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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> | |
174cd4b1 | 35 | #include <linux/sched/signal.h> |
1da177e4 LT |
36 | #include <linux/errno.h> |
37 | #include <linux/init.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/tty.h> | |
7af25b4b | 40 | #include <linux/serial.h> |
1da177e4 LT |
41 | #include <linux/tty_driver.h> |
42 | #include <linux/tty_flip.h> | |
43 | #include <linux/module.h> | |
4186ecf8 | 44 | #include <linux/mutex.h> |
10077d4a | 45 | #include <linux/uaccess.h> |
1da177e4 | 46 | #include <linux/usb.h> |
a8c28f23 | 47 | #include <linux/usb/cdc.h> |
1da177e4 LT |
48 | #include <asm/byteorder.h> |
49 | #include <asm/unaligned.h> | |
6cb4f4df | 50 | #include <linux/idr.h> |
61a87adf | 51 | #include <linux/list.h> |
1da177e4 LT |
52 | |
53 | #include "cdc-acm.h" | |
54 | ||
e5fbab51 | 55 | |
088c64f8 | 56 | #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold" |
1da177e4 LT |
57 | #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters" |
58 | ||
59 | static struct usb_driver acm_driver; | |
60 | static struct tty_driver *acm_tty_driver; | |
1da177e4 | 61 | |
6cb4f4df JH |
62 | static DEFINE_IDR(acm_minors); |
63 | static DEFINE_MUTEX(acm_minors_lock); | |
1da177e4 | 64 | |
24cb4502 JP |
65 | static void acm_tty_set_termios(struct tty_struct *tty, |
66 | struct ktermios *termios_old); | |
67 | ||
7fb57a01 | 68 | /* |
6cb4f4df | 69 | * acm_minors accessors |
7fb57a01 | 70 | */ |
1da177e4 | 71 | |
7fb57a01 | 72 | /* |
6cb4f4df | 73 | * Look up an ACM structure by minor. If found and not disconnected, increment |
7fb57a01 HS |
74 | * its refcount and return it with its mutex held. |
75 | */ | |
6cb4f4df | 76 | static struct acm *acm_get_by_minor(unsigned int minor) |
7fb57a01 HS |
77 | { |
78 | struct acm *acm; | |
79 | ||
6cb4f4df JH |
80 | mutex_lock(&acm_minors_lock); |
81 | acm = idr_find(&acm_minors, minor); | |
7fb57a01 HS |
82 | if (acm) { |
83 | mutex_lock(&acm->mutex); | |
84 | if (acm->disconnected) { | |
85 | mutex_unlock(&acm->mutex); | |
86 | acm = NULL; | |
87 | } else { | |
88 | tty_port_get(&acm->port); | |
89 | mutex_unlock(&acm->mutex); | |
90 | } | |
91 | } | |
6cb4f4df | 92 | mutex_unlock(&acm_minors_lock); |
7fb57a01 HS |
93 | return acm; |
94 | } | |
95 | ||
96 | /* | |
97 | * Try to find an available minor number and if found, associate it with 'acm'. | |
98 | */ | |
99 | static int acm_alloc_minor(struct acm *acm) | |
100 | { | |
101 | int minor; | |
102 | ||
6cb4f4df JH |
103 | mutex_lock(&acm_minors_lock); |
104 | minor = idr_alloc(&acm_minors, acm, 0, ACM_TTY_MINORS, GFP_KERNEL); | |
105 | mutex_unlock(&acm_minors_lock); | |
7fb57a01 HS |
106 | |
107 | return minor; | |
108 | } | |
109 | ||
110 | /* Release the minor number associated with 'acm'. */ | |
111 | static void acm_release_minor(struct acm *acm) | |
112 | { | |
6cb4f4df JH |
113 | mutex_lock(&acm_minors_lock); |
114 | idr_remove(&acm_minors, acm->minor); | |
115 | mutex_unlock(&acm_minors_lock); | |
7fb57a01 | 116 | } |
739e0285 | 117 | |
1da177e4 LT |
118 | /* |
119 | * Functions for ACM control messages. | |
120 | */ | |
121 | ||
6e47e069 AC |
122 | static int acm_ctrl_msg(struct acm *acm, int request, int value, |
123 | void *buf, int len) | |
1da177e4 | 124 | { |
bae3f4c5 JH |
125 | int retval; |
126 | ||
127 | retval = usb_autopm_get_interface(acm->control); | |
128 | if (retval) | |
129 | return retval; | |
130 | ||
131 | retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), | |
1da177e4 LT |
132 | request, USB_RT_ACM, value, |
133 | acm->control->altsetting[0].desc.bInterfaceNumber, | |
134 | buf, len, 5000); | |
bae3f4c5 | 135 | |
a5cc7ef9 | 136 | dev_dbg(&acm->control->dev, |
90744af8 LM |
137 | "%s - rq 0x%02x, val %#x, len %#x, result %d\n", |
138 | __func__, request, value, len, retval); | |
bae3f4c5 JH |
139 | |
140 | usb_autopm_put_interface(acm->control); | |
141 | ||
1da177e4 LT |
142 | return retval < 0 ? retval : 0; |
143 | } | |
144 | ||
145 | /* devices aren't required to support these requests. | |
146 | * the cdc acm descriptor tells whether they do... | |
147 | */ | |
2a8cdfde JH |
148 | static inline int acm_set_control(struct acm *acm, int control) |
149 | { | |
150 | if (acm->quirks & QUIRK_CONTROL_LINE_STATE) | |
151 | return -EOPNOTSUPP; | |
152 | ||
153 | return acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, | |
154 | control, NULL, 0); | |
155 | } | |
156 | ||
1da177e4 LT |
157 | #define acm_set_line(acm, line) \ |
158 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line)) | |
159 | #define acm_send_break(acm, ms) \ | |
160 | acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0) | |
161 | ||
ba8c931d LM |
162 | static void acm_kill_urbs(struct acm *acm) |
163 | { | |
164 | int i; | |
165 | ||
166 | usb_kill_urb(acm->ctrlurb); | |
167 | for (i = 0; i < ACM_NW; i++) | |
168 | usb_kill_urb(acm->wb[i].urb); | |
169 | for (i = 0; i < acm->rx_buflimit; i++) | |
170 | usb_kill_urb(acm->read_urbs[i]); | |
171 | } | |
172 | ||
884b600f ON |
173 | /* |
174 | * Write buffer management. | |
175 | * All of these assume proper locks taken by the caller. | |
176 | */ | |
177 | ||
178 | static int acm_wb_alloc(struct acm *acm) | |
179 | { | |
180 | int i, wbn; | |
181 | struct acm_wb *wb; | |
182 | ||
e4cf3aa8 | 183 | wbn = 0; |
884b600f ON |
184 | i = 0; |
185 | for (;;) { | |
186 | wb = &acm->wb[wbn]; | |
187 | if (!wb->use) { | |
188 | wb->use = 1; | |
189 | return wbn; | |
190 | } | |
86478944 ON |
191 | wbn = (wbn + 1) % ACM_NW; |
192 | if (++i >= ACM_NW) | |
884b600f ON |
193 | return -1; |
194 | } | |
195 | } | |
196 | ||
884b600f ON |
197 | static int acm_wb_is_avail(struct acm *acm) |
198 | { | |
199 | int i, n; | |
e5fbab51 | 200 | unsigned long flags; |
884b600f | 201 | |
86478944 | 202 | n = ACM_NW; |
e5fbab51 | 203 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 | 204 | for (i = 0; i < ACM_NW; i++) |
86478944 | 205 | n -= acm->wb[i].use; |
e5fbab51 | 206 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
207 | return n; |
208 | } | |
209 | ||
884b600f | 210 | /* |
ad0b65ef | 211 | * Finish write. Caller must hold acm->write_lock |
884b600f | 212 | */ |
e4cf3aa8 | 213 | static void acm_write_done(struct acm *acm, struct acm_wb *wb) |
884b600f | 214 | { |
e4cf3aa8 | 215 | wb->use = 0; |
11ea859d | 216 | acm->transmitting--; |
97d35f95 | 217 | usb_autopm_put_interface_async(acm->control); |
884b600f ON |
218 | } |
219 | ||
220 | /* | |
221 | * Poke write. | |
11ea859d ON |
222 | * |
223 | * the caller is responsible for locking | |
884b600f | 224 | */ |
11ea859d ON |
225 | |
226 | static int acm_start_wb(struct acm *acm, struct acm_wb *wb) | |
227 | { | |
228 | int rc; | |
229 | ||
230 | acm->transmitting++; | |
231 | ||
232 | wb->urb->transfer_buffer = wb->buf; | |
233 | wb->urb->transfer_dma = wb->dmah; | |
234 | wb->urb->transfer_buffer_length = wb->len; | |
235 | wb->urb->dev = acm->dev; | |
236 | ||
6e47e069 AC |
237 | rc = usb_submit_urb(wb->urb, GFP_ATOMIC); |
238 | if (rc < 0) { | |
a5cc7ef9 JH |
239 | dev_err(&acm->data->dev, |
240 | "%s - usb_submit_urb(write bulk) failed: %d\n", | |
241 | __func__, rc); | |
11ea859d ON |
242 | acm_write_done(acm, wb); |
243 | } | |
244 | return rc; | |
245 | } | |
246 | ||
c4cabd28 ON |
247 | /* |
248 | * attributes exported through sysfs | |
249 | */ | |
250 | static ssize_t show_caps | |
251 | (struct device *dev, struct device_attribute *attr, char *buf) | |
252 | { | |
253 | struct usb_interface *intf = to_usb_interface(dev); | |
254 | struct acm *acm = usb_get_intfdata(intf); | |
255 | ||
256 | return sprintf(buf, "%d", acm->ctrl_caps); | |
257 | } | |
258 | static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL); | |
259 | ||
260 | static ssize_t show_country_codes | |
261 | (struct device *dev, struct device_attribute *attr, char *buf) | |
262 | { | |
263 | struct usb_interface *intf = to_usb_interface(dev); | |
264 | struct acm *acm = usb_get_intfdata(intf); | |
265 | ||
266 | memcpy(buf, acm->country_codes, acm->country_code_size); | |
267 | return acm->country_code_size; | |
268 | } | |
269 | ||
270 | static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL); | |
271 | ||
272 | static ssize_t show_country_rel_date | |
273 | (struct device *dev, struct device_attribute *attr, char *buf) | |
274 | { | |
275 | struct usb_interface *intf = to_usb_interface(dev); | |
276 | struct acm *acm = usb_get_intfdata(intf); | |
277 | ||
278 | return sprintf(buf, "%d", acm->country_rel_date); | |
279 | } | |
884b600f | 280 | |
c4cabd28 | 281 | static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL); |
1da177e4 LT |
282 | /* |
283 | * Interrupt handlers for various ACM device responses | |
284 | */ | |
285 | ||
286 | /* control interface reports status changes with "interrupt" transfers */ | |
7d12e780 | 287 | static void acm_ctrl_irq(struct urb *urb) |
1da177e4 LT |
288 | { |
289 | struct acm *acm = urb->context; | |
290 | struct usb_cdc_notification *dr = urb->transfer_buffer; | |
291 | unsigned char *data; | |
292 | int newctrl; | |
5a6a62bd | 293 | int difference; |
185d4058 GKH |
294 | int retval; |
295 | int status = urb->status; | |
1da177e4 | 296 | |
185d4058 | 297 | switch (status) { |
1da177e4 LT |
298 | case 0: |
299 | /* success */ | |
300 | break; | |
301 | case -ECONNRESET: | |
302 | case -ENOENT: | |
303 | case -ESHUTDOWN: | |
304 | /* this urb is terminated, clean up */ | |
a5cc7ef9 | 305 | dev_dbg(&acm->control->dev, |
90744af8 LM |
306 | "%s - urb shutting down with status: %d\n", |
307 | __func__, status); | |
1da177e4 LT |
308 | return; |
309 | default: | |
a5cc7ef9 | 310 | dev_dbg(&acm->control->dev, |
90744af8 LM |
311 | "%s - nonzero urb status received: %d\n", |
312 | __func__, status); | |
1da177e4 LT |
313 | goto exit; |
314 | } | |
315 | ||
7e7797e7 JH |
316 | usb_mark_last_busy(acm->dev); |
317 | ||
1da177e4 LT |
318 | data = (unsigned char *)(dr + 1); |
319 | switch (dr->bNotificationType) { | |
6e47e069 | 320 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: |
90744af8 LM |
321 | dev_dbg(&acm->control->dev, |
322 | "%s - network connection: %d\n", __func__, dr->wValue); | |
6e47e069 | 323 | break; |
1da177e4 | 324 | |
6e47e069 | 325 | case USB_CDC_NOTIFY_SERIAL_STATE: |
6e47e069 | 326 | newctrl = get_unaligned_le16(data); |
1da177e4 | 327 | |
aa27a094 | 328 | if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { |
90744af8 LM |
329 | dev_dbg(&acm->control->dev, |
330 | "%s - calling hangup\n", __func__); | |
aa27a094 | 331 | tty_port_tty_hangup(&acm->port, false); |
6e47e069 | 332 | } |
1da177e4 | 333 | |
5a6a62bd ON |
334 | difference = acm->ctrlin ^ newctrl; |
335 | spin_lock(&acm->read_lock); | |
6e47e069 | 336 | acm->ctrlin = newctrl; |
5a6a62bd ON |
337 | acm->oldcount = acm->iocount; |
338 | ||
339 | if (difference & ACM_CTRL_DSR) | |
340 | acm->iocount.dsr++; | |
341 | if (difference & ACM_CTRL_BRK) | |
342 | acm->iocount.brk++; | |
343 | if (difference & ACM_CTRL_RI) | |
344 | acm->iocount.rng++; | |
345 | if (difference & ACM_CTRL_DCD) | |
346 | acm->iocount.dcd++; | |
347 | if (difference & ACM_CTRL_FRAMING) | |
348 | acm->iocount.frame++; | |
349 | if (difference & ACM_CTRL_PARITY) | |
350 | acm->iocount.parity++; | |
351 | if (difference & ACM_CTRL_OVERRUN) | |
352 | acm->iocount.overrun++; | |
353 | spin_unlock(&acm->read_lock); | |
354 | ||
355 | if (difference) | |
356 | wake_up_all(&acm->wioctl); | |
1da177e4 | 357 | |
5a6a62bd | 358 | break; |
1da177e4 | 359 | |
6e47e069 | 360 | default: |
a5cc7ef9 JH |
361 | dev_dbg(&acm->control->dev, |
362 | "%s - unknown notification %d received: index %d " | |
363 | "len %d data0 %d data1 %d\n", | |
364 | __func__, | |
6e47e069 AC |
365 | dr->bNotificationType, dr->wIndex, |
366 | dr->wLength, data[0], data[1]); | |
367 | break; | |
1da177e4 LT |
368 | } |
369 | exit: | |
6e47e069 | 370 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
6c8074e9 | 371 | if (retval && retval != -EPERM) |
90744af8 LM |
372 | dev_err(&acm->control->dev, |
373 | "%s - usb_submit_urb failed: %d\n", __func__, retval); | |
1da177e4 LT |
374 | } |
375 | ||
088c64f8 | 376 | static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) |
1da177e4 | 377 | { |
088c64f8 | 378 | int res; |
185d4058 | 379 | |
088c64f8 JH |
380 | if (!test_and_clear_bit(index, &acm->read_urbs_free)) |
381 | return 0; | |
1da177e4 | 382 | |
088c64f8 JH |
383 | res = usb_submit_urb(acm->read_urbs[index], mem_flags); |
384 | if (res) { | |
385 | if (res != -EPERM) { | |
386 | dev_err(&acm->data->dev, | |
90744af8 LM |
387 | "urb %d failed submission with %d\n", |
388 | index, res); | |
088c64f8 JH |
389 | } |
390 | set_bit(index, &acm->read_urbs_free); | |
391 | return res; | |
46e75075 ON |
392 | } else { |
393 | dev_vdbg(&acm->data->dev, "submitted urb %d\n", index); | |
11ea859d | 394 | } |
1da177e4 | 395 | |
088c64f8 JH |
396 | return 0; |
397 | } | |
1da177e4 | 398 | |
088c64f8 JH |
399 | static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags) |
400 | { | |
401 | int res; | |
402 | int i; | |
61a87adf | 403 | |
088c64f8 JH |
404 | for (i = 0; i < acm->rx_buflimit; ++i) { |
405 | res = acm_submit_read_urb(acm, i, mem_flags); | |
406 | if (res) | |
407 | return res; | |
86478944 | 408 | } |
088c64f8 JH |
409 | |
410 | return 0; | |
1da177e4 LT |
411 | } |
412 | ||
088c64f8 | 413 | static void acm_process_read_urb(struct acm *acm, struct urb *urb) |
1da177e4 | 414 | { |
088c64f8 | 415 | if (!urb->actual_length) |
ca79b7b4 | 416 | return; |
61a87adf | 417 | |
05c7cd39 JS |
418 | tty_insert_flip_string(&acm->port, urb->transfer_buffer, |
419 | urb->actual_length); | |
2e124b4a | 420 | tty_flip_buffer_push(&acm->port); |
088c64f8 | 421 | } |
10077d4a | 422 | |
088c64f8 JH |
423 | static void acm_read_bulk_callback(struct urb *urb) |
424 | { | |
425 | struct acm_rb *rb = urb->context; | |
426 | struct acm *acm = rb->instance; | |
427 | unsigned long flags; | |
36e59e0d | 428 | int status = urb->status; |
61a87adf | 429 | |
efbe27b3 | 430 | dev_vdbg(&acm->data->dev, "got urb %d, len %d, status %d\n", |
90744af8 | 431 | rb->index, urb->actual_length, status); |
61a87adf | 432 | |
1aba579f LM |
433 | set_bit(rb->index, &acm->read_urbs_free); |
434 | ||
088c64f8 JH |
435 | if (!acm->dev) { |
436 | dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__); | |
437 | return; | |
438 | } | |
61a87adf | 439 | |
1aba579f LM |
440 | switch (status) { |
441 | case 0: | |
442 | usb_mark_last_busy(acm->dev); | |
443 | acm_process_read_urb(acm, urb); | |
444 | break; | |
445 | case -EPIPE: | |
446 | set_bit(EVENT_RX_STALL, &acm->flags); | |
447 | schedule_work(&acm->work); | |
448 | return; | |
449 | case -ENOENT: | |
450 | case -ECONNRESET: | |
451 | case -ESHUTDOWN: | |
452 | dev_dbg(&acm->data->dev, | |
453 | "%s - urb shutting down with status: %d\n", | |
454 | __func__, status); | |
455 | return; | |
456 | default: | |
457 | dev_dbg(&acm->data->dev, | |
458 | "%s - nonzero urb status received: %d\n", | |
459 | __func__, status); | |
460 | break; | |
61a87adf | 461 | } |
4a8ee505 | 462 | |
36e59e0d ON |
463 | /* |
464 | * Unthrottle may run on another CPU which needs to see events | |
465 | * in the same order. Submission has an implict barrier | |
466 | */ | |
467 | smp_mb__before_atomic(); | |
088c64f8 JH |
468 | |
469 | /* throttle device if requested by tty */ | |
11ea859d | 470 | spin_lock_irqsave(&acm->read_lock, flags); |
088c64f8 | 471 | acm->throttled = acm->throttle_req; |
bbf0cb3e | 472 | if (!acm->throttled) { |
088c64f8 JH |
473 | spin_unlock_irqrestore(&acm->read_lock, flags); |
474 | acm_submit_read_urb(acm, rb->index, GFP_ATOMIC); | |
475 | } else { | |
476 | spin_unlock_irqrestore(&acm->read_lock, flags); | |
477 | } | |
1da177e4 LT |
478 | } |
479 | ||
480 | /* data interface wrote those outgoing bytes */ | |
7d12e780 | 481 | static void acm_write_bulk(struct urb *urb) |
1da177e4 | 482 | { |
cdc97792 | 483 | struct acm_wb *wb = urb->context; |
e5fbab51 | 484 | struct acm *acm = wb->instance; |
ad0b65ef | 485 | unsigned long flags; |
4132cd02 | 486 | int status = urb->status; |
1da177e4 | 487 | |
4132cd02 | 488 | if (status || (urb->actual_length != urb->transfer_buffer_length)) |
efbe27b3 | 489 | dev_vdbg(&acm->data->dev, "wrote len %d/%d, status %d\n", |
e5fbab51 DB |
490 | urb->actual_length, |
491 | urb->transfer_buffer_length, | |
4132cd02 | 492 | status); |
1da177e4 | 493 | |
ad0b65ef | 494 | spin_lock_irqsave(&acm->write_lock, flags); |
e4cf3aa8 | 495 | acm_write_done(acm, wb); |
ad0b65ef | 496 | spin_unlock_irqrestore(&acm->write_lock, flags); |
1aba579f | 497 | set_bit(EVENT_TTY_WAKEUP, &acm->flags); |
99823f45 | 498 | schedule_work(&acm->work); |
1da177e4 LT |
499 | } |
500 | ||
c4028958 | 501 | static void acm_softint(struct work_struct *work) |
1da177e4 | 502 | { |
1aba579f | 503 | int i; |
c4028958 | 504 | struct acm *acm = container_of(work, struct acm, work); |
e5fbab51 | 505 | |
1aba579f LM |
506 | if (test_bit(EVENT_RX_STALL, &acm->flags)) { |
507 | if (!(usb_autopm_get_interface(acm->data))) { | |
508 | for (i = 0; i < acm->rx_buflimit; i++) | |
509 | usb_kill_urb(acm->read_urbs[i]); | |
510 | usb_clear_halt(acm->dev, acm->in); | |
511 | acm_submit_read_urbs(acm, GFP_KERNEL); | |
512 | usb_autopm_put_interface(acm->data); | |
513 | } | |
514 | clear_bit(EVENT_RX_STALL, &acm->flags); | |
515 | } | |
516 | ||
517 | if (test_bit(EVENT_TTY_WAKEUP, &acm->flags)) { | |
518 | tty_port_tty_wakeup(&acm->port); | |
519 | clear_bit(EVENT_TTY_WAKEUP, &acm->flags); | |
520 | } | |
1da177e4 LT |
521 | } |
522 | ||
523 | /* | |
524 | * TTY handlers | |
525 | */ | |
526 | ||
7fb57a01 | 527 | static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty) |
1da177e4 LT |
528 | { |
529 | struct acm *acm; | |
7fb57a01 | 530 | int retval; |
1da177e4 | 531 | |
6cb4f4df | 532 | acm = acm_get_by_minor(tty->index); |
7fb57a01 HS |
533 | if (!acm) |
534 | return -ENODEV; | |
a5cc7ef9 | 535 | |
f8a8c10f | 536 | retval = tty_standard_install(driver, tty); |
7fb57a01 HS |
537 | if (retval) |
538 | goto error_init_termios; | |
10077d4a | 539 | |
1da177e4 | 540 | tty->driver_data = acm; |
1da177e4 | 541 | |
7fb57a01 HS |
542 | return 0; |
543 | ||
544 | error_init_termios: | |
545 | tty_port_put(&acm->port); | |
546 | return retval; | |
547 | } | |
548 | ||
549 | static int acm_tty_open(struct tty_struct *tty, struct file *filp) | |
550 | { | |
551 | struct acm *acm = tty->driver_data; | |
552 | ||
7fb57a01 HS |
553 | return tty_port_open(&acm->port, tty, filp); |
554 | } | |
555 | ||
0943d8ea JH |
556 | static void acm_port_dtr_rts(struct tty_port *port, int raise) |
557 | { | |
558 | struct acm *acm = container_of(port, struct acm, port); | |
559 | int val; | |
560 | int res; | |
561 | ||
562 | if (raise) | |
563 | val = ACM_CTRL_DTR | ACM_CTRL_RTS; | |
564 | else | |
565 | val = 0; | |
566 | ||
567 | /* FIXME: add missing ctrlout locking throughout driver */ | |
568 | acm->ctrlout = val; | |
569 | ||
570 | res = acm_set_control(acm, val); | |
571 | if (res && (acm->ctrl_caps & USB_CDC_CAP_LINE)) | |
572 | dev_err(&acm->control->dev, "failed to set dtr/rts\n"); | |
573 | } | |
574 | ||
7fb57a01 HS |
575 | static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) |
576 | { | |
577 | struct acm *acm = container_of(port, struct acm, port); | |
578 | int retval = -ENODEV; | |
e4c36076 | 579 | int i; |
7fb57a01 | 580 | |
1365baf7 | 581 | mutex_lock(&acm->mutex); |
7fb57a01 HS |
582 | if (acm->disconnected) |
583 | goto disconnected; | |
584 | ||
585 | retval = usb_autopm_get_interface(acm->control); | |
586 | if (retval) | |
587 | goto error_get_interface; | |
588 | ||
589 | /* | |
590 | * FIXME: Why do we need this? Allocating 64K of physically contiguous | |
591 | * memory is really nasty... | |
592 | */ | |
593 | set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); | |
594 | acm->control->needs_remote_wakeup = 1; | |
1365baf7 | 595 | |
1da177e4 | 596 | acm->ctrlurb->dev = acm->dev; |
8727bf68 JH |
597 | retval = usb_submit_urb(acm->ctrlurb, GFP_KERNEL); |
598 | if (retval) { | |
a5cc7ef9 JH |
599 | dev_err(&acm->control->dev, |
600 | "%s - usb_submit_urb(ctrl irq) failed\n", __func__); | |
7fb57a01 | 601 | goto error_submit_urb; |
1da177e4 LT |
602 | } |
603 | ||
24cb4502 JP |
604 | acm_tty_set_termios(tty, NULL); |
605 | ||
6c4707f3 OM |
606 | /* |
607 | * Unthrottle device in case the TTY was closed while throttled. | |
608 | */ | |
609 | spin_lock_irq(&acm->read_lock); | |
610 | acm->throttled = 0; | |
611 | acm->throttle_req = 0; | |
612 | spin_unlock_irq(&acm->read_lock); | |
613 | ||
8727bf68 JH |
614 | retval = acm_submit_read_urbs(acm, GFP_KERNEL); |
615 | if (retval) | |
7fb57a01 | 616 | goto error_submit_read_urbs; |
2b626dc1 | 617 | |
703df329 JH |
618 | usb_autopm_put_interface(acm->control); |
619 | ||
1365baf7 | 620 | mutex_unlock(&acm->mutex); |
1da177e4 | 621 | |
7fb57a01 HS |
622 | return 0; |
623 | ||
624 | error_submit_read_urbs: | |
e4c36076 JH |
625 | for (i = 0; i < acm->rx_buflimit; i++) |
626 | usb_kill_urb(acm->read_urbs[i]); | |
7fb57a01 HS |
627 | usb_kill_urb(acm->ctrlurb); |
628 | error_submit_urb: | |
703df329 | 629 | usb_autopm_put_interface(acm->control); |
7fb57a01 HS |
630 | error_get_interface: |
631 | disconnected: | |
632 | mutex_unlock(&acm->mutex); | |
8727bf68 JH |
633 | |
634 | return usb_translate_errors(retval); | |
1da177e4 LT |
635 | } |
636 | ||
7fb57a01 | 637 | static void acm_port_destruct(struct tty_port *port) |
83ef344a | 638 | { |
7fb57a01 HS |
639 | struct acm *acm = container_of(port, struct acm, port); |
640 | ||
7fb57a01 | 641 | acm_release_minor(acm); |
83ef344a | 642 | usb_put_intf(acm->control); |
c4cabd28 | 643 | kfree(acm->country_codes); |
83ef344a | 644 | kfree(acm); |
645 | } | |
646 | ||
7fb57a01 | 647 | static void acm_port_shutdown(struct tty_port *port) |
10077d4a | 648 | { |
7fb57a01 | 649 | struct acm *acm = container_of(port, struct acm, port); |
140cb81a JH |
650 | struct urb *urb; |
651 | struct acm_wb *wb; | |
dab54c9f | 652 | |
b1d42efc JH |
653 | /* |
654 | * Need to grab write_lock to prevent race with resume, but no need to | |
655 | * hold it due to the tty-port initialised flag. | |
656 | */ | |
657 | spin_lock_irq(&acm->write_lock); | |
658 | spin_unlock_irq(&acm->write_lock); | |
659 | ||
660 | usb_autopm_get_interface_no_resume(acm->control); | |
661 | acm->control->needs_remote_wakeup = 0; | |
662 | usb_autopm_put_interface(acm->control); | |
663 | ||
89e54e44 JH |
664 | for (;;) { |
665 | urb = usb_get_from_anchor(&acm->delayed); | |
666 | if (!urb) | |
667 | break; | |
668 | wb = urb->context; | |
669 | wb->use = 0; | |
670 | usb_autopm_put_interface_async(acm->control); | |
10077d4a | 671 | } |
89e54e44 | 672 | |
ba8c931d | 673 | acm_kill_urbs(acm); |
7fb57a01 HS |
674 | } |
675 | ||
676 | static void acm_tty_cleanup(struct tty_struct *tty) | |
677 | { | |
678 | struct acm *acm = tty->driver_data; | |
ab57f861 | 679 | |
7fb57a01 | 680 | tty_port_put(&acm->port); |
10077d4a AC |
681 | } |
682 | ||
683 | static void acm_tty_hangup(struct tty_struct *tty) | |
684 | { | |
685 | struct acm *acm = tty->driver_data; | |
ab57f861 | 686 | |
10077d4a | 687 | tty_port_hangup(&acm->port); |
10077d4a AC |
688 | } |
689 | ||
1da177e4 LT |
690 | static void acm_tty_close(struct tty_struct *tty, struct file *filp) |
691 | { | |
692 | struct acm *acm = tty->driver_data; | |
ab57f861 | 693 | |
7fb57a01 | 694 | tty_port_close(&acm->port, tty, filp); |
1da177e4 LT |
695 | } |
696 | ||
6e47e069 AC |
697 | static int acm_tty_write(struct tty_struct *tty, |
698 | const unsigned char *buf, int count) | |
1da177e4 LT |
699 | { |
700 | struct acm *acm = tty->driver_data; | |
701 | int stat; | |
884b600f ON |
702 | unsigned long flags; |
703 | int wbn; | |
704 | struct acm_wb *wb; | |
705 | ||
1da177e4 LT |
706 | if (!count) |
707 | return 0; | |
708 | ||
efbe27b3 | 709 | dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count); |
a5cc7ef9 | 710 | |
884b600f | 711 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 AC |
712 | wbn = acm_wb_alloc(acm); |
713 | if (wbn < 0) { | |
884b600f | 714 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
715 | return 0; |
716 | } | |
717 | wb = &acm->wb[wbn]; | |
1da177e4 | 718 | |
71c2fb03 GKH |
719 | if (!acm->dev) { |
720 | wb->use = 0; | |
721 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
722 | return -ENODEV; | |
723 | } | |
724 | ||
884b600f | 725 | count = (count > acm->writesize) ? acm->writesize : count; |
efbe27b3 | 726 | dev_vdbg(&acm->data->dev, "writing %d bytes\n", count); |
884b600f ON |
727 | memcpy(wb->buf, buf, count); |
728 | wb->len = count; | |
71c2fb03 | 729 | |
183a4508 JH |
730 | stat = usb_autopm_get_interface_async(acm->control); |
731 | if (stat) { | |
732 | wb->use = 0; | |
733 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
734 | return stat; | |
735 | } | |
736 | ||
71c2fb03 | 737 | if (acm->susp_count) { |
a81cf979 ON |
738 | if (acm->putbuffer) { |
739 | /* now to preserve order */ | |
740 | usb_anchor_urb(acm->putbuffer->urb, &acm->delayed); | |
741 | acm->putbuffer = NULL; | |
742 | } | |
140cb81a | 743 | usb_anchor_urb(wb->urb, &acm->delayed); |
71c2fb03 | 744 | spin_unlock_irqrestore(&acm->write_lock, flags); |
140cb81a | 745 | return count; |
a81cf979 ON |
746 | } else { |
747 | if (acm->putbuffer) { | |
748 | /* at this point there is no good way to handle errors */ | |
749 | acm_start_wb(acm, acm->putbuffer); | |
750 | acm->putbuffer = NULL; | |
751 | } | |
71c2fb03 | 752 | } |
71c2fb03 GKH |
753 | |
754 | stat = acm_start_wb(acm, wb); | |
884b600f | 755 | spin_unlock_irqrestore(&acm->write_lock, flags); |
1da177e4 | 756 | |
6e47e069 | 757 | if (stat < 0) |
1da177e4 | 758 | return stat; |
1da177e4 LT |
759 | return count; |
760 | } | |
761 | ||
a81cf979 ON |
762 | static void acm_tty_flush_chars(struct tty_struct *tty) |
763 | { | |
764 | struct acm *acm = tty->driver_data; | |
765 | struct acm_wb *cur = acm->putbuffer; | |
766 | int err; | |
767 | unsigned long flags; | |
768 | ||
2a14759a ON |
769 | if (!cur) /* nothing to do */ |
770 | return; | |
771 | ||
a81cf979 ON |
772 | acm->putbuffer = NULL; |
773 | err = usb_autopm_get_interface_async(acm->control); | |
774 | spin_lock_irqsave(&acm->write_lock, flags); | |
775 | if (err < 0) { | |
776 | cur->use = 0; | |
2a14759a | 777 | acm->putbuffer = cur; |
a81cf979 ON |
778 | goto out; |
779 | } | |
780 | ||
781 | if (acm->susp_count) | |
782 | usb_anchor_urb(cur->urb, &acm->delayed); | |
783 | else | |
784 | acm_start_wb(acm, cur); | |
785 | out: | |
786 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
787 | return; | |
788 | } | |
789 | ||
790 | static int acm_tty_put_char(struct tty_struct *tty, unsigned char ch) | |
791 | { | |
792 | struct acm *acm = tty->driver_data; | |
793 | struct acm_wb *cur; | |
794 | int wbn; | |
795 | unsigned long flags; | |
796 | ||
797 | overflow: | |
798 | cur = acm->putbuffer; | |
799 | if (!cur) { | |
800 | spin_lock_irqsave(&acm->write_lock, flags); | |
801 | wbn = acm_wb_alloc(acm); | |
802 | if (wbn >= 0) { | |
803 | cur = &acm->wb[wbn]; | |
804 | acm->putbuffer = cur; | |
805 | } | |
806 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
807 | if (!cur) | |
808 | return 0; | |
809 | } | |
810 | ||
811 | if (cur->len == acm->writesize) { | |
812 | acm_tty_flush_chars(tty); | |
813 | goto overflow; | |
814 | } | |
815 | ||
816 | cur->buf[cur->len++] = ch; | |
817 | return 1; | |
818 | } | |
819 | ||
1da177e4 LT |
820 | static int acm_tty_write_room(struct tty_struct *tty) |
821 | { | |
822 | struct acm *acm = tty->driver_data; | |
884b600f ON |
823 | /* |
824 | * Do not let the line discipline to know that we have a reserve, | |
825 | * or it might get too enthusiastic. | |
826 | */ | |
934da463 | 827 | return acm_wb_is_avail(acm) ? acm->writesize : 0; |
1da177e4 LT |
828 | } |
829 | ||
830 | static int acm_tty_chars_in_buffer(struct tty_struct *tty) | |
831 | { | |
832 | struct acm *acm = tty->driver_data; | |
7fb57a01 HS |
833 | /* |
834 | * if the device was unplugged then any remaining characters fell out | |
835 | * of the connector ;) | |
836 | */ | |
837 | if (acm->disconnected) | |
23198fda | 838 | return 0; |
884b600f ON |
839 | /* |
840 | * This is inaccurate (overcounts), but it works. | |
841 | */ | |
86478944 | 842 | return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; |
1da177e4 LT |
843 | } |
844 | ||
845 | static void acm_tty_throttle(struct tty_struct *tty) | |
846 | { | |
847 | struct acm *acm = tty->driver_data; | |
088c64f8 | 848 | |
088c64f8 JH |
849 | spin_lock_irq(&acm->read_lock); |
850 | acm->throttle_req = 1; | |
851 | spin_unlock_irq(&acm->read_lock); | |
1da177e4 LT |
852 | } |
853 | ||
854 | static void acm_tty_unthrottle(struct tty_struct *tty) | |
855 | { | |
856 | struct acm *acm = tty->driver_data; | |
088c64f8 JH |
857 | unsigned int was_throttled; |
858 | ||
088c64f8 JH |
859 | spin_lock_irq(&acm->read_lock); |
860 | was_throttled = acm->throttled; | |
861 | acm->throttled = 0; | |
862 | acm->throttle_req = 0; | |
863 | spin_unlock_irq(&acm->read_lock); | |
864 | ||
865 | if (was_throttled) | |
866 | acm_submit_read_urbs(acm, GFP_KERNEL); | |
1da177e4 LT |
867 | } |
868 | ||
9e98966c | 869 | static int acm_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
870 | { |
871 | struct acm *acm = tty->driver_data; | |
9e98966c | 872 | int retval; |
7fb57a01 | 873 | |
9e98966c AC |
874 | retval = acm_send_break(acm, state ? 0xffff : 0); |
875 | if (retval < 0) | |
90744af8 LM |
876 | dev_dbg(&acm->control->dev, |
877 | "%s - send break failed\n", __func__); | |
9e98966c | 878 | return retval; |
1da177e4 LT |
879 | } |
880 | ||
60b33c13 | 881 | static int acm_tty_tiocmget(struct tty_struct *tty) |
1da177e4 LT |
882 | { |
883 | struct acm *acm = tty->driver_data; | |
884 | ||
1da177e4 LT |
885 | return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) | |
886 | (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) | | |
887 | (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) | | |
888 | (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) | | |
889 | (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) | | |
890 | TIOCM_CTS; | |
891 | } | |
892 | ||
20b9d177 | 893 | static int acm_tty_tiocmset(struct tty_struct *tty, |
1da177e4 LT |
894 | unsigned int set, unsigned int clear) |
895 | { | |
896 | struct acm *acm = tty->driver_data; | |
897 | unsigned int newctrl; | |
898 | ||
1da177e4 | 899 | newctrl = acm->ctrlout; |
6e47e069 AC |
900 | set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | |
901 | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
902 | clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | | |
903 | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
1da177e4 LT |
904 | |
905 | newctrl = (newctrl & ~clear) | set; | |
906 | ||
907 | if (acm->ctrlout == newctrl) | |
908 | return 0; | |
909 | return acm_set_control(acm, acm->ctrlout = newctrl); | |
910 | } | |
911 | ||
18c75720 ON |
912 | static int get_serial_info(struct acm *acm, struct serial_struct __user *info) |
913 | { | |
914 | struct serial_struct tmp; | |
915 | ||
18c75720 | 916 | memset(&tmp, 0, sizeof(tmp)); |
18c75720 ON |
917 | tmp.xmit_fifo_size = acm->writesize; |
918 | tmp.baud_base = le32_to_cpu(acm->line.dwDTERate); | |
ba2d8ce9 DW |
919 | tmp.close_delay = acm->port.close_delay / 10; |
920 | tmp.closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? | |
921 | ASYNC_CLOSING_WAIT_NONE : | |
922 | acm->port.closing_wait / 10; | |
18c75720 ON |
923 | |
924 | if (copy_to_user(info, &tmp, sizeof(tmp))) | |
925 | return -EFAULT; | |
926 | else | |
927 | return 0; | |
928 | } | |
929 | ||
ba2d8ce9 DW |
930 | static int set_serial_info(struct acm *acm, |
931 | struct serial_struct __user *newinfo) | |
932 | { | |
933 | struct serial_struct new_serial; | |
934 | unsigned int closing_wait, close_delay; | |
935 | int retval = 0; | |
936 | ||
937 | if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) | |
938 | return -EFAULT; | |
939 | ||
940 | close_delay = new_serial.close_delay * 10; | |
941 | closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ? | |
942 | ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10; | |
943 | ||
944 | mutex_lock(&acm->port.mutex); | |
945 | ||
946 | if (!capable(CAP_SYS_ADMIN)) { | |
947 | if ((close_delay != acm->port.close_delay) || | |
948 | (closing_wait != acm->port.closing_wait)) | |
949 | retval = -EPERM; | |
950 | else | |
951 | retval = -EOPNOTSUPP; | |
952 | } else { | |
953 | acm->port.close_delay = close_delay; | |
954 | acm->port.closing_wait = closing_wait; | |
955 | } | |
956 | ||
957 | mutex_unlock(&acm->port.mutex); | |
958 | return retval; | |
959 | } | |
960 | ||
5a6a62bd ON |
961 | static int wait_serial_change(struct acm *acm, unsigned long arg) |
962 | { | |
963 | int rv = 0; | |
964 | DECLARE_WAITQUEUE(wait, current); | |
965 | struct async_icount old, new; | |
966 | ||
5a6a62bd ON |
967 | do { |
968 | spin_lock_irq(&acm->read_lock); | |
969 | old = acm->oldcount; | |
970 | new = acm->iocount; | |
971 | acm->oldcount = new; | |
972 | spin_unlock_irq(&acm->read_lock); | |
973 | ||
974 | if ((arg & TIOCM_DSR) && | |
975 | old.dsr != new.dsr) | |
976 | break; | |
977 | if ((arg & TIOCM_CD) && | |
978 | old.dcd != new.dcd) | |
979 | break; | |
980 | if ((arg & TIOCM_RI) && | |
981 | old.rng != new.rng) | |
982 | break; | |
983 | ||
984 | add_wait_queue(&acm->wioctl, &wait); | |
985 | set_current_state(TASK_INTERRUPTIBLE); | |
986 | schedule(); | |
987 | remove_wait_queue(&acm->wioctl, &wait); | |
988 | if (acm->disconnected) { | |
989 | if (arg & TIOCM_CD) | |
990 | break; | |
991 | else | |
992 | rv = -ENODEV; | |
993 | } else { | |
994 | if (signal_pending(current)) | |
995 | rv = -ERESTARTSYS; | |
996 | } | |
997 | } while (!rv); | |
998 | ||
999 | ||
1000 | ||
1001 | return rv; | |
1002 | } | |
1003 | ||
bb2d387c JH |
1004 | static int acm_tty_get_icount(struct tty_struct *tty, |
1005 | struct serial_icounter_struct *icount) | |
797ef137 | 1006 | { |
bb2d387c | 1007 | struct acm *acm = tty->driver_data; |
797ef137 | 1008 | |
bb2d387c JH |
1009 | icount->dsr = acm->iocount.dsr; |
1010 | icount->rng = acm->iocount.rng; | |
1011 | icount->dcd = acm->iocount.dcd; | |
1012 | icount->frame = acm->iocount.frame; | |
1013 | icount->overrun = acm->iocount.overrun; | |
1014 | icount->parity = acm->iocount.parity; | |
1015 | icount->brk = acm->iocount.brk; | |
797ef137 | 1016 | |
bb2d387c | 1017 | return 0; |
797ef137 ON |
1018 | } |
1019 | ||
6caa76b7 | 1020 | static int acm_tty_ioctl(struct tty_struct *tty, |
6e47e069 | 1021 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1022 | { |
18c75720 ON |
1023 | struct acm *acm = tty->driver_data; |
1024 | int rv = -ENOIOCTLCMD; | |
1025 | ||
1026 | switch (cmd) { | |
1027 | case TIOCGSERIAL: /* gets serial port data */ | |
1028 | rv = get_serial_info(acm, (struct serial_struct __user *) arg); | |
ba2d8ce9 DW |
1029 | break; |
1030 | case TIOCSSERIAL: | |
1031 | rv = set_serial_info(acm, (struct serial_struct __user *) arg); | |
18c75720 | 1032 | break; |
5a6a62bd | 1033 | case TIOCMIWAIT: |
8fdbeb26 ON |
1034 | rv = usb_autopm_get_interface(acm->control); |
1035 | if (rv < 0) { | |
1036 | rv = -EIO; | |
1037 | break; | |
1038 | } | |
5a6a62bd | 1039 | rv = wait_serial_change(acm, arg); |
8fdbeb26 | 1040 | usb_autopm_put_interface(acm->control); |
5a6a62bd | 1041 | break; |
18c75720 ON |
1042 | } |
1043 | ||
1044 | return rv; | |
1da177e4 LT |
1045 | } |
1046 | ||
6e47e069 AC |
1047 | static void acm_tty_set_termios(struct tty_struct *tty, |
1048 | struct ktermios *termios_old) | |
1da177e4 LT |
1049 | { |
1050 | struct acm *acm = tty->driver_data; | |
adc8d746 | 1051 | struct ktermios *termios = &tty->termios; |
1da177e4 LT |
1052 | struct usb_cdc_line_coding newline; |
1053 | int newctrl = acm->ctrlout; | |
1054 | ||
9b80fee1 | 1055 | newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty)); |
1da177e4 LT |
1056 | newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; |
1057 | newline.bParityType = termios->c_cflag & PARENB ? | |
6e47e069 AC |
1058 | (termios->c_cflag & PARODD ? 1 : 2) + |
1059 | (termios->c_cflag & CMSPAR ? 2 : 0) : 0; | |
301a29da NB |
1060 | switch (termios->c_cflag & CSIZE) { |
1061 | case CS5: | |
1062 | newline.bDataBits = 5; | |
1063 | break; | |
1064 | case CS6: | |
1065 | newline.bDataBits = 6; | |
1066 | break; | |
1067 | case CS7: | |
1068 | newline.bDataBits = 7; | |
1069 | break; | |
1070 | case CS8: | |
1071 | default: | |
1072 | newline.bDataBits = 8; | |
1073 | break; | |
1074 | } | |
6e47e069 | 1075 | /* FIXME: Needs to clear unsupported bits in the termios */ |
1da177e4 LT |
1076 | acm->clocal = ((termios->c_cflag & CLOCAL) != 0); |
1077 | ||
4473d054 | 1078 | if (C_BAUD(tty) == B0) { |
1da177e4 LT |
1079 | newline.dwDTERate = acm->line.dwDTERate; |
1080 | newctrl &= ~ACM_CTRL_DTR; | |
4473d054 | 1081 | } else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) { |
6e47e069 | 1082 | newctrl |= ACM_CTRL_DTR; |
4473d054 | 1083 | } |
1da177e4 LT |
1084 | |
1085 | if (newctrl != acm->ctrlout) | |
1086 | acm_set_control(acm, acm->ctrlout = newctrl); | |
1087 | ||
1088 | if (memcmp(&acm->line, &newline, sizeof newline)) { | |
1089 | memcpy(&acm->line, &newline, sizeof newline); | |
a5cc7ef9 JH |
1090 | dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n", |
1091 | __func__, | |
1092 | le32_to_cpu(newline.dwDTERate), | |
1da177e4 LT |
1093 | newline.bCharFormat, newline.bParityType, |
1094 | newline.bDataBits); | |
1095 | acm_set_line(acm, &acm->line); | |
1096 | } | |
1097 | } | |
1098 | ||
7fb57a01 | 1099 | static const struct tty_port_operations acm_port_ops = { |
0943d8ea | 1100 | .dtr_rts = acm_port_dtr_rts, |
7fb57a01 HS |
1101 | .shutdown = acm_port_shutdown, |
1102 | .activate = acm_port_activate, | |
1103 | .destruct = acm_port_destruct, | |
1104 | }; | |
1105 | ||
1da177e4 LT |
1106 | /* |
1107 | * USB probe and disconnect routines. | |
1108 | */ | |
1109 | ||
830f4021 | 1110 | /* Little helpers: write/read buffers free */ |
884b600f ON |
1111 | static void acm_write_buffers_free(struct acm *acm) |
1112 | { | |
1113 | int i; | |
1114 | struct acm_wb *wb; | |
1115 | ||
6e47e069 | 1116 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) |
e4614606 | 1117 | usb_free_coherent(acm->dev, acm->writesize, wb->buf, wb->dmah); |
884b600f ON |
1118 | } |
1119 | ||
830f4021 ON |
1120 | static void acm_read_buffers_free(struct acm *acm) |
1121 | { | |
dab54c9f | 1122 | int i; |
830f4021 | 1123 | |
dab54c9f | 1124 | for (i = 0; i < acm->rx_buflimit; i++) |
e4614606 | 1125 | usb_free_coherent(acm->dev, acm->readsize, |
088c64f8 | 1126 | acm->read_buffers[i].base, acm->read_buffers[i].dma); |
830f4021 ON |
1127 | } |
1128 | ||
884b600f ON |
1129 | /* Little helper: write buffers allocate */ |
1130 | static int acm_write_buffers_alloc(struct acm *acm) | |
1131 | { | |
1132 | int i; | |
1133 | struct acm_wb *wb; | |
1134 | ||
86478944 | 1135 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { |
997ea58e | 1136 | wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL, |
884b600f ON |
1137 | &wb->dmah); |
1138 | if (!wb->buf) { | |
1139 | while (i != 0) { | |
1140 | --i; | |
1141 | --wb; | |
997ea58e | 1142 | usb_free_coherent(acm->dev, acm->writesize, |
884b600f ON |
1143 | wb->buf, wb->dmah); |
1144 | } | |
1145 | return -ENOMEM; | |
1146 | } | |
1147 | } | |
1148 | return 0; | |
1149 | } | |
1150 | ||
10077d4a AC |
1151 | static int acm_probe(struct usb_interface *intf, |
1152 | const struct usb_device_id *id) | |
1da177e4 LT |
1153 | { |
1154 | struct usb_cdc_union_desc *union_header = NULL; | |
cb42b63d | 1155 | struct usb_cdc_call_mgmt_descriptor *cmgmd = NULL; |
c6dbf554 | 1156 | unsigned char *buffer = intf->altsetting->extra; |
1da177e4 LT |
1157 | int buflen = intf->altsetting->extralen; |
1158 | struct usb_interface *control_interface; | |
1159 | struct usb_interface *data_interface; | |
a2bfb4a3 ON |
1160 | struct usb_endpoint_descriptor *epctrl = NULL; |
1161 | struct usb_endpoint_descriptor *epread = NULL; | |
1162 | struct usb_endpoint_descriptor *epwrite = NULL; | |
1da177e4 | 1163 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
cb42b63d | 1164 | struct usb_cdc_parsed_header h; |
1da177e4 LT |
1165 | struct acm *acm; |
1166 | int minor; | |
6e47e069 | 1167 | int ctrlsize, readsize; |
1da177e4 | 1168 | u8 *buf; |
cb42b63d ON |
1169 | int call_intf_num = -1; |
1170 | int data_intf_num = -1; | |
1da177e4 | 1171 | unsigned long quirks; |
86478944 | 1172 | int num_rx_buf; |
61a87adf | 1173 | int i; |
a2bfb4a3 | 1174 | int combined_interfaces = 0; |
c93d8195 AK |
1175 | struct device *tty_dev; |
1176 | int rv = -ENOMEM; | |
1da177e4 | 1177 | |
86478944 | 1178 | /* normal quirks */ |
1da177e4 | 1179 | quirks = (unsigned long)id->driver_info; |
16142655 DT |
1180 | |
1181 | if (quirks == IGNORE_DEVICE) | |
1182 | return -ENODEV; | |
1183 | ||
7309aa84 ON |
1184 | memset(&h, 0x00, sizeof(struct usb_cdc_parsed_header)); |
1185 | ||
86478944 ON |
1186 | num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; |
1187 | ||
1188 | /* handle quirks deadly to normal probing*/ | |
1da177e4 LT |
1189 | if (quirks == NO_UNION_NORMAL) { |
1190 | data_interface = usb_ifnum_to_if(usb_dev, 1); | |
1191 | control_interface = usb_ifnum_to_if(usb_dev, 0); | |
8835ba4a ON |
1192 | /* we would crash */ |
1193 | if (!data_interface || !control_interface) | |
1194 | return -ENODEV; | |
1da177e4 LT |
1195 | goto skip_normal_probe; |
1196 | } | |
6e47e069 | 1197 | |
1da177e4 LT |
1198 | /* normal probing*/ |
1199 | if (!buffer) { | |
9908a32e | 1200 | dev_err(&intf->dev, "Weird descriptor references\n"); |
1da177e4 LT |
1201 | return -EINVAL; |
1202 | } | |
1203 | ||
2ad9d544 ON |
1204 | if (!intf->cur_altsetting) |
1205 | return -EINVAL; | |
1206 | ||
1da177e4 | 1207 | if (!buflen) { |
577045c0 TG |
1208 | if (intf->cur_altsetting->endpoint && |
1209 | intf->cur_altsetting->endpoint->extralen && | |
6e47e069 AC |
1210 | intf->cur_altsetting->endpoint->extra) { |
1211 | dev_dbg(&intf->dev, | |
1212 | "Seeking extra descriptors on endpoint\n"); | |
1da177e4 LT |
1213 | buflen = intf->cur_altsetting->endpoint->extralen; |
1214 | buffer = intf->cur_altsetting->endpoint->extra; | |
1215 | } else { | |
9908a32e GKH |
1216 | dev_err(&intf->dev, |
1217 | "Zero length descriptor references\n"); | |
1da177e4 LT |
1218 | return -EINVAL; |
1219 | } | |
1220 | } | |
1221 | ||
cb42b63d ON |
1222 | cdc_parse_cdc_header(&h, intf, buffer, buflen); |
1223 | union_header = h.usb_cdc_union_desc; | |
1224 | cmgmd = h.usb_cdc_call_mgmt_descriptor; | |
1225 | if (cmgmd) | |
1226 | call_intf_num = cmgmd->bDataInterface; | |
1da177e4 LT |
1227 | |
1228 | if (!union_header) { | |
cb42b63d | 1229 | if (call_intf_num > 0) { |
6e47e069 | 1230 | dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n"); |
fd5054c1 | 1231 | /* quirks for Droids MuIn LCD */ |
cb42b63d | 1232 | if (quirks & NO_DATA_INTERFACE) { |
fd5054c1 | 1233 | data_interface = usb_ifnum_to_if(usb_dev, 0); |
cb42b63d ON |
1234 | } else { |
1235 | data_intf_num = call_intf_num; | |
1236 | data_interface = usb_ifnum_to_if(usb_dev, data_intf_num); | |
1237 | } | |
1da177e4 LT |
1238 | control_interface = intf; |
1239 | } else { | |
a2bfb4a3 ON |
1240 | if (intf->cur_altsetting->desc.bNumEndpoints != 3) { |
1241 | dev_dbg(&intf->dev,"No union descriptor, giving up\n"); | |
1242 | return -ENODEV; | |
1243 | } else { | |
1244 | dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n"); | |
1245 | combined_interfaces = 1; | |
1246 | control_interface = data_interface = intf; | |
1247 | goto look_for_collapsed_interface; | |
1248 | } | |
1da177e4 LT |
1249 | } |
1250 | } else { | |
cb42b63d | 1251 | data_intf_num = union_header->bSlaveInterface0; |
1da177e4 | 1252 | control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); |
cb42b63d | 1253 | data_interface = usb_ifnum_to_if(usb_dev, data_intf_num); |
403dff4e GKH |
1254 | } |
1255 | ||
1256 | if (!control_interface || !data_interface) { | |
1257 | dev_dbg(&intf->dev, "no interfaces\n"); | |
1258 | return -ENODEV; | |
1da177e4 | 1259 | } |
2ad9d544 ON |
1260 | if (!data_interface->cur_altsetting || !control_interface->cur_altsetting) |
1261 | return -ENODEV; | |
6e47e069 | 1262 | |
cb42b63d | 1263 | if (data_intf_num != call_intf_num) |
6e47e069 | 1264 | dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n"); |
1da177e4 | 1265 | |
a2bfb4a3 ON |
1266 | if (control_interface == data_interface) { |
1267 | /* some broken devices designed for windows work this way */ | |
1268 | dev_warn(&intf->dev,"Control and data interfaces are not separated!\n"); | |
1269 | combined_interfaces = 1; | |
1270 | /* a popular other OS doesn't use it */ | |
1271 | quirks |= NO_CAP_LINE; | |
1272 | if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) { | |
1273 | dev_err(&intf->dev, "This needs exactly 3 endpoints\n"); | |
1274 | return -EINVAL; | |
1275 | } | |
1276 | look_for_collapsed_interface: | |
1277 | for (i = 0; i < 3; i++) { | |
1278 | struct usb_endpoint_descriptor *ep; | |
1279 | ep = &data_interface->cur_altsetting->endpoint[i].desc; | |
1280 | ||
1281 | if (usb_endpoint_is_int_in(ep)) | |
1282 | epctrl = ep; | |
1283 | else if (usb_endpoint_is_bulk_out(ep)) | |
1284 | epwrite = ep; | |
1285 | else if (usb_endpoint_is_bulk_in(ep)) | |
1286 | epread = ep; | |
1287 | else | |
1288 | return -EINVAL; | |
1289 | } | |
1290 | if (!epctrl || !epread || !epwrite) | |
1291 | return -ENODEV; | |
1292 | else | |
1293 | goto made_compressed_probe; | |
1294 | } | |
1295 | ||
1da177e4 LT |
1296 | skip_normal_probe: |
1297 | ||
1298 | /*workaround for switched interfaces */ | |
6e47e069 AC |
1299 | if (data_interface->cur_altsetting->desc.bInterfaceClass |
1300 | != CDC_DATA_INTERFACE_TYPE) { | |
1301 | if (control_interface->cur_altsetting->desc.bInterfaceClass | |
1302 | == CDC_DATA_INTERFACE_TYPE) { | |
6e47e069 AC |
1303 | dev_dbg(&intf->dev, |
1304 | "Your device has switched interfaces.\n"); | |
2cfef79d | 1305 | swap(control_interface, data_interface); |
1da177e4 LT |
1306 | } else { |
1307 | return -EINVAL; | |
1308 | } | |
1309 | } | |
74da5d68 AS |
1310 | |
1311 | /* Accept probe requests only for the control interface */ | |
a2bfb4a3 | 1312 | if (!combined_interfaces && intf != control_interface) |
74da5d68 | 1313 | return -ENODEV; |
6e47e069 | 1314 | |
a2bfb4a3 ON |
1315 | if (!combined_interfaces && usb_interface_claimed(data_interface)) { |
1316 | /* valid in this context */ | |
6e47e069 | 1317 | dev_dbg(&intf->dev, "The data interface isn't available\n"); |
1da177e4 LT |
1318 | return -EBUSY; |
1319 | } | |
1320 | ||
1321 | ||
99f347ca SS |
1322 | if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 || |
1323 | control_interface->cur_altsetting->desc.bNumEndpoints == 0) | |
1da177e4 LT |
1324 | return -EINVAL; |
1325 | ||
1326 | epctrl = &control_interface->cur_altsetting->endpoint[0].desc; | |
1327 | epread = &data_interface->cur_altsetting->endpoint[0].desc; | |
1328 | epwrite = &data_interface->cur_altsetting->endpoint[1].desc; | |
1329 | ||
1330 | ||
1331 | /* workaround for switched endpoints */ | |
45aea704 | 1332 | if (!usb_endpoint_dir_in(epread)) { |
1da177e4 | 1333 | /* descriptors are swapped */ |
6e47e069 AC |
1334 | dev_dbg(&intf->dev, |
1335 | "The data interface has switched endpoints\n"); | |
2cfef79d | 1336 | swap(epread, epwrite); |
1da177e4 | 1337 | } |
a2bfb4a3 | 1338 | made_compressed_probe: |
a5cc7ef9 | 1339 | dev_dbg(&intf->dev, "interfaces are valid\n"); |
1da177e4 | 1340 | |
6e47e069 | 1341 | acm = kzalloc(sizeof(struct acm), GFP_KERNEL); |
17136d49 | 1342 | if (acm == NULL) |
1da177e4 | 1343 | goto alloc_fail; |
1da177e4 | 1344 | |
7fb57a01 | 1345 | minor = acm_alloc_minor(acm); |
6dd3587f ON |
1346 | if (minor < 0) |
1347 | goto alloc_fail1; | |
7fb57a01 | 1348 | |
29cc8897 KM |
1349 | ctrlsize = usb_endpoint_maxp(epctrl); |
1350 | readsize = usb_endpoint_maxp(epread) * | |
6e47e069 | 1351 | (quirks == SINGLE_RX_URB ? 1 : 2); |
a2bfb4a3 | 1352 | acm->combined_interfaces = combined_interfaces; |
29cc8897 | 1353 | acm->writesize = usb_endpoint_maxp(epwrite) * 20; |
1da177e4 LT |
1354 | acm->control = control_interface; |
1355 | acm->data = data_interface; | |
1356 | acm->minor = minor; | |
1357 | acm->dev = usb_dev; | |
cb42b63d ON |
1358 | if (h.usb_cdc_acm_descriptor) |
1359 | acm->ctrl_caps = h.usb_cdc_acm_descriptor->bmCapabilities; | |
a2bfb4a3 ON |
1360 | if (quirks & NO_CAP_LINE) |
1361 | acm->ctrl_caps &= ~USB_CDC_CAP_LINE; | |
1da177e4 LT |
1362 | acm->ctrlsize = ctrlsize; |
1363 | acm->readsize = readsize; | |
86478944 | 1364 | acm->rx_buflimit = num_rx_buf; |
c4028958 | 1365 | INIT_WORK(&acm->work, acm_softint); |
5a6a62bd | 1366 | init_waitqueue_head(&acm->wioctl); |
884b600f | 1367 | spin_lock_init(&acm->write_lock); |
61a87adf | 1368 | spin_lock_init(&acm->read_lock); |
1365baf7 | 1369 | mutex_init(&acm->mutex); |
d305394e | 1370 | if (usb_endpoint_xfer_int(epread)) { |
cf7fdd57 | 1371 | acm->bInterval = epread->bInterval; |
74bccc9b LM |
1372 | acm->in = usb_rcvintpipe(usb_dev, epread->bEndpointAddress); |
1373 | } else { | |
1374 | acm->in = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); | |
1375 | } | |
1376 | if (usb_endpoint_xfer_int(epwrite)) | |
1377 | acm->out = usb_sndintpipe(usb_dev, epwrite->bEndpointAddress); | |
1378 | else | |
1379 | acm->out = usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress); | |
739e0285 AC |
1380 | tty_port_init(&acm->port); |
1381 | acm->port.ops = &acm_port_ops; | |
140cb81a | 1382 | init_usb_anchor(&acm->delayed); |
2a8cdfde | 1383 | acm->quirks = quirks; |
1da177e4 | 1384 | |
997ea58e | 1385 | buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); |
17136d49 | 1386 | if (!buf) |
1da177e4 | 1387 | goto alloc_fail2; |
1da177e4 LT |
1388 | acm->ctrl_buffer = buf; |
1389 | ||
17136d49 | 1390 | if (acm_write_buffers_alloc(acm) < 0) |
1da177e4 | 1391 | goto alloc_fail4; |
1da177e4 LT |
1392 | |
1393 | acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); | |
17136d49 | 1394 | if (!acm->ctrlurb) |
1da177e4 | 1395 | goto alloc_fail5; |
17136d49 | 1396 | |
86478944 | 1397 | for (i = 0; i < num_rx_buf; i++) { |
088c64f8 JH |
1398 | struct acm_rb *rb = &(acm->read_buffers[i]); |
1399 | struct urb *urb; | |
61a87adf | 1400 | |
74f5e1ba JH |
1401 | rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, |
1402 | &rb->dma); | |
17136d49 | 1403 | if (!rb->base) |
74f5e1ba | 1404 | goto alloc_fail6; |
088c64f8 JH |
1405 | rb->index = i; |
1406 | rb->instance = acm; | |
74f5e1ba | 1407 | |
088c64f8 | 1408 | urb = usb_alloc_urb(0, GFP_KERNEL); |
17136d49 | 1409 | if (!urb) |
c2572b78 | 1410 | goto alloc_fail6; |
17136d49 | 1411 | |
088c64f8 JH |
1412 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1413 | urb->transfer_dma = rb->dma; | |
d305394e | 1414 | if (usb_endpoint_xfer_int(epread)) |
74bccc9b | 1415 | usb_fill_int_urb(urb, acm->dev, acm->in, rb->base, |
088c64f8 JH |
1416 | acm->readsize, |
1417 | acm_read_bulk_callback, rb, | |
1418 | acm->bInterval); | |
74bccc9b LM |
1419 | else |
1420 | usb_fill_bulk_urb(urb, acm->dev, acm->in, rb->base, | |
088c64f8 JH |
1421 | acm->readsize, |
1422 | acm_read_bulk_callback, rb); | |
61a87adf | 1423 | |
088c64f8 JH |
1424 | acm->read_urbs[i] = urb; |
1425 | __set_bit(i, &acm->read_urbs_free); | |
61a87adf | 1426 | } |
6e47e069 | 1427 | for (i = 0; i < ACM_NW; i++) { |
e4cf3aa8 DE |
1428 | struct acm_wb *snd = &(acm->wb[i]); |
1429 | ||
6e47e069 | 1430 | snd->urb = usb_alloc_urb(0, GFP_KERNEL); |
17136d49 | 1431 | if (snd->urb == NULL) |
74f5e1ba | 1432 | goto alloc_fail7; |
e4cf3aa8 | 1433 | |
5186ffee | 1434 | if (usb_endpoint_xfer_int(epwrite)) |
74bccc9b | 1435 | usb_fill_int_urb(snd->urb, usb_dev, acm->out, |
5186ffee AL |
1436 | NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval); |
1437 | else | |
74bccc9b | 1438 | usb_fill_bulk_urb(snd->urb, usb_dev, acm->out, |
5186ffee | 1439 | NULL, acm->writesize, acm_write_bulk, snd); |
e4cf3aa8 | 1440 | snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
ffdb1e36 LB |
1441 | if (quirks & SEND_ZERO_PACKET) |
1442 | snd->urb->transfer_flags |= URB_ZERO_PACKET; | |
e4cf3aa8 | 1443 | snd->instance = acm; |
1da177e4 LT |
1444 | } |
1445 | ||
6e47e069 | 1446 | usb_set_intfdata(intf, acm); |
c4cabd28 ON |
1447 | |
1448 | i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); | |
1449 | if (i < 0) | |
74f5e1ba | 1450 | goto alloc_fail7; |
c4cabd28 | 1451 | |
cb42b63d ON |
1452 | if (h.usb_cdc_country_functional_desc) { /* export the country data */ |
1453 | struct usb_cdc_country_functional_desc * cfd = | |
1454 | h.usb_cdc_country_functional_desc; | |
1455 | ||
c4cabd28 ON |
1456 | acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); |
1457 | if (!acm->country_codes) | |
1458 | goto skip_countries; | |
1459 | acm->country_code_size = cfd->bLength - 4; | |
6e47e069 AC |
1460 | memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, |
1461 | cfd->bLength - 4); | |
c4cabd28 ON |
1462 | acm->country_rel_date = cfd->iCountryCodeRelDate; |
1463 | ||
1464 | i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); | |
1465 | if (i < 0) { | |
1466 | kfree(acm->country_codes); | |
e7c8e860 JL |
1467 | acm->country_codes = NULL; |
1468 | acm->country_code_size = 0; | |
c4cabd28 ON |
1469 | goto skip_countries; |
1470 | } | |
1471 | ||
6e47e069 AC |
1472 | i = device_create_file(&intf->dev, |
1473 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1474 | if (i < 0) { |
c2572b78 | 1475 | device_remove_file(&intf->dev, &dev_attr_wCountryCodes); |
c4cabd28 | 1476 | kfree(acm->country_codes); |
e7c8e860 JL |
1477 | acm->country_codes = NULL; |
1478 | acm->country_code_size = 0; | |
c4cabd28 ON |
1479 | goto skip_countries; |
1480 | } | |
1481 | } | |
1482 | ||
1483 | skip_countries: | |
6e47e069 | 1484 | usb_fill_int_urb(acm->ctrlurb, usb_dev, |
a2bfb4a3 ON |
1485 | usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), |
1486 | acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, | |
1487 | /* works around buggy devices */ | |
d102e78f | 1488 | epctrl->bInterval ? epctrl->bInterval : 16); |
1da177e4 LT |
1489 | acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1490 | acm->ctrlurb->transfer_dma = acm->ctrl_dma; | |
1491 | ||
1da177e4 LT |
1492 | dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); |
1493 | ||
1da177e4 LT |
1494 | acm->line.dwDTERate = cpu_to_le32(9600); |
1495 | acm->line.bDataBits = 8; | |
1496 | acm_set_line(acm, &acm->line); | |
1497 | ||
1498 | usb_driver_claim_interface(&acm_driver, data_interface, acm); | |
672c4e18 | 1499 | usb_set_intfdata(data_interface, acm); |
1da177e4 | 1500 | |
83ef344a | 1501 | usb_get_intf(control_interface); |
c93d8195 | 1502 | tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor, |
734cc178 | 1503 | &control_interface->dev); |
c93d8195 AK |
1504 | if (IS_ERR(tty_dev)) { |
1505 | rv = PTR_ERR(tty_dev); | |
1506 | goto alloc_fail8; | |
1507 | } | |
1da177e4 | 1508 | |
15bf722e | 1509 | if (quirks & CLEAR_HALT_CONDITIONS) { |
74bccc9b LM |
1510 | usb_clear_halt(usb_dev, acm->in); |
1511 | usb_clear_halt(usb_dev, acm->out); | |
15bf722e AS |
1512 | } |
1513 | ||
c4cabd28 | 1514 | return 0; |
c93d8195 AK |
1515 | alloc_fail8: |
1516 | if (acm->country_codes) { | |
1517 | device_remove_file(&acm->control->dev, | |
1518 | &dev_attr_wCountryCodes); | |
1519 | device_remove_file(&acm->control->dev, | |
1520 | &dev_attr_iCountryCodeRelDate); | |
d908f847 | 1521 | kfree(acm->country_codes); |
c93d8195 AK |
1522 | } |
1523 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); | |
74f5e1ba | 1524 | alloc_fail7: |
c93d8195 | 1525 | usb_set_intfdata(intf, NULL); |
e4cf3aa8 DE |
1526 | for (i = 0; i < ACM_NW; i++) |
1527 | usb_free_urb(acm->wb[i].urb); | |
c2572b78 | 1528 | alloc_fail6: |
86478944 | 1529 | for (i = 0; i < num_rx_buf; i++) |
088c64f8 | 1530 | usb_free_urb(acm->read_urbs[i]); |
74f5e1ba | 1531 | acm_read_buffers_free(acm); |
1da177e4 LT |
1532 | usb_free_urb(acm->ctrlurb); |
1533 | alloc_fail5: | |
884b600f | 1534 | acm_write_buffers_free(acm); |
1da177e4 | 1535 | alloc_fail4: |
997ea58e | 1536 | usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
1da177e4 | 1537 | alloc_fail2: |
7fb57a01 | 1538 | acm_release_minor(acm); |
6dd3587f | 1539 | alloc_fail1: |
1da177e4 LT |
1540 | kfree(acm); |
1541 | alloc_fail: | |
c93d8195 | 1542 | return rv; |
1da177e4 LT |
1543 | } |
1544 | ||
1545 | static void acm_disconnect(struct usb_interface *intf) | |
1546 | { | |
c4cabd28 | 1547 | struct acm *acm = usb_get_intfdata(intf); |
10077d4a | 1548 | struct tty_struct *tty; |
7fb57a01 | 1549 | |
672c4e18 DB |
1550 | /* sibling interface is already cleaning up */ |
1551 | if (!acm) | |
86067eea | 1552 | return; |
672c4e18 | 1553 | |
7fb57a01 HS |
1554 | mutex_lock(&acm->mutex); |
1555 | acm->disconnected = true; | |
6e47e069 | 1556 | if (acm->country_codes) { |
74da5d68 AS |
1557 | device_remove_file(&acm->control->dev, |
1558 | &dev_attr_wCountryCodes); | |
1559 | device_remove_file(&acm->control->dev, | |
1560 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1561 | } |
5a6a62bd | 1562 | wake_up_all(&acm->wioctl); |
74da5d68 | 1563 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); |
86067eea ON |
1564 | usb_set_intfdata(acm->control, NULL); |
1565 | usb_set_intfdata(acm->data, NULL); | |
7fb57a01 HS |
1566 | mutex_unlock(&acm->mutex); |
1567 | ||
1568 | tty = tty_port_tty_get(&acm->port); | |
1569 | if (tty) { | |
1570 | tty_vhangup(tty); | |
1571 | tty_kref_put(tty); | |
1572 | } | |
1da177e4 | 1573 | |
ba8c931d LM |
1574 | acm_kill_urbs(acm); |
1575 | cancel_work_sync(&acm->work); | |
1da177e4 | 1576 | |
cb25505f JH |
1577 | tty_unregister_device(acm_tty_driver, acm->minor); |
1578 | ||
884b600f | 1579 | acm_write_buffers_free(acm); |
e4614606 | 1580 | usb_free_coherent(acm->dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
830f4021 | 1581 | acm_read_buffers_free(acm); |
1da177e4 | 1582 | |
a2bfb4a3 ON |
1583 | if (!acm->combined_interfaces) |
1584 | usb_driver_release_interface(&acm_driver, intf == acm->control ? | |
830f4021 | 1585 | acm->data : acm->control); |
1da177e4 | 1586 | |
7fb57a01 | 1587 | tty_port_put(&acm->port); |
1da177e4 LT |
1588 | } |
1589 | ||
35758589 | 1590 | #ifdef CONFIG_PM |
1365baf7 ON |
1591 | static int acm_suspend(struct usb_interface *intf, pm_message_t message) |
1592 | { | |
1593 | struct acm *acm = usb_get_intfdata(intf); | |
11ea859d ON |
1594 | int cnt; |
1595 | ||
bbf0cb3e | 1596 | spin_lock_irq(&acm->write_lock); |
5b1b0b81 | 1597 | if (PMSG_IS_AUTO(message)) { |
5a345c20 | 1598 | if (acm->transmitting) { |
bbf0cb3e | 1599 | spin_unlock_irq(&acm->write_lock); |
11ea859d | 1600 | return -EBUSY; |
5a345c20 | 1601 | } |
11ea859d | 1602 | } |
11ea859d | 1603 | cnt = acm->susp_count++; |
bbf0cb3e | 1604 | spin_unlock_irq(&acm->write_lock); |
1365baf7 | 1605 | |
11ea859d | 1606 | if (cnt) |
1365baf7 | 1607 | return 0; |
1365baf7 | 1608 | |
ba8c931d LM |
1609 | acm_kill_urbs(acm); |
1610 | cancel_work_sync(&acm->work); | |
1365baf7 | 1611 | |
1365baf7 ON |
1612 | return 0; |
1613 | } | |
1614 | ||
1615 | static int acm_resume(struct usb_interface *intf) | |
1616 | { | |
1617 | struct acm *acm = usb_get_intfdata(intf); | |
140cb81a | 1618 | struct urb *urb; |
1365baf7 ON |
1619 | int rv = 0; |
1620 | ||
bbf0cb3e | 1621 | spin_lock_irq(&acm->write_lock); |
11ea859d | 1622 | |
e144ed28 JH |
1623 | if (--acm->susp_count) |
1624 | goto out; | |
1365baf7 | 1625 | |
d41861ca | 1626 | if (tty_port_initialized(&acm->port)) { |
e144ed28 | 1627 | rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC); |
97d35f95 | 1628 | |
140cb81a JH |
1629 | for (;;) { |
1630 | urb = usb_get_from_anchor(&acm->delayed); | |
1631 | if (!urb) | |
1632 | break; | |
1633 | ||
1634 | acm_start_wb(acm, urb->context); | |
97d35f95 ON |
1635 | } |
1636 | ||
1637 | /* | |
1638 | * delayed error checking because we must | |
1639 | * do the write path at all cost | |
1640 | */ | |
1365baf7 | 1641 | if (rv < 0) |
e144ed28 | 1642 | goto out; |
1365baf7 | 1643 | |
e144ed28 | 1644 | rv = acm_submit_read_urbs(acm, GFP_ATOMIC); |
1365baf7 | 1645 | } |
e144ed28 | 1646 | out: |
bbf0cb3e | 1647 | spin_unlock_irq(&acm->write_lock); |
1365baf7 | 1648 | |
1365baf7 ON |
1649 | return rv; |
1650 | } | |
35758589 | 1651 | |
a91b0c50 FL |
1652 | static int acm_reset_resume(struct usb_interface *intf) |
1653 | { | |
1654 | struct acm *acm = usb_get_intfdata(intf); | |
a91b0c50 | 1655 | |
d41861ca | 1656 | if (tty_port_initialized(&acm->port)) |
aa27a094 | 1657 | tty_port_tty_hangup(&acm->port, false); |
7fb57a01 | 1658 | |
a91b0c50 FL |
1659 | return acm_resume(intf); |
1660 | } | |
1661 | ||
35758589 | 1662 | #endif /* CONFIG_PM */ |
c1479a92 | 1663 | |
1aba579f LM |
1664 | static int acm_pre_reset(struct usb_interface *intf) |
1665 | { | |
1666 | struct acm *acm = usb_get_intfdata(intf); | |
1667 | ||
1668 | clear_bit(EVENT_RX_STALL, &acm->flags); | |
1669 | ||
1670 | return 0; | |
1671 | } | |
1672 | ||
c1479a92 AT |
1673 | #define NOKIA_PCSUITE_ACM_INFO(x) \ |
1674 | USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \ | |
1675 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1676 | USB_CDC_ACM_PROTO_VENDOR) | |
1677 | ||
4035e456 TG |
1678 | #define SAMSUNG_PCSUITE_ACM_INFO(x) \ |
1679 | USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \ | |
1680 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1681 | USB_CDC_ACM_PROTO_VENDOR) | |
1682 | ||
1da177e4 LT |
1683 | /* |
1684 | * USB driver structure. | |
1685 | */ | |
1686 | ||
6ef4852b | 1687 | static const struct usb_device_id acm_ids[] = { |
1da177e4 | 1688 | /* quirky and broken devices */ |
b20b1618 BG |
1689 | { USB_DEVICE(0x076d, 0x0006), /* Denso Cradle CU-321 */ |
1690 | .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ | |
3b59d16c DC |
1691 | { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */ |
1692 | .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ | |
1da177e4 LT |
1693 | { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ |
1694 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1695 | }, | |
b0e2a705 AA |
1696 | { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ |
1697 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1698 | }, | |
0f9c7b4a AL |
1699 | { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ |
1700 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1701 | }, | |
8753e65e MO |
1702 | { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */ |
1703 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1704 | }, | |
91a9c921 CM |
1705 | { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */ |
1706 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1707 | }, | |
7abcf20b AC |
1708 | { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */ |
1709 | .driver_info = SINGLE_RX_URB, | |
1710 | }, | |
86478944 ON |
1711 | { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */ |
1712 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1713 | }, | |
3dd2ae81 ON |
1714 | { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ |
1715 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1716 | }, | |
9be8456c ON |
1717 | { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ |
1718 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1719 | }, | |
6149ed5e IM |
1720 | { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ |
1721 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1722 | }, | |
c8fd2c37 ES |
1723 | { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */ |
1724 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1725 | }, | |
c89c60e9 AC |
1726 | { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */ |
1727 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1728 | }, | |
cab98a0a XK |
1729 | { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */ |
1730 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1731 | }, | |
2a8cdfde JH |
1732 | { USB_DEVICE(0x20df, 0x0001), /* Simtec Electronics Entropy Key */ |
1733 | .driver_info = QUIRK_CONTROL_LINE_STATE, }, | |
cf84a691 | 1734 | { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */ |
30121604 | 1735 | { USB_DEVICE(0x2184, 0x0036) }, /* GW Instek AFG-125 */ |
155df65a DT |
1736 | { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */ |
1737 | }, | |
6abff5dc KH |
1738 | /* Motorola H24 HSPA module: */ |
1739 | { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */ | |
895d240d MU |
1740 | { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */ |
1741 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1742 | }, | |
1743 | { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */ | |
1744 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1745 | }, | |
1746 | { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */ | |
1747 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1748 | }, | |
1749 | { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */ | |
1750 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1751 | }, | |
1752 | { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */ | |
1753 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1754 | }, | |
1755 | { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */ | |
1756 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1757 | }, | |
1758 | { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */ | |
1759 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1760 | }, | |
6abff5dc | 1761 | |
c332b4e1 AR |
1762 | { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */ |
1763 | .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on | |
1764 | data interface instead of | |
1765 | communications interface. | |
1766 | Maybe we should define a new | |
1767 | quirk for this. */ | |
1768 | }, | |
e7d491a1 JCR |
1769 | { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */ |
1770 | .driver_info = NO_UNION_NORMAL, | |
1771 | }, | |
036915a7 DL |
1772 | { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */ |
1773 | .driver_info = NO_UNION_NORMAL, | |
1774 | }, | |
1f17c502 KK |
1775 | { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */ |
1776 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1777 | }, | |
c3baa19b RN |
1778 | { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */ |
1779 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1780 | }, | |
9be8456c | 1781 | |
15bf722e AS |
1782 | { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */ |
1783 | .driver_info = CLEAR_HALT_CONDITIONS, | |
1784 | }, | |
1785 | ||
c1479a92 AT |
1786 | /* Nokia S60 phones expose two ACM channels. The first is |
1787 | * a modem and is picked up by the standard AT-command | |
1788 | * information below. The second is 'vendor-specific' but | |
1789 | * is treated as a serial device at the S60 end, so we want | |
1790 | * to expose it on Linux too. */ | |
1791 | { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */ | |
1792 | { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */ | |
1793 | { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */ | |
1794 | { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */ | |
1795 | { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */ | |
1796 | { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */ | |
1797 | { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */ | |
1798 | { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */ | |
1799 | { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */ | |
1800 | { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */ | |
1801 | { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */ | |
1802 | { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */ | |
1803 | { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */ | |
1804 | { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */ | |
1805 | { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */ | |
1806 | { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */ | |
1807 | { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */ | |
1808 | { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */ | |
1809 | { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */ | |
1810 | { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */ | |
1811 | { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */ | |
1812 | { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */ | |
1813 | { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */ | |
1814 | { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */ | |
1815 | { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */ | |
1816 | { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */ | |
1817 | { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */ | |
1818 | { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */ | |
1819 | { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */ | |
1820 | { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */ | |
1821 | { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */ | |
1822 | { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */ | |
1823 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1824 | { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */ | |
1825 | { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */ | |
1826 | { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */ | |
1827 | { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */ | |
1828 | { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */ | |
1829 | { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */ | |
1830 | { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */ | |
1831 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1832 | { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */ | |
1833 | { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */ | |
83a4eae9 | 1834 | { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */ |
4035e456 TG |
1835 | { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */ |
1836 | { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */ | |
1837 | { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */ | |
1838 | { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */ | |
1839 | { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */ | |
1840 | { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */ | |
1841 | { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */ | |
1842 | { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */ | |
1843 | { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */ | |
1844 | { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */ | |
721d92fc | 1845 | { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */ |
4061fde2 TG |
1846 | { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */ |
1847 | { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */ | |
4035e456 | 1848 | { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */ |
c1479a92 | 1849 | |
65e52f41 DP |
1850 | /* Support for Owen devices */ |
1851 | { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */ | |
1852 | ||
c1479a92 AT |
1853 | /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */ |
1854 | ||
fd5054c1 ES |
1855 | /* Support for Droids MuIn LCD */ |
1856 | { USB_DEVICE(0x04d8, 0x000b), | |
1857 | .driver_info = NO_DATA_INTERFACE, | |
1858 | }, | |
1859 | ||
16142655 DT |
1860 | #if IS_ENABLED(CONFIG_INPUT_IMS_PCU) |
1861 | { USB_DEVICE(0x04d8, 0x0082), /* Application mode */ | |
1862 | .driver_info = IGNORE_DEVICE, | |
1863 | }, | |
1864 | { USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */ | |
1865 | .driver_info = IGNORE_DEVICE, | |
1866 | }, | |
1867 | #endif | |
1868 | ||
e912e685 ON |
1869 | /*Samsung phone in firmware update mode */ |
1870 | { USB_DEVICE(0x04e8, 0x685d), | |
1871 | .driver_info = IGNORE_DEVICE, | |
1872 | }, | |
1873 | ||
f33a7f72 JJ |
1874 | /* Exclude Infineon Flash Loader utility */ |
1875 | { USB_DEVICE(0x058b, 0x0041), | |
1876 | .driver_info = IGNORE_DEVICE, | |
1877 | }, | |
1878 | ||
5b239f0a PC |
1879 | /* control interfaces without any protocol set */ |
1880 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1881 | USB_CDC_PROTO_NONE) }, | |
1882 | ||
1da177e4 LT |
1883 | /* control interfaces with various AT-command sets */ |
1884 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1885 | USB_CDC_ACM_PROTO_AT_V25TER) }, | |
1886 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1887 | USB_CDC_ACM_PROTO_AT_PCCA101) }, | |
1888 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1889 | USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) }, | |
1890 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1891 | USB_CDC_ACM_PROTO_AT_GSM) }, | |
1892 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
6e47e069 | 1893 | USB_CDC_ACM_PROTO_AT_3G) }, |
1da177e4 LT |
1894 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
1895 | USB_CDC_ACM_PROTO_AT_CDMA) }, | |
1896 | ||
ffdb1e36 LB |
1897 | { USB_DEVICE(0x1519, 0x0452), /* Intel 7260 modem */ |
1898 | .driver_info = SEND_ZERO_PACKET, | |
1899 | }, | |
1900 | ||
1da177e4 LT |
1901 | { } |
1902 | }; | |
1903 | ||
6e47e069 | 1904 | MODULE_DEVICE_TABLE(usb, acm_ids); |
1da177e4 LT |
1905 | |
1906 | static struct usb_driver acm_driver = { | |
1da177e4 LT |
1907 | .name = "cdc_acm", |
1908 | .probe = acm_probe, | |
1909 | .disconnect = acm_disconnect, | |
35758589 | 1910 | #ifdef CONFIG_PM |
1365baf7 ON |
1911 | .suspend = acm_suspend, |
1912 | .resume = acm_resume, | |
a91b0c50 | 1913 | .reset_resume = acm_reset_resume, |
35758589 | 1914 | #endif |
1aba579f | 1915 | .pre_reset = acm_pre_reset, |
1da177e4 | 1916 | .id_table = acm_ids, |
35758589 | 1917 | #ifdef CONFIG_PM |
1365baf7 | 1918 | .supports_autosuspend = 1, |
35758589 | 1919 | #endif |
e1f12eb6 | 1920 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
1921 | }; |
1922 | ||
1923 | /* | |
1924 | * TTY driver structures. | |
1925 | */ | |
1926 | ||
b68e31d0 | 1927 | static const struct tty_operations acm_ops = { |
7fb57a01 | 1928 | .install = acm_tty_install, |
1da177e4 LT |
1929 | .open = acm_tty_open, |
1930 | .close = acm_tty_close, | |
7fb57a01 | 1931 | .cleanup = acm_tty_cleanup, |
10077d4a | 1932 | .hangup = acm_tty_hangup, |
1da177e4 | 1933 | .write = acm_tty_write, |
a81cf979 ON |
1934 | .put_char = acm_tty_put_char, |
1935 | .flush_chars = acm_tty_flush_chars, | |
1da177e4 LT |
1936 | .write_room = acm_tty_write_room, |
1937 | .ioctl = acm_tty_ioctl, | |
1938 | .throttle = acm_tty_throttle, | |
1939 | .unthrottle = acm_tty_unthrottle, | |
1940 | .chars_in_buffer = acm_tty_chars_in_buffer, | |
1941 | .break_ctl = acm_tty_break_ctl, | |
1942 | .set_termios = acm_tty_set_termios, | |
1943 | .tiocmget = acm_tty_tiocmget, | |
1944 | .tiocmset = acm_tty_tiocmset, | |
bb2d387c | 1945 | .get_icount = acm_tty_get_icount, |
1da177e4 LT |
1946 | }; |
1947 | ||
1948 | /* | |
1949 | * Init / exit. | |
1950 | */ | |
1951 | ||
1952 | static int __init acm_init(void) | |
1953 | { | |
1954 | int retval; | |
1955 | acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS); | |
1956 | if (!acm_tty_driver) | |
1957 | return -ENOMEM; | |
1da177e4 LT |
1958 | acm_tty_driver->driver_name = "acm", |
1959 | acm_tty_driver->name = "ttyACM", | |
1da177e4 LT |
1960 | acm_tty_driver->major = ACM_TTY_MAJOR, |
1961 | acm_tty_driver->minor_start = 0, | |
1962 | acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, | |
1963 | acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, | |
331b8319 | 1964 | acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 | 1965 | acm_tty_driver->init_termios = tty_std_termios; |
6e47e069 AC |
1966 | acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | |
1967 | HUPCL | CLOCAL; | |
1da177e4 LT |
1968 | tty_set_operations(acm_tty_driver, &acm_ops); |
1969 | ||
1970 | retval = tty_register_driver(acm_tty_driver); | |
1971 | if (retval) { | |
1972 | put_tty_driver(acm_tty_driver); | |
1973 | return retval; | |
1974 | } | |
1975 | ||
1976 | retval = usb_register(&acm_driver); | |
1977 | if (retval) { | |
1978 | tty_unregister_driver(acm_tty_driver); | |
1979 | put_tty_driver(acm_tty_driver); | |
1980 | return retval; | |
1981 | } | |
1982 | ||
a2c7b935 | 1983 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
1984 | |
1985 | return 0; | |
1986 | } | |
1987 | ||
1988 | static void __exit acm_exit(void) | |
1989 | { | |
1990 | usb_deregister(&acm_driver); | |
1991 | tty_unregister_driver(acm_tty_driver); | |
1992 | put_tty_driver(acm_tty_driver); | |
91b72560 | 1993 | idr_destroy(&acm_minors); |
1da177e4 LT |
1994 | } |
1995 | ||
1996 | module_init(acm_init); | |
1997 | module_exit(acm_exit); | |
1998 | ||
6e47e069 AC |
1999 | MODULE_AUTHOR(DRIVER_AUTHOR); |
2000 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 2001 | MODULE_LICENSE("GPL"); |
e766aeb8 | 2002 | MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR); |