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 driver
16 * cleaned up the Xircom support. Added ids for Entregra device which is
17 * the same as the Xircom device. Enabled the code to be compiled for
18 * either Xircom or Keyspan devices.
20 * (08/11/2001) Cristian M. Craciunescu
21 * support for Xircom PGSDB9
24 * switched from using spinlock to a semaphore, which fixes lots of problems.
27 * Identify version on module load.
29 * (11/01/2000) Adam J. Richter
30 * usb_device_id table support
33 * Fixed bug with urb->dev not being set properly, now that the usb
37 * Added locks for SMP safeness.
38 * Fixed MOD_INC and MOD_DEC logic and the ability to open a port more
41 * (07/20/2000) borchers
42 * - keyspan_pda_write no longer sleeps if it is called on interrupt time;
43 * PPP and the line discipline with stty echo on can call write on
44 * interrupt time and this would cause an oops if write slept
45 * - if keyspan_pda_write is in an interrupt, it will not call
46 * usb_control_msg (which sleeps) to query the room in the device
47 * buffer, it simply uses the current room value it has
48 * - if the urb is busy or if it is throttled keyspan_pda_write just
49 * returns 0, rather than sleeping to wait for this to change; the
50 * write_chan code in n_tty.c will sleep if needed before calling
51 * keyspan_pda_write again
52 * - if the device needs to be unthrottled, write now queues up the
53 * call to usb_control_msg (which sleeps) to unthrottle the device
54 * - the wakeups from keyspan_pda_write_bulk_callback are queued rather
55 * than done directly from the callback to avoid the race in write_chan
56 * - keyspan_pda_chars_in_buffer also indicates its buffer is full if the
57 * urb status is -EINPROGRESS, meaning it cannot write at the moment
60 * Added module_init and module_exit functions to handle the fact that this
61 * driver is a loadable module now.
64 * Split driver up into device specific pieces.
69 #include <linux/config.h>
70 #include <linux/kernel.h>
71 #include <linux/errno.h>
72 #include <linux/init.h>
73 #include <linux/slab.h>
74 #include <linux/tty.h>
75 #include <linux/tty_driver.h>
76 #include <linux/tty_flip.h>
77 #include <linux/module.h>
78 #include <linux/spinlock.h>
79 #include <linux/workqueue.h>
80 #include <asm/uaccess.h>
81 #include <linux/usb.h>
85 struct ezusb_hex_record {
91 /* make a simple define to handle if we are compiling keyspan_pda or xircom support */
92 #if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE)
97 #if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE)
104 #include "keyspan_pda_fw.h"
108 #include "xircom_pgs_fw.h"
111 #include "usb-serial.h"
114 * Version Information
116 #define DRIVER_VERSION "v1.1"
117 #define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>"
118 #define DRIVER_DESC "USB Keyspan PDA Converter driver"
120 struct keyspan_pda_private {
123 struct work_struct wakeup_work;
124 struct work_struct unthrottle_work;
128 #define KEYSPAN_VENDOR_ID 0x06cd
129 #define KEYSPAN_PDA_FAKE_ID 0x0103
130 #define KEYSPAN_PDA_ID 0x0104 /* no clue */
132 /* For Xircom PGSDB9 and older Entregra version of the same device */
133 #define XIRCOM_VENDOR_ID 0x085a
134 #define XIRCOM_FAKE_ID 0x8027
135 #define ENTREGRA_VENDOR_ID 0x1645
136 #define ENTREGRA_FAKE_ID 0x8093
138 static struct usb_device_id id_table_combined [] = {
140 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
143 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
144 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
146 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
147 { } /* Terminating entry */
150 MODULE_DEVICE_TABLE (usb, id_table_combined);
152 static struct usb_driver keyspan_pda_driver = {
153 .owner = THIS_MODULE,
154 .name = "keyspan_pda",
155 .probe = usb_serial_probe,
156 .disconnect = usb_serial_disconnect,
157 .id_table = id_table_combined,
161 static struct usb_device_id id_table_std [] = {
162 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
163 { } /* Terminating entry */
167 static struct usb_device_id id_table_fake [] = {
168 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
169 { } /* Terminating entry */
174 static struct usb_device_id id_table_fake_xircom [] = {
175 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
176 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
181 static void keyspan_pda_wakeup_write( struct usb_serial_port *port )
184 struct tty_struct *tty = port->tty;
186 /* wake up port processes */
187 wake_up_interruptible( &port->write_wait );
189 /* wake up line discipline */
193 static void keyspan_pda_request_unthrottle( struct usb_serial *serial )
197 dbg(" request_unthrottle");
198 /* ask the device to tell us when the tx buffer becomes
199 sufficiently empty */
200 result = usb_control_msg(serial->dev,
201 usb_sndctrlpipe(serial->dev, 0),
202 7, /* request_unthrottle */
203 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
205 16, /* value: threshold */
211 dbg("%s - error %d from usb_control_msg",
212 __FUNCTION__, result);
216 static void keyspan_pda_rx_interrupt (struct urb *urb, struct pt_regs *regs)
218 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
219 struct tty_struct *tty = port->tty;
220 unsigned char *data = urb->transfer_buffer;
223 struct keyspan_pda_private *priv;
224 priv = usb_get_serial_port_data(port);
226 switch (urb->status) {
233 /* this urb is terminated, clean up */
234 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
237 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
241 /* see if the message is data or a status interrupt */
244 /* rest of message is rx data */
245 if (urb->actual_length) {
246 for (i = 1; i < urb->actual_length ; ++i) {
247 tty_insert_flip_char(tty, data[i], 0);
249 tty_flip_buffer_push(tty);
253 /* status interrupt */
254 dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
256 case 1: /* modemline change */
258 case 2: /* tx unthrottle interrupt */
259 priv->tx_throttled = 0;
260 /* queue up a wakeup at scheduler time */
261 schedule_work(&priv->wakeup_work);
272 status = usb_submit_urb (urb, GFP_ATOMIC);
274 err ("%s - usb_submit_urb failed with result %d",
275 __FUNCTION__, status);
279 static void keyspan_pda_rx_throttle (struct usb_serial_port *port)
281 /* stop receiving characters. We just turn off the URB request, and
282 let chars pile up in the device. If we're doing hardware
283 flowcontrol, the device will signal the other end when its buffer
284 fills up. If we're doing XON/XOFF, this would be a good time to
285 send an XOFF, although it might make sense to foist that off
286 upon the device too. */
288 dbg("keyspan_pda_rx_throttle port %d", port->number);
289 usb_kill_urb(port->interrupt_in_urb);
293 static void keyspan_pda_rx_unthrottle (struct usb_serial_port *port)
295 /* just restart the receive interrupt URB */
296 dbg("keyspan_pda_rx_unthrottle port %d", port->number);
297 port->interrupt_in_urb->dev = port->serial->dev;
298 if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC))
299 dbg(" usb_submit_urb(read urb) failed");
304 static int keyspan_pda_setbaud (struct usb_serial *serial, int baud)
310 case 110: bindex = 0; break;
311 case 300: bindex = 1; break;
312 case 1200: bindex = 2; break;
313 case 2400: bindex = 3; break;
314 case 4800: bindex = 4; break;
315 case 9600: bindex = 5; break;
316 case 19200: bindex = 6; break;
317 case 38400: bindex = 7; break;
318 case 57600: bindex = 8; break;
319 case 115200: bindex = 9; break;
320 default: return -EINVAL;
323 /* rather than figure out how to sleep while waiting for this
324 to complete, I just use the "legacy" API. */
325 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
328 | USB_RECIP_INTERFACE
329 | USB_DIR_OUT, /* type */
339 static void keyspan_pda_break_ctl (struct usb_serial_port *port, int break_state)
341 struct usb_serial *serial = port->serial;
345 if (break_state == -1)
346 value = 1; /* start break */
348 value = 0; /* clear break */
349 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
351 USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
352 value, 0, NULL, 0, 2000);
354 dbg("%s - error %d from usb_control_msg",
355 __FUNCTION__, result);
356 /* there is something funky about this.. the TCSBRK that 'cu' performs
357 ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
358 seconds apart, but it feels like the break sent isn't as long as it
363 static void keyspan_pda_set_termios (struct usb_serial_port *port,
364 struct termios *old_termios)
366 struct usb_serial *serial = port->serial;
367 unsigned int cflag = port->tty->termios->c_cflag;
369 /* cflag specifies lots of stuff: number of stop bits, parity, number
370 of data bits, baud. What can the device actually handle?:
371 CSTOPB (1 stop bit or 2)
374 There is minimal hw support for parity (a PSW bit seems to hold the
375 parity of whatever is in the accumulator). The UART either deals
376 with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
377 1 special, stop). So, with firmware changes, we could do:
379 8N2: 11 bit, extra bit always (mark?)
380 8[EOMS]1: 11 bit, extra bit is parity
381 7[EOMS]1: 10 bit, b0/b7 is parity
382 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
384 HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
387 For now, just do baud. */
389 switch (cflag & CBAUD) {
390 /* we could support more values here, just need to calculate
391 the necessary divisors in the firmware. <asm/termbits.h>
392 has the Bnnn constants. */
393 case B110: keyspan_pda_setbaud(serial, 110); break;
394 case B300: keyspan_pda_setbaud(serial, 300); break;
395 case B1200: keyspan_pda_setbaud(serial, 1200); break;
396 case B2400: keyspan_pda_setbaud(serial, 2400); break;
397 case B4800: keyspan_pda_setbaud(serial, 4800); break;
398 case B9600: keyspan_pda_setbaud(serial, 9600); break;
399 case B19200: keyspan_pda_setbaud(serial, 19200); break;
400 case B38400: keyspan_pda_setbaud(serial, 38400); break;
401 case B57600: keyspan_pda_setbaud(serial, 57600); break;
402 case B115200: keyspan_pda_setbaud(serial, 115200); break;
403 default: dbg("can't handle requested baud rate"); break;
408 /* modem control pins: DTR and RTS are outputs and can be controlled.
409 DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
410 read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
412 static int keyspan_pda_get_modem_info(struct usb_serial *serial,
413 unsigned char *value)
417 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
419 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
420 0, 0, &data, 1, 2000);
427 static int keyspan_pda_set_modem_info(struct usb_serial *serial,
431 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
433 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
434 value, 0, NULL, 0, 2000);
438 static int keyspan_pda_tiocmget(struct usb_serial_port *port, struct file *file)
440 struct usb_serial *serial = port->serial;
442 unsigned char status;
445 rc = keyspan_pda_get_modem_info(serial, &status);
449 ((status & (1<<7)) ? TIOCM_DTR : 0) |
450 ((status & (1<<6)) ? TIOCM_CAR : 0) |
451 ((status & (1<<5)) ? TIOCM_RNG : 0) |
452 ((status & (1<<4)) ? TIOCM_DSR : 0) |
453 ((status & (1<<3)) ? TIOCM_CTS : 0) |
454 ((status & (1<<2)) ? TIOCM_RTS : 0);
458 static int keyspan_pda_tiocmset(struct usb_serial_port *port, struct file *file,
459 unsigned int set, unsigned int clear)
461 struct usb_serial *serial = port->serial;
463 unsigned char status;
465 rc = keyspan_pda_get_modem_info(serial, &status);
474 if (clear & TIOCM_RTS)
476 if (clear & TIOCM_DTR)
478 rc = keyspan_pda_set_modem_info(serial, status);
482 static int keyspan_pda_ioctl(struct usb_serial_port *port, struct file *file,
483 unsigned int cmd, unsigned long arg)
487 /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
490 /* return count of modemline transitions */
497 static int keyspan_pda_write(struct usb_serial_port *port,
498 const unsigned char *buf, int count)
500 struct usb_serial *serial = port->serial;
501 int request_unthrottle = 0;
503 struct keyspan_pda_private *priv;
505 priv = usb_get_serial_port_data(port);
506 /* guess how much room is left in the device's ring buffer, and if we
507 want to send more than that, check first, updating our notion of
508 what is left. If our write will result in no room left, ask the
509 device to give us an interrupt when the room available rises above
510 a threshold, and hold off all writers (eventually, those using
511 select() or poll() too) until we receive that unthrottle interrupt.
512 Block if we can't write anything at all, otherwise write as much as
514 dbg("keyspan_pda_write(%d)",count);
516 dbg(" write request of 0 bytes");
520 /* we might block because of:
521 the TX urb is in-flight (wait until it completes)
522 the device is full (wait until it says there is room)
524 spin_lock(&port->lock);
525 if (port->write_urb_busy || priv->tx_throttled) {
526 spin_unlock(&port->lock);
529 port->write_urb_busy = 1;
530 spin_unlock(&port->lock);
532 /* At this point the URB is in our control, nobody else can submit it
533 again (the only sudden transition was the one from EINPROGRESS to
534 finished). Also, the tx process is not throttled. So we are
537 count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
539 /* Check if we might overrun the Tx buffer. If so, ask the
540 device how much room it really has. This is done only on
541 scheduler time, since usb_control_msg() sleeps. */
542 if (count > priv->tx_room && !in_interrupt()) {
544 rc = usb_control_msg(serial->dev,
545 usb_rcvctrlpipe(serial->dev, 0),
547 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
549 0, /* value: 0 means "remaining room" */
555 dbg(" roomquery failed");
559 dbg(" roomquery returned 0 bytes");
560 rc = -EIO; /* device didn't return any data */
563 dbg(" roomquery says %d", room);
564 priv->tx_room = room;
566 if (count > priv->tx_room) {
567 /* we're about to completely fill the Tx buffer, so
568 we'll be throttled afterwards. */
569 count = priv->tx_room;
570 request_unthrottle = 1;
574 /* now transfer data */
575 memcpy (port->write_urb->transfer_buffer, buf, count);
576 /* send the data out the bulk port */
577 port->write_urb->transfer_buffer_length = count;
579 priv->tx_room -= count;
581 port->write_urb->dev = port->serial->dev;
582 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
584 dbg(" usb_submit_urb(write bulk) failed");
589 /* There wasn't any room left, so we are throttled until
590 the buffer empties a bit */
591 request_unthrottle = 1;
594 if (request_unthrottle) {
595 priv->tx_throttled = 1; /* block writers */
596 schedule_work(&priv->unthrottle_work);
602 port->write_urb_busy = 0;
607 static void keyspan_pda_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
609 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
610 struct keyspan_pda_private *priv;
612 port->write_urb_busy = 0;
613 priv = usb_get_serial_port_data(port);
615 /* queue up a wakeup at scheduler time */
616 schedule_work(&priv->wakeup_work);
620 static int keyspan_pda_write_room (struct usb_serial_port *port)
622 struct keyspan_pda_private *priv;
624 priv = usb_get_serial_port_data(port);
626 /* used by n_tty.c for processing of tabs and such. Giving it our
627 conservative guess is probably good enough, but needs testing by
628 running a console through the device. */
630 return (priv->tx_room);
634 static int keyspan_pda_chars_in_buffer (struct usb_serial_port *port)
636 struct keyspan_pda_private *priv;
638 priv = usb_get_serial_port_data(port);
640 /* when throttled, return at least WAKEUP_CHARS to tell select() (via
641 n_tty.c:normal_poll() ) that we're not writeable. */
642 if (port->write_urb_busy || priv->tx_throttled)
648 static int keyspan_pda_open (struct usb_serial_port *port, struct file *filp)
650 struct usb_serial *serial = port->serial;
653 struct keyspan_pda_private *priv;
655 /* find out how much room is in the Tx ring */
656 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
658 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
666 dbg("%s - roomquery failed", __FUNCTION__);
670 dbg("%s - roomquery returned 0 bytes", __FUNCTION__);
674 priv = usb_get_serial_port_data(port);
675 priv->tx_room = room;
676 priv->tx_throttled = room ? 0 : 1;
678 /* the normal serial device seems to always turn on DTR and RTS here,
680 if (port->tty->termios->c_cflag & CBAUD)
681 keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2) );
683 keyspan_pda_set_modem_info(serial, 0);
685 /*Start reading from the device*/
686 port->interrupt_in_urb->dev = serial->dev;
687 rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
689 dbg("%s - usb_submit_urb(read int) failed", __FUNCTION__);
698 static void keyspan_pda_close(struct usb_serial_port *port, struct file *filp)
700 struct usb_serial *serial = port->serial;
703 /* the normal serial device seems to always shut off DTR and RTS now */
704 if (port->tty->termios->c_cflag & HUPCL)
705 keyspan_pda_set_modem_info(serial, 0);
707 /* shutdown our bulk reads and writes */
708 usb_kill_urb(port->write_urb);
709 usb_kill_urb(port->interrupt_in_urb);
714 /* download the firmware to a "fake" device (pre-renumeration) */
715 static int keyspan_pda_fake_startup (struct usb_serial *serial)
718 const struct ezusb_hex_record *record = NULL;
720 /* download the firmware here ... */
721 response = ezusb_set_reset(serial, 1);
724 if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID)
725 record = &keyspan_pda_firmware[0];
728 if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) ||
729 (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGRA_VENDOR_ID))
730 record = &xircom_pgs_firmware[0];
732 if (record == NULL) {
733 err("%s: unknown vendor, aborting.", __FUNCTION__);
737 while(record->address != 0xffff) {
738 response = ezusb_writememory(serial, record->address,
739 (unsigned char *)record->data,
740 record->data_size, 0xa0);
742 err("ezusb_writememory failed for Keyspan PDA "
743 "firmware (%d %04X %p %d)",
745 record->address, record->data, record->data_size);
750 /* bring device out of reset. Renumeration will occur in a moment
751 and the new device will bind to the real driver */
752 response = ezusb_set_reset(serial, 0);
754 /* we want this device to fail to have a driver assigned to it. */
758 static int keyspan_pda_startup (struct usb_serial *serial)
761 struct keyspan_pda_private *priv;
763 /* allocate the private data structures for all ports. Well, for all
766 priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
768 return (1); /* error */
769 usb_set_serial_port_data(serial->port[0], priv);
770 init_waitqueue_head(&serial->port[0]->write_wait);
771 INIT_WORK(&priv->wakeup_work, (void *)keyspan_pda_wakeup_write,
772 (void *)(serial->port[0]));
773 INIT_WORK(&priv->unthrottle_work,
774 (void *)keyspan_pda_request_unthrottle,
779 static void keyspan_pda_shutdown (struct usb_serial *serial)
781 dbg("%s", __FUNCTION__);
783 kfree(usb_get_serial_port_data(serial->port[0]));
787 static struct usb_serial_driver keyspan_pda_fake_device = {
789 .owner = THIS_MODULE,
790 .name = "keyspan_pda_pre",
792 .description = "Keyspan PDA - (prerenumeration)",
793 .id_table = id_table_fake,
794 .num_interrupt_in = NUM_DONT_CARE,
795 .num_bulk_in = NUM_DONT_CARE,
796 .num_bulk_out = NUM_DONT_CARE,
798 .attach = keyspan_pda_fake_startup,
803 static struct usb_serial_driver xircom_pgs_fake_device = {
805 .owner = THIS_MODULE,
806 .name = "xircom_no_firm",
808 .description = "Xircom / Entregra PGS - (prerenumeration)",
809 .id_table = id_table_fake_xircom,
810 .num_interrupt_in = NUM_DONT_CARE,
811 .num_bulk_in = NUM_DONT_CARE,
812 .num_bulk_out = NUM_DONT_CARE,
814 .attach = keyspan_pda_fake_startup,
818 static struct usb_serial_driver keyspan_pda_device = {
820 .owner = THIS_MODULE,
821 .name = "keyspan_pda",
823 .description = "Keyspan PDA",
824 .id_table = id_table_std,
825 .num_interrupt_in = 1,
829 .open = keyspan_pda_open,
830 .close = keyspan_pda_close,
831 .write = keyspan_pda_write,
832 .write_room = keyspan_pda_write_room,
833 .write_bulk_callback = keyspan_pda_write_bulk_callback,
834 .read_int_callback = keyspan_pda_rx_interrupt,
835 .chars_in_buffer = keyspan_pda_chars_in_buffer,
836 .throttle = keyspan_pda_rx_throttle,
837 .unthrottle = keyspan_pda_rx_unthrottle,
838 .ioctl = keyspan_pda_ioctl,
839 .set_termios = keyspan_pda_set_termios,
840 .break_ctl = keyspan_pda_break_ctl,
841 .tiocmget = keyspan_pda_tiocmget,
842 .tiocmset = keyspan_pda_tiocmset,
843 .attach = keyspan_pda_startup,
844 .shutdown = keyspan_pda_shutdown,
848 static int __init keyspan_pda_init (void)
851 retval = usb_serial_register(&keyspan_pda_device);
853 goto failed_pda_register;
855 retval = usb_serial_register(&keyspan_pda_fake_device);
857 goto failed_pda_fake_register;
860 retval = usb_serial_register(&xircom_pgs_fake_device);
862 goto failed_xircom_register;
864 retval = usb_register(&keyspan_pda_driver);
866 goto failed_usb_register;
867 info(DRIVER_DESC " " DRIVER_VERSION);
871 usb_serial_deregister(&xircom_pgs_fake_device);
872 failed_xircom_register:
875 usb_serial_deregister(&keyspan_pda_fake_device);
878 failed_pda_fake_register:
880 usb_serial_deregister(&keyspan_pda_device);
886 static void __exit keyspan_pda_exit (void)
888 usb_deregister (&keyspan_pda_driver);
889 usb_serial_deregister (&keyspan_pda_device);
891 usb_serial_deregister (&keyspan_pda_fake_device);
894 usb_serial_deregister (&xircom_pgs_fake_device);
899 module_init(keyspan_pda_init);
900 module_exit(keyspan_pda_exit);
902 MODULE_AUTHOR( DRIVER_AUTHOR );
903 MODULE_DESCRIPTION( DRIVER_DESC );
904 MODULE_LICENSE("GPL");
906 module_param(debug, bool, S_IRUGO | S_IWUSR);
907 MODULE_PARM_DESC(debug, "Debug enabled or not");