Pull video into test branch
[linux-2.6] / drivers / usb / serial / sierra.c
1 /*
2   USB Driver for Sierra Wireless
3
4   Copyright (C) 2006  Kevin Lloyd <linux@sierrawireless.com>
5
6   IMPORTANT DISCLAIMER: This driver is not commercially supported by
7   Sierra Wireless. Use at your own risk.
8
9   This driver is free software; you can redistribute it and/or modify
10   it under the terms of Version 2 of the GNU General Public License as
11   published by the Free Software Foundation.
12
13   Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
14   Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
15
16   History:
17 */
18
19 #define DRIVER_VERSION "v.1.0.5"
20 #define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>"
21 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
22
23 #include <linux/kernel.h>
24 #include <linux/jiffies.h>
25 #include <linux/errno.h>
26 #include <linux/tty.h>
27 #include <linux/tty_flip.h>
28 #include <linux/module.h>
29 #include <linux/usb.h>
30 #include <linux/usb/serial.h>
31
32
33 static struct usb_device_id id_table [] = {
34         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
35         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
36         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
37         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
38         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
39         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
40         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
41         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 for Europe */
42         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 */
43         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
44
45         { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
46         { USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
47         { }
48 };
49 MODULE_DEVICE_TABLE(usb, id_table);
50
51 static struct usb_device_id id_table_1port [] = {
52         { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
53         { USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
54         { }
55 };
56
57 static struct usb_device_id id_table_3port [] = {
58         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
59         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
60         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
61         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
62         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
63         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
64         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
65         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 for Europe */
66         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 */
67         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
68         { }
69 };
70
71 static struct usb_driver sierra_driver = {
72         .name       = "sierra",
73         .probe      = usb_serial_probe,
74         .disconnect = usb_serial_disconnect,
75         .id_table   = id_table,
76         .no_dynamic_id =        1,
77 };
78
79
80 static int debug;
81
82 /* per port private data */
83 #define N_IN_URB        4
84 #define N_OUT_URB       1
85 #define IN_BUFLEN       4096
86 #define OUT_BUFLEN      128
87
88 struct sierra_port_private {
89         /* Input endpoints and buffer for this port */
90         struct urb *in_urbs[N_IN_URB];
91         char in_buffer[N_IN_URB][IN_BUFLEN];
92         /* Output endpoints and buffer for this port */
93         struct urb *out_urbs[N_OUT_URB];
94         char out_buffer[N_OUT_URB][OUT_BUFLEN];
95
96         /* Settings for the port */
97         int rts_state;  /* Handshaking pins (outputs) */
98         int dtr_state;
99         int cts_state;  /* Handshaking pins (inputs) */
100         int dsr_state;
101         int dcd_state;
102         int ri_state;
103
104         unsigned long tx_start_time[N_OUT_URB];
105 };
106
107 static int sierra_send_setup(struct usb_serial_port *port)
108 {
109         struct usb_serial *serial = port->serial;
110         struct sierra_port_private *portdata;
111
112         dbg("%s", __FUNCTION__);
113
114         portdata = usb_get_serial_port_data(port);
115
116         if (port->tty) {
117                 int val = 0;
118                 if (portdata->dtr_state)
119                         val |= 0x01;
120                 if (portdata->rts_state)
121                         val |= 0x02;
122
123                 return usb_control_msg(serial->dev,
124                                 usb_rcvctrlpipe(serial->dev, 0),
125                                 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
126         }
127
128         return 0;
129 }
130
131 static void sierra_rx_throttle(struct usb_serial_port *port)
132 {
133         dbg("%s", __FUNCTION__);
134 }
135
136 static void sierra_rx_unthrottle(struct usb_serial_port *port)
137 {
138         dbg("%s", __FUNCTION__);
139 }
140
141 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
142 {
143         /* Unfortunately, I don't know how to send a break */
144         dbg("%s", __FUNCTION__);
145 }
146
147 static void sierra_set_termios(struct usb_serial_port *port,
148                         struct ktermios *old_termios)
149 {
150         dbg("%s", __FUNCTION__);
151
152         sierra_send_setup(port);
153 }
154
155 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
156 {
157         unsigned int value;
158         struct sierra_port_private *portdata;
159
160         portdata = usb_get_serial_port_data(port);
161
162         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
163                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
164                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
165                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
166                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
167                 ((portdata->ri_state) ? TIOCM_RNG : 0);
168
169         return value;
170 }
171
172 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
173                         unsigned int set, unsigned int clear)
174 {
175         struct sierra_port_private *portdata;
176
177         portdata = usb_get_serial_port_data(port);
178
179         if (set & TIOCM_RTS)
180                 portdata->rts_state = 1;
181         if (set & TIOCM_DTR)
182                 portdata->dtr_state = 1;
183
184         if (clear & TIOCM_RTS)
185                 portdata->rts_state = 0;
186         if (clear & TIOCM_DTR)
187                 portdata->dtr_state = 0;
188         return sierra_send_setup(port);
189 }
190
191 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
192                         unsigned int cmd, unsigned long arg)
193 {
194         return -ENOIOCTLCMD;
195 }
196
197 /* Write */
198 static int sierra_write(struct usb_serial_port *port,
199                         const unsigned char *buf, int count)
200 {
201         struct sierra_port_private *portdata;
202         int i;
203         int left, todo;
204         struct urb *this_urb = NULL; /* spurious */
205         int err;
206
207         portdata = usb_get_serial_port_data(port);
208
209         dbg("%s: write (%d chars)", __FUNCTION__, count);
210
211         i = 0;
212         left = count;
213         for (i=0; left > 0 && i < N_OUT_URB; i++) {
214                 todo = left;
215                 if (todo > OUT_BUFLEN)
216                         todo = OUT_BUFLEN;
217
218                 this_urb = portdata->out_urbs[i];
219                 if (this_urb->status == -EINPROGRESS) {
220                         if (time_before(jiffies,
221                                         portdata->tx_start_time[i] + 10 * HZ))
222                                 continue;
223                         usb_unlink_urb(this_urb);
224                         continue;
225                 }
226                 if (this_urb->status != 0)
227                         dbg("usb_write %p failed (err=%d)",
228                                 this_urb, this_urb->status);
229
230                 dbg("%s: endpoint %d buf %d", __FUNCTION__,
231                         usb_pipeendpoint(this_urb->pipe), i);
232
233                 /* send the data */
234                 memcpy (this_urb->transfer_buffer, buf, todo);
235                 this_urb->transfer_buffer_length = todo;
236
237                 this_urb->dev = port->serial->dev;
238                 err = usb_submit_urb(this_urb, GFP_ATOMIC);
239                 if (err) {
240                         dbg("usb_submit_urb %p (write bulk) failed "
241                                 "(%d, has %d)", this_urb,
242                                 err, this_urb->status);
243                         continue;
244                 }
245                 portdata->tx_start_time[i] = jiffies;
246                 buf += todo;
247                 left -= todo;
248         }
249
250         count -= left;
251         dbg("%s: wrote (did %d)", __FUNCTION__, count);
252         return count;
253 }
254
255 static void sierra_indat_callback(struct urb *urb)
256 {
257         int err;
258         int endpoint;
259         struct usb_serial_port *port;
260         struct tty_struct *tty;
261         unsigned char *data = urb->transfer_buffer;
262
263         dbg("%s: %p", __FUNCTION__, urb);
264
265         endpoint = usb_pipeendpoint(urb->pipe);
266         port = (struct usb_serial_port *) urb->context;
267
268         if (urb->status) {
269                 dbg("%s: nonzero status: %d on endpoint %02x.",
270                     __FUNCTION__, urb->status, endpoint);
271         } else {
272                 tty = port->tty;
273                 if (urb->actual_length) {
274                         tty_buffer_request_room(tty, urb->actual_length);
275                         tty_insert_flip_string(tty, data, urb->actual_length);
276                         tty_flip_buffer_push(tty);
277                 } else {
278                         dbg("%s: empty read urb received", __FUNCTION__);
279                 }
280
281                 /* Resubmit urb so we continue receiving */
282                 if (port->open_count && urb->status != -ESHUTDOWN) {
283                         err = usb_submit_urb(urb, GFP_ATOMIC);
284                         if (err)
285                                 printk(KERN_ERR "%s: resubmit read urb failed. "
286                                         "(%d)", __FUNCTION__, err);
287                 }
288         }
289         return;
290 }
291
292 static void sierra_outdat_callback(struct urb *urb)
293 {
294         struct usb_serial_port *port;
295
296         dbg("%s", __FUNCTION__);
297
298         port = (struct usb_serial_port *) urb->context;
299
300         usb_serial_port_softint(port);
301 }
302
303 static void sierra_instat_callback(struct urb *urb)
304 {
305         int err;
306         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
307         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
308         struct usb_serial *serial = port->serial;
309
310         dbg("%s", __FUNCTION__);
311         dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
312
313         if (urb->status == 0) {
314                 struct usb_ctrlrequest *req_pkt =
315                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
316
317                 if (!req_pkt) {
318                         dbg("%s: NULL req_pkt\n", __FUNCTION__);
319                         return;
320                 }
321                 if ((req_pkt->bRequestType == 0xA1) &&
322                                 (req_pkt->bRequest == 0x20)) {
323                         int old_dcd_state;
324                         unsigned char signals = *((unsigned char *)
325                                         urb->transfer_buffer +
326                                         sizeof(struct usb_ctrlrequest));
327
328                         dbg("%s: signal x%x", __FUNCTION__, signals);
329
330                         old_dcd_state = portdata->dcd_state;
331                         portdata->cts_state = 1;
332                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
333                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
334                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
335
336                         if (port->tty && !C_CLOCAL(port->tty) &&
337                                         old_dcd_state && !portdata->dcd_state)
338                                 tty_hangup(port->tty);
339                 } else {
340                         dbg("%s: type %x req %x", __FUNCTION__,
341                                 req_pkt->bRequestType,req_pkt->bRequest);
342                 }
343         } else
344                 dbg("%s: error %d", __FUNCTION__, urb->status);
345
346         /* Resubmit urb so we continue receiving IRQ data */
347         if (urb->status != -ESHUTDOWN) {
348                 urb->dev = serial->dev;
349                 err = usb_submit_urb(urb, GFP_ATOMIC);
350                 if (err)
351                         dbg("%s: resubmit intr urb failed. (%d)",
352                                 __FUNCTION__, err);
353         }
354 }
355
356 static int sierra_write_room(struct usb_serial_port *port)
357 {
358         struct sierra_port_private *portdata;
359         int i;
360         int data_len = 0;
361         struct urb *this_urb;
362
363         portdata = usb_get_serial_port_data(port);
364
365         for (i=0; i < N_OUT_URB; i++) {
366                 this_urb = portdata->out_urbs[i];
367                 if (this_urb && this_urb->status != -EINPROGRESS)
368                         data_len += OUT_BUFLEN;
369         }
370
371         dbg("%s: %d", __FUNCTION__, data_len);
372         return data_len;
373 }
374
375 static int sierra_chars_in_buffer(struct usb_serial_port *port)
376 {
377         struct sierra_port_private *portdata;
378         int i;
379         int data_len = 0;
380         struct urb *this_urb;
381
382         portdata = usb_get_serial_port_data(port);
383
384         for (i=0; i < N_OUT_URB; i++) {
385                 this_urb = portdata->out_urbs[i];
386                 if (this_urb && this_urb->status == -EINPROGRESS)
387                         data_len += this_urb->transfer_buffer_length;
388         }
389         dbg("%s: %d", __FUNCTION__, data_len);
390         return data_len;
391 }
392
393 static int sierra_open(struct usb_serial_port *port, struct file *filp)
394 {
395         struct sierra_port_private *portdata;
396         struct usb_serial *serial = port->serial;
397         int i, err;
398         struct urb *urb;
399
400         portdata = usb_get_serial_port_data(port);
401
402         dbg("%s", __FUNCTION__);
403
404         /* Set some sane defaults */
405         portdata->rts_state = 1;
406         portdata->dtr_state = 1;
407
408         /* Reset low level data toggle and start reading from endpoints */
409         for (i = 0; i < N_IN_URB; i++) {
410                 urb = portdata->in_urbs[i];
411                 if (! urb)
412                         continue;
413                 if (urb->dev != serial->dev) {
414                         dbg("%s: dev %p != %p", __FUNCTION__,
415                                 urb->dev, serial->dev);
416                         continue;
417                 }
418
419                 /*
420                  * make sure endpoint data toggle is synchronized with the
421                  * device
422                  */
423                 usb_clear_halt(urb->dev, urb->pipe);
424
425                 err = usb_submit_urb(urb, GFP_KERNEL);
426                 if (err) {
427                         dbg("%s: submit urb %d failed (%d) %d",
428                                 __FUNCTION__, i, err,
429                                 urb->transfer_buffer_length);
430                 }
431         }
432
433         /* Reset low level data toggle on out endpoints */
434         for (i = 0; i < N_OUT_URB; i++) {
435                 urb = portdata->out_urbs[i];
436                 if (! urb)
437                         continue;
438                 urb->dev = serial->dev;
439                 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
440                                 usb_pipeout(urb->pipe), 0); */
441         }
442
443         port->tty->low_latency = 1;
444
445         sierra_send_setup(port);
446
447         return (0);
448 }
449
450 static inline void stop_urb(struct urb *urb)
451 {
452         if (urb && urb->status == -EINPROGRESS)
453                 usb_kill_urb(urb);
454 }
455
456 static void sierra_close(struct usb_serial_port *port, struct file *filp)
457 {
458         int i;
459         struct usb_serial *serial = port->serial;
460         struct sierra_port_private *portdata;
461
462         dbg("%s", __FUNCTION__);
463         portdata = usb_get_serial_port_data(port);
464
465         portdata->rts_state = 0;
466         portdata->dtr_state = 0;
467
468         if (serial->dev) {
469                 sierra_send_setup(port);
470
471                 /* Stop reading/writing urbs */
472                 for (i = 0; i < N_IN_URB; i++)
473                         stop_urb(portdata->in_urbs[i]);
474                 for (i = 0; i < N_OUT_URB; i++)
475                         stop_urb(portdata->out_urbs[i]);
476         }
477         port->tty = NULL;
478 }
479
480 /* Helper functions used by sierra_setup_urbs */
481 static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
482                                     int dir, void *ctx, char *buf, int len,
483                                     usb_complete_t callback)
484 {
485         struct urb *urb;
486
487         if (endpoint == -1)
488                 return NULL;            /* endpoint not needed */
489
490         urb = usb_alloc_urb(0, GFP_KERNEL);             /* No ISO */
491         if (urb == NULL) {
492                 dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint);
493                 return NULL;
494         }
495
496                 /* Fill URB using supplied data. */
497         usb_fill_bulk_urb(urb, serial->dev,
498                       usb_sndbulkpipe(serial->dev, endpoint) | dir,
499                       buf, len, callback, ctx);
500
501         return urb;
502 }
503
504 /* Setup urbs */
505 static void sierra_setup_urbs(struct usb_serial *serial)
506 {
507         int i,j;
508         struct usb_serial_port *port;
509         struct sierra_port_private *portdata;
510
511         dbg("%s", __FUNCTION__);
512
513         for (i = 0; i < serial->num_ports; i++) {
514                 port = serial->port[i];
515                 portdata = usb_get_serial_port_data(port);
516
517         /* Do indat endpoints first */
518                 for (j = 0; j < N_IN_URB; ++j) {
519                         portdata->in_urbs[j] = sierra_setup_urb (serial,
520                         port->bulk_in_endpointAddress, USB_DIR_IN, port,
521                         portdata->in_buffer[j], IN_BUFLEN, sierra_indat_callback);
522                 }
523
524                 /* outdat endpoints */
525                 for (j = 0; j < N_OUT_URB; ++j) {
526                         portdata->out_urbs[j] = sierra_setup_urb (serial,
527                         port->bulk_out_endpointAddress, USB_DIR_OUT, port,
528                         portdata->out_buffer[j], OUT_BUFLEN, sierra_outdat_callback);
529                 }
530         }
531 }
532
533 static int sierra_startup(struct usb_serial *serial)
534 {
535         int i, err;
536         struct usb_serial_port *port;
537         struct sierra_port_private *portdata;
538
539         dbg("%s", __FUNCTION__);
540
541         /* Now setup per port private data */
542         for (i = 0; i < serial->num_ports; i++) {
543                 port = serial->port[i];
544                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
545                 if (!portdata) {
546                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
547                                         __FUNCTION__, i);
548                         return (1);
549                 }
550
551                 usb_set_serial_port_data(port, portdata);
552
553                 if (! port->interrupt_in_urb)
554                         continue;
555                 err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
556                 if (err)
557                         dbg("%s: submit irq_in urb failed %d",
558                                 __FUNCTION__, err);
559         }
560
561         sierra_setup_urbs(serial);
562
563         return (0);
564 }
565
566 static void sierra_shutdown(struct usb_serial *serial)
567 {
568         int i, j;
569         struct usb_serial_port *port;
570         struct sierra_port_private *portdata;
571
572         dbg("%s", __FUNCTION__);
573
574         /* Stop reading/writing urbs */
575         for (i = 0; i < serial->num_ports; ++i) {
576                 port = serial->port[i];
577                 portdata = usb_get_serial_port_data(port);
578                 for (j = 0; j < N_IN_URB; j++)
579                         stop_urb(portdata->in_urbs[j]);
580                 for (j = 0; j < N_OUT_URB; j++)
581                         stop_urb(portdata->out_urbs[j]);
582         }
583
584         /* Now free them */
585         for (i = 0; i < serial->num_ports; ++i) {
586                 port = serial->port[i];
587                 portdata = usb_get_serial_port_data(port);
588
589                 for (j = 0; j < N_IN_URB; j++) {
590                         if (portdata->in_urbs[j]) {
591                                 usb_free_urb(portdata->in_urbs[j]);
592                                 portdata->in_urbs[j] = NULL;
593                         }
594                 }
595                 for (j = 0; j < N_OUT_URB; j++) {
596                         if (portdata->out_urbs[j]) {
597                                 usb_free_urb(portdata->out_urbs[j]);
598                                 portdata->out_urbs[j] = NULL;
599                         }
600                 }
601         }
602
603         /* Now free per port private data */
604         for (i = 0; i < serial->num_ports; i++) {
605                 port = serial->port[i];
606                 kfree(usb_get_serial_port_data(port));
607         }
608 }
609
610 static struct usb_serial_driver sierra_1port_device = {
611         .driver = {
612                 .owner =        THIS_MODULE,
613                 .name =         "sierra1",
614         },
615         .description       = "Sierra USB modem (1 port)",
616         .id_table          = id_table_1port,
617         .num_interrupt_in  = NUM_DONT_CARE,
618         .num_bulk_in       = 1,
619         .num_bulk_out      = 1,
620         .num_ports         = 1,
621         .open              = sierra_open,
622         .close             = sierra_close,
623         .write             = sierra_write,
624         .write_room        = sierra_write_room,
625         .chars_in_buffer   = sierra_chars_in_buffer,
626         .throttle          = sierra_rx_throttle,
627         .unthrottle        = sierra_rx_unthrottle,
628         .ioctl             = sierra_ioctl,
629         .set_termios       = sierra_set_termios,
630         .break_ctl         = sierra_break_ctl,
631         .tiocmget          = sierra_tiocmget,
632         .tiocmset          = sierra_tiocmset,
633         .attach            = sierra_startup,
634         .shutdown          = sierra_shutdown,
635         .read_int_callback = sierra_instat_callback,
636 };
637
638 static struct usb_serial_driver sierra_3port_device = {
639         .driver = {
640                 .owner =        THIS_MODULE,
641                 .name =         "sierra3",
642         },
643         .description       = "Sierra USB modem (3 port)",
644         .id_table          = id_table_3port,
645         .num_interrupt_in  = NUM_DONT_CARE,
646         .num_bulk_in       = 3,
647         .num_bulk_out      = 3,
648         .num_ports         = 3,
649         .open              = sierra_open,
650         .close             = sierra_close,
651         .write             = sierra_write,
652         .write_room        = sierra_write_room,
653         .chars_in_buffer   = sierra_chars_in_buffer,
654         .throttle          = sierra_rx_throttle,
655         .unthrottle        = sierra_rx_unthrottle,
656         .ioctl             = sierra_ioctl,
657         .set_termios       = sierra_set_termios,
658         .break_ctl         = sierra_break_ctl,
659         .tiocmget          = sierra_tiocmget,
660         .tiocmset          = sierra_tiocmset,
661         .attach            = sierra_startup,
662         .shutdown          = sierra_shutdown,
663         .read_int_callback = sierra_instat_callback,
664 };
665
666 /* Functions used by new usb-serial code. */
667 static int __init sierra_init(void)
668 {
669         int retval;
670         retval = usb_serial_register(&sierra_1port_device);
671         if (retval)
672                 goto failed_1port_device_register;
673         retval = usb_serial_register(&sierra_3port_device);
674         if (retval)
675                 goto failed_3port_device_register;
676
677
678         retval = usb_register(&sierra_driver);
679         if (retval)
680                 goto failed_driver_register;
681
682         info(DRIVER_DESC ": " DRIVER_VERSION);
683
684         return 0;
685
686 failed_driver_register:
687         usb_serial_deregister(&sierra_3port_device);
688 failed_3port_device_register:
689         usb_serial_deregister(&sierra_1port_device);
690 failed_1port_device_register:
691         return retval;
692 }
693
694 static void __exit sierra_exit(void)
695 {
696         usb_deregister (&sierra_driver);
697         usb_serial_deregister(&sierra_1port_device);
698         usb_serial_deregister(&sierra_3port_device);
699 }
700
701 module_init(sierra_init);
702 module_exit(sierra_exit);
703
704 MODULE_AUTHOR(DRIVER_AUTHOR);
705 MODULE_DESCRIPTION(DRIVER_DESC);
706 MODULE_VERSION(DRIVER_VERSION);
707 MODULE_LICENSE("GPL");
708
709 #ifdef CONFIG_USB_DEBUG
710 module_param(debug, bool, S_IRUGO | S_IWUSR);
711 MODULE_PARM_DESC(debug, "Debug messages");
712 #endif
713