USB: replace remaining __FUNCTION__ occurrences
[linux-2.6.git] / 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 usb_serial_port *port)
254 {
255         struct usb_serial *serial = port->serial;
256         struct sierra_port_private *portdata;
257         __u16 interface = 0;
258
259         dbg("%s", __func__);
260
261         portdata = usb_get_serial_port_data(port);
262
263         if (port->tty) {
264                 int val = 0;
265                 if (portdata->dtr_state)
266                         val |= 0x01;
267                 if (portdata->rts_state)
268                         val |= 0x02;
269
270                 /* Determine which port is targeted */
271                 if (port->bulk_out_endpointAddress == 2)
272                         interface = 0;
273                 else if (port->bulk_out_endpointAddress == 4)
274                         interface = 1;
275                 else if (port->bulk_out_endpointAddress == 5)
276                         interface = 2;
277
278                 return usb_control_msg(serial->dev,
279                                 usb_rcvctrlpipe(serial->dev, 0),
280                                 0x22, 0x21, val, interface,
281                                 NULL, 0, USB_CTRL_SET_TIMEOUT);
282         }
283
284         return 0;
285 }
286
287 static void sierra_rx_throttle(struct usb_serial_port *port)
288 {
289         dbg("%s", __func__);
290 }
291
292 static void sierra_rx_unthrottle(struct usb_serial_port *port)
293 {
294         dbg("%s", __func__);
295 }
296
297 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
298 {
299         /* Unfortunately, I don't know how to send a break */
300         dbg("%s", __func__);
301 }
302
303 static void sierra_set_termios(struct usb_serial_port *port,
304                         struct ktermios *old_termios)
305 {
306         dbg("%s", __func__);
307         tty_termios_copy_hw(port->tty->termios, old_termios);
308         sierra_send_setup(port);
309 }
310
311 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
312 {
313         unsigned int value;
314         struct sierra_port_private *portdata;
315
316         portdata = usb_get_serial_port_data(port);
317
318         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
319                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
320                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
321                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
322                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
323                 ((portdata->ri_state) ? TIOCM_RNG : 0);
324
325         return value;
326 }
327
328 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
329                         unsigned int set, unsigned int clear)
330 {
331         struct sierra_port_private *portdata;
332
333         portdata = usb_get_serial_port_data(port);
334
335         if (set & TIOCM_RTS)
336                 portdata->rts_state = 1;
337         if (set & TIOCM_DTR)
338                 portdata->dtr_state = 1;
339
340         if (clear & TIOCM_RTS)
341                 portdata->rts_state = 0;
342         if (clear & TIOCM_DTR)
343                 portdata->dtr_state = 0;
344         return sierra_send_setup(port);
345 }
346
347 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
348                         unsigned int cmd, unsigned long arg)
349 {
350         return -ENOIOCTLCMD;
351 }
352
353 static void sierra_outdat_callback(struct urb *urb)
354 {
355         struct usb_serial_port *port = urb->context;
356         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
357         int status = urb->status;
358         unsigned long flags;
359
360         dbg("%s - port %d", __func__, port->number);
361
362         /* free up the transfer buffer, as usb_free_urb() does not do this */
363         kfree(urb->transfer_buffer);
364
365         if (status)
366                 dbg("%s - nonzero write bulk status received: %d",
367                     __func__, status);
368
369         spin_lock_irqsave(&portdata->lock, flags);
370         --portdata->outstanding_urbs;
371         spin_unlock_irqrestore(&portdata->lock, flags);
372
373         usb_serial_port_softint(port);
374 }
375
376 /* Write */
377 static int sierra_write(struct usb_serial_port *port,
378                         const unsigned char *buf, int count)
379 {
380         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
381         struct usb_serial *serial = port->serial;
382         unsigned long flags;
383         unsigned char *buffer;
384         struct urb *urb;
385         int status;
386
387         portdata = usb_get_serial_port_data(port);
388
389         dbg("%s: write (%d chars)", __func__, count);
390
391         spin_lock_irqsave(&portdata->lock, flags);
392         if (portdata->outstanding_urbs > N_OUT_URB) {
393                 spin_unlock_irqrestore(&portdata->lock, flags);
394                 dbg("%s - write limit hit\n", __func__);
395                 return 0;
396         }
397         portdata->outstanding_urbs++;
398         spin_unlock_irqrestore(&portdata->lock, flags);
399
400         buffer = kmalloc(count, GFP_ATOMIC);
401         if (!buffer) {
402                 dev_err(&port->dev, "out of memory\n");
403                 count = -ENOMEM;
404                 goto error_no_buffer;
405         }
406
407         urb = usb_alloc_urb(0, GFP_ATOMIC);
408         if (!urb) {
409                 dev_err(&port->dev, "no more free urbs\n");
410                 count = -ENOMEM;
411                 goto error_no_urb;
412         }
413
414         memcpy(buffer, buf, count);
415
416         usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
417
418         usb_fill_bulk_urb(urb, serial->dev,
419                           usb_sndbulkpipe(serial->dev,
420                                           port->bulk_out_endpointAddress),
421                           buffer, count, sierra_outdat_callback, port);
422
423         /* send it down the pipe */
424         status = usb_submit_urb(urb, GFP_ATOMIC);
425         if (status) {
426                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
427                         "with status = %d\n", __func__, status);
428                 count = status;
429                 goto error;
430         }
431
432         /* we are done with this urb, so let the host driver
433          * really free it when it is finished with it */
434         usb_free_urb(urb);
435
436         return count;
437 error:
438         usb_free_urb(urb);
439 error_no_urb:
440         kfree(buffer);
441 error_no_buffer:
442         spin_lock_irqsave(&portdata->lock, flags);
443         --portdata->outstanding_urbs;
444         spin_unlock_irqrestore(&portdata->lock, flags);
445         return count;
446 }
447
448 static void sierra_indat_callback(struct urb *urb)
449 {
450         int err;
451         int endpoint;
452         struct usb_serial_port *port;
453         struct tty_struct *tty;
454         unsigned char *data = urb->transfer_buffer;
455         int status = urb->status;
456
457         dbg("%s: %p", __func__, urb);
458
459         endpoint = usb_pipeendpoint(urb->pipe);
460         port = (struct usb_serial_port *) urb->context;
461
462         if (status) {
463                 dbg("%s: nonzero status: %d on endpoint %02x.",
464                     __func__, status, endpoint);
465         } else {
466                 tty = port->tty;
467                 if (urb->actual_length) {
468                         tty_buffer_request_room(tty, urb->actual_length);
469                         tty_insert_flip_string(tty, data, urb->actual_length);
470                         tty_flip_buffer_push(tty);
471                 } else {
472                         dbg("%s: empty read urb received", __func__);
473                 }
474
475                 /* Resubmit urb so we continue receiving */
476                 if (port->open_count && status != -ESHUTDOWN) {
477                         err = usb_submit_urb(urb, GFP_ATOMIC);
478                         if (err)
479                                 dev_err(&port->dev, "resubmit read urb failed."
480                                         "(%d)\n", err);
481                 }
482         }
483         return;
484 }
485
486 static void sierra_instat_callback(struct urb *urb)
487 {
488         int err;
489         int status = urb->status;
490         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
491         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
492         struct usb_serial *serial = port->serial;
493
494         dbg("%s", __func__);
495         dbg("%s: urb %p port %p has data %p", __func__, urb, port, portdata);
496
497         if (status == 0) {
498                 struct usb_ctrlrequest *req_pkt =
499                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
500
501                 if (!req_pkt) {
502                         dbg("%s: NULL req_pkt\n", __func__);
503                         return;
504                 }
505                 if ((req_pkt->bRequestType == 0xA1) &&
506                                 (req_pkt->bRequest == 0x20)) {
507                         int old_dcd_state;
508                         unsigned char signals = *((unsigned char *)
509                                         urb->transfer_buffer +
510                                         sizeof(struct usb_ctrlrequest));
511
512                         dbg("%s: signal x%x", __func__, signals);
513
514                         old_dcd_state = portdata->dcd_state;
515                         portdata->cts_state = 1;
516                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
517                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
518                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
519
520                         if (port->tty && !C_CLOCAL(port->tty) &&
521                                         old_dcd_state && !portdata->dcd_state)
522                                 tty_hangup(port->tty);
523                 } else {
524                         dbg("%s: type %x req %x", __func__,
525                                 req_pkt->bRequestType, req_pkt->bRequest);
526                 }
527         } else
528                 dbg("%s: error %d", __func__, status);
529
530         /* Resubmit urb so we continue receiving IRQ data */
531         if (status != -ESHUTDOWN) {
532                 urb->dev = serial->dev;
533                 err = usb_submit_urb(urb, GFP_ATOMIC);
534                 if (err)
535                         dbg("%s: resubmit intr urb failed. (%d)",
536                                 __func__, err);
537         }
538 }
539
540 static int sierra_write_room(struct usb_serial_port *port)
541 {
542         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
543         unsigned long flags;
544
545         dbg("%s - port %d", __func__, port->number);
546
547         /* try to give a good number back based on if we have any free urbs at
548          * this point in time */
549         spin_lock_irqsave(&portdata->lock, flags);
550         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
551                 spin_unlock_irqrestore(&portdata->lock, flags);
552                 dbg("%s - write limit hit\n", __func__);
553                 return 0;
554         }
555         spin_unlock_irqrestore(&portdata->lock, flags);
556
557         return 2048;
558 }
559
560 static int sierra_chars_in_buffer(struct usb_serial_port *port)
561 {
562         dbg("%s - port %d", __func__, port->number);
563
564         /*
565          * We can't really account for how much data we
566          * have sent out, but hasn't made it through to the
567          * device as we can't see the backend here, so just
568          * tell the tty layer that everything is flushed.
569          */
570         return 0;
571 }
572
573 static int sierra_open(struct usb_serial_port *port, struct file *filp)
574 {
575         struct sierra_port_private *portdata;
576         struct usb_serial *serial = port->serial;
577         int i;
578         struct urb *urb;
579         int result;
580
581         portdata = usb_get_serial_port_data(port);
582
583         dbg("%s", __func__);
584
585         /* Set some sane defaults */
586         portdata->rts_state = 1;
587         portdata->dtr_state = 1;
588
589         /* Reset low level data toggle and start reading from endpoints */
590         for (i = 0; i < N_IN_URB; i++) {
591                 urb = portdata->in_urbs[i];
592                 if (!urb)
593                         continue;
594                 if (urb->dev != serial->dev) {
595                         dbg("%s: dev %p != %p", __func__,
596                                 urb->dev, serial->dev);
597                         continue;
598                 }
599
600                 /*
601                  * make sure endpoint data toggle is synchronized with the
602                  * device
603                  */
604                 usb_clear_halt(urb->dev, urb->pipe);
605
606                 result = usb_submit_urb(urb, GFP_KERNEL);
607                 if (result) {
608                         dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
609                                 i, result, urb->transfer_buffer_length);
610                 }
611         }
612
613         port->tty->low_latency = 1;
614
615         sierra_send_setup(port);
616
617         /* start up the interrupt endpoint if we have one */
618         if (port->interrupt_in_urb) {
619                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
620                 if (result)
621                         dev_err(&port->dev, "submit irq_in urb failed %d\n",
622                                 result);
623         }
624         return 0;
625 }
626
627 static void sierra_close(struct usb_serial_port *port, struct file *filp)
628 {
629         int i;
630         struct usb_serial *serial = port->serial;
631         struct sierra_port_private *portdata;
632
633         dbg("%s", __func__);
634         portdata = usb_get_serial_port_data(port);
635
636         portdata->rts_state = 0;
637         portdata->dtr_state = 0;
638
639         if (serial->dev) {
640                 mutex_lock(&serial->disc_mutex);
641                 if (!serial->disconnected)
642                         sierra_send_setup(port);
643                 mutex_unlock(&serial->disc_mutex);
644
645                 /* Stop reading/writing urbs */
646                 for (i = 0; i < N_IN_URB; i++)
647                         usb_kill_urb(portdata->in_urbs[i]);
648         }
649
650         usb_kill_urb(port->interrupt_in_urb);
651
652         port->tty = NULL;
653 }
654
655 static int sierra_startup(struct usb_serial *serial)
656 {
657         struct usb_serial_port *port;
658         struct sierra_port_private *portdata;
659         struct urb *urb;
660         int i;
661         int j;
662
663         dbg("%s", __func__);
664
665         /* Set Device mode to D0 */
666         sierra_set_power_state(serial->dev, 0x0000);
667
668         /* Check NMEA and set */
669         if (nmea)
670                 sierra_vsc_set_nmea(serial->dev, 1);
671
672         /* Now setup per port private data */
673         for (i = 0; i < serial->num_ports; i++) {
674                 port = serial->port[i];
675                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
676                 if (!portdata) {
677                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
678                                         __func__, i);
679                         return -ENOMEM;
680                 }
681                 spin_lock_init(&portdata->lock);
682                 for (j = 0; j < N_IN_URB; j++) {
683                         portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
684                         if (!portdata->in_buffer[j]) {
685                                 for (--j; j >= 0; j--)
686                                         kfree(portdata->in_buffer[j]);
687                                 kfree(portdata);
688                                 return -ENOMEM;
689                         }
690                 }
691
692                 usb_set_serial_port_data(port, portdata);
693
694                 /* initialize the in urbs */
695                 for (j = 0; j < N_IN_URB; ++j) {
696                         urb = usb_alloc_urb(0, GFP_KERNEL);
697                         if (urb == NULL) {
698                                 dbg("%s: alloc for in port failed.",
699                                     __func__);
700                                 continue;
701                         }
702                         /* Fill URB using supplied data. */
703                         usb_fill_bulk_urb(urb, serial->dev,
704                                           usb_rcvbulkpipe(serial->dev,
705                                                 port->bulk_in_endpointAddress),
706                                           portdata->in_buffer[j], IN_BUFLEN,
707                                           sierra_indat_callback, port);
708                         portdata->in_urbs[j] = urb;
709                 }
710         }
711
712         return 0;
713 }
714
715 static void sierra_shutdown(struct usb_serial *serial)
716 {
717         int i, j;
718         struct usb_serial_port *port;
719         struct sierra_port_private *portdata;
720
721         dbg("%s", __func__);
722
723         for (i = 0; i < serial->num_ports; ++i) {
724                 port = serial->port[i];
725                 if (!port)
726                         continue;
727                 portdata = usb_get_serial_port_data(port);
728                 if (!portdata)
729                         continue;
730
731                 for (j = 0; j < N_IN_URB; j++) {
732                         usb_kill_urb(portdata->in_urbs[j]);
733                         usb_free_urb(portdata->in_urbs[j]);
734                         kfree(portdata->in_buffer[j]);
735                 }
736                 kfree(portdata);
737                 usb_set_serial_port_data(port, NULL);
738         }
739 }
740
741 static struct usb_serial_driver sierra_device = {
742         .driver = {
743                 .owner =        THIS_MODULE,
744                 .name =         "sierra1",
745         },
746         .description       = "Sierra USB modem",
747         .id_table          = id_table,
748         .usb_driver        = &sierra_driver,
749         .calc_num_ports    = sierra_calc_num_ports,
750         .probe             = sierra_probe,
751         .open              = sierra_open,
752         .close             = sierra_close,
753         .write             = sierra_write,
754         .write_room        = sierra_write_room,
755         .chars_in_buffer   = sierra_chars_in_buffer,
756         .throttle          = sierra_rx_throttle,
757         .unthrottle        = sierra_rx_unthrottle,
758         .ioctl             = sierra_ioctl,
759         .set_termios       = sierra_set_termios,
760         .break_ctl         = sierra_break_ctl,
761         .tiocmget          = sierra_tiocmget,
762         .tiocmset          = sierra_tiocmset,
763         .attach            = sierra_startup,
764         .shutdown          = sierra_shutdown,
765         .read_int_callback = sierra_instat_callback,
766 };
767
768 /* Functions used by new usb-serial code. */
769 static int __init sierra_init(void)
770 {
771         int retval;
772         retval = usb_serial_register(&sierra_device);
773         if (retval)
774                 goto failed_device_register;
775
776
777         retval = usb_register(&sierra_driver);
778         if (retval)
779                 goto failed_driver_register;
780
781         info(DRIVER_DESC ": " DRIVER_VERSION);
782
783         return 0;
784
785 failed_driver_register:
786         usb_serial_deregister(&sierra_device);
787 failed_device_register:
788         return retval;
789 }
790
791 static void __exit sierra_exit(void)
792 {
793         usb_deregister (&sierra_driver);
794         usb_serial_deregister(&sierra_device);
795 }
796
797 module_init(sierra_init);
798 module_exit(sierra_exit);
799
800 MODULE_AUTHOR(DRIVER_AUTHOR);
801 MODULE_DESCRIPTION(DRIVER_DESC);
802 MODULE_VERSION(DRIVER_VERSION);
803 MODULE_LICENSE("GPL");
804
805 module_param(truinstall, bool, 0);
806 MODULE_PARM_DESC(truinstall, "TRU-Install support");
807
808 module_param(nmea, bool, 0);
809 MODULE_PARM_DESC(nmea, "NMEA streaming");
810
811 #ifdef CONFIG_USB_DEBUG
812 module_param(debug, bool, S_IRUGO | S_IWUSR);
813 MODULE_PARM_DESC(debug, "Debug messages");
814 #endif
815