2 * USB Keyspan PDA / Xircom / Entrega 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 Entrega version of the same device */
123 #define XIRCOM_VENDOR_ID 0x085a
124 #define XIRCOM_FAKE_ID 0x8027
125 #define XIRCOM_FAKE_ID_2 0x8025 /* "PGMFHUB" serial */
126 #define ENTREGA_VENDOR_ID 0x1645
127 #define ENTREGA_FAKE_ID 0x8093
129 static const struct usb_device_id id_table_combined[] = {
131 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
134 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
135 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID_2) },
136 { USB_DEVICE(ENTREGA_VENDOR_ID, ENTREGA_FAKE_ID) },
138 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
139 { } /* Terminating entry */
142 MODULE_DEVICE_TABLE(usb, id_table_combined);
144 static struct usb_driver keyspan_pda_driver = {
145 .name = "keyspan_pda",
146 .probe = usb_serial_probe,
147 .disconnect = usb_serial_disconnect,
148 .id_table = id_table_combined,
152 static const struct usb_device_id id_table_std[] = {
153 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
154 { } /* Terminating entry */
158 static const struct usb_device_id id_table_fake[] = {
159 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
160 { } /* Terminating entry */
165 static const struct usb_device_id id_table_fake_xircom[] = {
166 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
167 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID_2) },
168 { USB_DEVICE(ENTREGA_VENDOR_ID, ENTREGA_FAKE_ID) },
173 static void keyspan_pda_wakeup_write(struct work_struct *work)
175 struct keyspan_pda_private *priv =
176 container_of(work, struct keyspan_pda_private, wakeup_work);
177 struct usb_serial_port *port = priv->port;
178 struct tty_struct *tty = tty_port_tty_get(&port->port);
184 static void keyspan_pda_request_unthrottle(struct work_struct *work)
186 struct keyspan_pda_private *priv =
187 container_of(work, struct keyspan_pda_private, unthrottle_work);
188 struct usb_serial *serial = priv->serial;
191 dbg(" request_unthrottle");
192 /* ask the device to tell us when the tx buffer becomes
193 sufficiently empty */
194 result = usb_control_msg(serial->dev,
195 usb_sndctrlpipe(serial->dev, 0),
196 7, /* request_unthrottle */
197 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
199 16, /* value: threshold */
205 dbg("%s - error %d from usb_control_msg",
210 static void keyspan_pda_rx_interrupt(struct urb *urb)
212 struct usb_serial_port *port = urb->context;
213 struct tty_struct *tty;
214 unsigned char *data = urb->transfer_buffer;
215 unsigned int len = urb->actual_length;
217 int status = urb->status;
218 struct keyspan_pda_private *priv;
219 priv = usb_get_serial_port_data(port);
228 /* this urb is terminated, clean up */
229 dbg("%s - urb shutting down with status: %d",
233 dbg("%s - nonzero urb status received: %d",
239 dev_warn(&port->dev, "short message received\n");
243 /* see if the message is data or a status interrupt */
246 tty = tty_port_tty_get(&port->port);
247 /* rest of message is rx data */
250 tty_insert_flip_string(tty, data + 1, len - 1);
251 tty_flip_buffer_push(tty);
255 /* status interrupt */
257 dev_warn(&port->dev, "short interrupt message received\n");
260 dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
262 case 1: /* modemline change */
264 case 2: /* tx unthrottle interrupt */
265 priv->tx_throttled = 0;
266 /* queue up a wakeup at scheduler time */
267 schedule_work(&priv->wakeup_work);
278 retval = usb_submit_urb(urb, GFP_ATOMIC);
281 "%s - usb_submit_urb failed with result %d",
286 static void keyspan_pda_rx_throttle(struct tty_struct *tty)
288 /* stop receiving characters. We just turn off the URB request, and
289 let chars pile up in the device. If we're doing hardware
290 flowcontrol, the device will signal the other end when its buffer
291 fills up. If we're doing XON/XOFF, this would be a good time to
292 send an XOFF, although it might make sense to foist that off
293 upon the device too. */
294 struct usb_serial_port *port = tty->driver_data;
295 dbg("keyspan_pda_rx_throttle port %d", port->number);
296 usb_kill_urb(port->interrupt_in_urb);
300 static void keyspan_pda_rx_unthrottle(struct tty_struct *tty)
302 struct usb_serial_port *port = tty->driver_data;
303 /* just restart the receive interrupt URB */
304 dbg("keyspan_pda_rx_unthrottle port %d", port->number);
305 port->interrupt_in_urb->dev = port->serial->dev;
306 if (usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL))
307 dbg(" usb_submit_urb(read urb) failed");
311 static speed_t keyspan_pda_setbaud(struct usb_serial *serial, speed_t baud)
348 bindex = 5; /* Default to 9600 */
352 /* rather than figure out how to sleep while waiting for this
353 to complete, I just use the "legacy" API. */
354 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
357 | USB_RECIP_INTERFACE
358 | USB_DIR_OUT, /* type */
370 static void keyspan_pda_break_ctl(struct tty_struct *tty, int break_state)
372 struct usb_serial_port *port = tty->driver_data;
373 struct usb_serial *serial = port->serial;
377 if (break_state == -1)
378 value = 1; /* start break */
380 value = 0; /* clear break */
381 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
383 USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
384 value, 0, NULL, 0, 2000);
386 dbg("%s - error %d from usb_control_msg",
388 /* there is something funky about this.. the TCSBRK that 'cu' performs
389 ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
390 seconds apart, but it feels like the break sent isn't as long as it
395 static void keyspan_pda_set_termios(struct tty_struct *tty,
396 struct usb_serial_port *port, struct ktermios *old_termios)
398 struct usb_serial *serial = port->serial;
401 /* cflag specifies lots of stuff: number of stop bits, parity, number
402 of data bits, baud. What can the device actually handle?:
403 CSTOPB (1 stop bit or 2)
406 There is minimal hw support for parity (a PSW bit seems to hold the
407 parity of whatever is in the accumulator). The UART either deals
408 with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
409 1 special, stop). So, with firmware changes, we could do:
411 8N2: 11 bit, extra bit always (mark?)
412 8[EOMS]1: 11 bit, extra bit is parity
413 7[EOMS]1: 10 bit, b0/b7 is parity
414 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
416 HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
419 For now, just do baud. */
421 speed = tty_get_baud_rate(tty);
422 speed = keyspan_pda_setbaud(serial, speed);
425 dbg("can't handle requested baud rate");
426 /* It hasn't changed so.. */
427 speed = tty_termios_baud_rate(old_termios);
429 /* Only speed can change so copy the old h/w parameters
430 then encode the new speed */
431 tty_termios_copy_hw(tty->termios, old_termios);
432 tty_encode_baud_rate(tty, speed, speed);
436 /* modem control pins: DTR and RTS are outputs and can be controlled.
437 DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
438 read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
440 static int keyspan_pda_get_modem_info(struct usb_serial *serial,
441 unsigned char *value)
446 data = kmalloc(1, GFP_KERNEL);
450 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
452 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
453 0, 0, data, 1, 2000);
462 static int keyspan_pda_set_modem_info(struct usb_serial *serial,
466 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
468 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
469 value, 0, NULL, 0, 2000);
473 static int keyspan_pda_tiocmget(struct tty_struct *tty)
475 struct usb_serial_port *port = tty->driver_data;
476 struct usb_serial *serial = port->serial;
478 unsigned char status;
481 rc = keyspan_pda_get_modem_info(serial, &status);
485 ((status & (1<<7)) ? TIOCM_DTR : 0) |
486 ((status & (1<<6)) ? TIOCM_CAR : 0) |
487 ((status & (1<<5)) ? TIOCM_RNG : 0) |
488 ((status & (1<<4)) ? TIOCM_DSR : 0) |
489 ((status & (1<<3)) ? TIOCM_CTS : 0) |
490 ((status & (1<<2)) ? TIOCM_RTS : 0);
494 static int keyspan_pda_tiocmset(struct tty_struct *tty,
495 unsigned int set, unsigned int clear)
497 struct usb_serial_port *port = tty->driver_data;
498 struct usb_serial *serial = port->serial;
500 unsigned char status;
502 rc = keyspan_pda_get_modem_info(serial, &status);
511 if (clear & TIOCM_RTS)
513 if (clear & TIOCM_DTR)
515 rc = keyspan_pda_set_modem_info(serial, status);
519 static int keyspan_pda_write(struct tty_struct *tty,
520 struct usb_serial_port *port, const unsigned char *buf, int count)
522 struct usb_serial *serial = port->serial;
523 int request_unthrottle = 0;
525 struct keyspan_pda_private *priv;
527 priv = usb_get_serial_port_data(port);
528 /* guess how much room is left in the device's ring buffer, and if we
529 want to send more than that, check first, updating our notion of
530 what is left. If our write will result in no room left, ask the
531 device to give us an interrupt when the room available rises above
532 a threshold, and hold off all writers (eventually, those using
533 select() or poll() too) until we receive that unthrottle interrupt.
534 Block if we can't write anything at all, otherwise write as much as
536 dbg("keyspan_pda_write(%d)", count);
538 dbg(" write request of 0 bytes");
542 /* we might block because of:
543 the TX urb is in-flight (wait until it completes)
544 the device is full (wait until it says there is room)
546 spin_lock_bh(&port->lock);
547 if (port->write_urb_busy || priv->tx_throttled) {
548 spin_unlock_bh(&port->lock);
551 port->write_urb_busy = 1;
552 spin_unlock_bh(&port->lock);
554 /* At this point the URB is in our control, nobody else can submit it
555 again (the only sudden transition was the one from EINPROGRESS to
556 finished). Also, the tx process is not throttled. So we are
559 count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
561 /* Check if we might overrun the Tx buffer. If so, ask the
562 device how much room it really has. This is done only on
563 scheduler time, since usb_control_msg() sleeps. */
564 if (count > priv->tx_room && !in_interrupt()) {
567 room = kmalloc(1, GFP_KERNEL);
573 rc = usb_control_msg(serial->dev,
574 usb_rcvctrlpipe(serial->dev, 0),
576 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
578 0, /* value: 0 means "remaining room" */
584 dbg(" roomquery says %d", *room);
585 priv->tx_room = *room;
589 dbg(" roomquery failed");
593 dbg(" roomquery returned 0 bytes");
594 rc = -EIO; /* device didn't return any data */
598 if (count > priv->tx_room) {
599 /* we're about to completely fill the Tx buffer, so
600 we'll be throttled afterwards. */
601 count = priv->tx_room;
602 request_unthrottle = 1;
606 /* now transfer data */
607 memcpy(port->write_urb->transfer_buffer, buf, count);
608 /* send the data out the bulk port */
609 port->write_urb->transfer_buffer_length = count;
611 priv->tx_room -= count;
613 port->write_urb->dev = port->serial->dev;
614 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
616 dbg(" usb_submit_urb(write bulk) failed");
620 /* There wasn't any room left, so we are throttled until
621 the buffer empties a bit */
622 request_unthrottle = 1;
625 if (request_unthrottle) {
626 priv->tx_throttled = 1; /* block writers */
627 schedule_work(&priv->unthrottle_work);
633 port->write_urb_busy = 0;
638 static void keyspan_pda_write_bulk_callback(struct urb *urb)
640 struct usb_serial_port *port = urb->context;
641 struct keyspan_pda_private *priv;
643 port->write_urb_busy = 0;
644 priv = usb_get_serial_port_data(port);
646 /* queue up a wakeup at scheduler time */
647 schedule_work(&priv->wakeup_work);
651 static int keyspan_pda_write_room(struct tty_struct *tty)
653 struct usb_serial_port *port = tty->driver_data;
654 struct keyspan_pda_private *priv;
655 priv = usb_get_serial_port_data(port);
656 /* used by n_tty.c for processing of tabs and such. Giving it our
657 conservative guess is probably good enough, but needs testing by
658 running a console through the device. */
659 return priv->tx_room;
663 static int keyspan_pda_chars_in_buffer(struct tty_struct *tty)
665 struct usb_serial_port *port = tty->driver_data;
666 struct keyspan_pda_private *priv;
670 priv = usb_get_serial_port_data(port);
672 /* when throttled, return at least WAKEUP_CHARS to tell select() (via
673 n_tty.c:normal_poll() ) that we're not writeable. */
675 spin_lock_irqsave(&port->lock, flags);
676 if (port->write_urb_busy || priv->tx_throttled)
678 spin_unlock_irqrestore(&port->lock, flags);
683 static void keyspan_pda_dtr_rts(struct usb_serial_port *port, int on)
685 struct usb_serial *serial = port->serial;
689 keyspan_pda_set_modem_info(serial, (1<<7) | (1<< 2));
691 keyspan_pda_set_modem_info(serial, 0);
696 static int keyspan_pda_open(struct tty_struct *tty,
697 struct usb_serial_port *port)
699 struct usb_serial *serial = port->serial;
702 struct keyspan_pda_private *priv;
704 /* find out how much room is in the Tx ring */
705 room = kmalloc(1, GFP_KERNEL);
709 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
711 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
719 dbg("%s - roomquery failed", __func__);
723 dbg("%s - roomquery returned 0 bytes", __func__);
727 priv = usb_get_serial_port_data(port);
728 priv->tx_room = *room;
729 priv->tx_throttled = *room ? 0 : 1;
731 /*Start reading from the device*/
732 port->interrupt_in_urb->dev = serial->dev;
733 rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
735 dbg("%s - usb_submit_urb(read int) failed", __func__);
742 static void keyspan_pda_close(struct usb_serial_port *port)
744 struct usb_serial *serial = port->serial;
747 /* shutdown our bulk reads and writes */
748 usb_kill_urb(port->write_urb);
749 usb_kill_urb(port->interrupt_in_urb);
754 /* download the firmware to a "fake" device (pre-renumeration) */
755 static int keyspan_pda_fake_startup(struct usb_serial *serial)
759 const struct ihex_binrec *record;
760 const struct firmware *fw;
762 /* download the firmware here ... */
763 response = ezusb_set_reset(serial, 1);
767 else if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID)
768 fw_name = "keyspan_pda/keyspan_pda.fw";
771 else if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) ||
772 (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGA_VENDOR_ID))
773 fw_name = "keyspan_pda/xircom_pgs.fw";
776 dev_err(&serial->dev->dev, "%s: unknown vendor, aborting.\n",
780 if (request_ihex_firmware(&fw, fw_name, &serial->dev->dev)) {
781 dev_err(&serial->dev->dev, "failed to load firmware \"%s\"\n",
785 record = (const struct ihex_binrec *)fw->data;
788 response = ezusb_writememory(serial, be32_to_cpu(record->addr),
789 (unsigned char *)record->data,
790 be16_to_cpu(record->len), 0xa0);
792 dev_err(&serial->dev->dev, "ezusb_writememory failed "
793 "for Keyspan PDA firmware (%d %04X %p %d)\n",
794 response, be32_to_cpu(record->addr),
795 record->data, be16_to_cpu(record->len));
798 record = ihex_next_binrec(record);
800 release_firmware(fw);
801 /* bring device out of reset. Renumeration will occur in a moment
802 and the new device will bind to the real driver */
803 response = ezusb_set_reset(serial, 0);
805 /* we want this device to fail to have a driver assigned to it. */
810 MODULE_FIRMWARE("keyspan_pda/keyspan_pda.fw");
813 MODULE_FIRMWARE("keyspan_pda/xircom_pgs.fw");
816 static int keyspan_pda_startup(struct usb_serial *serial)
818 unsigned char num_ports = serial->num_ports;
819 struct keyspan_pda_private *priv;
821 if (serial->num_bulk_out < num_ports ||
822 serial->num_interrupt_in < num_ports) {
823 dev_err(&serial->interface->dev, "missing endpoints\n");
827 /* allocate the private data structures for all ports. Well, for all
830 priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
832 return 1; /* error */
833 usb_set_serial_port_data(serial->port[0], priv);
834 init_waitqueue_head(&serial->port[0]->write_wait);
835 INIT_WORK(&priv->wakeup_work, keyspan_pda_wakeup_write);
836 INIT_WORK(&priv->unthrottle_work, keyspan_pda_request_unthrottle);
837 priv->serial = serial;
838 priv->port = serial->port[0];
842 static void keyspan_pda_release(struct usb_serial *serial)
846 kfree(usb_get_serial_port_data(serial->port[0]));
850 static struct usb_serial_driver keyspan_pda_fake_device = {
852 .owner = THIS_MODULE,
853 .name = "keyspan_pda_pre",
855 .description = "Keyspan PDA - (prerenumeration)",
856 .usb_driver = &keyspan_pda_driver,
857 .id_table = id_table_fake,
859 .attach = keyspan_pda_fake_startup,
864 static struct usb_serial_driver xircom_pgs_fake_device = {
866 .owner = THIS_MODULE,
867 .name = "xircom_no_firm",
869 .description = "Xircom / Entrega PGS - (prerenumeration)",
870 .usb_driver = &keyspan_pda_driver,
871 .id_table = id_table_fake_xircom,
873 .attach = keyspan_pda_fake_startup,
877 static struct usb_serial_driver keyspan_pda_device = {
879 .owner = THIS_MODULE,
880 .name = "keyspan_pda",
882 .description = "Keyspan PDA",
883 .usb_driver = &keyspan_pda_driver,
884 .id_table = id_table_std,
886 .dtr_rts = keyspan_pda_dtr_rts,
887 .open = keyspan_pda_open,
888 .close = keyspan_pda_close,
889 .write = keyspan_pda_write,
890 .write_room = keyspan_pda_write_room,
891 .write_bulk_callback = keyspan_pda_write_bulk_callback,
892 .read_int_callback = keyspan_pda_rx_interrupt,
893 .chars_in_buffer = keyspan_pda_chars_in_buffer,
894 .throttle = keyspan_pda_rx_throttle,
895 .unthrottle = keyspan_pda_rx_unthrottle,
896 .set_termios = keyspan_pda_set_termios,
897 .break_ctl = keyspan_pda_break_ctl,
898 .tiocmget = keyspan_pda_tiocmget,
899 .tiocmset = keyspan_pda_tiocmset,
900 .attach = keyspan_pda_startup,
901 .release = keyspan_pda_release,
905 static int __init keyspan_pda_init(void)
908 retval = usb_serial_register(&keyspan_pda_device);
910 goto failed_pda_register;
912 retval = usb_serial_register(&keyspan_pda_fake_device);
914 goto failed_pda_fake_register;
917 retval = usb_serial_register(&xircom_pgs_fake_device);
919 goto failed_xircom_register;
921 retval = usb_register(&keyspan_pda_driver);
923 goto failed_usb_register;
924 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
929 usb_serial_deregister(&xircom_pgs_fake_device);
930 failed_xircom_register:
933 usb_serial_deregister(&keyspan_pda_fake_device);
936 failed_pda_fake_register:
938 usb_serial_deregister(&keyspan_pda_device);
944 static void __exit keyspan_pda_exit(void)
946 usb_deregister(&keyspan_pda_driver);
947 usb_serial_deregister(&keyspan_pda_device);
949 usb_serial_deregister(&keyspan_pda_fake_device);
952 usb_serial_deregister(&xircom_pgs_fake_device);
957 module_init(keyspan_pda_init);
958 module_exit(keyspan_pda_exit);
960 MODULE_AUTHOR(DRIVER_AUTHOR);
961 MODULE_DESCRIPTION(DRIVER_DESC);
962 MODULE_LICENSE("GPL");
964 module_param(debug, bool, S_IRUGO | S_IWUSR);
965 MODULE_PARM_DESC(debug, "Debug enabled or not");