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 usb_serial *serial;
230 struct tty_struct *tty;
231 unsigned char *data = urb->transfer_buffer;
234 struct keyspan_pda_private *priv;
235 priv = usb_get_serial_port_data(port);
237 switch (urb->status) {
244 /* this urb is terminated, clean up */
245 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
248 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
253 if (port_paranoia_check (port, "keyspan_pda_rx_interrupt")) {
257 serial = port->serial;
258 if (serial_paranoia_check (serial, "keyspan_pda_rx_interrupt")) {
262 /* see if the message is data or a status interrupt */
265 /* rest of message is rx data */
266 if (urb->actual_length) {
267 tty = serial->port[0]->tty;
268 for (i = 1; i < urb->actual_length ; ++i) {
269 tty_insert_flip_char(tty, data[i], 0);
271 tty_flip_buffer_push(tty);
275 /* status interrupt */
276 dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
278 case 1: /* modemline change */
280 case 2: /* tx unthrottle interrupt */
281 tty = serial->port[0]->tty;
282 priv->tx_throttled = 0;
283 /* queue up a wakeup at scheduler time */
284 schedule_work(&priv->wakeup_work);
295 status = usb_submit_urb (urb, GFP_ATOMIC);
297 err ("%s - usb_submit_urb failed with result %d",
298 __FUNCTION__, status);
302 static void keyspan_pda_rx_throttle (struct usb_serial_port *port)
304 /* stop receiving characters. We just turn off the URB request, and
305 let chars pile up in the device. If we're doing hardware
306 flowcontrol, the device will signal the other end when its buffer
307 fills up. If we're doing XON/XOFF, this would be a good time to
308 send an XOFF, although it might make sense to foist that off
309 upon the device too. */
311 dbg("keyspan_pda_rx_throttle port %d", port->number);
312 usb_unlink_urb(port->interrupt_in_urb);
316 static void keyspan_pda_rx_unthrottle (struct usb_serial_port *port)
318 /* just restart the receive interrupt URB */
319 dbg("keyspan_pda_rx_unthrottle port %d", port->number);
320 port->interrupt_in_urb->dev = port->serial->dev;
321 if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC))
322 dbg(" usb_submit_urb(read urb) failed");
327 static int keyspan_pda_setbaud (struct usb_serial *serial, int baud)
333 case 110: bindex = 0; break;
334 case 300: bindex = 1; break;
335 case 1200: bindex = 2; break;
336 case 2400: bindex = 3; break;
337 case 4800: bindex = 4; break;
338 case 9600: bindex = 5; break;
339 case 19200: bindex = 6; break;
340 case 38400: bindex = 7; break;
341 case 57600: bindex = 8; break;
342 case 115200: bindex = 9; break;
343 default: return -EINVAL;
346 /* rather than figure out how to sleep while waiting for this
347 to complete, I just use the "legacy" API. */
348 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
351 | USB_RECIP_INTERFACE
352 | USB_DIR_OUT, /* type */
362 static void keyspan_pda_break_ctl (struct usb_serial_port *port, int break_state)
364 struct usb_serial *serial = port->serial;
368 if (break_state == -1)
369 value = 1; /* start break */
371 value = 0; /* clear break */
372 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
374 USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
375 value, 0, NULL, 0, 2*HZ);
377 dbg("%s - error %d from usb_control_msg",
378 __FUNCTION__, result);
379 /* there is something funky about this.. the TCSBRK that 'cu' performs
380 ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
381 seconds apart, but it feels like the break sent isn't as long as it
386 static void keyspan_pda_set_termios (struct usb_serial_port *port,
387 struct termios *old_termios)
389 struct usb_serial *serial = port->serial;
390 unsigned int cflag = port->tty->termios->c_cflag;
392 /* cflag specifies lots of stuff: number of stop bits, parity, number
393 of data bits, baud. What can the device actually handle?:
394 CSTOPB (1 stop bit or 2)
397 There is minimal hw support for parity (a PSW bit seems to hold the
398 parity of whatever is in the accumulator). The UART either deals
399 with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
400 1 special, stop). So, with firmware changes, we could do:
402 8N2: 11 bit, extra bit always (mark?)
403 8[EOMS]1: 11 bit, extra bit is parity
404 7[EOMS]1: 10 bit, b0/b7 is parity
405 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
407 HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
410 For now, just do baud. */
412 switch (cflag & CBAUD) {
413 /* we could support more values here, just need to calculate
414 the necessary divisors in the firmware. <asm/termbits.h>
415 has the Bnnn constants. */
416 case B110: keyspan_pda_setbaud(serial, 110); break;
417 case B300: keyspan_pda_setbaud(serial, 300); break;
418 case B1200: keyspan_pda_setbaud(serial, 1200); break;
419 case B2400: keyspan_pda_setbaud(serial, 2400); break;
420 case B4800: keyspan_pda_setbaud(serial, 4800); break;
421 case B9600: keyspan_pda_setbaud(serial, 9600); break;
422 case B19200: keyspan_pda_setbaud(serial, 19200); break;
423 case B38400: keyspan_pda_setbaud(serial, 38400); break;
424 case B57600: keyspan_pda_setbaud(serial, 57600); break;
425 case B115200: keyspan_pda_setbaud(serial, 115200); break;
426 default: dbg("can't handle requested baud rate"); break;
431 /* modem control pins: DTR and RTS are outputs and can be controlled.
432 DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
433 read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
435 static int keyspan_pda_get_modem_info(struct usb_serial *serial,
436 unsigned char *value)
440 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
442 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
443 0, 0, &data, 1, 2*HZ);
450 static int keyspan_pda_set_modem_info(struct usb_serial *serial,
454 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
456 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
457 value, 0, NULL, 0, 2*HZ);
461 static int keyspan_pda_tiocmget(struct usb_serial_port *port, struct file *file)
463 struct usb_serial *serial = port->serial;
465 unsigned char status;
468 rc = keyspan_pda_get_modem_info(serial, &status);
472 ((status & (1<<7)) ? TIOCM_DTR : 0) |
473 ((status & (1<<6)) ? TIOCM_CAR : 0) |
474 ((status & (1<<5)) ? TIOCM_RNG : 0) |
475 ((status & (1<<4)) ? TIOCM_DSR : 0) |
476 ((status & (1<<3)) ? TIOCM_CTS : 0) |
477 ((status & (1<<2)) ? TIOCM_RTS : 0);
481 static int keyspan_pda_tiocmset(struct usb_serial_port *port, struct file *file,
482 unsigned int set, unsigned int clear)
484 struct usb_serial *serial = port->serial;
486 unsigned char status;
488 rc = keyspan_pda_get_modem_info(serial, &status);
497 if (clear & TIOCM_RTS)
499 if (clear & TIOCM_DTR)
501 rc = keyspan_pda_set_modem_info(serial, status);
505 static int keyspan_pda_ioctl(struct usb_serial_port *port, struct file *file,
506 unsigned int cmd, unsigned long arg)
510 /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
513 /* return count of modemline transitions */
520 static int keyspan_pda_write(struct usb_serial_port *port, int from_user,
521 const unsigned char *buf, int count)
523 struct usb_serial *serial = port->serial;
524 int request_unthrottle = 0;
526 struct keyspan_pda_private *priv;
528 priv = usb_get_serial_port_data(port);
529 /* guess how much room is left in the device's ring buffer, and if we
530 want to send more than that, check first, updating our notion of
531 what is left. If our write will result in no room left, ask the
532 device to give us an interrupt when the room available rises above
533 a threshold, and hold off all writers (eventually, those using
534 select() or poll() too) until we receive that unthrottle interrupt.
535 Block if we can't write anything at all, otherwise write as much as
537 dbg("keyspan_pda_write(%d)",count);
539 dbg(" write request of 0 bytes");
543 /* we might block because of:
544 the TX urb is in-flight (wait until it completes)
545 the device is full (wait until it says there is room)
547 if (port->write_urb->status == -EINPROGRESS || priv->tx_throttled ) {
551 /* At this point the URB is in our control, nobody else can submit it
552 again (the only sudden transition was the one from EINPROGRESS to
553 finished). Also, the tx process is not throttled. So we are
556 count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
558 /* Check if we might overrun the Tx buffer. If so, ask the
559 device how much room it really has. This is done only on
560 scheduler time, since usb_control_msg() sleeps. */
561 if (count > priv->tx_room && !in_interrupt()) {
563 rc = usb_control_msg(serial->dev,
564 usb_rcvctrlpipe(serial->dev, 0),
566 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
568 0, /* value: 0 means "remaining room" */
574 dbg(" roomquery failed");
578 dbg(" roomquery returned 0 bytes");
579 rc = -EIO; /* device didn't return any data */
582 dbg(" roomquery says %d", room);
583 priv->tx_room = room;
585 if (count > priv->tx_room) {
586 /* we're about to completely fill the Tx buffer, so
587 we'll be throttled afterwards. */
588 count = priv->tx_room;
589 request_unthrottle = 1;
593 /* now transfer data */
595 if( copy_from_user(port->write_urb->transfer_buffer,
602 memcpy (port->write_urb->transfer_buffer, buf, count);
604 /* send the data out the bulk port */
605 port->write_urb->transfer_buffer_length = count;
607 priv->tx_room -= count;
609 port->write_urb->dev = port->serial->dev;
610 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
612 dbg(" usb_submit_urb(write bulk) failed");
617 /* There wasn't any room left, so we are throttled until
618 the buffer empties a bit */
619 request_unthrottle = 1;
622 if (request_unthrottle) {
623 priv->tx_throttled = 1; /* block writers */
624 schedule_work(&priv->unthrottle_work);
633 static void keyspan_pda_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
635 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
636 struct usb_serial *serial;
637 struct keyspan_pda_private *priv;
639 priv = usb_get_serial_port_data(port);
641 if (port_paranoia_check (port, "keyspan_pda_rx_interrupt")) {
645 serial = port->serial;
646 if (serial_paranoia_check (serial, "keyspan_pda_rx_interrupt")) {
650 /* queue up a wakeup at scheduler time */
651 schedule_work(&priv->wakeup_work);
655 static int keyspan_pda_write_room (struct usb_serial_port *port)
657 struct keyspan_pda_private *priv;
659 priv = usb_get_serial_port_data(port);
661 /* used by n_tty.c for processing of tabs and such. Giving it our
662 conservative guess is probably good enough, but needs testing by
663 running a console through the device. */
665 return (priv->tx_room);
669 static int keyspan_pda_chars_in_buffer (struct usb_serial_port *port)
671 struct keyspan_pda_private *priv;
673 priv = usb_get_serial_port_data(port);
675 /* when throttled, return at least WAKEUP_CHARS to tell select() (via
676 n_tty.c:normal_poll() ) that we're not writeable. */
677 if( port->write_urb->status == -EINPROGRESS || priv->tx_throttled )
683 static int keyspan_pda_open (struct usb_serial_port *port, struct file *filp)
685 struct usb_serial *serial = port->serial;
688 struct keyspan_pda_private *priv;
690 /* find out how much room is in the Tx ring */
691 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
693 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
701 dbg("%s - roomquery failed", __FUNCTION__);
705 dbg("%s - roomquery returned 0 bytes", __FUNCTION__);
709 priv = usb_get_serial_port_data(port);
710 priv->tx_room = room;
711 priv->tx_throttled = room ? 0 : 1;
713 /* the normal serial device seems to always turn on DTR and RTS here,
715 if (port->tty->termios->c_cflag & CBAUD)
716 keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2) );
718 keyspan_pda_set_modem_info(serial, 0);
720 /*Start reading from the device*/
721 port->interrupt_in_urb->dev = serial->dev;
722 rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
724 dbg("%s - usb_submit_urb(read int) failed", __FUNCTION__);
733 static void keyspan_pda_close(struct usb_serial_port *port, struct file *filp)
735 struct usb_serial *serial = port->serial;
738 /* the normal serial device seems to always shut off DTR and RTS now */
739 if (port->tty->termios->c_cflag & HUPCL)
740 keyspan_pda_set_modem_info(serial, 0);
742 /* shutdown our bulk reads and writes */
743 usb_unlink_urb (port->write_urb);
744 usb_unlink_urb (port->interrupt_in_urb);
749 /* download the firmware to a "fake" device (pre-renumeration) */
750 static int keyspan_pda_fake_startup (struct usb_serial *serial)
753 const struct ezusb_hex_record *record = NULL;
755 /* download the firmware here ... */
756 response = ezusb_set_reset(serial, 1);
759 if (serial->dev->descriptor.idVendor == KEYSPAN_VENDOR_ID)
760 record = &keyspan_pda_firmware[0];
763 if ((serial->dev->descriptor.idVendor == XIRCOM_VENDOR_ID) ||
764 (serial->dev->descriptor.idVendor == ENTREGRA_VENDOR_ID))
765 record = &xircom_pgs_firmware[0];
767 if (record == NULL) {
768 err("%s: unknown vendor, aborting.", __FUNCTION__);
772 while(record->address != 0xffff) {
773 response = ezusb_writememory(serial, record->address,
774 (unsigned char *)record->data,
775 record->data_size, 0xa0);
777 err("ezusb_writememory failed for Keyspan PDA "
778 "firmware (%d %04X %p %d)",
780 record->address, record->data, record->data_size);
785 /* bring device out of reset. Renumeration will occur in a moment
786 and the new device will bind to the real driver */
787 response = ezusb_set_reset(serial, 0);
789 /* we want this device to fail to have a driver assigned to it. */
793 static int keyspan_pda_startup (struct usb_serial *serial)
796 struct keyspan_pda_private *priv;
798 /* allocate the private data structures for all ports. Well, for all
801 priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
803 return (1); /* error */
804 usb_set_serial_port_data(serial->port[0], priv);
805 init_waitqueue_head(&serial->port[0]->write_wait);
806 INIT_WORK(&priv->wakeup_work, (void *)keyspan_pda_wakeup_write,
807 (void *)(&serial->port[0]));
808 INIT_WORK(&priv->unthrottle_work,
809 (void *)keyspan_pda_request_unthrottle,
814 static void keyspan_pda_shutdown (struct usb_serial *serial)
816 dbg("%s", __FUNCTION__);
818 kfree(usb_get_serial_port_data(serial->port[0]));
822 static struct usb_serial_device_type keyspan_pda_fake_device = {
823 .owner = THIS_MODULE,
824 .name = "Keyspan PDA - (prerenumeration)",
825 .short_name = "keyspan_pda_pre",
826 .id_table = id_table_fake,
827 .num_interrupt_in = NUM_DONT_CARE,
828 .num_bulk_in = NUM_DONT_CARE,
829 .num_bulk_out = NUM_DONT_CARE,
831 .attach = keyspan_pda_fake_startup,
836 static struct usb_serial_device_type xircom_pgs_fake_device = {
837 .owner = THIS_MODULE,
838 .name = "Xircom / Entregra PGS - (prerenumeration)",
839 .short_name = "xircom_no_firm",
840 .id_table = id_table_fake_xircom,
841 .num_interrupt_in = NUM_DONT_CARE,
842 .num_bulk_in = NUM_DONT_CARE,
843 .num_bulk_out = NUM_DONT_CARE,
845 .attach = keyspan_pda_fake_startup,
849 static struct usb_serial_device_type keyspan_pda_device = {
850 .owner = THIS_MODULE,
851 .name = "Keyspan PDA",
852 .short_name = "keyspan_pda",
853 .id_table = id_table_std,
854 .num_interrupt_in = 1,
858 .open = keyspan_pda_open,
859 .close = keyspan_pda_close,
860 .write = keyspan_pda_write,
861 .write_room = keyspan_pda_write_room,
862 .write_bulk_callback = keyspan_pda_write_bulk_callback,
863 .read_int_callback = keyspan_pda_rx_interrupt,
864 .chars_in_buffer = keyspan_pda_chars_in_buffer,
865 .throttle = keyspan_pda_rx_throttle,
866 .unthrottle = keyspan_pda_rx_unthrottle,
867 .ioctl = keyspan_pda_ioctl,
868 .set_termios = keyspan_pda_set_termios,
869 .break_ctl = keyspan_pda_break_ctl,
870 .tiocmget = keyspan_pda_tiocmget,
871 .tiocmset = keyspan_pda_tiocmset,
872 .attach = keyspan_pda_startup,
873 .shutdown = keyspan_pda_shutdown,
877 static int __init keyspan_pda_init (void)
880 retval = usb_serial_register(&keyspan_pda_device);
882 goto failed_pda_register;
884 retval = usb_serial_register(&keyspan_pda_fake_device);
886 goto failed_pda_fake_register;
889 retval = usb_serial_register(&xircom_pgs_fake_device);
891 goto failed_xircom_register;
893 retval = usb_register(&keyspan_pda_driver);
895 goto failed_usb_register;
896 info(DRIVER_DESC " " DRIVER_VERSION);
900 usb_serial_deregister(&xircom_pgs_fake_device);
901 failed_xircom_register:
904 usb_serial_deregister(&keyspan_pda_fake_device);
907 failed_pda_fake_register:
909 usb_serial_deregister(&keyspan_pda_device);
915 static void __exit keyspan_pda_exit (void)
917 usb_deregister (&keyspan_pda_driver);
918 usb_serial_deregister (&keyspan_pda_device);
920 usb_serial_deregister (&keyspan_pda_fake_device);
923 usb_serial_deregister (&xircom_pgs_fake_device);
928 module_init(keyspan_pda_init);
929 module_exit(keyspan_pda_exit);
931 MODULE_AUTHOR( DRIVER_AUTHOR );
932 MODULE_DESCRIPTION( DRIVER_DESC );
933 MODULE_LICENSE("GPL");
935 MODULE_PARM(debug, "i");
936 MODULE_PARM_DESC(debug, "Debug enabled or not");