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,
160 static struct usb_device_id id_table_std [] = {
161 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
162 { } /* Terminating entry */
166 static struct usb_device_id id_table_fake [] = {
167 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
168 { } /* Terminating entry */
173 static struct usb_device_id id_table_fake_xircom [] = {
174 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
175 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
180 static void keyspan_pda_wakeup_write( struct usb_serial_port *port )
183 struct tty_struct *tty = port->tty;
185 /* wake up port processes */
186 wake_up_interruptible( &port->write_wait );
188 /* wake up line discipline */
189 if( (tty->flags & (1 << TTY_DO_WRITE_WAKEUP))
190 && tty->ldisc.write_wakeup )
191 (tty->ldisc.write_wakeup)(tty);
193 /* wake up other tty processes */
194 wake_up_interruptible( &tty->write_wait );
195 /* For 2.2.16 backport -- wake_up_interruptible( &tty->poll_wait ); */
198 static void keyspan_pda_request_unthrottle( struct usb_serial *serial )
202 dbg(" request_unthrottle");
203 /* ask the device to tell us when the tx buffer becomes
204 sufficiently empty */
205 result = usb_control_msg(serial->dev,
206 usb_sndctrlpipe(serial->dev, 0),
207 7, /* request_unthrottle */
208 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
210 16, /* value: threshold */
216 dbg("%s - error %d from usb_control_msg",
217 __FUNCTION__, result);
221 static void keyspan_pda_rx_interrupt (struct urb *urb, struct pt_regs *regs)
223 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
224 struct tty_struct *tty = port->tty;
225 unsigned char *data = urb->transfer_buffer;
228 struct keyspan_pda_private *priv;
229 priv = usb_get_serial_port_data(port);
231 switch (urb->status) {
238 /* this urb is terminated, clean up */
239 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
242 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
246 /* see if the message is data or a status interrupt */
249 /* rest of message is rx data */
250 if (urb->actual_length) {
251 for (i = 1; i < urb->actual_length ; ++i) {
252 tty_insert_flip_char(tty, data[i], 0);
254 tty_flip_buffer_push(tty);
258 /* status interrupt */
259 dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
261 case 1: /* modemline change */
263 case 2: /* tx unthrottle interrupt */
264 priv->tx_throttled = 0;
265 /* queue up a wakeup at scheduler time */
266 schedule_work(&priv->wakeup_work);
277 status = usb_submit_urb (urb, GFP_ATOMIC);
279 err ("%s - usb_submit_urb failed with result %d",
280 __FUNCTION__, status);
284 static void keyspan_pda_rx_throttle (struct usb_serial_port *port)
286 /* stop receiving characters. We just turn off the URB request, and
287 let chars pile up in the device. If we're doing hardware
288 flowcontrol, the device will signal the other end when its buffer
289 fills up. If we're doing XON/XOFF, this would be a good time to
290 send an XOFF, although it might make sense to foist that off
291 upon the device too. */
293 dbg("keyspan_pda_rx_throttle port %d", port->number);
294 usb_unlink_urb(port->interrupt_in_urb);
298 static void keyspan_pda_rx_unthrottle (struct usb_serial_port *port)
300 /* just restart the receive interrupt URB */
301 dbg("keyspan_pda_rx_unthrottle port %d", port->number);
302 port->interrupt_in_urb->dev = port->serial->dev;
303 if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC))
304 dbg(" usb_submit_urb(read urb) failed");
309 static int keyspan_pda_setbaud (struct usb_serial *serial, int baud)
315 case 110: bindex = 0; break;
316 case 300: bindex = 1; break;
317 case 1200: bindex = 2; break;
318 case 2400: bindex = 3; break;
319 case 4800: bindex = 4; break;
320 case 9600: bindex = 5; break;
321 case 19200: bindex = 6; break;
322 case 38400: bindex = 7; break;
323 case 57600: bindex = 8; break;
324 case 115200: bindex = 9; break;
325 default: return -EINVAL;
328 /* rather than figure out how to sleep while waiting for this
329 to complete, I just use the "legacy" API. */
330 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
333 | USB_RECIP_INTERFACE
334 | USB_DIR_OUT, /* type */
344 static void keyspan_pda_break_ctl (struct usb_serial_port *port, int break_state)
346 struct usb_serial *serial = port->serial;
350 if (break_state == -1)
351 value = 1; /* start break */
353 value = 0; /* clear break */
354 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
356 USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
357 value, 0, NULL, 0, 2*HZ);
359 dbg("%s - error %d from usb_control_msg",
360 __FUNCTION__, result);
361 /* there is something funky about this.. the TCSBRK that 'cu' performs
362 ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
363 seconds apart, but it feels like the break sent isn't as long as it
368 static void keyspan_pda_set_termios (struct usb_serial_port *port,
369 struct termios *old_termios)
371 struct usb_serial *serial = port->serial;
372 unsigned int cflag = port->tty->termios->c_cflag;
374 /* cflag specifies lots of stuff: number of stop bits, parity, number
375 of data bits, baud. What can the device actually handle?:
376 CSTOPB (1 stop bit or 2)
379 There is minimal hw support for parity (a PSW bit seems to hold the
380 parity of whatever is in the accumulator). The UART either deals
381 with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
382 1 special, stop). So, with firmware changes, we could do:
384 8N2: 11 bit, extra bit always (mark?)
385 8[EOMS]1: 11 bit, extra bit is parity
386 7[EOMS]1: 10 bit, b0/b7 is parity
387 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
389 HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
392 For now, just do baud. */
394 switch (cflag & CBAUD) {
395 /* we could support more values here, just need to calculate
396 the necessary divisors in the firmware. <asm/termbits.h>
397 has the Bnnn constants. */
398 case B110: keyspan_pda_setbaud(serial, 110); break;
399 case B300: keyspan_pda_setbaud(serial, 300); break;
400 case B1200: keyspan_pda_setbaud(serial, 1200); break;
401 case B2400: keyspan_pda_setbaud(serial, 2400); break;
402 case B4800: keyspan_pda_setbaud(serial, 4800); break;
403 case B9600: keyspan_pda_setbaud(serial, 9600); break;
404 case B19200: keyspan_pda_setbaud(serial, 19200); break;
405 case B38400: keyspan_pda_setbaud(serial, 38400); break;
406 case B57600: keyspan_pda_setbaud(serial, 57600); break;
407 case B115200: keyspan_pda_setbaud(serial, 115200); break;
408 default: dbg("can't handle requested baud rate"); break;
413 /* modem control pins: DTR and RTS are outputs and can be controlled.
414 DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
415 read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
417 static int keyspan_pda_get_modem_info(struct usb_serial *serial,
418 unsigned char *value)
422 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
424 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
425 0, 0, &data, 1, 2*HZ);
432 static int keyspan_pda_set_modem_info(struct usb_serial *serial,
436 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
438 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
439 value, 0, NULL, 0, 2*HZ);
443 static int keyspan_pda_tiocmget(struct usb_serial_port *port, struct file *file)
445 struct usb_serial *serial = port->serial;
447 unsigned char status;
450 rc = keyspan_pda_get_modem_info(serial, &status);
454 ((status & (1<<7)) ? TIOCM_DTR : 0) |
455 ((status & (1<<6)) ? TIOCM_CAR : 0) |
456 ((status & (1<<5)) ? TIOCM_RNG : 0) |
457 ((status & (1<<4)) ? TIOCM_DSR : 0) |
458 ((status & (1<<3)) ? TIOCM_CTS : 0) |
459 ((status & (1<<2)) ? TIOCM_RTS : 0);
463 static int keyspan_pda_tiocmset(struct usb_serial_port *port, struct file *file,
464 unsigned int set, unsigned int clear)
466 struct usb_serial *serial = port->serial;
468 unsigned char status;
470 rc = keyspan_pda_get_modem_info(serial, &status);
479 if (clear & TIOCM_RTS)
481 if (clear & TIOCM_DTR)
483 rc = keyspan_pda_set_modem_info(serial, status);
487 static int keyspan_pda_ioctl(struct usb_serial_port *port, struct file *file,
488 unsigned int cmd, unsigned long arg)
492 /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
495 /* return count of modemline transitions */
502 static int keyspan_pda_write(struct usb_serial_port *port, int from_user,
503 const unsigned char *buf, int count)
505 struct usb_serial *serial = port->serial;
506 int request_unthrottle = 0;
508 struct keyspan_pda_private *priv;
510 priv = usb_get_serial_port_data(port);
511 /* guess how much room is left in the device's ring buffer, and if we
512 want to send more than that, check first, updating our notion of
513 what is left. If our write will result in no room left, ask the
514 device to give us an interrupt when the room available rises above
515 a threshold, and hold off all writers (eventually, those using
516 select() or poll() too) until we receive that unthrottle interrupt.
517 Block if we can't write anything at all, otherwise write as much as
519 dbg("keyspan_pda_write(%d)",count);
521 dbg(" write request of 0 bytes");
525 /* we might block because of:
526 the TX urb is in-flight (wait until it completes)
527 the device is full (wait until it says there is room)
529 if (port->write_urb->status == -EINPROGRESS || priv->tx_throttled ) {
533 /* At this point the URB is in our control, nobody else can submit it
534 again (the only sudden transition was the one from EINPROGRESS to
535 finished). Also, the tx process is not throttled. So we are
538 count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
540 /* Check if we might overrun the Tx buffer. If so, ask the
541 device how much room it really has. This is done only on
542 scheduler time, since usb_control_msg() sleeps. */
543 if (count > priv->tx_room && !in_interrupt()) {
545 rc = usb_control_msg(serial->dev,
546 usb_rcvctrlpipe(serial->dev, 0),
548 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
550 0, /* value: 0 means "remaining room" */
556 dbg(" roomquery failed");
560 dbg(" roomquery returned 0 bytes");
561 rc = -EIO; /* device didn't return any data */
564 dbg(" roomquery says %d", room);
565 priv->tx_room = room;
567 if (count > priv->tx_room) {
568 /* we're about to completely fill the Tx buffer, so
569 we'll be throttled afterwards. */
570 count = priv->tx_room;
571 request_unthrottle = 1;
575 /* now transfer data */
577 if( copy_from_user(port->write_urb->transfer_buffer,
584 memcpy (port->write_urb->transfer_buffer, buf, count);
586 /* send the data out the bulk port */
587 port->write_urb->transfer_buffer_length = count;
589 priv->tx_room -= count;
591 port->write_urb->dev = port->serial->dev;
592 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
594 dbg(" usb_submit_urb(write bulk) failed");
599 /* There wasn't any room left, so we are throttled until
600 the buffer empties a bit */
601 request_unthrottle = 1;
604 if (request_unthrottle) {
605 priv->tx_throttled = 1; /* block writers */
606 schedule_work(&priv->unthrottle_work);
615 static void keyspan_pda_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
617 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
618 struct keyspan_pda_private *priv;
620 priv = usb_get_serial_port_data(port);
622 /* queue up a wakeup at scheduler time */
623 schedule_work(&priv->wakeup_work);
627 static int keyspan_pda_write_room (struct usb_serial_port *port)
629 struct keyspan_pda_private *priv;
631 priv = usb_get_serial_port_data(port);
633 /* used by n_tty.c for processing of tabs and such. Giving it our
634 conservative guess is probably good enough, but needs testing by
635 running a console through the device. */
637 return (priv->tx_room);
641 static int keyspan_pda_chars_in_buffer (struct usb_serial_port *port)
643 struct keyspan_pda_private *priv;
645 priv = usb_get_serial_port_data(port);
647 /* when throttled, return at least WAKEUP_CHARS to tell select() (via
648 n_tty.c:normal_poll() ) that we're not writeable. */
649 if( port->write_urb->status == -EINPROGRESS || priv->tx_throttled )
655 static int keyspan_pda_open (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", __FUNCTION__);
677 dbg("%s - roomquery returned 0 bytes", __FUNCTION__);
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 (port->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", __FUNCTION__);
705 static void keyspan_pda_close(struct usb_serial_port *port, struct file *filp)
707 struct usb_serial *serial = port->serial;
710 /* the normal serial device seems to always shut off DTR and RTS now */
711 if (port->tty->termios->c_cflag & HUPCL)
712 keyspan_pda_set_modem_info(serial, 0);
714 /* shutdown our bulk reads and writes */
715 usb_unlink_urb (port->write_urb);
716 usb_unlink_urb (port->interrupt_in_urb);
721 /* download the firmware to a "fake" device (pre-renumeration) */
722 static int keyspan_pda_fake_startup (struct usb_serial *serial)
725 const struct ezusb_hex_record *record = NULL;
727 /* download the firmware here ... */
728 response = ezusb_set_reset(serial, 1);
731 if (serial->dev->descriptor.idVendor == KEYSPAN_VENDOR_ID)
732 record = &keyspan_pda_firmware[0];
735 if ((serial->dev->descriptor.idVendor == XIRCOM_VENDOR_ID) ||
736 (serial->dev->descriptor.idVendor == ENTREGRA_VENDOR_ID))
737 record = &xircom_pgs_firmware[0];
739 if (record == NULL) {
740 err("%s: unknown vendor, aborting.", __FUNCTION__);
744 while(record->address != 0xffff) {
745 response = ezusb_writememory(serial, record->address,
746 (unsigned char *)record->data,
747 record->data_size, 0xa0);
749 err("ezusb_writememory failed for Keyspan PDA "
750 "firmware (%d %04X %p %d)",
752 record->address, record->data, record->data_size);
757 /* bring device out of reset. Renumeration will occur in a moment
758 and the new device will bind to the real driver */
759 response = ezusb_set_reset(serial, 0);
761 /* we want this device to fail to have a driver assigned to it. */
765 static int keyspan_pda_startup (struct usb_serial *serial)
768 struct keyspan_pda_private *priv;
770 /* allocate the private data structures for all ports. Well, for all
773 priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
775 return (1); /* error */
776 usb_set_serial_port_data(serial->port[0], priv);
777 init_waitqueue_head(&serial->port[0]->write_wait);
778 INIT_WORK(&priv->wakeup_work, (void *)keyspan_pda_wakeup_write,
779 (void *)(serial->port[0]));
780 INIT_WORK(&priv->unthrottle_work,
781 (void *)keyspan_pda_request_unthrottle,
786 static void keyspan_pda_shutdown (struct usb_serial *serial)
788 dbg("%s", __FUNCTION__);
790 kfree(usb_get_serial_port_data(serial->port[0]));
794 static struct usb_serial_device_type keyspan_pda_fake_device = {
795 .owner = THIS_MODULE,
796 .name = "Keyspan PDA - (prerenumeration)",
797 .short_name = "keyspan_pda_pre",
798 .id_table = id_table_fake,
799 .num_interrupt_in = NUM_DONT_CARE,
800 .num_bulk_in = NUM_DONT_CARE,
801 .num_bulk_out = NUM_DONT_CARE,
803 .attach = keyspan_pda_fake_startup,
808 static struct usb_serial_device_type xircom_pgs_fake_device = {
809 .owner = THIS_MODULE,
810 .name = "Xircom / Entregra PGS - (prerenumeration)",
811 .short_name = "xircom_no_firm",
812 .id_table = id_table_fake_xircom,
813 .num_interrupt_in = NUM_DONT_CARE,
814 .num_bulk_in = NUM_DONT_CARE,
815 .num_bulk_out = NUM_DONT_CARE,
817 .attach = keyspan_pda_fake_startup,
821 static struct usb_serial_device_type keyspan_pda_device = {
822 .owner = THIS_MODULE,
823 .name = "Keyspan PDA",
824 .short_name = "keyspan_pda",
825 .id_table = id_table_std,
826 .num_interrupt_in = 1,
830 .open = keyspan_pda_open,
831 .close = keyspan_pda_close,
832 .write = keyspan_pda_write,
833 .write_room = keyspan_pda_write_room,
834 .write_bulk_callback = keyspan_pda_write_bulk_callback,
835 .read_int_callback = keyspan_pda_rx_interrupt,
836 .chars_in_buffer = keyspan_pda_chars_in_buffer,
837 .throttle = keyspan_pda_rx_throttle,
838 .unthrottle = keyspan_pda_rx_unthrottle,
839 .ioctl = keyspan_pda_ioctl,
840 .set_termios = keyspan_pda_set_termios,
841 .break_ctl = keyspan_pda_break_ctl,
842 .tiocmget = keyspan_pda_tiocmget,
843 .tiocmset = keyspan_pda_tiocmset,
844 .attach = keyspan_pda_startup,
845 .shutdown = keyspan_pda_shutdown,
849 static int __init keyspan_pda_init (void)
852 retval = usb_serial_register(&keyspan_pda_device);
854 goto failed_pda_register;
856 retval = usb_serial_register(&keyspan_pda_fake_device);
858 goto failed_pda_fake_register;
861 retval = usb_serial_register(&xircom_pgs_fake_device);
863 goto failed_xircom_register;
865 retval = usb_register(&keyspan_pda_driver);
867 goto failed_usb_register;
868 info(DRIVER_DESC " " DRIVER_VERSION);
872 usb_serial_deregister(&xircom_pgs_fake_device);
873 failed_xircom_register:
876 usb_serial_deregister(&keyspan_pda_fake_device);
879 failed_pda_fake_register:
881 usb_serial_deregister(&keyspan_pda_device);
887 static void __exit keyspan_pda_exit (void)
889 usb_deregister (&keyspan_pda_driver);
890 usb_serial_deregister (&keyspan_pda_device);
892 usb_serial_deregister (&keyspan_pda_fake_device);
895 usb_serial_deregister (&xircom_pgs_fake_device);
900 module_init(keyspan_pda_init);
901 module_exit(keyspan_pda_exit);
903 MODULE_AUTHOR( DRIVER_AUTHOR );
904 MODULE_DESCRIPTION( DRIVER_DESC );
905 MODULE_LICENSE("GPL");
907 module_param(debug, bool, S_IRUGO | S_IWUSR);
908 MODULE_PARM_DESC(debug, "Debug enabled or not");