 0; i < ACM_NW; i++) { |
e4cf3aa8 DE |
1145 | struct acm_wb *snd = &(acm->wb[i]); |
1146 | ||
6e47e069 AC |
1147 | snd->urb = usb_alloc_urb(0, GFP_KERNEL); |
1148 | if (snd->urb == NULL) { | |
255ab56c | 1149 | dev_err(&intf->dev, |
59d7fec7 | 1150 | "out of memory (write urbs usb_alloc_urb)\n"); |
74f5e1ba | 1151 | goto alloc_fail7; |
e4cf3aa8 DE |
1152 | } |
1153 | ||
5186ffee AL |
1154 | if (usb_endpoint_xfer_int(epwrite)) |
1155 | usb_fill_int_urb(snd->urb, usb_dev, | |
1156 | usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), | |
1157 | NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval); | |
1158 | else | |
1159 | usb_fill_bulk_urb(snd->urb, usb_dev, | |
1160 | usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), | |
1161 | NULL, acm->writesize, acm_write_bulk, snd); | |
e4cf3aa8 DE |
1162 | snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1163 | snd->instance = acm; | |
1da177e4 LT |
1164 | } |
1165 | ||
6e47e069 | 1166 | usb_set_intfdata(intf, acm); |
c4cabd28 ON |
1167 | |
1168 | i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); | |
1169 | if (i < 0) | |
74f5e1ba | 1170 | goto alloc_fail7; |
c4cabd28 ON |
1171 | |
1172 | if (cfd) { /* export the country data */ | |
1173 | acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); | |
1174 | if (!acm->country_codes) | |
1175 | goto skip_countries; | |
1176 | acm->country_code_size = cfd->bLength - 4; | |
6e47e069 AC |
1177 | memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, |
1178 | cfd->bLength - 4); | |
c4cabd28 ON |
1179 | acm->country_rel_date = cfd->iCountryCodeRelDate; |
1180 | ||
1181 | i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); | |
1182 | if (i < 0) { | |
1183 | kfree(acm->country_codes); | |
1184 | goto skip_countries; | |
1185 | } | |
1186 | ||
6e47e069 AC |
1187 | i = device_create_file(&intf->dev, |
1188 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1189 | if (i < 0) { |
c2572b78 | 1190 | device_remove_file(&intf->dev, &dev_attr_wCountryCodes); |
c4cabd28 ON |
1191 | kfree(acm->country_codes); |
1192 | goto skip_countries; | |
1193 | } | |
1194 | } | |
1195 | ||
1196 | skip_countries: | |
6e47e069 | 1197 | usb_fill_int_urb(acm->ctrlurb, usb_dev, |
a2bfb4a3 ON |
1198 | usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), |
1199 | acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, | |
1200 | /* works around buggy devices */ | |
1201 | epctrl->bInterval ? epctrl->bInterval : 0xff); | |
1da177e4 LT |
1202 | acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1203 | acm->ctrlurb->transfer_dma = acm->ctrl_dma; | |
1204 | ||
1da177e4 LT |
1205 | dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); |
1206 | ||
1207 | acm_set_control(acm, acm->ctrlout); | |
1208 | ||
1209 | acm->line.dwDTERate = cpu_to_le32(9600); | |
1210 | acm->line.bDataBits = 8; | |
1211 | acm_set_line(acm, &acm->line); | |
1212 | ||
1213 | usb_driver_claim_interface(&acm_driver, data_interface, acm); | |
672c4e18 | 1214 | usb_set_intfdata(data_interface, acm); |
1da177e4 | 1215 | |
83ef344a | 1216 | usb_get_intf(control_interface); |
1217 | tty_register_device(acm_tty_driver, minor, &control_interface->dev); | |
1da177e4 LT |
1218 | |
1219 | acm_table[minor] = acm; | |
1da177e4 | 1220 | |
c4cabd28 | 1221 | return 0; |
74f5e1ba | 1222 | alloc_fail7: |
e4cf3aa8 DE |
1223 | for (i = 0; i < ACM_NW; i++) |
1224 | usb_free_urb(acm->wb[i].urb); | |
c2572b78 | 1225 | alloc_fail6: |
86478944 | 1226 | for (i = 0; i < num_rx_buf; i++) |
088c64f8 | 1227 | usb_free_urb(acm->read_urbs[i]); |
74f5e1ba | 1228 | acm_read_buffers_free(acm); |
1da177e4 LT |
1229 | usb_free_urb(acm->ctrlurb); |
1230 | alloc_fail5: | |
884b600f | 1231 | acm_write_buffers_free(acm); |
1da177e4 | 1232 | alloc_fail4: |
997ea58e | 1233 | usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
1da177e4 LT |
1234 | alloc_fail2: |
1235 | kfree(acm); | |
1236 | alloc_fail: | |
1237 | return -ENOMEM; | |
1238 | } | |
1239 | ||
1365baf7 ON |
1240 | static void stop_data_traffic(struct acm *acm) |
1241 | { | |
1242 | int i; | |
a5cc7ef9 JH |
1243 | |
1244 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
1365baf7 | 1245 | |
1365baf7 | 1246 | usb_kill_urb(acm->ctrlurb); |
6e47e069 | 1247 | for (i = 0; i < ACM_NW; i++) |
e4cf3aa8 | 1248 | usb_kill_urb(acm->wb[i].urb); |
1365baf7 | 1249 | for (i = 0; i < acm->rx_buflimit; i++) |
088c64f8 | 1250 | usb_kill_urb(acm->read_urbs[i]); |
1365baf7 ON |
1251 | |
1252 | cancel_work_sync(&acm->work); | |
1253 | } | |
1254 | ||
1da177e4 LT |
1255 | static void acm_disconnect(struct usb_interface *intf) |
1256 | { | |
c4cabd28 | 1257 | struct acm *acm = usb_get_intfdata(intf); |
1da177e4 | 1258 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
10077d4a | 1259 | struct tty_struct *tty; |
1da177e4 | 1260 | |
672c4e18 DB |
1261 | /* sibling interface is already cleaning up */ |
1262 | if (!acm) | |
86067eea | 1263 | return; |
672c4e18 DB |
1264 | |
1265 | mutex_lock(&open_mutex); | |
6e47e069 | 1266 | if (acm->country_codes) { |
74da5d68 AS |
1267 | device_remove_file(&acm->control->dev, |
1268 | &dev_attr_wCountryCodes); | |
1269 | device_remove_file(&acm->control->dev, | |
1270 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1271 | } |
74da5d68 | 1272 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); |
1da177e4 | 1273 | acm->dev = NULL; |
86067eea ON |
1274 | usb_set_intfdata(acm->control, NULL); |
1275 | usb_set_intfdata(acm->data, NULL); | |
1da177e4 | 1276 | |
1365baf7 | 1277 | stop_data_traffic(acm); |
1da177e4 | 1278 | |
884b600f | 1279 | acm_write_buffers_free(acm); |
997ea58e DM |
1280 | usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, |
1281 | acm->ctrl_dma); | |
830f4021 | 1282 | acm_read_buffers_free(acm); |
1da177e4 | 1283 | |
a2bfb4a3 ON |
1284 | if (!acm->combined_interfaces) |
1285 | usb_driver_release_interface(&acm_driver, intf == acm->control ? | |
830f4021 | 1286 | acm->data : acm->control); |
1da177e4 | 1287 | |
10077d4a | 1288 | if (acm->port.count == 0) { |
83ef344a | 1289 | acm_tty_unregister(acm); |
4186ecf8 | 1290 | mutex_unlock(&open_mutex); |
1da177e4 LT |
1291 | return; |
1292 | } | |
1293 | ||
4186ecf8 | 1294 | mutex_unlock(&open_mutex); |
10077d4a AC |
1295 | tty = tty_port_tty_get(&acm->port); |
1296 | if (tty) { | |
1297 | tty_hangup(tty); | |
1298 | tty_kref_put(tty); | |
1299 | } | |
1da177e4 LT |
1300 | } |
1301 | ||
35758589 | 1302 | #ifdef CONFIG_PM |
1365baf7 ON |
1303 | static int acm_suspend(struct usb_interface *intf, pm_message_t message) |
1304 | { | |
1305 | struct acm *acm = usb_get_intfdata(intf); | |
11ea859d ON |
1306 | int cnt; |
1307 | ||
65bfd296 | 1308 | if (message.event & PM_EVENT_AUTO) { |
11ea859d ON |
1309 | int b; |
1310 | ||
088c64f8 JH |
1311 | spin_lock_irq(&acm->write_lock); |
1312 | b = acm->transmitting; | |
1313 | spin_unlock_irq(&acm->write_lock); | |
11ea859d ON |
1314 | if (b) |
1315 | return -EBUSY; | |
1316 | } | |
1317 | ||
1318 | spin_lock_irq(&acm->read_lock); | |
1319 | spin_lock(&acm->write_lock); | |
1320 | cnt = acm->susp_count++; | |
1321 | spin_unlock(&acm->write_lock); | |
1322 | spin_unlock_irq(&acm->read_lock); | |
1365baf7 | 1323 | |
11ea859d | 1324 | if (cnt) |
1365baf7 ON |
1325 | return 0; |
1326 | /* | |
1327 | we treat opened interfaces differently, | |
1328 | we must guard against open | |
1329 | */ | |
1330 | mutex_lock(&acm->mutex); | |
1331 | ||
10077d4a | 1332 | if (acm->port.count) |
1365baf7 ON |
1333 | stop_data_traffic(acm); |
1334 | ||
1335 | mutex_unlock(&acm->mutex); | |
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | static int acm_resume(struct usb_interface *intf) | |
1340 | { | |
1341 | struct acm *acm = usb_get_intfdata(intf); | |
97d35f95 | 1342 | struct acm_wb *wb; |
1365baf7 | 1343 | int rv = 0; |
11ea859d | 1344 | int cnt; |
1365baf7 | 1345 | |
11ea859d ON |
1346 | spin_lock_irq(&acm->read_lock); |
1347 | acm->susp_count -= 1; | |
1348 | cnt = acm->susp_count; | |
1349 | spin_unlock_irq(&acm->read_lock); | |
1350 | ||
1351 | if (cnt) | |
1365baf7 ON |
1352 | return 0; |
1353 | ||
1354 | mutex_lock(&acm->mutex); | |
10077d4a | 1355 | if (acm->port.count) { |
1365baf7 | 1356 | rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO); |
97d35f95 ON |
1357 | |
1358 | spin_lock_irq(&acm->write_lock); | |
1359 | if (acm->delayed_wb) { | |
1360 | wb = acm->delayed_wb; | |
1361 | acm->delayed_wb = NULL; | |
1362 | spin_unlock_irq(&acm->write_lock); | |
f0730924 | 1363 | acm_start_wb(acm, wb); |
97d35f95 ON |
1364 | } else { |
1365 | spin_unlock_irq(&acm->write_lock); | |
1366 | } | |
1367 | ||
1368 | /* | |
1369 | * delayed error checking because we must | |
1370 | * do the write path at all cost | |
1371 | */ | |
1365baf7 | 1372 | if (rv < 0) |
11ea859d | 1373 | goto err_out; |
1365baf7 | 1374 | |
088c64f8 | 1375 | rv = acm_submit_read_urbs(acm, GFP_NOIO); |
1365baf7 ON |
1376 | } |
1377 | ||
1378 | err_out: | |
1379 | mutex_unlock(&acm->mutex); | |
1380 | return rv; | |
1381 | } | |
35758589 | 1382 | |
a91b0c50 FL |
1383 | static int acm_reset_resume(struct usb_interface *intf) |
1384 | { | |
1385 | struct acm *acm = usb_get_intfdata(intf); | |
1386 | struct tty_struct *tty; | |
1387 | ||
1388 | mutex_lock(&acm->mutex); | |
1389 | if (acm->port.count) { | |
1390 | tty = tty_port_tty_get(&acm->port); | |
1391 | if (tty) { | |
1392 | tty_hangup(tty); | |
1393 | tty_kref_put(tty); | |
1394 | } | |
1395 | } | |
1396 | mutex_unlock(&acm->mutex); | |
1397 | return acm_resume(intf); | |
1398 | } | |
1399 | ||
35758589 | 1400 | #endif /* CONFIG_PM */ |
c1479a92 AT |
1401 | |
1402 | #define NOKIA_PCSUITE_ACM_INFO(x) \ | |
1403 | USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \ | |
1404 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1405 | USB_CDC_ACM_PROTO_VENDOR) | |
1406 | ||
4035e456 TG |
1407 | #define SAMSUNG_PCSUITE_ACM_INFO(x) \ |
1408 | USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \ | |
1409 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1410 | USB_CDC_ACM_PROTO_VENDOR) | |
1411 | ||
1da177e4 LT |
1412 | /* |
1413 | * USB driver structure. | |
1414 | */ | |
1415 | ||
6ef4852b | 1416 | static const struct usb_device_id acm_ids[] = { |
1da177e4 LT |
1417 | /* quirky and broken devices */ |
1418 | { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ | |
1419 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1420 | }, | |
b0e2a705 AA |
1421 | { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ |
1422 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1423 | }, | |
0f9c7b4a AL |
1424 | { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ |
1425 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1426 | }, | |
8753e65e MO |
1427 | { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */ |
1428 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1429 | }, | |
91a9c921 CM |
1430 | { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */ |
1431 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1432 | }, | |
7abcf20b AC |
1433 | { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */ |
1434 | .driver_info = SINGLE_RX_URB, | |
1435 | }, | |
86478944 ON |
1436 | { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */ |
1437 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1438 | }, | |
3dd2ae81 ON |
1439 | { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ |
1440 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1441 | }, | |
9be8456c ON |
1442 | { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ |
1443 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1444 | }, | |
6149ed5e IM |
1445 | { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ |
1446 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1447 | }, | |
c8fd2c37 ES |
1448 | { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */ |
1449 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1450 | }, | |
c89c60e9 AC |
1451 | { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */ |
1452 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1453 | }, | |
cab98a0a XK |
1454 | { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */ |
1455 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1456 | }, | |
155df65a DT |
1457 | { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */ |
1458 | }, | |
c332b4e1 AR |
1459 | { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */ |
1460 | .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on | |
1461 | data interface instead of | |
1462 | communications interface. | |
1463 | Maybe we should define a new | |
1464 | quirk for this. */ | |
1465 | }, | |
1f17c502 KK |
1466 | { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */ |
1467 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1468 | }, | |
c3baa19b RN |
1469 | { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */ |
1470 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1471 | }, | |
9be8456c | 1472 | |
c1479a92 AT |
1473 | /* Nokia S60 phones expose two ACM channels. The first is |
1474 | * a modem and is picked up by the standard AT-command | |
1475 | * information below. The second is 'vendor-specific' but | |
1476 | * is treated as a serial device at the S60 end, so we want | |
1477 | * to expose it on Linux too. */ | |
1478 | { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */ | |
1479 | { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */ | |
1480 | { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */ | |
1481 | { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */ | |
1482 | { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */ | |
1483 | { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */ | |
1484 | { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */ | |
1485 | { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */ | |
1486 | { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */ | |
1487 | { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */ | |
1488 | { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */ | |
1489 | { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */ | |
1490 | { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */ | |
1491 | { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */ | |
1492 | { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */ | |
1493 | { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */ | |
1494 | { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */ | |
1495 | { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */ | |
1496 | { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */ | |
1497 | { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */ | |
1498 | { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */ | |
1499 | { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */ | |
1500 | { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */ | |
1501 | { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */ | |
1502 | { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */ | |
1503 | { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */ | |
1504 | { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */ | |
1505 | { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */ | |
1506 | { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */ | |
1507 | { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */ | |
1508 | { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */ | |
1509 | { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */ | |
1510 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1511 | { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */ | |
1512 | { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */ | |
1513 | { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */ | |
1514 | { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */ | |
1515 | { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */ | |
1516 | { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */ | |
1517 | { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */ | |
1518 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1519 | { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */ | |
1520 | { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */ | |
83a4eae9 | 1521 | { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */ |
4035e456 TG |
1522 | { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */ |
1523 | { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */ | |
1524 | { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */ | |
1525 | { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */ | |
1526 | { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */ | |
1527 | { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */ | |
1528 | { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */ | |
1529 | { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */ | |
1530 | { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */ | |
1531 | { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */ | |
721d92fc | 1532 | { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */ |
4061fde2 TG |
1533 | { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */ |
1534 | { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */ | |
4035e456 | 1535 | { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */ |
c1479a92 AT |
1536 | |
1537 | /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */ | |
1538 | ||
7c5d8c39 | 1539 | /* Support Lego NXT using pbLua firmware */ |
ce126644 JC |
1540 | { USB_DEVICE(0x0694, 0xff00), |
1541 | .driver_info = NOT_A_MODEM, | |
7893afc0 | 1542 | }, |
7c5d8c39 | 1543 | |
fd5054c1 ES |
1544 | /* Support for Droids MuIn LCD */ |
1545 | { USB_DEVICE(0x04d8, 0x000b), | |
1546 | .driver_info = NO_DATA_INTERFACE, | |
1547 | }, | |
1548 | ||
5b239f0a PC |
1549 | /* control interfaces without any protocol set */ |
1550 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1551 | USB_CDC_PROTO_NONE) }, | |
1552 | ||
1da177e4 LT |
1553 | /* control interfaces with various AT-command sets */ |
1554 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1555 | USB_CDC_ACM_PROTO_AT_V25TER) }, | |
1556 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1557 | USB_CDC_ACM_PROTO_AT_PCCA101) }, | |
1558 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1559 | USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) }, | |
1560 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1561 | USB_CDC_ACM_PROTO_AT_GSM) }, | |
1562 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
6e47e069 | 1563 | USB_CDC_ACM_PROTO_AT_3G) }, |
1da177e4 LT |
1564 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
1565 | USB_CDC_ACM_PROTO_AT_CDMA) }, | |
1566 | ||
1da177e4 LT |
1567 | { } |
1568 | }; | |
1569 | ||
6e47e069 | 1570 | MODULE_DEVICE_TABLE(usb, acm_ids); |
1da177e4 LT |
1571 | |
1572 | static struct usb_driver acm_driver = { | |
1da177e4 LT |
1573 | .name = "cdc_acm", |
1574 | .probe = acm_probe, | |
1575 | .disconnect = acm_disconnect, | |
35758589 | 1576 | #ifdef CONFIG_PM |
1365baf7 ON |
1577 | .suspend = acm_suspend, |
1578 | .resume = acm_resume, | |
a91b0c50 | 1579 | .reset_resume = acm_reset_resume, |
35758589 | 1580 | #endif |
1da177e4 | 1581 | .id_table = acm_ids, |
35758589 | 1582 | #ifdef CONFIG_PM |
1365baf7 | 1583 | .supports_autosuspend = 1, |
35758589 | 1584 | #endif |
1da177e4 LT |
1585 | }; |
1586 | ||
1587 | /* | |
1588 | * TTY driver structures. | |
1589 | */ | |
1590 | ||
b68e31d0 | 1591 | static const struct tty_operations acm_ops = { |
1da177e4 LT |
1592 | .open = acm_tty_open, |
1593 | .close = acm_tty_close, | |
10077d4a | 1594 | .hangup = acm_tty_hangup, |
1da177e4 LT |
1595 | .write = acm_tty_write, |
1596 | .write_room = acm_tty_write_room, | |
1597 | .ioctl = acm_tty_ioctl, | |
1598 | .throttle = acm_tty_throttle, | |
1599 | .unthrottle = acm_tty_unthrottle, | |
1600 | .chars_in_buffer = acm_tty_chars_in_buffer, | |
1601 | .break_ctl = acm_tty_break_ctl, | |
1602 | .set_termios = acm_tty_set_termios, | |
1603 | .tiocmget = acm_tty_tiocmget, | |
1604 | .tiocmset = acm_tty_tiocmset, | |
1605 | }; | |
1606 | ||
1607 | /* | |
1608 | * Init / exit. | |
1609 | */ | |
1610 | ||
1611 | static int __init acm_init(void) | |
1612 | { | |
1613 | int retval; | |
1614 | acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS); | |
1615 | if (!acm_tty_driver) | |
1616 | return -ENOMEM; | |
1617 | acm_tty_driver->owner = THIS_MODULE, | |
1618 | acm_tty_driver->driver_name = "acm", | |
1619 | acm_tty_driver->name = "ttyACM", | |
1da177e4 LT |
1620 | acm_tty_driver->major = ACM_TTY_MAJOR, |
1621 | acm_tty_driver->minor_start = 0, | |
1622 | acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, | |
1623 | acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, | |
331b8319 | 1624 | acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 | 1625 | acm_tty_driver->init_termios = tty_std_termios; |
6e47e069 AC |
1626 | acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | |
1627 | HUPCL | CLOCAL; | |
1da177e4 LT |
1628 | tty_set_operations(acm_tty_driver, &acm_ops); |
1629 | ||
1630 | retval = tty_register_driver(acm_tty_driver); | |
1631 | if (retval) { | |
1632 | put_tty_driver(acm_tty_driver); | |
1633 | return retval; | |
1634 | } | |
1635 | ||
1636 | retval = usb_register(&acm_driver); | |
1637 | if (retval) { | |
1638 | tty_unregister_driver(acm_tty_driver); | |
1639 | put_tty_driver(acm_tty_driver); | |
1640 | return retval; | |
1641 | } | |
1642 | ||
a2c7b935 | 1643 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
1644 | |
1645 | return 0; | |
1646 | } | |
1647 | ||
1648 | static void __exit acm_exit(void) | |
1649 | { | |
1650 | usb_deregister(&acm_driver); | |
1651 | tty_unregister_driver(acm_tty_driver); | |
1652 | put_tty_driver(acm_tty_driver); | |
1653 | } | |
1654 | ||
1655 | module_init(acm_init); | |
1656 | module_exit(acm_exit); | |
1657 | ||
6e47e069 AC |
1658 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1659 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 1660 | MODULE_LICENSE("GPL"); |
e766aeb8 | 1661 | MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR); |