2 USB Driver for Sierra Wireless
4 Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>
6 IMPORTANT DISCLAIMER: This driver is not commercially supported by
7 Sierra Wireless. Use at your own risk.
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.
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>
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"
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>
31 #define SWIMS_USB_REQUEST_SetPower 0x00
32 #define SWIMS_USB_REQUEST_SetNmea 0x07
34 /* per port private data */
37 #define IN_BUFLEN 4096
42 static int sierra_set_power_state(struct usb_device
*udev
, __u16 swiState
)
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 */
51 NULL
, /* void *data */
53 USB_CTRL_SET_TIMEOUT
); /* int timeout */
57 static int sierra_vsc_set_nmea(struct usb_device
*udev
, __u16 enable
)
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 */
68 USB_CTRL_SET_TIMEOUT
); /* int timeout */
72 static int sierra_calc_num_ports(struct usb_serial
*serial
)
75 int *num_ports
= usb_get_serial_data(serial
);
76 dev_dbg(&serial
->dev
->dev
, "%s", __func__
);
82 usb_set_serial_data(serial
, NULL
);
88 static int sierra_calc_interface(struct usb_serial
*serial
)
91 struct usb_interface
*p_interface
;
92 struct usb_host_interface
*p_host_interface
;
93 dev_dbg(&serial
->dev
->dev
, "%s", __func__
);
95 /* Get the interface structure pointer from the serial struct */
96 p_interface
= serial
->interface
;
98 /* Get a pointer to the host interface structure */
99 p_host_interface
= p_interface
->cur_altsetting
;
101 /* read the interface descriptor for this active altsetting
102 * to find out the interface number we are on
104 interface
= p_host_interface
->desc
.bInterfaceNumber
;
109 static int sierra_probe(struct usb_serial
*serial
,
110 const struct usb_device_id
*id
)
113 struct usb_device
*udev
;
118 dev_dbg(&serial
->dev
->dev
, "%s", __func__
);
120 num_ports
= kmalloc(sizeof(*num_ports
), GFP_KERNEL
);
124 ifnum
= serial
->interface
->cur_altsetting
->desc
.bInterfaceNumber
;
125 numendpoints
= serial
->interface
->cur_altsetting
->desc
.bNumEndpoints
;
128 /* Figure out the interface number from the serial structure */
129 ifnum
= sierra_calc_interface(serial
);
132 * If this interface supports more than 1 alternate
135 if (serial
->interface
->num_altsetting
== 2) {
136 dev_dbg(&udev
->dev
, "Selecting alt setting for interface %d\n",
138 /* We know the alternate setting is 1 for the MC8785 */
139 usb_set_interface(udev
, ifnum
, 1);
142 /* Dummy interface present on some SKUs should be ignored */
145 else if (numendpoints
<= 3)
148 *num_ports
= (numendpoints
-1)/2;
151 * save off our num_ports info so that we can use it in the
152 * calc_num_ports callback
154 usb_set_serial_data(serial
, (void *)num_ports
);
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 */
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, 0x683B) }, /* Sierra Wireless MC8785 Composite */
190 { USB_DEVICE(0x1199, 0x683C) }, /* Sierra Wireless MC8790 */
191 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8790 */
192 { USB_DEVICE(0x1199, 0x683E) }, /* Sierra Wireless MC8790 */
193 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
194 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
195 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
196 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
197 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
198 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
199 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
200 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
201 /* Sierra Wireless C885 */
202 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
203 /* Sierra Wireless Device */
204 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
205 /* Sierra Wireless Device */
206 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
207 /* Sierra Wireless Device */
208 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
210 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
211 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
215 MODULE_DEVICE_TABLE(usb
, id_table
);
217 static struct usb_driver sierra_driver
= {
219 .probe
= usb_serial_probe
,
220 .disconnect
= usb_serial_disconnect
,
221 .id_table
= id_table
,
225 struct sierra_port_private
{
226 spinlock_t lock
; /* lock the structure */
227 int outstanding_urbs
; /* number of out urbs in flight */
229 /* Input endpoints and buffers for this port */
230 struct urb
*in_urbs
[N_IN_URB
];
231 char *in_buffer
[N_IN_URB
];
233 /* Settings for the port */
234 int rts_state
; /* Handshaking pins (outputs) */
236 int cts_state
; /* Handshaking pins (inputs) */
242 static int sierra_send_setup(struct tty_struct
*tty
,
243 struct usb_serial_port
*port
)
245 struct usb_serial
*serial
= port
->serial
;
246 struct sierra_port_private
*portdata
;
251 portdata
= usb_get_serial_port_data(port
);
255 if (portdata
->dtr_state
)
257 if (portdata
->rts_state
)
260 /* If composite device then properly report interface */
261 if (serial
->num_ports
== 1)
262 interface
= sierra_calc_interface(serial
);
264 /* Otherwise the need to do non-composite mapping */
266 if (port
->bulk_out_endpointAddress
== 2)
268 else if (port
->bulk_out_endpointAddress
== 4)
270 else if (port
->bulk_out_endpointAddress
== 5)
274 return usb_control_msg(serial
->dev
,
275 usb_rcvctrlpipe(serial
->dev
, 0),
276 0x22, 0x21, val
, interface
,
277 NULL
, 0, USB_CTRL_SET_TIMEOUT
);
283 static void sierra_set_termios(struct tty_struct
*tty
,
284 struct usb_serial_port
*port
, struct ktermios
*old_termios
)
287 tty_termios_copy_hw(tty
->termios
, old_termios
);
288 sierra_send_setup(tty
, port
);
291 static int sierra_tiocmget(struct tty_struct
*tty
, struct file
*file
)
293 struct usb_serial_port
*port
= tty
->driver_data
;
295 struct sierra_port_private
*portdata
;
297 portdata
= usb_get_serial_port_data(port
);
299 value
= ((portdata
->rts_state
) ? TIOCM_RTS
: 0) |
300 ((portdata
->dtr_state
) ? TIOCM_DTR
: 0) |
301 ((portdata
->cts_state
) ? TIOCM_CTS
: 0) |
302 ((portdata
->dsr_state
) ? TIOCM_DSR
: 0) |
303 ((portdata
->dcd_state
) ? TIOCM_CAR
: 0) |
304 ((portdata
->ri_state
) ? TIOCM_RNG
: 0);
309 static int sierra_tiocmset(struct tty_struct
*tty
, struct file
*file
,
310 unsigned int set
, unsigned int clear
)
312 struct usb_serial_port
*port
= tty
->driver_data
;
313 struct sierra_port_private
*portdata
;
315 portdata
= usb_get_serial_port_data(port
);
318 portdata
->rts_state
= 1;
320 portdata
->dtr_state
= 1;
322 if (clear
& TIOCM_RTS
)
323 portdata
->rts_state
= 0;
324 if (clear
& TIOCM_DTR
)
325 portdata
->dtr_state
= 0;
326 return sierra_send_setup(tty
, port
);
329 static void sierra_outdat_callback(struct urb
*urb
)
331 struct usb_serial_port
*port
= urb
->context
;
332 struct sierra_port_private
*portdata
= usb_get_serial_port_data(port
);
333 int status
= urb
->status
;
336 dbg("%s - port %d", __func__
, port
->number
);
338 /* free up the transfer buffer, as usb_free_urb() does not do this */
339 kfree(urb
->transfer_buffer
);
342 dbg("%s - nonzero write bulk status received: %d",
345 spin_lock_irqsave(&portdata
->lock
, flags
);
346 --portdata
->outstanding_urbs
;
347 spin_unlock_irqrestore(&portdata
->lock
, flags
);
349 usb_serial_port_softint(port
);
353 static int sierra_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
354 const unsigned char *buf
, int count
)
356 struct sierra_port_private
*portdata
= usb_get_serial_port_data(port
);
357 struct usb_serial
*serial
= port
->serial
;
359 unsigned char *buffer
;
363 portdata
= usb_get_serial_port_data(port
);
365 dbg("%s: write (%d chars)", __func__
, count
);
367 spin_lock_irqsave(&portdata
->lock
, flags
);
368 if (portdata
->outstanding_urbs
> N_OUT_URB
) {
369 spin_unlock_irqrestore(&portdata
->lock
, flags
);
370 dbg("%s - write limit hit\n", __func__
);
373 portdata
->outstanding_urbs
++;
374 spin_unlock_irqrestore(&portdata
->lock
, flags
);
376 buffer
= kmalloc(count
, GFP_ATOMIC
);
378 dev_err(&port
->dev
, "out of memory\n");
380 goto error_no_buffer
;
383 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
385 dev_err(&port
->dev
, "no more free urbs\n");
390 memcpy(buffer
, buf
, count
);
392 usb_serial_debug_data(debug
, &port
->dev
, __func__
, count
, buffer
);
394 usb_fill_bulk_urb(urb
, serial
->dev
,
395 usb_sndbulkpipe(serial
->dev
,
396 port
->bulk_out_endpointAddress
),
397 buffer
, count
, sierra_outdat_callback
, port
);
399 /* send it down the pipe */
400 status
= usb_submit_urb(urb
, GFP_ATOMIC
);
402 dev_err(&port
->dev
, "%s - usb_submit_urb(write bulk) failed "
403 "with status = %d\n", __func__
, status
);
408 /* we are done with this urb, so let the host driver
409 * really free it when it is finished with it */
418 spin_lock_irqsave(&portdata
->lock
, flags
);
419 --portdata
->outstanding_urbs
;
420 spin_unlock_irqrestore(&portdata
->lock
, flags
);
424 static void sierra_indat_callback(struct urb
*urb
)
428 struct usb_serial_port
*port
;
429 struct tty_struct
*tty
;
430 unsigned char *data
= urb
->transfer_buffer
;
431 int status
= urb
->status
;
433 dbg("%s: %p", __func__
, urb
);
435 endpoint
= usb_pipeendpoint(urb
->pipe
);
439 dbg("%s: nonzero status: %d on endpoint %02x.",
440 __func__
, status
, endpoint
);
442 tty
= port
->port
.tty
;
443 if (urb
->actual_length
) {
444 tty_buffer_request_room(tty
, urb
->actual_length
);
445 tty_insert_flip_string(tty
, data
, urb
->actual_length
);
446 tty_flip_buffer_push(tty
);
448 dbg("%s: empty read urb received", __func__
);
451 /* Resubmit urb so we continue receiving */
452 if (port
->port
.count
&& status
!= -ESHUTDOWN
) {
453 err
= usb_submit_urb(urb
, GFP_ATOMIC
);
455 dev_err(&port
->dev
, "resubmit read urb failed."
462 static void sierra_instat_callback(struct urb
*urb
)
465 int status
= urb
->status
;
466 struct usb_serial_port
*port
= urb
->context
;
467 struct sierra_port_private
*portdata
= usb_get_serial_port_data(port
);
468 struct usb_serial
*serial
= port
->serial
;
471 dbg("%s: urb %p port %p has data %p", __func__
, urb
, port
, portdata
);
474 struct usb_ctrlrequest
*req_pkt
=
475 (struct usb_ctrlrequest
*)urb
->transfer_buffer
;
478 dbg("%s: NULL req_pkt\n", __func__
);
481 if ((req_pkt
->bRequestType
== 0xA1) &&
482 (req_pkt
->bRequest
== 0x20)) {
484 unsigned char signals
= *((unsigned char *)
485 urb
->transfer_buffer
+
486 sizeof(struct usb_ctrlrequest
));
488 dbg("%s: signal x%x", __func__
, signals
);
490 old_dcd_state
= portdata
->dcd_state
;
491 portdata
->cts_state
= 1;
492 portdata
->dcd_state
= ((signals
& 0x01) ? 1 : 0);
493 portdata
->dsr_state
= ((signals
& 0x02) ? 1 : 0);
494 portdata
->ri_state
= ((signals
& 0x08) ? 1 : 0);
496 if (port
->port
.tty
&& !C_CLOCAL(port
->port
.tty
) &&
497 old_dcd_state
&& !portdata
->dcd_state
)
498 tty_hangup(port
->port
.tty
);
500 dbg("%s: type %x req %x", __func__
,
501 req_pkt
->bRequestType
, req_pkt
->bRequest
);
504 dbg("%s: error %d", __func__
, status
);
506 /* Resubmit urb so we continue receiving IRQ data */
507 if (status
!= -ESHUTDOWN
) {
508 urb
->dev
= serial
->dev
;
509 err
= usb_submit_urb(urb
, GFP_ATOMIC
);
511 dbg("%s: resubmit intr urb failed. (%d)",
516 static int sierra_write_room(struct tty_struct
*tty
)
518 struct usb_serial_port
*port
= tty
->driver_data
;
519 struct sierra_port_private
*portdata
= usb_get_serial_port_data(port
);
522 dbg("%s - port %d", __func__
, port
->number
);
524 /* try to give a good number back based on if we have any free urbs at
525 * this point in time */
526 spin_lock_irqsave(&portdata
->lock
, flags
);
527 if (portdata
->outstanding_urbs
> N_OUT_URB
* 2 / 3) {
528 spin_unlock_irqrestore(&portdata
->lock
, flags
);
529 dbg("%s - write limit hit\n", __func__
);
532 spin_unlock_irqrestore(&portdata
->lock
, flags
);
537 static int sierra_open(struct tty_struct
*tty
,
538 struct usb_serial_port
*port
, struct file
*filp
)
540 struct sierra_port_private
*portdata
;
541 struct usb_serial
*serial
= port
->serial
;
546 portdata
= usb_get_serial_port_data(port
);
550 /* Set some sane defaults */
551 portdata
->rts_state
= 1;
552 portdata
->dtr_state
= 1;
554 /* Reset low level data toggle and start reading from endpoints */
555 for (i
= 0; i
< N_IN_URB
; i
++) {
556 urb
= portdata
->in_urbs
[i
];
559 if (urb
->dev
!= serial
->dev
) {
560 dbg("%s: dev %p != %p", __func__
,
561 urb
->dev
, serial
->dev
);
566 * make sure endpoint data toggle is synchronized with the
569 usb_clear_halt(urb
->dev
, urb
->pipe
);
571 result
= usb_submit_urb(urb
, GFP_KERNEL
);
573 dev_err(&port
->dev
, "submit urb %d failed (%d) %d\n",
574 i
, result
, urb
->transfer_buffer_length
);
579 tty
->low_latency
= 1;
581 sierra_send_setup(tty
, port
);
583 /* start up the interrupt endpoint if we have one */
584 if (port
->interrupt_in_urb
) {
585 result
= usb_submit_urb(port
->interrupt_in_urb
, GFP_KERNEL
);
587 dev_err(&port
->dev
, "submit irq_in urb failed %d\n",
593 static void sierra_close(struct tty_struct
*tty
,
594 struct usb_serial_port
*port
, struct file
*filp
)
597 struct usb_serial
*serial
= port
->serial
;
598 struct sierra_port_private
*portdata
;
601 portdata
= usb_get_serial_port_data(port
);
603 portdata
->rts_state
= 0;
604 portdata
->dtr_state
= 0;
607 mutex_lock(&serial
->disc_mutex
);
608 if (!serial
->disconnected
)
609 sierra_send_setup(tty
, port
);
610 mutex_unlock(&serial
->disc_mutex
);
612 /* Stop reading/writing urbs */
613 for (i
= 0; i
< N_IN_URB
; i
++)
614 usb_kill_urb(portdata
->in_urbs
[i
]);
617 usb_kill_urb(port
->interrupt_in_urb
);
619 port
->port
.tty
= NULL
; /* FIXME */
622 static int sierra_startup(struct usb_serial
*serial
)
624 struct usb_serial_port
*port
;
625 struct sierra_port_private
*portdata
;
632 /* Set Device mode to D0 */
633 sierra_set_power_state(serial
->dev
, 0x0000);
635 /* Check NMEA and set */
637 sierra_vsc_set_nmea(serial
->dev
, 1);
639 /* Now setup per port private data */
640 for (i
= 0; i
< serial
->num_ports
; i
++) {
641 port
= serial
->port
[i
];
642 portdata
= kzalloc(sizeof(*portdata
), GFP_KERNEL
);
644 dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
648 spin_lock_init(&portdata
->lock
);
649 for (j
= 0; j
< N_IN_URB
; j
++) {
650 portdata
->in_buffer
[j
] = kmalloc(IN_BUFLEN
, GFP_KERNEL
);
651 if (!portdata
->in_buffer
[j
]) {
652 for (--j
; j
>= 0; j
--)
653 kfree(portdata
->in_buffer
[j
]);
659 usb_set_serial_port_data(port
, portdata
);
661 /* initialize the in urbs */
662 for (j
= 0; j
< N_IN_URB
; ++j
) {
663 urb
= usb_alloc_urb(0, GFP_KERNEL
);
665 dbg("%s: alloc for in port failed.",
669 /* Fill URB using supplied data. */
670 usb_fill_bulk_urb(urb
, serial
->dev
,
671 usb_rcvbulkpipe(serial
->dev
,
672 port
->bulk_in_endpointAddress
),
673 portdata
->in_buffer
[j
], IN_BUFLEN
,
674 sierra_indat_callback
, port
);
675 portdata
->in_urbs
[j
] = urb
;
682 static void sierra_shutdown(struct usb_serial
*serial
)
685 struct usb_serial_port
*port
;
686 struct sierra_port_private
*portdata
;
690 for (i
= 0; i
< serial
->num_ports
; ++i
) {
691 port
= serial
->port
[i
];
694 portdata
= usb_get_serial_port_data(port
);
698 for (j
= 0; j
< N_IN_URB
; j
++) {
699 usb_kill_urb(portdata
->in_urbs
[j
]);
700 usb_free_urb(portdata
->in_urbs
[j
]);
701 kfree(portdata
->in_buffer
[j
]);
704 usb_set_serial_port_data(port
, NULL
);
708 static struct usb_serial_driver sierra_device
= {
710 .owner
= THIS_MODULE
,
713 .description
= "Sierra USB modem",
714 .id_table
= id_table
,
715 .usb_driver
= &sierra_driver
,
716 .calc_num_ports
= sierra_calc_num_ports
,
717 .probe
= sierra_probe
,
719 .close
= sierra_close
,
720 .write
= sierra_write
,
721 .write_room
= sierra_write_room
,
722 .set_termios
= sierra_set_termios
,
723 .tiocmget
= sierra_tiocmget
,
724 .tiocmset
= sierra_tiocmset
,
725 .attach
= sierra_startup
,
726 .shutdown
= sierra_shutdown
,
727 .read_int_callback
= sierra_instat_callback
,
730 /* Functions used by new usb-serial code. */
731 static int __init
sierra_init(void)
734 retval
= usb_serial_register(&sierra_device
);
736 goto failed_device_register
;
739 retval
= usb_register(&sierra_driver
);
741 goto failed_driver_register
;
743 info(DRIVER_DESC
": " DRIVER_VERSION
);
747 failed_driver_register
:
748 usb_serial_deregister(&sierra_device
);
749 failed_device_register
:
753 static void __exit
sierra_exit(void)
755 usb_deregister(&sierra_driver
);
756 usb_serial_deregister(&sierra_device
);
759 module_init(sierra_init
);
760 module_exit(sierra_exit
);
762 MODULE_AUTHOR(DRIVER_AUTHOR
);
763 MODULE_DESCRIPTION(DRIVER_DESC
);
764 MODULE_VERSION(DRIVER_VERSION
);
765 MODULE_LICENSE("GPL");
767 module_param(nmea
, bool, S_IRUGO
| S_IWUSR
);
768 MODULE_PARM_DESC(nmea
, "NMEA streaming");
770 module_param(debug
, bool, S_IRUGO
| S_IWUSR
);
771 MODULE_PARM_DESC(debug
, "Debug messages");