?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
USB: new quirks/IDs from upstream
[tomato.git] / release / src-rt / linux / linux-2.6 / drivers / usb / serial / sierra.c
blob29bb874c7f5e72883cd67820b70f6317d39f0159
1 /*
2 USB Driver for Sierra Wireless
3
4 Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>
5
6 Copyright (C) 2008, 2009 Elina Pasheva, Matthew Safar, Rory Filer
7 <linux@sierrawireless.com>
8
9 IMPORTANT DISCLAIMER: This driver is not commercially supported by
10 Sierra Wireless. Use at your own risk.
11
12 This driver is free software; you can redistribute it and/or modify
13 it under the terms of Version 2 of the GNU General Public License as
14 published by the Free Software Foundation.
15
16 Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
17 Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
18
19 Back ported to kernel 2.6.23
20 */
21 /* Uncomment to log function calls */
22 /*#define DEBUG*/
23 #define DRIVER_VERSION "v.1.7.0"
24 #define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer"
25 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
26
27 #include <linux/kernel.h>
28 #include <linux/jiffies.h>
29 #include <linux/errno.h>
30 #include <linux/tty.h>
31 #include <linux/tty_flip.h>
32 #include <linux/module.h>
33 #include <linux/usb.h>
34 #include <linux/usb/serial.h>
35
36 #define SWIMS_USB_REQUEST_SetPower 0x00
37 #define SWIMS_USB_REQUEST_SetNmea 0x07
38 #define SWIMS_USB_REQUEST_SetMode 0x0B
39 #define SWIMS_SET_MODE_Modem 0x0001
40
41 #define N_IN_URB 8
42 #define N_OUT_URB 64
43 #define IN_BUFLEN 4096
44
45 #define MAX_TRANSFER (PAGE_SIZE - 512)
46 /* MAX_TRANSFER is chosen so that the VM is not stressed by
47 allocations > PAGE_SIZE and the number of packets in a page
48 is an integer 512 is the largest possible packet on EHCI */
49
50 static int debug;
51 static int nmea;
52 static int truinstall = 1;
53 static int suspend_support;
54
55 enum devicetype {
56 DEVICE_MODEM = 0,
57 DEVICE_INSTALLER = 1,
58 };
59
60 /* list of interface numbers - used for constructing interface blacklists */
61 struct list {
62 const u32 listlen; /* number of interface numbers on list */
63 const u8 *list; /* pointer to the array holding the numbers */
64 };
65
66 /* static device type specific data */
67 struct sierra_device_static_info {
68 const enum devicetype dev_type;
69 const struct list iface_blacklist;
70 };
71
72 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
73 {
74 int result;
75 dev_dbg(&udev->dev, "%s\n", __func__);
76 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
77 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
78 USB_TYPE_VENDOR, /* __u8 request type */
79 swiState, /* __u16 value */
80 0, /* __u16 index */
81 NULL, /* void *data */
82 0, /* __u16 size */
83 USB_CTRL_SET_TIMEOUT); /* int timeout */
84 return result;
85 }
86
87 static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSWocMode)
88 {
89 int result;
90 dev_dbg(&udev->dev, "%s\n", "DEVICE MODE SWITCH");
91 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
92 SWIMS_USB_REQUEST_SetMode, /* __u8 request */
93 USB_TYPE_VENDOR, /* __u8 request type */
94 eSWocMode, /* __u16 value */
95 0x0000, /* __u16 index */
96 NULL, /* void *data */
97 0, /* __u16 size */
98 USB_CTRL_SET_TIMEOUT); /* int timeout */
99 return result;
100 }
101
102 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
103 {
104 int result;
105 dev_dbg(&udev->dev, "%s\n", __func__);
106 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
107 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
108 USB_TYPE_VENDOR, /* __u8 request type */
109 enable, /* __u16 value */
110 0x0000, /* __u16 index */
111 NULL, /* void *data */
112 0, /* __u16 size */
113 USB_CTRL_SET_TIMEOUT); /* int timeout */
114 return result;
115 }
116
117 static int sierra_calc_num_ports(struct usb_serial *serial)
118 {
119 int num_ports = 0;
120 u8 ifnum, numendpoints;
121
122 dev_dbg(&serial->dev->dev, "%s\n", __func__);
123
124 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
125 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
126
127 /* Dummy interface present on some SKUs should be ignored */
128 if (ifnum == 0x99)
129 num_ports = 0;
130 else if (numendpoints <= 3)
131 num_ports = 1;
132 else
133 num_ports = (numendpoints-1)/2;
134 return num_ports;
135 }
136
137 static int is_blacklisted(const u8 ifnum, const struct list *blacklist)
138 {
139 const u8 *list;
140 int i;
141
142 if (blacklist) {
143 list = blacklist->list;
144
145 for (i=0; i < blacklist->listlen; i++) {
146 if (list[i] == ifnum)
147 return 1;
148 }
149 }
150 return 0;
151 }
152
153 static int sierra_calc_interface(struct usb_serial *serial)
154 {
155 int interface;
156 struct usb_interface *p_interface;
157 struct usb_host_interface *p_host_interface;
158 dev_dbg(&serial->dev->dev, "%s\n", __func__);
159
160 /* Get the interface structure pointer from the serial struct */
161 p_interface = serial->interface;
162
163 /* Get a pointer to the host interface structure */
164 p_host_interface = p_interface->cur_altsetting;
165
166 /* read the interface descriptor for this active altsetting
167 * to find out the interface number we are on
168 */
169 interface = p_host_interface->desc.bInterfaceNumber;
170
171 return interface;
172 }
173
174 static int sierra_probe(struct usb_serial *serial,
175 const struct usb_device_id *id)
176 {
177 const struct sierra_device_static_info * info;
178 int result = 0;
179 struct usb_device *udev;
180 u8 ifnum, ifclass;
181
182 udev = serial->dev;
183 dev_dbg(&udev->dev, "%s\n", __func__);
184
185 /* Check TRU-Install first */
186 info = (const struct sierra_device_static_info *)id->driver_info;
187 ifclass = serial->interface->cur_altsetting->desc.bInterfaceClass;
188 if (ifclass == USB_CLASS_MASS_STORAGE) {
189 /* If TRU-Install support is enabled, force to modem mode */
190 if (truinstall && info && info->dev_type == DEVICE_INSTALLER) {
191 dev_dbg(&udev->dev, "%s\n", "FOUND TRU-INSTALL DEVICE");
192 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
193 }
194 return -ENODEV;
195 }
196
197 ifnum = sierra_calc_interface(serial);
198 if (info && is_blacklisted(ifnum, &info->iface_blacklist)) {
199 dev_dbg(&serial->dev->dev,
200 "Ignoring blacklisted interface #%d\n", ifnum);
201 return -ENODEV;
202 }
203
204 /*
205 * If this interface supports more than 1 alternate
206 * select the 2nd one
207 */
208 if (serial->interface->num_altsetting == 2) {
209 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
210 ifnum);
211 /* We know the alternate setting is 1 for the MC8785 */
212 usb_set_interface(udev, ifnum, 1);
213 }
214 /* Be careful here, The ifnum, ifclass etc. might be incorrect, because
215 * of the usb_set_interface call. (all obtained using
216 * serial->interface->cur_altsetting that was changed by that call)
217 */
218
219 return result;
220 }
221
222 static const struct sierra_device_static_info tru_inst_info = {
223 .dev_type = DEVICE_INSTALLER,
224 };
225
226 static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11 };
227 static const struct sierra_device_static_info direct_ip_interface_blacklist = {
228 .dev_type = DEVICE_MODEM,
229 .iface_blacklist = {
230 .listlen = ARRAY_SIZE( direct_ip_non_serial_ifaces ),
231 .list = direct_ip_non_serial_ifaces,
232 },
233 };
234
235 static struct usb_device_id id_table [] = {
236 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
237 { USB_DEVICE(0x03f0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */
238 { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */
239 { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */
240
241 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
242 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
243 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
244 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
245 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
246 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
247 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
248 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
249 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
250 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
251 { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U */
252 /* Sierra Wireless C597 */
253 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
254 /* Sierra Wireless Device */
255 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
256 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless Device */
257 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless Device */
258 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless Device */
259
260 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
261 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
262 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
263 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
264 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Lenovo) */
265 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
266 { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */
267 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
268 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
269 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
270 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
271 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
272 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
273 /* Sierra Wireless MC8790, MC8791, MC8792 Composite */
274 { USB_DEVICE(0x1199, 0x683C) },
275 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */
276 /* Sierra Wireless MC8790, MC8791, MC8792 */
277 { USB_DEVICE(0x1199, 0x683E) },
278 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
279 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
280 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
281 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
282 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
283 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
284 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
285 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
286 /* Sierra Wireless C885 */
287 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
288 /* Sierra Wireless Device */
289 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
290 /* Sierra Wireless Device */
291 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
292 /* Sierra Wireless Device */
293 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
294
295 { USB_DEVICE(0x1199, 0x0FFF),
296 .driver_info = (kernel_ulong_t)&tru_inst_info
297 },
298
299 { USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */
300 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
301 },
302 { USB_DEVICE(0x0f3d, 0x68A3), /* Airprime/Sierra Wireless Direct IP modems */
303 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
304 },
305 { USB_DEVICE(0x413C, 0x08133) }, /* Dell Computer Corp. Wireless 5720 VZW Mobile Broadband (EVDO Rev-A) Minicard GPS Port */
306
307 { }
308 };
309 MODULE_DEVICE_TABLE(usb, id_table);
310
311 /* per port private data */
312 struct sierra_port_private {
313 spinlock_t lock; /* lock the structure */
314 int outstanding_urbs; /* number of out urbs in flight */
315
316 /* Input endpoints and buffers for this port */
317 struct urb *in_urbs[N_IN_URB];
318
319 /* Settings for the port */
320 int rts_state; /* Handshaking pins (outputs) */
321 int dtr_state;
322 int cts_state; /* Handshaking pins (inputs) */
323 int dsr_state;
324 int dcd_state;
325 int ri_state;
326 };
327
328 static int sierra_send_setup(struct usb_serial_port *port)
329 {
330 struct usb_serial *serial = port->serial;
331 struct sierra_port_private *portdata;
332 __u16 interface = 0;
333
334 dev_dbg(&port->dev, "%s\n", __func__);
335
336 portdata = usb_get_serial_port_data(port);
337
338 if (port->tty) {
339
340 int val = 0;
341 if (portdata->dtr_state)
342 val |= 0x01;
343 if (portdata->rts_state)
344 val |= 0x02;
345
346 /* If composite device then properly report interface */
347 if (serial->num_ports == 1) {
348 interface = sierra_calc_interface(serial);
349 /* Control message is send only to interfaces with
350 * interrupt_in endpoints
351 */
352 if(port->interrupt_in_urb) {
353 /* send control message */
354 return usb_control_msg(serial->dev,
355 usb_rcvctrlpipe(serial->dev, 0),
356 0x22, 0x21, val, interface,
357 NULL, 0, USB_CTRL_SET_TIMEOUT);
358 }
359 }
360
361 /* Otherwise the need to do non-composite mapping */
362 else {
363 if (port->bulk_out_endpointAddress == 2)
364 interface = 0;
365 else if (port->bulk_out_endpointAddress == 4)
366 interface = 1;
367 else if (port->bulk_out_endpointAddress == 5)
368 interface = 2;
369
370 return usb_control_msg(serial->dev,
371 usb_rcvctrlpipe(serial->dev, 0),
372 0x22, 0x21, val, interface,
373 NULL, 0, USB_CTRL_SET_TIMEOUT);
374
375 }
376 }
377
378 return 0;
379 }
380
381 static void sierra_set_termios(struct usb_serial_port *port,
382 struct ktermios *old_termios)
383 {
384 dev_dbg(&port->dev, "%s\n", __func__);
385 tty_termios_copy_hw(port->tty->termios, old_termios);
386 sierra_send_setup(port);
387 }
388
389 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
390 {
391 unsigned int value;
392 struct sierra_port_private *portdata;
393
394 dev_dbg(&port->dev, "%s\n", __func__);
395 portdata = usb_get_serial_port_data(port);
396
397 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
398 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
399 ((portdata->cts_state) ? TIOCM_CTS : 0) |
400 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
401 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
402 ((portdata->ri_state) ? TIOCM_RNG : 0);
403
404 return value;
405 }
406
407 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
408 unsigned int set, unsigned int clear)
409 {
410 struct sierra_port_private *portdata;
411
412 portdata = usb_get_serial_port_data(port);
413
414 if (set & TIOCM_RTS)
415 portdata->rts_state = 1;
416 if (set & TIOCM_DTR)
417 portdata->dtr_state = 1;
418
419 if (clear & TIOCM_RTS)
420 portdata->rts_state = 0;
421 if (clear & TIOCM_DTR)
422 portdata->dtr_state = 0;
423 return sierra_send_setup(port);
424 }
425 static void sierra_release_urb(struct urb *urb)
426 {
427 struct usb_serial_port *port;
428 if (urb) {
429 port = urb->context;
430 dev_dbg(&port->dev, "%s: %p\n", __func__, urb);
431 if (urb->transfer_buffer)
432 kfree(urb->transfer_buffer);
433 usb_free_urb(urb);
434 }
435 }
436
437 static void sierra_outdat_callback(struct urb *urb)
438 {
439 struct usb_serial_port *port = urb->context;
440 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
441 int status = urb->status;
442 unsigned long flags;
443
444 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
445
446 /* free up the transfer buffer, as usb_free_urb() does not do this */
447 kfree(urb->transfer_buffer);
448
449 if (status)
450 dev_dbg(&port->dev, "%s - nonzero write bulk status "
451 "received: %d\n", __func__, status);
452
453 spin_lock_irqsave(&portdata->lock, flags);
454 --portdata->outstanding_urbs;
455 spin_unlock_irqrestore(&portdata->lock, flags);
456
457 usb_serial_port_softint(port);
458 }
459
460 /* Write */
461 static int sierra_write(struct usb_serial_port *port,
462 const unsigned char *buf, int count)
463 {
464 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
465 struct usb_serial *serial = port->serial;
466 unsigned long flags;
467 unsigned char *buffer;
468 struct urb *urb;
469 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
470 int retval = 0;
471
472 /* verify that we actually have some data to write */
473 if (count == 0)
474 return 0;
475
476 portdata = usb_get_serial_port_data(port);
477
478 dev_dbg(&port->dev, "%s: write (%d bytes)\n", __func__, writesize);
479
480 spin_lock_irqsave(&portdata->lock, flags);
481 if (portdata->outstanding_urbs > N_OUT_URB) {
482 spin_unlock_irqrestore(&portdata->lock, flags);
483 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
484 return 0;
485 }
486 portdata->outstanding_urbs++;
487 spin_unlock_irqrestore(&portdata->lock, flags);
488
489 buffer = kmalloc(writesize, GFP_ATOMIC);
490 if (!buffer) {
491 dev_err(&port->dev, "out of memory\n");
492 retval = -ENOMEM;
493 goto error_no_buffer;
494 }
495
496 urb = usb_alloc_urb(0, GFP_ATOMIC);
497 if (!urb) {
498 dev_err(&port->dev, "no more free urbs\n");
499 retval = -ENOMEM;
500 goto error_no_urb;
501 }
502
503 memcpy(buffer, buf, writesize);
504
505 usb_serial_debug_data(debug, &port->dev, __func__, writesize, buffer);
506
507 usb_fill_bulk_urb(urb, serial->dev,
508 usb_sndbulkpipe(serial->dev,
509 port->bulk_out_endpointAddress),
510 buffer, writesize, sierra_outdat_callback, port);
511
512 /* Handle the need to send a zero length packet */
513 urb->transfer_flags |= URB_ZERO_PACKET;
514
515 /* send it down the pipe */
516 retval = usb_submit_urb(urb, GFP_ATOMIC);
517 if (retval) {
518 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
519 "with status = %d\n", __func__, retval);
520 goto error;
521 }
522
523 /* we are done with this urb, so let the host driver
524 * really free it when it is finished with it */
525 usb_free_urb(urb);
526
527 return writesize;
528 error:
529 usb_free_urb(urb);
530 error_no_urb:
531 kfree(buffer);
532 error_no_buffer:
533 spin_lock_irqsave(&portdata->lock, flags);
534 --portdata->outstanding_urbs;
535 spin_unlock_irqrestore(&portdata->lock, flags);
536 return retval;
537 }
538
539 static void sierra_indat_callback(struct urb *urb)
540 {
541 int err;
542 int endpoint;
543 struct usb_serial_port *port;
544 struct tty_struct *tty;
545 unsigned char *data = urb->transfer_buffer;
546 int status = urb->status;
547
548 endpoint = usb_pipeendpoint(urb->pipe);
549 port = urb->context;
550
551 dev_dbg(&port->dev, "%s: %p\n", __func__, urb);
552
553 if (status) {
554 dev_dbg(&port->dev, "%s: nonzero status: %d on"
555 " endpoint %02x\n", __func__, status, endpoint);
556 } else {
557 tty = port->tty;
558 if (urb->actual_length) {
559 tty_buffer_request_room(tty, urb->actual_length);
560 tty_insert_flip_string(tty, data, urb->actual_length);
561 tty_flip_buffer_push(tty);
562 usb_serial_debug_data(debug, &port->dev, __func__,
563 urb->actual_length, data);
564 } else {
565 dev_dbg(&port->dev, "%s: empty read urb"
566 " received\n", __func__);
567 }
568 }
569
570 /* Resubmit urb so we continue receiving */
571 if (port->open_count && status != -ESHUTDOWN && status != -ENOENT) {
572 err = usb_submit_urb(urb, GFP_ATOMIC);
573 if (err)
574 dev_err(&port->dev, "resubmit read urb failed."
575 "(%d)\n", err);
576 }
577
578 return;
579 }
580
581 static void sierra_instat_callback(struct urb *urb)
582 {
583 int err;
584 int status = urb->status;
585 struct usb_serial_port *port = urb->context;
586 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
587 struct usb_serial *serial = port->serial;
588
589 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
590 urb, port, portdata);
591
592 if (status == 0) {
593 struct usb_ctrlrequest *req_pkt =
594 (struct usb_ctrlrequest *)urb->transfer_buffer;
595
596 if (!req_pkt) {
597 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
598 __func__);
599 return;
600 }
601 if ((req_pkt->bRequestType == 0xA1) &&
602 (req_pkt->bRequest == 0x20)) {
603 int old_dcd_state;
604 unsigned char signals = *((unsigned char *)
605 urb->transfer_buffer +
606 sizeof(struct usb_ctrlrequest));
607
608 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
609 signals);
610
611 old_dcd_state = portdata->dcd_state;
612 portdata->cts_state = 1;
613 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
614 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
615 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
616
617 if (port->tty && !C_CLOCAL(port->tty) &&
618 old_dcd_state && !portdata->dcd_state)
619 tty_hangup(port->tty);
620 } else {
621 dev_dbg(&port->dev, "%s: type %x req %x\n",
622 __func__, req_pkt->bRequestType,
623 req_pkt->bRequest);
624 }
625 } else
626 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
627
628 /* Resubmit urb so we continue receiving IRQ data */
629 if (port->open_count && status != -ESHUTDOWN && status != -ENOENT) {
630 urb->dev = serial->dev;
631 err = usb_submit_urb(urb, GFP_ATOMIC);
632 if (err)
633 dev_err(&port->dev, "%s: resubmit intr urb "
634 "failed. (%d)\n", __func__, err);
635 }
636 }
637
638 static int sierra_write_room(struct usb_serial_port *port)
639 {
640 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
641 unsigned long flags;
642
643 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
644
645 /* try to give a good number back based on if we have any free urbs at
646 * this point in time */
647 spin_lock_irqsave(&portdata->lock, flags);
648 if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
649 spin_unlock_irqrestore(&portdata->lock, flags);
650 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
651 return 0;
652 }
653 spin_unlock_irqrestore(&portdata->lock, flags);
654
655 return 2048;
656 }
657
658 static void sierra_stop_rx_urbs(struct usb_serial_port *port)
659 {
660 int i;
661 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
662
663 for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) {
664 usb_kill_urb(portdata->in_urbs[i]);
665 }
666 usb_kill_urb(port->interrupt_in_urb);
667 }
668
669 static int sierra_submit_rx_urbs(struct usb_serial_port *port)
670 {
671 int ok_cnt;
672 int err = -EINVAL;
673 int i;
674 struct urb * urb;
675 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
676
677 ok_cnt = 0;
678 for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) {
679 urb = portdata->in_urbs[i];
680 if (!urb)
681 continue;
682 err = usb_submit_urb(urb, GFP_KERNEL);
683 if (err) {
684 dev_err(&port->dev, "%s: submit urb failed: %d\n",
685 __func__, err );
686 } else {
687 ok_cnt ++;
688 }
689 }
690
691 if (ok_cnt && port->interrupt_in_urb) {
692 err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
693 if (err) {
694 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
695 __func__, err );
696 }
697 }
698
699 if (ok_cnt > 0) /* at least one rx urb submitted */
700 return 0;
701 else
702 return err;
703 }
704
705 static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
706 int dir, void *ctx, int len,
707 usb_complete_t callback)
708 {
709 struct urb *urb;
710 u8 *buf;
711
712 if (endpoint == -1)
713 return NULL;
714
715 urb = usb_alloc_urb( 0, GFP_KERNEL );
716 if (urb == NULL) {
717 dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n",
718 __func__, endpoint);
719 return NULL;
720 }
721
722 buf = kmalloc(len, GFP_KERNEL);
723 if (buf)
724 {
725 /* Fill URB using supplied data */
726 usb_fill_bulk_urb(urb, serial->dev,
727 usb_sndbulkpipe(serial->dev, endpoint) | dir,
728 buf, len, callback, ctx);
729
730 /* debug */
731 dev_dbg(&serial->dev->dev,"%s %c u:%p d:%p\n", __func__,
732 dir == USB_DIR_IN?'i':'o', urb, buf );
733 } else {
734 dev_dbg(&serial->dev->dev,"%s %c u:%p d:%p\n", __func__,
735 dir == USB_DIR_IN?'i':'o', urb, buf );
736
737 sierra_release_urb(urb);
738 urb = NULL;
739 }
740
741 return urb;
742 }
743
744 static void sierra_close(struct usb_serial_port *port, struct file *filp)
745 {
746 int i;
747 struct usb_serial *serial = port->serial;
748 struct sierra_port_private *portdata;
749
750 dev_dbg(&port->dev, "%s\n", __func__);
751 portdata = usb_get_serial_port_data(port);
752
753 portdata->rts_state = 0;
754 portdata->dtr_state = 0;
755
756 if (serial->dev) {
757 mutex_lock(&serial->disc_mutex);
758 if (!serial->disconnected)
759 sierra_send_setup(port);
760 mutex_unlock(&serial->disc_mutex);
761
762 /* Stop reading urbs */
763 sierra_stop_rx_urbs(port);
764 /* .. and release them */
765 for (i = 0; i < N_IN_URB; i++) {
766 sierra_release_urb(portdata->in_urbs[i]);
767 portdata->in_urbs[i] = NULL;
768 }
769 }
770
771 port->tty = NULL;
772 }
773
774 static int sierra_open(struct usb_serial_port *port, struct file *filp)
775 {
776 struct sierra_port_private *portdata;
777 struct usb_serial *serial = port->serial;
778 int i;
779 int err;
780 int endpoint;
781 struct urb *urb;
782
783 portdata = usb_get_serial_port_data(port);
784
785 dev_dbg(&port->dev, "%s\n", __func__);
786
787 /* Set some sane defaults */
788 portdata->rts_state = 1;
789 portdata->dtr_state = 1;
790
791
792 spin_lock_init(&portdata->lock);
793
794 endpoint = port->bulk_in_endpointAddress;
795
796 for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) {
797 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
798 IN_BUFLEN, sierra_indat_callback);
799 portdata->in_urbs[i] = urb;
800 }
801 /* clear halt condition */
802 usb_clear_halt(serial->dev,
803 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
804
805 err = sierra_submit_rx_urbs(port);
806 if (err) {
807 /* get rid of everything as in close */
808 sierra_close(port, filp);
809 return err;
810 }
811 sierra_send_setup(port);
812
813 return 0;
814 }
815
816 static int sierra_startup(struct usb_serial *serial)
817 {
818 struct usb_serial_port *port;
819 struct sierra_port_private *portdata;
820 int i;
821
822 dev_dbg(&serial->dev->dev, "%s\n", __func__);
823
824 /* Set Device mode to D0 */
825 sierra_set_power_state(serial->dev, 0x0000);
826
827 /* Check NMEA and set */
828 if (nmea)
829 sierra_vsc_set_nmea(serial->dev, 1);
830
831 /* Now setup per port private data */
832 for (i = 0; i < serial->num_ports; i++) {
833 port = serial->port[i];
834 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
835 if (!portdata) {
836 dev_dbg(&port->dev, "%s: kmalloc for "
837 "sierra_port_private (%d) failed!\n",
838 __func__, i);
839 return -ENOMEM;
840 }
841 /* Set the port private data pointer */
842 usb_set_serial_port_data(port, portdata);
843 }
844
845 return 0;
846 }
847
848 static void sierra_shutdown(struct usb_serial *serial)
849 {
850 int i;
851 struct usb_serial_port *port;
852 struct sierra_port_private *portdata;
853
854 dev_dbg(&serial->dev->dev, "%s\n", __func__);
855
856 for (i = 0; i < serial->num_ports; ++i) {
857 port = serial->port[i];
858 if (!port)
859 continue;
860 portdata = usb_get_serial_port_data(port);
861 if (!portdata)
862 continue;
863 kfree(portdata);
864 usb_set_serial_port_data(port, NULL);
865 }
866 }
867
868 int sierra_suspend(struct usb_serial *serial, pm_message_t message)
869 {
870 int i;
871
872 dev_dbg(&serial->dev->dev, "%s\n", __func__);
873
874 /* The dummy interface doesn't prevent suspended state */
875 if (serial->num_ports == 0)
876 return 0;
877
878 if (!suspend_support)
879 return -EOPNOTSUPP;
880
881 for (i=0; i < serial->num_ports ; i++) {
882 sierra_stop_rx_urbs(serial->port[i]);
883 }
884 return 0;
885 }
886
887 int sierra_resume(struct usb_serial *serial)
888 {
889 int i;
890
891 dev_dbg(&serial->dev->dev, "%s\n", __func__);
892
893 for (i=0; i < serial->num_ports ; i++) {
894 sierra_submit_rx_urbs(serial->port[i]);
895 }
896
897 return 0;
898 }
899
900 static struct usb_driver sierra_driver = {
901 .name = "sierra",
902 .probe = usb_serial_probe,
903 .disconnect = usb_serial_disconnect,
904 .suspend = usb_serial_suspend,
905 .resume = usb_serial_resume,
906 .id_table = id_table,
907
908 .no_dynamic_id = 1,
909 .supports_autosuspend = 1,
910 };
911
912 static struct usb_serial_driver sierra_device = {
913 .driver = {
914 .owner = THIS_MODULE,
915 .name = "sierra",
916 },
917 .description = "Sierra USB modem",
918 .id_table = id_table,
919 .usb_driver = &sierra_driver,
920 .num_interrupt_in = NUM_DONT_CARE,
921 .num_bulk_in = NUM_DONT_CARE,
922 .num_bulk_out = NUM_DONT_CARE,
923 .calc_num_ports = sierra_calc_num_ports,
924 .probe = sierra_probe,
925 .open = sierra_open,
926 .close = sierra_close,
927 .write = sierra_write,
928 .write_room = sierra_write_room,
929 .set_termios = sierra_set_termios,
930 .tiocmget = sierra_tiocmget,
931 .tiocmset = sierra_tiocmset,
932 .attach = sierra_startup,
933 .shutdown = sierra_shutdown,
934 .read_int_callback = sierra_instat_callback,
935 .suspend = sierra_suspend,
936 .resume = sierra_resume,
937 };
938
939 /* Functions used by new usb-serial code. */
940 static int __init sierra_init(void)
941 {
942 int retval;
943 retval = usb_serial_register(&sierra_device);
944 if (retval)
945 goto failed_device_register;
946
947
948 retval = usb_register(&sierra_driver);
949 if (retval)
950 goto failed_driver_register;
951
952 info(DRIVER_DESC ": " DRIVER_VERSION);
953
954 return 0;
955
956 failed_driver_register:
957 usb_serial_deregister(&sierra_device);
958 failed_device_register:
959 return retval;
960 }
961
962 static void __exit sierra_exit(void)
963 {
964 usb_deregister(&sierra_driver);
965 usb_serial_deregister(&sierra_device);
966 }
967
968 module_init(sierra_init);
969 module_exit(sierra_exit);
970
971 MODULE_AUTHOR(DRIVER_AUTHOR);
972 MODULE_DESCRIPTION(DRIVER_DESC);
973 MODULE_VERSION(DRIVER_VERSION);
974 MODULE_LICENSE("GPL");
975
976 module_param(truinstall, bool, S_IRUGO | S_IWUSR);
977 MODULE_PARM_DESC(truinstall, "TRU-Install support");
978
979 module_param(nmea, bool, S_IRUGO | S_IWUSR);
980 MODULE_PARM_DESC(nmea, "NMEA streaming");
981
982 module_param(debug, bool, S_IRUGO | S_IWUSR);
983 MODULE_PARM_DESC(debug, "Debug messages");
984
985 module_param(suspend_support, bool, S_IRUGO | S_IWUSR);
986 MODULE_PARM_DESC(suspend_support, "Selective Suspend support");
Tomato firmware and modifications.