?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / usb / serial / sierra.c
blob7b02a4ae1da4494cfed5196594260a0e59004e7c
1 /*
2 USB Driver for Sierra Wireless
3
4 Copyright (C) 2006, 2007, 2008 Kevin Lloyd <linux@sierrawireless.com>
5
6 IMPORTANT DISCLAIMER: This driver is not commercially supported by
7 Sierra Wireless. Use at your own risk.
8
9 This driver is free software; you can redistribute it and/or modify
10 it under the terms of Version 2 of the GNU General Public License as
11 published by the Free Software Foundation.
12
13 Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
14 Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
15 */
16
17 #define DRIVER_VERSION "v.1.2.8"
18 #define DRIVER_AUTHOR "Kevin Lloyd <linux@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_TYPE_VSC_SET 0x40
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 static int truinstall = 1;
45
46 enum devicetype {
47 DEVICE_3_PORT = 0,
48 DEVICE_1_PORT = 1,
49 DEVICE_INSTALLER = 2,
50 };
51
52 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
53 {
54 int result;
55 dev_dbg(&udev->dev, "%s", "SET POWER STATE\n");
56 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
57 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
58 SWIMS_USB_REQUEST_TYPE_VSC_SET, /* __u8 request type */
59 swiState, /* __u16 value */
60 0, /* __u16 index */
61 NULL, /* void *data */
62 0, /* __u16 size */
63 USB_CTRL_SET_TIMEOUT); /* int timeout */
64 return result;
65 }
66
67 static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSWocMode)
68 {
69 int result;
70 dev_dbg(&udev->dev, "%s", "DEVICE MODE SWITCH\n");
71 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
72 SWIMS_USB_REQUEST_SetMode, /* __u8 request */
73 SWIMS_USB_REQUEST_TYPE_VSC_SET, /* __u8 request type */
74 eSWocMode, /* __u16 value */
75 0x0000, /* __u16 index */
76 NULL, /* void *data */
77 0, /* __u16 size */
78 USB_CTRL_SET_TIMEOUT); /* int timeout */
79 return result;
80 }
81
82 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
83 {
84 int result;
85 dev_dbg(&udev->dev, "%s", "NMEA Enable sent\n");
86 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
87 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
88 SWIMS_USB_REQUEST_TYPE_VSC_SET, /* __u8 request type */
89 enable, /* __u16 value */
90 0x0000, /* __u16 index */
91 NULL, /* void *data */
92 0, /* __u16 size */
93 USB_CTRL_SET_TIMEOUT); /* int timeout */
94 return result;
95 }
96
97 static int sierra_calc_num_ports(struct usb_serial *serial)
98 {
99 int result;
100 int *num_ports = usb_get_serial_data(serial);
101
102 result = *num_ports;
103
104 if (result) {
105 kfree(num_ports);
106 usb_set_serial_data(serial, NULL);
107 }
108
109 return result;
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
120 num_ports = kmalloc(sizeof(*num_ports), GFP_KERNEL);
121 if (!num_ports)
122 return -ENOMEM;
123
124 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
125 udev = serial->dev;
126
127 /* Check if in installer mode */
128 if (truinstall && id->driver_info == DEVICE_INSTALLER) {
129 dev_dbg(&udev->dev, "%s", "FOUND TRU-INSTALL DEVICE(SW)\n");
130 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
131 /* Don't bind to the device when in installer mode */
132 kfree(num_ports);
133 return -EIO;
134 } else if (id->driver_info == DEVICE_1_PORT)
135 *num_ports = 1;
136 else if (ifnum == 0x99)
137 *num_ports = 0;
138 else
139 *num_ports = 3;
140 /*
141 * save off our num_ports info so that we can use it in the
142 * calc_num_ports callback
143 */
144 usb_set_serial_data(serial, (void *)num_ports);
145
146 return result;
147 }
148
149 static struct usb_device_id id_table [] = {
150 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
151 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
152 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
153 { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
154 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
155 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
156 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
157 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
158 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
159 { USB_DEVICE(0x1199, 0x0023) }, /* Sierra Wireless AirCard */
160
161 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
162 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
163 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
164 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
165 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Thinkpad internal) */
166 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
167 { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */
168 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
169 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
170 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
171 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
172 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
173 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
174 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
175 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
176 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
177
178 { USB_DEVICE(0x1199, 0x6468) }, /* Sierra Wireless MP3G - EVDO */
179 { USB_DEVICE(0x1199, 0x6469) }, /* Sierra Wireless MP3G - UMTS/HSPA */
180
181 { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
182 { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
183
184 { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
185 { }
186 };
187 MODULE_DEVICE_TABLE(usb, id_table);
188
189 static struct usb_driver sierra_driver = {
190 .name = "sierra",
191 .probe = usb_serial_probe,
192 .disconnect = usb_serial_disconnect,
193 .id_table = id_table,
194 .no_dynamic_id = 1,
195 };
196
197 struct sierra_port_private {
198 spinlock_t lock; /* lock the structure */
199 int outstanding_urbs; /* number of out urbs in flight */
200
201 /* Input endpoints and buffers for this port */
202 struct urb *in_urbs[N_IN_URB];
203 char *in_buffer[N_IN_URB];
204
205 /* Settings for the port */
206 int rts_state; /* Handshaking pins (outputs) */
207 int dtr_state;
208 int cts_state; /* Handshaking pins (inputs) */
209 int dsr_state;
210 int dcd_state;
211 int ri_state;
212 };
213
214 static int sierra_send_setup(struct usb_serial_port *port)
215 {
216 struct usb_serial *serial = port->serial;
217 struct sierra_port_private *portdata;
218 __u16 interface = 0;
219
220 dbg("%s", __FUNCTION__);
221
222 portdata = usb_get_serial_port_data(port);
223
224 if (port->tty) {
225 int val = 0;
226 if (portdata->dtr_state)
227 val |= 0x01;
228 if (portdata->rts_state)
229 val |= 0x02;
230
231 /* Determine which port is targeted */
232 if (port->bulk_out_endpointAddress == 2)
233 interface = 0;
234 else if (port->bulk_out_endpointAddress == 4)
235 interface = 1;
236 else if (port->bulk_out_endpointAddress == 5)
237 interface = 2;
238
239 return usb_control_msg(serial->dev,
240 usb_rcvctrlpipe(serial->dev, 0),
241 0x22, 0x21, val, interface,
242 NULL, 0, USB_CTRL_SET_TIMEOUT);
243 }
244
245 return 0;
246 }
247
248 static void sierra_rx_throttle(struct usb_serial_port *port)
249 {
250 dbg("%s", __FUNCTION__);
251 }
252
253 static void sierra_rx_unthrottle(struct usb_serial_port *port)
254 {
255 dbg("%s", __FUNCTION__);
256 }
257
258 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
259 {
260 /* Unfortunately, I don't know how to send a break */
261 dbg("%s", __FUNCTION__);
262 }
263
264 static void sierra_set_termios(struct usb_serial_port *port,
265 struct ktermios *old_termios)
266 {
267 dbg("%s", __FUNCTION__);
268 tty_termios_copy_hw(port->tty->termios, old_termios);
269 sierra_send_setup(port);
270 }
271
272 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
273 {
274 unsigned int value;
275 struct sierra_port_private *portdata;
276
277 portdata = usb_get_serial_port_data(port);
278
279 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
280 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
281 ((portdata->cts_state) ? TIOCM_CTS : 0) |
282 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
283 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
284 ((portdata->ri_state) ? TIOCM_RNG : 0);
285
286 return value;
287 }
288
289 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
290 unsigned int set, unsigned int clear)
291 {
292 struct sierra_port_private *portdata;
293
294 portdata = usb_get_serial_port_data(port);
295
296 if (set & TIOCM_RTS)
297 portdata->rts_state = 1;
298 if (set & TIOCM_DTR)
299 portdata->dtr_state = 1;
300
301 if (clear & TIOCM_RTS)
302 portdata->rts_state = 0;
303 if (clear & TIOCM_DTR)
304 portdata->dtr_state = 0;
305 return sierra_send_setup(port);
306 }
307
308 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
309 unsigned int cmd, unsigned long arg)
310 {
311 return -ENOIOCTLCMD;
312 }
313
314 static void sierra_outdat_callback(struct urb *urb)
315 {
316 struct usb_serial_port *port = urb->context;
317 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
318 int status = urb->status;
319 unsigned long flags;
320
321 dbg("%s - port %d", __FUNCTION__, port->number);
322
323 /* free up the transfer buffer, as usb_free_urb() does not do this */
324 kfree(urb->transfer_buffer);
325
326 if (status)
327 dbg("%s - nonzero write bulk status received: %d",
328 __FUNCTION__, status);
329
330 spin_lock_irqsave(&portdata->lock, flags);
331 --portdata->outstanding_urbs;
332 spin_unlock_irqrestore(&portdata->lock, flags);
333
334 usb_serial_port_softint(port);
335 }
336
337 /* Write */
338 static int sierra_write(struct usb_serial_port *port,
339 const unsigned char *buf, int count)
340 {
341 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
342 struct usb_serial *serial = port->serial;
343 unsigned long flags;
344 unsigned char *buffer;
345 struct urb *urb;
346 int status;
347
348 portdata = usb_get_serial_port_data(port);
349
350 dbg("%s: write (%d chars)", __FUNCTION__, count);
351
352 spin_lock_irqsave(&portdata->lock, flags);
353 if (portdata->outstanding_urbs > N_OUT_URB) {
354 spin_unlock_irqrestore(&portdata->lock, flags);
355 dbg("%s - write limit hit\n", __FUNCTION__);
356 return 0;
357 }
358 portdata->outstanding_urbs++;
359 spin_unlock_irqrestore(&portdata->lock, flags);
360
361 buffer = kmalloc(count, GFP_ATOMIC);
362 if (!buffer) {
363 dev_err(&port->dev, "out of memory\n");
364 count = -ENOMEM;
365 goto error_no_buffer;
366 }
367
368 urb = usb_alloc_urb(0, GFP_ATOMIC);
369 if (!urb) {
370 dev_err(&port->dev, "no more free urbs\n");
371 count = -ENOMEM;
372 goto error_no_urb;
373 }
374
375 memcpy(buffer, buf, count);
376
377 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
378
379 usb_fill_bulk_urb(urb, serial->dev,
380 usb_sndbulkpipe(serial->dev,
381 port->bulk_out_endpointAddress),
382 buffer, count, sierra_outdat_callback, port);
383
384 /* send it down the pipe */
385 status = usb_submit_urb(urb, GFP_ATOMIC);
386 if (status) {
387 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
388 "with status = %d\n", __FUNCTION__, status);
389 count = status;
390 goto error;
391 }
392
393 /* we are done with this urb, so let the host driver
394 * really free it when it is finished with it */
395 usb_free_urb(urb);
396
397 return count;
398 error:
399 usb_free_urb(urb);
400 error_no_urb:
401 kfree(buffer);
402 error_no_buffer:
403 spin_lock_irqsave(&portdata->lock, flags);
404 --portdata->outstanding_urbs;
405 spin_unlock_irqrestore(&portdata->lock, flags);
406 return count;
407 }
408
409 static void sierra_indat_callback(struct urb *urb)
410 {
411 int err;
412 int endpoint;
413 struct usb_serial_port *port;
414 struct tty_struct *tty;
415 unsigned char *data = urb->transfer_buffer;
416 int status = urb->status;
417
418 dbg("%s: %p", __FUNCTION__, urb);
419
420 endpoint = usb_pipeendpoint(urb->pipe);
421 port = (struct usb_serial_port *) urb->context;
422
423 if (status) {
424 dbg("%s: nonzero status: %d on endpoint %02x.",
425 __FUNCTION__, status, endpoint);
426 } else {
427 tty = port->tty;
428 if (urb->actual_length) {
429 tty_buffer_request_room(tty, urb->actual_length);
430 tty_insert_flip_string(tty, data, urb->actual_length);
431 tty_flip_buffer_push(tty);
432 } else {
433 dbg("%s: empty read urb received", __FUNCTION__);
434 }
435
436 /* Resubmit urb so we continue receiving */
437 if (port->open_count && status != -ESHUTDOWN) {
438 err = usb_submit_urb(urb, GFP_ATOMIC);
439 if (err)
440 dev_err(&port->dev, "resubmit read urb failed."
441 "(%d)\n", err);
442 }
443 }
444 return;
445 }
446
447 static void sierra_instat_callback(struct urb *urb)
448 {
449 int err;
450 int status = urb->status;
451 struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
452 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
453 struct usb_serial *serial = port->serial;
454
455 dbg("%s", __FUNCTION__);
456 dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
457
458 if (status == 0) {
459 struct usb_ctrlrequest *req_pkt =
460 (struct usb_ctrlrequest *)urb->transfer_buffer;
461
462 if (!req_pkt) {
463 dbg("%s: NULL req_pkt\n", __FUNCTION__);
464 return;
465 }
466 if ((req_pkt->bRequestType == 0xA1) &&
467 (req_pkt->bRequest == 0x20)) {
468 int old_dcd_state;
469 unsigned char signals = *((unsigned char *)
470 urb->transfer_buffer +
471 sizeof(struct usb_ctrlrequest));
472
473 dbg("%s: signal x%x", __FUNCTION__, signals);
474
475 old_dcd_state = portdata->dcd_state;
476 portdata->cts_state = 1;
477 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
478 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
479 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
480
481 if (port->tty && !C_CLOCAL(port->tty) &&
482 old_dcd_state && !portdata->dcd_state)
483 tty_hangup(port->tty);
484 } else {
485 dbg("%s: type %x req %x", __FUNCTION__,
486 req_pkt->bRequestType,req_pkt->bRequest);
487 }
488 } else
489 dbg("%s: error %d", __FUNCTION__, status);
490
491 /* Resubmit urb so we continue receiving IRQ data */
492 if (status != -ESHUTDOWN) {
493 urb->dev = serial->dev;
494 err = usb_submit_urb(urb, GFP_ATOMIC);
495 if (err)
496 dbg("%s: resubmit intr urb failed. (%d)",
497 __FUNCTION__, err);
498 }
499 }
500
501 static int sierra_write_room(struct usb_serial_port *port)
502 {
503 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
504 unsigned long flags;
505
506 dbg("%s - port %d", __FUNCTION__, port->number);
507
508 /* try to give a good number back based on if we have any free urbs at
509 * this point in time */
510 spin_lock_irqsave(&portdata->lock, flags);
511 if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
512 spin_unlock_irqrestore(&portdata->lock, flags);
513 dbg("%s - write limit hit\n", __FUNCTION__);
514 return 0;
515 }
516 spin_unlock_irqrestore(&portdata->lock, flags);
517
518 return 2048;
519 }
520
521 static int sierra_chars_in_buffer(struct usb_serial_port *port)
522 {
523 dbg("%s - port %d", __FUNCTION__, port->number);
524
525 /*
526 * We can't really account for how much data we
527 * have sent out, but hasn't made it through to the
528 * device as we can't see the backend here, so just
529 * tell the tty layer that everything is flushed.
530 */
531 return 0;
532 }
533
534 static int sierra_open(struct usb_serial_port *port, struct file *filp)
535 {
536 struct sierra_port_private *portdata;
537 struct usb_serial *serial = port->serial;
538 int i;
539 struct urb *urb;
540 int result;
541
542 portdata = usb_get_serial_port_data(port);
543
544 dbg("%s", __FUNCTION__);
545
546 /* Set some sane defaults */
547 portdata->rts_state = 1;
548 portdata->dtr_state = 1;
549
550 /* Reset low level data toggle and start reading from endpoints */
551 for (i = 0; i < N_IN_URB; i++) {
552 urb = portdata->in_urbs[i];
553 if (!urb)
554 continue;
555 if (urb->dev != serial->dev) {
556 dbg("%s: dev %p != %p", __FUNCTION__,
557 urb->dev, serial->dev);
558 continue;
559 }
560
561 /*
562 * make sure endpoint data toggle is synchronized with the
563 * device
564 */
565 usb_clear_halt(urb->dev, urb->pipe);
566
567 result = usb_submit_urb(urb, GFP_KERNEL);
568 if (result) {
569 dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
570 i, result, urb->transfer_buffer_length);
571 }
572 }
573
574 port->tty->low_latency = 1;
575
576 sierra_send_setup(port);
577
578 /* start up the interrupt endpoint if we have one */
579 if (port->interrupt_in_urb) {
580 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
581 if (result)
582 dev_err(&port->dev, "submit irq_in urb failed %d\n",
583 result);
584 }
585 return 0;
586 }
587
588 static void sierra_close(struct usb_serial_port *port, struct file *filp)
589 {
590 int i;
591 struct usb_serial *serial = port->serial;
592 struct sierra_port_private *portdata;
593
594 dbg("%s", __FUNCTION__);
595 portdata = usb_get_serial_port_data(port);
596
597 portdata->rts_state = 0;
598 portdata->dtr_state = 0;
599
600 if (serial->dev) {
601 mutex_lock(&serial->disc_mutex);
602 if (!serial->disconnected)
603 sierra_send_setup(port);
604 mutex_unlock(&serial->disc_mutex);
605
606 /* Stop reading/writing urbs */
607 for (i = 0; i < N_IN_URB; i++)
608 usb_kill_urb(portdata->in_urbs[i]);
609 }
610
611 usb_kill_urb(port->interrupt_in_urb);
612
613 port->tty = NULL;
614 }
615
616 static int sierra_startup(struct usb_serial *serial)
617 {
618 struct usb_serial_port *port;
619 struct sierra_port_private *portdata;
620 struct urb *urb;
621 int i;
622 int j;
623
624 dbg("%s", __FUNCTION__);
625
626 /* Set Device mode to D0 */
627 sierra_set_power_state(serial->dev, 0x0000);
628
629 /* Check NMEA and set */
630 if (nmea)
631 sierra_vsc_set_nmea(serial->dev, 1);
632
633 /* Now setup per port private data */
634 for (i = 0; i < serial->num_ports; i++) {
635 port = serial->port[i];
636 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
637 if (!portdata) {
638 dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
639 __FUNCTION__, i);
640 return -ENOMEM;
641 }
642 spin_lock_init(&portdata->lock);
643 for (j = 0; j < N_IN_URB; j++) {
644 portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
645 if (!portdata->in_buffer[j]) {
646 for (--j; j >= 0; j--)
647 kfree(portdata->in_buffer[j]);
648 kfree(portdata);
649 return -ENOMEM;
650 }
651 }
652
653 usb_set_serial_port_data(port, portdata);
654
655 /* initialize the in urbs */
656 for (j = 0; j < N_IN_URB; ++j) {
657 urb = usb_alloc_urb(0, GFP_KERNEL);
658 if (urb == NULL) {
659 dbg("%s: alloc for in port failed.",
660 __FUNCTION__);
661 continue;
662 }
663 /* Fill URB using supplied data. */
664 usb_fill_bulk_urb(urb, serial->dev,
665 usb_rcvbulkpipe(serial->dev,
666 port->bulk_in_endpointAddress),
667 portdata->in_buffer[j], IN_BUFLEN,
668 sierra_indat_callback, port);
669 portdata->in_urbs[j] = urb;
670 }
671 }
672
673 return 0;
674 }
675
676 static void sierra_shutdown(struct usb_serial *serial)
677 {
678 int i, j;
679 struct usb_serial_port *port;
680 struct sierra_port_private *portdata;
681
682 dbg("%s", __FUNCTION__);
683
684 for (i = 0; i < serial->num_ports; ++i) {
685 port = serial->port[i];
686 if (!port)
687 continue;
688 portdata = usb_get_serial_port_data(port);
689 if (!portdata)
690 continue;
691
692 for (j = 0; j < N_IN_URB; j++) {
693 usb_kill_urb(portdata->in_urbs[j]);
694 usb_free_urb(portdata->in_urbs[j]);
695 kfree(portdata->in_buffer[j]);
696 }
697 kfree(portdata);
698 usb_set_serial_port_data(port, NULL);
699 }
700 }
701
702 static struct usb_serial_driver sierra_device = {
703 .driver = {
704 .owner = THIS_MODULE,
705 .name = "sierra1",
706 },
707 .description = "Sierra USB modem",
708 .id_table = id_table,
709 .usb_driver = &sierra_driver,
710 .num_interrupt_in = NUM_DONT_CARE,
711 .num_bulk_in = NUM_DONT_CARE,
712 .num_bulk_out = NUM_DONT_CARE,
713 .calc_num_ports = sierra_calc_num_ports,
714 .probe = sierra_probe,
715 .open = sierra_open,
716 .close = sierra_close,
717 .write = sierra_write,
718 .write_room = sierra_write_room,
719 .chars_in_buffer = sierra_chars_in_buffer,
720 .throttle = sierra_rx_throttle,
721 .unthrottle = sierra_rx_unthrottle,
722 .ioctl = sierra_ioctl,
723 .set_termios = sierra_set_termios,
724 .break_ctl = sierra_break_ctl,
725 .tiocmget = sierra_tiocmget,
726 .tiocmset = sierra_tiocmset,
727 .attach = sierra_startup,
728 .shutdown = sierra_shutdown,
729 .read_int_callback = sierra_instat_callback,
730 };
731
732 /* Functions used by new usb-serial code. */
733 static int __init sierra_init(void)
734 {
735 int retval;
736 retval = usb_serial_register(&sierra_device);
737 if (retval)
738 goto failed_device_register;
739
740
741 retval = usb_register(&sierra_driver);
742 if (retval)
743 goto failed_driver_register;
744
745 info(DRIVER_DESC ": " DRIVER_VERSION);
746
747 return 0;
748
749 failed_driver_register:
750 usb_serial_deregister(&sierra_device);
751 failed_device_register:
752 return retval;
753 }
754
755 static void __exit sierra_exit(void)
756 {
757 usb_deregister (&sierra_driver);
758 usb_serial_deregister(&sierra_device);
759 }
760
761 module_init(sierra_init);
762 module_exit(sierra_exit);
763
764 MODULE_AUTHOR(DRIVER_AUTHOR);
765 MODULE_DESCRIPTION(DRIVER_DESC);
766 MODULE_VERSION(DRIVER_VERSION);
767 MODULE_LICENSE("GPL");
768
769 module_param(truinstall, bool, 0);
770 MODULE_PARM_DESC(truinstall, "TRU-Install support");
771
772 module_param(nmea, bool, 0);
773 MODULE_PARM_DESC(nmea, "NMEA streaming");
774
775 #ifdef CONFIG_USB_DEBUG
776 module_param(debug, bool, S_IRUGO | S_IWUSR);
777 MODULE_PARM_DESC(debug, "Debug messages");
778 #endif
779
mah project overlay