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;
175 struct tty_struct *tty = tty_port_tty_get(&port->port);
180 static void keyspan_pda_request_unthrottle(struct work_struct *work)
182 struct keyspan_pda_private *priv =
183 container_of(work, struct keyspan_pda_private, unthrottle_work);
184 struct usb_serial *serial = priv->serial;
187 dbg(" request_unthrottle");
188 /* ask the device to tell us when the tx buffer becomes
189 sufficiently empty */
190 result = usb_control_msg(serial->dev,
191 usb_sndctrlpipe(serial->dev, 0),
192 7, /* request_unthrottle */
193 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
195 16, /* value: threshold */
201 dbg("%s - error %d from usb_control_msg",
206 static void keyspan_pda_rx_interrupt(struct urb *urb)
208 struct usb_serial_port *port = urb->context;
209 struct tty_struct *tty = tty_port_tty_get(&port->port);
210 unsigned char *data = urb->transfer_buffer;
212 int status = urb->status;
213 struct keyspan_pda_private *priv;
214 priv = usb_get_serial_port_data(port);
223 /* this urb is terminated, clean up */
224 dbg("%s - urb shutting down with status: %d",
228 dbg("%s - nonzero urb status received: %d",
233 /* see if the message is data or a status interrupt */
236 /* rest of message is rx data */
237 if (urb->actual_length) {
238 tty_insert_flip_string(tty, data + 1,
239 urb->actual_length - 1);
240 tty_flip_buffer_push(tty);
244 /* status interrupt */
245 dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
247 case 1: /* modemline change */
249 case 2: /* tx unthrottle interrupt */
250 priv->tx_throttled = 0;
251 /* queue up a wakeup at scheduler time */
252 schedule_work(&priv->wakeup_work);
263 retval = usb_submit_urb(urb, GFP_ATOMIC);
266 "%s - usb_submit_urb failed with result %d",
273 static void keyspan_pda_rx_throttle(struct tty_struct *tty)
275 /* stop receiving characters. We just turn off the URB request, and
276 let chars pile up in the device. If we're doing hardware
277 flowcontrol, the device will signal the other end when its buffer
278 fills up. If we're doing XON/XOFF, this would be a good time to
279 send an XOFF, although it might make sense to foist that off
280 upon the device too. */
281 struct usb_serial_port *port = tty->driver_data;
282 dbg("keyspan_pda_rx_throttle port %d", port->number);
283 usb_kill_urb(port->interrupt_in_urb);
287 static void keyspan_pda_rx_unthrottle(struct tty_struct *tty)
289 struct usb_serial_port *port = tty->driver_data;
290 /* just restart the receive interrupt URB */
291 dbg("keyspan_pda_rx_unthrottle port %d", port->number);
292 port->interrupt_in_urb->dev = port->serial->dev;
293 if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC))
294 dbg(" usb_submit_urb(read urb) failed");
299 static speed_t keyspan_pda_setbaud(struct usb_serial *serial, speed_t baud)
336 bindex = 5; /* Default to 9600 */
340 /* rather than figure out how to sleep while waiting for this
341 to complete, I just use the "legacy" API. */
342 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
345 | USB_RECIP_INTERFACE
346 | USB_DIR_OUT, /* type */
358 static void keyspan_pda_break_ctl(struct tty_struct *tty, int break_state)
360 struct usb_serial_port *port = tty->driver_data;
361 struct usb_serial *serial = port->serial;
365 if (break_state == -1)
366 value = 1; /* start break */
368 value = 0; /* clear break */
369 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
371 USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
372 value, 0, NULL, 0, 2000);
374 dbg("%s - error %d from usb_control_msg",
376 /* there is something funky about this.. the TCSBRK that 'cu' performs
377 ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
378 seconds apart, but it feels like the break sent isn't as long as it
383 static void keyspan_pda_set_termios(struct tty_struct *tty,
384 struct usb_serial_port *port, struct ktermios *old_termios)
386 struct usb_serial *serial = port->serial;
389 /* cflag specifies lots of stuff: number of stop bits, parity, number
390 of data bits, baud. What can the device actually handle?:
391 CSTOPB (1 stop bit or 2)
394 There is minimal hw support for parity (a PSW bit seems to hold the
395 parity of whatever is in the accumulator). The UART either deals
396 with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
397 1 special, stop). So, with firmware changes, we could do:
399 8N2: 11 bit, extra bit always (mark?)
400 8[EOMS]1: 11 bit, extra bit is parity
401 7[EOMS]1: 10 bit, b0/b7 is parity
402 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
404 HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
407 For now, just do baud. */
409 speed = tty_get_baud_rate(tty);
410 speed = keyspan_pda_setbaud(serial, speed);
413 dbg("can't handle requested baud rate");
414 /* It hasn't changed so.. */
415 speed = tty_termios_baud_rate(old_termios);
417 /* Only speed can change so copy the old h/w parameters
418 then encode the new speed */
419 tty_termios_copy_hw(tty->termios, old_termios);
420 tty_encode_baud_rate(tty, speed, speed);
424 /* modem control pins: DTR and RTS are outputs and can be controlled.
425 DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
426 read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
428 static int keyspan_pda_get_modem_info(struct usb_serial *serial,
429 unsigned char *value)
433 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
435 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
436 0, 0, &data, 1, 2000);
443 static int keyspan_pda_set_modem_info(struct usb_serial *serial,
447 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
449 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
450 value, 0, NULL, 0, 2000);
454 static int keyspan_pda_tiocmget(struct tty_struct *tty, struct file *file)
456 struct usb_serial_port *port = tty->driver_data;
457 struct usb_serial *serial = port->serial;
459 unsigned char status;
462 rc = keyspan_pda_get_modem_info(serial, &status);
466 ((status & (1<<7)) ? TIOCM_DTR : 0) |
467 ((status & (1<<6)) ? TIOCM_CAR : 0) |
468 ((status & (1<<5)) ? TIOCM_RNG : 0) |
469 ((status & (1<<4)) ? TIOCM_DSR : 0) |
470 ((status & (1<<3)) ? TIOCM_CTS : 0) |
471 ((status & (1<<2)) ? TIOCM_RTS : 0);
475 static int keyspan_pda_tiocmset(struct tty_struct *tty, struct file *file,
476 unsigned int set, unsigned int clear)
478 struct usb_serial_port *port = tty->driver_data;
479 struct usb_serial *serial = port->serial;
481 unsigned char status;
483 rc = keyspan_pda_get_modem_info(serial, &status);
492 if (clear & TIOCM_RTS)
494 if (clear & TIOCM_DTR)
496 rc = keyspan_pda_set_modem_info(serial, status);
500 static int keyspan_pda_write(struct tty_struct *tty,
501 struct usb_serial_port *port, const unsigned char *buf, int count)
503 struct usb_serial *serial = port->serial;
504 int request_unthrottle = 0;
506 struct keyspan_pda_private *priv;
508 priv = usb_get_serial_port_data(port);
509 /* guess how much room is left in the device's ring buffer, and if we
510 want to send more than that, check first, updating our notion of
511 what is left. If our write will result in no room left, ask the
512 device to give us an interrupt when the room available rises above
513 a threshold, and hold off all writers (eventually, those using
514 select() or poll() too) until we receive that unthrottle interrupt.
515 Block if we can't write anything at all, otherwise write as much as
517 dbg("keyspan_pda_write(%d)", count);
519 dbg(" write request of 0 bytes");
523 /* we might block because of:
524 the TX urb is in-flight (wait until it completes)
525 the device is full (wait until it says there is room)
527 spin_lock_bh(&port->lock);
528 if (port->write_urb_busy || priv->tx_throttled) {
529 spin_unlock_bh(&port->lock);
532 port->write_urb_busy = 1;
533 spin_unlock_bh(&port->lock);
535 /* At this point the URB is in our control, nobody else can submit it
536 again (the only sudden transition was the one from EINPROGRESS to
537 finished). Also, the tx process is not throttled. So we are
540 count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
542 /* Check if we might overrun the Tx buffer. If so, ask the
543 device how much room it really has. This is done only on
544 scheduler time, since usb_control_msg() sleeps. */
545 if (count > priv->tx_room && !in_interrupt()) {
547 rc = usb_control_msg(serial->dev,
548 usb_rcvctrlpipe(serial->dev, 0),
550 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
552 0, /* value: 0 means "remaining room" */
558 dbg(" roomquery failed");
562 dbg(" roomquery returned 0 bytes");
563 rc = -EIO; /* device didn't return any data */
566 dbg(" roomquery says %d", room);
567 priv->tx_room = room;
569 if (count > priv->tx_room) {
570 /* we're about to completely fill the Tx buffer, so
571 we'll be throttled afterwards. */
572 count = priv->tx_room;
573 request_unthrottle = 1;
577 /* now transfer data */
578 memcpy(port->write_urb->transfer_buffer, buf, count);
579 /* send the data out the bulk port */
580 port->write_urb->transfer_buffer_length = count;
582 priv->tx_room -= count;
584 port->write_urb->dev = port->serial->dev;
585 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
587 dbg(" usb_submit_urb(write bulk) failed");
591 /* There wasn't any room left, so we are throttled until
592 the buffer empties a bit */
593 request_unthrottle = 1;
596 if (request_unthrottle) {
597 priv->tx_throttled = 1; /* block writers */
598 schedule_work(&priv->unthrottle_work);
604 port->write_urb_busy = 0;
609 static void keyspan_pda_write_bulk_callback(struct urb *urb)
611 struct usb_serial_port *port = urb->context;
612 struct keyspan_pda_private *priv;
614 port->write_urb_busy = 0;
615 priv = usb_get_serial_port_data(port);
617 /* queue up a wakeup at scheduler time */
618 schedule_work(&priv->wakeup_work);
622 static int keyspan_pda_write_room(struct tty_struct *tty)
624 struct usb_serial_port *port = tty->driver_data;
625 struct keyspan_pda_private *priv;
626 priv = usb_get_serial_port_data(port);
627 /* used by n_tty.c for processing of tabs and such. Giving it our
628 conservative guess is probably good enough, but needs testing by
629 running a console through the device. */
630 return priv->tx_room;
634 static int keyspan_pda_chars_in_buffer(struct tty_struct *tty)
636 struct usb_serial_port *port = tty->driver_data;
637 struct keyspan_pda_private *priv;
641 priv = usb_get_serial_port_data(port);
643 /* when throttled, return at least WAKEUP_CHARS to tell select() (via
644 n_tty.c:normal_poll() ) that we're not writeable. */
646 spin_lock_irqsave(&port->lock, flags);
647 if (port->write_urb_busy || priv->tx_throttled)
649 spin_unlock_irqrestore(&port->lock, flags);
654 static int keyspan_pda_open(struct tty_struct *tty,
655 struct usb_serial_port *port, struct file *filp)
657 struct usb_serial *serial = port->serial;
660 struct keyspan_pda_private *priv;
662 /* find out how much room is in the Tx ring */
663 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
665 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
673 dbg("%s - roomquery failed", __func__);
677 dbg("%s - roomquery returned 0 bytes", __func__);
681 priv = usb_get_serial_port_data(port);
682 priv->tx_room = room;
683 priv->tx_throttled = room ? 0 : 1;
685 /* the normal serial device seems to always turn on DTR and RTS here,
687 if (tty && (tty->termios->c_cflag & CBAUD))
688 keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2));
690 keyspan_pda_set_modem_info(serial, 0);
692 /*Start reading from the device*/
693 port->interrupt_in_urb->dev = serial->dev;
694 rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
696 dbg("%s - usb_submit_urb(read int) failed", __func__);
705 static void keyspan_pda_close(struct tty_struct *tty,
706 struct usb_serial_port *port, struct file *filp)
708 struct usb_serial *serial = port->serial;
711 /* the normal serial device seems to always shut
712 off DTR and RTS now */
713 if (tty->termios->c_cflag & HUPCL)
714 keyspan_pda_set_modem_info(serial, 0);
716 /* shutdown our bulk reads and writes */
717 usb_kill_urb(port->write_urb);
718 usb_kill_urb(port->interrupt_in_urb);
723 /* download the firmware to a "fake" device (pre-renumeration) */
724 static int keyspan_pda_fake_startup(struct usb_serial *serial)
728 const struct ihex_binrec *record;
729 const struct firmware *fw;
731 /* download the firmware here ... */
732 response = ezusb_set_reset(serial, 1);
736 else if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID)
737 fw_name = "keyspan_pda/keyspan_pda.fw";
740 else if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) ||
741 (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGRA_VENDOR_ID))
742 fw_name = "keyspan_pda/xircom_pgs.fw";
745 dev_err(&serial->dev->dev, "%s: unknown vendor, aborting.\n",
749 if (request_ihex_firmware(&fw, fw_name, &serial->dev->dev)) {
750 dev_err(&serial->dev->dev, "failed to load firmware \"%s\"\n",
754 record = (const struct ihex_binrec *)fw->data;
757 response = ezusb_writememory(serial, be32_to_cpu(record->addr),
758 (unsigned char *)record->data,
759 be16_to_cpu(record->len), 0xa0);
761 dev_err(&serial->dev->dev, "ezusb_writememory failed "
762 "for Keyspan PDA firmware (%d %04X %p %d)\n",
763 response, be32_to_cpu(record->addr),
764 record->data, be16_to_cpu(record->len));
767 record = ihex_next_binrec(record);
769 release_firmware(fw);
770 /* bring device out of reset. Renumeration will occur in a moment
771 and the new device will bind to the real driver */
772 response = ezusb_set_reset(serial, 0);
774 /* we want this device to fail to have a driver assigned to it. */
778 static int keyspan_pda_startup(struct usb_serial *serial)
781 struct keyspan_pda_private *priv;
783 /* allocate the private data structures for all ports. Well, for all
786 priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
788 return 1; /* error */
789 usb_set_serial_port_data(serial->port[0], priv);
790 init_waitqueue_head(&serial->port[0]->write_wait);
791 INIT_WORK(&priv->wakeup_work, keyspan_pda_wakeup_write);
792 INIT_WORK(&priv->unthrottle_work, keyspan_pda_request_unthrottle);
793 priv->serial = serial;
794 priv->port = serial->port[0];
798 static void keyspan_pda_shutdown(struct usb_serial *serial)
802 kfree(usb_get_serial_port_data(serial->port[0]));
806 static struct usb_serial_driver keyspan_pda_fake_device = {
808 .owner = THIS_MODULE,
809 .name = "keyspan_pda_pre",
811 .description = "Keyspan PDA - (prerenumeration)",
812 .usb_driver = &keyspan_pda_driver,
813 .id_table = id_table_fake,
815 .attach = keyspan_pda_fake_startup,
820 static struct usb_serial_driver xircom_pgs_fake_device = {
822 .owner = THIS_MODULE,
823 .name = "xircom_no_firm",
825 .description = "Xircom / Entregra PGS - (prerenumeration)",
826 .usb_driver = &keyspan_pda_driver,
827 .id_table = id_table_fake_xircom,
829 .attach = keyspan_pda_fake_startup,
833 static struct usb_serial_driver keyspan_pda_device = {
835 .owner = THIS_MODULE,
836 .name = "keyspan_pda",
838 .description = "Keyspan PDA",
839 .usb_driver = &keyspan_pda_driver,
840 .id_table = id_table_std,
842 .open = keyspan_pda_open,
843 .close = keyspan_pda_close,
844 .write = keyspan_pda_write,
845 .write_room = keyspan_pda_write_room,
846 .write_bulk_callback = keyspan_pda_write_bulk_callback,
847 .read_int_callback = keyspan_pda_rx_interrupt,
848 .chars_in_buffer = keyspan_pda_chars_in_buffer,
849 .throttle = keyspan_pda_rx_throttle,
850 .unthrottle = keyspan_pda_rx_unthrottle,
851 .set_termios = keyspan_pda_set_termios,
852 .break_ctl = keyspan_pda_break_ctl,
853 .tiocmget = keyspan_pda_tiocmget,
854 .tiocmset = keyspan_pda_tiocmset,
855 .attach = keyspan_pda_startup,
856 .shutdown = keyspan_pda_shutdown,
860 static int __init keyspan_pda_init(void)
863 retval = usb_serial_register(&keyspan_pda_device);
865 goto failed_pda_register;
867 retval = usb_serial_register(&keyspan_pda_fake_device);
869 goto failed_pda_fake_register;
872 retval = usb_serial_register(&xircom_pgs_fake_device);
874 goto failed_xircom_register;
876 retval = usb_register(&keyspan_pda_driver);
878 goto failed_usb_register;
879 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
884 usb_serial_deregister(&xircom_pgs_fake_device);
885 failed_xircom_register:
888 usb_serial_deregister(&keyspan_pda_fake_device);
891 failed_pda_fake_register:
893 usb_serial_deregister(&keyspan_pda_device);
899 static void __exit keyspan_pda_exit(void)
901 usb_deregister(&keyspan_pda_driver);
902 usb_serial_deregister(&keyspan_pda_device);
904 usb_serial_deregister(&keyspan_pda_fake_device);
907 usb_serial_deregister(&xircom_pgs_fake_device);
912 module_init(keyspan_pda_init);
913 module_exit(keyspan_pda_exit);
915 MODULE_AUTHOR(DRIVER_AUTHOR);
916 MODULE_DESCRIPTION(DRIVER_DESC);
917 MODULE_LICENSE("GPL");
919 module_param(debug, bool, S_IRUGO | S_IWUSR);
920 MODULE_PARM_DESC(debug, "Debug enabled or not");