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>
83 #ifdef CONFIG_USB_SERIAL_DEBUG
90 struct ezusb_hex_record {
96 /* make a simple define to handle if we are compiling keyspan_pda or xircom support */
97 #if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE)
102 #if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE)
109 #include "keyspan_pda_fw.h"
113 #include "xircom_pgs_fw.h"
116 #include "usb-serial.h"
119 * Version Information
121 #define DRIVER_VERSION "v1.1"
122 #define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>"
123 #define DRIVER_DESC "USB Keyspan PDA Converter driver"
125 struct keyspan_pda_private {
128 struct work_struct wakeup_work;
129 struct work_struct unthrottle_work;
133 #define KEYSPAN_VENDOR_ID 0x06cd
134 #define KEYSPAN_PDA_FAKE_ID 0x0103
135 #define KEYSPAN_PDA_ID 0x0104 /* no clue */
137 /* For Xircom PGSDB9 and older Entregra version of the same device */
138 #define XIRCOM_VENDOR_ID 0x085a
139 #define XIRCOM_FAKE_ID 0x8027
140 #define ENTREGRA_VENDOR_ID 0x1645
141 #define ENTREGRA_FAKE_ID 0x8093
143 static struct usb_device_id id_table_combined [] = {
145 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
148 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
149 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
151 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
152 { } /* Terminating entry */
155 MODULE_DEVICE_TABLE (usb, id_table_combined);
157 static struct usb_driver keyspan_pda_driver = {
158 .owner = THIS_MODULE,
159 .name = "keyspan_pda",
160 .probe = usb_serial_probe,
161 .disconnect = usb_serial_disconnect,
162 .id_table = id_table_combined,
165 static struct usb_device_id id_table_std [] = {
166 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
167 { } /* Terminating entry */
171 static struct usb_device_id id_table_fake [] = {
172 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
173 { } /* Terminating entry */
178 static struct usb_device_id id_table_fake_xircom [] = {
179 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
180 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
185 static void keyspan_pda_wakeup_write( struct usb_serial_port *port )
188 struct tty_struct *tty = port->tty;
190 /* wake up port processes */
191 wake_up_interruptible( &port->write_wait );
193 /* wake up line discipline */
194 if( (tty->flags & (1 << TTY_DO_WRITE_WAKEUP))
195 && tty->ldisc.write_wakeup )
196 (tty->ldisc.write_wakeup)(tty);
198 /* wake up other tty processes */
199 wake_up_interruptible( &tty->write_wait );
200 /* For 2.2.16 backport -- wake_up_interruptible( &tty->poll_wait ); */
203 static void keyspan_pda_request_unthrottle( struct usb_serial *serial )
207 dbg(" request_unthrottle");
208 /* ask the device to tell us when the tx buffer becomes
209 sufficiently empty */
210 result = usb_control_msg(serial->dev,
211 usb_sndctrlpipe(serial->dev, 0),
212 7, /* request_unthrottle */
213 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
215 16, /* value: threshold */
221 dbg("%s - error %d from usb_control_msg",
222 __FUNCTION__, result);
226 static void keyspan_pda_rx_interrupt (struct urb *urb, struct pt_regs *regs)
228 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
229 struct tty_struct *tty = port->tty;
230 unsigned char *data = urb->transfer_buffer;
233 struct keyspan_pda_private *priv;
234 priv = usb_get_serial_port_data(port);
236 switch (urb->status) {
243 /* this urb is terminated, clean up */
244 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
247 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
251 /* see if the message is data or a status interrupt */
254 /* rest of message is rx data */
255 if (urb->actual_length) {
256 for (i = 1; i < urb->actual_length ; ++i) {
257 tty_insert_flip_char(tty, data[i], 0);
259 tty_flip_buffer_push(tty);
263 /* status interrupt */
264 dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
266 case 1: /* modemline change */
268 case 2: /* tx unthrottle interrupt */
269 priv->tx_throttled = 0;
270 /* queue up a wakeup at scheduler time */
271 schedule_work(&priv->wakeup_work);
282 status = usb_submit_urb (urb, GFP_ATOMIC);
284 err ("%s - usb_submit_urb failed with result %d",
285 __FUNCTION__, status);
289 static void keyspan_pda_rx_throttle (struct usb_serial_port *port)
291 /* stop receiving characters. We just turn off the URB request, and
292 let chars pile up in the device. If we're doing hardware
293 flowcontrol, the device will signal the other end when its buffer
294 fills up. If we're doing XON/XOFF, this would be a good time to
295 send an XOFF, although it might make sense to foist that off
296 upon the device too. */
298 dbg("keyspan_pda_rx_throttle port %d", port->number);
299 usb_unlink_urb(port->interrupt_in_urb);
303 static void keyspan_pda_rx_unthrottle (struct usb_serial_port *port)
305 /* just restart the receive interrupt URB */
306 dbg("keyspan_pda_rx_unthrottle port %d", port->number);
307 port->interrupt_in_urb->dev = port->serial->dev;
308 if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC))
309 dbg(" usb_submit_urb(read urb) failed");
314 static int keyspan_pda_setbaud (struct usb_serial *serial, int baud)
320 case 110: bindex = 0; break;
321 case 300: bindex = 1; break;
322 case 1200: bindex = 2; break;
323 case 2400: bindex = 3; break;
324 case 4800: bindex = 4; break;
325 case 9600: bindex = 5; break;
326 case 19200: bindex = 6; break;
327 case 38400: bindex = 7; break;
328 case 57600: bindex = 8; break;
329 case 115200: bindex = 9; break;
330 default: return -EINVAL;
333 /* rather than figure out how to sleep while waiting for this
334 to complete, I just use the "legacy" API. */
335 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
338 | USB_RECIP_INTERFACE
339 | USB_DIR_OUT, /* type */
349 static void keyspan_pda_break_ctl (struct usb_serial_port *port, int break_state)
351 struct usb_serial *serial = port->serial;
355 if (break_state == -1)
356 value = 1; /* start break */
358 value = 0; /* clear break */
359 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
361 USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
362 value, 0, NULL, 0, 2*HZ);
364 dbg("%s - error %d from usb_control_msg",
365 __FUNCTION__, result);
366 /* there is something funky about this.. the TCSBRK that 'cu' performs
367 ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
368 seconds apart, but it feels like the break sent isn't as long as it
373 static void keyspan_pda_set_termios (struct usb_serial_port *port,
374 struct termios *old_termios)
376 struct usb_serial *serial = port->serial;
377 unsigned int cflag = port->tty->termios->c_cflag;
379 /* cflag specifies lots of stuff: number of stop bits, parity, number
380 of data bits, baud. What can the device actually handle?:
381 CSTOPB (1 stop bit or 2)
384 There is minimal hw support for parity (a PSW bit seems to hold the
385 parity of whatever is in the accumulator). The UART either deals
386 with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
387 1 special, stop). So, with firmware changes, we could do:
389 8N2: 11 bit, extra bit always (mark?)
390 8[EOMS]1: 11 bit, extra bit is parity
391 7[EOMS]1: 10 bit, b0/b7 is parity
392 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
394 HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
397 For now, just do baud. */
399 switch (cflag & CBAUD) {
400 /* we could support more values here, just need to calculate
401 the necessary divisors in the firmware. <asm/termbits.h>
402 has the Bnnn constants. */
403 case B110: keyspan_pda_setbaud(serial, 110); break;
404 case B300: keyspan_pda_setbaud(serial, 300); break;
405 case B1200: keyspan_pda_setbaud(serial, 1200); break;
406 case B2400: keyspan_pda_setbaud(serial, 2400); break;
407 case B4800: keyspan_pda_setbaud(serial, 4800); break;
408 case B9600: keyspan_pda_setbaud(serial, 9600); break;
409 case B19200: keyspan_pda_setbaud(serial, 19200); break;
410 case B38400: keyspan_pda_setbaud(serial, 38400); break;
411 case B57600: keyspan_pda_setbaud(serial, 57600); break;
412 case B115200: keyspan_pda_setbaud(serial, 115200); break;
413 default: dbg("can't handle requested baud rate"); break;
418 /* modem control pins: DTR and RTS are outputs and can be controlled.
419 DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
420 read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
422 static int keyspan_pda_get_modem_info(struct usb_serial *serial,
423 unsigned char *value)
427 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
429 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
430 0, 0, &data, 1, 2*HZ);
437 static int keyspan_pda_set_modem_info(struct usb_serial *serial,
441 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
443 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
444 value, 0, NULL, 0, 2*HZ);
448 static int keyspan_pda_tiocmget(struct usb_serial_port *port, struct file *file)
450 struct usb_serial *serial = port->serial;
452 unsigned char status;
455 rc = keyspan_pda_get_modem_info(serial, &status);
459 ((status & (1<<7)) ? TIOCM_DTR : 0) |
460 ((status & (1<<6)) ? TIOCM_CAR : 0) |
461 ((status & (1<<5)) ? TIOCM_RNG : 0) |
462 ((status & (1<<4)) ? TIOCM_DSR : 0) |
463 ((status & (1<<3)) ? TIOCM_CTS : 0) |
464 ((status & (1<<2)) ? TIOCM_RTS : 0);
468 static int keyspan_pda_tiocmset(struct usb_serial_port *port, struct file *file,
469 unsigned int set, unsigned int clear)
471 struct usb_serial *serial = port->serial;
473 unsigned char status;
475 rc = keyspan_pda_get_modem_info(serial, &status);
484 if (clear & TIOCM_RTS)
486 if (clear & TIOCM_DTR)
488 rc = keyspan_pda_set_modem_info(serial, status);
492 static int keyspan_pda_ioctl(struct usb_serial_port *port, struct file *file,
493 unsigned int cmd, unsigned long arg)
497 /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
500 /* return count of modemline transitions */
507 static int keyspan_pda_write(struct usb_serial_port *port, int from_user,
508 const unsigned char *buf, int count)
510 struct usb_serial *serial = port->serial;
511 int request_unthrottle = 0;
513 struct keyspan_pda_private *priv;
515 priv = usb_get_serial_port_data(port);
516 /* guess how much room is left in the device's ring buffer, and if we
517 want to send more than that, check first, updating our notion of
518 what is left. If our write will result in no room left, ask the
519 device to give us an interrupt when the room available rises above
520 a threshold, and hold off all writers (eventually, those using
521 select() or poll() too) until we receive that unthrottle interrupt.
522 Block if we can't write anything at all, otherwise write as much as
524 dbg("keyspan_pda_write(%d)",count);
526 dbg(" write request of 0 bytes");
530 /* we might block because of:
531 the TX urb is in-flight (wait until it completes)
532 the device is full (wait until it says there is room)
534 if (port->write_urb->status == -EINPROGRESS || priv->tx_throttled ) {
538 /* At this point the URB is in our control, nobody else can submit it
539 again (the only sudden transition was the one from EINPROGRESS to
540 finished). Also, the tx process is not throttled. So we are
543 count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
545 /* Check if we might overrun the Tx buffer. If so, ask the
546 device how much room it really has. This is done only on
547 scheduler time, since usb_control_msg() sleeps. */
548 if (count > priv->tx_room && !in_interrupt()) {
550 rc = usb_control_msg(serial->dev,
551 usb_rcvctrlpipe(serial->dev, 0),
553 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
555 0, /* value: 0 means "remaining room" */
561 dbg(" roomquery failed");
565 dbg(" roomquery returned 0 bytes");
566 rc = -EIO; /* device didn't return any data */
569 dbg(" roomquery says %d", room);
570 priv->tx_room = room;
572 if (count > priv->tx_room) {
573 /* we're about to completely fill the Tx buffer, so
574 we'll be throttled afterwards. */
575 count = priv->tx_room;
576 request_unthrottle = 1;
580 /* now transfer data */
582 if( copy_from_user(port->write_urb->transfer_buffer,
589 memcpy (port->write_urb->transfer_buffer, buf, count);
591 /* send the data out the bulk port */
592 port->write_urb->transfer_buffer_length = count;
594 priv->tx_room -= count;
596 port->write_urb->dev = port->serial->dev;
597 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
599 dbg(" usb_submit_urb(write bulk) failed");
604 /* There wasn't any room left, so we are throttled until
605 the buffer empties a bit */
606 request_unthrottle = 1;
609 if (request_unthrottle) {
610 priv->tx_throttled = 1; /* block writers */
611 schedule_work(&priv->unthrottle_work);
620 static void keyspan_pda_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
622 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
623 struct keyspan_pda_private *priv;
625 priv = usb_get_serial_port_data(port);
627 /* queue up a wakeup at scheduler time */
628 schedule_work(&priv->wakeup_work);
632 static int keyspan_pda_write_room (struct usb_serial_port *port)
634 struct keyspan_pda_private *priv;
636 priv = usb_get_serial_port_data(port);
638 /* used by n_tty.c for processing of tabs and such. Giving it our
639 conservative guess is probably good enough, but needs testing by
640 running a console through the device. */
642 return (priv->tx_room);
646 static int keyspan_pda_chars_in_buffer (struct usb_serial_port *port)
648 struct keyspan_pda_private *priv;
650 priv = usb_get_serial_port_data(port);
652 /* when throttled, return at least WAKEUP_CHARS to tell select() (via
653 n_tty.c:normal_poll() ) that we're not writeable. */
654 if( port->write_urb->status == -EINPROGRESS || priv->tx_throttled )
660 static int keyspan_pda_open (struct usb_serial_port *port, struct file *filp)
662 struct usb_serial *serial = port->serial;
665 struct keyspan_pda_private *priv;
667 /* find out how much room is in the Tx ring */
668 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
670 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
678 dbg("%s - roomquery failed", __FUNCTION__);
682 dbg("%s - roomquery returned 0 bytes", __FUNCTION__);
686 priv = usb_get_serial_port_data(port);
687 priv->tx_room = room;
688 priv->tx_throttled = room ? 0 : 1;
690 /* the normal serial device seems to always turn on DTR and RTS here,
692 if (port->tty->termios->c_cflag & CBAUD)
693 keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2) );
695 keyspan_pda_set_modem_info(serial, 0);
697 /*Start reading from the device*/
698 port->interrupt_in_urb->dev = serial->dev;
699 rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
701 dbg("%s - usb_submit_urb(read int) failed", __FUNCTION__);
710 static void keyspan_pda_close(struct usb_serial_port *port, struct file *filp)
712 struct usb_serial *serial = port->serial;
715 /* the normal serial device seems to always shut off DTR and RTS now */
716 if (port->tty->termios->c_cflag & HUPCL)
717 keyspan_pda_set_modem_info(serial, 0);
719 /* shutdown our bulk reads and writes */
720 usb_unlink_urb (port->write_urb);
721 usb_unlink_urb (port->interrupt_in_urb);
726 /* download the firmware to a "fake" device (pre-renumeration) */
727 static int keyspan_pda_fake_startup (struct usb_serial *serial)
730 const struct ezusb_hex_record *record = NULL;
732 /* download the firmware here ... */
733 response = ezusb_set_reset(serial, 1);
736 if (serial->dev->descriptor.idVendor == KEYSPAN_VENDOR_ID)
737 record = &keyspan_pda_firmware[0];
740 if ((serial->dev->descriptor.idVendor == XIRCOM_VENDOR_ID) ||
741 (serial->dev->descriptor.idVendor == ENTREGRA_VENDOR_ID))
742 record = &xircom_pgs_firmware[0];
744 if (record == NULL) {
745 err("%s: unknown vendor, aborting.", __FUNCTION__);
749 while(record->address != 0xffff) {
750 response = ezusb_writememory(serial, record->address,
751 (unsigned char *)record->data,
752 record->data_size, 0xa0);
754 err("ezusb_writememory failed for Keyspan PDA "
755 "firmware (%d %04X %p %d)",
757 record->address, record->data, record->data_size);
762 /* bring device out of reset. Renumeration will occur in a moment
763 and the new device will bind to the real driver */
764 response = ezusb_set_reset(serial, 0);
766 /* we want this device to fail to have a driver assigned to it. */
770 static int keyspan_pda_startup (struct usb_serial *serial)
773 struct keyspan_pda_private *priv;
775 /* allocate the private data structures for all ports. Well, for all
778 priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
780 return (1); /* error */
781 usb_set_serial_port_data(serial->port[0], priv);
782 init_waitqueue_head(&serial->port[0]->write_wait);
783 INIT_WORK(&priv->wakeup_work, (void *)keyspan_pda_wakeup_write,
784 (void *)(&serial->port[0]));
785 INIT_WORK(&priv->unthrottle_work,
786 (void *)keyspan_pda_request_unthrottle,
791 static void keyspan_pda_shutdown (struct usb_serial *serial)
793 dbg("%s", __FUNCTION__);
795 kfree(usb_get_serial_port_data(serial->port[0]));
799 static struct usb_serial_device_type keyspan_pda_fake_device = {
800 .owner = THIS_MODULE,
801 .name = "Keyspan PDA - (prerenumeration)",
802 .short_name = "keyspan_pda_pre",
803 .id_table = id_table_fake,
804 .num_interrupt_in = NUM_DONT_CARE,
805 .num_bulk_in = NUM_DONT_CARE,
806 .num_bulk_out = NUM_DONT_CARE,
808 .attach = keyspan_pda_fake_startup,
813 static struct usb_serial_device_type xircom_pgs_fake_device = {
814 .owner = THIS_MODULE,
815 .name = "Xircom / Entregra PGS - (prerenumeration)",
816 .short_name = "xircom_no_firm",
817 .id_table = id_table_fake_xircom,
818 .num_interrupt_in = NUM_DONT_CARE,
819 .num_bulk_in = NUM_DONT_CARE,
820 .num_bulk_out = NUM_DONT_CARE,
822 .attach = keyspan_pda_fake_startup,
826 static struct usb_serial_device_type keyspan_pda_device = {
827 .owner = THIS_MODULE,
828 .name = "Keyspan PDA",
829 .short_name = "keyspan_pda",
830 .id_table = id_table_std,
831 .num_interrupt_in = 1,
835 .open = keyspan_pda_open,
836 .close = keyspan_pda_close,
837 .write = keyspan_pda_write,
838 .write_room = keyspan_pda_write_room,
839 .write_bulk_callback = keyspan_pda_write_bulk_callback,
840 .read_int_callback = keyspan_pda_rx_interrupt,
841 .chars_in_buffer = keyspan_pda_chars_in_buffer,
842 .throttle = keyspan_pda_rx_throttle,
843 .unthrottle = keyspan_pda_rx_unthrottle,
844 .ioctl = keyspan_pda_ioctl,
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_PARM(debug, "i");
913 MODULE_PARM_DESC(debug, "Debug enabled or not");