projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'v3.10.107' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / class / cdc-acm.c
CommitLineData
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
6fa3eb70
S		 53#ifdef CONFIG_MTK_DT_USB_SUPPORT
54
55/* adjust to 1 to avoid musb bug when lots write with clean urb */
56#undef ACM_NW
57#define ACM_NW 1
58/* adjust SZ to hsmaxp*20 to prevent tty disc don't accept big size write */
59#define ACM_WB_SZ (512*20)
60
61#define DATA_DUMP_BYTES 15 // wx, how many bytes we'll print out for each packet
62#define DATA_DUMP_SIZE 64 // wx, should be large enough to hold DATA_DUMP_DIGITS
63static unsigned char data_out[DATA_DUMP_SIZE];
64static unsigned char data_in[DATA_DUMP_SIZE];
65/* Debug functions */
66static int enable_debug = 0;
67static int enable_dump = 0;
68//origninal CDC-ACM log, more detail
69#undef dev_dbg
70#define dev_dbg(dev, format, args...) \
71 do{ \
72 if(enable_debug) { \
73 dev_printk(KERN_WARNING, dev, "[CDC-ACM] " format, ##args); \
74 } \
75 }while(0)
76#undef dev_vdbg
77#define dev_vdbg dev_dbg
78//MTK added CDC-ACM log, more critical
79#define dbg_mtk(dev, format, args...) \
80 do{ \
81 dev_printk(KERN_WARNING, dev, "[CDC-ACM-MTK] " format "\n", ##args); \
82 }while(0)
83#else
84#define dbg_mtk(dev, format, args...) do{}while(0)
85#endif
86
e5fbab51 87
088c64f8 88#define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold"
1da177e4
LT		 89#define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters"
90
91static struct usb_driver acm_driver;
92static struct tty_driver *acm_tty_driver;
93static struct acm *acm_table[ACM_TTY_MINORS];
94
7fb57a01 95static DEFINE_MUTEX(acm_table_lock);
1da177e4 96
6fa3eb70
S		 97#define MYDBG(fmt, args...) do {printk(KERN_WARNING "MTK_ACM, <%s(), %d> " fmt, __func__, __LINE__, ## args); }while(0)
98
99#ifdef CONFIG_MTK_DT_USB_SUPPORT
100
101#define RECORD_SZ 100
102#define DUMP_DELAY 3
103struct record_entry
104{
105 struct timeval cur_time;
106 u32 transfer_buffer_length;
107 u32 actual_length;
108 int status;
109 unsigned char data;
110
111}w1[RECORD_SZ], w2[RECORD_SZ], r1[RECORD_SZ], r2[RECORD_SZ];
112
113static int w1_idx, w2_idx, r1_idx, r2_idx;
114static int record_enable = 0;
115static struct timeval tv_start;
116void dump_record(void)
117{
118 int i, index_limit;
119 struct record_entry *ptr;
120
121 index_limit = w1_idx;
122 ptr = w1;
123 for(i = 0; i < index_limit; i++){
124 MYDBG("w1, time:(%d,%d), reqlen:%d, data:%x\n",
125 (unsigned int)ptr[i].cur_time.tv_sec, (unsigned int)ptr[i].cur_time.tv_usec, (unsigned int)ptr[i].transfer_buffer_length, ptr[i].data);
126 mdelay(DUMP_DELAY);
127 }
128
129 index_limit = r1_idx;
130 ptr = r1;
131 for(i = 0; i < index_limit; i++){
132 MYDBG("r1, time:(%d,%d), reqlen:%d\n",
133 (unsigned int)ptr[i].cur_time.tv_sec, (unsigned int)ptr[i].cur_time.tv_usec, ptr[i].transfer_buffer_length);
134 mdelay(DUMP_DELAY);
135 }
136
137 index_limit = w2_idx;
138 ptr = w2;
139 for(i = 0; i < index_limit; i++){
140 MYDBG("w2, time:(%d,%d), reqlen:%d, actlen:%d, status:%d, data:%x\n",
141 (unsigned int)ptr[i].cur_time.tv_sec, (unsigned int)ptr[i].cur_time.tv_usec, ptr[i].transfer_buffer_length, ptr[i].actual_length, ptr[i].status, ptr[i].data);
142 mdelay(DUMP_DELAY);
143 }
144
145 index_limit = r2_idx;
146 ptr = r2;
147 for(i = 0; i < index_limit; i++){
148 MYDBG("r2, time:(%d,%d), reqlen:%d, actlen:%d, status:%d, data:%x\n",
149 (unsigned int)ptr[i].cur_time.tv_sec, (unsigned int)ptr[i].cur_time.tv_usec, ptr[i].transfer_buffer_length, ptr[i].actual_length, ptr[i].status, ptr[i].data);
150 mdelay(DUMP_DELAY);
151 }
152
153}
154void record_activity(struct urb *urb, int is_in, int is_complete)
155{
156 struct timeval tv_time;
157
158 if(!record_enable)
159 return;
160
161 do_gettimeofday(&tv_time);
162 tv_time.tv_sec = tv_time.tv_sec - tv_start.tv_sec;
163 tv_time.tv_usec = tv_time.tv_usec - tv_start.tv_usec;
164 if(is_in){
165 if(is_complete){
166 if(r2_idx >= RECORD_SZ)
167 return;
168
169 r2[r2_idx].cur_time = tv_time;
170 r2[r2_idx].transfer_buffer_length = urb->transfer_buffer_length;
171 r2[r2_idx].actual_length = urb->actual_length;
172 r2[r2_idx].status = urb->status;
173 r2[r2_idx].data = *((unsigned char*)urb->transfer_buffer);
174 r2_idx++;
175 return;
176 }
177 if(r1_idx >= RECORD_SZ)
178 return;
179 r1[r1_idx].cur_time = tv_time;
180 r1[r1_idx].transfer_buffer_length = urb->transfer_buffer_length;
181 r1[r1_idx].actual_length = urb->actual_length;
182 r1[r1_idx].status = urb->status;
183 r1_idx++;
184 }else{
185 if(is_complete){
186 if(w2_idx >= RECORD_SZ)
187 return;
188 w2[w2_idx].cur_time = tv_time;
189 w2[w2_idx].transfer_buffer_length = urb->transfer_buffer_length;
190 w2[w2_idx].actual_length = urb->actual_length;
191 w2[w2_idx].status = urb->status;
192 w2[w2_idx].data = *((unsigned char*)urb->transfer_buffer);
193 w2_idx++;
194 return;
195 }
196 if(w1_idx >= RECORD_SZ)
197 return;
198 w1[w1_idx].cur_time = tv_time;
199 w1[w1_idx].transfer_buffer_length = urb->transfer_buffer_length;
200 w1[w1_idx].actual_length = urb->actual_length;
201 w1[w1_idx].status = urb->status;
202 w1[w1_idx].data = *((unsigned char*)urb->transfer_buffer);
203 w1_idx++;
204 }
205}
206
207bool usb_h_acm_all_clear(void)
208{
209 int i;
210 int count = 0;
211 for (i = 0; i < ACM_TTY_MINORS; i++) {
212 if(acm_table[i] != NULL) {
213 count++;
214 }
215 }
216 MYDBG("count<%d>\n", count);
217 return !count;
218}
219EXPORT_SYMBOL_GPL(usb_h_acm_all_clear);
220
221#define CHECK_INTERVAL 2
222#define CB_NUM 3
223extern unsigned long volatile jiffies;
224static unsigned long callback_check_timeout[CB_NUM];
225static char *callback_name[CB_NUM] = {
226 "acm_read_bulk_callback",
227 "acm_write_bulk",
228 "acm_ctrl_irq",
229};
230void mark_callback_alive(char *func_name, struct urb *urb, struct acm *acm)
231{
232
233
234 int i;
235 for(i = 0; i < CB_NUM ; i++)
236 {
237 if(!strcmp(func_name, callback_name[i])){
238 if(enable_debug || time_after(jiffies, callback_check_timeout[i]))
239 {
240 MYDBG("%s,ep(%d),len(%d,%d),data(%x),sts(%d), minor(%d)\n",
241 func_name,
242 urb->ep->desc.bEndpointAddress,
243 urb->actual_length,
244 urb->transfer_buffer_length,
245 *((unsigned char*)urb->transfer_buffer),
246 urb->status,
247 acm->minor);
248 callback_check_timeout[i] = jiffies + HZ * CHECK_INTERVAL;
249 }
250 break;
251 }
252 }
253}
254
255
256#endif
257
7fb57a01
HS		 258/*
259 * acm_table accessors
260 */
1da177e4 261
7fb57a01
HS		 262/*
263 * Look up an ACM structure by index. If found and not disconnected, increment
264 * its refcount and return it with its mutex held.
265 */
266static struct acm *acm_get_by_index(unsigned index)
267{
268 struct acm *acm;
269
270 mutex_lock(&acm_table_lock);
271 acm = acm_table[index];
272 if (acm) {
273 mutex_lock(&acm->mutex);
274 if (acm->disconnected) {
275 mutex_unlock(&acm->mutex);
276 acm = NULL;
277 } else {
278 tty_port_get(&acm->port);
279 mutex_unlock(&acm->mutex);
280 }
281 }
282 mutex_unlock(&acm_table_lock);
283 return acm;
284}
285
286/*
287 * Try to find an available minor number and if found, associate it with 'acm'.
288 */
289static int acm_alloc_minor(struct acm *acm)
290{
291 int minor;
292
293 mutex_lock(&acm_table_lock);
294 for (minor = 0; minor < ACM_TTY_MINORS; minor++) {
295 if (!acm_table[minor]) {
296 acm_table[minor] = acm;
297 break;
298 }
299 }
300 mutex_unlock(&acm_table_lock);
301
302 return minor;
303}
304
305/* Release the minor number associated with 'acm'. */
306static void acm_release_minor(struct acm *acm)
307{
308 mutex_lock(&acm_table_lock);
309 acm_table[acm->minor] = NULL;
310 mutex_unlock(&acm_table_lock);
311}
739e0285 312
1da177e4
LT		 313/*
314 * Functions for ACM control messages.
315 */
316
6e47e069
AC		 317static int acm_ctrl_msg(struct acm *acm, int request, int value,
318 void *buf, int len)
1da177e4 319{
60c64b0c
JH		 320 int retval;
321
322 retval = usb_autopm_get_interface(acm->control);
323 if (retval)
324 return retval;
325
326 retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
1da177e4
LT		 327 request, USB_RT_ACM, value,
328 acm->control->altsetting[0].desc.bInterfaceNumber,
329 buf, len, 5000);
60c64b0c 330
a5cc7ef9
JH		 331 dev_dbg(&acm->control->dev,
332 "%s - rq 0x%02x, val %#x, len %#x, result %d\n",
333 __func__, request, value, len, retval);
60c64b0c
JH		 334
335 usb_autopm_put_interface(acm->control);
336
1da177e4
LT		 337 return retval < 0 ? retval : 0;
338}
339
340/* devices aren't required to support these requests.
341 * the cdc acm descriptor tells whether they do...
342 */
343#define acm_set_control(acm, control) \
344 acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
345#define acm_set_line(acm, line) \
346 acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
347#define acm_send_break(acm, ms) \
348 acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
349
884b600f
ON		 350/*
351 * Write buffer management.
352 * All of these assume proper locks taken by the caller.
353 */
354
355static int acm_wb_alloc(struct acm *acm)
356{
357 int i, wbn;
358 struct acm_wb *wb;
359
e4cf3aa8 360 wbn = 0;
884b600f
ON		 361 i = 0;
362 for (;;) {
363 wb = &acm->wb[wbn];
364 if (!wb->use) {
365 wb->use = 1;
366 return wbn;
367 }
86478944
ON		 368 wbn = (wbn + 1) % ACM_NW;
369 if (++i >= ACM_NW)
884b600f
ON		 370 return -1;
371 }
372}
373
884b600f
ON		 374static int acm_wb_is_avail(struct acm *acm)
375{
376 int i, n;
e5fbab51 377 unsigned long flags;
884b600f 378
86478944 379 n = ACM_NW;
e5fbab51 380 spin_lock_irqsave(&acm->write_lock, flags);
6e47e069 381 for (i = 0; i < ACM_NW; i++)
86478944 382 n -= acm->wb[i].use;
e5fbab51 383 spin_unlock_irqrestore(&acm->write_lock, flags);
884b600f
ON		 384 return n;
385}
386
884b600f 387/*
ad0b65ef 388 * Finish write. Caller must hold acm->write_lock
884b600f 389 */
e4cf3aa8 390static void acm_write_done(struct acm *acm, struct acm_wb *wb)
884b600f 391{
e4cf3aa8 392 wb->use = 0;
11ea859d 393 acm->transmitting--;
97d35f95 394 usb_autopm_put_interface_async(acm->control);
884b600f
ON		 395}
396
397/*
398 * Poke write.
11ea859d
ON		 399 *
400 * the caller is responsible for locking
884b600f 401 */
11ea859d
ON		 402
403static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
404{
405 int rc;
406
407 acm->transmitting++;
408
409 wb->urb->transfer_buffer = wb->buf;
410 wb->urb->transfer_dma = wb->dmah;
411 wb->urb->transfer_buffer_length = wb->len;
412 wb->urb->dev = acm->dev;
413
6fa3eb70
S		 414#ifdef CONFIG_MTK_DT_USB_SUPPORT
415 record_activity(wb->urb, 0, 0);
416#endif
6e47e069
AC		 417 rc = usb_submit_urb(wb->urb, GFP_ATOMIC);
418 if (rc < 0) {
a5cc7ef9
JH		 419 dev_err(&acm->data->dev,
420 "%s - usb_submit_urb(write bulk) failed: %d\n",
421 __func__, rc);
11ea859d
ON		 422 acm_write_done(acm, wb);
423 }
424 return rc;
425}
426
e4cf3aa8 427static int acm_write_start(struct acm *acm, int wbn)
884b600f
ON		 428{
429 unsigned long flags;
934da463 430 struct acm_wb *wb = &acm->wb[wbn];
884b600f
ON		 431 int rc;
432
433 spin_lock_irqsave(&acm->write_lock, flags);
434 if (!acm->dev) {
934da463 435 wb->use = 0;
884b600f
ON		 436 spin_unlock_irqrestore(&acm->write_lock, flags);
437 return -ENODEV;
438 }
439
5e9e75f8 440 dev_vdbg(&acm->data->dev, "%s - susp_count %d\n", __func__,
a5cc7ef9 441 acm->susp_count);
97d35f95 442 usb_autopm_get_interface_async(acm->control);
11ea859d 443 if (acm->susp_count) {
67e8477b 444 usb_anchor_urb(wb->urb, &acm->delayed);
11ea859d 445 spin_unlock_irqrestore(&acm->write_lock, flags);
67e8477b 446 return 0;
11ea859d
ON		 447 }
448 usb_mark_last_busy(acm->dev);
449
11ea859d 450 rc = acm_start_wb(acm, wb);
884b600f
ON		 451 spin_unlock_irqrestore(&acm->write_lock, flags);
452
884b600f 453 return rc;
11ea859d 454
884b600f 455}
c4cabd28
ON		 456/*
457 * attributes exported through sysfs
458 */
459static ssize_t show_caps
460(struct device *dev, struct device_attribute *attr, char *buf)
461{
462 struct usb_interface *intf = to_usb_interface(dev);
463 struct acm *acm = usb_get_intfdata(intf);
464
465 return sprintf(buf, "%d", acm->ctrl_caps);
466}
467static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL);
468
469static ssize_t show_country_codes
470(struct device *dev, struct device_attribute *attr, char *buf)
471{
472 struct usb_interface *intf = to_usb_interface(dev);
473 struct acm *acm = usb_get_intfdata(intf);
474
475 memcpy(buf, acm->country_codes, acm->country_code_size);
476 return acm->country_code_size;
477}
478
479static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL);
480
481static ssize_t show_country_rel_date
482(struct device *dev, struct device_attribute *attr, char *buf)
483{
484 struct usb_interface *intf = to_usb_interface(dev);
485 struct acm *acm = usb_get_intfdata(intf);
486
487 return sprintf(buf, "%d", acm->country_rel_date);
488}
884b600f 489
c4cabd28 490static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL);
1da177e4
LT		 491/*
492 * Interrupt handlers for various ACM device responses
493 */
494
495/* control interface reports status changes with "interrupt" transfers */
7d12e780 496static void acm_ctrl_irq(struct urb *urb)
1da177e4
LT		 497{
498 struct acm *acm = urb->context;
499 struct usb_cdc_notification *dr = urb->transfer_buffer;
500 unsigned char *data;
501 int newctrl;
185d4058
GKH		 502 int retval;
503 int status = urb->status;
1da177e4 504
185d4058 505 switch (status) {
1da177e4
LT		 506 case 0:
507 /* success */
508 break;
509 case -ECONNRESET:
510 case -ENOENT:
511 case -ESHUTDOWN:
512 /* this urb is terminated, clean up */
6fa3eb70 513 dev_err(&acm->control->dev,
a5cc7ef9
JH		 514 "%s - urb shutting down with status: %d\n",
515 __func__, status);
1da177e4
LT		 516 return;
517 default:
6fa3eb70 518 dev_err(&acm->control->dev,
a5cc7ef9
JH		 519 "%s - nonzero urb status received: %d\n",
520 __func__, status);
1da177e4
LT		 521 goto exit;
522 }
523
7e7797e7 524 usb_mark_last_busy(acm->dev);
6fa3eb70
S		 525#ifdef CONFIG_MTK_DT_USB_SUPPORT
526 mark_callback_alive(__func__, urb, acm);
527#endif
7e7797e7 528
1da177e4
LT		 529 data = (unsigned char *)(dr + 1);
530 switch (dr->bNotificationType) {
6e47e069 531 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
a5cc7ef9
JH		 532 dev_dbg(&acm->control->dev, "%s - network connection: %d\n",
533 __func__, dr->wValue);
6e47e069 534 break;
1da177e4 535
6e47e069 536 case USB_CDC_NOTIFY_SERIAL_STATE:
6e47e069 537 newctrl = get_unaligned_le16(data);
1da177e4 538
aa27a094
JS		 539 if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
540 dev_dbg(&acm->control->dev, "%s - calling hangup\n",
541 __func__);
542 tty_port_tty_hangup(&acm->port, false);
6e47e069 543 }
1da177e4 544
6e47e069 545 acm->ctrlin = newctrl;
1da177e4 546
a5cc7ef9
JH		 547 dev_dbg(&acm->control->dev,
548 "%s - input control lines: dcd%c dsr%c break%c "
549 "ring%c framing%c parity%c overrun%c\n",
550 __func__,
6e47e069
AC		 551 acm->ctrlin & ACM_CTRL_DCD ? '+' : '-',
552 acm->ctrlin & ACM_CTRL_DSR ? '+' : '-',
553 acm->ctrlin & ACM_CTRL_BRK ? '+' : '-',
554 acm->ctrlin & ACM_CTRL_RI ? '+' : '-',
555 acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-',
556 acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-',
557 acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-');
1da177e4
LT		 558 break;
559
6e47e069 560 default:
a5cc7ef9
JH		 561 dev_dbg(&acm->control->dev,
562 "%s - unknown notification %d received: index %d "
563 "len %d data0 %d data1 %d\n",
564 __func__,
6e47e069
AC		 565 dr->bNotificationType, dr->wIndex,
566 dr->wLength, data[0], data[1]);
567 break;
1da177e4
LT		 568 }
569exit:
6e47e069 570 retval = usb_submit_urb(urb, GFP_ATOMIC);
185d4058 571 if (retval)
1d9846e5
JH		 572 dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n",
573 __func__, retval);
1da177e4
LT		 574}
575
088c64f8 576static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
1da177e4 577{
088c64f8 578 int res;
185d4058 579
6fa3eb70 580 if (!test_and_clear_bit(index, &acm->read_urbs_free)){
088c64f8 581 return 0;
6fa3eb70 582 }
1da177e4 583
088c64f8
JH		 584 dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index);
585
6fa3eb70
S		 586#ifdef CONFIG_MTK_DT_USB_SUPPORT
587 record_activity(acm->read_urbs[index], 1, 0);
588#endif
589
088c64f8
JH		 590 res = usb_submit_urb(acm->read_urbs[index], mem_flags);
591 if (res) {
6fa3eb70 592 MYDBG("urb fail(%d)\n", res);
088c64f8
JH		 593 if (res != -EPERM) {
594 dev_err(&acm->data->dev,
595 "%s - usb_submit_urb failed: %d\n",
596 __func__, res);
597 }
598 set_bit(index, &acm->read_urbs_free);
599 return res;
11ea859d 600 }
1da177e4 601
088c64f8
JH		 602 return 0;
603}
1da177e4 604
088c64f8
JH		 605static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags)
606{
607 int res;
608 int i;
61a87adf 609
088c64f8
JH		 610 for (i = 0; i < acm->rx_buflimit; ++i) {
611 res = acm_submit_read_urb(acm, i, mem_flags);
6fa3eb70 612 if (res){
088c64f8 613 return res;
6fa3eb70 614 }
86478944 615 }
088c64f8
JH		 616
617 return 0;
1da177e4
LT		 618}
619
088c64f8 620static void acm_process_read_urb(struct acm *acm, struct urb *urb)
1da177e4 621{
6fa3eb70
S		 622
623#ifdef CONFIG_MTK_DT_USB_SUPPORT
624 int i, len;
625#endif
626 if (!urb->actual_length){
ca79b7b4 627 return;
6fa3eb70
S		 628 }
629#ifdef CONFIG_MTK_DT_USB_SUPPORT
630 if(enable_dump) {
631 len = sprintf(data_in, "DT-I: ");
632 for(i=0; i<urb->actual_length && i<DATA_DUMP_BYTES; i++) {
633 len += sprintf(data_in+len, "%02X ", *(((unsigned char *)(urb->transfer_buffer))+i));
634 }
635 sprintf(data_in+len, "\n");
636 dbg_mtk(&acm->data->dev, "%s", data_in);
637 }
638#endif
61a87adf 639
05c7cd39
JS		 640 tty_insert_flip_string(&acm->port, urb->transfer_buffer,
641 urb->actual_length);
2e124b4a 642 tty_flip_buffer_push(&acm->port);
088c64f8 643}
10077d4a 644
088c64f8
JH		 645static void acm_read_bulk_callback(struct urb *urb)
646{
647 struct acm_rb *rb = urb->context;
648 struct acm *acm = rb->instance;
649 unsigned long flags;
61a87adf 650
088c64f8
JH		 651 dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__,
652 rb->index, urb->actual_length);
653 set_bit(rb->index, &acm->read_urbs_free);
61a87adf 654
6fa3eb70
S		 655#ifdef CONFIG_MTK_DT_USB_SUPPORT
656 record_activity(urb, 1, 1);
657#endif
658
088c64f8
JH		 659 if (!acm->dev) {
660 dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__);
661 return;
662 }
663 usb_mark_last_busy(acm->dev);
61a87adf 664
088c64f8 665 if (urb->status) {
6fa3eb70 666 dev_err(&acm->data->dev, "%s - non-zero urb status: %d\n",
088c64f8
JH		 667 __func__, urb->status);
668 return;
61a87adf 669 }
6fa3eb70
S		 670#ifdef CONFIG_MTK_DT_USB_SUPPORT
671 mark_callback_alive(__func__, urb, acm);
672#endif
088c64f8
JH		 673 acm_process_read_urb(acm, urb);
674
675 /* throttle device if requested by tty */
11ea859d 676 spin_lock_irqsave(&acm->read_lock, flags);
088c64f8
JH		 677 acm->throttled = acm->throttle_req;
678 if (!acm->throttled && !acm->susp_count) {
679 spin_unlock_irqrestore(&acm->read_lock, flags);
680 acm_submit_read_urb(acm, rb->index, GFP_ATOMIC);
681 } else {
682 spin_unlock_irqrestore(&acm->read_lock, flags);
683 }
1da177e4
LT		 684}
685
686/* data interface wrote those outgoing bytes */
7d12e780 687static void acm_write_bulk(struct urb *urb)
1da177e4 688{
cdc97792 689 struct acm_wb *wb = urb->context;
e5fbab51 690 struct acm *acm = wb->instance;
ad0b65ef 691 unsigned long flags;
1da177e4 692
6fa3eb70
S		 693
694 if (urb->status || (urb->actual_length != urb->transfer_buffer_length)){
695 dev_err(&acm->data->dev, "%s - len %d/%d, status %d, data(%x)\n",
1d9846e5 696 __func__,
e5fbab51
DB		 697 urb->actual_length,
698 urb->transfer_buffer_length,
6fa3eb70
S		 699 urb->status,
700 *((char *)(urb->transfer_buffer)));
701 }
702#ifdef CONFIG_MTK_DT_USB_SUPPORT
703 record_activity(urb, 0, 1);
704#endif
1da177e4 705
6fa3eb70
S		 706#ifdef CONFIG_MTK_DT_USB_SUPPORT
707 mark_callback_alive(__func__, urb, acm);
708#endif
ad0b65ef 709 spin_lock_irqsave(&acm->write_lock, flags);
e4cf3aa8 710 acm_write_done(acm, wb);
ad0b65ef 711 spin_unlock_irqrestore(&acm->write_lock, flags);
99823f45 712 schedule_work(&acm->work);
1da177e4
LT		 713}
714
c4028958 715static void acm_softint(struct work_struct *work)
1da177e4 716{
c4028958 717 struct acm *acm = container_of(work, struct acm, work);
e5fbab51 718
1d9846e5
JH		 719 dev_vdbg(&acm->data->dev, "%s\n", __func__);
720
6aad04f2 721 tty_port_tty_wakeup(&acm->port);
1da177e4
LT		 722}
723
724/*
725 * TTY handlers
726 */
727
7fb57a01 728static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
1da177e4
LT		 729{
730 struct acm *acm;
7fb57a01 731 int retval;
1da177e4 732
7fb57a01 733 dev_dbg(tty->dev, "%s\n", __func__);
1da177e4 734
7fb57a01
HS		 735 acm = acm_get_by_index(tty->index);
736 if (!acm)
737 return -ENODEV;
a5cc7ef9 738
f8a8c10f 739 retval = tty_standard_install(driver, tty);
7fb57a01
HS		 740 if (retval)
741 goto error_init_termios;
10077d4a 742
1da177e4 743 tty->driver_data = acm;
1da177e4 744
7fb57a01
HS		 745 return 0;
746
747error_init_termios:
748 tty_port_put(&acm->port);
749 return retval;
750}
751
6fa3eb70
S		 752#ifdef CONFIG_MTK_DT_USB_SUPPORT
753extern struct usb_device *get_usb11_child_udev(void);
754extern int usb_autoresume_device(struct usb_device *udev);
755#endif
7fb57a01
HS		 756static int acm_tty_open(struct tty_struct *tty, struct file *filp)
757{
6fa3eb70
S		 758#ifdef CONFIG_MTK_DT_USB_SUPPORT
759 struct usb_device *udev;
760 int result;
761#endif
762 struct acm *acm;
763 acm = tty->driver_data;
764
765#ifdef CONFIG_MTK_DT_USB_SUPPORT
766 dbg_mtk(&acm->control->dev, "%s port_cnt=%d", __func__, acm->port.count);
767 MYDBG("ctrl:%x, read:%x, write:%x\n",
768 (acm->control->cur_altsetting->endpoint[0].desc).bEndpointAddress,
769 (acm->data->cur_altsetting->endpoint[0].desc).bEndpointAddress,
770 (acm->data->cur_altsetting->endpoint[1].desc).bEndpointAddress);
771
7fb57a01 772
6fa3eb70
S		 773#define META_BIN_NAME "meta_tst"
774#define MDDOWNLOADER_BIN_NAME "downloader"
775
776 /* make sure usb1 is always alive in dl/meta mode */
777 if(!strcmp(META_BIN_NAME, current->comm) || !strcmp(MDDOWNLOADER_BIN_NAME, current->comm)){
778 udev = get_usb11_child_udev();
779 result = usb_autoresume_device(udev);
780 dbg_mtk(&acm->control->dev, "%s, auto result:%d", __func__, result);
781 }
782
783 if(!strcmp(MDDOWNLOADER_BIN_NAME, current->comm)){
784 record_enable = 1;
785 w1_idx = w2_idx = r1_idx = r2_idx = 0;
786 do_gettimeofday(&tv_start);
787 }
788
789#else
790 dev_dbg(&acm->control->dev, "%s\n", __func__);
791#endif
7fb57a01
HS		 792 dev_dbg(tty->dev, "%s\n", __func__);
793
794 return tty_port_open(&acm->port, tty, filp);
795}
796
797static int acm_port_activate(struct tty_port *port, struct tty_struct *tty)
798{
799 struct acm *acm = container_of(port, struct acm, port);
800 int retval = -ENODEV;
39166123 801 int i;
7fb57a01
HS		 802
803 dev_dbg(&acm->control->dev, "%s\n", __func__);
1365baf7
ON		 804
805 mutex_lock(&acm->mutex);
7fb57a01
HS		 806 if (acm->disconnected)
807 goto disconnected;
808
809 retval = usb_autopm_get_interface(acm->control);
810 if (retval)
811 goto error_get_interface;
812
813 /*
814 * FIXME: Why do we need this? Allocating 64K of physically contiguous
815 * memory is really nasty...
816 */
817 set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
818 acm->control->needs_remote_wakeup = 1;
6fa3eb70
S		 819#ifdef CONFIG_MTK_DT_USB_SUPPORT
820#ifdef CONFIG_PM_RUNTIME
821 acm->control->needs_remote_wakeup = 0;
822#endif
823#endif
1365baf7 824
1da177e4 825 acm->ctrlurb->dev = acm->dev;
817a471a
JH		 826 retval = usb_submit_urb(acm->ctrlurb, GFP_KERNEL);
827 if (retval) {
a5cc7ef9
JH		 828 dev_err(&acm->control->dev,
829 "%s - usb_submit_urb(ctrl irq) failed\n", __func__);
7fb57a01 830 goto error_submit_urb;
1da177e4
LT		 831 }
832
7fb57a01 833 acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS;
817a471a
JH		 834 retval = acm_set_control(acm, acm->ctrlout);
835 if (retval < 0 && (acm->ctrl_caps & USB_CDC_CAP_LINE))
7fb57a01 836 goto error_set_control;
10077d4a 837
6c4707f3
OM		 838 /*
839 * Unthrottle device in case the TTY was closed while throttled.
840 */
841 spin_lock_irq(&acm->read_lock);
842 acm->throttled = 0;
843 acm->throttle_req = 0;
844 spin_unlock_irq(&acm->read_lock);
845
817a471a
JH		 846 retval = acm_submit_read_urbs(acm, GFP_KERNEL);
847 if (retval)
7fb57a01 848 goto error_submit_read_urbs;
2b626dc1 849
256d49ba
JH		 850 usb_autopm_put_interface(acm->control);
851
1365baf7 852 mutex_unlock(&acm->mutex);
1da177e4 853
7fb57a01
HS		 854 return 0;
855
856error_submit_read_urbs:
39166123
JH		 857 for (i = 0; i < acm->rx_buflimit; i++)
858 usb_kill_urb(acm->read_urbs[i]);
7fb57a01
HS		 859 acm->ctrlout = 0;
860 acm_set_control(acm, acm->ctrlout);
861error_set_control:
862 usb_kill_urb(acm->ctrlurb);
863error_submit_urb:
2b626dc1 864 usb_autopm_put_interface(acm->control);
7fb57a01
HS		 865error_get_interface:
866disconnected:
867 mutex_unlock(&acm->mutex);
817a471a
JH		 868
869 return usb_translate_errors(retval);
1da177e4
LT		 870}
871
7fb57a01 872static void acm_port_destruct(struct tty_port *port)
83ef344a 873{
7fb57a01
HS		 874 struct acm *acm = container_of(port, struct acm, port);
875
876 dev_dbg(&acm->control->dev, "%s\n", __func__);
61a87adf 877
7fb57a01 878 acm_release_minor(acm);
83ef344a 879 usb_put_intf(acm->control);
c4cabd28 880 kfree(acm->country_codes);
83ef344a 881 kfree(acm);
882}
883
7fb57a01 884static void acm_port_shutdown(struct tty_port *port)
10077d4a 885{
7fb57a01 886 struct acm *acm = container_of(port, struct acm, port);
67e8477b
JH		 887 struct urb *urb;
888 struct acm_wb *wb;
dab54c9f 889 int i;
4421a014 890 int pm_err;
dab54c9f 891
7fb57a01
HS		 892 dev_dbg(&acm->control->dev, "%s\n", __func__);
893
894 mutex_lock(&acm->mutex);
895 if (!acm->disconnected) {
4421a014 896 pm_err = usb_autopm_get_interface(acm->control);
10077d4a 897 acm_set_control(acm, acm->ctrlout = 0);
67e8477b
JH		 898
899 for (;;) {
900 urb = usb_get_from_anchor(&acm->delayed);
901 if (!urb)
902 break;
903 wb = urb->context;
904 wb->use = 0;
905 usb_autopm_put_interface_async(acm->control);
906 }
907
10077d4a
AC		 908 usb_kill_urb(acm->ctrlurb);
909 for (i = 0; i < ACM_NW; i++)
910 usb_kill_urb(acm->wb[i].urb);
dab54c9f 911 for (i = 0; i < acm->rx_buflimit; i++)
088c64f8 912 usb_kill_urb(acm->read_urbs[i]);
10077d4a 913 acm->control->needs_remote_wakeup = 0;
4421a014
JH		 914 if (!pm_err)
915 usb_autopm_put_interface(acm->control);
10077d4a 916 }
7fb57a01
HS		 917 mutex_unlock(&acm->mutex);
918}
919
920static void acm_tty_cleanup(struct tty_struct *tty)
921{
922 struct acm *acm = tty->driver_data;
923 dev_dbg(&acm->control->dev, "%s\n", __func__);
924 tty_port_put(&acm->port);
10077d4a
AC		 925}
926
927static void acm_tty_hangup(struct tty_struct *tty)
928{
929 struct acm *acm = tty->driver_data;
7fb57a01 930 dev_dbg(&acm->control->dev, "%s\n", __func__);
10077d4a 931 tty_port_hangup(&acm->port);
10077d4a
AC		 932}
933
1da177e4
LT		 934static void acm_tty_close(struct tty_struct *tty, struct file *filp)
935{
936 struct acm *acm = tty->driver_data;
7fb57a01 937 dev_dbg(&acm->control->dev, "%s\n", __func__);
6fa3eb70
S		 938#ifdef CONFIG_MTK_DT_USB_SUPPORT
939 dbg_mtk(&acm->control->dev, "%s port_cnt=%d", __func__, acm->port.count);
940 if(!strcmp(MDDOWNLOADER_BIN_NAME, current->comm)){
941 record_enable = 0;
942 dump_record();
943 }
944#endif
7fb57a01 945 tty_port_close(&acm->port, tty, filp);
1da177e4
LT		 946}
947
6e47e069
AC		 948static int acm_tty_write(struct tty_struct *tty,
949 const unsigned char *buf, int count)
1da177e4
LT		 950{
951 struct acm *acm = tty->driver_data;
952 int stat;
884b600f
ON		 953 unsigned long flags;
954 int wbn;
955 struct acm_wb *wb;
6fa3eb70
S		 956#ifdef CONFIG_MTK_DT_USB_SUPPORT
957 int i, len;
958#endif
884b600f 959
1da177e4
LT		 960 if (!count)
961 return 0;
962
5e9e75f8 963 dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count);
a5cc7ef9 964
6fa3eb70
S		 965#ifdef CONFIG_MTK_DT_USB_SUPPORT
966 if(enable_dump) {
967 len = sprintf(data_out, "DT-O: ");
968 for(i=0; i<count && i<DATA_DUMP_BYTES; i++) {
969 len += sprintf(data_out+len, "%02X ", *(buf+i));
970 }
971 sprintf(data_out+len, "\n");
972 dbg_mtk(&acm->data->dev, "%s", data_out);
973 }
974#endif
884b600f 975 spin_lock_irqsave(&acm->write_lock, flags);
6e47e069
AC		 976 wbn = acm_wb_alloc(acm);
977 if (wbn < 0) {
884b600f 978 spin_unlock_irqrestore(&acm->write_lock, flags);
884b600f
ON		 979 return 0;
980 }
981 wb = &acm->wb[wbn];
1da177e4 982
884b600f 983 count = (count > acm->writesize) ? acm->writesize : count;
5e9e75f8 984 dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count);
884b600f
ON		 985 memcpy(wb->buf, buf, count);
986 wb->len = count;
987 spin_unlock_irqrestore(&acm->write_lock, flags);
1da177e4 988
6e47e069
AC		 989 stat = acm_write_start(acm, wbn);
990 if (stat < 0)
1da177e4 991 return stat;
1da177e4
LT		 992 return count;
993}
994
995static int acm_tty_write_room(struct tty_struct *tty)
996{
997 struct acm *acm = tty->driver_data;
884b600f
ON		 998 /*
999 * Do not let the line discipline to know that we have a reserve,
1000 * or it might get too enthusiastic.
1001 */
934da463 1002 return acm_wb_is_avail(acm) ? acm->writesize : 0;
1da177e4
LT		 1003}
1004
1005static int acm_tty_chars_in_buffer(struct tty_struct *tty)
1006{
1007 struct acm *acm = tty->driver_data;
7fb57a01
HS		 1008 /*
1009 * if the device was unplugged then any remaining characters fell out
1010 * of the connector ;)
1011 */
1012 if (acm->disconnected)
23198fda 1013 return 0;
884b600f
ON		 1014 /*
1015 * This is inaccurate (overcounts), but it works.
1016 */
86478944 1017 return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize;
1da177e4
LT		 1018}
1019
1020static void acm_tty_throttle(struct tty_struct *tty)
1021{
1022 struct acm *acm = tty->driver_data;
088c64f8 1023
088c64f8
JH		 1024 spin_lock_irq(&acm->read_lock);
1025 acm->throttle_req = 1;
1026 spin_unlock_irq(&acm->read_lock);
1da177e4
LT		 1027}
1028
1029static void acm_tty_unthrottle(struct tty_struct *tty)
1030{
1031 struct acm *acm = tty->driver_data;
088c64f8
JH		 1032 unsigned int was_throttled;
1033
088c64f8
JH		 1034 spin_lock_irq(&acm->read_lock);
1035 was_throttled = acm->throttled;
1036 acm->throttled = 0;
1037 acm->throttle_req = 0;
1038 spin_unlock_irq(&acm->read_lock);
1039
1040 if (was_throttled)
1041 acm_submit_read_urbs(acm, GFP_KERNEL);
1da177e4
LT		 1042}
1043
9e98966c 1044static int acm_tty_break_ctl(struct tty_struct *tty, int state)
1da177e4
LT		 1045{
1046 struct acm *acm = tty->driver_data;
9e98966c 1047 int retval;
7fb57a01 1048
9e98966c
AC		 1049 retval = acm_send_break(acm, state ? 0xffff : 0);
1050 if (retval < 0)
a5cc7ef9
JH		 1051 dev_dbg(&acm->control->dev, "%s - send break failed\n",
1052 __func__);
9e98966c 1053 return retval;
1da177e4
LT		 1054}
1055
60b33c13 1056static int acm_tty_tiocmget(struct tty_struct *tty)
1da177e4
LT		 1057{
1058 struct acm *acm = tty->driver_data;
1059
6fa3eb70
S		 1060#ifdef CONFIG_MTK_DT_USB_SUPPORT
1061 if(enable_dump) {
1062 dbg_mtk(&acm->control->dev, "tiocmget ctrlin=%x\n", acm->ctrlin);
1063 }
1064#endif
1da177e4
LT		 1065 return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
1066 (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
1067 (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
1068 (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) |
1069 (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) |
1070 TIOCM_CTS;
1071}
1072
20b9d177 1073static int acm_tty_tiocmset(struct tty_struct *tty,
1da177e4
LT		 1074 unsigned int set, unsigned int clear)
1075{
1076 struct acm *acm = tty->driver_data;
1077 unsigned int newctrl;
1078
6fa3eb70
S		 1079#ifdef CONFIG_MTK_DT_USB_SUPPORT
1080 if(enable_dump) {
1081 dbg_mtk(&acm->control->dev, "tiocmset ctrlout=%x\n", acm->ctrlout);
1082 }
1083#endif
1da177e4 1084 newctrl = acm->ctrlout;
6e47e069
AC		 1085 set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
1086 (set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
1087 clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
1088 (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
1da177e4
LT		 1089
1090 newctrl = (newctrl & ~clear) | set;
1091
1092 if (acm->ctrlout == newctrl)
1093 return 0;
1094 return acm_set_control(acm, acm->ctrlout = newctrl);
1095}
1096
18c75720
ON		 1097static int get_serial_info(struct acm *acm, struct serial_struct __user *info)
1098{
1099 struct serial_struct tmp;
1100
1101 if (!info)
1102 return -EINVAL;
1103
1104 memset(&tmp, 0, sizeof(tmp));
1105 tmp.flags = ASYNC_LOW_LATENCY;
1106 tmp.xmit_fifo_size = acm->writesize;
1107 tmp.baud_base = le32_to_cpu(acm->line.dwDTERate);
ba2d8ce9
DW		 1108 tmp.close_delay = acm->port.close_delay / 10;
1109 tmp.closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
1110 ASYNC_CLOSING_WAIT_NONE :
1111 acm->port.closing_wait / 10;
18c75720
ON		 1112
1113 if (copy_to_user(info, &tmp, sizeof(tmp)))
1114 return -EFAULT;
1115 else
1116 return 0;
1117}
1118
ba2d8ce9
DW		 1119static int set_serial_info(struct acm *acm,
1120 struct serial_struct __user *newinfo)
1121{
1122 struct serial_struct new_serial;
1123 unsigned int closing_wait, close_delay;
1124 int retval = 0;
1125
1126 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
1127 return -EFAULT;
1128
1129 close_delay = new_serial.close_delay * 10;
1130 closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
1131 ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10;
1132
1133 mutex_lock(&acm->port.mutex);
1134
1135 if (!capable(CAP_SYS_ADMIN)) {
1136 if ((close_delay != acm->port.close_delay) ||
1137 (closing_wait != acm->port.closing_wait))
1138 retval = -EPERM;
1139 else
1140 retval = -EOPNOTSUPP;
1141 } else {
1142 acm->port.close_delay = close_delay;
1143 acm->port.closing_wait = closing_wait;
1144 }
1145
1146 mutex_unlock(&acm->port.mutex);
1147 return retval;
1148}
1149
6caa76b7 1150static int acm_tty_ioctl(struct tty_struct *tty,
6e47e069 1151 unsigned int cmd, unsigned long arg)
1da177e4 1152{
18c75720
ON		 1153 struct acm *acm = tty->driver_data;
1154 int rv = -ENOIOCTLCMD;
1155
1156 switch (cmd) {
1157 case TIOCGSERIAL: /* gets serial port data */
1158 rv = get_serial_info(acm, (struct serial_struct __user *) arg);
ba2d8ce9
DW		 1159 break;
1160 case TIOCSSERIAL:
1161 rv = set_serial_info(acm, (struct serial_struct __user *) arg);
18c75720
ON		 1162 break;
1163 }
1164
1165 return rv;
1da177e4
LT		 1166}
1167
6e47e069
AC		 1168static void acm_tty_set_termios(struct tty_struct *tty,
1169 struct ktermios *termios_old)
1da177e4
LT		 1170{
1171 struct acm *acm = tty->driver_data;
adc8d746 1172 struct ktermios *termios = &tty->termios;
1da177e4
LT		 1173 struct usb_cdc_line_coding newline;
1174 int newctrl = acm->ctrlout;
1175
9b80fee1 1176 newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
1da177e4
LT		 1177 newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
1178 newline.bParityType = termios->c_cflag & PARENB ?
6e47e069
AC		 1179 (termios->c_cflag & PARODD ? 1 : 2) +
1180 (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
301a29da
NB		 1181 switch (termios->c_cflag & CSIZE) {
1182 case CS5:
1183 newline.bDataBits = 5;
1184 break;
1185 case CS6:
1186 newline.bDataBits = 6;
1187 break;
1188 case CS7:
1189 newline.bDataBits = 7;
1190 break;
1191 case CS8:
1192 default:
1193 newline.bDataBits = 8;
1194 break;
1195 }
6e47e069 1196 /* FIXME: Needs to clear unsupported bits in the termios */
1da177e4
LT		 1197 acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
1198
2a18a875 1199 if (C_BAUD(tty) == B0) {
1da177e4
LT		 1200 newline.dwDTERate = acm->line.dwDTERate;
1201 newctrl &= ~ACM_CTRL_DTR;
2a18a875 1202 } else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) {
6e47e069 1203 newctrl |= ACM_CTRL_DTR;
2a18a875 1204 }
1da177e4
LT		 1205
1206 if (newctrl != acm->ctrlout)
1207 acm_set_control(acm, acm->ctrlout = newctrl);
1208
1209 if (memcmp(&acm->line, &newline, sizeof newline)) {
1210 memcpy(&acm->line, &newline, sizeof newline);
a5cc7ef9
JH		 1211 dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
1212 __func__,
1213 le32_to_cpu(newline.dwDTERate),
1da177e4
LT		 1214 newline.bCharFormat, newline.bParityType,
1215 newline.bDataBits);
1216 acm_set_line(acm, &acm->line);
1217 }
1218}
1219
7fb57a01
HS		 1220static const struct tty_port_operations acm_port_ops = {
1221 .shutdown = acm_port_shutdown,
1222 .activate = acm_port_activate,
1223 .destruct = acm_port_destruct,
1224};
1225
1da177e4
LT		 1226/*
1227 * USB probe and disconnect routines.
1228 */
1229
830f4021 1230/* Little helpers: write/read buffers free */
884b600f
ON		 1231static void acm_write_buffers_free(struct acm *acm)
1232{
1233 int i;
1234 struct acm_wb *wb;
a496c64f 1235 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
884b600f 1236
6e47e069 1237 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
997ea58e 1238 usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
884b600f
ON		 1239}
1240
830f4021
ON		 1241static void acm_read_buffers_free(struct acm *acm)
1242{
1243 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
dab54c9f 1244 int i;
830f4021 1245
dab54c9f 1246 for (i = 0; i < acm->rx_buflimit; i++)
997ea58e 1247 usb_free_coherent(usb_dev, acm->readsize,
088c64f8 1248 acm->read_buffers[i].base, acm->read_buffers[i].dma);
830f4021
ON		 1249}
1250
884b600f
ON		 1251/* Little helper: write buffers allocate */
1252static int acm_write_buffers_alloc(struct acm *acm)
1253{
1254 int i;
1255 struct acm_wb *wb;
1256
86478944 1257 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
997ea58e 1258 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
884b600f
ON		 1259 &wb->dmah);
1260 if (!wb->buf) {
1261 while (i != 0) {
1262 --i;
1263 --wb;
997ea58e 1264 usb_free_coherent(acm->dev, acm->writesize,
884b600f
ON		 1265 wb->buf, wb->dmah);
1266 }
1267 return -ENOMEM;
1268 }
1269 }
1270 return 0;
1271}
1272
10077d4a
AC		 1273static int acm_probe(struct usb_interface *intf,
1274 const struct usb_device_id *id)
1da177e4
LT		 1275{
1276 struct usb_cdc_union_desc *union_header = NULL;
c4cabd28 1277 struct usb_cdc_country_functional_desc *cfd = NULL;
c6dbf554 1278 unsigned char *buffer = intf->altsetting->extra;
1da177e4
LT		 1279 int buflen = intf->altsetting->extralen;
1280 struct usb_interface *control_interface;
1281 struct usb_interface *data_interface;
a2bfb4a3
ON		 1282 struct usb_endpoint_descriptor *epctrl = NULL;
1283 struct usb_endpoint_descriptor *epread = NULL;
1284 struct usb_endpoint_descriptor *epwrite = NULL;
1da177e4
LT		 1285 struct usb_device *usb_dev = interface_to_usbdev(intf);
1286 struct acm *acm;
1287 int minor;
6e47e069 1288 int ctrlsize, readsize;
1da177e4
LT		 1289 u8 *buf;
1290 u8 ac_management_function = 0;
1291 u8 call_management_function = 0;
1292 int call_interface_num = -1;
fd5054c1 1293 int data_interface_num = -1;
1da177e4 1294 unsigned long quirks;
86478944 1295 int num_rx_buf;
61a87adf 1296 int i;
a2bfb4a3 1297 int combined_interfaces = 0;
c93d8195
AK		 1298 struct device *tty_dev;
1299 int rv = -ENOMEM;
1da177e4 1300
86478944 1301 /* normal quirks */
1da177e4 1302 quirks = (unsigned long)id->driver_info;
16142655
DT		 1303
1304 if (quirks == IGNORE_DEVICE)
1305 return -ENODEV;
1306
86478944
ON		 1307 num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
1308
1309 /* handle quirks deadly to normal probing*/
1da177e4
LT		 1310 if (quirks == NO_UNION_NORMAL) {
1311 data_interface = usb_ifnum_to_if(usb_dev, 1);
1312 control_interface = usb_ifnum_to_if(usb_dev, 0);
d5f08676
ON		 1313 /* we would crash */
1314 if (!data_interface || !control_interface)
1315 return -ENODEV;
1da177e4
LT		 1316 goto skip_normal_probe;
1317 }
6e47e069 1318
1da177e4
LT		 1319 /* normal probing*/
1320 if (!buffer) {
9908a32e 1321 dev_err(&intf->dev, "Weird descriptor references\n");
1da177e4
LT		 1322 return -EINVAL;
1323 }
1324
1325 if (!buflen) {
577045c0
TG		 1326 if (intf->cur_altsetting->endpoint &&
1327 intf->cur_altsetting->endpoint->extralen &&
6e47e069
AC		 1328 intf->cur_altsetting->endpoint->extra) {
1329 dev_dbg(&intf->dev,
1330 "Seeking extra descriptors on endpoint\n");
1da177e4
LT		 1331 buflen = intf->cur_altsetting->endpoint->extralen;
1332 buffer = intf->cur_altsetting->endpoint->extra;
1333 } else {
9908a32e
GKH		 1334 dev_err(&intf->dev,
1335 "Zero length descriptor references\n");
1da177e4
LT		 1336 return -EINVAL;
1337 }
1338 }
1339
1340 while (buflen > 0) {
6e47e069 1341 if (buffer[1] != USB_DT_CS_INTERFACE) {
9908a32e 1342 dev_err(&intf->dev, "skipping garbage\n");
1da177e4
LT		 1343 goto next_desc;
1344 }
1345
6e47e069
AC		 1346 switch (buffer[2]) {
1347 case USB_CDC_UNION_TYPE: /* we've found it */
1348 if (union_header) {
1349 dev_err(&intf->dev, "More than one "
1350 "union descriptor, skipping ...\n");
1351 goto next_desc;
1da177e4 1352 }
6e47e069
AC		 1353 union_header = (struct usb_cdc_union_desc *)buffer;
1354 break;
1355 case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
1356 cfd = (struct usb_cdc_country_functional_desc *)buffer;
1357 break;
1358 case USB_CDC_HEADER_TYPE: /* maybe check version */
1359 break; /* for now we ignore it */
1360 case USB_CDC_ACM_TYPE:
1361 ac_management_function = buffer[3];
1362 break;
1363 case USB_CDC_CALL_MANAGEMENT_TYPE:
1364 call_management_function = buffer[3];
1365 call_interface_num = buffer[4];
02f824ac 1366 if ((quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
6e47e069
AC		 1367 dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
1368 break;
1369 default:
1370 /* there are LOTS more CDC descriptors that
1371 * could legitimately be found here.
1372 */
1373 dev_dbg(&intf->dev, "Ignoring descriptor: "
1374 "type %02x, length %d\n",
1375 buffer[2], buffer[0]);
1376 break;
1377 }
1da177e4
LT		 1378next_desc:
1379 buflen -= buffer[0];
1380 buffer += buffer[0];
1381 }
1382
1383 if (!union_header) {
1384 if (call_interface_num > 0) {
6e47e069 1385 dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
fd5054c1
ES		 1386 /* quirks for Droids MuIn LCD */
1387 if (quirks & NO_DATA_INTERFACE)
1388 data_interface = usb_ifnum_to_if(usb_dev, 0);
1389 else
1390 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
1da177e4
LT		 1391 control_interface = intf;
1392 } else {
a2bfb4a3
ON		 1393 if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
1394 dev_dbg(&intf->dev,"No union descriptor, giving up\n");
1395 return -ENODEV;
1396 } else {
1397 dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
1398 combined_interfaces = 1;
1399 control_interface = data_interface = intf;
1400 goto look_for_collapsed_interface;
1401 }
1da177e4
LT		 1402 }
1403 } else {
1404 control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
1405 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
edefe206
GKH		 1406 }
1407
1408 if (!control_interface || !data_interface) {
1409 dev_dbg(&intf->dev, "no interfaces\n");
1410 return -ENODEV;
1da177e4 1411 }
6e47e069 1412
1da177e4 1413 if (data_interface_num != call_interface_num)
6e47e069 1414 dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
1da177e4 1415
a2bfb4a3
ON		 1416 if (control_interface == data_interface) {
1417 /* some broken devices designed for windows work this way */
1418 dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
1419 combined_interfaces = 1;
1420 /* a popular other OS doesn't use it */
1421 quirks |= NO_CAP_LINE;
1422 if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
1423 dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
1424 return -EINVAL;
1425 }
1426look_for_collapsed_interface:
1427 for (i = 0; i < 3; i++) {
1428 struct usb_endpoint_descriptor *ep;
1429 ep = &data_interface->cur_altsetting->endpoint[i].desc;
1430
1431 if (usb_endpoint_is_int_in(ep))
1432 epctrl = ep;
1433 else if (usb_endpoint_is_bulk_out(ep))
1434 epwrite = ep;
1435 else if (usb_endpoint_is_bulk_in(ep))
1436 epread = ep;
1437 else
1438 return -EINVAL;
1439 }
1440 if (!epctrl || !epread || !epwrite)
1441 return -ENODEV;
1442 else
1443 goto made_compressed_probe;
1444 }
1445
1da177e4
LT		 1446skip_normal_probe:
1447
1448 /*workaround for switched interfaces */
6e47e069
AC		 1449 if (data_interface->cur_altsetting->desc.bInterfaceClass
1450 != CDC_DATA_INTERFACE_TYPE) {
1451 if (control_interface->cur_altsetting->desc.bInterfaceClass
1452 == CDC_DATA_INTERFACE_TYPE) {
1da177e4 1453 struct usb_interface *t;
6e47e069
AC		 1454 dev_dbg(&intf->dev,
1455 "Your device has switched interfaces.\n");
1da177e4
LT		 1456 t = control_interface;
1457 control_interface = data_interface;
1458 data_interface = t;
1459 } else {
1460 return -EINVAL;
1461 }
1462 }
74da5d68
AS		 1463
1464 /* Accept probe requests only for the control interface */
a2bfb4a3 1465 if (!combined_interfaces && intf != control_interface)
74da5d68 1466 return -ENODEV;
6e47e069 1467
a2bfb4a3
ON		 1468 if (!combined_interfaces && usb_interface_claimed(data_interface)) {
1469 /* valid in this context */
6e47e069 1470 dev_dbg(&intf->dev, "The data interface isn't available\n");
1da177e4
LT		 1471 return -EBUSY;
1472 }
1473
1474
99f347ca
SS		 1475 if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 ||
1476 control_interface->cur_altsetting->desc.bNumEndpoints == 0)
1da177e4
LT		 1477 return -EINVAL;
1478
1479 epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
1480 epread = &data_interface->cur_altsetting->endpoint[0].desc;
1481 epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
1482
1483
1484 /* workaround for switched endpoints */
45aea704 1485 if (!usb_endpoint_dir_in(epread)) {
1da177e4
LT		 1486 /* descriptors are swapped */
1487 struct usb_endpoint_descriptor *t;
6e47e069
AC		 1488 dev_dbg(&intf->dev,
1489 "The data interface has switched endpoints\n");
1da177e4
LT		 1490 t = epread;
1491 epread = epwrite;
1492 epwrite = t;
1493 }
a2bfb4a3 1494made_compressed_probe:
a5cc7ef9 1495 dev_dbg(&intf->dev, "interfaces are valid\n");
1da177e4 1496
6e47e069
AC		 1497 acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
1498 if (acm == NULL) {
255ab56c 1499 dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
1da177e4
LT		 1500 goto alloc_fail;
1501 }
1da177e4 1502
7fb57a01
HS		 1503 minor = acm_alloc_minor(acm);
1504 if (minor == ACM_TTY_MINORS) {
1505 dev_err(&intf->dev, "no more free acm devices\n");
1506 kfree(acm);
1507 return -ENODEV;
1508 }
1509
29cc8897
KM		 1510 ctrlsize = usb_endpoint_maxp(epctrl);
1511 readsize = usb_endpoint_maxp(epread) *
6e47e069 1512 (quirks == SINGLE_RX_URB ? 1 : 2);
a2bfb4a3 1513 acm->combined_interfaces = combined_interfaces;
6fa3eb70
S		 1514#ifdef CONFIG_MTK_DT_USB_SUPPORT
1515 acm->writesize = ACM_WB_SZ;
1516#else
29cc8897 1517 acm->writesize = usb_endpoint_maxp(epwrite) * 20;
6fa3eb70 1518#endif
1da177e4
LT		 1519 acm->control = control_interface;
1520 acm->data = data_interface;
1521 acm->minor = minor;
1522 acm->dev = usb_dev;
1523 acm->ctrl_caps = ac_management_function;
a2bfb4a3
ON		 1524 if (quirks & NO_CAP_LINE)
1525 acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
1da177e4
LT		 1526 acm->ctrlsize = ctrlsize;
1527 acm->readsize = readsize;
86478944 1528 acm->rx_buflimit = num_rx_buf;
c4028958 1529 INIT_WORK(&acm->work, acm_softint);
884b600f 1530 spin_lock_init(&acm->write_lock);
61a87adf 1531 spin_lock_init(&acm->read_lock);
1365baf7 1532 mutex_init(&acm->mutex);
cf7fdd57
ON		 1533 acm->is_int_ep = usb_endpoint_xfer_int(epread);
1534 if (acm->is_int_ep)
1535 acm->bInterval = epread->bInterval;
739e0285
AC		 1536 tty_port_init(&acm->port);
1537 acm->port.ops = &acm_port_ops;
67e8477b 1538 init_usb_anchor(&acm->delayed);
1da177e4 1539
997ea58e 1540 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
1da177e4 1541 if (!buf) {
255ab56c 1542 dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
1da177e4
LT		 1543 goto alloc_fail2;
1544 }
1545 acm->ctrl_buffer = buf;
1546
884b600f 1547 if (acm_write_buffers_alloc(acm) < 0) {
255ab56c 1548 dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
1da177e4
LT		 1549 goto alloc_fail4;
1550 }
1da177e4
LT		 1551
1552 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
1553 if (!acm->ctrlurb) {
255ab56c 1554 dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
1da177e4
LT		 1555 goto alloc_fail5;
1556 }
86478944 1557 for (i = 0; i < num_rx_buf; i++) {
088c64f8
JH		 1558 struct acm_rb *rb = &(acm->read_buffers[i]);
1559 struct urb *urb;
61a87adf 1560
74f5e1ba
JH		 1561 rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
1562 &rb->dma);
1563 if (!rb->base) {
1564 dev_err(&intf->dev, "out of memory "
1565 "(read bufs usb_alloc_coherent)\n");
1566 goto alloc_fail6;
1567 }
088c64f8
JH		 1568 rb->index = i;
1569 rb->instance = acm;
74f5e1ba 1570
088c64f8
JH		 1571 urb = usb_alloc_urb(0, GFP_KERNEL);
1572 if (!urb) {
255ab56c 1573 dev_err(&intf->dev,
6e47e069 1574 "out of memory (read urbs usb_alloc_urb)\n");
c2572b78 1575 goto alloc_fail6;
61a87adf 1576 }
088c64f8
JH		 1577 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1578 urb->transfer_dma = rb->dma;
1579 if (acm->is_int_ep) {
1580 usb_fill_int_urb(urb, acm->dev,
d4898081 1581 usb_rcvintpipe(usb_dev, epread->bEndpointAddress),
088c64f8
JH		 1582 rb->base,
1583 acm->readsize,
1584 acm_read_bulk_callback, rb,
1585 acm->bInterval);
1586 } else {
1587 usb_fill_bulk_urb(urb, acm->dev,
d4898081 1588 usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress),
088c64f8
JH		 1589 rb->base,
1590 acm->readsize,
1591 acm_read_bulk_callback, rb);
1592 }
61a87adf 1593
088c64f8
JH		 1594 acm->read_urbs[i] = urb;
1595 __set_bit(i, &acm->read_urbs_free);
61a87adf 1596 }
6e47e069 1597 for (i = 0; i < ACM_NW; i++) {
e4cf3aa8
DE		 1598 struct acm_wb *snd = &(acm->wb[i]);
1599
6e47e069
AC		 1600 snd->urb = usb_alloc_urb(0, GFP_KERNEL);
1601 if (snd->urb == NULL) {
255ab56c 1602 dev_err(&intf->dev,
59d7fec7 1603 "out of memory (write urbs usb_alloc_urb)\n");
74f5e1ba 1604 goto alloc_fail7;
e4cf3aa8
DE		 1605 }
1606
5186ffee
AL		 1607 if (usb_endpoint_xfer_int(epwrite))
1608 usb_fill_int_urb(snd->urb, usb_dev,
c5211187 1609 usb_sndintpipe(usb_dev, epwrite->bEndpointAddress),
5186ffee
AL		 1610 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
1611 else
1612 usb_fill_bulk_urb(snd->urb, usb_dev,
1613 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1614 NULL, acm->writesize, acm_write_bulk, snd);
e4cf3aa8
DE		 1615 snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1616 snd->instance = acm;
1da177e4
LT		 1617 }
1618
6e47e069 1619 usb_set_intfdata(intf, acm);
c4cabd28
ON		 1620
1621 i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
1622 if (i < 0)
74f5e1ba 1623 goto alloc_fail7;
c4cabd28
ON		 1624
1625 if (cfd) { /* export the country data */
1626 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
1627 if (!acm->country_codes)
1628 goto skip_countries;
1629 acm->country_code_size = cfd->bLength - 4;
6e47e069
AC		 1630 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
1631 cfd->bLength - 4);
c4cabd28
ON		 1632 acm->country_rel_date = cfd->iCountryCodeRelDate;
1633
1634 i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
1635 if (i < 0) {
1636 kfree(acm->country_codes);
e7c8e860
JL		 1637 acm->country_codes = NULL;
1638 acm->country_code_size = 0;
c4cabd28
ON		 1639 goto skip_countries;
1640 }
1641
6e47e069
AC		 1642 i = device_create_file(&intf->dev,
1643 &dev_attr_iCountryCodeRelDate);
c4cabd28 1644 if (i < 0) {
c2572b78 1645 device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
c4cabd28 1646 kfree(acm->country_codes);
e7c8e860
JL		 1647 acm->country_codes = NULL;
1648 acm->country_code_size = 0;
c4cabd28
ON		 1649 goto skip_countries;
1650 }
1651 }
1652
1653skip_countries:
6e47e069 1654 usb_fill_int_urb(acm->ctrlurb, usb_dev,
a2bfb4a3
ON		 1655 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
1656 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
1657 /* works around buggy devices */
1658 epctrl->bInterval ? epctrl->bInterval : 0xff);
1da177e4
LT		 1659 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1660 acm->ctrlurb->transfer_dma = acm->ctrl_dma;
1661
1da177e4
LT		 1662 dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
1663
1664 acm_set_control(acm, acm->ctrlout);
1665
1666 acm->line.dwDTERate = cpu_to_le32(9600);
1667 acm->line.bDataBits = 8;
1668 acm_set_line(acm, &acm->line);
1669
1670 usb_driver_claim_interface(&acm_driver, data_interface, acm);
672c4e18 1671 usb_set_intfdata(data_interface, acm);
1da177e4 1672
83ef344a 1673 usb_get_intf(control_interface);
c93d8195 1674 tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor,
734cc178 1675 &control_interface->dev);
c93d8195
AK		 1676 if (IS_ERR(tty_dev)) {
1677 rv = PTR_ERR(tty_dev);
1678 goto alloc_fail8;
1679 }
1da177e4 1680
c4cabd28 1681 return 0;
c93d8195
AK		 1682alloc_fail8:
1683 if (acm->country_codes) {
1684 device_remove_file(&acm->control->dev,
1685 &dev_attr_wCountryCodes);
1686 device_remove_file(&acm->control->dev,
1687 &dev_attr_iCountryCodeRelDate);
b16c4055 1688 kfree(acm->country_codes);
c93d8195
AK		 1689 }
1690 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
74f5e1ba 1691alloc_fail7:
c93d8195 1692 usb_set_intfdata(intf, NULL);
e4cf3aa8
DE		 1693 for (i = 0; i < ACM_NW; i++)
1694 usb_free_urb(acm->wb[i].urb);
c2572b78 1695alloc_fail6:
86478944 1696 for (i = 0; i < num_rx_buf; i++)
088c64f8 1697 usb_free_urb(acm->read_urbs[i]);
74f5e1ba 1698 acm_read_buffers_free(acm);
1da177e4
LT		 1699 usb_free_urb(acm->ctrlurb);
1700alloc_fail5:
884b600f 1701 acm_write_buffers_free(acm);
1da177e4 1702alloc_fail4:
997ea58e 1703 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
1da177e4 1704alloc_fail2:
7fb57a01 1705 acm_release_minor(acm);
1da177e4
LT		 1706 kfree(acm);
1707alloc_fail:
c93d8195 1708 return rv;
1da177e4
LT		 1709}
1710
1365baf7
ON		 1711static void stop_data_traffic(struct acm *acm)
1712{
1713 int i;
a5cc7ef9
JH		 1714
1715 dev_dbg(&acm->control->dev, "%s\n", __func__);
1365baf7 1716
1365baf7 1717 usb_kill_urb(acm->ctrlurb);
6e47e069 1718 for (i = 0; i < ACM_NW; i++)
e4cf3aa8 1719 usb_kill_urb(acm->wb[i].urb);
1365baf7 1720 for (i = 0; i < acm->rx_buflimit; i++)
088c64f8 1721 usb_kill_urb(acm->read_urbs[i]);
1365baf7
ON		 1722
1723 cancel_work_sync(&acm->work);
1724}
1725
1da177e4
LT		 1726static void acm_disconnect(struct usb_interface *intf)
1727{
c4cabd28 1728 struct acm *acm = usb_get_intfdata(intf);
1da177e4 1729 struct usb_device *usb_dev = interface_to_usbdev(intf);
10077d4a 1730 struct tty_struct *tty;
7fb57a01
HS		 1731 int i;
1732
1733 dev_dbg(&intf->dev, "%s\n", __func__);
1da177e4 1734
672c4e18
DB		 1735 /* sibling interface is already cleaning up */
1736 if (!acm)
86067eea 1737 return;
672c4e18 1738
7fb57a01
HS		 1739 mutex_lock(&acm->mutex);
1740 acm->disconnected = true;
6e47e069 1741 if (acm->country_codes) {
74da5d68
AS		 1742 device_remove_file(&acm->control->dev,
1743 &dev_attr_wCountryCodes);
1744 device_remove_file(&acm->control->dev,
1745 &dev_attr_iCountryCodeRelDate);
c4cabd28 1746 }
74da5d68 1747 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
86067eea
ON		 1748 usb_set_intfdata(acm->control, NULL);
1749 usb_set_intfdata(acm->data, NULL);
7fb57a01
HS		 1750 mutex_unlock(&acm->mutex);
1751
1752 tty = tty_port_tty_get(&acm->port);
1753 if (tty) {
1754 tty_vhangup(tty);
1755 tty_kref_put(tty);
1756 }
1da177e4 1757
1365baf7 1758 stop_data_traffic(acm);
1da177e4 1759
cb25505f
JH		 1760 tty_unregister_device(acm_tty_driver, acm->minor);
1761
7fb57a01
HS		 1762 usb_free_urb(acm->ctrlurb);
1763 for (i = 0; i < ACM_NW; i++)
1764 usb_free_urb(acm->wb[i].urb);
1765 for (i = 0; i < acm->rx_buflimit; i++)
1766 usb_free_urb(acm->read_urbs[i]);
884b600f 1767 acm_write_buffers_free(acm);
7fb57a01 1768 usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
830f4021 1769 acm_read_buffers_free(acm);
1da177e4 1770
a2bfb4a3
ON		 1771 if (!acm->combined_interfaces)
1772 usb_driver_release_interface(&acm_driver, intf == acm->control ?
830f4021 1773 acm->data : acm->control);
1da177e4 1774
7fb57a01 1775 tty_port_put(&acm->port);
1da177e4
LT		 1776}
1777
35758589 1778#ifdef CONFIG_PM
1365baf7
ON		 1779static int acm_suspend(struct usb_interface *intf, pm_message_t message)
1780{
1781 struct acm *acm = usb_get_intfdata(intf);
11ea859d
ON		 1782 int cnt;
1783
6fa3eb70 1784 dbg_mtk(&acm->control->dev, "%s intf=%d", __func__, intf->cur_altsetting->desc.bInterfaceNumber);
c5ece482
JH		 1785 spin_lock_irq(&acm->read_lock);
1786 spin_lock(&acm->write_lock);
5b1b0b81 1787 if (PMSG_IS_AUTO(message)) {
c5ece482
JH		 1788 if (acm->transmitting) {
1789 spin_unlock(&acm->write_lock);
1790 spin_unlock_irq(&acm->read_lock);
11ea859d 1791 return -EBUSY;
c5ece482 1792 }
6fa3eb70
S		 1793 }else{
1794 int i;
1795 for (i = 0; i < ACM_NW; i++){
1796 if(acm->wb[i].use){
1797 spin_unlock(&acm->write_lock);
1798 spin_unlock_irq(&acm->read_lock);
1799 return -EBUSY;
1800 }
1801 }
11ea859d 1802 }
6fa3eb70 1803
11ea859d
ON		 1804 cnt = acm->susp_count++;
1805 spin_unlock(&acm->write_lock);
1806 spin_unlock_irq(&acm->read_lock);
1365baf7 1807
11ea859d 1808 if (cnt)
1365baf7 1809 return 0;
1365baf7 1810
52c84b33 1811 stop_data_traffic(acm);
1365baf7 1812
1365baf7
ON		 1813 return 0;
1814}
1815
1816static int acm_resume(struct usb_interface *intf)
1817{
1818 struct acm *acm = usb_get_intfdata(intf);
67e8477b 1819 struct urb *urb;
1365baf7
ON		 1820 int rv = 0;
1821
6fa3eb70
S		 1822 dbg_mtk(&acm->control->dev, "%s intf=%d", __func__, intf->cur_altsetting->desc.bInterfaceNumber);
1823
11ea859d 1824 spin_lock_irq(&acm->read_lock);
1b3fe006 1825 spin_lock(&acm->write_lock);
11ea859d 1826
1b3fe006
JH		 1827 if (--acm->susp_count)
1828 goto out;
1365baf7 1829
7fb57a01 1830 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
1b3fe006 1831 rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC);
97d35f95 1832
67e8477b
JH		 1833 for (;;) {
1834 urb = usb_get_from_anchor(&acm->delayed);
1835 if (!urb)
1836 break;
1837
1838 acm_start_wb(acm, urb->context);
97d35f95
ON		 1839 }
1840
1841 /*
1842 * delayed error checking because we must
1843 * do the write path at all cost
1844 */
6fa3eb70
S		 1845 if (rv < 0){
1846 MYDBG("urb fail:%d\n", rv);
1b3fe006 1847 goto out;
6fa3eb70 1848 }
1365baf7 1849
1b3fe006 1850 rv = acm_submit_read_urbs(acm, GFP_ATOMIC);
1365baf7 1851 }
1b3fe006
JH		 1852out:
1853 spin_unlock(&acm->write_lock);
1854 spin_unlock_irq(&acm->read_lock);
1365baf7 1855
1365baf7
ON		 1856 return rv;
1857}
35758589 1858
a91b0c50
FL		 1859static int acm_reset_resume(struct usb_interface *intf)
1860{
1861 struct acm *acm = usb_get_intfdata(intf);
a91b0c50 1862
aa27a094
JS		 1863 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags))
1864 tty_port_tty_hangup(&acm->port, false);
7fb57a01 1865
a91b0c50
FL		 1866 return acm_resume(intf);
1867}
1868
35758589 1869#endif /* CONFIG_PM */
c1479a92
AT		 1870
1871#define NOKIA_PCSUITE_ACM_INFO(x) \
1872 USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
1873 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1874 USB_CDC_ACM_PROTO_VENDOR)
1875
4035e456
TG		 1876#define SAMSUNG_PCSUITE_ACM_INFO(x) \
1877 USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \
1878 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1879 USB_CDC_ACM_PROTO_VENDOR)
1880
1da177e4
LT		 1881/*
1882 * USB driver structure.
1883 */
1884
6ef4852b 1885static const struct usb_device_id acm_ids[] = {
1da177e4 1886 /* quirky and broken devices */
522a78be
DC		 1887 { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */
1888 .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */
1da177e4
LT		 1889 { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
1890 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1891 },
b0e2a705
AA		 1892 { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
1893 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1894 },
0f9c7b4a
AL		 1895 { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
1896 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1897 },
8753e65e
MO		 1898 { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
1899 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1900 },
91a9c921
CM		 1901 { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
1902 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1903 },
7abcf20b
AC		 1904 { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
1905 .driver_info = SINGLE_RX_URB,
1906 },
86478944
ON		 1907 { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
1908 .driver_info = SINGLE_RX_URB, /* firmware bug */
1909 },
3dd2ae81
ON		 1910 { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
1911 .driver_info = SINGLE_RX_URB, /* firmware bug */
1912 },
9be8456c
ON		 1913 { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
1914 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1915 },
6149ed5e
IM		 1916 { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
1917 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1918 },
c8fd2c37
ES		 1919 { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
1920 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1921 },
c89c60e9
AC		 1922 { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
1923 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1924 },
cab98a0a
XK		 1925 { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
1926 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1927 },
1e2dedaa 1928 { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */
155df65a
DT		 1929 { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
1930 },
6abff5dc
KH		 1931 /* Motorola H24 HSPA module: */
1932 { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */
ed37e0cb
MU		 1933 { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */
1934 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1935 },
1936 { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */
1937 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1938 },
1939 { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */
1940 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1941 },
1942 { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */
1943 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1944 },
1945 { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */
1946 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1947 },
1948 { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */
1949 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1950 },
1951 { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */
1952 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1953 },
6abff5dc 1954
c332b4e1
AR		 1955 { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
1956 .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
1957 data interface instead of
1958 communications interface.
1959 Maybe we should define a new
1960 quirk for this. */
1961 },
e7d491a1
JCR		 1962 { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */
1963 .driver_info = NO_UNION_NORMAL,
1964 },
036915a7
DL		 1965 { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */
1966 .driver_info = NO_UNION_NORMAL,
1967 },
1f17c502
KK		 1968 { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
1969 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1970 },
c3baa19b
RN		 1971 { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
1972 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1973 },
9be8456c 1974
c1479a92
AT		 1975 /* Nokia S60 phones expose two ACM channels. The first is
1976 * a modem and is picked up by the standard AT-command
1977 * information below. The second is 'vendor-specific' but
1978 * is treated as a serial device at the S60 end, so we want
1979 * to expose it on Linux too. */
1980 { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
1981 { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
1982 { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
1983 { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
1984 { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
1985 { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
1986 { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
1987 { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
1988 { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
1989 { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
1990 { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
1991 { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
1992 { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
1993 { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
1994 { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
1995 { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
1996 { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
1997 { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */
1998 { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
1999 { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
2000 { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
2001 { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */
2002 { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
2003 { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
2004 { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
2005 { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
2006 { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
2007 { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
2008 { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
2009 { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
2010 { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
2011 { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */
2012 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
2013 { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
2014 { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
2015 { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
2016 { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
2017 { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
2018 { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
2019 { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
2020 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
2021 { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
2022 { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
83a4eae9 2023 { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
4035e456
TG		 2024 { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */
2025 { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */
2026 { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */
2027 { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */
2028 { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */
2029 { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */
2030 { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */
2031 { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */
2032 { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */
2033 { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */
721d92fc 2034 { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */
4061fde2
TG		 2035 { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */
2036 { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */
4035e456 2037 { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
c1479a92 2038
65e52f41
DP		 2039 /* Support for Owen devices */
2040 { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */
2041
c1479a92
AT		 2042 /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
2043
7c5d8c39 2044 /* Support Lego NXT using pbLua firmware */
ce126644
JC		 2045 { USB_DEVICE(0x0694, 0xff00),
2046 .driver_info = NOT_A_MODEM,
7893afc0 2047 },
7c5d8c39 2048
fd5054c1
ES		 2049 /* Support for Droids MuIn LCD */
2050 { USB_DEVICE(0x04d8, 0x000b),
2051 .driver_info = NO_DATA_INTERFACE,
2052 },
2053
16142655
DT		 2054#if IS_ENABLED(CONFIG_INPUT_IMS_PCU)
2055 { USB_DEVICE(0x04d8, 0x0082), /* Application mode */
2056 .driver_info = IGNORE_DEVICE,
2057 },
2058 { USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */
2059 .driver_info = IGNORE_DEVICE,
2060 },
2061#endif
2062
eb80decb
ON		 2063 /*Samsung phone in firmware update mode */
2064 { USB_DEVICE(0x04e8, 0x685d),
2065 .driver_info = IGNORE_DEVICE,
2066 },
2067
7f877278
JJ		 2068 /* Exclude Infineon Flash Loader utility */
2069 { USB_DEVICE(0x058b, 0x0041),
2070 .driver_info = IGNORE_DEVICE,
2071 },
2072
5b239f0a
PC		 2073 /* control interfaces without any protocol set */
2074 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
2075 USB_CDC_PROTO_NONE) },
2076
1da177e4
LT		 2077 /* control interfaces with various AT-command sets */
2078 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
2079 USB_CDC_ACM_PROTO_AT_V25TER) },
2080 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
2081 USB_CDC_ACM_PROTO_AT_PCCA101) },
2082 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
2083 USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
2084 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
2085 USB_CDC_ACM_PROTO_AT_GSM) },
2086 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
6e47e069 2087 USB_CDC_ACM_PROTO_AT_3G) },
1da177e4
LT		 2088 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
2089 USB_CDC_ACM_PROTO_AT_CDMA) },
2090
1da177e4
LT		 2091 { }
2092};
2093
6e47e069 2094MODULE_DEVICE_TABLE(usb, acm_ids);
1da177e4
LT		 2095
2096static struct usb_driver acm_driver = {
1da177e4
LT		 2097 .name = "cdc_acm",
2098 .probe = acm_probe,
2099 .disconnect = acm_disconnect,
35758589 2100#ifdef CONFIG_PM
1365baf7
ON		 2101 .suspend = acm_suspend,
2102 .resume = acm_resume,
a91b0c50 2103 .reset_resume = acm_reset_resume,
35758589 2104#endif
1da177e4 2105 .id_table = acm_ids,
35758589 2106#ifdef CONFIG_PM
1365baf7 2107 .supports_autosuspend = 1,
35758589 2108#endif
e1f12eb6 2109 .disable_hub_initiated_lpm = 1,
1da177e4
LT		 2110};
2111
2112/*
2113 * TTY driver structures.
2114 */
2115
b68e31d0 2116static const struct tty_operations acm_ops = {
7fb57a01 2117 .install = acm_tty_install,
1da177e4
LT		 2118 .open = acm_tty_open,
2119 .close = acm_tty_close,
7fb57a01 2120 .cleanup = acm_tty_cleanup,
10077d4a 2121 .hangup = acm_tty_hangup,
1da177e4
LT		 2122 .write = acm_tty_write,
2123 .write_room = acm_tty_write_room,
2124 .ioctl = acm_tty_ioctl,
2125 .throttle = acm_tty_throttle,
2126 .unthrottle = acm_tty_unthrottle,
2127 .chars_in_buffer = acm_tty_chars_in_buffer,
2128 .break_ctl = acm_tty_break_ctl,
2129 .set_termios = acm_tty_set_termios,
2130 .tiocmget = acm_tty_tiocmget,
2131 .tiocmset = acm_tty_tiocmset,
2132};
2133
2134/*
2135 * Init / exit.
2136 */
2137
2138static int __init acm_init(void)
2139{
2140 int retval;
6fa3eb70
S		 2141#ifdef CONFIG_MTK_DT_USB_SUPPORT
2142 int i;
2143#endif
1da177e4
LT		 2144 acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
2145 if (!acm_tty_driver)
2146 return -ENOMEM;
1da177e4
LT		 2147 acm_tty_driver->driver_name = "acm",
2148 acm_tty_driver->name = "ttyACM",
1da177e4
LT		 2149 acm_tty_driver->major = ACM_TTY_MAJOR,
2150 acm_tty_driver->minor_start = 0,
2151 acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
2152 acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
331b8319 2153 acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
1da177e4 2154 acm_tty_driver->init_termios = tty_std_termios;
6e47e069
AC		 2155 acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
2156 HUPCL | CLOCAL;
6fa3eb70
S		 2157#ifdef CONFIG_MTK_DT_USB_SUPPORT
2158 /* wx, disable echo and other flags in the very beginning.
2159 * otherwise RILD will disable them via calling tcsetattr() after it opened tty port,
2160 * so there may be a gap between port opening and calling tcsetattr(). If modem send data
2161 * at that time, things goes ugly.
2162 */
2163 acm_tty_driver->init_termios.c_iflag = 0;
2164 acm_tty_driver->init_termios.c_oflag = 0;
2165 acm_tty_driver->init_termios.c_lflag = 0;
2166 for(i= 0; i < CB_NUM ; i++){
2167 callback_check_timeout[i] = jiffies;
2168 }
2169#endif
1da177e4
LT		 2170 tty_set_operations(acm_tty_driver, &acm_ops);
2171
2172 retval = tty_register_driver(acm_tty_driver);
2173 if (retval) {
2174 put_tty_driver(acm_tty_driver);
2175 return retval;
2176 }
2177
2178 retval = usb_register(&acm_driver);
2179 if (retval) {
2180 tty_unregister_driver(acm_tty_driver);
2181 put_tty_driver(acm_tty_driver);
2182 return retval;
2183 }
2184
a2c7b935 2185 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
1da177e4
LT		 2186
2187 return 0;
2188}
2189
2190static void __exit acm_exit(void)
2191{
2192 usb_deregister(&acm_driver);
2193 tty_unregister_driver(acm_tty_driver);
2194 put_tty_driver(acm_tty_driver);
2195}
2196
2197module_init(acm_init);
2198module_exit(acm_exit);
6fa3eb70
S		 2199#ifdef CONFIG_MTK_DT_USB_SUPPORT
2200module_param(enable_debug, int, 0644);
2201module_param(enable_dump, int, 0644);
2202#endif
1da177e4 2203
6e47e069
AC		 2204MODULE_AUTHOR(DRIVER_AUTHOR);
2205MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4 2206MODULE_LICENSE("GPL");
e766aeb8 2207MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);
kernel source for telekom puls (alcatel/mediatek)