2 * USB Keyspan PDA / Xircom / Entregra Converter driver
4 * Copyright (C) 1999 - 2001 Greg Kroah-Hartman <greg@kroah.com>
5 * Copyright (C) 1999, 2000 Brian Warner <warner@lothar.com>
6 * Copyright (C) 2000 Al Borchers <borchers@steinerpoint.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * See Documentation/usb/usb-serial.txt for more information on using this
17 * cleaned up the Xircom support. Added ids for Entregra device which is
18 * the same as the Xircom device. Enabled the code to be compiled for
19 * either Xircom or Keyspan devices.
21 * (08/11/2001) Cristian M. Craciunescu
22 * support for Xircom PGSDB9
25 * switched from using spinlock to a semaphore, which fixes lots of
29 * Identify version on module load.
31 * (11/01/2000) Adam J. Richter
32 * usb_device_id table support
35 * Fixed bug with urb->dev not being set properly, now that the usb
39 * Added locks for SMP safeness.
40 * Fixed MOD_INC and MOD_DEC logic and the ability to open a port more
43 * (07/20/2000) borchers
44 * - keyspan_pda_write no longer sleeps if it is called on interrupt time;
45 * PPP and the line discipline with stty echo on can call write on
46 * interrupt time and this would cause an oops if write slept
47 * - if keyspan_pda_write is in an interrupt, it will not call
48 * usb_control_msg (which sleeps) to query the room in the device
49 * buffer, it simply uses the current room value it has
50 * - if the urb is busy or if it is throttled keyspan_pda_write just
51 * returns 0, rather than sleeping to wait for this to change; the
52 * write_chan code in n_tty.c will sleep if needed before calling
53 * keyspan_pda_write again
54 * - if the device needs to be unthrottled, write now queues up the
55 * call to usb_control_msg (which sleeps) to unthrottle the device
56 * - the wakeups from keyspan_pda_write_bulk_callback are queued rather
57 * than done directly from the callback to avoid the race in write_chan
58 * - keyspan_pda_chars_in_buffer also indicates its buffer is full if the
59 * urb status is -EINPROGRESS, meaning it cannot write at the moment
62 * Added module_init and module_exit functions to handle the fact that this
63 * driver is a loadable module now.
66 * Split driver up into device specific pieces.
71 #include <linux/kernel.h>
72 #include <linux/errno.h>
73 #include <linux/init.h>
74 #include <linux/slab.h>
75 #include <linux/tty.h>
76 #include <linux/tty_driver.h>
77 #include <linux/tty_flip.h>
78 #include <linux/module.h>
79 #include <linux/spinlock.h>
80 #include <linux/workqueue.h>
81 #include <linux/firmware.h>
82 #include <linux/ihex.h>
83 #include <linux/uaccess.h>
84 #include <linux/usb.h>
85 #include <linux/usb/serial.h>
89 /* make a simple define to handle if we are compiling keyspan_pda or xircom support */
90 #if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE)
95 #if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE)
102 * Version Information
104 #define DRIVER_VERSION "v1.1"
105 #define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>"
106 #define DRIVER_DESC "USB Keyspan PDA Converter driver"
108 struct keyspan_pda_private {
111 struct work_struct wakeup_work;
112 struct work_struct unthrottle_work;
113 struct usb_serial *serial;
114 struct usb_serial_port *port;
118 #define KEYSPAN_VENDOR_ID 0x06cd
119 #define KEYSPAN_PDA_FAKE_ID 0x0103
120 #define KEYSPAN_PDA_ID 0x0104 /* no clue */
122 /* For Xircom PGSDB9 and older Entregra version of the same device */
123 #define XIRCOM_VENDOR_ID 0x085a
124 #define XIRCOM_FAKE_ID 0x8027
125 #define ENTREGRA_VENDOR_ID 0x1645
126 #define ENTREGRA_FAKE_ID 0x8093
128 static struct usb_device_id id_table_combined [] = {
130 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
133 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
134 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
136 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
137 { } /* Terminating entry */
140 MODULE_DEVICE_TABLE(usb, id_table_combined);
142 static struct usb_driver keyspan_pda_driver = {
143 .name = "keyspan_pda",
144 .probe = usb_serial_probe,
145 .disconnect = usb_serial_disconnect,
146 .id_table = id_table_combined,
150 static struct usb_device_id id_table_std [] = {
151 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
152 { } /* Terminating entry */
156 static struct usb_device_id id_table_fake [] = {
157 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
158 { } /* Terminating entry */
163 static struct usb_device_id id_table_fake_xircom [] = {
164 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
165 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
170 static void keyspan_pda_wakeup_write(struct work_struct *work)
172 struct keyspan_pda_private *priv =
173 container_of(work, struct keyspan_pda_private, wakeup_work);
174 struct usb_serial_port *port = priv->port;
176 tty_wakeup(port->port.tty);
179 static void keyspan_pda_request_unthrottle(struct work_struct *work)
181 struct keyspan_pda_private *priv =
182 container_of(work, struct keyspan_pda_private, unthrottle_work);
183 struct usb_serial *serial = priv->serial;
186 dbg(" request_unthrottle");
187 /* ask the device to tell us when the tx buffer becomes
188 sufficiently empty */
189 result = usb_control_msg(serial->dev,
190 usb_sndctrlpipe(serial->dev, 0),
191 7, /* request_unthrottle */
192 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
194 16, /* value: threshold */
200 dbg("%s - error %d from usb_control_msg",
205 static void keyspan_pda_rx_interrupt(struct urb *urb)
207 struct usb_serial_port *port = urb->context;
208 struct tty_struct *tty = port->port.tty;
209 unsigned char *data = urb->transfer_buffer;
211 int status = urb->status;
212 struct keyspan_pda_private *priv;
213 priv = usb_get_serial_port_data(port);
222 /* this urb is terminated, clean up */
223 dbg("%s - urb shutting down with status: %d",
227 dbg("%s - nonzero urb status received: %d",
232 /* see if the message is data or a status interrupt */
235 /* rest of message is rx data */
236 if (urb->actual_length) {
237 tty_insert_flip_string(tty, data + 1,
238 urb->actual_length - 1);
239 tty_flip_buffer_push(tty);
243 /* status interrupt */
244 dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
246 case 1: /* modemline change */
248 case 2: /* tx unthrottle interrupt */
249 priv->tx_throttled = 0;
250 /* queue up a wakeup at scheduler time */
251 schedule_work(&priv->wakeup_work);
262 retval = usb_submit_urb(urb, GFP_ATOMIC);
264 err("%s - usb_submit_urb failed with result %d",
269 static void keyspan_pda_rx_throttle(struct tty_struct *tty)
271 /* stop receiving characters. We just turn off the URB request, and
272 let chars pile up in the device. If we're doing hardware
273 flowcontrol, the device will signal the other end when its buffer
274 fills up. If we're doing XON/XOFF, this would be a good time to
275 send an XOFF, although it might make sense to foist that off
276 upon the device too. */
277 struct usb_serial_port *port = tty->driver_data;
278 dbg("keyspan_pda_rx_throttle port %d", port->number);
279 usb_kill_urb(port->interrupt_in_urb);
283 static void keyspan_pda_rx_unthrottle(struct tty_struct *tty)
285 struct usb_serial_port *port = tty->driver_data;
286 /* just restart the receive interrupt URB */
287 dbg("keyspan_pda_rx_unthrottle port %d", port->number);
288 port->interrupt_in_urb->dev = port->serial->dev;
289 if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC))
290 dbg(" usb_submit_urb(read urb) failed");
295 static speed_t keyspan_pda_setbaud(struct usb_serial *serial, speed_t baud)
332 bindex = 5; /* Default to 9600 */
336 /* rather than figure out how to sleep while waiting for this
337 to complete, I just use the "legacy" API. */
338 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
341 | USB_RECIP_INTERFACE
342 | USB_DIR_OUT, /* type */
354 static void keyspan_pda_break_ctl(struct tty_struct *tty, int break_state)
356 struct usb_serial_port *port = tty->driver_data;
357 struct usb_serial *serial = port->serial;
361 if (break_state == -1)
362 value = 1; /* start break */
364 value = 0; /* clear break */
365 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
367 USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
368 value, 0, NULL, 0, 2000);
370 dbg("%s - error %d from usb_control_msg",
372 /* there is something funky about this.. the TCSBRK that 'cu' performs
373 ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
374 seconds apart, but it feels like the break sent isn't as long as it
379 static void keyspan_pda_set_termios(struct tty_struct *tty,
380 struct usb_serial_port *port, struct ktermios *old_termios)
382 struct usb_serial *serial = port->serial;
385 /* cflag specifies lots of stuff: number of stop bits, parity, number
386 of data bits, baud. What can the device actually handle?:
387 CSTOPB (1 stop bit or 2)
390 There is minimal hw support for parity (a PSW bit seems to hold the
391 parity of whatever is in the accumulator). The UART either deals
392 with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
393 1 special, stop). So, with firmware changes, we could do:
395 8N2: 11 bit, extra bit always (mark?)
396 8[EOMS]1: 11 bit, extra bit is parity
397 7[EOMS]1: 10 bit, b0/b7 is parity
398 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
400 HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
403 For now, just do baud. */
405 speed = tty_get_baud_rate(tty);
406 speed = keyspan_pda_setbaud(serial, speed);
409 dbg("can't handle requested baud rate");
410 /* It hasn't changed so.. */
411 speed = tty_termios_baud_rate(old_termios);
413 /* Only speed can change so copy the old h/w parameters
414 then encode the new speed */
415 tty_termios_copy_hw(tty->termios, old_termios);
416 tty_encode_baud_rate(tty, speed, speed);
420 /* modem control pins: DTR and RTS are outputs and can be controlled.
421 DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
422 read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
424 static int keyspan_pda_get_modem_info(struct usb_serial *serial,
425 unsigned char *value)
429 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
431 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
432 0, 0, &data, 1, 2000);
439 static int keyspan_pda_set_modem_info(struct usb_serial *serial,
443 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
445 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
446 value, 0, NULL, 0, 2000);
450 static int keyspan_pda_tiocmget(struct tty_struct *tty, struct file *file)
452 struct usb_serial_port *port = tty->driver_data;
453 struct usb_serial *serial = port->serial;
455 unsigned char status;
458 rc = keyspan_pda_get_modem_info(serial, &status);
462 ((status & (1<<7)) ? TIOCM_DTR : 0) |
463 ((status & (1<<6)) ? TIOCM_CAR : 0) |
464 ((status & (1<<5)) ? TIOCM_RNG : 0) |
465 ((status & (1<<4)) ? TIOCM_DSR : 0) |
466 ((status & (1<<3)) ? TIOCM_CTS : 0) |
467 ((status & (1<<2)) ? TIOCM_RTS : 0);
471 static int keyspan_pda_tiocmset(struct tty_struct *tty, struct file *file,
472 unsigned int set, unsigned int clear)
474 struct usb_serial_port *port = tty->driver_data;
475 struct usb_serial *serial = port->serial;
477 unsigned char status;
479 rc = keyspan_pda_get_modem_info(serial, &status);
488 if (clear & TIOCM_RTS)
490 if (clear & TIOCM_DTR)
492 rc = keyspan_pda_set_modem_info(serial, status);
496 static int keyspan_pda_write(struct tty_struct *tty,
497 struct usb_serial_port *port, const unsigned char *buf, int count)
499 struct usb_serial *serial = port->serial;
500 int request_unthrottle = 0;
502 struct keyspan_pda_private *priv;
504 priv = usb_get_serial_port_data(port);
505 /* guess how much room is left in the device's ring buffer, and if we
506 want to send more than that, check first, updating our notion of
507 what is left. If our write will result in no room left, ask the
508 device to give us an interrupt when the room available rises above
509 a threshold, and hold off all writers (eventually, those using
510 select() or poll() too) until we receive that unthrottle interrupt.
511 Block if we can't write anything at all, otherwise write as much as
513 dbg("keyspan_pda_write(%d)", count);
515 dbg(" write request of 0 bytes");
519 /* we might block because of:
520 the TX urb is in-flight (wait until it completes)
521 the device is full (wait until it says there is room)
523 spin_lock_bh(&port->lock);
524 if (port->write_urb_busy || priv->tx_throttled) {
525 spin_unlock_bh(&port->lock);
528 port->write_urb_busy = 1;
529 spin_unlock_bh(&port->lock);
531 /* At this point the URB is in our control, nobody else can submit it
532 again (the only sudden transition was the one from EINPROGRESS to
533 finished). Also, the tx process is not throttled. So we are
536 count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
538 /* Check if we might overrun the Tx buffer. If so, ask the
539 device how much room it really has. This is done only on
540 scheduler time, since usb_control_msg() sleeps. */
541 if (count > priv->tx_room && !in_interrupt()) {
543 rc = usb_control_msg(serial->dev,
544 usb_rcvctrlpipe(serial->dev, 0),
546 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
548 0, /* value: 0 means "remaining room" */
554 dbg(" roomquery failed");
558 dbg(" roomquery returned 0 bytes");
559 rc = -EIO; /* device didn't return any data */
562 dbg(" roomquery says %d", room);
563 priv->tx_room = room;
565 if (count > priv->tx_room) {
566 /* we're about to completely fill the Tx buffer, so
567 we'll be throttled afterwards. */
568 count = priv->tx_room;
569 request_unthrottle = 1;
573 /* now transfer data */
574 memcpy(port->write_urb->transfer_buffer, buf, count);
575 /* send the data out the bulk port */
576 port->write_urb->transfer_buffer_length = count;
578 priv->tx_room -= count;
580 port->write_urb->dev = port->serial->dev;
581 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
583 dbg(" usb_submit_urb(write bulk) failed");
587 /* There wasn't any room left, so we are throttled until
588 the buffer empties a bit */
589 request_unthrottle = 1;
592 if (request_unthrottle) {
593 priv->tx_throttled = 1; /* block writers */
594 schedule_work(&priv->unthrottle_work);
600 port->write_urb_busy = 0;
605 static void keyspan_pda_write_bulk_callback(struct urb *urb)
607 struct usb_serial_port *port = urb->context;
608 struct keyspan_pda_private *priv;
610 port->write_urb_busy = 0;
611 priv = usb_get_serial_port_data(port);
613 /* queue up a wakeup at scheduler time */
614 schedule_work(&priv->wakeup_work);
618 static int keyspan_pda_write_room(struct tty_struct *tty)
620 struct usb_serial_port *port = tty->driver_data;
621 struct keyspan_pda_private *priv;
622 priv = usb_get_serial_port_data(port);
623 /* used by n_tty.c for processing of tabs and such. Giving it our
624 conservative guess is probably good enough, but needs testing by
625 running a console through the device. */
626 return priv->tx_room;
630 static int keyspan_pda_chars_in_buffer(struct tty_struct *tty)
632 struct usb_serial_port *port = tty->driver_data;
633 struct keyspan_pda_private *priv;
637 priv = usb_get_serial_port_data(port);
639 /* when throttled, return at least WAKEUP_CHARS to tell select() (via
640 n_tty.c:normal_poll() ) that we're not writeable. */
642 spin_lock_irqsave(&port->lock, flags);
643 if (port->write_urb_busy || priv->tx_throttled)
645 spin_unlock_irqrestore(&port->lock, flags);
650 static int keyspan_pda_open(struct tty_struct *tty,
651 struct usb_serial_port *port, struct file *filp)
653 struct usb_serial *serial = port->serial;
656 struct keyspan_pda_private *priv;
658 /* find out how much room is in the Tx ring */
659 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
661 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
669 dbg("%s - roomquery failed", __func__);
673 dbg("%s - roomquery returned 0 bytes", __func__);
677 priv = usb_get_serial_port_data(port);
678 priv->tx_room = room;
679 priv->tx_throttled = room ? 0 : 1;
681 /* the normal serial device seems to always turn on DTR and RTS here,
683 if (tty && (tty->termios->c_cflag & CBAUD))
684 keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2));
686 keyspan_pda_set_modem_info(serial, 0);
688 /*Start reading from the device*/
689 port->interrupt_in_urb->dev = serial->dev;
690 rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
692 dbg("%s - usb_submit_urb(read int) failed", __func__);
701 static void keyspan_pda_close(struct tty_struct *tty,
702 struct usb_serial_port *port, struct file *filp)
704 struct usb_serial *serial = port->serial;
707 /* the normal serial device seems to always shut
708 off DTR and RTS now */
709 if (tty->termios->c_cflag & HUPCL)
710 keyspan_pda_set_modem_info(serial, 0);
712 /* shutdown our bulk reads and writes */
713 usb_kill_urb(port->write_urb);
714 usb_kill_urb(port->interrupt_in_urb);
719 /* download the firmware to a "fake" device (pre-renumeration) */
720 static int keyspan_pda_fake_startup(struct usb_serial *serial)
724 const struct ihex_binrec *record;
725 const struct firmware *fw;
727 /* download the firmware here ... */
728 response = ezusb_set_reset(serial, 1);
732 else if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID)
733 fw_name = "keyspan_pda/keyspan_pda.fw";
736 else if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) ||
737 (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGRA_VENDOR_ID))
738 fw_name = "keyspan_pda/xircom_pgs.fw";
741 err("%s: unknown vendor, aborting.", __func__);
744 if (request_ihex_firmware(&fw, fw_name, &serial->dev->dev)) {
745 err("failed to load firmware \"%s\"\n", fw_name);
748 record = (const struct ihex_binrec *)fw->data;
751 response = ezusb_writememory(serial, be32_to_cpu(record->addr),
752 (unsigned char *)record->data,
753 be16_to_cpu(record->len), 0xa0);
755 err("ezusb_writememory failed for Keyspan PDA "
756 "firmware (%d %04X %p %d)",
757 response, be32_to_cpu(record->addr),
758 record->data, be16_to_cpu(record->len));
761 record = ihex_next_binrec(record);
763 release_firmware(fw);
764 /* bring device out of reset. Renumeration will occur in a moment
765 and the new device will bind to the real driver */
766 response = ezusb_set_reset(serial, 0);
768 /* we want this device to fail to have a driver assigned to it. */
772 static int keyspan_pda_startup(struct usb_serial *serial)
775 struct keyspan_pda_private *priv;
777 /* allocate the private data structures for all ports. Well, for all
780 priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
782 return 1; /* error */
783 usb_set_serial_port_data(serial->port[0], priv);
784 init_waitqueue_head(&serial->port[0]->write_wait);
785 INIT_WORK(&priv->wakeup_work, keyspan_pda_wakeup_write);
786 INIT_WORK(&priv->unthrottle_work, keyspan_pda_request_unthrottle);
787 priv->serial = serial;
788 priv->port = serial->port[0];
792 static void keyspan_pda_shutdown(struct usb_serial *serial)
796 kfree(usb_get_serial_port_data(serial->port[0]));
800 static struct usb_serial_driver keyspan_pda_fake_device = {
802 .owner = THIS_MODULE,
803 .name = "keyspan_pda_pre",
805 .description = "Keyspan PDA - (prerenumeration)",
806 .usb_driver = &keyspan_pda_driver,
807 .id_table = id_table_fake,
809 .attach = keyspan_pda_fake_startup,
814 static struct usb_serial_driver xircom_pgs_fake_device = {
816 .owner = THIS_MODULE,
817 .name = "xircom_no_firm",
819 .description = "Xircom / Entregra PGS - (prerenumeration)",
820 .usb_driver = &keyspan_pda_driver,
821 .id_table = id_table_fake_xircom,
823 .attach = keyspan_pda_fake_startup,
827 static struct usb_serial_driver keyspan_pda_device = {
829 .owner = THIS_MODULE,
830 .name = "keyspan_pda",
832 .description = "Keyspan PDA",
833 .usb_driver = &keyspan_pda_driver,
834 .id_table = id_table_std,
836 .open = keyspan_pda_open,
837 .close = keyspan_pda_close,
838 .write = keyspan_pda_write,
839 .write_room = keyspan_pda_write_room,
840 .write_bulk_callback = keyspan_pda_write_bulk_callback,
841 .read_int_callback = keyspan_pda_rx_interrupt,
842 .chars_in_buffer = keyspan_pda_chars_in_buffer,
843 .throttle = keyspan_pda_rx_throttle,
844 .unthrottle = keyspan_pda_rx_unthrottle,
845 .set_termios = keyspan_pda_set_termios,
846 .break_ctl = keyspan_pda_break_ctl,
847 .tiocmget = keyspan_pda_tiocmget,
848 .tiocmset = keyspan_pda_tiocmset,
849 .attach = keyspan_pda_startup,
850 .shutdown = keyspan_pda_shutdown,
854 static int __init keyspan_pda_init(void)
857 retval = usb_serial_register(&keyspan_pda_device);
859 goto failed_pda_register;
861 retval = usb_serial_register(&keyspan_pda_fake_device);
863 goto failed_pda_fake_register;
866 retval = usb_serial_register(&xircom_pgs_fake_device);
868 goto failed_xircom_register;
870 retval = usb_register(&keyspan_pda_driver);
872 goto failed_usb_register;
873 info(DRIVER_DESC " " DRIVER_VERSION);
877 usb_serial_deregister(&xircom_pgs_fake_device);
878 failed_xircom_register:
881 usb_serial_deregister(&keyspan_pda_fake_device);
884 failed_pda_fake_register:
886 usb_serial_deregister(&keyspan_pda_device);
892 static void __exit keyspan_pda_exit(void)
894 usb_deregister(&keyspan_pda_driver);
895 usb_serial_deregister(&keyspan_pda_device);
897 usb_serial_deregister(&keyspan_pda_fake_device);
900 usb_serial_deregister(&xircom_pgs_fake_device);
905 module_init(keyspan_pda_init);
906 module_exit(keyspan_pda_exit);
908 MODULE_AUTHOR(DRIVER_AUTHOR);
909 MODULE_DESCRIPTION(DRIVER_DESC);
910 MODULE_LICENSE("GPL");
912 module_param(debug, bool, S_IRUGO | S_IWUSR);
913 MODULE_PARM_DESC(debug, "Debug enabled or not");