Merge branch 'sh/for-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
[linux-2.6] / drivers / usb / serial / sierra.c
1 /*
2   USB Driver for Sierra Wireless
3
4   Copyright (C) 2006, 2007, 2008  Kevin Lloyd <klloyd@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
17 #define DRIVER_VERSION "v.1.2.13a"
18 #define DRIVER_AUTHOR "Kevin Lloyd <klloyd@sierrawireless.com>"
19 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
20
21 #include <linux/kernel.h>
22 #include <linux/jiffies.h>
23 #include <linux/errno.h>
24 #include <linux/tty.h>
25 #include <linux/tty_flip.h>
26 #include <linux/module.h>
27 #include <linux/usb.h>
28 #include <linux/usb/serial.h>
29 #include <linux/usb/ch9.h>
30
31 #define SWIMS_USB_REQUEST_SetPower      0x00
32 #define SWIMS_USB_REQUEST_SetNmea       0x07
33 #define SWIMS_USB_REQUEST_SetMode       0x0B
34 #define SWIMS_USB_REQUEST_GetSwocInfo   0x0A
35 #define SWIMS_SET_MODE_Modem            0x0001
36
37 /* per port private data */
38 #define N_IN_URB        4
39 #define N_OUT_URB       4
40 #define IN_BUFLEN       4096
41
42 static int debug;
43 static int nmea;
44
45 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
46 {
47         int result;
48         dev_dbg(&udev->dev, "%s", __func__);
49         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
50                         SWIMS_USB_REQUEST_SetPower,     /* __u8 request      */
51                         USB_TYPE_VENDOR,                /* __u8 request type */
52                         swiState,                       /* __u16 value       */
53                         0,                              /* __u16 index       */
54                         NULL,                           /* void *data        */
55                         0,                              /* __u16 size        */
56                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
57         return result;
58 }
59
60 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
61 {
62         int result;
63         dev_dbg(&udev->dev, "%s", __func__);
64         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
65                         SWIMS_USB_REQUEST_SetNmea,      /* __u8 request      */
66                         USB_TYPE_VENDOR,                /* __u8 request type */
67                         enable,                         /* __u16 value       */
68                         0x0000,                         /* __u16 index       */
69                         NULL,                           /* void *data        */
70                         0,                              /* __u16 size        */
71                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
72         return result;
73 }
74
75 static int sierra_calc_num_ports(struct usb_serial *serial)
76 {
77         int result;
78         int *num_ports = usb_get_serial_data(serial);
79         dev_dbg(&serial->dev->dev, "%s", __func__);
80
81         result = *num_ports;
82
83         if (result) {
84                 kfree(num_ports);
85                 usb_set_serial_data(serial, NULL);
86         }
87
88         return result;
89 }
90
91 static int sierra_calc_interface(struct usb_serial *serial)
92 {
93         int interface;
94         struct usb_interface *p_interface;
95         struct usb_host_interface *p_host_interface;
96         dev_dbg(&serial->dev->dev, "%s", __func__);
97
98         /* Get the interface structure pointer from the serial struct */
99         p_interface = serial->interface;
100
101         /* Get a pointer to the host interface structure */
102         p_host_interface = p_interface->cur_altsetting;
103
104         /* read the interface descriptor for this active altsetting
105          * to find out the interface number we are on
106         */
107         interface = p_host_interface->desc.bInterfaceNumber;
108
109         return interface;
110 }
111
112 static int sierra_probe(struct usb_serial *serial,
113                         const struct usb_device_id *id)
114 {
115         int result = 0;
116         struct usb_device *udev;
117         int *num_ports;
118         u8 ifnum;
119         u8 numendpoints;
120
121         dev_dbg(&serial->dev->dev, "%s", __func__);
122
123         num_ports = kmalloc(sizeof(*num_ports), GFP_KERNEL);
124         if (!num_ports)
125                 return -ENOMEM;
126
127         ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
128         numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
129         udev = serial->dev;
130
131         /* Figure out the interface number from the serial structure */
132         ifnum = sierra_calc_interface(serial);
133
134         /*
135          * If this interface supports more than 1 alternate
136          * select the 2nd one
137          */
138         if (serial->interface->num_altsetting == 2) {
139                 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
140                         ifnum);
141                 /* We know the alternate setting is 1 for the MC8785 */
142                 usb_set_interface(udev, ifnum, 1);
143         }
144
145         /* Dummy interface present on some SKUs should be ignored */
146         if (ifnum == 0x99)
147                 *num_ports = 0;
148         else if (numendpoints <= 3)
149                 *num_ports = 1;
150         else
151                 *num_ports = (numendpoints-1)/2;
152
153         /*
154          * save off our num_ports info so that we can use it in the
155          * calc_num_ports callback
156          */
157         usb_set_serial_data(serial, (void *)num_ports);
158
159         return result;
160 }
161
162 static struct usb_device_id id_table [] = {
163         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
164         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
165         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
166         { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
167         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
168         { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
169         { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
170         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
171         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
172         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
173          /* Sierra Wireless C597 */
174         { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
175          /* Sierra Wireless Device */
176         { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
177         { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless Device */
178
179         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
180         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
181         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
182         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
183         { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Lenovo) */
184         { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
185         { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */
186         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
187         { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
188         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
189         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
190         { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
191         { USB_DEVICE(0x1199, 0x683C) }, /* Sierra Wireless MC8790 */
192         { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8790 */
193         { USB_DEVICE(0x1199, 0x683E) }, /* Sierra Wireless MC8790 */
194         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
195         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
196         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
197         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
198         { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
199         { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
200         { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
201         { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
202         /* Sierra Wireless C885 */
203         { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
204         /* Sierra Wireless Device */
205         { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
206         /* Sierra Wireless Device */
207         { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
208
209         { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
210         { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
211
212         { }
213 };
214 MODULE_DEVICE_TABLE(usb, id_table);
215
216 static struct usb_driver sierra_driver = {
217         .name       = "sierra",
218         .probe      = usb_serial_probe,
219         .disconnect = usb_serial_disconnect,
220         .id_table   = id_table,
221         .no_dynamic_id =        1,
222 };
223
224 struct sierra_port_private {
225         spinlock_t lock;        /* lock the structure */
226         int outstanding_urbs;   /* number of out urbs in flight */
227
228         /* Input endpoints and buffers for this port */
229         struct urb *in_urbs[N_IN_URB];
230         char *in_buffer[N_IN_URB];
231
232         /* Settings for the port */
233         int rts_state;  /* Handshaking pins (outputs) */
234         int dtr_state;
235         int cts_state;  /* Handshaking pins (inputs) */
236         int dsr_state;
237         int dcd_state;
238         int ri_state;
239 };
240
241 static int sierra_send_setup(struct tty_struct *tty,
242                                                 struct usb_serial_port *port)
243 {
244         struct usb_serial *serial = port->serial;
245         struct sierra_port_private *portdata;
246         __u16 interface = 0;
247
248         dbg("%s", __func__);
249
250         portdata = usb_get_serial_port_data(port);
251
252         if (tty) {
253                 int val = 0;
254                 if (portdata->dtr_state)
255                         val |= 0x01;
256                 if (portdata->rts_state)
257                         val |= 0x02;
258
259                 /* If composite device then properly report interface */
260                 if (serial->num_ports == 1)
261                         interface = sierra_calc_interface(serial);
262
263                 /* Otherwise the need to do non-composite mapping */
264                 else {
265                         if (port->bulk_out_endpointAddress == 2)
266                                 interface = 0;
267                         else if (port->bulk_out_endpointAddress == 4)
268                                 interface = 1;
269                         else if (port->bulk_out_endpointAddress == 5)
270                                 interface = 2;
271                 }
272
273                 return usb_control_msg(serial->dev,
274                                 usb_rcvctrlpipe(serial->dev, 0),
275                                 0x22, 0x21, val, interface,
276                                 NULL, 0, USB_CTRL_SET_TIMEOUT);
277         }
278
279         return 0;
280 }
281
282 static void sierra_set_termios(struct tty_struct *tty,
283                 struct usb_serial_port *port, struct ktermios *old_termios)
284 {
285         dbg("%s", __func__);
286         tty_termios_copy_hw(tty->termios, old_termios);
287         sierra_send_setup(tty, port);
288 }
289
290 static int sierra_tiocmget(struct tty_struct *tty, struct file *file)
291 {
292         struct usb_serial_port *port = tty->driver_data;
293         unsigned int value;
294         struct sierra_port_private *portdata;
295
296         portdata = usb_get_serial_port_data(port);
297
298         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
299                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
300                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
301                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
302                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
303                 ((portdata->ri_state) ? TIOCM_RNG : 0);
304
305         return value;
306 }
307
308 static int sierra_tiocmset(struct tty_struct *tty, struct file *file,
309                         unsigned int set, unsigned int clear)
310 {
311         struct usb_serial_port *port = tty->driver_data;
312         struct sierra_port_private *portdata;
313
314         portdata = usb_get_serial_port_data(port);
315
316         if (set & TIOCM_RTS)
317                 portdata->rts_state = 1;
318         if (set & TIOCM_DTR)
319                 portdata->dtr_state = 1;
320
321         if (clear & TIOCM_RTS)
322                 portdata->rts_state = 0;
323         if (clear & TIOCM_DTR)
324                 portdata->dtr_state = 0;
325         return sierra_send_setup(tty, port);
326 }
327
328 static void sierra_outdat_callback(struct urb *urb)
329 {
330         struct usb_serial_port *port = urb->context;
331         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
332         int status = urb->status;
333         unsigned long flags;
334
335         dbg("%s - port %d", __func__, port->number);
336
337         /* free up the transfer buffer, as usb_free_urb() does not do this */
338         kfree(urb->transfer_buffer);
339
340         if (status)
341                 dbg("%s - nonzero write bulk status received: %d",
342                     __func__, status);
343
344         spin_lock_irqsave(&portdata->lock, flags);
345         --portdata->outstanding_urbs;
346         spin_unlock_irqrestore(&portdata->lock, flags);
347
348         usb_serial_port_softint(port);
349 }
350
351 /* Write */
352 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
353                                         const unsigned char *buf, int count)
354 {
355         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
356         struct usb_serial *serial = port->serial;
357         unsigned long flags;
358         unsigned char *buffer;
359         struct urb *urb;
360         int status;
361
362         portdata = usb_get_serial_port_data(port);
363
364         dbg("%s: write (%d chars)", __func__, count);
365
366         spin_lock_irqsave(&portdata->lock, flags);
367         if (portdata->outstanding_urbs > N_OUT_URB) {
368                 spin_unlock_irqrestore(&portdata->lock, flags);
369                 dbg("%s - write limit hit\n", __func__);
370                 return 0;
371         }
372         portdata->outstanding_urbs++;
373         spin_unlock_irqrestore(&portdata->lock, flags);
374
375         buffer = kmalloc(count, GFP_ATOMIC);
376         if (!buffer) {
377                 dev_err(&port->dev, "out of memory\n");
378                 count = -ENOMEM;
379                 goto error_no_buffer;
380         }
381
382         urb = usb_alloc_urb(0, GFP_ATOMIC);
383         if (!urb) {
384                 dev_err(&port->dev, "no more free urbs\n");
385                 count = -ENOMEM;
386                 goto error_no_urb;
387         }
388
389         memcpy(buffer, buf, count);
390
391         usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
392
393         usb_fill_bulk_urb(urb, serial->dev,
394                           usb_sndbulkpipe(serial->dev,
395                                           port->bulk_out_endpointAddress),
396                           buffer, count, sierra_outdat_callback, port);
397
398         /* send it down the pipe */
399         status = usb_submit_urb(urb, GFP_ATOMIC);
400         if (status) {
401                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
402                         "with status = %d\n", __func__, status);
403                 count = status;
404                 goto error;
405         }
406
407         /* we are done with this urb, so let the host driver
408          * really free it when it is finished with it */
409         usb_free_urb(urb);
410
411         return count;
412 error:
413         usb_free_urb(urb);
414 error_no_urb:
415         kfree(buffer);
416 error_no_buffer:
417         spin_lock_irqsave(&portdata->lock, flags);
418         --portdata->outstanding_urbs;
419         spin_unlock_irqrestore(&portdata->lock, flags);
420         return count;
421 }
422
423 static void sierra_indat_callback(struct urb *urb)
424 {
425         int err;
426         int endpoint;
427         struct usb_serial_port *port;
428         struct tty_struct *tty;
429         unsigned char *data = urb->transfer_buffer;
430         int status = urb->status;
431
432         dbg("%s: %p", __func__, urb);
433
434         endpoint = usb_pipeendpoint(urb->pipe);
435         port =  urb->context;
436
437         if (status) {
438                 dbg("%s: nonzero status: %d on endpoint %02x.",
439                     __func__, status, endpoint);
440         } else {
441                 tty = port->port.tty;
442                 if (urb->actual_length) {
443                         tty_buffer_request_room(tty, urb->actual_length);
444                         tty_insert_flip_string(tty, data, urb->actual_length);
445                         tty_flip_buffer_push(tty);
446                 } else {
447                         dbg("%s: empty read urb received", __func__);
448                 }
449
450                 /* Resubmit urb so we continue receiving */
451                 if (port->port.count && status != -ESHUTDOWN) {
452                         err = usb_submit_urb(urb, GFP_ATOMIC);
453                         if (err)
454                                 dev_err(&port->dev, "resubmit read urb failed."
455                                         "(%d)\n", err);
456                 }
457         }
458         return;
459 }
460
461 static void sierra_instat_callback(struct urb *urb)
462 {
463         int err;
464         int status = urb->status;
465         struct usb_serial_port *port =  urb->context;
466         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
467         struct usb_serial *serial = port->serial;
468
469         dbg("%s", __func__);
470         dbg("%s: urb %p port %p has data %p", __func__, urb, port, portdata);
471
472         if (status == 0) {
473                 struct usb_ctrlrequest *req_pkt =
474                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
475
476                 if (!req_pkt) {
477                         dbg("%s: NULL req_pkt\n", __func__);
478                         return;
479                 }
480                 if ((req_pkt->bRequestType == 0xA1) &&
481                                 (req_pkt->bRequest == 0x20)) {
482                         int old_dcd_state;
483                         unsigned char signals = *((unsigned char *)
484                                         urb->transfer_buffer +
485                                         sizeof(struct usb_ctrlrequest));
486
487                         dbg("%s: signal x%x", __func__, signals);
488
489                         old_dcd_state = portdata->dcd_state;
490                         portdata->cts_state = 1;
491                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
492                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
493                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
494
495                         if (port->port.tty && !C_CLOCAL(port->port.tty) &&
496                                         old_dcd_state && !portdata->dcd_state)
497                                 tty_hangup(port->port.tty);
498                 } else {
499                         dbg("%s: type %x req %x", __func__,
500                                 req_pkt->bRequestType, req_pkt->bRequest);
501                 }
502         } else
503                 dbg("%s: error %d", __func__, status);
504
505         /* Resubmit urb so we continue receiving IRQ data */
506         if (status != -ESHUTDOWN) {
507                 urb->dev = serial->dev;
508                 err = usb_submit_urb(urb, GFP_ATOMIC);
509                 if (err)
510                         dbg("%s: resubmit intr urb failed. (%d)",
511                                 __func__, err);
512         }
513 }
514
515 static int sierra_write_room(struct tty_struct *tty)
516 {
517         struct usb_serial_port *port = tty->driver_data;
518         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
519         unsigned long flags;
520
521         dbg("%s - port %d", __func__, port->number);
522
523         /* try to give a good number back based on if we have any free urbs at
524          * this point in time */
525         spin_lock_irqsave(&portdata->lock, flags);
526         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
527                 spin_unlock_irqrestore(&portdata->lock, flags);
528                 dbg("%s - write limit hit\n", __func__);
529                 return 0;
530         }
531         spin_unlock_irqrestore(&portdata->lock, flags);
532
533         return 2048;
534 }
535
536 static int sierra_open(struct tty_struct *tty,
537                         struct usb_serial_port *port, struct file *filp)
538 {
539         struct sierra_port_private *portdata;
540         struct usb_serial *serial = port->serial;
541         int i;
542         struct urb *urb;
543         int result;
544
545         portdata = usb_get_serial_port_data(port);
546
547         dbg("%s", __func__);
548
549         /* Set some sane defaults */
550         portdata->rts_state = 1;
551         portdata->dtr_state = 1;
552
553         /* Reset low level data toggle and start reading from endpoints */
554         for (i = 0; i < N_IN_URB; i++) {
555                 urb = portdata->in_urbs[i];
556                 if (!urb)
557                         continue;
558                 if (urb->dev != serial->dev) {
559                         dbg("%s: dev %p != %p", __func__,
560                                 urb->dev, serial->dev);
561                         continue;
562                 }
563
564                 /*
565                  * make sure endpoint data toggle is synchronized with the
566                  * device
567                  */
568                 usb_clear_halt(urb->dev, urb->pipe);
569
570                 result = usb_submit_urb(urb, GFP_KERNEL);
571                 if (result) {
572                         dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
573                                 i, result, urb->transfer_buffer_length);
574                 }
575         }
576
577         if (tty)
578                 tty->low_latency = 1;
579
580         sierra_send_setup(tty, port);
581
582         /* start up the interrupt endpoint if we have one */
583         if (port->interrupt_in_urb) {
584                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
585                 if (result)
586                         dev_err(&port->dev, "submit irq_in urb failed %d\n",
587                                 result);
588         }
589         return 0;
590 }
591
592 static void sierra_close(struct tty_struct *tty,
593                         struct usb_serial_port *port, struct file *filp)
594 {
595         int i;
596         struct usb_serial *serial = port->serial;
597         struct sierra_port_private *portdata;
598
599         dbg("%s", __func__);
600         portdata = usb_get_serial_port_data(port);
601
602         portdata->rts_state = 0;
603         portdata->dtr_state = 0;
604
605         if (serial->dev) {
606                 mutex_lock(&serial->disc_mutex);
607                 if (!serial->disconnected)
608                         sierra_send_setup(tty, port);
609                 mutex_unlock(&serial->disc_mutex);
610
611                 /* Stop reading/writing urbs */
612                 for (i = 0; i < N_IN_URB; i++)
613                         usb_kill_urb(portdata->in_urbs[i]);
614         }
615
616         usb_kill_urb(port->interrupt_in_urb);
617
618         port->port.tty = NULL;  /* FIXME */
619 }
620
621 static int sierra_startup(struct usb_serial *serial)
622 {
623         struct usb_serial_port *port;
624         struct sierra_port_private *portdata;
625         struct urb *urb;
626         int i;
627         int j;
628
629         dbg("%s", __func__);
630
631         /* Set Device mode to D0 */
632         sierra_set_power_state(serial->dev, 0x0000);
633
634         /* Check NMEA and set */
635         if (nmea)
636                 sierra_vsc_set_nmea(serial->dev, 1);
637
638         /* Now setup per port private data */
639         for (i = 0; i < serial->num_ports; i++) {
640                 port = serial->port[i];
641                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
642                 if (!portdata) {
643                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
644                                         __func__, i);
645                         return -ENOMEM;
646                 }
647                 spin_lock_init(&portdata->lock);
648                 for (j = 0; j < N_IN_URB; j++) {
649                         portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
650                         if (!portdata->in_buffer[j]) {
651                                 for (--j; j >= 0; j--)
652                                         kfree(portdata->in_buffer[j]);
653                                 kfree(portdata);
654                                 return -ENOMEM;
655                         }
656                 }
657
658                 usb_set_serial_port_data(port, portdata);
659
660                 /* initialize the in urbs */
661                 for (j = 0; j < N_IN_URB; ++j) {
662                         urb = usb_alloc_urb(0, GFP_KERNEL);
663                         if (urb == NULL) {
664                                 dbg("%s: alloc for in port failed.",
665                                     __func__);
666                                 continue;
667                         }
668                         /* Fill URB using supplied data. */
669                         usb_fill_bulk_urb(urb, serial->dev,
670                                           usb_rcvbulkpipe(serial->dev,
671                                                 port->bulk_in_endpointAddress),
672                                           portdata->in_buffer[j], IN_BUFLEN,
673                                           sierra_indat_callback, port);
674                         portdata->in_urbs[j] = urb;
675                 }
676         }
677
678         return 0;
679 }
680
681 static void sierra_shutdown(struct usb_serial *serial)
682 {
683         int i, j;
684         struct usb_serial_port *port;
685         struct sierra_port_private *portdata;
686
687         dbg("%s", __func__);
688
689         for (i = 0; i < serial->num_ports; ++i) {
690                 port = serial->port[i];
691                 if (!port)
692                         continue;
693                 portdata = usb_get_serial_port_data(port);
694                 if (!portdata)
695                         continue;
696
697                 for (j = 0; j < N_IN_URB; j++) {
698                         usb_kill_urb(portdata->in_urbs[j]);
699                         usb_free_urb(portdata->in_urbs[j]);
700                         kfree(portdata->in_buffer[j]);
701                 }
702                 kfree(portdata);
703                 usb_set_serial_port_data(port, NULL);
704         }
705 }
706
707 static struct usb_serial_driver sierra_device = {
708         .driver = {
709                 .owner =        THIS_MODULE,
710                 .name =         "sierra",
711         },
712         .description       = "Sierra USB modem",
713         .id_table          = id_table,
714         .usb_driver        = &sierra_driver,
715         .calc_num_ports    = sierra_calc_num_ports,
716         .probe             = sierra_probe,
717         .open              = sierra_open,
718         .close             = sierra_close,
719         .write             = sierra_write,
720         .write_room        = sierra_write_room,
721         .set_termios       = sierra_set_termios,
722         .tiocmget          = sierra_tiocmget,
723         .tiocmset          = sierra_tiocmset,
724         .attach            = sierra_startup,
725         .shutdown          = sierra_shutdown,
726         .read_int_callback = sierra_instat_callback,
727 };
728
729 /* Functions used by new usb-serial code. */
730 static int __init sierra_init(void)
731 {
732         int retval;
733         retval = usb_serial_register(&sierra_device);
734         if (retval)
735                 goto failed_device_register;
736
737
738         retval = usb_register(&sierra_driver);
739         if (retval)
740                 goto failed_driver_register;
741
742         info(DRIVER_DESC ": " DRIVER_VERSION);
743
744         return 0;
745
746 failed_driver_register:
747         usb_serial_deregister(&sierra_device);
748 failed_device_register:
749         return retval;
750 }
751
752 static void __exit sierra_exit(void)
753 {
754         usb_deregister(&sierra_driver);
755         usb_serial_deregister(&sierra_device);
756 }
757
758 module_init(sierra_init);
759 module_exit(sierra_exit);
760
761 MODULE_AUTHOR(DRIVER_AUTHOR);
762 MODULE_DESCRIPTION(DRIVER_DESC);
763 MODULE_VERSION(DRIVER_VERSION);
764 MODULE_LICENSE("GPL");
765
766 module_param(nmea, bool, S_IRUGO | S_IWUSR);
767 MODULE_PARM_DESC(nmea, "NMEA streaming");
768
769 module_param(debug, bool, S_IRUGO | S_IWUSR);
770 MODULE_PARM_DESC(debug, "Debug messages");