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 | |
7fb57a01 HS |
63 | /* |
64 | * acm_table accessors | |
65 | */ | |
1da177e4 | 66 | |
7fb57a01 HS |
67 | /* |
68 | * Look up an ACM structure by index. If found and not disconnected, increment | |
69 | * its refcount and return it with its mutex held. | |
70 | */ | |
71 | static struct acm *acm_get_by_index(unsigned index) | |
72 | { | |
73 | struct acm *acm; | |
74 | ||
75 | mutex_lock(&acm_table_lock); | |
76 | acm = acm_table[index]; | |
77 | if (acm) { | |
78 | mutex_lock(&acm->mutex); | |
79 | if (acm->disconnected) { | |
80 | mutex_unlock(&acm->mutex); | |
81 | acm = NULL; | |
82 | } else { | |
83 | tty_port_get(&acm->port); | |
84 | mutex_unlock(&acm->mutex); | |
85 | } | |
86 | } | |
87 | mutex_unlock(&acm_table_lock); | |
88 | return acm; | |
89 | } | |
90 | ||
91 | /* | |
92 | * Try to find an available minor number and if found, associate it with 'acm'. | |
93 | */ | |
94 | static int acm_alloc_minor(struct acm *acm) | |
95 | { | |
96 | int minor; | |
97 | ||
98 | mutex_lock(&acm_table_lock); | |
99 | for (minor = 0; minor < ACM_TTY_MINORS; minor++) { | |
100 | if (!acm_table[minor]) { | |
101 | acm_table[minor] = acm; | |
102 | break; | |
103 | } | |
104 | } | |
105 | mutex_unlock(&acm_table_lock); | |
106 | ||
107 | return minor; | |
108 | } | |
109 | ||
110 | /* Release the minor number associated with 'acm'. */ | |
111 | static void acm_release_minor(struct acm *acm) | |
112 | { | |
113 | mutex_lock(&acm_table_lock); | |
114 | acm_table[acm->minor] = NULL; | |
115 | mutex_unlock(&acm_table_lock); | |
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 LT |
124 | { |
125 | int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), | |
126 | request, USB_RT_ACM, value, | |
127 | acm->control->altsetting[0].desc.bInterfaceNumber, | |
128 | buf, len, 5000); | |
a5cc7ef9 JH |
129 | dev_dbg(&acm->control->dev, |
130 | "%s - rq 0x%02x, val %#x, len %#x, result %d\n", | |
131 | __func__, request, value, len, retval); | |
1da177e4 LT |
132 | return retval < 0 ? retval : 0; |
133 | } | |
134 | ||
135 | /* devices aren't required to support these requests. | |
136 | * the cdc acm descriptor tells whether they do... | |
137 | */ | |
138 | #define acm_set_control(acm, control) \ | |
139 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0) | |
140 | #define acm_set_line(acm, line) \ | |
141 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line)) | |
142 | #define acm_send_break(acm, ms) \ | |
143 | acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0) | |
144 | ||
884b600f ON |
145 | /* |
146 | * Write buffer management. | |
147 | * All of these assume proper locks taken by the caller. | |
148 | */ | |
149 | ||
150 | static int acm_wb_alloc(struct acm *acm) | |
151 | { | |
152 | int i, wbn; | |
153 | struct acm_wb *wb; | |
154 | ||
e4cf3aa8 | 155 | wbn = 0; |
884b600f ON |
156 | i = 0; |
157 | for (;;) { | |
158 | wb = &acm->wb[wbn]; | |
159 | if (!wb->use) { | |
160 | wb->use = 1; | |
161 | return wbn; | |
162 | } | |
86478944 ON |
163 | wbn = (wbn + 1) % ACM_NW; |
164 | if (++i >= ACM_NW) | |
884b600f ON |
165 | return -1; |
166 | } | |
167 | } | |
168 | ||
884b600f ON |
169 | static int acm_wb_is_avail(struct acm *acm) |
170 | { | |
171 | int i, n; | |
e5fbab51 | 172 | unsigned long flags; |
884b600f | 173 | |
86478944 | 174 | n = ACM_NW; |
e5fbab51 | 175 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 | 176 | for (i = 0; i < ACM_NW; i++) |
86478944 | 177 | n -= acm->wb[i].use; |
e5fbab51 | 178 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
179 | return n; |
180 | } | |
181 | ||
884b600f | 182 | /* |
ad0b65ef | 183 | * Finish write. Caller must hold acm->write_lock |
884b600f | 184 | */ |
e4cf3aa8 | 185 | static void acm_write_done(struct acm *acm, struct acm_wb *wb) |
884b600f | 186 | { |
e4cf3aa8 | 187 | wb->use = 0; |
11ea859d | 188 | acm->transmitting--; |
97d35f95 | 189 | usb_autopm_put_interface_async(acm->control); |
884b600f ON |
190 | } |
191 | ||
192 | /* | |
193 | * Poke write. | |
11ea859d ON |
194 | * |
195 | * the caller is responsible for locking | |
884b600f | 196 | */ |
11ea859d ON |
197 | |
198 | static int acm_start_wb(struct acm *acm, struct acm_wb *wb) | |
199 | { | |
200 | int rc; | |
201 | ||
202 | acm->transmitting++; | |
203 | ||
204 | wb->urb->transfer_buffer = wb->buf; | |
205 | wb->urb->transfer_dma = wb->dmah; | |
206 | wb->urb->transfer_buffer_length = wb->len; | |
207 | wb->urb->dev = acm->dev; | |
208 | ||
6e47e069 AC |
209 | rc = usb_submit_urb(wb->urb, GFP_ATOMIC); |
210 | if (rc < 0) { | |
a5cc7ef9 JH |
211 | dev_err(&acm->data->dev, |
212 | "%s - usb_submit_urb(write bulk) failed: %d\n", | |
213 | __func__, rc); | |
11ea859d ON |
214 | acm_write_done(acm, wb); |
215 | } | |
216 | return rc; | |
217 | } | |
218 | ||
e4cf3aa8 | 219 | static int acm_write_start(struct acm *acm, int wbn) |
884b600f ON |
220 | { |
221 | unsigned long flags; | |
934da463 | 222 | struct acm_wb *wb = &acm->wb[wbn]; |
884b600f ON |
223 | int rc; |
224 | ||
225 | spin_lock_irqsave(&acm->write_lock, flags); | |
226 | if (!acm->dev) { | |
934da463 | 227 | wb->use = 0; |
884b600f ON |
228 | spin_unlock_irqrestore(&acm->write_lock, flags); |
229 | return -ENODEV; | |
230 | } | |
231 | ||
5e9e75f8 | 232 | dev_vdbg(&acm->data->dev, "%s - susp_count %d\n", __func__, |
a5cc7ef9 | 233 | acm->susp_count); |
97d35f95 | 234 | usb_autopm_get_interface_async(acm->control); |
11ea859d | 235 | if (acm->susp_count) { |
97d35f95 ON |
236 | if (!acm->delayed_wb) |
237 | acm->delayed_wb = wb; | |
238 | else | |
239 | usb_autopm_put_interface_async(acm->control); | |
11ea859d ON |
240 | spin_unlock_irqrestore(&acm->write_lock, flags); |
241 | return 0; /* A white lie */ | |
242 | } | |
243 | usb_mark_last_busy(acm->dev); | |
244 | ||
11ea859d | 245 | rc = acm_start_wb(acm, wb); |
884b600f ON |
246 | spin_unlock_irqrestore(&acm->write_lock, flags); |
247 | ||
884b600f | 248 | return rc; |
11ea859d | 249 | |
884b600f | 250 | } |
c4cabd28 ON |
251 | /* |
252 | * attributes exported through sysfs | |
253 | */ | |
254 | static ssize_t show_caps | |
255 | (struct device *dev, struct device_attribute *attr, char *buf) | |
256 | { | |
257 | struct usb_interface *intf = to_usb_interface(dev); | |
258 | struct acm *acm = usb_get_intfdata(intf); | |
259 | ||
260 | return sprintf(buf, "%d", acm->ctrl_caps); | |
261 | } | |
262 | static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL); | |
263 | ||
264 | static ssize_t show_country_codes | |
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 | memcpy(buf, acm->country_codes, acm->country_code_size); | |
271 | return acm->country_code_size; | |
272 | } | |
273 | ||
274 | static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL); | |
275 | ||
276 | static ssize_t show_country_rel_date | |
277 | (struct device *dev, struct device_attribute *attr, char *buf) | |
278 | { | |
279 | struct usb_interface *intf = to_usb_interface(dev); | |
280 | struct acm *acm = usb_get_intfdata(intf); | |
281 | ||
282 | return sprintf(buf, "%d", acm->country_rel_date); | |
283 | } | |
884b600f | 284 | |
c4cabd28 | 285 | static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL); |
1da177e4 LT |
286 | /* |
287 | * Interrupt handlers for various ACM device responses | |
288 | */ | |
289 | ||
290 | /* control interface reports status changes with "interrupt" transfers */ | |
7d12e780 | 291 | static void acm_ctrl_irq(struct urb *urb) |
1da177e4 LT |
292 | { |
293 | struct acm *acm = urb->context; | |
294 | struct usb_cdc_notification *dr = urb->transfer_buffer; | |
10077d4a | 295 | struct tty_struct *tty; |
1da177e4 LT |
296 | unsigned char *data; |
297 | int newctrl; | |
185d4058 GKH |
298 | int retval; |
299 | int status = urb->status; | |
1da177e4 | 300 | |
185d4058 | 301 | switch (status) { |
1da177e4 LT |
302 | case 0: |
303 | /* success */ | |
304 | break; | |
305 | case -ECONNRESET: | |
306 | case -ENOENT: | |
307 | case -ESHUTDOWN: | |
308 | /* this urb is terminated, clean up */ | |
a5cc7ef9 JH |
309 | dev_dbg(&acm->control->dev, |
310 | "%s - urb shutting down with status: %d\n", | |
311 | __func__, status); | |
1da177e4 LT |
312 | return; |
313 | default: | |
a5cc7ef9 JH |
314 | dev_dbg(&acm->control->dev, |
315 | "%s - nonzero urb status received: %d\n", | |
316 | __func__, status); | |
1da177e4 LT |
317 | goto exit; |
318 | } | |
319 | ||
7e7797e7 JH |
320 | usb_mark_last_busy(acm->dev); |
321 | ||
1da177e4 LT |
322 | data = (unsigned char *)(dr + 1); |
323 | switch (dr->bNotificationType) { | |
6e47e069 | 324 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: |
a5cc7ef9 JH |
325 | dev_dbg(&acm->control->dev, "%s - network connection: %d\n", |
326 | __func__, dr->wValue); | |
6e47e069 | 327 | break; |
1da177e4 | 328 | |
6e47e069 AC |
329 | case USB_CDC_NOTIFY_SERIAL_STATE: |
330 | tty = tty_port_tty_get(&acm->port); | |
331 | newctrl = get_unaligned_le16(data); | |
1da177e4 | 332 | |
6e47e069 AC |
333 | if (tty) { |
334 | if (!acm->clocal && | |
335 | (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { | |
a5cc7ef9 JH |
336 | dev_dbg(&acm->control->dev, |
337 | "%s - calling hangup\n", __func__); | |
6e47e069 | 338 | tty_hangup(tty); |
1da177e4 | 339 | } |
6e47e069 AC |
340 | tty_kref_put(tty); |
341 | } | |
1da177e4 | 342 | |
6e47e069 | 343 | acm->ctrlin = newctrl; |
1da177e4 | 344 | |
a5cc7ef9 JH |
345 | dev_dbg(&acm->control->dev, |
346 | "%s - input control lines: dcd%c dsr%c break%c " | |
347 | "ring%c framing%c parity%c overrun%c\n", | |
348 | __func__, | |
6e47e069 AC |
349 | acm->ctrlin & ACM_CTRL_DCD ? '+' : '-', |
350 | acm->ctrlin & ACM_CTRL_DSR ? '+' : '-', | |
351 | acm->ctrlin & ACM_CTRL_BRK ? '+' : '-', | |
352 | acm->ctrlin & ACM_CTRL_RI ? '+' : '-', | |
353 | acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-', | |
354 | acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-', | |
355 | acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-'); | |
1da177e4 LT |
356 | break; |
357 | ||
6e47e069 | 358 | default: |
a5cc7ef9 JH |
359 | dev_dbg(&acm->control->dev, |
360 | "%s - unknown notification %d received: index %d " | |
361 | "len %d data0 %d data1 %d\n", | |
362 | __func__, | |
6e47e069 AC |
363 | dr->bNotificationType, dr->wIndex, |
364 | dr->wLength, data[0], data[1]); | |
365 | break; | |
1da177e4 LT |
366 | } |
367 | exit: | |
6e47e069 | 368 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
185d4058 | 369 | if (retval) |
1d9846e5 JH |
370 | dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n", |
371 | __func__, retval); | |
1da177e4 LT |
372 | } |
373 | ||
088c64f8 | 374 | static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) |
1da177e4 | 375 | { |
088c64f8 | 376 | int res; |
185d4058 | 377 | |
088c64f8 JH |
378 | if (!test_and_clear_bit(index, &acm->read_urbs_free)) |
379 | return 0; | |
1da177e4 | 380 | |
088c64f8 JH |
381 | dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index); |
382 | ||
383 | res = usb_submit_urb(acm->read_urbs[index], mem_flags); | |
384 | if (res) { | |
385 | if (res != -EPERM) { | |
386 | dev_err(&acm->data->dev, | |
387 | "%s - usb_submit_urb failed: %d\n", | |
388 | __func__, res); | |
389 | } | |
390 | set_bit(index, &acm->read_urbs_free); | |
391 | return res; | |
11ea859d | 392 | } |
1da177e4 | 393 | |
088c64f8 JH |
394 | return 0; |
395 | } | |
1da177e4 | 396 | |
088c64f8 JH |
397 | static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags) |
398 | { | |
399 | int res; | |
400 | int i; | |
61a87adf | 401 | |
088c64f8 JH |
402 | for (i = 0; i < acm->rx_buflimit; ++i) { |
403 | res = acm_submit_read_urb(acm, i, mem_flags); | |
404 | if (res) | |
405 | return res; | |
86478944 | 406 | } |
088c64f8 JH |
407 | |
408 | return 0; | |
1da177e4 LT |
409 | } |
410 | ||
088c64f8 | 411 | static void acm_process_read_urb(struct acm *acm, struct urb *urb) |
1da177e4 | 412 | { |
10077d4a | 413 | struct tty_struct *tty; |
1da177e4 | 414 | |
088c64f8 | 415 | if (!urb->actual_length) |
ca79b7b4 | 416 | return; |
61a87adf | 417 | |
10077d4a | 418 | tty = tty_port_tty_get(&acm->port); |
088c64f8 JH |
419 | if (!tty) |
420 | return; | |
10077d4a | 421 | |
088c64f8 JH |
422 | tty_insert_flip_string(tty, urb->transfer_buffer, urb->actual_length); |
423 | tty_flip_buffer_push(tty); | |
61a87adf | 424 | |
10077d4a | 425 | tty_kref_put(tty); |
088c64f8 | 426 | } |
10077d4a | 427 | |
088c64f8 JH |
428 | static void acm_read_bulk_callback(struct urb *urb) |
429 | { | |
430 | struct acm_rb *rb = urb->context; | |
431 | struct acm *acm = rb->instance; | |
432 | unsigned long flags; | |
61a87adf | 433 | |
088c64f8 JH |
434 | dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__, |
435 | rb->index, urb->actual_length); | |
436 | set_bit(rb->index, &acm->read_urbs_free); | |
61a87adf | 437 | |
088c64f8 JH |
438 | if (!acm->dev) { |
439 | dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__); | |
440 | return; | |
441 | } | |
442 | usb_mark_last_busy(acm->dev); | |
61a87adf | 443 | |
088c64f8 JH |
444 | if (urb->status) { |
445 | dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n", | |
446 | __func__, urb->status); | |
447 | return; | |
61a87adf | 448 | } |
088c64f8 JH |
449 | acm_process_read_urb(acm, urb); |
450 | ||
451 | /* throttle device if requested by tty */ | |
11ea859d | 452 | spin_lock_irqsave(&acm->read_lock, flags); |
088c64f8 JH |
453 | acm->throttled = acm->throttle_req; |
454 | if (!acm->throttled && !acm->susp_count) { | |
455 | spin_unlock_irqrestore(&acm->read_lock, flags); | |
456 | acm_submit_read_urb(acm, rb->index, GFP_ATOMIC); | |
457 | } else { | |
458 | spin_unlock_irqrestore(&acm->read_lock, flags); | |
459 | } | |
1da177e4 LT |
460 | } |
461 | ||
462 | /* data interface wrote those outgoing bytes */ | |
7d12e780 | 463 | static void acm_write_bulk(struct urb *urb) |
1da177e4 | 464 | { |
cdc97792 | 465 | struct acm_wb *wb = urb->context; |
e5fbab51 | 466 | struct acm *acm = wb->instance; |
ad0b65ef | 467 | unsigned long flags; |
1da177e4 | 468 | |
4fa4626c JH |
469 | if (urb->status || (urb->actual_length != urb->transfer_buffer_length)) |
470 | dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n", | |
1d9846e5 | 471 | __func__, |
e5fbab51 DB |
472 | urb->actual_length, |
473 | urb->transfer_buffer_length, | |
474 | urb->status); | |
1da177e4 | 475 | |
ad0b65ef | 476 | spin_lock_irqsave(&acm->write_lock, flags); |
e4cf3aa8 | 477 | acm_write_done(acm, wb); |
ad0b65ef | 478 | spin_unlock_irqrestore(&acm->write_lock, flags); |
99823f45 | 479 | schedule_work(&acm->work); |
1da177e4 LT |
480 | } |
481 | ||
c4028958 | 482 | static void acm_softint(struct work_struct *work) |
1da177e4 | 483 | { |
c4028958 | 484 | struct acm *acm = container_of(work, struct acm, work); |
10077d4a | 485 | struct tty_struct *tty; |
e5fbab51 | 486 | |
1d9846e5 JH |
487 | dev_vdbg(&acm->data->dev, "%s\n", __func__); |
488 | ||
10077d4a | 489 | tty = tty_port_tty_get(&acm->port); |
15e5bee3 JH |
490 | if (!tty) |
491 | return; | |
10077d4a AC |
492 | tty_wakeup(tty); |
493 | tty_kref_put(tty); | |
1da177e4 LT |
494 | } |
495 | ||
496 | /* | |
497 | * TTY handlers | |
498 | */ | |
499 | ||
7fb57a01 | 500 | static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty) |
1da177e4 LT |
501 | { |
502 | struct acm *acm; | |
7fb57a01 | 503 | int retval; |
1da177e4 | 504 | |
7fb57a01 | 505 | dev_dbg(tty->dev, "%s\n", __func__); |
1da177e4 | 506 | |
7fb57a01 HS |
507 | acm = acm_get_by_index(tty->index); |
508 | if (!acm) | |
509 | return -ENODEV; | |
a5cc7ef9 | 510 | |
7fb57a01 HS |
511 | retval = tty_init_termios(tty); |
512 | if (retval) | |
513 | goto error_init_termios; | |
10077d4a | 514 | |
1da177e4 | 515 | tty->driver_data = acm; |
1da177e4 | 516 | |
7fb57a01 HS |
517 | /* Final install (we use the default method) */ |
518 | tty_driver_kref_get(driver); | |
519 | tty->count++; | |
520 | driver->ttys[tty->index] = tty; | |
521 | ||
522 | return 0; | |
523 | ||
524 | error_init_termios: | |
525 | tty_port_put(&acm->port); | |
526 | return retval; | |
527 | } | |
528 | ||
529 | static int acm_tty_open(struct tty_struct *tty, struct file *filp) | |
530 | { | |
531 | struct acm *acm = tty->driver_data; | |
532 | ||
533 | dev_dbg(tty->dev, "%s\n", __func__); | |
534 | ||
535 | return tty_port_open(&acm->port, tty, filp); | |
536 | } | |
537 | ||
538 | static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) | |
539 | { | |
540 | struct acm *acm = container_of(port, struct acm, port); | |
541 | int retval = -ENODEV; | |
542 | ||
543 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
1365baf7 ON |
544 | |
545 | mutex_lock(&acm->mutex); | |
7fb57a01 HS |
546 | if (acm->disconnected) |
547 | goto disconnected; | |
548 | ||
549 | retval = usb_autopm_get_interface(acm->control); | |
550 | if (retval) | |
551 | goto error_get_interface; | |
552 | ||
553 | /* | |
554 | * FIXME: Why do we need this? Allocating 64K of physically contiguous | |
555 | * memory is really nasty... | |
556 | */ | |
557 | set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); | |
558 | acm->control->needs_remote_wakeup = 1; | |
1365baf7 | 559 | |
1da177e4 LT |
560 | acm->ctrlurb->dev = acm->dev; |
561 | if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) { | |
a5cc7ef9 JH |
562 | dev_err(&acm->control->dev, |
563 | "%s - usb_submit_urb(ctrl irq) failed\n", __func__); | |
7fb57a01 | 564 | goto error_submit_urb; |
1da177e4 LT |
565 | } |
566 | ||
7fb57a01 HS |
567 | acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS; |
568 | if (acm_set_control(acm, acm->ctrlout) < 0 && | |
ca79b7b4 | 569 | (acm->ctrl_caps & USB_CDC_CAP_LINE)) |
7fb57a01 | 570 | goto error_set_control; |
10077d4a | 571 | |
11ea859d | 572 | usb_autopm_put_interface(acm->control); |
1da177e4 | 573 | |
088c64f8 | 574 | if (acm_submit_read_urbs(acm, GFP_KERNEL)) |
7fb57a01 | 575 | goto error_submit_read_urbs; |
2b626dc1 | 576 | |
1365baf7 | 577 | mutex_unlock(&acm->mutex); |
1da177e4 | 578 | |
7fb57a01 HS |
579 | return 0; |
580 | ||
581 | error_submit_read_urbs: | |
582 | acm->ctrlout = 0; | |
583 | acm_set_control(acm, acm->ctrlout); | |
584 | error_set_control: | |
585 | usb_kill_urb(acm->ctrlurb); | |
586 | error_submit_urb: | |
2b626dc1 | 587 | usb_autopm_put_interface(acm->control); |
7fb57a01 HS |
588 | error_get_interface: |
589 | disconnected: | |
590 | mutex_unlock(&acm->mutex); | |
591 | return retval; | |
1da177e4 LT |
592 | } |
593 | ||
7fb57a01 | 594 | static void acm_port_destruct(struct tty_port *port) |
83ef344a | 595 | { |
7fb57a01 HS |
596 | struct acm *acm = container_of(port, struct acm, port); |
597 | ||
598 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
61a87adf | 599 | |
83ef344a | 600 | tty_unregister_device(acm_tty_driver, acm->minor); |
7fb57a01 | 601 | acm_release_minor(acm); |
83ef344a | 602 | usb_put_intf(acm->control); |
c4cabd28 | 603 | kfree(acm->country_codes); |
83ef344a | 604 | kfree(acm); |
605 | } | |
606 | ||
7fb57a01 | 607 | static void acm_port_shutdown(struct tty_port *port) |
10077d4a | 608 | { |
7fb57a01 | 609 | struct acm *acm = container_of(port, struct acm, port); |
dab54c9f JH |
610 | int i; |
611 | ||
7fb57a01 HS |
612 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
613 | ||
614 | mutex_lock(&acm->mutex); | |
615 | if (!acm->disconnected) { | |
10077d4a AC |
616 | usb_autopm_get_interface(acm->control); |
617 | acm_set_control(acm, acm->ctrlout = 0); | |
10077d4a AC |
618 | usb_kill_urb(acm->ctrlurb); |
619 | for (i = 0; i < ACM_NW; i++) | |
620 | usb_kill_urb(acm->wb[i].urb); | |
dab54c9f | 621 | for (i = 0; i < acm->rx_buflimit; i++) |
088c64f8 | 622 | usb_kill_urb(acm->read_urbs[i]); |
10077d4a AC |
623 | acm->control->needs_remote_wakeup = 0; |
624 | usb_autopm_put_interface(acm->control); | |
625 | } | |
7fb57a01 HS |
626 | mutex_unlock(&acm->mutex); |
627 | } | |
628 | ||
629 | static void acm_tty_cleanup(struct tty_struct *tty) | |
630 | { | |
631 | struct acm *acm = tty->driver_data; | |
632 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
633 | tty_port_put(&acm->port); | |
10077d4a AC |
634 | } |
635 | ||
636 | static void acm_tty_hangup(struct tty_struct *tty) | |
637 | { | |
638 | struct acm *acm = tty->driver_data; | |
7fb57a01 | 639 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
10077d4a | 640 | tty_port_hangup(&acm->port); |
10077d4a AC |
641 | } |
642 | ||
1da177e4 LT |
643 | static void acm_tty_close(struct tty_struct *tty, struct file *filp) |
644 | { | |
645 | struct acm *acm = tty->driver_data; | |
7fb57a01 HS |
646 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
647 | tty_port_close(&acm->port, tty, filp); | |
1da177e4 LT |
648 | } |
649 | ||
6e47e069 AC |
650 | static int acm_tty_write(struct tty_struct *tty, |
651 | const unsigned char *buf, int count) | |
1da177e4 LT |
652 | { |
653 | struct acm *acm = tty->driver_data; | |
654 | int stat; | |
884b600f ON |
655 | unsigned long flags; |
656 | int wbn; | |
657 | struct acm_wb *wb; | |
658 | ||
1da177e4 LT |
659 | if (!count) |
660 | return 0; | |
661 | ||
5e9e75f8 | 662 | dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count); |
a5cc7ef9 | 663 | |
884b600f | 664 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 AC |
665 | wbn = acm_wb_alloc(acm); |
666 | if (wbn < 0) { | |
884b600f | 667 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
668 | return 0; |
669 | } | |
670 | wb = &acm->wb[wbn]; | |
1da177e4 | 671 | |
884b600f | 672 | count = (count > acm->writesize) ? acm->writesize : count; |
5e9e75f8 | 673 | dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count); |
884b600f ON |
674 | memcpy(wb->buf, buf, count); |
675 | wb->len = count; | |
676 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
1da177e4 | 677 | |
6e47e069 AC |
678 | stat = acm_write_start(acm, wbn); |
679 | if (stat < 0) | |
1da177e4 | 680 | return stat; |
1da177e4 LT |
681 | return count; |
682 | } | |
683 | ||
684 | static int acm_tty_write_room(struct tty_struct *tty) | |
685 | { | |
686 | struct acm *acm = tty->driver_data; | |
884b600f ON |
687 | /* |
688 | * Do not let the line discipline to know that we have a reserve, | |
689 | * or it might get too enthusiastic. | |
690 | */ | |
934da463 | 691 | return acm_wb_is_avail(acm) ? acm->writesize : 0; |
1da177e4 LT |
692 | } |
693 | ||
694 | static int acm_tty_chars_in_buffer(struct tty_struct *tty) | |
695 | { | |
696 | struct acm *acm = tty->driver_data; | |
7fb57a01 HS |
697 | /* |
698 | * if the device was unplugged then any remaining characters fell out | |
699 | * of the connector ;) | |
700 | */ | |
701 | if (acm->disconnected) | |
23198fda | 702 | return 0; |
884b600f ON |
703 | /* |
704 | * This is inaccurate (overcounts), but it works. | |
705 | */ | |
86478944 | 706 | return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; |
1da177e4 LT |
707 | } |
708 | ||
709 | static void acm_tty_throttle(struct tty_struct *tty) | |
710 | { | |
711 | struct acm *acm = tty->driver_data; | |
088c64f8 | 712 | |
088c64f8 JH |
713 | spin_lock_irq(&acm->read_lock); |
714 | acm->throttle_req = 1; | |
715 | spin_unlock_irq(&acm->read_lock); | |
1da177e4 LT |
716 | } |
717 | ||
718 | static void acm_tty_unthrottle(struct tty_struct *tty) | |
719 | { | |
720 | struct acm *acm = tty->driver_data; | |
088c64f8 JH |
721 | unsigned int was_throttled; |
722 | ||
088c64f8 JH |
723 | spin_lock_irq(&acm->read_lock); |
724 | was_throttled = acm->throttled; | |
725 | acm->throttled = 0; | |
726 | acm->throttle_req = 0; | |
727 | spin_unlock_irq(&acm->read_lock); | |
728 | ||
729 | if (was_throttled) | |
730 | acm_submit_read_urbs(acm, GFP_KERNEL); | |
1da177e4 LT |
731 | } |
732 | ||
9e98966c | 733 | static int acm_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
734 | { |
735 | struct acm *acm = tty->driver_data; | |
9e98966c | 736 | int retval; |
7fb57a01 | 737 | |
9e98966c AC |
738 | retval = acm_send_break(acm, state ? 0xffff : 0); |
739 | if (retval < 0) | |
a5cc7ef9 JH |
740 | dev_dbg(&acm->control->dev, "%s - send break failed\n", |
741 | __func__); | |
9e98966c | 742 | return retval; |
1da177e4 LT |
743 | } |
744 | ||
60b33c13 | 745 | static int acm_tty_tiocmget(struct tty_struct *tty) |
1da177e4 LT |
746 | { |
747 | struct acm *acm = tty->driver_data; | |
748 | ||
1da177e4 LT |
749 | return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) | |
750 | (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) | | |
751 | (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) | | |
752 | (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) | | |
753 | (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) | | |
754 | TIOCM_CTS; | |
755 | } | |
756 | ||
20b9d177 | 757 | static int acm_tty_tiocmset(struct tty_struct *tty, |
1da177e4 LT |
758 | unsigned int set, unsigned int clear) |
759 | { | |
760 | struct acm *acm = tty->driver_data; | |
761 | unsigned int newctrl; | |
762 | ||
1da177e4 | 763 | newctrl = acm->ctrlout; |
6e47e069 AC |
764 | set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | |
765 | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
766 | clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | | |
767 | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
1da177e4 LT |
768 | |
769 | newctrl = (newctrl & ~clear) | set; | |
770 | ||
771 | if (acm->ctrlout == newctrl) | |
772 | return 0; | |
773 | return acm_set_control(acm, acm->ctrlout = newctrl); | |
774 | } | |
775 | ||
6caa76b7 | 776 | static int acm_tty_ioctl(struct tty_struct *tty, |
6e47e069 | 777 | unsigned int cmd, unsigned long arg) |
1da177e4 | 778 | { |
1da177e4 LT |
779 | return -ENOIOCTLCMD; |
780 | } | |
781 | ||
4c4c9432 | 782 | static const __u32 acm_tty_speed[] = { |
1da177e4 LT |
783 | 0, 50, 75, 110, 134, 150, 200, 300, 600, |
784 | 1200, 1800, 2400, 4800, 9600, 19200, 38400, | |
785 | 57600, 115200, 230400, 460800, 500000, 576000, | |
786 | 921600, 1000000, 1152000, 1500000, 2000000, | |
787 | 2500000, 3000000, 3500000, 4000000 | |
788 | }; | |
789 | ||
4c4c9432 | 790 | static const __u8 acm_tty_size[] = { |
1da177e4 LT |
791 | 5, 6, 7, 8 |
792 | }; | |
793 | ||
6e47e069 AC |
794 | static void acm_tty_set_termios(struct tty_struct *tty, |
795 | struct ktermios *termios_old) | |
1da177e4 LT |
796 | { |
797 | struct acm *acm = tty->driver_data; | |
606d099c | 798 | struct ktermios *termios = tty->termios; |
1da177e4 LT |
799 | struct usb_cdc_line_coding newline; |
800 | int newctrl = acm->ctrlout; | |
801 | ||
9b80fee1 | 802 | newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty)); |
1da177e4 LT |
803 | newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; |
804 | newline.bParityType = termios->c_cflag & PARENB ? | |
6e47e069 AC |
805 | (termios->c_cflag & PARODD ? 1 : 2) + |
806 | (termios->c_cflag & CMSPAR ? 2 : 0) : 0; | |
1da177e4 | 807 | newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4]; |
6e47e069 | 808 | /* FIXME: Needs to clear unsupported bits in the termios */ |
1da177e4 LT |
809 | acm->clocal = ((termios->c_cflag & CLOCAL) != 0); |
810 | ||
811 | if (!newline.dwDTERate) { | |
812 | newline.dwDTERate = acm->line.dwDTERate; | |
813 | newctrl &= ~ACM_CTRL_DTR; | |
6e47e069 AC |
814 | } else |
815 | newctrl |= ACM_CTRL_DTR; | |
1da177e4 LT |
816 | |
817 | if (newctrl != acm->ctrlout) | |
818 | acm_set_control(acm, acm->ctrlout = newctrl); | |
819 | ||
820 | if (memcmp(&acm->line, &newline, sizeof newline)) { | |
821 | memcpy(&acm->line, &newline, sizeof newline); | |
a5cc7ef9 JH |
822 | dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n", |
823 | __func__, | |
824 | le32_to_cpu(newline.dwDTERate), | |
1da177e4 LT |
825 | newline.bCharFormat, newline.bParityType, |
826 | newline.bDataBits); | |
827 | acm_set_line(acm, &acm->line); | |
828 | } | |
829 | } | |
830 | ||
7fb57a01 HS |
831 | static const struct tty_port_operations acm_port_ops = { |
832 | .shutdown = acm_port_shutdown, | |
833 | .activate = acm_port_activate, | |
834 | .destruct = acm_port_destruct, | |
835 | }; | |
836 | ||
1da177e4 LT |
837 | /* |
838 | * USB probe and disconnect routines. | |
839 | */ | |
840 | ||
830f4021 | 841 | /* Little helpers: write/read buffers free */ |
884b600f ON |
842 | static void acm_write_buffers_free(struct acm *acm) |
843 | { | |
844 | int i; | |
845 | struct acm_wb *wb; | |
a496c64f | 846 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); |
884b600f | 847 | |
6e47e069 | 848 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) |
997ea58e | 849 | usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah); |
884b600f ON |
850 | } |
851 | ||
830f4021 ON |
852 | static void acm_read_buffers_free(struct acm *acm) |
853 | { | |
854 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); | |
dab54c9f | 855 | int i; |
830f4021 | 856 | |
dab54c9f | 857 | for (i = 0; i < acm->rx_buflimit; i++) |
997ea58e | 858 | usb_free_coherent(usb_dev, acm->readsize, |
088c64f8 | 859 | acm->read_buffers[i].base, acm->read_buffers[i].dma); |
830f4021 ON |
860 | } |
861 | ||
884b600f ON |
862 | /* Little helper: write buffers allocate */ |
863 | static int acm_write_buffers_alloc(struct acm *acm) | |
864 | { | |
865 | int i; | |
866 | struct acm_wb *wb; | |
867 | ||
86478944 | 868 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { |
997ea58e | 869 | wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL, |
884b600f ON |
870 | &wb->dmah); |
871 | if (!wb->buf) { | |
872 | while (i != 0) { | |
873 | --i; | |
874 | --wb; | |
997ea58e | 875 | usb_free_coherent(acm->dev, acm->writesize, |
884b600f ON |
876 | wb->buf, wb->dmah); |
877 | } | |
878 | return -ENOMEM; | |
879 | } | |
880 | } | |
881 | return 0; | |
882 | } | |
883 | ||
10077d4a AC |
884 | static int acm_probe(struct usb_interface *intf, |
885 | const struct usb_device_id *id) | |
1da177e4 LT |
886 | { |
887 | struct usb_cdc_union_desc *union_header = NULL; | |
c4cabd28 | 888 | struct usb_cdc_country_functional_desc *cfd = NULL; |
c6dbf554 | 889 | unsigned char *buffer = intf->altsetting->extra; |
1da177e4 LT |
890 | int buflen = intf->altsetting->extralen; |
891 | struct usb_interface *control_interface; | |
892 | struct usb_interface *data_interface; | |
a2bfb4a3 ON |
893 | struct usb_endpoint_descriptor *epctrl = NULL; |
894 | struct usb_endpoint_descriptor *epread = NULL; | |
895 | struct usb_endpoint_descriptor *epwrite = NULL; | |
1da177e4 LT |
896 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
897 | struct acm *acm; | |
898 | int minor; | |
6e47e069 | 899 | int ctrlsize, readsize; |
1da177e4 LT |
900 | u8 *buf; |
901 | u8 ac_management_function = 0; | |
902 | u8 call_management_function = 0; | |
903 | int call_interface_num = -1; | |
fd5054c1 | 904 | int data_interface_num = -1; |
1da177e4 | 905 | unsigned long quirks; |
86478944 | 906 | int num_rx_buf; |
61a87adf | 907 | int i; |
a2bfb4a3 | 908 | int combined_interfaces = 0; |
1da177e4 | 909 | |
86478944 | 910 | /* normal quirks */ |
1da177e4 | 911 | quirks = (unsigned long)id->driver_info; |
86478944 ON |
912 | num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; |
913 | ||
914 | /* handle quirks deadly to normal probing*/ | |
1da177e4 LT |
915 | if (quirks == NO_UNION_NORMAL) { |
916 | data_interface = usb_ifnum_to_if(usb_dev, 1); | |
917 | control_interface = usb_ifnum_to_if(usb_dev, 0); | |
918 | goto skip_normal_probe; | |
919 | } | |
6e47e069 | 920 | |
1da177e4 LT |
921 | /* normal probing*/ |
922 | if (!buffer) { | |
9908a32e | 923 | dev_err(&intf->dev, "Weird descriptor references\n"); |
1da177e4 LT |
924 | return -EINVAL; |
925 | } | |
926 | ||
927 | if (!buflen) { | |
577045c0 TG |
928 | if (intf->cur_altsetting->endpoint && |
929 | intf->cur_altsetting->endpoint->extralen && | |
6e47e069 AC |
930 | intf->cur_altsetting->endpoint->extra) { |
931 | dev_dbg(&intf->dev, | |
932 | "Seeking extra descriptors on endpoint\n"); | |
1da177e4 LT |
933 | buflen = intf->cur_altsetting->endpoint->extralen; |
934 | buffer = intf->cur_altsetting->endpoint->extra; | |
935 | } else { | |
9908a32e GKH |
936 | dev_err(&intf->dev, |
937 | "Zero length descriptor references\n"); | |
1da177e4 LT |
938 | return -EINVAL; |
939 | } | |
940 | } | |
941 | ||
942 | while (buflen > 0) { | |
6e47e069 | 943 | if (buffer[1] != USB_DT_CS_INTERFACE) { |
9908a32e | 944 | dev_err(&intf->dev, "skipping garbage\n"); |
1da177e4 LT |
945 | goto next_desc; |
946 | } | |
947 | ||
6e47e069 AC |
948 | switch (buffer[2]) { |
949 | case USB_CDC_UNION_TYPE: /* we've found it */ | |
950 | if (union_header) { | |
951 | dev_err(&intf->dev, "More than one " | |
952 | "union descriptor, skipping ...\n"); | |
953 | goto next_desc; | |
1da177e4 | 954 | } |
6e47e069 AC |
955 | union_header = (struct usb_cdc_union_desc *)buffer; |
956 | break; | |
957 | case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/ | |
958 | cfd = (struct usb_cdc_country_functional_desc *)buffer; | |
959 | break; | |
960 | case USB_CDC_HEADER_TYPE: /* maybe check version */ | |
961 | break; /* for now we ignore it */ | |
962 | case USB_CDC_ACM_TYPE: | |
963 | ac_management_function = buffer[3]; | |
964 | break; | |
965 | case USB_CDC_CALL_MANAGEMENT_TYPE: | |
966 | call_management_function = buffer[3]; | |
967 | call_interface_num = buffer[4]; | |
ce126644 | 968 | if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3) |
6e47e069 AC |
969 | dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n"); |
970 | break; | |
971 | default: | |
972 | /* there are LOTS more CDC descriptors that | |
973 | * could legitimately be found here. | |
974 | */ | |
975 | dev_dbg(&intf->dev, "Ignoring descriptor: " | |
976 | "type %02x, length %d\n", | |
977 | buffer[2], buffer[0]); | |
978 | break; | |
979 | } | |
1da177e4 LT |
980 | next_desc: |
981 | buflen -= buffer[0]; | |
982 | buffer += buffer[0]; | |
983 | } | |
984 | ||
985 | if (!union_header) { | |
986 | if (call_interface_num > 0) { | |
6e47e069 | 987 | dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n"); |
fd5054c1 ES |
988 | /* quirks for Droids MuIn LCD */ |
989 | if (quirks & NO_DATA_INTERFACE) | |
990 | data_interface = usb_ifnum_to_if(usb_dev, 0); | |
991 | else | |
992 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num)); | |
1da177e4 LT |
993 | control_interface = intf; |
994 | } else { | |
a2bfb4a3 ON |
995 | if (intf->cur_altsetting->desc.bNumEndpoints != 3) { |
996 | dev_dbg(&intf->dev,"No union descriptor, giving up\n"); | |
997 | return -ENODEV; | |
998 | } else { | |
999 | dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n"); | |
1000 | combined_interfaces = 1; | |
1001 | control_interface = data_interface = intf; | |
1002 | goto look_for_collapsed_interface; | |
1003 | } | |
1da177e4 LT |
1004 | } |
1005 | } else { | |
1006 | control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); | |
1007 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0)); | |
1008 | if (!control_interface || !data_interface) { | |
6e47e069 | 1009 | dev_dbg(&intf->dev, "no interfaces\n"); |
1da177e4 LT |
1010 | return -ENODEV; |
1011 | } | |
1012 | } | |
6e47e069 | 1013 | |
1da177e4 | 1014 | if (data_interface_num != call_interface_num) |
6e47e069 | 1015 | dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n"); |
1da177e4 | 1016 | |
a2bfb4a3 ON |
1017 | if (control_interface == data_interface) { |
1018 | /* some broken devices designed for windows work this way */ | |
1019 | dev_warn(&intf->dev,"Control and data interfaces are not separated!\n"); | |
1020 | combined_interfaces = 1; | |
1021 | /* a popular other OS doesn't use it */ | |
1022 | quirks |= NO_CAP_LINE; | |
1023 | if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) { | |
1024 | dev_err(&intf->dev, "This needs exactly 3 endpoints\n"); | |
1025 | return -EINVAL; | |
1026 | } | |
1027 | look_for_collapsed_interface: | |
1028 | for (i = 0; i < 3; i++) { | |
1029 | struct usb_endpoint_descriptor *ep; | |
1030 | ep = &data_interface->cur_altsetting->endpoint[i].desc; | |
1031 | ||
1032 | if (usb_endpoint_is_int_in(ep)) | |
1033 | epctrl = ep; | |
1034 | else if (usb_endpoint_is_bulk_out(ep)) | |
1035 | epwrite = ep; | |
1036 | else if (usb_endpoint_is_bulk_in(ep)) | |
1037 | epread = ep; | |
1038 | else | |
1039 | return -EINVAL; | |
1040 | } | |
1041 | if (!epctrl || !epread || !epwrite) | |
1042 | return -ENODEV; | |
1043 | else | |
1044 | goto made_compressed_probe; | |
1045 | } | |
1046 | ||
1da177e4 LT |
1047 | skip_normal_probe: |
1048 | ||
1049 | /*workaround for switched interfaces */ | |
6e47e069 AC |
1050 | if (data_interface->cur_altsetting->desc.bInterfaceClass |
1051 | != CDC_DATA_INTERFACE_TYPE) { | |
1052 | if (control_interface->cur_altsetting->desc.bInterfaceClass | |
1053 | == CDC_DATA_INTERFACE_TYPE) { | |
1da177e4 | 1054 | struct usb_interface *t; |
6e47e069 AC |
1055 | dev_dbg(&intf->dev, |
1056 | "Your device has switched interfaces.\n"); | |
1da177e4 LT |
1057 | t = control_interface; |
1058 | control_interface = data_interface; | |
1059 | data_interface = t; | |
1060 | } else { | |
1061 | return -EINVAL; | |
1062 | } | |
1063 | } | |
74da5d68 AS |
1064 | |
1065 | /* Accept probe requests only for the control interface */ | |
a2bfb4a3 | 1066 | if (!combined_interfaces && intf != control_interface) |
74da5d68 | 1067 | return -ENODEV; |
6e47e069 | 1068 | |
a2bfb4a3 ON |
1069 | if (!combined_interfaces && usb_interface_claimed(data_interface)) { |
1070 | /* valid in this context */ | |
6e47e069 | 1071 | dev_dbg(&intf->dev, "The data interface isn't available\n"); |
1da177e4 LT |
1072 | return -EBUSY; |
1073 | } | |
1074 | ||
1075 | ||
1076 | if (data_interface->cur_altsetting->desc.bNumEndpoints < 2) | |
1077 | return -EINVAL; | |
1078 | ||
1079 | epctrl = &control_interface->cur_altsetting->endpoint[0].desc; | |
1080 | epread = &data_interface->cur_altsetting->endpoint[0].desc; | |
1081 | epwrite = &data_interface->cur_altsetting->endpoint[1].desc; | |
1082 | ||
1083 | ||
1084 | /* workaround for switched endpoints */ | |
45aea704 | 1085 | if (!usb_endpoint_dir_in(epread)) { |
1da177e4 LT |
1086 | /* descriptors are swapped */ |
1087 | struct usb_endpoint_descriptor *t; | |
6e47e069 AC |
1088 | dev_dbg(&intf->dev, |
1089 | "The data interface has switched endpoints\n"); | |
1da177e4 LT |
1090 | t = epread; |
1091 | epread = epwrite; | |
1092 | epwrite = t; | |
1093 | } | |
a2bfb4a3 | 1094 | made_compressed_probe: |
a5cc7ef9 | 1095 | dev_dbg(&intf->dev, "interfaces are valid\n"); |
1da177e4 | 1096 | |
6e47e069 AC |
1097 | acm = kzalloc(sizeof(struct acm), GFP_KERNEL); |
1098 | if (acm == NULL) { | |
255ab56c | 1099 | dev_err(&intf->dev, "out of memory (acm kzalloc)\n"); |
1da177e4 LT |
1100 | goto alloc_fail; |
1101 | } | |
1da177e4 | 1102 | |
7fb57a01 HS |
1103 | minor = acm_alloc_minor(acm); |
1104 | if (minor == ACM_TTY_MINORS) { | |
1105 | dev_err(&intf->dev, "no more free acm devices\n"); | |
1106 | kfree(acm); | |
1107 | return -ENODEV; | |
1108 | } | |
1109 | ||
29cc8897 KM |
1110 | ctrlsize = usb_endpoint_maxp(epctrl); |
1111 | readsize = usb_endpoint_maxp(epread) * | |
6e47e069 | 1112 | (quirks == SINGLE_RX_URB ? 1 : 2); |
a2bfb4a3 | 1113 | acm->combined_interfaces = combined_interfaces; |
29cc8897 | 1114 | acm->writesize = usb_endpoint_maxp(epwrite) * 20; |
1da177e4 LT |
1115 | acm->control = control_interface; |
1116 | acm->data = data_interface; | |
1117 | acm->minor = minor; | |
1118 | acm->dev = usb_dev; | |
1119 | acm->ctrl_caps = ac_management_function; | |
a2bfb4a3 ON |
1120 | if (quirks & NO_CAP_LINE) |
1121 | acm->ctrl_caps &= ~USB_CDC_CAP_LINE; | |
1da177e4 LT |
1122 | acm->ctrlsize = ctrlsize; |
1123 | acm->readsize = readsize; | |
86478944 | 1124 | acm->rx_buflimit = num_rx_buf; |
c4028958 | 1125 | INIT_WORK(&acm->work, acm_softint); |
884b600f | 1126 | spin_lock_init(&acm->write_lock); |
61a87adf | 1127 | spin_lock_init(&acm->read_lock); |
1365baf7 | 1128 | mutex_init(&acm->mutex); |
61a87adf | 1129 | acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); |
cf7fdd57 ON |
1130 | acm->is_int_ep = usb_endpoint_xfer_int(epread); |
1131 | if (acm->is_int_ep) | |
1132 | acm->bInterval = epread->bInterval; | |
739e0285 AC |
1133 | tty_port_init(&acm->port); |
1134 | acm->port.ops = &acm_port_ops; | |
1da177e4 | 1135 | |
997ea58e | 1136 | buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); |
1da177e4 | 1137 | if (!buf) { |
255ab56c | 1138 | dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n"); |
1da177e4 LT |
1139 | goto alloc_fail2; |
1140 | } | |
1141 | acm->ctrl_buffer = buf; | |
1142 | ||
884b600f | 1143 | if (acm_write_buffers_alloc(acm) < 0) { |
255ab56c | 1144 | dev_err(&intf->dev, "out of memory (write buffer alloc)\n"); |
1da177e4 LT |
1145 | goto alloc_fail4; |
1146 | } | |
1da177e4 LT |
1147 | |
1148 | acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); | |
1149 | if (!acm->ctrlurb) { | |
255ab56c | 1150 | dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n"); |
1da177e4 LT |
1151 | goto alloc_fail5; |
1152 | } | |
86478944 | 1153 | for (i = 0; i < num_rx_buf; i++) { |
088c64f8 JH |
1154 | struct acm_rb *rb = &(acm->read_buffers[i]); |
1155 | struct urb *urb; | |
61a87adf | 1156 | |
74f5e1ba JH |
1157 | rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, |
1158 | &rb->dma); | |
1159 | if (!rb->base) { | |
1160 | dev_err(&intf->dev, "out of memory " | |
1161 | "(read bufs usb_alloc_coherent)\n"); | |
1162 | goto alloc_fail6; | |
1163 | } | |
088c64f8 JH |
1164 | rb->index = i; |
1165 | rb->instance = acm; | |
74f5e1ba | 1166 | |
088c64f8 JH |
1167 | urb = usb_alloc_urb(0, GFP_KERNEL); |
1168 | if (!urb) { | |
255ab56c | 1169 | dev_err(&intf->dev, |
6e47e069 | 1170 | "out of memory (read urbs usb_alloc_urb)\n"); |
c2572b78 | 1171 | goto alloc_fail6; |
61a87adf | 1172 | } |
088c64f8 JH |
1173 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1174 | urb->transfer_dma = rb->dma; | |
1175 | if (acm->is_int_ep) { | |
1176 | usb_fill_int_urb(urb, acm->dev, | |
1177 | acm->rx_endpoint, | |
1178 | rb->base, | |
1179 | acm->readsize, | |
1180 | acm_read_bulk_callback, rb, | |
1181 | acm->bInterval); | |
1182 | } else { | |
1183 | usb_fill_bulk_urb(urb, acm->dev, | |
1184 | acm->rx_endpoint, | |
1185 | rb->base, | |
1186 | acm->readsize, | |
1187 | acm_read_bulk_callback, rb); | |
1188 | } | |
61a87adf | 1189 | |
088c64f8 JH |
1190 | acm->read_urbs[i] = urb; |
1191 | __set_bit(i, &acm->read_urbs_free); | |
61a87adf | 1192 | } |
6e47e069 | 1193 | for (i = 0; i < ACM_NW; i++) { |
e4cf3aa8 DE |
1194 | struct acm_wb *snd = &(acm->wb[i]); |
1195 | ||
6e47e069 AC |
1196 | snd->urb = usb_alloc_urb(0, GFP_KERNEL); |
1197 | if (snd->urb == NULL) { | |
255ab56c | 1198 | dev_err(&intf->dev, |
59d7fec7 | 1199 | "out of memory (write urbs usb_alloc_urb)\n"); |
74f5e1ba | 1200 | goto alloc_fail7; |
e4cf3aa8 DE |
1201 | } |
1202 | ||
5186ffee AL |
1203 | if (usb_endpoint_xfer_int(epwrite)) |
1204 | usb_fill_int_urb(snd->urb, usb_dev, | |
1205 | usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), | |
1206 | NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval); | |
1207 | else | |
1208 | usb_fill_bulk_urb(snd->urb, usb_dev, | |
1209 | usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), | |
1210 | NULL, acm->writesize, acm_write_bulk, snd); | |
e4cf3aa8 DE |
1211 | snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1212 | snd->instance = acm; | |
1da177e4 LT |
1213 | } |
1214 | ||
6e47e069 | 1215 | usb_set_intfdata(intf, acm); |
c4cabd28 ON |
1216 | |
1217 | i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); | |
1218 | if (i < 0) | |
74f5e1ba | 1219 | goto alloc_fail7; |
c4cabd28 ON |
1220 | |
1221 | if (cfd) { /* export the country data */ | |
1222 | acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); | |
1223 | if (!acm->country_codes) | |
1224 | goto skip_countries; | |
1225 | acm->country_code_size = cfd->bLength - 4; | |
6e47e069 AC |
1226 | memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, |
1227 | cfd->bLength - 4); | |
c4cabd28 ON |
1228 | acm->country_rel_date = cfd->iCountryCodeRelDate; |
1229 | ||
1230 | i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); | |
1231 | if (i < 0) { | |
1232 | kfree(acm->country_codes); | |
e7c8e860 JL |
1233 | acm->country_codes = NULL; |
1234 | acm->country_code_size = 0; | |
c4cabd28 ON |
1235 | goto skip_countries; |
1236 | } | |
1237 | ||
6e47e069 AC |
1238 | i = device_create_file(&intf->dev, |
1239 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1240 | if (i < 0) { |
c2572b78 | 1241 | device_remove_file(&intf->dev, &dev_attr_wCountryCodes); |
c4cabd28 | 1242 | kfree(acm->country_codes); |
e7c8e860 JL |
1243 | acm->country_codes = NULL; |
1244 | acm->country_code_size = 0; | |
c4cabd28 ON |
1245 | goto skip_countries; |
1246 | } | |
1247 | } | |
1248 | ||
1249 | skip_countries: | |
6e47e069 | 1250 | usb_fill_int_urb(acm->ctrlurb, usb_dev, |
a2bfb4a3 ON |
1251 | usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), |
1252 | acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, | |
1253 | /* works around buggy devices */ | |
1254 | epctrl->bInterval ? epctrl->bInterval : 0xff); | |
1da177e4 LT |
1255 | acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1256 | acm->ctrlurb->transfer_dma = acm->ctrl_dma; | |
1257 | ||
1da177e4 LT |
1258 | dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); |
1259 | ||
1260 | acm_set_control(acm, acm->ctrlout); | |
1261 | ||
1262 | acm->line.dwDTERate = cpu_to_le32(9600); | |
1263 | acm->line.bDataBits = 8; | |
1264 | acm_set_line(acm, &acm->line); | |
1265 | ||
1266 | usb_driver_claim_interface(&acm_driver, data_interface, acm); | |
672c4e18 | 1267 | usb_set_intfdata(data_interface, acm); |
1da177e4 | 1268 | |
83ef344a | 1269 | usb_get_intf(control_interface); |
1270 | tty_register_device(acm_tty_driver, minor, &control_interface->dev); | |
1da177e4 | 1271 | |
c4cabd28 | 1272 | return 0; |
74f5e1ba | 1273 | alloc_fail7: |
e4cf3aa8 DE |
1274 | for (i = 0; i < ACM_NW; i++) |
1275 | usb_free_urb(acm->wb[i].urb); | |
c2572b78 | 1276 | alloc_fail6: |
86478944 | 1277 | for (i = 0; i < num_rx_buf; i++) |
088c64f8 | 1278 | usb_free_urb(acm->read_urbs[i]); |
74f5e1ba | 1279 | acm_read_buffers_free(acm); |
1da177e4 LT |
1280 | usb_free_urb(acm->ctrlurb); |
1281 | alloc_fail5: | |
884b600f | 1282 | acm_write_buffers_free(acm); |
1da177e4 | 1283 | alloc_fail4: |
997ea58e | 1284 | usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
1da177e4 | 1285 | alloc_fail2: |
7fb57a01 | 1286 | acm_release_minor(acm); |
1da177e4 LT |
1287 | kfree(acm); |
1288 | alloc_fail: | |
1289 | return -ENOMEM; | |
1290 | } | |
1291 | ||
1365baf7 ON |
1292 | static void stop_data_traffic(struct acm *acm) |
1293 | { | |
1294 | int i; | |
a5cc7ef9 JH |
1295 | |
1296 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
1365baf7 | 1297 | |
1365baf7 | 1298 | usb_kill_urb(acm->ctrlurb); |
6e47e069 | 1299 | for (i = 0; i < ACM_NW; i++) |
e4cf3aa8 | 1300 | usb_kill_urb(acm->wb[i].urb); |
1365baf7 | 1301 | for (i = 0; i < acm->rx_buflimit; i++) |
088c64f8 | 1302 | usb_kill_urb(acm->read_urbs[i]); |
1365baf7 ON |
1303 | |
1304 | cancel_work_sync(&acm->work); | |
1305 | } | |
1306 | ||
1da177e4 LT |
1307 | static void acm_disconnect(struct usb_interface *intf) |
1308 | { | |
c4cabd28 | 1309 | struct acm *acm = usb_get_intfdata(intf); |
1da177e4 | 1310 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
10077d4a | 1311 | struct tty_struct *tty; |
7fb57a01 HS |
1312 | int i; |
1313 | ||
1314 | dev_dbg(&intf->dev, "%s\n", __func__); | |
1da177e4 | 1315 | |
672c4e18 DB |
1316 | /* sibling interface is already cleaning up */ |
1317 | if (!acm) | |
86067eea | 1318 | return; |
672c4e18 | 1319 | |
7fb57a01 HS |
1320 | mutex_lock(&acm->mutex); |
1321 | acm->disconnected = true; | |
6e47e069 | 1322 | if (acm->country_codes) { |
74da5d68 AS |
1323 | device_remove_file(&acm->control->dev, |
1324 | &dev_attr_wCountryCodes); | |
1325 | device_remove_file(&acm->control->dev, | |
1326 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1327 | } |
74da5d68 | 1328 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); |
86067eea ON |
1329 | usb_set_intfdata(acm->control, NULL); |
1330 | usb_set_intfdata(acm->data, NULL); | |
7fb57a01 HS |
1331 | mutex_unlock(&acm->mutex); |
1332 | ||
1333 | tty = tty_port_tty_get(&acm->port); | |
1334 | if (tty) { | |
1335 | tty_vhangup(tty); | |
1336 | tty_kref_put(tty); | |
1337 | } | |
1da177e4 | 1338 | |
1365baf7 | 1339 | stop_data_traffic(acm); |
1da177e4 | 1340 | |
7fb57a01 HS |
1341 | usb_free_urb(acm->ctrlurb); |
1342 | for (i = 0; i < ACM_NW; i++) | |
1343 | usb_free_urb(acm->wb[i].urb); | |
1344 | for (i = 0; i < acm->rx_buflimit; i++) | |
1345 | usb_free_urb(acm->read_urbs[i]); | |
884b600f | 1346 | acm_write_buffers_free(acm); |
7fb57a01 | 1347 | usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
830f4021 | 1348 | acm_read_buffers_free(acm); |
1da177e4 | 1349 | |
a2bfb4a3 ON |
1350 | if (!acm->combined_interfaces) |
1351 | usb_driver_release_interface(&acm_driver, intf == acm->control ? | |
830f4021 | 1352 | acm->data : acm->control); |
1da177e4 | 1353 | |
7fb57a01 | 1354 | tty_port_put(&acm->port); |
1da177e4 LT |
1355 | } |
1356 | ||
35758589 | 1357 | #ifdef CONFIG_PM |
1365baf7 ON |
1358 | static int acm_suspend(struct usb_interface *intf, pm_message_t message) |
1359 | { | |
1360 | struct acm *acm = usb_get_intfdata(intf); | |
11ea859d ON |
1361 | int cnt; |
1362 | ||
5b1b0b81 | 1363 | if (PMSG_IS_AUTO(message)) { |
11ea859d ON |
1364 | int b; |
1365 | ||
088c64f8 JH |
1366 | spin_lock_irq(&acm->write_lock); |
1367 | b = acm->transmitting; | |
1368 | spin_unlock_irq(&acm->write_lock); | |
11ea859d ON |
1369 | if (b) |
1370 | return -EBUSY; | |
1371 | } | |
1372 | ||
1373 | spin_lock_irq(&acm->read_lock); | |
1374 | spin_lock(&acm->write_lock); | |
1375 | cnt = acm->susp_count++; | |
1376 | spin_unlock(&acm->write_lock); | |
1377 | spin_unlock_irq(&acm->read_lock); | |
1365baf7 | 1378 | |
11ea859d | 1379 | if (cnt) |
1365baf7 | 1380 | return 0; |
1365baf7 | 1381 | |
7fb57a01 | 1382 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) |
1365baf7 ON |
1383 | stop_data_traffic(acm); |
1384 | ||
1365baf7 ON |
1385 | return 0; |
1386 | } | |
1387 | ||
1388 | static int acm_resume(struct usb_interface *intf) | |
1389 | { | |
1390 | struct acm *acm = usb_get_intfdata(intf); | |
97d35f95 | 1391 | struct acm_wb *wb; |
1365baf7 | 1392 | int rv = 0; |
11ea859d | 1393 | int cnt; |
1365baf7 | 1394 | |
11ea859d ON |
1395 | spin_lock_irq(&acm->read_lock); |
1396 | acm->susp_count -= 1; | |
1397 | cnt = acm->susp_count; | |
1398 | spin_unlock_irq(&acm->read_lock); | |
1399 | ||
1400 | if (cnt) | |
1365baf7 ON |
1401 | return 0; |
1402 | ||
7fb57a01 | 1403 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) { |
1365baf7 | 1404 | rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO); |
97d35f95 ON |
1405 | |
1406 | spin_lock_irq(&acm->write_lock); | |
1407 | if (acm->delayed_wb) { | |
1408 | wb = acm->delayed_wb; | |
1409 | acm->delayed_wb = NULL; | |
1410 | spin_unlock_irq(&acm->write_lock); | |
f0730924 | 1411 | acm_start_wb(acm, wb); |
97d35f95 ON |
1412 | } else { |
1413 | spin_unlock_irq(&acm->write_lock); | |
1414 | } | |
1415 | ||
1416 | /* | |
1417 | * delayed error checking because we must | |
1418 | * do the write path at all cost | |
1419 | */ | |
1365baf7 | 1420 | if (rv < 0) |
11ea859d | 1421 | goto err_out; |
1365baf7 | 1422 | |
088c64f8 | 1423 | rv = acm_submit_read_urbs(acm, GFP_NOIO); |
1365baf7 ON |
1424 | } |
1425 | ||
1426 | err_out: | |
1365baf7 ON |
1427 | return rv; |
1428 | } | |
35758589 | 1429 | |
a91b0c50 FL |
1430 | static int acm_reset_resume(struct usb_interface *intf) |
1431 | { | |
1432 | struct acm *acm = usb_get_intfdata(intf); | |
1433 | struct tty_struct *tty; | |
1434 | ||
7fb57a01 | 1435 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) { |
a91b0c50 FL |
1436 | tty = tty_port_tty_get(&acm->port); |
1437 | if (tty) { | |
1438 | tty_hangup(tty); | |
1439 | tty_kref_put(tty); | |
1440 | } | |
1441 | } | |
7fb57a01 | 1442 | |
a91b0c50 FL |
1443 | return acm_resume(intf); |
1444 | } | |
1445 | ||
35758589 | 1446 | #endif /* CONFIG_PM */ |
c1479a92 AT |
1447 | |
1448 | #define NOKIA_PCSUITE_ACM_INFO(x) \ | |
1449 | USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \ | |
1450 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1451 | USB_CDC_ACM_PROTO_VENDOR) | |
1452 | ||
4035e456 TG |
1453 | #define SAMSUNG_PCSUITE_ACM_INFO(x) \ |
1454 | USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \ | |
1455 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1456 | USB_CDC_ACM_PROTO_VENDOR) | |
1457 | ||
1da177e4 LT |
1458 | /* |
1459 | * USB driver structure. | |
1460 | */ | |
1461 | ||
6ef4852b | 1462 | static const struct usb_device_id acm_ids[] = { |
1da177e4 LT |
1463 | /* quirky and broken devices */ |
1464 | { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ | |
1465 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1466 | }, | |
b0e2a705 AA |
1467 | { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ |
1468 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1469 | }, | |
0f9c7b4a AL |
1470 | { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ |
1471 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1472 | }, | |
8753e65e MO |
1473 | { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */ |
1474 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1475 | }, | |
91a9c921 CM |
1476 | { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */ |
1477 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1478 | }, | |
7abcf20b AC |
1479 | { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */ |
1480 | .driver_info = SINGLE_RX_URB, | |
1481 | }, | |
86478944 ON |
1482 | { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */ |
1483 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1484 | }, | |
3dd2ae81 ON |
1485 | { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ |
1486 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1487 | }, | |
9be8456c ON |
1488 | { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ |
1489 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1490 | }, | |
6149ed5e IM |
1491 | { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ |
1492 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1493 | }, | |
c8fd2c37 ES |
1494 | { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */ |
1495 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1496 | }, | |
c89c60e9 AC |
1497 | { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */ |
1498 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1499 | }, | |
cab98a0a XK |
1500 | { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */ |
1501 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1502 | }, | |
155df65a DT |
1503 | { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */ |
1504 | }, | |
6abff5dc KH |
1505 | /* Motorola H24 HSPA module: */ |
1506 | { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */ | |
1507 | { USB_DEVICE(0x22b8, 0x2d92) }, /* modem + diagnostics */ | |
1508 | { USB_DEVICE(0x22b8, 0x2d93) }, /* modem + AT port */ | |
1509 | { USB_DEVICE(0x22b8, 0x2d95) }, /* modem + AT port + diagnostics */ | |
1510 | { USB_DEVICE(0x22b8, 0x2d96) }, /* modem + NMEA */ | |
1511 | { USB_DEVICE(0x22b8, 0x2d97) }, /* modem + diagnostics + NMEA */ | |
1512 | { USB_DEVICE(0x22b8, 0x2d99) }, /* modem + AT port + NMEA */ | |
1513 | { USB_DEVICE(0x22b8, 0x2d9a) }, /* modem + AT port + diagnostics + NMEA */ | |
1514 | ||
c332b4e1 AR |
1515 | { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */ |
1516 | .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on | |
1517 | data interface instead of | |
1518 | communications interface. | |
1519 | Maybe we should define a new | |
1520 | quirk for this. */ | |
1521 | }, | |
1f17c502 KK |
1522 | { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */ |
1523 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1524 | }, | |
c3baa19b RN |
1525 | { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */ |
1526 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1527 | }, | |
9be8456c | 1528 | |
c1479a92 AT |
1529 | /* Nokia S60 phones expose two ACM channels. The first is |
1530 | * a modem and is picked up by the standard AT-command | |
1531 | * information below. The second is 'vendor-specific' but | |
1532 | * is treated as a serial device at the S60 end, so we want | |
1533 | * to expose it on Linux too. */ | |
1534 | { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */ | |
1535 | { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */ | |
1536 | { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */ | |
1537 | { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */ | |
1538 | { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */ | |
1539 | { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */ | |
1540 | { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */ | |
1541 | { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */ | |
1542 | { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */ | |
1543 | { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */ | |
1544 | { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */ | |
1545 | { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */ | |
1546 | { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */ | |
1547 | { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */ | |
1548 | { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */ | |
1549 | { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */ | |
1550 | { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */ | |
1551 | { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */ | |
1552 | { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */ | |
1553 | { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */ | |
1554 | { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */ | |
1555 | { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */ | |
1556 | { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */ | |
1557 | { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */ | |
1558 | { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */ | |
1559 | { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */ | |
1560 | { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */ | |
1561 | { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */ | |
1562 | { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */ | |
1563 | { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */ | |
1564 | { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */ | |
1565 | { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */ | |
1566 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1567 | { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */ | |
1568 | { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */ | |
1569 | { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */ | |
1570 | { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */ | |
1571 | { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */ | |
1572 | { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */ | |
1573 | { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */ | |
1574 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1575 | { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */ | |
1576 | { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */ | |
83a4eae9 | 1577 | { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */ |
4035e456 TG |
1578 | { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */ |
1579 | { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */ | |
1580 | { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */ | |
1581 | { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */ | |
1582 | { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */ | |
1583 | { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */ | |
1584 | { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */ | |
1585 | { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */ | |
1586 | { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */ | |
1587 | { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */ | |
721d92fc | 1588 | { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */ |
4061fde2 TG |
1589 | { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */ |
1590 | { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */ | |
4035e456 | 1591 | { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */ |
c1479a92 | 1592 | |
65e52f41 DP |
1593 | /* Support for Owen devices */ |
1594 | { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */ | |
1595 | ||
c1479a92 AT |
1596 | /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */ |
1597 | ||
7c5d8c39 | 1598 | /* Support Lego NXT using pbLua firmware */ |
ce126644 JC |
1599 | { USB_DEVICE(0x0694, 0xff00), |
1600 | .driver_info = NOT_A_MODEM, | |
7893afc0 | 1601 | }, |
7c5d8c39 | 1602 | |
fd5054c1 ES |
1603 | /* Support for Droids MuIn LCD */ |
1604 | { USB_DEVICE(0x04d8, 0x000b), | |
1605 | .driver_info = NO_DATA_INTERFACE, | |
1606 | }, | |
1607 | ||
5b239f0a PC |
1608 | /* control interfaces without any protocol set */ |
1609 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1610 | USB_CDC_PROTO_NONE) }, | |
1611 | ||
1da177e4 LT |
1612 | /* control interfaces with various AT-command sets */ |
1613 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1614 | USB_CDC_ACM_PROTO_AT_V25TER) }, | |
1615 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1616 | USB_CDC_ACM_PROTO_AT_PCCA101) }, | |
1617 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1618 | USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) }, | |
1619 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1620 | USB_CDC_ACM_PROTO_AT_GSM) }, | |
1621 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
6e47e069 | 1622 | USB_CDC_ACM_PROTO_AT_3G) }, |
1da177e4 LT |
1623 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
1624 | USB_CDC_ACM_PROTO_AT_CDMA) }, | |
1625 | ||
1da177e4 LT |
1626 | { } |
1627 | }; | |
1628 | ||
6e47e069 | 1629 | MODULE_DEVICE_TABLE(usb, acm_ids); |
1da177e4 LT |
1630 | |
1631 | static struct usb_driver acm_driver = { | |
1da177e4 LT |
1632 | .name = "cdc_acm", |
1633 | .probe = acm_probe, | |
1634 | .disconnect = acm_disconnect, | |
35758589 | 1635 | #ifdef CONFIG_PM |
1365baf7 ON |
1636 | .suspend = acm_suspend, |
1637 | .resume = acm_resume, | |
a91b0c50 | 1638 | .reset_resume = acm_reset_resume, |
35758589 | 1639 | #endif |
1da177e4 | 1640 | .id_table = acm_ids, |
35758589 | 1641 | #ifdef CONFIG_PM |
1365baf7 | 1642 | .supports_autosuspend = 1, |
35758589 | 1643 | #endif |
1da177e4 LT |
1644 | }; |
1645 | ||
1646 | /* | |
1647 | * TTY driver structures. | |
1648 | */ | |
1649 | ||
b68e31d0 | 1650 | static const struct tty_operations acm_ops = { |
7fb57a01 | 1651 | .install = acm_tty_install, |
1da177e4 LT |
1652 | .open = acm_tty_open, |
1653 | .close = acm_tty_close, | |
7fb57a01 | 1654 | .cleanup = acm_tty_cleanup, |
10077d4a | 1655 | .hangup = acm_tty_hangup, |
1da177e4 LT |
1656 | .write = acm_tty_write, |
1657 | .write_room = acm_tty_write_room, | |
1658 | .ioctl = acm_tty_ioctl, | |
1659 | .throttle = acm_tty_throttle, | |
1660 | .unthrottle = acm_tty_unthrottle, | |
1661 | .chars_in_buffer = acm_tty_chars_in_buffer, | |
1662 | .break_ctl = acm_tty_break_ctl, | |
1663 | .set_termios = acm_tty_set_termios, | |
1664 | .tiocmget = acm_tty_tiocmget, | |
1665 | .tiocmset = acm_tty_tiocmset, | |
1666 | }; | |
1667 | ||
1668 | /* | |
1669 | * Init / exit. | |
1670 | */ | |
1671 | ||
1672 | static int __init acm_init(void) | |
1673 | { | |
1674 | int retval; | |
1675 | acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS); | |
1676 | if (!acm_tty_driver) | |
1677 | return -ENOMEM; | |
1678 | acm_tty_driver->owner = THIS_MODULE, | |
1679 | acm_tty_driver->driver_name = "acm", | |
1680 | acm_tty_driver->name = "ttyACM", | |
1da177e4 LT |
1681 | acm_tty_driver->major = ACM_TTY_MAJOR, |
1682 | acm_tty_driver->minor_start = 0, | |
1683 | acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, | |
1684 | acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, | |
331b8319 | 1685 | acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 | 1686 | acm_tty_driver->init_termios = tty_std_termios; |
6e47e069 AC |
1687 | acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | |
1688 | HUPCL | CLOCAL; | |
1da177e4 LT |
1689 | tty_set_operations(acm_tty_driver, &acm_ops); |
1690 | ||
1691 | retval = tty_register_driver(acm_tty_driver); | |
1692 | if (retval) { | |
1693 | put_tty_driver(acm_tty_driver); | |
1694 | return retval; | |
1695 | } | |
1696 | ||
1697 | retval = usb_register(&acm_driver); | |
1698 | if (retval) { | |
1699 | tty_unregister_driver(acm_tty_driver); | |
1700 | put_tty_driver(acm_tty_driver); | |
1701 | return retval; | |
1702 | } | |
1703 | ||
a2c7b935 | 1704 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
1705 | |
1706 | return 0; | |
1707 | } | |
1708 | ||
1709 | static void __exit acm_exit(void) | |
1710 | { | |
1711 | usb_deregister(&acm_driver); | |
1712 | tty_unregister_driver(acm_tty_driver); | |
1713 | put_tty_driver(acm_tty_driver); | |
1714 | } | |
1715 | ||
1716 | module_init(acm_init); | |
1717 | module_exit(acm_exit); | |
1718 | ||
6e47e069 AC |
1719 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1720 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 1721 | MODULE_LICENSE("GPL"); |
e766aeb8 | 1722 | MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR); |