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[PATCH] USB: more device IDs for Option card driver
[usb.git] / drivers / usb / serial / option.c
blob616bea8df5394a10b7dc3f17d9e1d84524b13920
1 /*
2 Option Card (PCMCIA to) USB to Serial Driver
3
4 Copyright (C) 2005 Matthias Urlichs <smurf@smurf.noris.de>
5
6 This driver is free software; you can redistribute it and/or modify
7 it under the terms of Version 2 of the GNU General Public License as
8 published by the Free Software Foundation.
9
10 Portions copied from the Keyspan driver by Hugh Blemings <hugh@blemings.org>
11
12 History:
13
14 2005-05-19 v0.1 Initial version, based on incomplete docs
15 and analysis of misbehavior with the standard driver
16 2005-05-20 v0.2 Extended the input buffer to avoid losing
17 random 64-byte chunks of data
18 2005-05-21 v0.3 implemented chars_in_buffer()
19 turned on low_latency
20 simplified the code somewhat
21 2005-05-24 v0.4 option_write() sometimes deadlocked under heavy load
22 removed some dead code
23 added sponsor notice
24 coding style clean-up
25 2005-06-20 v0.4.1 add missing braces :-/
26 killed end-of-line whitespace
27 2005-07-15 v0.4.2 rename WLAN product to FUSION, add FUSION2
28 2005-09-10 v0.4.3 added HUAWEI E600 card and Audiovox AirCard
29
30 Work sponsored by: Sigos GmbH, Germany <info@sigos.de>
31
32 */
33
34 #define DRIVER_VERSION "v0.4"
35 #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>"
36 #define DRIVER_DESC "Option Card (PC-Card to) USB to Serial Driver"
37
38 #include <linux/config.h>
39 #include <linux/kernel.h>
40 #include <linux/jiffies.h>
41 #include <linux/errno.h>
42 #include <linux/tty.h>
43 #include <linux/tty_flip.h>
44 #include <linux/module.h>
45 #include <linux/usb.h>
46 #include "usb-serial.h"
47
48 /* Function prototypes */
49 static int option_open(struct usb_serial_port *port, struct file *filp);
50 static void option_close(struct usb_serial_port *port, struct file *filp);
51 static int option_startup(struct usb_serial *serial);
52 static void option_shutdown(struct usb_serial *serial);
53 static void option_rx_throttle(struct usb_serial_port *port);
54 static void option_rx_unthrottle(struct usb_serial_port *port);
55 static int option_write_room(struct usb_serial_port *port);
56
57 static void option_instat_callback(struct urb *urb, struct pt_regs *regs);
58
59 static int option_write(struct usb_serial_port *port,
60 const unsigned char *buf, int count);
61
62 static int option_chars_in_buffer(struct usb_serial_port *port);
63 static int option_ioctl(struct usb_serial_port *port, struct file *file,
64 unsigned int cmd, unsigned long arg);
65 static void option_set_termios(struct usb_serial_port *port,
66 struct termios *old);
67 static void option_break_ctl(struct usb_serial_port *port, int break_state);
68 static int option_tiocmget(struct usb_serial_port *port, struct file *file);
69 static int option_tiocmset(struct usb_serial_port *port, struct file *file,
70 unsigned int set, unsigned int clear);
71 static int option_send_setup(struct usb_serial_port *port);
72
73 /* Vendor and product IDs */
74 #define OPTION_VENDOR_ID 0x0AF0
75 #define HUAWEI_VENDOR_ID 0x12D1
76 #define AUDIOVOX_VENDOR_ID 0x0F3D
77
78 #define OPTION_PRODUCT_OLD 0x5000
79 #define OPTION_PRODUCT_FUSION 0x6000
80 #define OPTION_PRODUCT_FUSION2 0x6300
81 #define HUAWEI_PRODUCT_E600 0x1001
82 #define AUDIOVOX_PRODUCT_AIRCARD 0x0112
83
84 static struct usb_device_id option_ids[] = {
85 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) },
86 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) },
87 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) },
88 { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) },
89 { USB_DEVICE(AUDIOVOX_VENDOR_ID, AUDIOVOX_PRODUCT_AIRCARD) },
90 { } /* Terminating entry */
91 };
92
93 MODULE_DEVICE_TABLE(usb, option_ids);
94
95 static struct usb_driver option_driver = {
96 .owner = THIS_MODULE,
97 .name = "option",
98 .probe = usb_serial_probe,
99 .disconnect = usb_serial_disconnect,
100 .id_table = option_ids,
101 };
102
103 /* The card has three separate interfaces, wich the serial driver
104 * recognizes separately, thus num_port=1.
105 */
106 static struct usb_serial_device_type option_3port_device = {
107 .owner = THIS_MODULE,
108 .name = "Option 3G data card",
109 .short_name = "option",
110 .id_table = option_ids,
111 .num_interrupt_in = NUM_DONT_CARE,
112 .num_bulk_in = NUM_DONT_CARE,
113 .num_bulk_out = NUM_DONT_CARE,
114 .num_ports = 1, /* 3, but the card reports its ports separately */
115 .open = option_open,
116 .close = option_close,
117 .write = option_write,
118 .write_room = option_write_room,
119 .chars_in_buffer = option_chars_in_buffer,
120 .throttle = option_rx_throttle,
121 .unthrottle = option_rx_unthrottle,
122 .ioctl = option_ioctl,
123 .set_termios = option_set_termios,
124 .break_ctl = option_break_ctl,
125 .tiocmget = option_tiocmget,
126 .tiocmset = option_tiocmset,
127 .attach = option_startup,
128 .shutdown = option_shutdown,
129 .read_int_callback = option_instat_callback,
130 };
131
132 #ifdef CONFIG_USB_DEBUG
133 static int debug;
134 #else
135 #define debug 0
136 #endif
137
138 /* per port private data */
139
140 #define N_IN_URB 4
141 #define N_OUT_URB 1
142 #define IN_BUFLEN 1024
143 #define OUT_BUFLEN 128
144
145 struct option_port_private {
146 /* Input endpoints and buffer for this port */
147 struct urb *in_urbs[N_IN_URB];
148 char in_buffer[N_IN_URB][IN_BUFLEN];
149 /* Output endpoints and buffer for this port */
150 struct urb *out_urbs[N_OUT_URB];
151 char out_buffer[N_OUT_URB][OUT_BUFLEN];
152
153 /* Settings for the port */
154 int rts_state; /* Handshaking pins (outputs) */
155 int dtr_state;
156 int cts_state; /* Handshaking pins (inputs) */
157 int dsr_state;
158 int dcd_state;
159 int ri_state;
160
161 unsigned long tx_start_time[N_OUT_URB];
162 };
163
164 /* Functions used by new usb-serial code. */
165 static int __init option_init(void)
166 {
167 int retval;
168 retval = usb_serial_register(&option_3port_device);
169 if (retval)
170 goto failed_3port_device_register;
171 retval = usb_register(&option_driver);
172 if (retval)
173 goto failed_driver_register;
174
175 info(DRIVER_DESC ": " DRIVER_VERSION);
176
177 return 0;
178
179 failed_driver_register:
180 usb_serial_deregister (&option_3port_device);
181 failed_3port_device_register:
182 return retval;
183 }
184
185 static void __exit option_exit(void)
186 {
187 usb_deregister (&option_driver);
188 usb_serial_deregister (&option_3port_device);
189 }
190
191 module_init(option_init);
192 module_exit(option_exit);
193
194 static void option_rx_throttle(struct usb_serial_port *port)
195 {
196 dbg("%s", __FUNCTION__);
197 }
198
199 static void option_rx_unthrottle(struct usb_serial_port *port)
200 {
201 dbg("%s", __FUNCTION__);
202 }
203
204 static void option_break_ctl(struct usb_serial_port *port, int break_state)
205 {
206 /* Unfortunately, I don't know how to send a break */
207 dbg("%s", __FUNCTION__);
208 }
209
210 static void option_set_termios(struct usb_serial_port *port,
211 struct termios *old_termios)
212 {
213 dbg("%s", __FUNCTION__);
214
215 option_send_setup(port);
216 }
217
218 static int option_tiocmget(struct usb_serial_port *port, struct file *file)
219 {
220 unsigned int value;
221 struct option_port_private *portdata;
222
223 portdata = usb_get_serial_port_data(port);
224
225 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
226 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
227 ((portdata->cts_state) ? TIOCM_CTS : 0) |
228 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
229 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
230 ((portdata->ri_state) ? TIOCM_RNG : 0);
231
232 return value;
233 }
234
235 static int option_tiocmset(struct usb_serial_port *port, struct file *file,
236 unsigned int set, unsigned int clear)
237 {
238 struct option_port_private *portdata;
239
240 portdata = usb_get_serial_port_data(port);
241
242 if (set & TIOCM_RTS)
243 portdata->rts_state = 1;
244 if (set & TIOCM_DTR)
245 portdata->dtr_state = 1;
246
247 if (clear & TIOCM_RTS)
248 portdata->rts_state = 0;
249 if (clear & TIOCM_DTR)
250 portdata->dtr_state = 0;
251 return option_send_setup(port);
252 }
253
254 static int option_ioctl(struct usb_serial_port *port, struct file *file,
255 unsigned int cmd, unsigned long arg)
256 {
257 return -ENOIOCTLCMD;
258 }
259
260 /* Write */
261 static int option_write(struct usb_serial_port *port,
262 const unsigned char *buf, int count)
263 {
264 struct option_port_private *portdata;
265 int i;
266 int left, todo;
267 struct urb *this_urb = NULL; /* spurious */
268 int err;
269
270 portdata = usb_get_serial_port_data(port);
271
272 dbg("%s: write (%d chars)", __FUNCTION__, count);
273
274 i = 0;
275 left = count;
276 for (i=0; left > 0 && i < N_OUT_URB; i++) {
277 todo = left;
278 if (todo > OUT_BUFLEN)
279 todo = OUT_BUFLEN;
280
281 this_urb = portdata->out_urbs[i];
282 if (this_urb->status == -EINPROGRESS) {
283 if (time_before(jiffies,
284 portdata->tx_start_time[i] + 10 * HZ))
285 continue;
286 usb_unlink_urb(this_urb);
287 continue;
288 }
289 if (this_urb->status != 0)
290 dbg("usb_write %p failed (err=%d)",
291 this_urb, this_urb->status);
292
293 dbg("%s: endpoint %d buf %d", __FUNCTION__,
294 usb_pipeendpoint(this_urb->pipe), i);
295
296 /* send the data */
297 memcpy (this_urb->transfer_buffer, buf, todo);
298 this_urb->transfer_buffer_length = todo;
299
300 this_urb->dev = port->serial->dev;
301 err = usb_submit_urb(this_urb, GFP_ATOMIC);
302 if (err) {
303 dbg("usb_submit_urb %p (write bulk) failed "
304 "(%d, has %d)", this_urb,
305 err, this_urb->status);
306 continue;
307 }
308 portdata->tx_start_time[i] = jiffies;
309 buf += todo;
310 left -= todo;
311 }
312
313 count -= left;
314 dbg("%s: wrote (did %d)", __FUNCTION__, count);
315 return count;
316 }
317
318 static void option_indat_callback(struct urb *urb, struct pt_regs *regs)
319 {
320 int i, err;
321 int endpoint;
322 struct usb_serial_port *port;
323 struct tty_struct *tty;
324 unsigned char *data = urb->transfer_buffer;
325
326 dbg("%s: %p", __FUNCTION__, urb);
327
328 endpoint = usb_pipeendpoint(urb->pipe);
329 port = (struct usb_serial_port *) urb->context;
330
331 if (urb->status) {
332 dbg("%s: nonzero status: %d on endpoint %02x.",
333 __FUNCTION__, urb->status, endpoint);
334 } else {
335 tty = port->tty;
336 if (urb->actual_length) {
337 for (i = 0; i < urb->actual_length ; ++i) {
338 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
339 tty_flip_buffer_push(tty);
340 tty_insert_flip_char(tty, data[i], 0);
341 }
342 tty_flip_buffer_push(tty);
343 } else {
344 dbg("%s: empty read urb received", __FUNCTION__);
345 }
346
347 /* Resubmit urb so we continue receiving */
348 if (port->open_count && urb->status != -ESHUTDOWN) {
349 err = usb_submit_urb(urb, GFP_ATOMIC);
350 if (err)
351 printk(KERN_ERR "%s: resubmit read urb failed. "
352 "(%d)", __FUNCTION__, err);
353 }
354 }
355 return;
356 }
357
358 static void option_outdat_callback(struct urb *urb, struct pt_regs *regs)
359 {
360 struct usb_serial_port *port;
361
362 dbg("%s", __FUNCTION__);
363
364 port = (struct usb_serial_port *) urb->context;
365
366 if (port->open_count)
367 schedule_work(&port->work);
368 }
369
370 static void option_instat_callback(struct urb *urb, struct pt_regs *regs)
371 {
372 int err;
373 struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
374 struct option_port_private *portdata = usb_get_serial_port_data(port);
375 struct usb_serial *serial = port->serial;
376
377 dbg("%s", __FUNCTION__);
378 dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
379
380 if (urb->status == 0) {
381 struct usb_ctrlrequest *req_pkt =
382 (struct usb_ctrlrequest *)urb->transfer_buffer;
383
384 if (!req_pkt) {
385 dbg("%s: NULL req_pkt\n", __FUNCTION__);
386 return;
387 }
388 if ((req_pkt->bRequestType == 0xA1) &&
389 (req_pkt->bRequest == 0x20)) {
390 int old_dcd_state;
391 unsigned char signals = *((unsigned char *)
392 urb->transfer_buffer +
393 sizeof(struct usb_ctrlrequest));
394
395 dbg("%s: signal x%x", __FUNCTION__, signals);
396
397 old_dcd_state = portdata->dcd_state;
398 portdata->cts_state = 1;
399 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
400 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
401 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
402
403 if (port->tty && !C_CLOCAL(port->tty) &&
404 old_dcd_state && !portdata->dcd_state)
405 tty_hangup(port->tty);
406 } else {
407 dbg("%s: type %x req %x", __FUNCTION__,
408 req_pkt->bRequestType,req_pkt->bRequest);
409 }
410 } else
411 dbg("%s: error %d", __FUNCTION__, urb->status);
412
413 /* Resubmit urb so we continue receiving IRQ data */
414 if (urb->status != -ESHUTDOWN) {
415 urb->dev = serial->dev;
416 err = usb_submit_urb(urb, GFP_ATOMIC);
417 if (err)
418 dbg("%s: resubmit intr urb failed. (%d)",
419 __FUNCTION__, err);
420 }
421 }
422
423 static int option_write_room(struct usb_serial_port *port)
424 {
425 struct option_port_private *portdata;
426 int i;
427 int data_len = 0;
428 struct urb *this_urb;
429
430 portdata = usb_get_serial_port_data(port);
431
432 for (i=0; i < N_OUT_URB; i++) {
433 this_urb = portdata->out_urbs[i];
434 if (this_urb && this_urb->status != -EINPROGRESS)
435 data_len += OUT_BUFLEN;
436 }
437
438 dbg("%s: %d", __FUNCTION__, data_len);
439 return data_len;
440 }
441
442 static int option_chars_in_buffer(struct usb_serial_port *port)
443 {
444 struct option_port_private *portdata;
445 int i;
446 int data_len = 0;
447 struct urb *this_urb;
448
449 portdata = usb_get_serial_port_data(port);
450
451 for (i=0; i < N_OUT_URB; i++) {
452 this_urb = portdata->out_urbs[i];
453 if (this_urb && this_urb->status == -EINPROGRESS)
454 data_len += this_urb->transfer_buffer_length;
455 }
456 dbg("%s: %d", __FUNCTION__, data_len);
457 return data_len;
458 }
459
460 static int option_open(struct usb_serial_port *port, struct file *filp)
461 {
462 struct option_port_private *portdata;
463 struct usb_serial *serial = port->serial;
464 int i, err;
465 struct urb *urb;
466
467 portdata = usb_get_serial_port_data(port);
468
469 dbg("%s", __FUNCTION__);
470
471 /* Set some sane defaults */
472 portdata->rts_state = 1;
473 portdata->dtr_state = 1;
474
475 /* Reset low level data toggle and start reading from endpoints */
476 for (i = 0; i < N_IN_URB; i++) {
477 urb = portdata->in_urbs[i];
478 if (! urb)
479 continue;
480 if (urb->dev != serial->dev) {
481 dbg("%s: dev %p != %p", __FUNCTION__,
482 urb->dev, serial->dev);
483 continue;
484 }
485
486 /*
487 * make sure endpoint data toggle is synchronized with the
488 * device
489 */
490 usb_clear_halt(urb->dev, urb->pipe);
491
492 err = usb_submit_urb(urb, GFP_KERNEL);
493 if (err) {
494 dbg("%s: submit urb %d failed (%d) %d",
495 __FUNCTION__, i, err,
496 urb->transfer_buffer_length);
497 }
498 }
499
500 /* Reset low level data toggle on out endpoints */
501 for (i = 0; i < N_OUT_URB; i++) {
502 urb = portdata->out_urbs[i];
503 if (! urb)
504 continue;
505 urb->dev = serial->dev;
506 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
507 usb_pipeout(urb->pipe), 0); */
508 }
509
510 port->tty->low_latency = 1;
511
512 option_send_setup(port);
513
514 return (0);
515 }
516
517 static inline void stop_urb(struct urb *urb)
518 {
519 if (urb && urb->status == -EINPROGRESS)
520 usb_kill_urb(urb);
521 }
522
523 static void option_close(struct usb_serial_port *port, struct file *filp)
524 {
525 int i;
526 struct usb_serial *serial = port->serial;
527 struct option_port_private *portdata;
528
529 dbg("%s", __FUNCTION__);
530 portdata = usb_get_serial_port_data(port);
531
532 portdata->rts_state = 0;
533 portdata->dtr_state = 0;
534
535 if (serial->dev) {
536 option_send_setup(port);
537
538 /* Stop reading/writing urbs */
539 for (i = 0; i < N_IN_URB; i++)
540 stop_urb(portdata->in_urbs[i]);
541 for (i = 0; i < N_OUT_URB; i++)
542 stop_urb(portdata->out_urbs[i]);
543 }
544 port->tty = NULL;
545 }
546
547 /* Helper functions used by option_setup_urbs */
548 static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint,
549 int dir, void *ctx, char *buf, int len,
550 void (*callback)(struct urb *, struct pt_regs *regs))
551 {
552 struct urb *urb;
553
554 if (endpoint == -1)
555 return NULL; /* endpoint not needed */
556
557 urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
558 if (urb == NULL) {
559 dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint);
560 return NULL;
561 }
562
563 /* Fill URB using supplied data. */
564 usb_fill_bulk_urb(urb, serial->dev,
565 usb_sndbulkpipe(serial->dev, endpoint) | dir,
566 buf, len, callback, ctx);
567
568 return urb;
569 }
570
571 /* Setup urbs */
572 static void option_setup_urbs(struct usb_serial *serial)
573 {
574 int j;
575 struct usb_serial_port *port;
576 struct option_port_private *portdata;
577
578 dbg("%s", __FUNCTION__);
579
580 port = serial->port[0];
581 portdata = usb_get_serial_port_data(port);
582
583 /* Do indat endpoints first */
584 for (j = 0; j <= N_IN_URB; ++j) {
585 portdata->in_urbs[j] = option_setup_urb (serial,
586 port->bulk_in_endpointAddress, USB_DIR_IN, port,
587 portdata->in_buffer[j], IN_BUFLEN, option_indat_callback);
588 }
589
590 /* outdat endpoints */
591 for (j = 0; j <= N_OUT_URB; ++j) {
592 portdata->out_urbs[j] = option_setup_urb (serial,
593 port->bulk_out_endpointAddress, USB_DIR_OUT, port,
594 portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback);
595 }
596 }
597
598 static int option_send_setup(struct usb_serial_port *port)
599 {
600 struct usb_serial *serial = port->serial;
601 struct option_port_private *portdata;
602
603 dbg("%s", __FUNCTION__);
604
605 portdata = usb_get_serial_port_data(port);
606
607 if (port->tty) {
608 int val = 0;
609 if (portdata->dtr_state)
610 val |= 0x01;
611 if (portdata->rts_state)
612 val |= 0x02;
613
614 return usb_control_msg(serial->dev,
615 usb_rcvctrlpipe(serial->dev, 0),
616 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
617 }
618
619 return 0;
620 }
621
622 static int option_startup(struct usb_serial *serial)
623 {
624 int i, err;
625 struct usb_serial_port *port;
626 struct option_port_private *portdata;
627
628 dbg("%s", __FUNCTION__);
629
630 /* Now setup per port private data */
631 for (i = 0; i < serial->num_ports; i++) {
632 port = serial->port[i];
633 portdata = kmalloc(sizeof(*portdata), GFP_KERNEL);
634 if (!portdata) {
635 dbg("%s: kmalloc for option_port_private (%d) failed!.",
636 __FUNCTION__, i);
637 return (1);
638 }
639 memset(portdata, 0, sizeof(struct option_port_private));
640
641 usb_set_serial_port_data(port, portdata);
642
643 if (! port->interrupt_in_urb)
644 continue;
645 err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
646 if (err)
647 dbg("%s: submit irq_in urb failed %d",
648 __FUNCTION__, err);
649 }
650
651 option_setup_urbs(serial);
652
653 return (0);
654 }
655
656 static void option_shutdown(struct usb_serial *serial)
657 {
658 int i, j;
659 struct usb_serial_port *port;
660 struct option_port_private *portdata;
661
662 dbg("%s", __FUNCTION__);
663
664 /* Stop reading/writing urbs */
665 for (i = 0; i < serial->num_ports; ++i) {
666 port = serial->port[i];
667 portdata = usb_get_serial_port_data(port);
668 for (j = 0; j < N_IN_URB; j++)
669 stop_urb(portdata->in_urbs[j]);
670 for (j = 0; j < N_OUT_URB; j++)
671 stop_urb(portdata->out_urbs[j]);
672 }
673
674 /* Now free them */
675 for (i = 0; i < serial->num_ports; ++i) {
676 port = serial->port[i];
677 portdata = usb_get_serial_port_data(port);
678
679 for (j = 0; j < N_IN_URB; j++) {
680 if (portdata->in_urbs[j]) {
681 usb_free_urb(portdata->in_urbs[j]);
682 portdata->in_urbs[j] = NULL;
683 }
684 }
685 for (j = 0; j < N_OUT_URB; j++) {
686 if (portdata->out_urbs[j]) {
687 usb_free_urb(portdata->out_urbs[j]);
688 portdata->out_urbs[j] = NULL;
689 }
690 }
691 }
692
693 /* Now free per port private data */
694 for (i = 0; i < serial->num_ports; i++) {
695 port = serial->port[i];
696 kfree(usb_get_serial_port_data(port));
697 }
698 }
699
700 MODULE_AUTHOR(DRIVER_AUTHOR);
701 MODULE_DESCRIPTION(DRIVER_DESC);
702 MODULE_VERSION(DRIVER_VERSION);
703 MODULE_LICENSE("GPL");
704
705 #ifdef CONFIG_USB_DEBUG
706 module_param(debug, bool, S_IRUGO | S_IWUSR);
707 MODULE_PARM_DESC(debug, "Debug messages");
708 #endif
709
USB Experimental Work