Commit | Line | Data |
---|---|---|
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 | ||
7fb57a01 | 61 | static DEFINE_MUTEX(acm_table_lock); |
1da177e4 | 62 | |
24cb4502 JP |
63 | static void acm_tty_set_termios(struct tty_struct *tty, |
64 | struct ktermios *termios_old); | |
65 | ||
7fb57a01 HS |
66 | /* |
67 | * acm_table accessors | |
68 | */ | |
1da177e4 | 69 | |
7fb57a01 HS |
70 | /* |
71 | * Look up an ACM structure by index. If found and not disconnected, increment | |
72 | * its refcount and return it with its mutex held. | |
73 | */ | |
74 | static struct acm *acm_get_by_index(unsigned index) | |
75 | { | |
76 | struct acm *acm; | |
77 | ||
78 | mutex_lock(&acm_table_lock); | |
79 | acm = acm_table[index]; | |
80 | if (acm) { | |
81 | mutex_lock(&acm->mutex); | |
82 | if (acm->disconnected) { | |
83 | mutex_unlock(&acm->mutex); | |
84 | acm = NULL; | |
85 | } else { | |
86 | tty_port_get(&acm->port); | |
87 | mutex_unlock(&acm->mutex); | |
88 | } | |
89 | } | |
90 | mutex_unlock(&acm_table_lock); | |
91 | return acm; | |
92 | } | |
93 | ||
94 | /* | |
95 | * Try to find an available minor number and if found, associate it with 'acm'. | |
96 | */ | |
97 | static int acm_alloc_minor(struct acm *acm) | |
98 | { | |
99 | int minor; | |
100 | ||
101 | mutex_lock(&acm_table_lock); | |
102 | for (minor = 0; minor < ACM_TTY_MINORS; minor++) { | |
103 | if (!acm_table[minor]) { | |
104 | acm_table[minor] = acm; | |
105 | break; | |
106 | } | |
107 | } | |
108 | mutex_unlock(&acm_table_lock); | |
109 | ||
110 | return minor; | |
111 | } | |
112 | ||
113 | /* Release the minor number associated with 'acm'. */ | |
114 | static void acm_release_minor(struct acm *acm) | |
115 | { | |
116 | mutex_lock(&acm_table_lock); | |
117 | acm_table[acm->minor] = NULL; | |
118 | mutex_unlock(&acm_table_lock); | |
119 | } | |
739e0285 | 120 | |
1da177e4 LT |
121 | /* |
122 | * Functions for ACM control messages. | |
123 | */ | |
124 | ||
6e47e069 AC |
125 | static int acm_ctrl_msg(struct acm *acm, int request, int value, |
126 | void *buf, int len) | |
1da177e4 | 127 | { |
bae3f4c5 JH |
128 | int retval; |
129 | ||
130 | retval = usb_autopm_get_interface(acm->control); | |
131 | if (retval) | |
132 | return retval; | |
133 | ||
134 | retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), | |
1da177e4 LT |
135 | request, USB_RT_ACM, value, |
136 | acm->control->altsetting[0].desc.bInterfaceNumber, | |
137 | buf, len, 5000); | |
bae3f4c5 | 138 | |
a5cc7ef9 JH |
139 | dev_dbg(&acm->control->dev, |
140 | "%s - rq 0x%02x, val %#x, len %#x, result %d\n", | |
141 | __func__, request, value, len, retval); | |
bae3f4c5 JH |
142 | |
143 | usb_autopm_put_interface(acm->control); | |
144 | ||
1da177e4 LT |
145 | return retval < 0 ? retval : 0; |
146 | } | |
147 | ||
148 | /* devices aren't required to support these requests. | |
149 | * the cdc acm descriptor tells whether they do... | |
150 | */ | |
2a8cdfde JH |
151 | static inline int acm_set_control(struct acm *acm, int control) |
152 | { | |
153 | if (acm->quirks & QUIRK_CONTROL_LINE_STATE) | |
154 | return -EOPNOTSUPP; | |
155 | ||
156 | return acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, | |
157 | control, NULL, 0); | |
158 | } | |
159 | ||
1da177e4 LT |
160 | #define acm_set_line(acm, line) \ |
161 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line)) | |
162 | #define acm_send_break(acm, ms) \ | |
163 | acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0) | |
164 | ||
884b600f ON |
165 | /* |
166 | * Write buffer management. | |
167 | * All of these assume proper locks taken by the caller. | |
168 | */ | |
169 | ||
170 | static int acm_wb_alloc(struct acm *acm) | |
171 | { | |
172 | int i, wbn; | |
173 | struct acm_wb *wb; | |
174 | ||
e4cf3aa8 | 175 | wbn = 0; |
884b600f ON |
176 | i = 0; |
177 | for (;;) { | |
178 | wb = &acm->wb[wbn]; | |
179 | if (!wb->use) { | |
180 | wb->use = 1; | |
181 | return wbn; | |
182 | } | |
86478944 ON |
183 | wbn = (wbn + 1) % ACM_NW; |
184 | if (++i >= ACM_NW) | |
884b600f ON |
185 | return -1; |
186 | } | |
187 | } | |
188 | ||
884b600f ON |
189 | static int acm_wb_is_avail(struct acm *acm) |
190 | { | |
191 | int i, n; | |
e5fbab51 | 192 | unsigned long flags; |
884b600f | 193 | |
86478944 | 194 | n = ACM_NW; |
e5fbab51 | 195 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 | 196 | for (i = 0; i < ACM_NW; i++) |
86478944 | 197 | n -= acm->wb[i].use; |
e5fbab51 | 198 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
199 | return n; |
200 | } | |
201 | ||
884b600f | 202 | /* |
ad0b65ef | 203 | * Finish write. Caller must hold acm->write_lock |
884b600f | 204 | */ |
e4cf3aa8 | 205 | static void acm_write_done(struct acm *acm, struct acm_wb *wb) |
884b600f | 206 | { |
e4cf3aa8 | 207 | wb->use = 0; |
11ea859d | 208 | acm->transmitting--; |
97d35f95 | 209 | usb_autopm_put_interface_async(acm->control); |
884b600f ON |
210 | } |
211 | ||
212 | /* | |
213 | * Poke write. | |
11ea859d ON |
214 | * |
215 | * the caller is responsible for locking | |
884b600f | 216 | */ |
11ea859d ON |
217 | |
218 | static int acm_start_wb(struct acm *acm, struct acm_wb *wb) | |
219 | { | |
220 | int rc; | |
221 | ||
222 | acm->transmitting++; | |
223 | ||
224 | wb->urb->transfer_buffer = wb->buf; | |
225 | wb->urb->transfer_dma = wb->dmah; | |
226 | wb->urb->transfer_buffer_length = wb->len; | |
227 | wb->urb->dev = acm->dev; | |
228 | ||
6e47e069 AC |
229 | rc = usb_submit_urb(wb->urb, GFP_ATOMIC); |
230 | if (rc < 0) { | |
a5cc7ef9 JH |
231 | dev_err(&acm->data->dev, |
232 | "%s - usb_submit_urb(write bulk) failed: %d\n", | |
233 | __func__, rc); | |
11ea859d ON |
234 | acm_write_done(acm, wb); |
235 | } | |
236 | return rc; | |
237 | } | |
238 | ||
c4cabd28 ON |
239 | /* |
240 | * attributes exported through sysfs | |
241 | */ | |
242 | static ssize_t show_caps | |
243 | (struct device *dev, struct device_attribute *attr, char *buf) | |
244 | { | |
245 | struct usb_interface *intf = to_usb_interface(dev); | |
246 | struct acm *acm = usb_get_intfdata(intf); | |
247 | ||
248 | return sprintf(buf, "%d", acm->ctrl_caps); | |
249 | } | |
250 | static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL); | |
251 | ||
252 | static ssize_t show_country_codes | |
253 | (struct device *dev, struct device_attribute *attr, char *buf) | |
254 | { | |
255 | struct usb_interface *intf = to_usb_interface(dev); | |
256 | struct acm *acm = usb_get_intfdata(intf); | |
257 | ||
258 | memcpy(buf, acm->country_codes, acm->country_code_size); | |
259 | return acm->country_code_size; | |
260 | } | |
261 | ||
262 | static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL); | |
263 | ||
264 | static ssize_t show_country_rel_date | |
265 | (struct device *dev, struct device_attribute *attr, char *buf) | |
266 | { | |
267 | struct usb_interface *intf = to_usb_interface(dev); | |
268 | struct acm *acm = usb_get_intfdata(intf); | |
269 | ||
270 | return sprintf(buf, "%d", acm->country_rel_date); | |
271 | } | |
884b600f | 272 | |
c4cabd28 | 273 | static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL); |
1da177e4 LT |
274 | /* |
275 | * Interrupt handlers for various ACM device responses | |
276 | */ | |
277 | ||
278 | /* control interface reports status changes with "interrupt" transfers */ | |
7d12e780 | 279 | static void acm_ctrl_irq(struct urb *urb) |
1da177e4 LT |
280 | { |
281 | struct acm *acm = urb->context; | |
282 | struct usb_cdc_notification *dr = urb->transfer_buffer; | |
283 | unsigned char *data; | |
284 | int newctrl; | |
5a6a62bd | 285 | int difference; |
185d4058 GKH |
286 | int retval; |
287 | int status = urb->status; | |
1da177e4 | 288 | |
185d4058 | 289 | switch (status) { |
1da177e4 LT |
290 | case 0: |
291 | /* success */ | |
292 | break; | |
293 | case -ECONNRESET: | |
294 | case -ENOENT: | |
295 | case -ESHUTDOWN: | |
296 | /* this urb is terminated, clean up */ | |
a5cc7ef9 JH |
297 | dev_dbg(&acm->control->dev, |
298 | "%s - urb shutting down with status: %d\n", | |
299 | __func__, status); | |
1da177e4 LT |
300 | return; |
301 | default: | |
a5cc7ef9 JH |
302 | dev_dbg(&acm->control->dev, |
303 | "%s - nonzero urb status received: %d\n", | |
304 | __func__, status); | |
1da177e4 LT |
305 | goto exit; |
306 | } | |
307 | ||
7e7797e7 JH |
308 | usb_mark_last_busy(acm->dev); |
309 | ||
1da177e4 LT |
310 | data = (unsigned char *)(dr + 1); |
311 | switch (dr->bNotificationType) { | |
6e47e069 | 312 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: |
a5cc7ef9 JH |
313 | dev_dbg(&acm->control->dev, "%s - network connection: %d\n", |
314 | __func__, dr->wValue); | |
6e47e069 | 315 | break; |
1da177e4 | 316 | |
6e47e069 | 317 | case USB_CDC_NOTIFY_SERIAL_STATE: |
6e47e069 | 318 | newctrl = get_unaligned_le16(data); |
1da177e4 | 319 | |
aa27a094 JS |
320 | if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { |
321 | dev_dbg(&acm->control->dev, "%s - calling hangup\n", | |
322 | __func__); | |
323 | tty_port_tty_hangup(&acm->port, false); | |
6e47e069 | 324 | } |
1da177e4 | 325 | |
5a6a62bd ON |
326 | difference = acm->ctrlin ^ newctrl; |
327 | spin_lock(&acm->read_lock); | |
6e47e069 | 328 | acm->ctrlin = newctrl; |
5a6a62bd ON |
329 | acm->oldcount = acm->iocount; |
330 | ||
331 | if (difference & ACM_CTRL_DSR) | |
332 | acm->iocount.dsr++; | |
333 | if (difference & ACM_CTRL_BRK) | |
334 | acm->iocount.brk++; | |
335 | if (difference & ACM_CTRL_RI) | |
336 | acm->iocount.rng++; | |
337 | if (difference & ACM_CTRL_DCD) | |
338 | acm->iocount.dcd++; | |
339 | if (difference & ACM_CTRL_FRAMING) | |
340 | acm->iocount.frame++; | |
341 | if (difference & ACM_CTRL_PARITY) | |
342 | acm->iocount.parity++; | |
343 | if (difference & ACM_CTRL_OVERRUN) | |
344 | acm->iocount.overrun++; | |
345 | spin_unlock(&acm->read_lock); | |
346 | ||
347 | if (difference) | |
348 | wake_up_all(&acm->wioctl); | |
1da177e4 | 349 | |
5a6a62bd | 350 | break; |
1da177e4 | 351 | |
6e47e069 | 352 | default: |
a5cc7ef9 JH |
353 | dev_dbg(&acm->control->dev, |
354 | "%s - unknown notification %d received: index %d " | |
355 | "len %d data0 %d data1 %d\n", | |
356 | __func__, | |
6e47e069 AC |
357 | dr->bNotificationType, dr->wIndex, |
358 | dr->wLength, data[0], data[1]); | |
359 | break; | |
1da177e4 LT |
360 | } |
361 | exit: | |
6e47e069 | 362 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
6c8074e9 | 363 | if (retval && retval != -EPERM) |
1d9846e5 JH |
364 | dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n", |
365 | __func__, retval); | |
1da177e4 LT |
366 | } |
367 | ||
088c64f8 | 368 | static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) |
1da177e4 | 369 | { |
088c64f8 | 370 | int res; |
185d4058 | 371 | |
088c64f8 JH |
372 | if (!test_and_clear_bit(index, &acm->read_urbs_free)) |
373 | return 0; | |
1da177e4 | 374 | |
088c64f8 JH |
375 | dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index); |
376 | ||
377 | res = usb_submit_urb(acm->read_urbs[index], mem_flags); | |
378 | if (res) { | |
379 | if (res != -EPERM) { | |
380 | dev_err(&acm->data->dev, | |
381 | "%s - usb_submit_urb failed: %d\n", | |
382 | __func__, res); | |
383 | } | |
384 | set_bit(index, &acm->read_urbs_free); | |
385 | return res; | |
11ea859d | 386 | } |
1da177e4 | 387 | |
088c64f8 JH |
388 | return 0; |
389 | } | |
1da177e4 | 390 | |
088c64f8 JH |
391 | static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags) |
392 | { | |
393 | int res; | |
394 | int i; | |
61a87adf | 395 | |
088c64f8 JH |
396 | for (i = 0; i < acm->rx_buflimit; ++i) { |
397 | res = acm_submit_read_urb(acm, i, mem_flags); | |
398 | if (res) | |
399 | return res; | |
86478944 | 400 | } |
088c64f8 JH |
401 | |
402 | return 0; | |
1da177e4 LT |
403 | } |
404 | ||
088c64f8 | 405 | static void acm_process_read_urb(struct acm *acm, struct urb *urb) |
1da177e4 | 406 | { |
088c64f8 | 407 | if (!urb->actual_length) |
ca79b7b4 | 408 | return; |
61a87adf | 409 | |
05c7cd39 JS |
410 | tty_insert_flip_string(&acm->port, urb->transfer_buffer, |
411 | urb->actual_length); | |
2e124b4a | 412 | tty_flip_buffer_push(&acm->port); |
088c64f8 | 413 | } |
10077d4a | 414 | |
088c64f8 JH |
415 | static void acm_read_bulk_callback(struct urb *urb) |
416 | { | |
417 | struct acm_rb *rb = urb->context; | |
418 | struct acm *acm = rb->instance; | |
419 | unsigned long flags; | |
36e59e0d | 420 | int status = urb->status; |
61a87adf | 421 | |
088c64f8 JH |
422 | dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__, |
423 | rb->index, urb->actual_length); | |
61a87adf | 424 | |
088c64f8 | 425 | if (!acm->dev) { |
36e59e0d | 426 | set_bit(rb->index, &acm->read_urbs_free); |
088c64f8 JH |
427 | dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__); |
428 | return; | |
429 | } | |
61a87adf | 430 | |
4132cd02 | 431 | if (status) { |
36e59e0d | 432 | set_bit(rb->index, &acm->read_urbs_free); |
088c64f8 | 433 | dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n", |
36e59e0d | 434 | __func__, status); |
088c64f8 | 435 | return; |
61a87adf | 436 | } |
4a8ee505 JH |
437 | |
438 | usb_mark_last_busy(acm->dev); | |
439 | ||
088c64f8 | 440 | acm_process_read_urb(acm, urb); |
36e59e0d ON |
441 | /* |
442 | * Unthrottle may run on another CPU which needs to see events | |
443 | * in the same order. Submission has an implict barrier | |
444 | */ | |
445 | smp_mb__before_atomic(); | |
446 | set_bit(rb->index, &acm->read_urbs_free); | |
088c64f8 JH |
447 | |
448 | /* throttle device if requested by tty */ | |
11ea859d | 449 | spin_lock_irqsave(&acm->read_lock, flags); |
088c64f8 | 450 | acm->throttled = acm->throttle_req; |
bbf0cb3e | 451 | if (!acm->throttled) { |
088c64f8 JH |
452 | spin_unlock_irqrestore(&acm->read_lock, flags); |
453 | acm_submit_read_urb(acm, rb->index, GFP_ATOMIC); | |
454 | } else { | |
455 | spin_unlock_irqrestore(&acm->read_lock, flags); | |
456 | } | |
1da177e4 LT |
457 | } |
458 | ||
459 | /* data interface wrote those outgoing bytes */ | |
7d12e780 | 460 | static void acm_write_bulk(struct urb *urb) |
1da177e4 | 461 | { |
cdc97792 | 462 | struct acm_wb *wb = urb->context; |
e5fbab51 | 463 | struct acm *acm = wb->instance; |
ad0b65ef | 464 | unsigned long flags; |
4132cd02 | 465 | int status = urb->status; |
1da177e4 | 466 | |
4132cd02 | 467 | if (status || (urb->actual_length != urb->transfer_buffer_length)) |
4fa4626c | 468 | dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n", |
1d9846e5 | 469 | __func__, |
e5fbab51 DB |
470 | urb->actual_length, |
471 | urb->transfer_buffer_length, | |
4132cd02 | 472 | status); |
1da177e4 | 473 | |
ad0b65ef | 474 | spin_lock_irqsave(&acm->write_lock, flags); |
e4cf3aa8 | 475 | acm_write_done(acm, wb); |
ad0b65ef | 476 | spin_unlock_irqrestore(&acm->write_lock, flags); |
99823f45 | 477 | schedule_work(&acm->work); |
1da177e4 LT |
478 | } |
479 | ||
c4028958 | 480 | static void acm_softint(struct work_struct *work) |
1da177e4 | 481 | { |
c4028958 | 482 | struct acm *acm = container_of(work, struct acm, work); |
e5fbab51 | 483 | |
1d9846e5 JH |
484 | dev_vdbg(&acm->data->dev, "%s\n", __func__); |
485 | ||
6aad04f2 | 486 | tty_port_tty_wakeup(&acm->port); |
1da177e4 LT |
487 | } |
488 | ||
489 | /* | |
490 | * TTY handlers | |
491 | */ | |
492 | ||
7fb57a01 | 493 | static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty) |
1da177e4 LT |
494 | { |
495 | struct acm *acm; | |
7fb57a01 | 496 | int retval; |
1da177e4 | 497 | |
7fb57a01 | 498 | dev_dbg(tty->dev, "%s\n", __func__); |
1da177e4 | 499 | |
7fb57a01 HS |
500 | acm = acm_get_by_index(tty->index); |
501 | if (!acm) | |
502 | return -ENODEV; | |
a5cc7ef9 | 503 | |
f8a8c10f | 504 | retval = tty_standard_install(driver, tty); |
7fb57a01 HS |
505 | if (retval) |
506 | goto error_init_termios; | |
10077d4a | 507 | |
1da177e4 | 508 | tty->driver_data = acm; |
1da177e4 | 509 | |
7fb57a01 HS |
510 | return 0; |
511 | ||
512 | error_init_termios: | |
513 | tty_port_put(&acm->port); | |
514 | return retval; | |
515 | } | |
516 | ||
517 | static int acm_tty_open(struct tty_struct *tty, struct file *filp) | |
518 | { | |
519 | struct acm *acm = tty->driver_data; | |
520 | ||
521 | dev_dbg(tty->dev, "%s\n", __func__); | |
522 | ||
523 | return tty_port_open(&acm->port, tty, filp); | |
524 | } | |
525 | ||
0943d8ea JH |
526 | static void acm_port_dtr_rts(struct tty_port *port, int raise) |
527 | { | |
528 | struct acm *acm = container_of(port, struct acm, port); | |
529 | int val; | |
530 | int res; | |
531 | ||
532 | if (raise) | |
533 | val = ACM_CTRL_DTR | ACM_CTRL_RTS; | |
534 | else | |
535 | val = 0; | |
536 | ||
537 | /* FIXME: add missing ctrlout locking throughout driver */ | |
538 | acm->ctrlout = val; | |
539 | ||
540 | res = acm_set_control(acm, val); | |
541 | if (res && (acm->ctrl_caps & USB_CDC_CAP_LINE)) | |
542 | dev_err(&acm->control->dev, "failed to set dtr/rts\n"); | |
543 | } | |
544 | ||
7fb57a01 HS |
545 | static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) |
546 | { | |
547 | struct acm *acm = container_of(port, struct acm, port); | |
548 | int retval = -ENODEV; | |
e4c36076 | 549 | int i; |
7fb57a01 HS |
550 | |
551 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
1365baf7 ON |
552 | |
553 | mutex_lock(&acm->mutex); | |
7fb57a01 HS |
554 | if (acm->disconnected) |
555 | goto disconnected; | |
556 | ||
557 | retval = usb_autopm_get_interface(acm->control); | |
558 | if (retval) | |
559 | goto error_get_interface; | |
560 | ||
561 | /* | |
562 | * FIXME: Why do we need this? Allocating 64K of physically contiguous | |
563 | * memory is really nasty... | |
564 | */ | |
565 | set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); | |
566 | acm->control->needs_remote_wakeup = 1; | |
1365baf7 | 567 | |
1da177e4 | 568 | acm->ctrlurb->dev = acm->dev; |
8727bf68 JH |
569 | retval = usb_submit_urb(acm->ctrlurb, GFP_KERNEL); |
570 | if (retval) { | |
a5cc7ef9 JH |
571 | dev_err(&acm->control->dev, |
572 | "%s - usb_submit_urb(ctrl irq) failed\n", __func__); | |
7fb57a01 | 573 | goto error_submit_urb; |
1da177e4 LT |
574 | } |
575 | ||
24cb4502 JP |
576 | acm_tty_set_termios(tty, NULL); |
577 | ||
6c4707f3 OM |
578 | /* |
579 | * Unthrottle device in case the TTY was closed while throttled. | |
580 | */ | |
581 | spin_lock_irq(&acm->read_lock); | |
582 | acm->throttled = 0; | |
583 | acm->throttle_req = 0; | |
584 | spin_unlock_irq(&acm->read_lock); | |
585 | ||
8727bf68 JH |
586 | retval = acm_submit_read_urbs(acm, GFP_KERNEL); |
587 | if (retval) | |
7fb57a01 | 588 | goto error_submit_read_urbs; |
2b626dc1 | 589 | |
703df329 JH |
590 | usb_autopm_put_interface(acm->control); |
591 | ||
1365baf7 | 592 | mutex_unlock(&acm->mutex); |
1da177e4 | 593 | |
7fb57a01 HS |
594 | return 0; |
595 | ||
596 | error_submit_read_urbs: | |
e4c36076 JH |
597 | for (i = 0; i < acm->rx_buflimit; i++) |
598 | usb_kill_urb(acm->read_urbs[i]); | |
7fb57a01 HS |
599 | usb_kill_urb(acm->ctrlurb); |
600 | error_submit_urb: | |
703df329 | 601 | usb_autopm_put_interface(acm->control); |
7fb57a01 HS |
602 | error_get_interface: |
603 | disconnected: | |
604 | mutex_unlock(&acm->mutex); | |
8727bf68 JH |
605 | |
606 | return usb_translate_errors(retval); | |
1da177e4 LT |
607 | } |
608 | ||
7fb57a01 | 609 | static void acm_port_destruct(struct tty_port *port) |
83ef344a | 610 | { |
7fb57a01 HS |
611 | struct acm *acm = container_of(port, struct acm, port); |
612 | ||
613 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
61a87adf | 614 | |
7fb57a01 | 615 | acm_release_minor(acm); |
83ef344a | 616 | usb_put_intf(acm->control); |
c4cabd28 | 617 | kfree(acm->country_codes); |
83ef344a | 618 | kfree(acm); |
619 | } | |
620 | ||
7fb57a01 | 621 | static void acm_port_shutdown(struct tty_port *port) |
10077d4a | 622 | { |
7fb57a01 | 623 | struct acm *acm = container_of(port, struct acm, port); |
140cb81a JH |
624 | struct urb *urb; |
625 | struct acm_wb *wb; | |
dab54c9f JH |
626 | int i; |
627 | ||
7fb57a01 HS |
628 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
629 | ||
b1d42efc JH |
630 | /* |
631 | * Need to grab write_lock to prevent race with resume, but no need to | |
632 | * hold it due to the tty-port initialised flag. | |
633 | */ | |
634 | spin_lock_irq(&acm->write_lock); | |
635 | spin_unlock_irq(&acm->write_lock); | |
636 | ||
637 | usb_autopm_get_interface_no_resume(acm->control); | |
638 | acm->control->needs_remote_wakeup = 0; | |
639 | usb_autopm_put_interface(acm->control); | |
640 | ||
89e54e44 JH |
641 | for (;;) { |
642 | urb = usb_get_from_anchor(&acm->delayed); | |
643 | if (!urb) | |
644 | break; | |
645 | wb = urb->context; | |
646 | wb->use = 0; | |
647 | usb_autopm_put_interface_async(acm->control); | |
10077d4a | 648 | } |
89e54e44 JH |
649 | |
650 | usb_kill_urb(acm->ctrlurb); | |
651 | for (i = 0; i < ACM_NW; i++) | |
652 | usb_kill_urb(acm->wb[i].urb); | |
653 | for (i = 0; i < acm->rx_buflimit; i++) | |
654 | usb_kill_urb(acm->read_urbs[i]); | |
7fb57a01 HS |
655 | } |
656 | ||
657 | static void acm_tty_cleanup(struct tty_struct *tty) | |
658 | { | |
659 | struct acm *acm = tty->driver_data; | |
660 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
661 | tty_port_put(&acm->port); | |
10077d4a AC |
662 | } |
663 | ||
664 | static void acm_tty_hangup(struct tty_struct *tty) | |
665 | { | |
666 | struct acm *acm = tty->driver_data; | |
7fb57a01 | 667 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
10077d4a | 668 | tty_port_hangup(&acm->port); |
10077d4a AC |
669 | } |
670 | ||
1da177e4 LT |
671 | static void acm_tty_close(struct tty_struct *tty, struct file *filp) |
672 | { | |
673 | struct acm *acm = tty->driver_data; | |
7fb57a01 HS |
674 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
675 | tty_port_close(&acm->port, tty, filp); | |
1da177e4 LT |
676 | } |
677 | ||
6e47e069 AC |
678 | static int acm_tty_write(struct tty_struct *tty, |
679 | const unsigned char *buf, int count) | |
1da177e4 LT |
680 | { |
681 | struct acm *acm = tty->driver_data; | |
682 | int stat; | |
884b600f ON |
683 | unsigned long flags; |
684 | int wbn; | |
685 | struct acm_wb *wb; | |
686 | ||
1da177e4 LT |
687 | if (!count) |
688 | return 0; | |
689 | ||
5e9e75f8 | 690 | dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count); |
a5cc7ef9 | 691 | |
884b600f | 692 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 AC |
693 | wbn = acm_wb_alloc(acm); |
694 | if (wbn < 0) { | |
884b600f | 695 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
696 | return 0; |
697 | } | |
698 | wb = &acm->wb[wbn]; | |
1da177e4 | 699 | |
71c2fb03 GKH |
700 | if (!acm->dev) { |
701 | wb->use = 0; | |
702 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
703 | return -ENODEV; | |
704 | } | |
705 | ||
884b600f | 706 | count = (count > acm->writesize) ? acm->writesize : count; |
5e9e75f8 | 707 | dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count); |
884b600f ON |
708 | memcpy(wb->buf, buf, count); |
709 | wb->len = count; | |
71c2fb03 | 710 | |
183a4508 JH |
711 | stat = usb_autopm_get_interface_async(acm->control); |
712 | if (stat) { | |
713 | wb->use = 0; | |
714 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
715 | return stat; | |
716 | } | |
717 | ||
71c2fb03 | 718 | if (acm->susp_count) { |
140cb81a | 719 | usb_anchor_urb(wb->urb, &acm->delayed); |
71c2fb03 | 720 | spin_unlock_irqrestore(&acm->write_lock, flags); |
140cb81a | 721 | return count; |
71c2fb03 | 722 | } |
71c2fb03 GKH |
723 | |
724 | stat = acm_start_wb(acm, wb); | |
884b600f | 725 | spin_unlock_irqrestore(&acm->write_lock, flags); |
1da177e4 | 726 | |
6e47e069 | 727 | if (stat < 0) |
1da177e4 | 728 | return stat; |
1da177e4 LT |
729 | return count; |
730 | } | |
731 | ||
732 | static int acm_tty_write_room(struct tty_struct *tty) | |
733 | { | |
734 | struct acm *acm = tty->driver_data; | |
884b600f ON |
735 | /* |
736 | * Do not let the line discipline to know that we have a reserve, | |
737 | * or it might get too enthusiastic. | |
738 | */ | |
934da463 | 739 | return acm_wb_is_avail(acm) ? acm->writesize : 0; |
1da177e4 LT |
740 | } |
741 | ||
742 | static int acm_tty_chars_in_buffer(struct tty_struct *tty) | |
743 | { | |
744 | struct acm *acm = tty->driver_data; | |
7fb57a01 HS |
745 | /* |
746 | * if the device was unplugged then any remaining characters fell out | |
747 | * of the connector ;) | |
748 | */ | |
749 | if (acm->disconnected) | |
23198fda | 750 | return 0; |
884b600f ON |
751 | /* |
752 | * This is inaccurate (overcounts), but it works. | |
753 | */ | |
86478944 | 754 | return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; |
1da177e4 LT |
755 | } |
756 | ||
757 | static void acm_tty_throttle(struct tty_struct *tty) | |
758 | { | |
759 | struct acm *acm = tty->driver_data; | |
088c64f8 | 760 | |
088c64f8 JH |
761 | spin_lock_irq(&acm->read_lock); |
762 | acm->throttle_req = 1; | |
763 | spin_unlock_irq(&acm->read_lock); | |
1da177e4 LT |
764 | } |
765 | ||
766 | static void acm_tty_unthrottle(struct tty_struct *tty) | |
767 | { | |
768 | struct acm *acm = tty->driver_data; | |
088c64f8 JH |
769 | unsigned int was_throttled; |
770 | ||
088c64f8 JH |
771 | spin_lock_irq(&acm->read_lock); |
772 | was_throttled = acm->throttled; | |
773 | acm->throttled = 0; | |
774 | acm->throttle_req = 0; | |
775 | spin_unlock_irq(&acm->read_lock); | |
776 | ||
777 | if (was_throttled) | |
778 | acm_submit_read_urbs(acm, GFP_KERNEL); | |
1da177e4 LT |
779 | } |
780 | ||
9e98966c | 781 | static int acm_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
782 | { |
783 | struct acm *acm = tty->driver_data; | |
9e98966c | 784 | int retval; |
7fb57a01 | 785 | |
9e98966c AC |
786 | retval = acm_send_break(acm, state ? 0xffff : 0); |
787 | if (retval < 0) | |
a5cc7ef9 JH |
788 | dev_dbg(&acm->control->dev, "%s - send break failed\n", |
789 | __func__); | |
9e98966c | 790 | return retval; |
1da177e4 LT |
791 | } |
792 | ||
60b33c13 | 793 | static int acm_tty_tiocmget(struct tty_struct *tty) |
1da177e4 LT |
794 | { |
795 | struct acm *acm = tty->driver_data; | |
796 | ||
1da177e4 LT |
797 | return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) | |
798 | (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) | | |
799 | (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) | | |
800 | (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) | | |
801 | (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) | | |
802 | TIOCM_CTS; | |
803 | } | |
804 | ||
20b9d177 | 805 | static int acm_tty_tiocmset(struct tty_struct *tty, |
1da177e4 LT |
806 | unsigned int set, unsigned int clear) |
807 | { | |
808 | struct acm *acm = tty->driver_data; | |
809 | unsigned int newctrl; | |
810 | ||
1da177e4 | 811 | newctrl = acm->ctrlout; |
6e47e069 AC |
812 | set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | |
813 | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
814 | clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | | |
815 | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
1da177e4 LT |
816 | |
817 | newctrl = (newctrl & ~clear) | set; | |
818 | ||
819 | if (acm->ctrlout == newctrl) | |
820 | return 0; | |
821 | return acm_set_control(acm, acm->ctrlout = newctrl); | |
822 | } | |
823 | ||
18c75720 ON |
824 | static int get_serial_info(struct acm *acm, struct serial_struct __user *info) |
825 | { | |
826 | struct serial_struct tmp; | |
827 | ||
828 | if (!info) | |
829 | return -EINVAL; | |
830 | ||
831 | memset(&tmp, 0, sizeof(tmp)); | |
832 | tmp.flags = ASYNC_LOW_LATENCY; | |
833 | tmp.xmit_fifo_size = acm->writesize; | |
834 | tmp.baud_base = le32_to_cpu(acm->line.dwDTERate); | |
ba2d8ce9 DW |
835 | tmp.close_delay = acm->port.close_delay / 10; |
836 | tmp.closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? | |
837 | ASYNC_CLOSING_WAIT_NONE : | |
838 | acm->port.closing_wait / 10; | |
18c75720 ON |
839 | |
840 | if (copy_to_user(info, &tmp, sizeof(tmp))) | |
841 | return -EFAULT; | |
842 | else | |
843 | return 0; | |
844 | } | |
845 | ||
ba2d8ce9 DW |
846 | static int set_serial_info(struct acm *acm, |
847 | struct serial_struct __user *newinfo) | |
848 | { | |
849 | struct serial_struct new_serial; | |
850 | unsigned int closing_wait, close_delay; | |
851 | int retval = 0; | |
852 | ||
853 | if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) | |
854 | return -EFAULT; | |
855 | ||
856 | close_delay = new_serial.close_delay * 10; | |
857 | closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ? | |
858 | ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10; | |
859 | ||
860 | mutex_lock(&acm->port.mutex); | |
861 | ||
862 | if (!capable(CAP_SYS_ADMIN)) { | |
863 | if ((close_delay != acm->port.close_delay) || | |
864 | (closing_wait != acm->port.closing_wait)) | |
865 | retval = -EPERM; | |
866 | else | |
867 | retval = -EOPNOTSUPP; | |
868 | } else { | |
869 | acm->port.close_delay = close_delay; | |
870 | acm->port.closing_wait = closing_wait; | |
871 | } | |
872 | ||
873 | mutex_unlock(&acm->port.mutex); | |
874 | return retval; | |
875 | } | |
876 | ||
5a6a62bd ON |
877 | static int wait_serial_change(struct acm *acm, unsigned long arg) |
878 | { | |
879 | int rv = 0; | |
880 | DECLARE_WAITQUEUE(wait, current); | |
881 | struct async_icount old, new; | |
882 | ||
883 | if (arg & (TIOCM_DSR | TIOCM_RI | TIOCM_CD )) | |
884 | return -EINVAL; | |
885 | do { | |
886 | spin_lock_irq(&acm->read_lock); | |
887 | old = acm->oldcount; | |
888 | new = acm->iocount; | |
889 | acm->oldcount = new; | |
890 | spin_unlock_irq(&acm->read_lock); | |
891 | ||
892 | if ((arg & TIOCM_DSR) && | |
893 | old.dsr != new.dsr) | |
894 | break; | |
895 | if ((arg & TIOCM_CD) && | |
896 | old.dcd != new.dcd) | |
897 | break; | |
898 | if ((arg & TIOCM_RI) && | |
899 | old.rng != new.rng) | |
900 | break; | |
901 | ||
902 | add_wait_queue(&acm->wioctl, &wait); | |
903 | set_current_state(TASK_INTERRUPTIBLE); | |
904 | schedule(); | |
905 | remove_wait_queue(&acm->wioctl, &wait); | |
906 | if (acm->disconnected) { | |
907 | if (arg & TIOCM_CD) | |
908 | break; | |
909 | else | |
910 | rv = -ENODEV; | |
911 | } else { | |
912 | if (signal_pending(current)) | |
913 | rv = -ERESTARTSYS; | |
914 | } | |
915 | } while (!rv); | |
916 | ||
917 | ||
918 | ||
919 | return rv; | |
920 | } | |
921 | ||
797ef137 ON |
922 | static int get_serial_usage(struct acm *acm, |
923 | struct serial_icounter_struct __user *count) | |
924 | { | |
925 | struct serial_icounter_struct icount; | |
926 | int rv = 0; | |
927 | ||
928 | memset(&icount, 0, sizeof(icount)); | |
929 | icount.dsr = acm->iocount.dsr; | |
930 | icount.rng = acm->iocount.rng; | |
931 | icount.dcd = acm->iocount.dcd; | |
932 | icount.frame = acm->iocount.frame; | |
933 | icount.overrun = acm->iocount.overrun; | |
934 | icount.parity = acm->iocount.parity; | |
935 | icount.brk = acm->iocount.brk; | |
936 | ||
937 | if (copy_to_user(count, &icount, sizeof(icount)) > 0) | |
938 | rv = -EFAULT; | |
939 | ||
940 | return rv; | |
941 | } | |
942 | ||
6caa76b7 | 943 | static int acm_tty_ioctl(struct tty_struct *tty, |
6e47e069 | 944 | unsigned int cmd, unsigned long arg) |
1da177e4 | 945 | { |
18c75720 ON |
946 | struct acm *acm = tty->driver_data; |
947 | int rv = -ENOIOCTLCMD; | |
948 | ||
949 | switch (cmd) { | |
950 | case TIOCGSERIAL: /* gets serial port data */ | |
951 | rv = get_serial_info(acm, (struct serial_struct __user *) arg); | |
ba2d8ce9 DW |
952 | break; |
953 | case TIOCSSERIAL: | |
954 | rv = set_serial_info(acm, (struct serial_struct __user *) arg); | |
18c75720 | 955 | break; |
5a6a62bd | 956 | case TIOCMIWAIT: |
8fdbeb26 ON |
957 | rv = usb_autopm_get_interface(acm->control); |
958 | if (rv < 0) { | |
959 | rv = -EIO; | |
960 | break; | |
961 | } | |
5a6a62bd | 962 | rv = wait_serial_change(acm, arg); |
8fdbeb26 | 963 | usb_autopm_put_interface(acm->control); |
5a6a62bd | 964 | break; |
797ef137 ON |
965 | case TIOCGICOUNT: |
966 | rv = get_serial_usage(acm, (struct serial_icounter_struct __user *) arg); | |
967 | break; | |
18c75720 ON |
968 | } |
969 | ||
970 | return rv; | |
1da177e4 LT |
971 | } |
972 | ||
6e47e069 AC |
973 | static void acm_tty_set_termios(struct tty_struct *tty, |
974 | struct ktermios *termios_old) | |
1da177e4 LT |
975 | { |
976 | struct acm *acm = tty->driver_data; | |
adc8d746 | 977 | struct ktermios *termios = &tty->termios; |
1da177e4 LT |
978 | struct usb_cdc_line_coding newline; |
979 | int newctrl = acm->ctrlout; | |
980 | ||
9b80fee1 | 981 | newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty)); |
1da177e4 LT |
982 | newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; |
983 | newline.bParityType = termios->c_cflag & PARENB ? | |
6e47e069 AC |
984 | (termios->c_cflag & PARODD ? 1 : 2) + |
985 | (termios->c_cflag & CMSPAR ? 2 : 0) : 0; | |
301a29da NB |
986 | switch (termios->c_cflag & CSIZE) { |
987 | case CS5: | |
988 | newline.bDataBits = 5; | |
989 | break; | |
990 | case CS6: | |
991 | newline.bDataBits = 6; | |
992 | break; | |
993 | case CS7: | |
994 | newline.bDataBits = 7; | |
995 | break; | |
996 | case CS8: | |
997 | default: | |
998 | newline.bDataBits = 8; | |
999 | break; | |
1000 | } | |
6e47e069 | 1001 | /* FIXME: Needs to clear unsupported bits in the termios */ |
1da177e4 LT |
1002 | acm->clocal = ((termios->c_cflag & CLOCAL) != 0); |
1003 | ||
4473d054 | 1004 | if (C_BAUD(tty) == B0) { |
1da177e4 LT |
1005 | newline.dwDTERate = acm->line.dwDTERate; |
1006 | newctrl &= ~ACM_CTRL_DTR; | |
4473d054 | 1007 | } else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) { |
6e47e069 | 1008 | newctrl |= ACM_CTRL_DTR; |
4473d054 | 1009 | } |
1da177e4 LT |
1010 | |
1011 | if (newctrl != acm->ctrlout) | |
1012 | acm_set_control(acm, acm->ctrlout = newctrl); | |
1013 | ||
1014 | if (memcmp(&acm->line, &newline, sizeof newline)) { | |
1015 | memcpy(&acm->line, &newline, sizeof newline); | |
a5cc7ef9 JH |
1016 | dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n", |
1017 | __func__, | |
1018 | le32_to_cpu(newline.dwDTERate), | |
1da177e4 LT |
1019 | newline.bCharFormat, newline.bParityType, |
1020 | newline.bDataBits); | |
1021 | acm_set_line(acm, &acm->line); | |
1022 | } | |
1023 | } | |
1024 | ||
7fb57a01 | 1025 | static const struct tty_port_operations acm_port_ops = { |
0943d8ea | 1026 | .dtr_rts = acm_port_dtr_rts, |
7fb57a01 HS |
1027 | .shutdown = acm_port_shutdown, |
1028 | .activate = acm_port_activate, | |
1029 | .destruct = acm_port_destruct, | |
1030 | }; | |
1031 | ||
1da177e4 LT |
1032 | /* |
1033 | * USB probe and disconnect routines. | |
1034 | */ | |
1035 | ||
830f4021 | 1036 | /* Little helpers: write/read buffers free */ |
884b600f ON |
1037 | static void acm_write_buffers_free(struct acm *acm) |
1038 | { | |
1039 | int i; | |
1040 | struct acm_wb *wb; | |
a496c64f | 1041 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); |
884b600f | 1042 | |
6e47e069 | 1043 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) |
997ea58e | 1044 | usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah); |
884b600f ON |
1045 | } |
1046 | ||
830f4021 ON |
1047 | static void acm_read_buffers_free(struct acm *acm) |
1048 | { | |
1049 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); | |
dab54c9f | 1050 | int i; |
830f4021 | 1051 | |
dab54c9f | 1052 | for (i = 0; i < acm->rx_buflimit; i++) |
997ea58e | 1053 | usb_free_coherent(usb_dev, acm->readsize, |
088c64f8 | 1054 | acm->read_buffers[i].base, acm->read_buffers[i].dma); |
830f4021 ON |
1055 | } |
1056 | ||
884b600f ON |
1057 | /* Little helper: write buffers allocate */ |
1058 | static int acm_write_buffers_alloc(struct acm *acm) | |
1059 | { | |
1060 | int i; | |
1061 | struct acm_wb *wb; | |
1062 | ||
86478944 | 1063 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { |
997ea58e | 1064 | wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL, |
884b600f ON |
1065 | &wb->dmah); |
1066 | if (!wb->buf) { | |
1067 | while (i != 0) { | |
1068 | --i; | |
1069 | --wb; | |
997ea58e | 1070 | usb_free_coherent(acm->dev, acm->writesize, |
884b600f ON |
1071 | wb->buf, wb->dmah); |
1072 | } | |
1073 | return -ENOMEM; | |
1074 | } | |
1075 | } | |
1076 | return 0; | |
1077 | } | |
1078 | ||
10077d4a AC |
1079 | static int acm_probe(struct usb_interface *intf, |
1080 | const struct usb_device_id *id) | |
1da177e4 LT |
1081 | { |
1082 | struct usb_cdc_union_desc *union_header = NULL; | |
c4cabd28 | 1083 | struct usb_cdc_country_functional_desc *cfd = NULL; |
c6dbf554 | 1084 | unsigned char *buffer = intf->altsetting->extra; |
1da177e4 LT |
1085 | int buflen = intf->altsetting->extralen; |
1086 | struct usb_interface *control_interface; | |
1087 | struct usb_interface *data_interface; | |
a2bfb4a3 ON |
1088 | struct usb_endpoint_descriptor *epctrl = NULL; |
1089 | struct usb_endpoint_descriptor *epread = NULL; | |
1090 | struct usb_endpoint_descriptor *epwrite = NULL; | |
1da177e4 LT |
1091 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
1092 | struct acm *acm; | |
1093 | int minor; | |
6e47e069 | 1094 | int ctrlsize, readsize; |
1da177e4 LT |
1095 | u8 *buf; |
1096 | u8 ac_management_function = 0; | |
1097 | u8 call_management_function = 0; | |
1098 | int call_interface_num = -1; | |
fd5054c1 | 1099 | int data_interface_num = -1; |
1da177e4 | 1100 | unsigned long quirks; |
86478944 | 1101 | int num_rx_buf; |
61a87adf | 1102 | int i; |
7e860a6e | 1103 | unsigned int elength = 0; |
a2bfb4a3 | 1104 | int combined_interfaces = 0; |
c93d8195 AK |
1105 | struct device *tty_dev; |
1106 | int rv = -ENOMEM; | |
1da177e4 | 1107 | |
86478944 | 1108 | /* normal quirks */ |
1da177e4 | 1109 | quirks = (unsigned long)id->driver_info; |
16142655 DT |
1110 | |
1111 | if (quirks == IGNORE_DEVICE) | |
1112 | return -ENODEV; | |
1113 | ||
86478944 ON |
1114 | num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; |
1115 | ||
1116 | /* handle quirks deadly to normal probing*/ | |
1da177e4 LT |
1117 | if (quirks == NO_UNION_NORMAL) { |
1118 | data_interface = usb_ifnum_to_if(usb_dev, 1); | |
1119 | control_interface = usb_ifnum_to_if(usb_dev, 0); | |
1120 | goto skip_normal_probe; | |
1121 | } | |
6e47e069 | 1122 | |
1da177e4 LT |
1123 | /* normal probing*/ |
1124 | if (!buffer) { | |
9908a32e | 1125 | dev_err(&intf->dev, "Weird descriptor references\n"); |
1da177e4 LT |
1126 | return -EINVAL; |
1127 | } | |
1128 | ||
1129 | if (!buflen) { | |
577045c0 TG |
1130 | if (intf->cur_altsetting->endpoint && |
1131 | intf->cur_altsetting->endpoint->extralen && | |
6e47e069 AC |
1132 | intf->cur_altsetting->endpoint->extra) { |
1133 | dev_dbg(&intf->dev, | |
1134 | "Seeking extra descriptors on endpoint\n"); | |
1da177e4 LT |
1135 | buflen = intf->cur_altsetting->endpoint->extralen; |
1136 | buffer = intf->cur_altsetting->endpoint->extra; | |
1137 | } else { | |
9908a32e GKH |
1138 | dev_err(&intf->dev, |
1139 | "Zero length descriptor references\n"); | |
1da177e4 LT |
1140 | return -EINVAL; |
1141 | } | |
1142 | } | |
1143 | ||
1144 | while (buflen > 0) { | |
6e47e069 | 1145 | if (buffer[1] != USB_DT_CS_INTERFACE) { |
9908a32e | 1146 | dev_err(&intf->dev, "skipping garbage\n"); |
1da177e4 LT |
1147 | goto next_desc; |
1148 | } | |
7e860a6e | 1149 | elength = buffer[0]; |
1da177e4 | 1150 | |
6e47e069 AC |
1151 | switch (buffer[2]) { |
1152 | case USB_CDC_UNION_TYPE: /* we've found it */ | |
7e860a6e ON |
1153 | if (elength < sizeof(struct usb_cdc_union_desc)) |
1154 | goto next_desc; | |
6e47e069 AC |
1155 | if (union_header) { |
1156 | dev_err(&intf->dev, "More than one " | |
1157 | "union descriptor, skipping ...\n"); | |
1158 | goto next_desc; | |
1da177e4 | 1159 | } |
6e47e069 AC |
1160 | union_header = (struct usb_cdc_union_desc *)buffer; |
1161 | break; | |
1162 | case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/ | |
7e860a6e ON |
1163 | if (elength < sizeof(struct usb_cdc_country_functional_desc)) |
1164 | goto next_desc; | |
6e47e069 AC |
1165 | cfd = (struct usb_cdc_country_functional_desc *)buffer; |
1166 | break; | |
1167 | case USB_CDC_HEADER_TYPE: /* maybe check version */ | |
1168 | break; /* for now we ignore it */ | |
1169 | case USB_CDC_ACM_TYPE: | |
7e860a6e ON |
1170 | if (elength < 4) |
1171 | goto next_desc; | |
6e47e069 AC |
1172 | ac_management_function = buffer[3]; |
1173 | break; | |
1174 | case USB_CDC_CALL_MANAGEMENT_TYPE: | |
7e860a6e ON |
1175 | if (elength < 5) |
1176 | goto next_desc; | |
6e47e069 AC |
1177 | call_management_function = buffer[3]; |
1178 | call_interface_num = buffer[4]; | |
6e47e069 AC |
1179 | break; |
1180 | default: | |
7e860a6e ON |
1181 | /* |
1182 | * there are LOTS more CDC descriptors that | |
6e47e069 AC |
1183 | * could legitimately be found here. |
1184 | */ | |
1185 | dev_dbg(&intf->dev, "Ignoring descriptor: " | |
7e860a6e ON |
1186 | "type %02x, length %ud\n", |
1187 | buffer[2], elength); | |
6e47e069 AC |
1188 | break; |
1189 | } | |
1da177e4 | 1190 | next_desc: |
7e860a6e ON |
1191 | buflen -= elength; |
1192 | buffer += elength; | |
1da177e4 LT |
1193 | } |
1194 | ||
1195 | if (!union_header) { | |
1196 | if (call_interface_num > 0) { | |
6e47e069 | 1197 | dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n"); |
fd5054c1 ES |
1198 | /* quirks for Droids MuIn LCD */ |
1199 | if (quirks & NO_DATA_INTERFACE) | |
1200 | data_interface = usb_ifnum_to_if(usb_dev, 0); | |
1201 | else | |
1202 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num)); | |
1da177e4 LT |
1203 | control_interface = intf; |
1204 | } else { | |
a2bfb4a3 ON |
1205 | if (intf->cur_altsetting->desc.bNumEndpoints != 3) { |
1206 | dev_dbg(&intf->dev,"No union descriptor, giving up\n"); | |
1207 | return -ENODEV; | |
1208 | } else { | |
1209 | dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n"); | |
1210 | combined_interfaces = 1; | |
1211 | control_interface = data_interface = intf; | |
1212 | goto look_for_collapsed_interface; | |
1213 | } | |
1da177e4 LT |
1214 | } |
1215 | } else { | |
1216 | control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); | |
1217 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0)); | |
403dff4e GKH |
1218 | } |
1219 | ||
1220 | if (!control_interface || !data_interface) { | |
1221 | dev_dbg(&intf->dev, "no interfaces\n"); | |
1222 | return -ENODEV; | |
1da177e4 | 1223 | } |
6e47e069 | 1224 | |
1da177e4 | 1225 | if (data_interface_num != call_interface_num) |
6e47e069 | 1226 | dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n"); |
1da177e4 | 1227 | |
a2bfb4a3 ON |
1228 | if (control_interface == data_interface) { |
1229 | /* some broken devices designed for windows work this way */ | |
1230 | dev_warn(&intf->dev,"Control and data interfaces are not separated!\n"); | |
1231 | combined_interfaces = 1; | |
1232 | /* a popular other OS doesn't use it */ | |
1233 | quirks |= NO_CAP_LINE; | |
1234 | if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) { | |
1235 | dev_err(&intf->dev, "This needs exactly 3 endpoints\n"); | |
1236 | return -EINVAL; | |
1237 | } | |
1238 | look_for_collapsed_interface: | |
1239 | for (i = 0; i < 3; i++) { | |
1240 | struct usb_endpoint_descriptor *ep; | |
1241 | ep = &data_interface->cur_altsetting->endpoint[i].desc; | |
1242 | ||
1243 | if (usb_endpoint_is_int_in(ep)) | |
1244 | epctrl = ep; | |
1245 | else if (usb_endpoint_is_bulk_out(ep)) | |
1246 | epwrite = ep; | |
1247 | else if (usb_endpoint_is_bulk_in(ep)) | |
1248 | epread = ep; | |
1249 | else | |
1250 | return -EINVAL; | |
1251 | } | |
1252 | if (!epctrl || !epread || !epwrite) | |
1253 | return -ENODEV; | |
1254 | else | |
1255 | goto made_compressed_probe; | |
1256 | } | |
1257 | ||
1da177e4 LT |
1258 | skip_normal_probe: |
1259 | ||
1260 | /*workaround for switched interfaces */ | |
6e47e069 AC |
1261 | if (data_interface->cur_altsetting->desc.bInterfaceClass |
1262 | != CDC_DATA_INTERFACE_TYPE) { | |
1263 | if (control_interface->cur_altsetting->desc.bInterfaceClass | |
1264 | == CDC_DATA_INTERFACE_TYPE) { | |
1da177e4 | 1265 | struct usb_interface *t; |
6e47e069 AC |
1266 | dev_dbg(&intf->dev, |
1267 | "Your device has switched interfaces.\n"); | |
1da177e4 LT |
1268 | t = control_interface; |
1269 | control_interface = data_interface; | |
1270 | data_interface = t; | |
1271 | } else { | |
1272 | return -EINVAL; | |
1273 | } | |
1274 | } | |
74da5d68 AS |
1275 | |
1276 | /* Accept probe requests only for the control interface */ | |
a2bfb4a3 | 1277 | if (!combined_interfaces && intf != control_interface) |
74da5d68 | 1278 | return -ENODEV; |
6e47e069 | 1279 | |
a2bfb4a3 ON |
1280 | if (!combined_interfaces && usb_interface_claimed(data_interface)) { |
1281 | /* valid in this context */ | |
6e47e069 | 1282 | dev_dbg(&intf->dev, "The data interface isn't available\n"); |
1da177e4 LT |
1283 | return -EBUSY; |
1284 | } | |
1285 | ||
1286 | ||
99f347ca SS |
1287 | if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 || |
1288 | control_interface->cur_altsetting->desc.bNumEndpoints == 0) | |
1da177e4 LT |
1289 | return -EINVAL; |
1290 | ||
1291 | epctrl = &control_interface->cur_altsetting->endpoint[0].desc; | |
1292 | epread = &data_interface->cur_altsetting->endpoint[0].desc; | |
1293 | epwrite = &data_interface->cur_altsetting->endpoint[1].desc; | |
1294 | ||
1295 | ||
1296 | /* workaround for switched endpoints */ | |
45aea704 | 1297 | if (!usb_endpoint_dir_in(epread)) { |
1da177e4 LT |
1298 | /* descriptors are swapped */ |
1299 | struct usb_endpoint_descriptor *t; | |
6e47e069 AC |
1300 | dev_dbg(&intf->dev, |
1301 | "The data interface has switched endpoints\n"); | |
1da177e4 LT |
1302 | t = epread; |
1303 | epread = epwrite; | |
1304 | epwrite = t; | |
1305 | } | |
a2bfb4a3 | 1306 | made_compressed_probe: |
a5cc7ef9 | 1307 | dev_dbg(&intf->dev, "interfaces are valid\n"); |
1da177e4 | 1308 | |
6e47e069 | 1309 | acm = kzalloc(sizeof(struct acm), GFP_KERNEL); |
17136d49 | 1310 | if (acm == NULL) |
1da177e4 | 1311 | goto alloc_fail; |
1da177e4 | 1312 | |
7fb57a01 HS |
1313 | minor = acm_alloc_minor(acm); |
1314 | if (minor == ACM_TTY_MINORS) { | |
1315 | dev_err(&intf->dev, "no more free acm devices\n"); | |
1316 | kfree(acm); | |
1317 | return -ENODEV; | |
1318 | } | |
1319 | ||
29cc8897 KM |
1320 | ctrlsize = usb_endpoint_maxp(epctrl); |
1321 | readsize = usb_endpoint_maxp(epread) * | |
6e47e069 | 1322 | (quirks == SINGLE_RX_URB ? 1 : 2); |
a2bfb4a3 | 1323 | acm->combined_interfaces = combined_interfaces; |
29cc8897 | 1324 | acm->writesize = usb_endpoint_maxp(epwrite) * 20; |
1da177e4 LT |
1325 | acm->control = control_interface; |
1326 | acm->data = data_interface; | |
1327 | acm->minor = minor; | |
1328 | acm->dev = usb_dev; | |
1329 | acm->ctrl_caps = ac_management_function; | |
a2bfb4a3 ON |
1330 | if (quirks & NO_CAP_LINE) |
1331 | acm->ctrl_caps &= ~USB_CDC_CAP_LINE; | |
1da177e4 LT |
1332 | acm->ctrlsize = ctrlsize; |
1333 | acm->readsize = readsize; | |
86478944 | 1334 | acm->rx_buflimit = num_rx_buf; |
c4028958 | 1335 | INIT_WORK(&acm->work, acm_softint); |
5a6a62bd | 1336 | init_waitqueue_head(&acm->wioctl); |
884b600f | 1337 | spin_lock_init(&acm->write_lock); |
61a87adf | 1338 | spin_lock_init(&acm->read_lock); |
1365baf7 | 1339 | mutex_init(&acm->mutex); |
61a87adf | 1340 | acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); |
cf7fdd57 ON |
1341 | acm->is_int_ep = usb_endpoint_xfer_int(epread); |
1342 | if (acm->is_int_ep) | |
1343 | acm->bInterval = epread->bInterval; | |
739e0285 AC |
1344 | tty_port_init(&acm->port); |
1345 | acm->port.ops = &acm_port_ops; | |
140cb81a | 1346 | init_usb_anchor(&acm->delayed); |
2a8cdfde | 1347 | acm->quirks = quirks; |
1da177e4 | 1348 | |
997ea58e | 1349 | buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); |
17136d49 | 1350 | if (!buf) |
1da177e4 | 1351 | goto alloc_fail2; |
1da177e4 LT |
1352 | acm->ctrl_buffer = buf; |
1353 | ||
17136d49 | 1354 | if (acm_write_buffers_alloc(acm) < 0) |
1da177e4 | 1355 | goto alloc_fail4; |
1da177e4 LT |
1356 | |
1357 | acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); | |
17136d49 | 1358 | if (!acm->ctrlurb) |
1da177e4 | 1359 | goto alloc_fail5; |
17136d49 | 1360 | |
86478944 | 1361 | for (i = 0; i < num_rx_buf; i++) { |
088c64f8 JH |
1362 | struct acm_rb *rb = &(acm->read_buffers[i]); |
1363 | struct urb *urb; | |
61a87adf | 1364 | |
74f5e1ba JH |
1365 | rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, |
1366 | &rb->dma); | |
17136d49 | 1367 | if (!rb->base) |
74f5e1ba | 1368 | goto alloc_fail6; |
088c64f8 JH |
1369 | rb->index = i; |
1370 | rb->instance = acm; | |
74f5e1ba | 1371 | |
088c64f8 | 1372 | urb = usb_alloc_urb(0, GFP_KERNEL); |
17136d49 | 1373 | if (!urb) |
c2572b78 | 1374 | goto alloc_fail6; |
17136d49 | 1375 | |
088c64f8 JH |
1376 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1377 | urb->transfer_dma = rb->dma; | |
1378 | if (acm->is_int_ep) { | |
1379 | usb_fill_int_urb(urb, acm->dev, | |
1380 | acm->rx_endpoint, | |
1381 | rb->base, | |
1382 | acm->readsize, | |
1383 | acm_read_bulk_callback, rb, | |
1384 | acm->bInterval); | |
1385 | } else { | |
1386 | usb_fill_bulk_urb(urb, acm->dev, | |
1387 | acm->rx_endpoint, | |
1388 | rb->base, | |
1389 | acm->readsize, | |
1390 | acm_read_bulk_callback, rb); | |
1391 | } | |
61a87adf | 1392 | |
088c64f8 JH |
1393 | acm->read_urbs[i] = urb; |
1394 | __set_bit(i, &acm->read_urbs_free); | |
61a87adf | 1395 | } |
6e47e069 | 1396 | for (i = 0; i < ACM_NW; i++) { |
e4cf3aa8 DE |
1397 | struct acm_wb *snd = &(acm->wb[i]); |
1398 | ||
6e47e069 | 1399 | snd->urb = usb_alloc_urb(0, GFP_KERNEL); |
17136d49 | 1400 | if (snd->urb == NULL) |
74f5e1ba | 1401 | goto alloc_fail7; |
e4cf3aa8 | 1402 | |
5186ffee AL |
1403 | if (usb_endpoint_xfer_int(epwrite)) |
1404 | usb_fill_int_urb(snd->urb, usb_dev, | |
c5211187 | 1405 | usb_sndintpipe(usb_dev, epwrite->bEndpointAddress), |
5186ffee AL |
1406 | NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval); |
1407 | else | |
1408 | usb_fill_bulk_urb(snd->urb, usb_dev, | |
1409 | usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), | |
1410 | NULL, acm->writesize, acm_write_bulk, snd); | |
e4cf3aa8 DE |
1411 | snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1412 | snd->instance = acm; | |
1da177e4 LT |
1413 | } |
1414 | ||
6e47e069 | 1415 | usb_set_intfdata(intf, acm); |
c4cabd28 ON |
1416 | |
1417 | i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); | |
1418 | if (i < 0) | |
74f5e1ba | 1419 | goto alloc_fail7; |
c4cabd28 ON |
1420 | |
1421 | if (cfd) { /* export the country data */ | |
1422 | acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); | |
1423 | if (!acm->country_codes) | |
1424 | goto skip_countries; | |
1425 | acm->country_code_size = cfd->bLength - 4; | |
6e47e069 AC |
1426 | memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, |
1427 | cfd->bLength - 4); | |
c4cabd28 ON |
1428 | acm->country_rel_date = cfd->iCountryCodeRelDate; |
1429 | ||
1430 | i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); | |
1431 | if (i < 0) { | |
1432 | kfree(acm->country_codes); | |
e7c8e860 JL |
1433 | acm->country_codes = NULL; |
1434 | acm->country_code_size = 0; | |
c4cabd28 ON |
1435 | goto skip_countries; |
1436 | } | |
1437 | ||
6e47e069 AC |
1438 | i = device_create_file(&intf->dev, |
1439 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1440 | if (i < 0) { |
c2572b78 | 1441 | device_remove_file(&intf->dev, &dev_attr_wCountryCodes); |
c4cabd28 | 1442 | kfree(acm->country_codes); |
e7c8e860 JL |
1443 | acm->country_codes = NULL; |
1444 | acm->country_code_size = 0; | |
c4cabd28 ON |
1445 | goto skip_countries; |
1446 | } | |
1447 | } | |
1448 | ||
1449 | skip_countries: | |
6e47e069 | 1450 | usb_fill_int_urb(acm->ctrlurb, usb_dev, |
a2bfb4a3 ON |
1451 | usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), |
1452 | acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, | |
1453 | /* works around buggy devices */ | |
d102e78f | 1454 | epctrl->bInterval ? epctrl->bInterval : 16); |
1da177e4 LT |
1455 | acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1456 | acm->ctrlurb->transfer_dma = acm->ctrl_dma; | |
1457 | ||
1da177e4 LT |
1458 | dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); |
1459 | ||
1da177e4 LT |
1460 | acm->line.dwDTERate = cpu_to_le32(9600); |
1461 | acm->line.bDataBits = 8; | |
1462 | acm_set_line(acm, &acm->line); | |
1463 | ||
1464 | usb_driver_claim_interface(&acm_driver, data_interface, acm); | |
672c4e18 | 1465 | usb_set_intfdata(data_interface, acm); |
1da177e4 | 1466 | |
83ef344a | 1467 | usb_get_intf(control_interface); |
c93d8195 | 1468 | tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor, |
734cc178 | 1469 | &control_interface->dev); |
c93d8195 AK |
1470 | if (IS_ERR(tty_dev)) { |
1471 | rv = PTR_ERR(tty_dev); | |
1472 | goto alloc_fail8; | |
1473 | } | |
1da177e4 | 1474 | |
c4cabd28 | 1475 | return 0; |
c93d8195 AK |
1476 | alloc_fail8: |
1477 | if (acm->country_codes) { | |
1478 | device_remove_file(&acm->control->dev, | |
1479 | &dev_attr_wCountryCodes); | |
1480 | device_remove_file(&acm->control->dev, | |
1481 | &dev_attr_iCountryCodeRelDate); | |
d908f847 | 1482 | kfree(acm->country_codes); |
c93d8195 AK |
1483 | } |
1484 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); | |
74f5e1ba | 1485 | alloc_fail7: |
c93d8195 | 1486 | usb_set_intfdata(intf, NULL); |
e4cf3aa8 DE |
1487 | for (i = 0; i < ACM_NW; i++) |
1488 | usb_free_urb(acm->wb[i].urb); | |
c2572b78 | 1489 | alloc_fail6: |
86478944 | 1490 | for (i = 0; i < num_rx_buf; i++) |
088c64f8 | 1491 | usb_free_urb(acm->read_urbs[i]); |
74f5e1ba | 1492 | acm_read_buffers_free(acm); |
1da177e4 LT |
1493 | usb_free_urb(acm->ctrlurb); |
1494 | alloc_fail5: | |
884b600f | 1495 | acm_write_buffers_free(acm); |
1da177e4 | 1496 | alloc_fail4: |
997ea58e | 1497 | usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
1da177e4 | 1498 | alloc_fail2: |
7fb57a01 | 1499 | acm_release_minor(acm); |
1da177e4 LT |
1500 | kfree(acm); |
1501 | alloc_fail: | |
c93d8195 | 1502 | return rv; |
1da177e4 LT |
1503 | } |
1504 | ||
1365baf7 ON |
1505 | static void stop_data_traffic(struct acm *acm) |
1506 | { | |
1507 | int i; | |
a5cc7ef9 JH |
1508 | |
1509 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
1365baf7 | 1510 | |
1365baf7 | 1511 | usb_kill_urb(acm->ctrlurb); |
6e47e069 | 1512 | for (i = 0; i < ACM_NW; i++) |
e4cf3aa8 | 1513 | usb_kill_urb(acm->wb[i].urb); |
1365baf7 | 1514 | for (i = 0; i < acm->rx_buflimit; i++) |
088c64f8 | 1515 | usb_kill_urb(acm->read_urbs[i]); |
1365baf7 ON |
1516 | |
1517 | cancel_work_sync(&acm->work); | |
1518 | } | |
1519 | ||
1da177e4 LT |
1520 | static void acm_disconnect(struct usb_interface *intf) |
1521 | { | |
c4cabd28 | 1522 | struct acm *acm = usb_get_intfdata(intf); |
1da177e4 | 1523 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
10077d4a | 1524 | struct tty_struct *tty; |
7fb57a01 HS |
1525 | int i; |
1526 | ||
1527 | dev_dbg(&intf->dev, "%s\n", __func__); | |
1da177e4 | 1528 | |
672c4e18 DB |
1529 | /* sibling interface is already cleaning up */ |
1530 | if (!acm) | |
86067eea | 1531 | return; |
672c4e18 | 1532 | |
7fb57a01 HS |
1533 | mutex_lock(&acm->mutex); |
1534 | acm->disconnected = true; | |
6e47e069 | 1535 | if (acm->country_codes) { |
74da5d68 AS |
1536 | device_remove_file(&acm->control->dev, |
1537 | &dev_attr_wCountryCodes); | |
1538 | device_remove_file(&acm->control->dev, | |
1539 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1540 | } |
5a6a62bd | 1541 | wake_up_all(&acm->wioctl); |
74da5d68 | 1542 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); |
86067eea ON |
1543 | usb_set_intfdata(acm->control, NULL); |
1544 | usb_set_intfdata(acm->data, NULL); | |
7fb57a01 HS |
1545 | mutex_unlock(&acm->mutex); |
1546 | ||
1547 | tty = tty_port_tty_get(&acm->port); | |
1548 | if (tty) { | |
1549 | tty_vhangup(tty); | |
1550 | tty_kref_put(tty); | |
1551 | } | |
1da177e4 | 1552 | |
1365baf7 | 1553 | stop_data_traffic(acm); |
1da177e4 | 1554 | |
cb25505f JH |
1555 | tty_unregister_device(acm_tty_driver, acm->minor); |
1556 | ||
7fb57a01 HS |
1557 | usb_free_urb(acm->ctrlurb); |
1558 | for (i = 0; i < ACM_NW; i++) | |
1559 | usb_free_urb(acm->wb[i].urb); | |
1560 | for (i = 0; i < acm->rx_buflimit; i++) | |
1561 | usb_free_urb(acm->read_urbs[i]); | |
884b600f | 1562 | acm_write_buffers_free(acm); |
7fb57a01 | 1563 | usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
830f4021 | 1564 | acm_read_buffers_free(acm); |
1da177e4 | 1565 | |
a2bfb4a3 ON |
1566 | if (!acm->combined_interfaces) |
1567 | usb_driver_release_interface(&acm_driver, intf == acm->control ? | |
830f4021 | 1568 | acm->data : acm->control); |
1da177e4 | 1569 | |
7fb57a01 | 1570 | tty_port_put(&acm->port); |
1da177e4 LT |
1571 | } |
1572 | ||
35758589 | 1573 | #ifdef CONFIG_PM |
1365baf7 ON |
1574 | static int acm_suspend(struct usb_interface *intf, pm_message_t message) |
1575 | { | |
1576 | struct acm *acm = usb_get_intfdata(intf); | |
11ea859d ON |
1577 | int cnt; |
1578 | ||
bbf0cb3e | 1579 | spin_lock_irq(&acm->write_lock); |
5b1b0b81 | 1580 | if (PMSG_IS_AUTO(message)) { |
5a345c20 | 1581 | if (acm->transmitting) { |
bbf0cb3e | 1582 | spin_unlock_irq(&acm->write_lock); |
11ea859d | 1583 | return -EBUSY; |
5a345c20 | 1584 | } |
11ea859d | 1585 | } |
11ea859d | 1586 | cnt = acm->susp_count++; |
bbf0cb3e | 1587 | spin_unlock_irq(&acm->write_lock); |
1365baf7 | 1588 | |
11ea859d | 1589 | if (cnt) |
1365baf7 | 1590 | return 0; |
1365baf7 | 1591 | |
ed797074 | 1592 | stop_data_traffic(acm); |
1365baf7 | 1593 | |
1365baf7 ON |
1594 | return 0; |
1595 | } | |
1596 | ||
1597 | static int acm_resume(struct usb_interface *intf) | |
1598 | { | |
1599 | struct acm *acm = usb_get_intfdata(intf); | |
140cb81a | 1600 | struct urb *urb; |
1365baf7 ON |
1601 | int rv = 0; |
1602 | ||
bbf0cb3e | 1603 | spin_lock_irq(&acm->write_lock); |
11ea859d | 1604 | |
e144ed28 JH |
1605 | if (--acm->susp_count) |
1606 | goto out; | |
1365baf7 | 1607 | |
7fb57a01 | 1608 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) { |
e144ed28 | 1609 | rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC); |
97d35f95 | 1610 | |
140cb81a JH |
1611 | for (;;) { |
1612 | urb = usb_get_from_anchor(&acm->delayed); | |
1613 | if (!urb) | |
1614 | break; | |
1615 | ||
1616 | acm_start_wb(acm, urb->context); | |
97d35f95 ON |
1617 | } |
1618 | ||
1619 | /* | |
1620 | * delayed error checking because we must | |
1621 | * do the write path at all cost | |
1622 | */ | |
1365baf7 | 1623 | if (rv < 0) |
e144ed28 | 1624 | goto out; |
1365baf7 | 1625 | |
e144ed28 | 1626 | rv = acm_submit_read_urbs(acm, GFP_ATOMIC); |
1365baf7 | 1627 | } |
e144ed28 | 1628 | out: |
bbf0cb3e | 1629 | spin_unlock_irq(&acm->write_lock); |
1365baf7 | 1630 | |
1365baf7 ON |
1631 | return rv; |
1632 | } | |
35758589 | 1633 | |
a91b0c50 FL |
1634 | static int acm_reset_resume(struct usb_interface *intf) |
1635 | { | |
1636 | struct acm *acm = usb_get_intfdata(intf); | |
a91b0c50 | 1637 | |
aa27a094 JS |
1638 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) |
1639 | tty_port_tty_hangup(&acm->port, false); | |
7fb57a01 | 1640 | |
a91b0c50 FL |
1641 | return acm_resume(intf); |
1642 | } | |
1643 | ||
35758589 | 1644 | #endif /* CONFIG_PM */ |
c1479a92 AT |
1645 | |
1646 | #define NOKIA_PCSUITE_ACM_INFO(x) \ | |
1647 | USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \ | |
1648 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1649 | USB_CDC_ACM_PROTO_VENDOR) | |
1650 | ||
4035e456 TG |
1651 | #define SAMSUNG_PCSUITE_ACM_INFO(x) \ |
1652 | USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \ | |
1653 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1654 | USB_CDC_ACM_PROTO_VENDOR) | |
1655 | ||
1da177e4 LT |
1656 | /* |
1657 | * USB driver structure. | |
1658 | */ | |
1659 | ||
6ef4852b | 1660 | static const struct usb_device_id acm_ids[] = { |
1da177e4 | 1661 | /* quirky and broken devices */ |
b20b1618 BG |
1662 | { USB_DEVICE(0x076d, 0x0006), /* Denso Cradle CU-321 */ |
1663 | .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ | |
3b59d16c DC |
1664 | { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */ |
1665 | .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ | |
1da177e4 LT |
1666 | { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ |
1667 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1668 | }, | |
b0e2a705 AA |
1669 | { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ |
1670 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1671 | }, | |
0f9c7b4a AL |
1672 | { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ |
1673 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1674 | }, | |
8753e65e MO |
1675 | { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */ |
1676 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1677 | }, | |
91a9c921 CM |
1678 | { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */ |
1679 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1680 | }, | |
7abcf20b AC |
1681 | { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */ |
1682 | .driver_info = SINGLE_RX_URB, | |
1683 | }, | |
86478944 ON |
1684 | { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */ |
1685 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1686 | }, | |
3dd2ae81 ON |
1687 | { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ |
1688 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1689 | }, | |
9be8456c ON |
1690 | { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ |
1691 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1692 | }, | |
6149ed5e IM |
1693 | { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ |
1694 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1695 | }, | |
c8fd2c37 ES |
1696 | { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */ |
1697 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1698 | }, | |
c89c60e9 AC |
1699 | { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */ |
1700 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1701 | }, | |
cab98a0a XK |
1702 | { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */ |
1703 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1704 | }, | |
2a8cdfde JH |
1705 | { USB_DEVICE(0x20df, 0x0001), /* Simtec Electronics Entropy Key */ |
1706 | .driver_info = QUIRK_CONTROL_LINE_STATE, }, | |
cf84a691 | 1707 | { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */ |
155df65a DT |
1708 | { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */ |
1709 | }, | |
6abff5dc KH |
1710 | /* Motorola H24 HSPA module: */ |
1711 | { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */ | |
895d240d MU |
1712 | { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */ |
1713 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1714 | }, | |
1715 | { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */ | |
1716 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1717 | }, | |
1718 | { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */ | |
1719 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1720 | }, | |
1721 | { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */ | |
1722 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1723 | }, | |
1724 | { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */ | |
1725 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1726 | }, | |
1727 | { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */ | |
1728 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1729 | }, | |
1730 | { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */ | |
1731 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1732 | }, | |
6abff5dc | 1733 | |
c332b4e1 AR |
1734 | { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */ |
1735 | .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on | |
1736 | data interface instead of | |
1737 | communications interface. | |
1738 | Maybe we should define a new | |
1739 | quirk for this. */ | |
1740 | }, | |
e7d491a1 JCR |
1741 | { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */ |
1742 | .driver_info = NO_UNION_NORMAL, | |
1743 | }, | |
036915a7 DL |
1744 | { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */ |
1745 | .driver_info = NO_UNION_NORMAL, | |
1746 | }, | |
1f17c502 KK |
1747 | { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */ |
1748 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1749 | }, | |
c3baa19b RN |
1750 | { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */ |
1751 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1752 | }, | |
9be8456c | 1753 | |
c1479a92 AT |
1754 | /* Nokia S60 phones expose two ACM channels. The first is |
1755 | * a modem and is picked up by the standard AT-command | |
1756 | * information below. The second is 'vendor-specific' but | |
1757 | * is treated as a serial device at the S60 end, so we want | |
1758 | * to expose it on Linux too. */ | |
1759 | { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */ | |
1760 | { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */ | |
1761 | { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */ | |
1762 | { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */ | |
1763 | { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */ | |
1764 | { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */ | |
1765 | { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */ | |
1766 | { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */ | |
1767 | { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */ | |
1768 | { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */ | |
1769 | { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */ | |
1770 | { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */ | |
1771 | { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */ | |
1772 | { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */ | |
1773 | { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */ | |
1774 | { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */ | |
1775 | { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */ | |
1776 | { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */ | |
1777 | { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */ | |
1778 | { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */ | |
1779 | { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */ | |
1780 | { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */ | |
1781 | { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */ | |
1782 | { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */ | |
1783 | { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */ | |
1784 | { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */ | |
1785 | { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */ | |
1786 | { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */ | |
1787 | { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */ | |
1788 | { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */ | |
1789 | { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */ | |
1790 | { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */ | |
1791 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1792 | { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */ | |
1793 | { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */ | |
1794 | { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */ | |
1795 | { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */ | |
1796 | { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */ | |
1797 | { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */ | |
1798 | { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */ | |
1799 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1800 | { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */ | |
1801 | { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */ | |
83a4eae9 | 1802 | { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */ |
4035e456 TG |
1803 | { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */ |
1804 | { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */ | |
1805 | { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */ | |
1806 | { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */ | |
1807 | { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */ | |
1808 | { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */ | |
1809 | { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */ | |
1810 | { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */ | |
1811 | { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */ | |
1812 | { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */ | |
721d92fc | 1813 | { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */ |
4061fde2 TG |
1814 | { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */ |
1815 | { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */ | |
4035e456 | 1816 | { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */ |
c1479a92 | 1817 | |
65e52f41 DP |
1818 | /* Support for Owen devices */ |
1819 | { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */ | |
1820 | ||
c1479a92 AT |
1821 | /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */ |
1822 | ||
fd5054c1 ES |
1823 | /* Support for Droids MuIn LCD */ |
1824 | { USB_DEVICE(0x04d8, 0x000b), | |
1825 | .driver_info = NO_DATA_INTERFACE, | |
1826 | }, | |
1827 | ||
16142655 DT |
1828 | #if IS_ENABLED(CONFIG_INPUT_IMS_PCU) |
1829 | { USB_DEVICE(0x04d8, 0x0082), /* Application mode */ | |
1830 | .driver_info = IGNORE_DEVICE, | |
1831 | }, | |
1832 | { USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */ | |
1833 | .driver_info = IGNORE_DEVICE, | |
1834 | }, | |
1835 | #endif | |
1836 | ||
5b239f0a PC |
1837 | /* control interfaces without any protocol set */ |
1838 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1839 | USB_CDC_PROTO_NONE) }, | |
1840 | ||
1da177e4 LT |
1841 | /* control interfaces with various AT-command sets */ |
1842 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1843 | USB_CDC_ACM_PROTO_AT_V25TER) }, | |
1844 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1845 | USB_CDC_ACM_PROTO_AT_PCCA101) }, | |
1846 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1847 | USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) }, | |
1848 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1849 | USB_CDC_ACM_PROTO_AT_GSM) }, | |
1850 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
6e47e069 | 1851 | USB_CDC_ACM_PROTO_AT_3G) }, |
1da177e4 LT |
1852 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
1853 | USB_CDC_ACM_PROTO_AT_CDMA) }, | |
1854 | ||
1da177e4 LT |
1855 | { } |
1856 | }; | |
1857 | ||
6e47e069 | 1858 | MODULE_DEVICE_TABLE(usb, acm_ids); |
1da177e4 LT |
1859 | |
1860 | static struct usb_driver acm_driver = { | |
1da177e4 LT |
1861 | .name = "cdc_acm", |
1862 | .probe = acm_probe, | |
1863 | .disconnect = acm_disconnect, | |
35758589 | 1864 | #ifdef CONFIG_PM |
1365baf7 ON |
1865 | .suspend = acm_suspend, |
1866 | .resume = acm_resume, | |
a91b0c50 | 1867 | .reset_resume = acm_reset_resume, |
35758589 | 1868 | #endif |
1da177e4 | 1869 | .id_table = acm_ids, |
35758589 | 1870 | #ifdef CONFIG_PM |
1365baf7 | 1871 | .supports_autosuspend = 1, |
35758589 | 1872 | #endif |
e1f12eb6 | 1873 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
1874 | }; |
1875 | ||
1876 | /* | |
1877 | * TTY driver structures. | |
1878 | */ | |
1879 | ||
b68e31d0 | 1880 | static const struct tty_operations acm_ops = { |
7fb57a01 | 1881 | .install = acm_tty_install, |
1da177e4 LT |
1882 | .open = acm_tty_open, |
1883 | .close = acm_tty_close, | |
7fb57a01 | 1884 | .cleanup = acm_tty_cleanup, |
10077d4a | 1885 | .hangup = acm_tty_hangup, |
1da177e4 LT |
1886 | .write = acm_tty_write, |
1887 | .write_room = acm_tty_write_room, | |
1888 | .ioctl = acm_tty_ioctl, | |
1889 | .throttle = acm_tty_throttle, | |
1890 | .unthrottle = acm_tty_unthrottle, | |
1891 | .chars_in_buffer = acm_tty_chars_in_buffer, | |
1892 | .break_ctl = acm_tty_break_ctl, | |
1893 | .set_termios = acm_tty_set_termios, | |
1894 | .tiocmget = acm_tty_tiocmget, | |
1895 | .tiocmset = acm_tty_tiocmset, | |
1896 | }; | |
1897 | ||
1898 | /* | |
1899 | * Init / exit. | |
1900 | */ | |
1901 | ||
1902 | static int __init acm_init(void) | |
1903 | { | |
1904 | int retval; | |
1905 | acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS); | |
1906 | if (!acm_tty_driver) | |
1907 | return -ENOMEM; | |
1da177e4 LT |
1908 | acm_tty_driver->driver_name = "acm", |
1909 | acm_tty_driver->name = "ttyACM", | |
1da177e4 LT |
1910 | acm_tty_driver->major = ACM_TTY_MAJOR, |
1911 | acm_tty_driver->minor_start = 0, | |
1912 | acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, | |
1913 | acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, | |
331b8319 | 1914 | acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 | 1915 | acm_tty_driver->init_termios = tty_std_termios; |
6e47e069 AC |
1916 | acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | |
1917 | HUPCL | CLOCAL; | |
1da177e4 LT |
1918 | tty_set_operations(acm_tty_driver, &acm_ops); |
1919 | ||
1920 | retval = tty_register_driver(acm_tty_driver); | |
1921 | if (retval) { | |
1922 | put_tty_driver(acm_tty_driver); | |
1923 | return retval; | |
1924 | } | |
1925 | ||
1926 | retval = usb_register(&acm_driver); | |
1927 | if (retval) { | |
1928 | tty_unregister_driver(acm_tty_driver); | |
1929 | put_tty_driver(acm_tty_driver); | |
1930 | return retval; | |
1931 | } | |
1932 | ||
a2c7b935 | 1933 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
1934 | |
1935 | return 0; | |
1936 | } | |
1937 | ||
1938 | static void __exit acm_exit(void) | |
1939 | { | |
1940 | usb_deregister(&acm_driver); | |
1941 | tty_unregister_driver(acm_tty_driver); | |
1942 | put_tty_driver(acm_tty_driver); | |
1943 | } | |
1944 | ||
1945 | module_init(acm_init); | |
1946 | module_exit(acm_exit); | |
1947 | ||
6e47e069 AC |
1948 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1949 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 1950 | MODULE_LICENSE("GPL"); |
e766aeb8 | 1951 | MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR); |