Merge branch 'for-jeff' of git://git.kernel.org/pub/scm/linux/kernel/git/chris/linux...
[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.1.2.9c"
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_SET_MODE_Modem            0x0001
35
36 /* per port private data */
37 #define N_IN_URB        4
38 #define N_OUT_URB       4
39 #define IN_BUFLEN       4096
40
41 static int debug;
42 static int nmea;
43 static int truinstall = 1;
44
45 enum devicetype {
46         DEVICE_3_PORT =         0,
47         DEVICE_1_PORT =         1,
48         DEVICE_INSTALLER =      2,
49 };
50
51 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
52 {
53         int result;
54         dev_dbg(&udev->dev, "%s", "SET POWER STATE\n");
55         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
56                         SWIMS_USB_REQUEST_SetPower,     /* __u8 request      */
57                         USB_TYPE_VENDOR,                /* __u8 request type */
58                         swiState,                       /* __u16 value       */
59                         0,                              /* __u16 index       */
60                         NULL,                           /* void *data        */
61                         0,                              /* __u16 size        */
62                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
63         return result;
64 }
65
66 static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSWocMode)
67 {
68         int result;
69         dev_dbg(&udev->dev, "%s", "DEVICE MODE SWITCH\n");
70         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
71                         SWIMS_USB_REQUEST_SetMode,      /* __u8 request      */
72                         USB_TYPE_VENDOR,                /* __u8 request type */
73                         eSWocMode,                      /* __u16 value       */
74                         0x0000,                         /* __u16 index       */
75                         NULL,                           /* void *data        */
76                         0,                              /* __u16 size        */
77                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
78         return result;
79 }
80
81 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
82 {
83         int result;
84         dev_dbg(&udev->dev, "%s", "NMEA Enable sent\n");
85         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
86                         SWIMS_USB_REQUEST_SetNmea,      /* __u8 request      */
87                         USB_TYPE_VENDOR,                /* __u8 request type */
88                         enable,                         /* __u16 value       */
89                         0x0000,                         /* __u16 index       */
90                         NULL,                           /* void *data        */
91                         0,                              /* __u16 size        */
92                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
93         return result;
94 }
95
96 static int sierra_calc_num_ports(struct usb_serial *serial)
97 {
98         int result;
99         int *num_ports = usb_get_serial_data(serial);
100
101         result = *num_ports;
102
103         if (result) {
104                 kfree(num_ports);
105                 usb_set_serial_data(serial, NULL);
106         }
107
108         return result;
109 }
110
111 static int sierra_calc_interface(struct usb_serial *serial)
112 {
113                 int interface;
114                 struct usb_interface *p_interface;
115                 struct usb_host_interface *p_host_interface;
116
117                 /* Get the interface structure pointer from the serial struct */
118                 p_interface = serial->interface;
119
120                 /* Get a pointer to the host interface structure */
121                 p_host_interface = p_interface->cur_altsetting;
122
123                 /* read the interface descriptor for this active altsetting
124                  * to find out the interface number we are on
125                 */
126                 interface = p_host_interface->desc.bInterfaceNumber;
127
128                 return interface;
129 }
130
131 static int sierra_probe(struct usb_serial *serial,
132                         const struct usb_device_id *id)
133 {
134         int result = 0;
135         struct usb_device *udev;
136         int *num_ports;
137         u8 ifnum;
138
139         num_ports = kmalloc(sizeof(*num_ports), GFP_KERNEL);
140         if (!num_ports)
141                 return -ENOMEM;
142
143         ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
144         udev = serial->dev;
145
146                 /* Figure out the interface number from the serial structure */
147                 ifnum = sierra_calc_interface(serial);
148
149                 /*
150                  * If this interface supports more than 1 alternate
151                  * select the 2nd one
152                  */
153                 if (serial->interface->num_altsetting == 2) {
154                         dev_dbg(&udev->dev,
155                                 "Selecting alt setting for interface %d\n",
156                                 ifnum);
157
158                         /* We know the alternate setting is 1 for the MC8785 */
159                         usb_set_interface(udev, ifnum, 1);
160                 }
161
162         /* Check if in installer mode */
163         if (truinstall && id->driver_info == DEVICE_INSTALLER) {
164                 dev_dbg(&udev->dev, "%s", "FOUND TRU-INSTALL DEVICE(SW)\n");
165                 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
166                 /* Don't bind to the device when in installer mode */
167                 kfree(num_ports);
168                 return -EIO;
169         } else if (id->driver_info == DEVICE_1_PORT)
170                 *num_ports = 1;
171         else if (ifnum == 0x99)
172                 *num_ports = 0;
173         else
174                 *num_ports = 3;
175         /*
176          * save off our num_ports info so that we can use it in the
177          * calc_num_ports callback
178          */
179         usb_set_serial_data(serial, (void *)num_ports);
180
181         return result;
182 }
183
184 static struct usb_device_id id_table [] = {
185         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
186         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
187         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
188         { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
189         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
190         { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
191         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
192         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
193         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
194         { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) }, /* Sierra Wireless C597 */
195
196         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
197         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
198         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
199         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
200         { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Thinkpad internal) */
201         { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
202         { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */
203         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
204         { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
205         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
206         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
207         { USB_DEVICE(0x1199, 0x683B), .driver_info = DEVICE_1_PORT },   /* Sierra Wireless MC8785 Composite*/
208         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
209         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
210         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
211         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
212         { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
213         { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
214         { USB_DEVICE(0x1199, 0x6859), .driver_info = DEVICE_1_PORT },   /* Sierra Wireless AirCard 885 E */
215         { USB_DEVICE(0x1199, 0x685A), .driver_info = DEVICE_1_PORT },   /* Sierra Wireless AirCard 885 E */
216
217         { USB_DEVICE(0x1199, 0x6468) }, /* Sierra Wireless MP3G - EVDO */
218         { USB_DEVICE(0x1199, 0x6469) }, /* Sierra Wireless MP3G - UMTS/HSPA */
219
220         { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
221         { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
222
223         { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
224         { }
225 };
226 MODULE_DEVICE_TABLE(usb, id_table);
227
228 static struct usb_driver sierra_driver = {
229         .name       = "sierra",
230         .probe      = usb_serial_probe,
231         .disconnect = usb_serial_disconnect,
232         .id_table   = id_table,
233         .no_dynamic_id =        1,
234 };
235
236 struct sierra_port_private {
237         spinlock_t lock;        /* lock the structure */
238         int outstanding_urbs;   /* number of out urbs in flight */
239
240         /* Input endpoints and buffers for this port */
241         struct urb *in_urbs[N_IN_URB];
242         char *in_buffer[N_IN_URB];
243
244         /* Settings for the port */
245         int rts_state;  /* Handshaking pins (outputs) */
246         int dtr_state;
247         int cts_state;  /* Handshaking pins (inputs) */
248         int dsr_state;
249         int dcd_state;
250         int ri_state;
251 };
252
253 static int sierra_send_setup(struct tty_struct *tty,
254                                                 struct usb_serial_port *port)
255 {
256         struct usb_serial *serial = port->serial;
257         struct sierra_port_private *portdata;
258         __u16 interface = 0;
259
260         dbg("%s", __func__);
261
262         portdata = usb_get_serial_port_data(port);
263
264         if (tty) {
265                 int val = 0;
266                 if (portdata->dtr_state)
267                         val |= 0x01;
268                 if (portdata->rts_state)
269                         val |= 0x02;
270
271                 /* Determine which port is targeted */
272                 if (port->bulk_out_endpointAddress == 2)
273                         interface = 0;
274                 else if (port->bulk_out_endpointAddress == 4)
275                         interface = 1;
276                 else if (port->bulk_out_endpointAddress == 5)
277                         interface = 2;
278
279                 return usb_control_msg(serial->dev,
280                                 usb_rcvctrlpipe(serial->dev, 0),
281                                 0x22, 0x21, val, interface,
282                                 NULL, 0, USB_CTRL_SET_TIMEOUT);
283         }
284
285         return 0;
286 }
287
288 static void sierra_set_termios(struct tty_struct *tty,
289                 struct usb_serial_port *port, struct ktermios *old_termios)
290 {
291         dbg("%s", __func__);
292         tty_termios_copy_hw(tty->termios, old_termios);
293         sierra_send_setup(tty, port);
294 }
295
296 static int sierra_tiocmget(struct tty_struct *tty, struct file *file)
297 {
298         struct usb_serial_port *port = tty->driver_data;
299         unsigned int value;
300         struct sierra_port_private *portdata;
301
302         portdata = usb_get_serial_port_data(port);
303
304         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
305                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
306                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
307                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
308                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
309                 ((portdata->ri_state) ? TIOCM_RNG : 0);
310
311         return value;
312 }
313
314 static int sierra_tiocmset(struct tty_struct *tty, struct file *file,
315                         unsigned int set, unsigned int clear)
316 {
317         struct usb_serial_port *port = tty->driver_data;
318         struct sierra_port_private *portdata;
319
320         portdata = usb_get_serial_port_data(port);
321
322         if (set & TIOCM_RTS)
323                 portdata->rts_state = 1;
324         if (set & TIOCM_DTR)
325                 portdata->dtr_state = 1;
326
327         if (clear & TIOCM_RTS)
328                 portdata->rts_state = 0;
329         if (clear & TIOCM_DTR)
330                 portdata->dtr_state = 0;
331         return sierra_send_setup(tty, port);
332 }
333
334 static void sierra_outdat_callback(struct urb *urb)
335 {
336         struct usb_serial_port *port = urb->context;
337         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
338         int status = urb->status;
339         unsigned long flags;
340
341         dbg("%s - port %d", __func__, port->number);
342
343         /* free up the transfer buffer, as usb_free_urb() does not do this */
344         kfree(urb->transfer_buffer);
345
346         if (status)
347                 dbg("%s - nonzero write bulk status received: %d",
348                     __func__, status);
349
350         spin_lock_irqsave(&portdata->lock, flags);
351         --portdata->outstanding_urbs;
352         spin_unlock_irqrestore(&portdata->lock, flags);
353
354         usb_serial_port_softint(port);
355 }
356
357 /* Write */
358 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
359                                         const unsigned char *buf, int count)
360 {
361         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
362         struct usb_serial *serial = port->serial;
363         unsigned long flags;
364         unsigned char *buffer;
365         struct urb *urb;
366         int status;
367
368         portdata = usb_get_serial_port_data(port);
369
370         dbg("%s: write (%d chars)", __func__, count);
371
372         spin_lock_irqsave(&portdata->lock, flags);
373         if (portdata->outstanding_urbs > N_OUT_URB) {
374                 spin_unlock_irqrestore(&portdata->lock, flags);
375                 dbg("%s - write limit hit\n", __func__);
376                 return 0;
377         }
378         portdata->outstanding_urbs++;
379         spin_unlock_irqrestore(&portdata->lock, flags);
380
381         buffer = kmalloc(count, GFP_ATOMIC);
382         if (!buffer) {
383                 dev_err(&port->dev, "out of memory\n");
384                 count = -ENOMEM;
385                 goto error_no_buffer;
386         }
387
388         urb = usb_alloc_urb(0, GFP_ATOMIC);
389         if (!urb) {
390                 dev_err(&port->dev, "no more free urbs\n");
391                 count = -ENOMEM;
392                 goto error_no_urb;
393         }
394
395         memcpy(buffer, buf, count);
396
397         usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
398
399         usb_fill_bulk_urb(urb, serial->dev,
400                           usb_sndbulkpipe(serial->dev,
401                                           port->bulk_out_endpointAddress),
402                           buffer, count, sierra_outdat_callback, port);
403
404         /* send it down the pipe */
405         status = usb_submit_urb(urb, GFP_ATOMIC);
406         if (status) {
407                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
408                         "with status = %d\n", __func__, status);
409                 count = status;
410                 goto error;
411         }
412
413         /* we are done with this urb, so let the host driver
414          * really free it when it is finished with it */
415         usb_free_urb(urb);
416
417         return count;
418 error:
419         usb_free_urb(urb);
420 error_no_urb:
421         kfree(buffer);
422 error_no_buffer:
423         spin_lock_irqsave(&portdata->lock, flags);
424         --portdata->outstanding_urbs;
425         spin_unlock_irqrestore(&portdata->lock, flags);
426         return count;
427 }
428
429 static void sierra_indat_callback(struct urb *urb)
430 {
431         int err;
432         int endpoint;
433         struct usb_serial_port *port;
434         struct tty_struct *tty;
435         unsigned char *data = urb->transfer_buffer;
436         int status = urb->status;
437
438         dbg("%s: %p", __func__, urb);
439
440         endpoint = usb_pipeendpoint(urb->pipe);
441         port =  urb->context;
442
443         if (status) {
444                 dbg("%s: nonzero status: %d on endpoint %02x.",
445                     __func__, status, endpoint);
446         } else {
447                 tty = port->port.tty;
448                 if (urb->actual_length) {
449                         tty_buffer_request_room(tty, urb->actual_length);
450                         tty_insert_flip_string(tty, data, urb->actual_length);
451                         tty_flip_buffer_push(tty);
452                 } else {
453                         dbg("%s: empty read urb received", __func__);
454                 }
455
456                 /* Resubmit urb so we continue receiving */
457                 if (port->port.count && status != -ESHUTDOWN) {
458                         err = usb_submit_urb(urb, GFP_ATOMIC);
459                         if (err)
460                                 dev_err(&port->dev, "resubmit read urb failed."
461                                         "(%d)\n", err);
462                 }
463         }
464         return;
465 }
466
467 static void sierra_instat_callback(struct urb *urb)
468 {
469         int err;
470         int status = urb->status;
471         struct usb_serial_port *port =  urb->context;
472         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
473         struct usb_serial *serial = port->serial;
474
475         dbg("%s", __func__);
476         dbg("%s: urb %p port %p has data %p", __func__, urb, port, portdata);
477
478         if (status == 0) {
479                 struct usb_ctrlrequest *req_pkt =
480                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
481
482                 if (!req_pkt) {
483                         dbg("%s: NULL req_pkt\n", __func__);
484                         return;
485                 }
486                 if ((req_pkt->bRequestType == 0xA1) &&
487                                 (req_pkt->bRequest == 0x20)) {
488                         int old_dcd_state;
489                         unsigned char signals = *((unsigned char *)
490                                         urb->transfer_buffer +
491                                         sizeof(struct usb_ctrlrequest));
492
493                         dbg("%s: signal x%x", __func__, signals);
494
495                         old_dcd_state = portdata->dcd_state;
496                         portdata->cts_state = 1;
497                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
498                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
499                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
500
501                         if (port->port.tty && !C_CLOCAL(port->port.tty) &&
502                                         old_dcd_state && !portdata->dcd_state)
503                                 tty_hangup(port->port.tty);
504                 } else {
505                         dbg("%s: type %x req %x", __func__,
506                                 req_pkt->bRequestType, req_pkt->bRequest);
507                 }
508         } else
509                 dbg("%s: error %d", __func__, status);
510
511         /* Resubmit urb so we continue receiving IRQ data */
512         if (status != -ESHUTDOWN) {
513                 urb->dev = serial->dev;
514                 err = usb_submit_urb(urb, GFP_ATOMIC);
515                 if (err)
516                         dbg("%s: resubmit intr urb failed. (%d)",
517                                 __func__, err);
518         }
519 }
520
521 static int sierra_write_room(struct tty_struct *tty)
522 {
523         struct usb_serial_port *port = tty->driver_data;
524         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
525         unsigned long flags;
526
527         dbg("%s - port %d", __func__, port->number);
528
529         /* try to give a good number back based on if we have any free urbs at
530          * this point in time */
531         spin_lock_irqsave(&portdata->lock, flags);
532         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
533                 spin_unlock_irqrestore(&portdata->lock, flags);
534                 dbg("%s - write limit hit\n", __func__);
535                 return 0;
536         }
537         spin_unlock_irqrestore(&portdata->lock, flags);
538
539         return 2048;
540 }
541
542 static int sierra_open(struct tty_struct *tty,
543                         struct usb_serial_port *port, struct file *filp)
544 {
545         struct sierra_port_private *portdata;
546         struct usb_serial *serial = port->serial;
547         int i;
548         struct urb *urb;
549         int result;
550
551         portdata = usb_get_serial_port_data(port);
552
553         dbg("%s", __func__);
554
555         /* Set some sane defaults */
556         portdata->rts_state = 1;
557         portdata->dtr_state = 1;
558
559         /* Reset low level data toggle and start reading from endpoints */
560         for (i = 0; i < N_IN_URB; i++) {
561                 urb = portdata->in_urbs[i];
562                 if (!urb)
563                         continue;
564                 if (urb->dev != serial->dev) {
565                         dbg("%s: dev %p != %p", __func__,
566                                 urb->dev, serial->dev);
567                         continue;
568                 }
569
570                 /*
571                  * make sure endpoint data toggle is synchronized with the
572                  * device
573                  */
574                 usb_clear_halt(urb->dev, urb->pipe);
575
576                 result = usb_submit_urb(urb, GFP_KERNEL);
577                 if (result) {
578                         dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
579                                 i, result, urb->transfer_buffer_length);
580                 }
581         }
582
583         if (tty)
584                 tty->low_latency = 1;
585
586         sierra_send_setup(tty, port);
587
588         /* start up the interrupt endpoint if we have one */
589         if (port->interrupt_in_urb) {
590                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
591                 if (result)
592                         dev_err(&port->dev, "submit irq_in urb failed %d\n",
593                                 result);
594         }
595         return 0;
596 }
597
598 static void sierra_close(struct tty_struct *tty,
599                         struct usb_serial_port *port, struct file *filp)
600 {
601         int i;
602         struct usb_serial *serial = port->serial;
603         struct sierra_port_private *portdata;
604
605         dbg("%s", __func__);
606         portdata = usb_get_serial_port_data(port);
607
608         portdata->rts_state = 0;
609         portdata->dtr_state = 0;
610
611         if (serial->dev) {
612                 mutex_lock(&serial->disc_mutex);
613                 if (!serial->disconnected)
614                         sierra_send_setup(tty, port);
615                 mutex_unlock(&serial->disc_mutex);
616
617                 /* Stop reading/writing urbs */
618                 for (i = 0; i < N_IN_URB; i++)
619                         usb_kill_urb(portdata->in_urbs[i]);
620         }
621
622         usb_kill_urb(port->interrupt_in_urb);
623
624         port->port.tty = NULL;  /* FIXME */
625 }
626
627 static int sierra_startup(struct usb_serial *serial)
628 {
629         struct usb_serial_port *port;
630         struct sierra_port_private *portdata;
631         struct urb *urb;
632         int i;
633         int j;
634
635         dbg("%s", __func__);
636
637         /* Set Device mode to D0 */
638         sierra_set_power_state(serial->dev, 0x0000);
639
640         /* Check NMEA and set */
641         if (nmea)
642                 sierra_vsc_set_nmea(serial->dev, 1);
643
644         /* Now setup per port private data */
645         for (i = 0; i < serial->num_ports; i++) {
646                 port = serial->port[i];
647                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
648                 if (!portdata) {
649                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
650                                         __func__, i);
651                         return -ENOMEM;
652                 }
653                 spin_lock_init(&portdata->lock);
654                 for (j = 0; j < N_IN_URB; j++) {
655                         portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
656                         if (!portdata->in_buffer[j]) {
657                                 for (--j; j >= 0; j--)
658                                         kfree(portdata->in_buffer[j]);
659                                 kfree(portdata);
660                                 return -ENOMEM;
661                         }
662                 }
663
664                 usb_set_serial_port_data(port, portdata);
665
666                 /* initialize the in urbs */
667                 for (j = 0; j < N_IN_URB; ++j) {
668                         urb = usb_alloc_urb(0, GFP_KERNEL);
669                         if (urb == NULL) {
670                                 dbg("%s: alloc for in port failed.",
671                                     __func__);
672                                 continue;
673                         }
674                         /* Fill URB using supplied data. */
675                         usb_fill_bulk_urb(urb, serial->dev,
676                                           usb_rcvbulkpipe(serial->dev,
677                                                 port->bulk_in_endpointAddress),
678                                           portdata->in_buffer[j], IN_BUFLEN,
679                                           sierra_indat_callback, port);
680                         portdata->in_urbs[j] = urb;
681                 }
682         }
683
684         return 0;
685 }
686
687 static void sierra_shutdown(struct usb_serial *serial)
688 {
689         int i, j;
690         struct usb_serial_port *port;
691         struct sierra_port_private *portdata;
692
693         dbg("%s", __func__);
694
695         for (i = 0; i < serial->num_ports; ++i) {
696                 port = serial->port[i];
697                 if (!port)
698                         continue;
699                 portdata = usb_get_serial_port_data(port);
700                 if (!portdata)
701                         continue;
702
703                 for (j = 0; j < N_IN_URB; j++) {
704                         usb_kill_urb(portdata->in_urbs[j]);
705                         usb_free_urb(portdata->in_urbs[j]);
706                         kfree(portdata->in_buffer[j]);
707                 }
708                 kfree(portdata);
709                 usb_set_serial_port_data(port, NULL);
710         }
711 }
712
713 static struct usb_serial_driver sierra_device = {
714         .driver = {
715                 .owner =        THIS_MODULE,
716                 .name =         "sierra1",
717         },
718         .description       = "Sierra USB modem",
719         .id_table          = id_table,
720         .usb_driver        = &sierra_driver,
721         .calc_num_ports    = sierra_calc_num_ports,
722         .probe             = sierra_probe,
723         .open              = sierra_open,
724         .close             = sierra_close,
725         .write             = sierra_write,
726         .write_room        = sierra_write_room,
727         .set_termios       = sierra_set_termios,
728         .tiocmget          = sierra_tiocmget,
729         .tiocmset          = sierra_tiocmset,
730         .attach            = sierra_startup,
731         .shutdown          = sierra_shutdown,
732         .read_int_callback = sierra_instat_callback,
733 };
734
735 /* Functions used by new usb-serial code. */
736 static int __init sierra_init(void)
737 {
738         int retval;
739         retval = usb_serial_register(&sierra_device);
740         if (retval)
741                 goto failed_device_register;
742
743
744         retval = usb_register(&sierra_driver);
745         if (retval)
746                 goto failed_driver_register;
747
748         info(DRIVER_DESC ": " DRIVER_VERSION);
749
750         return 0;
751
752 failed_driver_register:
753         usb_serial_deregister(&sierra_device);
754 failed_device_register:
755         return retval;
756 }
757
758 static void __exit sierra_exit(void)
759 {
760         usb_deregister(&sierra_driver);
761         usb_serial_deregister(&sierra_device);
762 }
763
764 module_init(sierra_init);
765 module_exit(sierra_exit);
766
767 MODULE_AUTHOR(DRIVER_AUTHOR);
768 MODULE_DESCRIPTION(DRIVER_DESC);
769 MODULE_VERSION(DRIVER_VERSION);
770 MODULE_LICENSE("GPL");
771
772 module_param(truinstall, bool, 0);
773 MODULE_PARM_DESC(truinstall, "TRU-Install support");
774
775 module_param(nmea, bool, 0);
776 MODULE_PARM_DESC(nmea, "NMEA streaming");
777
778 #ifdef CONFIG_USB_DEBUG
779 module_param(debug, bool, S_IRUGO | S_IWUSR);
780 MODULE_PARM_DESC(debug, "Debug messages");
781 #endif
782