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added 2.6.29.6 aldebaran kernel
[nao-ulib.git] / kernel / 2.6.29.6-aldebaran-rt / drivers / usb / serial / sierra.c
blobd9bf9a5c20eca522c28341c9828d6493714e8eb6
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.1.3.2"
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
34 /* per port private data */
35 #define N_IN_URB 4
36 #define N_OUT_URB 4
37 #define IN_BUFLEN 4096
38
39 static int debug;
40 static int nmea;
41
42 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
43 {
44 int result;
45 dev_dbg(&udev->dev, "%s", __func__);
46 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
47 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
48 USB_TYPE_VENDOR, /* __u8 request type */
49 swiState, /* __u16 value */
50 0, /* __u16 index */
51 NULL, /* void *data */
52 0, /* __u16 size */
53 USB_CTRL_SET_TIMEOUT); /* int timeout */
54 return result;
55 }
56
57 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
58 {
59 int result;
60 dev_dbg(&udev->dev, "%s", __func__);
61 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
62 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
63 USB_TYPE_VENDOR, /* __u8 request type */
64 enable, /* __u16 value */
65 0x0000, /* __u16 index */
66 NULL, /* void *data */
67 0, /* __u16 size */
68 USB_CTRL_SET_TIMEOUT); /* int timeout */
69 return result;
70 }
71
72 static int sierra_calc_num_ports(struct usb_serial *serial)
73 {
74 int result;
75 int *num_ports = usb_get_serial_data(serial);
76 dev_dbg(&serial->dev->dev, "%s", __func__);
77
78 result = *num_ports;
79
80 if (result) {
81 kfree(num_ports);
82 usb_set_serial_data(serial, NULL);
83 }
84
85 return result;
86 }
87
88 static int sierra_calc_interface(struct usb_serial *serial)
89 {
90 int interface;
91 struct usb_interface *p_interface;
92 struct usb_host_interface *p_host_interface;
93 dev_dbg(&serial->dev->dev, "%s", __func__);
94
95 /* Get the interface structure pointer from the serial struct */
96 p_interface = serial->interface;
97
98 /* Get a pointer to the host interface structure */
99 p_host_interface = p_interface->cur_altsetting;
100
101 /* read the interface descriptor for this active altsetting
102 * to find out the interface number we are on
103 */
104 interface = p_host_interface->desc.bInterfaceNumber;
105
106 return interface;
107 }
108
109 static int sierra_probe(struct usb_serial *serial,
110 const struct usb_device_id *id)
111 {
112 int result = 0;
113 struct usb_device *udev;
114 int *num_ports;
115 u8 ifnum;
116 u8 numendpoints;
117
118 dev_dbg(&serial->dev->dev, "%s", __func__);
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 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
126 udev = serial->dev;
127
128 /* Figure out the interface number from the serial structure */
129 ifnum = sierra_calc_interface(serial);
130
131 /*
132 * If this interface supports more than 1 alternate
133 * select the 2nd one
134 */
135 if (serial->interface->num_altsetting == 2) {
136 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
137 ifnum);
138 /* We know the alternate setting is 1 for the MC8785 */
139 usb_set_interface(udev, ifnum, 1);
140 }
141
142 /* Dummy interface present on some SKUs should be ignored */
143 if (ifnum == 0x99)
144 *num_ports = 0;
145 else if (numendpoints <= 3)
146 *num_ports = 1;
147 else
148 *num_ports = (numendpoints-1)/2;
149
150 /*
151 * save off our num_ports info so that we can use it in the
152 * calc_num_ports callback
153 */
154 usb_set_serial_data(serial, (void *)num_ports);
155
156 return result;
157 }
158
159 static struct usb_device_id id_table [] = {
160 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
161 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
162 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
163 { USB_DEVICE(0x03f0, 0x1b1d) }, /* HP ev2200 a.k.a MC5720 */
164 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
165 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
166 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
167 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
168 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
169 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
170 /* Sierra Wireless C597 */
171 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
172 /* Sierra Wireless Device */
173 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
174 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless Device */
175 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless Device */
176 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless Device */
177
178 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
179 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
180 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
181 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
182 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Lenovo) */
183 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
184 { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */
185 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
186 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
187 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
188 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
189 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
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, 0x6891, 0xFF, 0xFF, 0xFF)},
208 /* Sierra Wireless Device */
209 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
210
211 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
212 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
213
214 { }
215 };
216 MODULE_DEVICE_TABLE(usb, id_table);
217
218 static struct usb_driver sierra_driver = {
219 .name = "sierra",
220 .probe = usb_serial_probe,
221 .disconnect = usb_serial_disconnect,
222 .id_table = id_table,
223 .no_dynamic_id = 1,
224 };
225
226 struct sierra_port_private {
227 spinlock_t lock; /* lock the structure */
228 int outstanding_urbs; /* number of out urbs in flight */
229
230 /* Input endpoints and buffers for this port */
231 struct urb *in_urbs[N_IN_URB];
232 char *in_buffer[N_IN_URB];
233
234 /* Settings for the port */
235 int rts_state; /* Handshaking pins (outputs) */
236 int dtr_state;
237 int cts_state; /* Handshaking pins (inputs) */
238 int dsr_state;
239 int dcd_state;
240 int ri_state;
241 };
242
243 static int sierra_send_setup(struct tty_struct *tty,
244 struct usb_serial_port *port)
245 {
246 struct usb_serial *serial = port->serial;
247 struct sierra_port_private *portdata;
248 __u16 interface = 0;
249
250 dev_dbg(&port->dev, "%s", __func__);
251
252 portdata = usb_get_serial_port_data(port);
253
254 if (tty) {
255 int val = 0;
256 if (portdata->dtr_state)
257 val |= 0x01;
258 if (portdata->rts_state)
259 val |= 0x02;
260
261 /* If composite device then properly report interface */
262 if (serial->num_ports == 1)
263 interface = sierra_calc_interface(serial);
264
265 /* Otherwise the need to do non-composite mapping */
266 else {
267 if (port->bulk_out_endpointAddress == 2)
268 interface = 0;
269 else if (port->bulk_out_endpointAddress == 4)
270 interface = 1;
271 else if (port->bulk_out_endpointAddress == 5)
272 interface = 2;
273 }
274
275 return usb_control_msg(serial->dev,
276 usb_rcvctrlpipe(serial->dev, 0),
277 0x22, 0x21, val, interface,
278 NULL, 0, USB_CTRL_SET_TIMEOUT);
279 }
280
281 return 0;
282 }
283
284 static void sierra_set_termios(struct tty_struct *tty,
285 struct usb_serial_port *port, struct ktermios *old_termios)
286 {
287 dev_dbg(&port->dev, "%s", __func__);
288 tty_termios_copy_hw(tty->termios, old_termios);
289 sierra_send_setup(tty, port);
290 }
291
292 static int sierra_tiocmget(struct tty_struct *tty, struct file *file)
293 {
294 struct usb_serial_port *port = tty->driver_data;
295 unsigned int value;
296 struct sierra_port_private *portdata;
297
298 dev_dbg(&port->dev, "%s", __func__);
299 portdata = usb_get_serial_port_data(port);
300
301 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
302 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
303 ((portdata->cts_state) ? TIOCM_CTS : 0) |
304 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
305 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
306 ((portdata->ri_state) ? TIOCM_RNG : 0);
307
308 return value;
309 }
310
311 static int sierra_tiocmset(struct tty_struct *tty, struct file *file,
312 unsigned int set, unsigned int clear)
313 {
314 struct usb_serial_port *port = tty->driver_data;
315 struct sierra_port_private *portdata;
316
317 portdata = usb_get_serial_port_data(port);
318
319 if (set & TIOCM_RTS)
320 portdata->rts_state = 1;
321 if (set & TIOCM_DTR)
322 portdata->dtr_state = 1;
323
324 if (clear & TIOCM_RTS)
325 portdata->rts_state = 0;
326 if (clear & TIOCM_DTR)
327 portdata->dtr_state = 0;
328 return sierra_send_setup(tty, port);
329 }
330
331 static void sierra_outdat_callback(struct urb *urb)
332 {
333 struct usb_serial_port *port = urb->context;
334 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
335 int status = urb->status;
336 unsigned long flags;
337
338 dev_dbg(&port->dev, "%s - port %d", __func__, port->number);
339
340 /* free up the transfer buffer, as usb_free_urb() does not do this */
341 kfree(urb->transfer_buffer);
342
343 if (status)
344 dev_dbg(&port->dev, "%s - nonzero write bulk status "
345 "received: %d", __func__, status);
346
347 spin_lock_irqsave(&portdata->lock, flags);
348 --portdata->outstanding_urbs;
349 spin_unlock_irqrestore(&portdata->lock, flags);
350
351 usb_serial_port_softint(port);
352 }
353
354 /* Write */
355 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
356 const unsigned char *buf, int count)
357 {
358 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
359 struct usb_serial *serial = port->serial;
360 unsigned long flags;
361 unsigned char *buffer;
362 struct urb *urb;
363 int status;
364
365 portdata = usb_get_serial_port_data(port);
366
367 dev_dbg(&port->dev, "%s: write (%d chars)", __func__, count);
368
369 spin_lock_irqsave(&portdata->lock, flags);
370 if (portdata->outstanding_urbs > N_OUT_URB) {
371 spin_unlock_irqrestore(&portdata->lock, flags);
372 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
373 return 0;
374 }
375 portdata->outstanding_urbs++;
376 spin_unlock_irqrestore(&portdata->lock, flags);
377
378 buffer = kmalloc(count, GFP_ATOMIC);
379 if (!buffer) {
380 dev_err(&port->dev, "out of memory\n");
381 count = -ENOMEM;
382 goto error_no_buffer;
383 }
384
385 urb = usb_alloc_urb(0, GFP_ATOMIC);
386 if (!urb) {
387 dev_err(&port->dev, "no more free urbs\n");
388 count = -ENOMEM;
389 goto error_no_urb;
390 }
391
392 memcpy(buffer, buf, count);
393
394 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
395
396 usb_fill_bulk_urb(urb, serial->dev,
397 usb_sndbulkpipe(serial->dev,
398 port->bulk_out_endpointAddress),
399 buffer, count, sierra_outdat_callback, port);
400
401 /* send it down the pipe */
402 status = usb_submit_urb(urb, GFP_ATOMIC);
403 if (status) {
404 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
405 "with status = %d\n", __func__, status);
406 count = status;
407 goto error;
408 }
409
410 /* we are done with this urb, so let the host driver
411 * really free it when it is finished with it */
412 usb_free_urb(urb);
413
414 return count;
415 error:
416 usb_free_urb(urb);
417 error_no_urb:
418 kfree(buffer);
419 error_no_buffer:
420 spin_lock_irqsave(&portdata->lock, flags);
421 --portdata->outstanding_urbs;
422 spin_unlock_irqrestore(&portdata->lock, flags);
423 return count;
424 }
425
426 static void sierra_indat_callback(struct urb *urb)
427 {
428 int err;
429 int endpoint;
430 struct usb_serial_port *port;
431 struct tty_struct *tty;
432 unsigned char *data = urb->transfer_buffer;
433 int status = urb->status;
434
435 dbg("%s: %p", __func__, urb);
436
437 endpoint = usb_pipeendpoint(urb->pipe);
438 port = urb->context;
439
440 if (status) {
441 dev_dbg(&port->dev, "%s: nonzero status: %d on"
442 " endpoint %02x.", __func__, status, endpoint);
443 } else {
444 if (urb->actual_length) {
445 tty = tty_port_tty_get(&port->port);
446 tty_buffer_request_room(tty, urb->actual_length);
447 tty_insert_flip_string(tty, data, urb->actual_length);
448 tty_flip_buffer_push(tty);
449 tty_kref_put(tty);
450 } else
451 dev_dbg(&port->dev, "%s: empty read urb"
452 " received", __func__);
453
454 /* Resubmit urb so we continue receiving */
455 if (port->port.count && status != -ESHUTDOWN) {
456 err = usb_submit_urb(urb, GFP_ATOMIC);
457 if (err)
458 dev_err(&port->dev, "resubmit read urb failed."
459 "(%d)\n", err);
460 }
461 }
462 return;
463 }
464
465 static void sierra_instat_callback(struct urb *urb)
466 {
467 int err;
468 int status = urb->status;
469 struct usb_serial_port *port = urb->context;
470 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
471 struct usb_serial *serial = port->serial;
472
473 dev_dbg(&port->dev, "%s", __func__);
474 dev_dbg(&port->dev, "%s: urb %p port %p has data %p", __func__,
475 urb, port, portdata);
476
477 if (status == 0) {
478 struct usb_ctrlrequest *req_pkt =
479 (struct usb_ctrlrequest *)urb->transfer_buffer;
480
481 if (!req_pkt) {
482 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
483 __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 struct tty_struct *tty;
493
494 dev_dbg(&port->dev, "%s: signal x%x", __func__,
495 signals);
496
497 old_dcd_state = portdata->dcd_state;
498 portdata->cts_state = 1;
499 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
500 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
501 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
502
503 tty = tty_port_tty_get(&port->port);
504 if (tty && !C_CLOCAL(tty) &&
505 old_dcd_state && !portdata->dcd_state)
506 tty_hangup(tty);
507 tty_kref_put(tty);
508 } else {
509 dev_dbg(&port->dev, "%s: type %x req %x",
510 __func__, req_pkt->bRequestType,
511 req_pkt->bRequest);
512 }
513 } else
514 dev_dbg(&port->dev, "%s: error %d", __func__, status);
515
516 /* Resubmit urb so we continue receiving IRQ data */
517 if (status != -ESHUTDOWN) {
518 urb->dev = serial->dev;
519 err = usb_submit_urb(urb, GFP_ATOMIC);
520 if (err)
521 dev_dbg(&port->dev, "%s: resubmit intr urb "
522 "failed. (%d)", __func__, err);
523 }
524 }
525
526 static int sierra_write_room(struct tty_struct *tty)
527 {
528 struct usb_serial_port *port = tty->driver_data;
529 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
530 unsigned long flags;
531
532 dev_dbg(&port->dev, "%s - port %d", __func__, port->number);
533
534 /* try to give a good number back based on if we have any free urbs at
535 * this point in time */
536 spin_lock_irqsave(&portdata->lock, flags);
537 if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
538 spin_unlock_irqrestore(&portdata->lock, flags);
539 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
540 return 0;
541 }
542 spin_unlock_irqrestore(&portdata->lock, flags);
543
544 return 2048;
545 }
546
547 static int sierra_open(struct tty_struct *tty,
548 struct usb_serial_port *port, struct file *filp)
549 {
550 struct sierra_port_private *portdata;
551 struct usb_serial *serial = port->serial;
552 int i;
553 struct urb *urb;
554 int result;
555
556 portdata = usb_get_serial_port_data(port);
557
558 dev_dbg(&port->dev, "%s", __func__);
559
560 /* Set some sane defaults */
561 portdata->rts_state = 1;
562 portdata->dtr_state = 1;
563
564 /* Reset low level data toggle and start reading from endpoints */
565 for (i = 0; i < N_IN_URB; i++) {
566 urb = portdata->in_urbs[i];
567 if (!urb)
568 continue;
569 if (urb->dev != serial->dev) {
570 dev_dbg(&port->dev, "%s: dev %p != %p",
571 __func__, urb->dev, serial->dev);
572 continue;
573 }
574
575 /*
576 * make sure endpoint data toggle is synchronized with the
577 * device
578 */
579 usb_clear_halt(urb->dev, urb->pipe);
580
581 result = usb_submit_urb(urb, GFP_KERNEL);
582 if (result) {
583 dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
584 i, result, urb->transfer_buffer_length);
585 }
586 }
587
588 if (tty)
589 tty->low_latency = 1;
590
591 sierra_send_setup(tty, port);
592
593 /* start up the interrupt endpoint if we have one */
594 if (port->interrupt_in_urb) {
595 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
596 if (result)
597 dev_err(&port->dev, "submit irq_in urb failed %d\n",
598 result);
599 }
600 return 0;
601 }
602
603 static void sierra_close(struct tty_struct *tty,
604 struct usb_serial_port *port, struct file *filp)
605 {
606 int i;
607 struct usb_serial *serial = port->serial;
608 struct sierra_port_private *portdata;
609
610 dev_dbg(&port->dev, "%s", __func__);
611 portdata = usb_get_serial_port_data(port);
612
613 portdata->rts_state = 0;
614 portdata->dtr_state = 0;
615
616 if (serial->dev) {
617 mutex_lock(&serial->disc_mutex);
618 if (!serial->disconnected)
619 sierra_send_setup(tty, port);
620 mutex_unlock(&serial->disc_mutex);
621
622 /* Stop reading/writing urbs */
623 for (i = 0; i < N_IN_URB; i++)
624 usb_kill_urb(portdata->in_urbs[i]);
625 }
626
627 usb_kill_urb(port->interrupt_in_urb);
628 tty_port_tty_set(&port->port, NULL);
629 }
630
631 static int sierra_startup(struct usb_serial *serial)
632 {
633 struct usb_serial_port *port;
634 struct sierra_port_private *portdata;
635 struct urb *urb;
636 int i;
637 int j;
638
639 dev_dbg(&serial->dev->dev, "%s", __func__);
640
641 /* Set Device mode to D0 */
642 sierra_set_power_state(serial->dev, 0x0000);
643
644 /* Check NMEA and set */
645 if (nmea)
646 sierra_vsc_set_nmea(serial->dev, 1);
647
648 /* Now setup per port private data */
649 for (i = 0; i < serial->num_ports; i++) {
650 port = serial->port[i];
651 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
652 if (!portdata) {
653 dev_dbg(&port->dev, "%s: kmalloc for "
654 "sierra_port_private (%d) failed!.",
655 __func__, i);
656 return -ENOMEM;
657 }
658 spin_lock_init(&portdata->lock);
659 for (j = 0; j < N_IN_URB; j++) {
660 portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
661 if (!portdata->in_buffer[j]) {
662 for (--j; j >= 0; j--)
663 kfree(portdata->in_buffer[j]);
664 kfree(portdata);
665 return -ENOMEM;
666 }
667 }
668
669 usb_set_serial_port_data(port, portdata);
670
671 /* initialize the in urbs */
672 for (j = 0; j < N_IN_URB; ++j) {
673 urb = usb_alloc_urb(0, GFP_KERNEL);
674 if (urb == NULL) {
675 dev_dbg(&port->dev, "%s: alloc for in "
676 "port failed.", __func__);
677 continue;
678 }
679 /* Fill URB using supplied data. */
680 usb_fill_bulk_urb(urb, serial->dev,
681 usb_rcvbulkpipe(serial->dev,
682 port->bulk_in_endpointAddress),
683 portdata->in_buffer[j], IN_BUFLEN,
684 sierra_indat_callback, port);
685 portdata->in_urbs[j] = urb;
686 }
687 }
688
689 return 0;
690 }
691
692 static void sierra_shutdown(struct usb_serial *serial)
693 {
694 int i, j;
695 struct usb_serial_port *port;
696 struct sierra_port_private *portdata;
697
698 dev_dbg(&serial->dev->dev, "%s", __func__);
699
700 for (i = 0; i < serial->num_ports; ++i) {
701 port = serial->port[i];
702 if (!port)
703 continue;
704 portdata = usb_get_serial_port_data(port);
705 if (!portdata)
706 continue;
707
708 for (j = 0; j < N_IN_URB; j++) {
709 usb_kill_urb(portdata->in_urbs[j]);
710 usb_free_urb(portdata->in_urbs[j]);
711 kfree(portdata->in_buffer[j]);
712 }
713 kfree(portdata);
714 usb_set_serial_port_data(port, NULL);
715 }
716 }
717
718 static struct usb_serial_driver sierra_device = {
719 .driver = {
720 .owner = THIS_MODULE,
721 .name = "sierra",
722 },
723 .description = "Sierra USB modem",
724 .id_table = id_table,
725 .usb_driver = &sierra_driver,
726 .calc_num_ports = sierra_calc_num_ports,
727 .probe = sierra_probe,
728 .open = sierra_open,
729 .close = sierra_close,
730 .write = sierra_write,
731 .write_room = sierra_write_room,
732 .set_termios = sierra_set_termios,
733 .tiocmget = sierra_tiocmget,
734 .tiocmset = sierra_tiocmset,
735 .attach = sierra_startup,
736 .shutdown = sierra_shutdown,
737 .read_int_callback = sierra_instat_callback,
738 };
739
740 /* Functions used by new usb-serial code. */
741 static int __init sierra_init(void)
742 {
743 int retval;
744 retval = usb_serial_register(&sierra_device);
745 if (retval)
746 goto failed_device_register;
747
748
749 retval = usb_register(&sierra_driver);
750 if (retval)
751 goto failed_driver_register;
752
753 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
754 DRIVER_DESC "\n");
755
756 return 0;
757
758 failed_driver_register:
759 usb_serial_deregister(&sierra_device);
760 failed_device_register:
761 return retval;
762 }
763
764 static void __exit sierra_exit(void)
765 {
766 usb_deregister(&sierra_driver);
767 usb_serial_deregister(&sierra_device);
768 }
769
770 module_init(sierra_init);
771 module_exit(sierra_exit);
772
773 MODULE_AUTHOR(DRIVER_AUTHOR);
774 MODULE_DESCRIPTION(DRIVER_DESC);
775 MODULE_VERSION(DRIVER_VERSION);
776 MODULE_LICENSE("GPL");
777
778 module_param(nmea, bool, S_IRUGO | S_IWUSR);
779 MODULE_PARM_DESC(nmea, "NMEA streaming");
780
781 module_param(debug, bool, S_IRUGO | S_IWUSR);
782 MODULE_PARM_DESC(debug, "Debug messages");
Nao low-level kernelspace/userspace library that runs on our robots, Nao-Team HTWK