sierra.c revision 4a90f09b20f4622dcbff1f0e1e6bae1704f8ad8c
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 39static int debug; 40static int nmea; 41 42static 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 57static 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 72static 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 88static 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 109static 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 159static 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}; 216MODULE_DEVICE_TABLE(usb, id_table); 217 218static 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 226struct 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 243static 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 dbg("%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 284static void sierra_set_termios(struct tty_struct *tty, 285 struct usb_serial_port *port, struct ktermios *old_termios) 286{ 287 dbg("%s", __func__); 288 tty_termios_copy_hw(tty->termios, old_termios); 289 sierra_send_setup(tty, port); 290} 291 292static 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 portdata = usb_get_serial_port_data(port); 299 300 value = ((portdata->rts_state) ? TIOCM_RTS : 0) | 301 ((portdata->dtr_state) ? TIOCM_DTR : 0) | 302 ((portdata->cts_state) ? TIOCM_CTS : 0) | 303 ((portdata->dsr_state) ? TIOCM_DSR : 0) | 304 ((portdata->dcd_state) ? TIOCM_CAR : 0) | 305 ((portdata->ri_state) ? TIOCM_RNG : 0); 306 307 return value; 308} 309 310static int sierra_tiocmset(struct tty_struct *tty, struct file *file, 311 unsigned int set, unsigned int clear) 312{ 313 struct usb_serial_port *port = tty->driver_data; 314 struct sierra_port_private *portdata; 315 316 portdata = usb_get_serial_port_data(port); 317 318 if (set & TIOCM_RTS) 319 portdata->rts_state = 1; 320 if (set & TIOCM_DTR) 321 portdata->dtr_state = 1; 322 323 if (clear & TIOCM_RTS) 324 portdata->rts_state = 0; 325 if (clear & TIOCM_DTR) 326 portdata->dtr_state = 0; 327 return sierra_send_setup(tty, port); 328} 329 330static void sierra_outdat_callback(struct urb *urb) 331{ 332 struct usb_serial_port *port = urb->context; 333 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 334 int status = urb->status; 335 unsigned long flags; 336 337 dbg("%s - port %d", __func__, port->number); 338 339 /* free up the transfer buffer, as usb_free_urb() does not do this */ 340 kfree(urb->transfer_buffer); 341 342 if (status) 343 dbg("%s - nonzero write bulk status received: %d", 344 __func__, status); 345 346 spin_lock_irqsave(&portdata->lock, flags); 347 --portdata->outstanding_urbs; 348 spin_unlock_irqrestore(&portdata->lock, flags); 349 350 usb_serial_port_softint(port); 351} 352 353/* Write */ 354static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port, 355 const unsigned char *buf, int count) 356{ 357 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 358 struct usb_serial *serial = port->serial; 359 unsigned long flags; 360 unsigned char *buffer; 361 struct urb *urb; 362 int status; 363 364 portdata = usb_get_serial_port_data(port); 365 366 dbg("%s: write (%d chars)", __func__, count); 367 368 spin_lock_irqsave(&portdata->lock, flags); 369 if (portdata->outstanding_urbs > N_OUT_URB) { 370 spin_unlock_irqrestore(&portdata->lock, flags); 371 dbg("%s - write limit hit\n", __func__); 372 return 0; 373 } 374 portdata->outstanding_urbs++; 375 spin_unlock_irqrestore(&portdata->lock, flags); 376 377 buffer = kmalloc(count, GFP_ATOMIC); 378 if (!buffer) { 379 dev_err(&port->dev, "out of memory\n"); 380 count = -ENOMEM; 381 goto error_no_buffer; 382 } 383 384 urb = usb_alloc_urb(0, GFP_ATOMIC); 385 if (!urb) { 386 dev_err(&port->dev, "no more free urbs\n"); 387 count = -ENOMEM; 388 goto error_no_urb; 389 } 390 391 memcpy(buffer, buf, count); 392 393 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); 394 395 usb_fill_bulk_urb(urb, serial->dev, 396 usb_sndbulkpipe(serial->dev, 397 port->bulk_out_endpointAddress), 398 buffer, count, sierra_outdat_callback, port); 399 400 /* send it down the pipe */ 401 status = usb_submit_urb(urb, GFP_ATOMIC); 402 if (status) { 403 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " 404 "with status = %d\n", __func__, status); 405 count = status; 406 goto error; 407 } 408 409 /* we are done with this urb, so let the host driver 410 * really free it when it is finished with it */ 411 usb_free_urb(urb); 412 413 return count; 414error: 415 usb_free_urb(urb); 416error_no_urb: 417 kfree(buffer); 418error_no_buffer: 419 spin_lock_irqsave(&portdata->lock, flags); 420 --portdata->outstanding_urbs; 421 spin_unlock_irqrestore(&portdata->lock, flags); 422 return count; 423} 424 425static void sierra_indat_callback(struct urb *urb) 426{ 427 int err; 428 int endpoint; 429 struct usb_serial_port *port; 430 struct tty_struct *tty; 431 unsigned char *data = urb->transfer_buffer; 432 int status = urb->status; 433 434 dbg("%s: %p", __func__, urb); 435 436 endpoint = usb_pipeendpoint(urb->pipe); 437 port = urb->context; 438 439 if (status) { 440 dbg("%s: nonzero status: %d on endpoint %02x.", 441 __func__, status, endpoint); 442 } else { 443 if (urb->actual_length) { 444 tty = tty_port_tty_get(&port->port); 445 tty_buffer_request_room(tty, urb->actual_length); 446 tty_insert_flip_string(tty, data, urb->actual_length); 447 tty_flip_buffer_push(tty); 448 tty_kref_put(tty); 449 } else 450 dbg("%s: empty read urb received", __func__); 451 452 /* Resubmit urb so we continue receiving */ 453 if (port->port.count && status != -ESHUTDOWN) { 454 err = usb_submit_urb(urb, GFP_ATOMIC); 455 if (err) 456 dev_err(&port->dev, "resubmit read urb failed." 457 "(%d)\n", err); 458 } 459 } 460 return; 461} 462 463static void sierra_instat_callback(struct urb *urb) 464{ 465 int err; 466 int status = urb->status; 467 struct usb_serial_port *port = urb->context; 468 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 469 struct usb_serial *serial = port->serial; 470 471 dbg("%s", __func__); 472 dbg("%s: urb %p port %p has data %p", __func__, urb, port, portdata); 473 474 if (status == 0) { 475 struct usb_ctrlrequest *req_pkt = 476 (struct usb_ctrlrequest *)urb->transfer_buffer; 477 478 if (!req_pkt) { 479 dbg("%s: NULL req_pkt\n", __func__); 480 return; 481 } 482 if ((req_pkt->bRequestType == 0xA1) && 483 (req_pkt->bRequest == 0x20)) { 484 int old_dcd_state; 485 unsigned char signals = *((unsigned char *) 486 urb->transfer_buffer + 487 sizeof(struct usb_ctrlrequest)); 488 struct tty_struct *tty; 489 490 dbg("%s: signal x%x", __func__, signals); 491 492 old_dcd_state = portdata->dcd_state; 493 portdata->cts_state = 1; 494 portdata->dcd_state = ((signals & 0x01) ? 1 : 0); 495 portdata->dsr_state = ((signals & 0x02) ? 1 : 0); 496 portdata->ri_state = ((signals & 0x08) ? 1 : 0); 497 498 tty = tty_port_tty_get(&port->port); 499 if (tty && !C_CLOCAL(tty) && 500 old_dcd_state && !portdata->dcd_state) 501 tty_hangup(tty); 502 tty_kref_put(tty); 503 } else { 504 dbg("%s: type %x req %x", __func__, 505 req_pkt->bRequestType, req_pkt->bRequest); 506 } 507 } else 508 dbg("%s: error %d", __func__, status); 509 510 /* Resubmit urb so we continue receiving IRQ data */ 511 if (status != -ESHUTDOWN) { 512 urb->dev = serial->dev; 513 err = usb_submit_urb(urb, GFP_ATOMIC); 514 if (err) 515 dbg("%s: resubmit intr urb failed. (%d)", 516 __func__, err); 517 } 518} 519 520static int sierra_write_room(struct tty_struct *tty) 521{ 522 struct usb_serial_port *port = tty->driver_data; 523 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 524 unsigned long flags; 525 526 dbg("%s - port %d", __func__, port->number); 527 528 /* try to give a good number back based on if we have any free urbs at 529 * this point in time */ 530 spin_lock_irqsave(&portdata->lock, flags); 531 if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) { 532 spin_unlock_irqrestore(&portdata->lock, flags); 533 dbg("%s - write limit hit\n", __func__); 534 return 0; 535 } 536 spin_unlock_irqrestore(&portdata->lock, flags); 537 538 return 2048; 539} 540 541static int sierra_open(struct tty_struct *tty, 542 struct usb_serial_port *port, struct file *filp) 543{ 544 struct sierra_port_private *portdata; 545 struct usb_serial *serial = port->serial; 546 int i; 547 struct urb *urb; 548 int result; 549 550 portdata = usb_get_serial_port_data(port); 551 552 dbg("%s", __func__); 553 554 /* Set some sane defaults */ 555 portdata->rts_state = 1; 556 portdata->dtr_state = 1; 557 558 /* Reset low level data toggle and start reading from endpoints */ 559 for (i = 0; i < N_IN_URB; i++) { 560 urb = portdata->in_urbs[i]; 561 if (!urb) 562 continue; 563 if (urb->dev != serial->dev) { 564 dbg("%s: dev %p != %p", __func__, 565 urb->dev, serial->dev); 566 continue; 567 } 568 569 /* 570 * make sure endpoint data toggle is synchronized with the 571 * device 572 */ 573 usb_clear_halt(urb->dev, urb->pipe); 574 575 result = usb_submit_urb(urb, GFP_KERNEL); 576 if (result) { 577 dev_err(&port->dev, "submit urb %d failed (%d) %d\n", 578 i, result, urb->transfer_buffer_length); 579 } 580 } 581 582 if (tty) 583 tty->low_latency = 1; 584 585 sierra_send_setup(tty, port); 586 587 /* start up the interrupt endpoint if we have one */ 588 if (port->interrupt_in_urb) { 589 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); 590 if (result) 591 dev_err(&port->dev, "submit irq_in urb failed %d\n", 592 result); 593 } 594 return 0; 595} 596 597static void sierra_close(struct tty_struct *tty, 598 struct usb_serial_port *port, struct file *filp) 599{ 600 int i; 601 struct usb_serial *serial = port->serial; 602 struct sierra_port_private *portdata; 603 604 dbg("%s", __func__); 605 portdata = usb_get_serial_port_data(port); 606 607 portdata->rts_state = 0; 608 portdata->dtr_state = 0; 609 610 if (serial->dev) { 611 mutex_lock(&serial->disc_mutex); 612 if (!serial->disconnected) 613 sierra_send_setup(tty, port); 614 mutex_unlock(&serial->disc_mutex); 615 616 /* Stop reading/writing urbs */ 617 for (i = 0; i < N_IN_URB; i++) 618 usb_kill_urb(portdata->in_urbs[i]); 619 } 620 621 usb_kill_urb(port->interrupt_in_urb); 622 tty_port_tty_set(&port->port, NULL); 623} 624 625static int sierra_startup(struct usb_serial *serial) 626{ 627 struct usb_serial_port *port; 628 struct sierra_port_private *portdata; 629 struct urb *urb; 630 int i; 631 int j; 632 633 dbg("%s", __func__); 634 635 /* Set Device mode to D0 */ 636 sierra_set_power_state(serial->dev, 0x0000); 637 638 /* Check NMEA and set */ 639 if (nmea) 640 sierra_vsc_set_nmea(serial->dev, 1); 641 642 /* Now setup per port private data */ 643 for (i = 0; i < serial->num_ports; i++) { 644 port = serial->port[i]; 645 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); 646 if (!portdata) { 647 dbg("%s: kmalloc for sierra_port_private (%d) failed!.", 648 __func__, i); 649 return -ENOMEM; 650 } 651 spin_lock_init(&portdata->lock); 652 for (j = 0; j < N_IN_URB; j++) { 653 portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL); 654 if (!portdata->in_buffer[j]) { 655 for (--j; j >= 0; j--) 656 kfree(portdata->in_buffer[j]); 657 kfree(portdata); 658 return -ENOMEM; 659 } 660 } 661 662 usb_set_serial_port_data(port, portdata); 663 664 /* initialize the in urbs */ 665 for (j = 0; j < N_IN_URB; ++j) { 666 urb = usb_alloc_urb(0, GFP_KERNEL); 667 if (urb == NULL) { 668 dbg("%s: alloc for in port failed.", 669 __func__); 670 continue; 671 } 672 /* Fill URB using supplied data. */ 673 usb_fill_bulk_urb(urb, serial->dev, 674 usb_rcvbulkpipe(serial->dev, 675 port->bulk_in_endpointAddress), 676 portdata->in_buffer[j], IN_BUFLEN, 677 sierra_indat_callback, port); 678 portdata->in_urbs[j] = urb; 679 } 680 } 681 682 return 0; 683} 684 685static void sierra_shutdown(struct usb_serial *serial) 686{ 687 int i, j; 688 struct usb_serial_port *port; 689 struct sierra_port_private *portdata; 690 691 dbg("%s", __func__); 692 693 for (i = 0; i < serial->num_ports; ++i) { 694 port = serial->port[i]; 695 if (!port) 696 continue; 697 portdata = usb_get_serial_port_data(port); 698 if (!portdata) 699 continue; 700 701 for (j = 0; j < N_IN_URB; j++) { 702 usb_kill_urb(portdata->in_urbs[j]); 703 usb_free_urb(portdata->in_urbs[j]); 704 kfree(portdata->in_buffer[j]); 705 } 706 kfree(portdata); 707 usb_set_serial_port_data(port, NULL); 708 } 709} 710 711static struct usb_serial_driver sierra_device = { 712 .driver = { 713 .owner = THIS_MODULE, 714 .name = "sierra", 715 }, 716 .description = "Sierra USB modem", 717 .id_table = id_table, 718 .usb_driver = &sierra_driver, 719 .calc_num_ports = sierra_calc_num_ports, 720 .probe = sierra_probe, 721 .open = sierra_open, 722 .close = sierra_close, 723 .write = sierra_write, 724 .write_room = sierra_write_room, 725 .set_termios = sierra_set_termios, 726 .tiocmget = sierra_tiocmget, 727 .tiocmset = sierra_tiocmset, 728 .attach = sierra_startup, 729 .shutdown = sierra_shutdown, 730 .read_int_callback = sierra_instat_callback, 731}; 732 733/* Functions used by new usb-serial code. */ 734static int __init sierra_init(void) 735{ 736 int retval; 737 retval = usb_serial_register(&sierra_device); 738 if (retval) 739 goto failed_device_register; 740 741 742 retval = usb_register(&sierra_driver); 743 if (retval) 744 goto failed_driver_register; 745 746 info(DRIVER_DESC ": " DRIVER_VERSION); 747 748 return 0; 749 750failed_driver_register: 751 usb_serial_deregister(&sierra_device); 752failed_device_register: 753 return retval; 754} 755 756static void __exit sierra_exit(void) 757{ 758 usb_deregister(&sierra_driver); 759 usb_serial_deregister(&sierra_device); 760} 761 762module_init(sierra_init); 763module_exit(sierra_exit); 764 765MODULE_AUTHOR(DRIVER_AUTHOR); 766MODULE_DESCRIPTION(DRIVER_DESC); 767MODULE_VERSION(DRIVER_VERSION); 768MODULE_LICENSE("GPL"); 769 770module_param(nmea, bool, S_IRUGO | S_IWUSR); 771MODULE_PARM_DESC(nmea, "NMEA streaming"); 772 773module_param(debug, bool, S_IRUGO | S_IWUSR); 774MODULE_PARM_DESC(debug, "Debug messages"); 775