[PATCH] Option Card driver update, Maintainer entry
[linux-2.6.git] / drivers / usb / serial / option.c
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
29   Work sponsored by: Sigos GmbH, Germany <info@sigos.de>
30
31 */
32
33 #define DRIVER_VERSION "v0.4"
34 #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>"
35 #define DRIVER_DESC "Option Card (PC-Card to) USB to Serial Driver"
36
37 #include <linux/config.h>
38 #include <linux/kernel.h>
39 #include <linux/jiffies.h>
40 #include <linux/errno.h>
41 #include <linux/tty.h>
42 #include <linux/tty_flip.h>
43 #include <linux/module.h>
44 #include <linux/usb.h>
45 #include "usb-serial.h"
46
47 /* Function prototypes */
48 static int  option_open (struct usb_serial_port *port, struct file *filp);
49 static void option_close (struct usb_serial_port *port, struct file *filp);
50 static int  option_startup (struct usb_serial *serial);
51 static void option_shutdown (struct usb_serial *serial);
52 static void option_rx_throttle (struct usb_serial_port *port);
53 static void option_rx_unthrottle (struct usb_serial_port *port);
54 static int  option_write_room (struct usb_serial_port *port);
55
56 static void option_instat_callback(struct urb *urb, struct pt_regs *regs);
57
58 static int  option_write (struct usb_serial_port *port,
59                           const unsigned char *buf, int count);
60
61 static int  option_chars_in_buffer (struct usb_serial_port *port);
62 static int  option_ioctl (struct usb_serial_port *port, struct file *file,
63                           unsigned int cmd, unsigned long arg);
64 static void option_set_termios (struct usb_serial_port *port,
65                                 struct termios *old);
66 static void option_break_ctl (struct usb_serial_port *port, int break_state);
67 static int  option_tiocmget (struct usb_serial_port *port, struct file *file);
68 static int  option_tiocmset (struct usb_serial_port *port, struct file *file,
69                              unsigned int set, unsigned int clear);
70 static int  option_send_setup (struct usb_serial_port *port);
71
72 /* Vendor and product IDs */
73 #define OPTION_VENDOR_ID                        0x0AF0
74
75 #define OPTION_PRODUCT_OLD              0x5000
76 #define OPTION_PRODUCT_FUSION   0x6000
77 #define OPTION_PRODUCT_FUSION2  0x6300
78
79
80 static struct usb_device_id option_ids[] = {
81         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) },
82         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) },
83         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) },
84         { } /* Terminating entry */
85 };
86
87 MODULE_DEVICE_TABLE(usb, option_ids);
88
89 static struct usb_driver option_driver = {
90         .owner      = THIS_MODULE,
91         .name       = "option",
92         .probe      = usb_serial_probe,
93         .disconnect = usb_serial_disconnect,
94         .id_table   = option_ids,
95 };
96
97 /* The card has three separate interfaces, wich the serial driver
98  * recognizes separately, thus num_port=1.
99  */
100 static struct usb_serial_device_type option_3port_device = {
101         .owner             = THIS_MODULE,
102         .name              = "Option 3G data card",
103         .short_name        = "option",
104         .id_table          = option_ids,
105         .num_interrupt_in  = NUM_DONT_CARE,
106         .num_bulk_in       = NUM_DONT_CARE,
107         .num_bulk_out      = NUM_DONT_CARE,
108         .num_ports         = 1, /* 3, but the card reports its ports separately */
109         .open              = option_open,
110         .close             = option_close,
111         .write             = option_write,
112         .write_room        = option_write_room,
113         .chars_in_buffer   = option_chars_in_buffer,
114         .throttle          = option_rx_throttle,
115         .unthrottle        = option_rx_unthrottle,
116         .ioctl             = option_ioctl,
117         .set_termios       = option_set_termios,
118         .break_ctl         = option_break_ctl,
119         .tiocmget          = option_tiocmget,
120         .tiocmset          = option_tiocmset,
121         .attach            = option_startup,
122         .shutdown          = option_shutdown,
123         .read_int_callback = option_instat_callback,
124 };
125
126 #ifdef CONFIG_USB_DEBUG
127 static int debug;
128 #else
129 #define debug 0
130 #endif
131
132
133 /* per port private data */
134
135 #define N_IN_URB 4
136 #define N_OUT_URB 1
137 #define IN_BUFLEN 1024
138 #define OUT_BUFLEN 128
139
140 struct option_port_private {
141         /* Input endpoints and buffer for this port */
142         struct urb *in_urbs[N_IN_URB];
143         char in_buffer[N_IN_URB][IN_BUFLEN];
144         /* Output endpoints and buffer for this port */
145         struct urb *out_urbs[N_OUT_URB];
146         char out_buffer[N_OUT_URB][OUT_BUFLEN];
147
148         /* Settings for the port */
149         int rts_state;  /* Handshaking pins (outputs) */
150         int dtr_state;
151         int cts_state;  /* Handshaking pins (inputs) */
152         int dsr_state;
153         int dcd_state;
154         int ri_state;
155
156         unsigned long tx_start_time[N_OUT_URB];
157 };
158
159
160 /* Functions used by new usb-serial code. */
161 static int __init
162 option_init (void)
163 {
164         int retval;
165         retval = usb_serial_register(&option_3port_device);
166         if (retval)
167                 goto failed_3port_device_register;
168         retval = usb_register(&option_driver);
169         if (retval)
170                 goto failed_driver_register;
171
172         info(DRIVER_DESC ": " DRIVER_VERSION);
173
174         return 0;
175
176 failed_driver_register:
177         usb_serial_deregister (&option_3port_device);
178 failed_3port_device_register:
179         return retval;
180 }
181
182 static void __exit
183 option_exit (void)
184 {
185         usb_deregister (&option_driver);
186         usb_serial_deregister (&option_3port_device);
187 }
188
189 module_init(option_init);
190 module_exit(option_exit);
191
192 static void
193 option_rx_throttle (struct usb_serial_port *port)
194 {
195         dbg("%s", __FUNCTION__);
196 }
197
198
199 static void
200 option_rx_unthrottle (struct usb_serial_port *port)
201 {
202         dbg("%s", __FUNCTION__);
203 }
204
205
206 static void
207 option_break_ctl (struct usb_serial_port *port, int break_state)
208 {
209         /* Unfortunately, I don't know how to send a break */
210         dbg("%s", __FUNCTION__);
211 }
212
213
214 static void
215 option_set_termios (struct usb_serial_port *port,
216                     struct termios *old_termios)
217 {
218         dbg("%s", __FUNCTION__);
219
220         option_send_setup(port);
221 }
222
223 static int
224 option_tiocmget (struct usb_serial_port *port, struct file *file)
225 {
226         unsigned int value;
227         struct option_port_private *portdata;
228
229         portdata = usb_get_serial_port_data(port);
230
231         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
232                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
233                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
234                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
235                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
236                 ((portdata->ri_state) ? TIOCM_RNG : 0);
237
238         return value;
239 }
240
241 static int
242 option_tiocmset (struct usb_serial_port *port, struct file *file,
243                  unsigned int set, unsigned int clear)
244 {
245         struct option_port_private *portdata;
246
247         portdata = usb_get_serial_port_data(port);
248
249         if (set & TIOCM_RTS)
250                 portdata->rts_state = 1;
251         if (set & TIOCM_DTR)
252                 portdata->dtr_state = 1;
253
254         if (clear & TIOCM_RTS)
255                 portdata->rts_state = 0;
256         if (clear & TIOCM_DTR)
257                 portdata->dtr_state = 0;
258         return option_send_setup(port);
259 }
260
261 static int
262 option_ioctl (struct usb_serial_port *port, struct file *file,
263               unsigned int cmd, unsigned long arg)
264 {
265         return -ENOIOCTLCMD;
266 }
267
268 /* Write */
269 static int
270 option_write (struct usb_serial_port *port,
271                           const unsigned char *buf, int count)
272 {
273         struct option_port_private *portdata;
274         int i;
275         int left, todo;
276         struct urb *this_urb = NULL; /* spurious */
277         int err;
278
279         portdata = usb_get_serial_port_data(port);
280
281         dbg("%s: write (%d chars)", __FUNCTION__, count);
282
283         i = 0;
284         left = count;
285         for (i=0; left > 0 && i < N_OUT_URB; i++) {
286                 todo = left;
287                 if (todo > OUT_BUFLEN)
288                         todo = OUT_BUFLEN;
289
290                 this_urb = portdata->out_urbs[i];
291                 if (this_urb->status == -EINPROGRESS) {
292                         if (this_urb->transfer_flags & URB_ASYNC_UNLINK)
293                                 continue;
294                         if (time_before(jiffies, portdata->tx_start_time[i] + 10 * HZ))
295                                 continue;
296                         this_urb->transfer_flags |= URB_ASYNC_UNLINK;
297                         usb_unlink_urb(this_urb);
298                         continue;
299                 }
300                 if (this_urb->status != 0)
301                         dbg("usb_write %p failed (err=%d)", this_urb, this_urb->status);
302
303                 dbg("%s: endpoint %d buf %d", __FUNCTION__, usb_pipeendpoint(this_urb->pipe), i);
304
305                 /* send the data */
306                 memcpy (this_urb->transfer_buffer, buf, todo);
307                 this_urb->transfer_buffer_length = todo;
308
309                 this_urb->transfer_flags &= ~URB_ASYNC_UNLINK;
310                 this_urb->dev = port->serial->dev;
311                 err = usb_submit_urb(this_urb, GFP_ATOMIC);
312                 if (err) {
313                         dbg("usb_submit_urb %p (write bulk) failed (%d, has %d)", this_urb, err, this_urb->status);
314                         continue;
315                 }
316                 portdata->tx_start_time[i] = jiffies;
317                 buf += todo;
318                 left -= todo;
319         }
320
321         count -= left;
322         dbg("%s: wrote (did %d)", __FUNCTION__, count);
323         return count;
324 }
325
326 static void
327 option_indat_callback (struct urb *urb, struct pt_regs *regs)
328 {
329         int i, err;
330         int endpoint;
331         struct usb_serial_port *port;
332         struct tty_struct *tty;
333         unsigned char *data = urb->transfer_buffer;
334
335         dbg("%s: %p", __FUNCTION__, urb);
336
337         endpoint = usb_pipeendpoint(urb->pipe);
338         port = (struct usb_serial_port *) urb->context;
339
340         if (urb->status) {
341                 dbg("%s: nonzero status: %d on endpoint %02x.",
342                     __FUNCTION__, urb->status, endpoint);
343         } else {
344                 tty = port->tty;
345                 if (urb->actual_length) {
346                         for (i = 0; i < urb->actual_length ; ++i) {
347                                 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
348                                         tty_flip_buffer_push(tty);
349                                 tty_insert_flip_char(tty, data[i], 0);
350                         }
351                         tty_flip_buffer_push(tty);
352                 } else {
353                         dbg("%s: empty read urb received", __FUNCTION__);
354                 }
355
356                 /* Resubmit urb so we continue receiving */
357                 if (port->open_count && urb->status != -ESHUTDOWN) {
358                         err = usb_submit_urb(urb, GFP_ATOMIC);
359                         if (err)
360                                 printk(KERN_ERR "%s: resubmit read urb failed. (%d)", __FUNCTION__, err);
361                 }
362         }
363         return;
364 }
365
366 static void
367 option_outdat_callback (struct urb *urb, struct pt_regs *regs)
368 {
369         struct usb_serial_port *port;
370
371         dbg("%s", __FUNCTION__);
372
373         port = (struct usb_serial_port *) urb->context;
374
375         if (port->open_count)
376                 schedule_work(&port->work);
377 }
378
379 static void
380 option_instat_callback (struct urb *urb, struct pt_regs *regs)
381 {
382         int err;
383         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
384         struct option_port_private *portdata = usb_get_serial_port_data(port);
385         struct usb_serial *serial = port->serial;
386
387         dbg("%s", __FUNCTION__);
388         dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
389
390         if (urb->status == 0) {
391                 struct usb_ctrlrequest *req_pkt =
392                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
393
394                 if (!req_pkt) {
395                         dbg("%s: NULL req_pkt\n", __FUNCTION__);
396                         return;
397                 }
398                 if ((req_pkt->bRequestType == 0xA1) && (req_pkt->bRequest == 0x20)) {
399                         int old_dcd_state;
400                         unsigned char signals = *((unsigned char *)
401                                         urb->transfer_buffer + sizeof(struct usb_ctrlrequest));
402
403                         dbg("%s: signal x%x", __FUNCTION__, signals);
404
405                         old_dcd_state = portdata->dcd_state;
406                         portdata->cts_state = 1;
407                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
408                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
409                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
410
411                         if (port->tty && !C_CLOCAL(port->tty)
412                                         && old_dcd_state && !portdata->dcd_state) {
413                                 tty_hangup(port->tty);
414                         }
415                 } else
416                         dbg("%s: type %x req %x", __FUNCTION__, req_pkt->bRequestType,req_pkt->bRequest);
417         } else
418                 dbg("%s: error %d", __FUNCTION__, urb->status);
419
420         /* Resubmit urb so we continue receiving IRQ data */
421         if (urb->status != -ESHUTDOWN) {
422                 urb->dev = serial->dev;
423                 err = usb_submit_urb(urb, GFP_ATOMIC);
424                 if (err)
425                         dbg("%s: resubmit intr urb failed. (%d)", __FUNCTION__, err);
426         }
427 }
428
429
430 static int
431 option_write_room (struct usb_serial_port *port)
432 {
433         struct option_port_private *portdata;
434         int i;
435         int data_len = 0;
436         struct urb *this_urb;
437
438         portdata = usb_get_serial_port_data(port);
439
440         for (i=0; i < N_OUT_URB; i++) {
441                 this_urb = portdata->out_urbs[i];
442                 if (this_urb && this_urb->status != -EINPROGRESS)
443                         data_len += OUT_BUFLEN;
444         }
445
446         dbg("%s: %d", __FUNCTION__, data_len);
447         return data_len;
448 }
449
450
451 static int
452 option_chars_in_buffer (struct usb_serial_port *port)
453 {
454         struct option_port_private *portdata;
455         int i;
456         int data_len = 0;
457         struct urb *this_urb;
458
459         portdata = usb_get_serial_port_data(port);
460
461         for (i=0; i < N_OUT_URB; i++) {
462                 this_urb = portdata->out_urbs[i];
463                 if (this_urb && this_urb->status == -EINPROGRESS)
464                         data_len += this_urb->transfer_buffer_length;
465         }
466         dbg("%s: %d", __FUNCTION__, data_len);
467         return data_len;
468 }
469
470
471 static int
472 option_open (struct usb_serial_port *port, struct file *filp)
473 {
474         struct option_port_private *portdata;
475         struct usb_serial *serial = port->serial;
476         int i, err;
477         struct urb *urb;
478
479         portdata = usb_get_serial_port_data(port);
480
481         dbg("%s", __FUNCTION__);
482
483         /* Set some sane defaults */
484         portdata->rts_state = 1;
485         portdata->dtr_state = 1;
486
487         /* Reset low level data toggle and start reading from endpoints */
488         for (i = 0; i < N_IN_URB; i++) {
489                 urb = portdata->in_urbs[i];
490                 if (! urb)
491                         continue;
492                 if (urb->dev != serial->dev) {
493                         dbg("%s: dev %p != %p", __FUNCTION__, urb->dev, serial->dev);
494                         continue;
495                 }
496
497                 /* make sure endpoint data toggle is synchronized with the device */
498
499                 usb_clear_halt(urb->dev, urb->pipe);
500
501                 err = usb_submit_urb(urb, GFP_KERNEL);
502                 if (err) {
503                         dbg("%s: submit urb %d failed (%d) %d", __FUNCTION__, i, err,
504                                 urb->transfer_buffer_length);
505                 }
506         }
507
508         /* Reset low level data toggle on out endpoints */
509         for (i = 0; i < N_OUT_URB; i++) {
510                 urb = portdata->out_urbs[i];
511                 if (! urb)
512                         continue;
513                 urb->dev = serial->dev;
514                 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe), 0); */
515         }
516
517         port->tty->low_latency = 1;
518
519         option_send_setup(port);
520
521         return (0);
522 }
523
524 static inline void
525 stop_urb (struct urb *urb)
526 {
527         if (urb && urb->status == -EINPROGRESS) {
528                 urb->transfer_flags &= ~URB_ASYNC_UNLINK;
529                 usb_kill_urb(urb);
530         }
531 }
532
533 static void
534 option_close (struct usb_serial_port *port, struct file *filp)
535 {
536         int i;
537         struct usb_serial *serial = port->serial;
538         struct option_port_private *portdata;
539
540         dbg("%s", __FUNCTION__);
541         portdata = usb_get_serial_port_data(port);
542
543         portdata->rts_state = 0;
544         portdata->dtr_state = 0;
545
546         if (serial->dev) {
547                 option_send_setup(port);
548
549                 /* Stop reading/writing urbs */
550                 for (i = 0; i < N_IN_URB; i++)
551                         stop_urb(portdata->in_urbs[i]);
552                 for (i = 0; i < N_OUT_URB; i++)
553                         stop_urb(portdata->out_urbs[i]);
554         }
555         port->tty = NULL;
556 }
557
558
559 /* Helper functions used by option_setup_urbs */
560 static struct urb *
561 option_setup_urb (struct usb_serial *serial, int endpoint,
562                   int dir, void *ctx, char *buf, int len,
563                   void (*callback)(struct urb *, struct pt_regs *regs))
564 {
565         struct urb *urb;
566
567         if (endpoint == -1)
568                 return NULL;            /* endpoint not needed */
569
570         urb = usb_alloc_urb(0, GFP_KERNEL);             /* No ISO */
571         if (urb == NULL) {
572                 dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint);
573                 return NULL;
574         }
575
576                 /* Fill URB using supplied data. */
577         usb_fill_bulk_urb(urb, serial->dev,
578                       usb_sndbulkpipe(serial->dev, endpoint) | dir,
579                       buf, len, callback, ctx);
580
581         return urb;
582 }
583
584 /* Setup urbs */
585 static void
586 option_setup_urbs (struct usb_serial *serial)
587 {
588         int j;
589         struct usb_serial_port *port;
590         struct option_port_private *portdata;
591
592         dbg("%s", __FUNCTION__);
593
594         port = serial->port[0];
595         portdata = usb_get_serial_port_data(port);
596
597         /* Do indat endpoints first */
598         for (j = 0; j <= N_IN_URB; ++j) {
599                 portdata->in_urbs[j] = option_setup_urb (serial,
600                   port->bulk_in_endpointAddress, USB_DIR_IN, port,
601                   portdata->in_buffer[j], IN_BUFLEN, option_indat_callback);
602         }
603
604         /* outdat endpoints */
605         for (j = 0; j <= N_OUT_URB; ++j) {
606                 portdata->out_urbs[j] = option_setup_urb (serial,
607                   port->bulk_out_endpointAddress, USB_DIR_OUT, port,
608                   portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback);
609         }
610 }
611
612
613 static int
614 option_send_setup (struct usb_serial_port *port)
615 {
616         struct usb_serial *serial = port->serial;
617         struct option_port_private *portdata;
618
619         dbg("%s", __FUNCTION__);
620
621         portdata = usb_get_serial_port_data(port);
622
623         if (port->tty) {
624                 int val = 0;
625                 if (portdata->dtr_state)
626                         val |= 0x01;
627                 if (portdata->rts_state)
628                         val |= 0x02;
629
630                 return usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
631                                         0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
632         }
633
634         return 0;
635 }
636
637
638 static int
639 option_startup (struct usb_serial *serial)
640 {
641         int i, err;
642         struct usb_serial_port *port;
643         struct option_port_private *portdata;
644
645         dbg("%s", __FUNCTION__);
646
647         /* Now setup per port private data */
648         for (i = 0; i < serial->num_ports; i++) {
649                 port = serial->port[i];
650                 portdata = kmalloc(sizeof(struct option_port_private), GFP_KERNEL);
651                 if (!portdata) {
652                         dbg("%s: kmalloc for option_port_private (%d) failed!.", __FUNCTION__, i);
653                         return (1);
654                 }
655                 memset(portdata, 0, sizeof(struct option_port_private));
656
657                 usb_set_serial_port_data(port, portdata);
658
659                 if (! port->interrupt_in_urb)
660                         continue;
661                 err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
662                 if (err)
663                         dbg("%s: submit irq_in urb failed %d", __FUNCTION__, err);
664         }
665
666         option_setup_urbs(serial);
667
668         return (0);
669 }
670
671 static void
672 option_shutdown (struct usb_serial *serial)
673 {
674         int i, j;
675         struct usb_serial_port *port;
676         struct option_port_private *portdata;
677
678         dbg("%s", __FUNCTION__);
679
680         /* Stop reading/writing urbs */
681         for (i = 0; i < serial->num_ports; ++i) {
682                 port = serial->port[i];
683                 portdata = usb_get_serial_port_data(port);
684                 for (j = 0; j < N_IN_URB; j++)
685                         stop_urb(portdata->in_urbs[j]);
686                 for (j = 0; j < N_OUT_URB; j++)
687                         stop_urb(portdata->out_urbs[j]);
688         }
689
690         /* Now free them */
691         for (i = 0; i < serial->num_ports; ++i) {
692                 port = serial->port[i];
693                 portdata = usb_get_serial_port_data(port);
694
695                 for (j = 0; j < N_IN_URB; j++) {
696                         if (portdata->in_urbs[j]) {
697                                 usb_free_urb(portdata->in_urbs[j]);
698                                 portdata->in_urbs[j] = NULL;
699                         }
700                 }
701                 for (j = 0; j < N_OUT_URB; j++) {
702                         if (portdata->out_urbs[j]) {
703                                 usb_free_urb(portdata->out_urbs[j]);
704                                 portdata->out_urbs[j] = NULL;
705                         }
706                 }
707         }
708
709         /* Now free per port private data */
710         for (i = 0; i < serial->num_ports; i++) {
711                 port = serial->port[i];
712                 kfree(usb_get_serial_port_data(port));
713         }
714 }
715
716 MODULE_AUTHOR(DRIVER_AUTHOR);
717 MODULE_DESCRIPTION(DRIVER_DESC);
718 MODULE_VERSION(DRIVER_VERSION);
719 MODULE_LICENSE("GPL");
720
721 #ifdef CONFIG_USB_DEBUG
722 module_param(debug, bool, S_IRUGO | S_IWUSR);
723 MODULE_PARM_DESC(debug, "Debug messages");
724 #endif
725