2 * KOBIL USB Smart Card Terminal Driver
4 * Copyright (C) 2002 KOBIL Systems GmbH
5 * Author: Thomas Wahrenbruch
7 * Contact: linuxusb@kobil.de
9 * This program is largely derived from work by the linux-usb group
10 * and associated source files. Please see the usb/serial files for
11 * individual credits and copyrights.
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
21 * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
22 * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
25 * Fix bug with P'n'P readers
28 * Add support for KAAN SIM
38 #include <linux/kernel.h>
39 #include <linux/errno.h>
40 #include <linux/init.h>
41 #include <linux/slab.h>
42 #include <linux/tty.h>
43 #include <linux/tty_driver.h>
44 #include <linux/tty_flip.h>
45 #include <linux/module.h>
46 #include <linux/spinlock.h>
47 #include <asm/uaccess.h>
48 #include <linux/usb.h>
49 #include <linux/usb/serial.h>
50 #include <linux/ioctl.h>
51 #include "kobil_sct.h"
55 /* Version Information */
56 #define DRIVER_VERSION "21/05/2004"
57 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
58 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
60 #define KOBIL_VENDOR_ID 0x0D46
61 #define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011
62 #define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012
63 #define KOBIL_USBTWIN_PRODUCT_ID 0x0078
64 #define KOBIL_KAAN_SIM_PRODUCT_ID 0x0081
66 #define KOBIL_TIMEOUT 500
67 #define KOBIL_BUF_LENGTH 300
70 /* Function prototypes */
71 static int kobil_startup (struct usb_serial *serial);
72 static void kobil_shutdown (struct usb_serial *serial);
73 static int kobil_open (struct usb_serial_port *port, struct file *filp);
74 static void kobil_close (struct usb_serial_port *port, struct file *filp);
75 static int kobil_write (struct usb_serial_port *port,
76 const unsigned char *buf, int count);
77 static int kobil_write_room(struct usb_serial_port *port);
78 static int kobil_ioctl(struct usb_serial_port *port, struct file *file,
79 unsigned int cmd, unsigned long arg);
80 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file);
81 static int kobil_tiocmset(struct usb_serial_port *port, struct file *file,
82 unsigned int set, unsigned int clear);
83 static void kobil_read_int_callback( struct urb *urb );
84 static void kobil_write_callback( struct urb *purb );
87 static struct usb_device_id id_table [] = {
88 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
89 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
90 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
91 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
92 { } /* Terminating entry */
96 MODULE_DEVICE_TABLE (usb, id_table);
98 static struct usb_driver kobil_driver = {
100 .probe = usb_serial_probe,
101 .disconnect = usb_serial_disconnect,
102 .id_table = id_table,
107 static struct usb_serial_driver kobil_device = {
109 .owner = THIS_MODULE,
112 .description = "KOBIL USB smart card terminal",
113 .id_table = id_table,
114 .num_interrupt_in = NUM_DONT_CARE,
118 .attach = kobil_startup,
119 .shutdown = kobil_shutdown,
120 .ioctl = kobil_ioctl,
121 .tiocmget = kobil_tiocmget,
122 .tiocmset = kobil_tiocmset,
124 .close = kobil_close,
125 .write = kobil_write,
126 .write_room = kobil_write_room,
127 .read_int_callback = kobil_read_int_callback,
131 struct kobil_private {
132 int write_int_endpoint_address;
133 int read_int_endpoint_address;
134 unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
135 int filled; // index of the last char in buf
136 int cur_pos; // index of the next char to send in buf
139 struct termios internal_termios;
143 static int kobil_startup (struct usb_serial *serial)
146 struct kobil_private *priv;
147 struct usb_device *pdev;
148 struct usb_host_config *actconfig;
149 struct usb_interface *interface;
150 struct usb_host_interface *altsetting;
151 struct usb_host_endpoint *endpoint;
153 priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
160 priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
161 priv->line_state = 0;
163 switch (priv->device_type){
164 case KOBIL_ADAPTER_B_PRODUCT_ID:
165 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
167 case KOBIL_ADAPTER_K_PRODUCT_ID:
168 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
170 case KOBIL_USBTWIN_PRODUCT_ID:
171 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
173 case KOBIL_KAAN_SIM_PRODUCT_ID:
174 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
177 usb_set_serial_port_data(serial->port[0], priv);
179 // search for the necessary endpoints
181 actconfig = pdev->actconfig;
182 interface = actconfig->interface[0];
183 altsetting = interface->cur_altsetting;
184 endpoint = altsetting->endpoint;
186 for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
187 endpoint = &altsetting->endpoint[i];
188 if (usb_endpoint_is_int_out(&endpoint->desc)) {
189 dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
190 priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
192 if (usb_endpoint_is_int_in(&endpoint->desc)) {
193 dbg("%s Found interrupt in endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
194 priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
201 static void kobil_shutdown (struct usb_serial *serial)
204 dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
206 for (i=0; i < serial->num_ports; ++i) {
207 while (serial->port[i]->open_count > 0) {
208 kobil_close (serial->port[i], NULL);
210 kfree(usb_get_serial_port_data(serial->port[i]));
211 usb_set_serial_port_data(serial->port[i], NULL);
216 static int kobil_open (struct usb_serial_port *port, struct file *filp)
219 struct kobil_private *priv;
220 unsigned char *transfer_buffer;
221 int transfer_buffer_length = 8;
222 int write_urb_transfer_buffer_length = 8;
224 dbg("%s - port %d", __FUNCTION__, port->number);
225 priv = usb_get_serial_port_data(port);
226 priv->line_state = 0;
228 // someone sets the dev to 0 if the close method has been called
229 port->interrupt_in_urb->dev = port->serial->dev;
232 /* force low_latency on so that our tty_push actually forces
233 * the data through, otherwise it is scheduled, and with high
234 * data rates (like with OHCI) data can get lost.
236 port->tty->low_latency = 1;
238 // without this, every push_tty_char is echoed :-(
239 port->tty->termios->c_lflag = 0;
240 port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
241 port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
242 port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
244 // set up internal termios structure
245 priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
246 priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
247 priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
248 priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
250 for (i=0; i<NCCS; i++) {
251 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
254 // allocate memory for transfer buffer
255 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
256 if (! transfer_buffer) {
260 // allocate write_urb
261 if (!port->write_urb) {
262 dbg("%s - port %d Allocating port->write_urb", __FUNCTION__, port->number);
263 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
264 if (!port->write_urb) {
265 dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
266 kfree(transfer_buffer);
271 // allocate memory for write_urb transfer buffer
272 port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
273 if (! port->write_urb->transfer_buffer) {
274 kfree(transfer_buffer);
275 usb_free_urb(port->write_urb);
276 port->write_urb = NULL;
280 // get hardware version
281 result = usb_control_msg( port->serial->dev,
282 usb_rcvctrlpipe(port->serial->dev, 0 ),
283 SUSBCRequest_GetMisc,
284 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
285 SUSBCR_MSC_GetHWVersion,
288 transfer_buffer_length,
291 dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
292 dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
294 // get firmware version
295 result = usb_control_msg( port->serial->dev,
296 usb_rcvctrlpipe(port->serial->dev, 0 ),
297 SUSBCRequest_GetMisc,
298 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
299 SUSBCR_MSC_GetFWVersion,
302 transfer_buffer_length,
305 dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
306 dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
308 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
309 // Setting Baudrate, Parity and Stopbits
310 result = usb_control_msg( port->serial->dev,
311 usb_rcvctrlpipe(port->serial->dev, 0 ),
312 SUSBCRequest_SetBaudRateParityAndStopBits,
313 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
314 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
320 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
323 result = usb_control_msg( port->serial->dev,
324 usb_rcvctrlpipe(port->serial->dev, 0 ),
326 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
327 SUSBCR_MSC_ResetAllQueues,
333 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
335 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
336 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
337 // start reading (Adapter B 'cause PNP string)
338 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
339 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
342 kfree(transfer_buffer);
347 static void kobil_close (struct usb_serial_port *port, struct file *filp)
349 dbg("%s - port %d", __FUNCTION__, port->number);
351 if (port->write_urb) {
352 usb_kill_urb(port->write_urb);
353 usb_free_urb( port->write_urb );
354 port->write_urb = NULL;
356 usb_kill_urb(port->interrupt_in_urb);
360 static void kobil_read_int_callback( struct urb *purb)
363 struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
364 struct tty_struct *tty;
365 unsigned char *data = purb->transfer_buffer;
368 dbg("%s - port %d", __FUNCTION__, port->number);
371 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
376 if (purb->actual_length) {
380 dbg_data = kzalloc((3 * purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
384 for (i = 0; i < purb->actual_length; i++) {
385 sprintf(dbg_data +3*i, "%02X ", data[i]);
387 dbg(" <-- %s", dbg_data );
392 tty_buffer_request_room(tty, purb->actual_length);
393 tty_insert_flip_string(tty, data, purb->actual_length);
394 tty_flip_buffer_push(tty);
397 // someone sets the dev to 0 if the close method has been called
398 port->interrupt_in_urb->dev = port->serial->dev;
400 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
401 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
405 static void kobil_write_callback( struct urb *purb )
410 static int kobil_write (struct usb_serial_port *port,
411 const unsigned char *buf, int count)
416 struct kobil_private * priv;
419 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
423 priv = usb_get_serial_port_data(port);
425 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
426 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
430 // Copy data to buffer
431 memcpy (priv->buf + priv->filled, buf, count);
433 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
435 priv->filled = priv->filled + count;
438 // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
439 if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
440 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
442 // stop reading (except TWIN and KAAN SIM)
443 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
444 usb_kill_urb(port->interrupt_in_urb);
446 todo = priv->filled - priv->cur_pos;
449 // max 8 byte in one urb (endpoint size)
450 length = (todo < 8) ? todo : 8;
451 // copy data to transfer buffer
452 memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
453 usb_fill_int_urb( port->write_urb,
455 usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
456 port->write_urb->transfer_buffer,
458 kobil_write_callback,
463 priv->cur_pos = priv->cur_pos + length;
464 result = usb_submit_urb( port->write_urb, GFP_NOIO );
465 dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
466 todo = priv->filled - priv->cur_pos;
477 // someone sets the dev to 0 if the close method has been called
478 port->interrupt_in_urb->dev = port->serial->dev;
480 // start reading (except TWIN and KAAN SIM)
481 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
482 // someone sets the dev to 0 if the close method has been called
483 port->interrupt_in_urb->dev = port->serial->dev;
485 result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
486 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
493 static int kobil_write_room (struct usb_serial_port *port)
495 //dbg("%s - port %d", __FUNCTION__, port->number);
500 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
502 struct kobil_private * priv;
504 unsigned char *transfer_buffer;
505 int transfer_buffer_length = 8;
507 priv = usb_get_serial_port_data(port);
508 if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
509 // This device doesn't support ioctl calls
513 // allocate memory for transfer buffer
514 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
515 if (!transfer_buffer) {
519 result = usb_control_msg( port->serial->dev,
520 usb_rcvctrlpipe(port->serial->dev, 0 ),
521 SUSBCRequest_GetStatusLineState,
522 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
526 transfer_buffer_length,
529 dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
530 __FUNCTION__, port->number, result, transfer_buffer[0]);
532 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
533 priv->line_state |= TIOCM_DSR;
535 priv->line_state &= ~TIOCM_DSR;
538 kfree(transfer_buffer);
539 return priv->line_state;
542 static int kobil_tiocmset(struct usb_serial_port *port, struct file *file,
543 unsigned int set, unsigned int clear)
545 struct kobil_private * priv;
549 unsigned char *transfer_buffer;
550 int transfer_buffer_length = 8;
552 priv = usb_get_serial_port_data(port);
553 if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
554 // This device doesn't support ioctl calls
558 // allocate memory for transfer buffer
559 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
560 if (! transfer_buffer) {
568 if (clear & TIOCM_RTS)
570 if (clear & TIOCM_DTR)
573 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
575 dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
577 dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
578 result = usb_control_msg( port->serial->dev,
579 usb_rcvctrlpipe(port->serial->dev, 0 ),
580 SUSBCRequest_SetStatusLinesOrQueues,
581 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
582 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
589 dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
591 dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
592 result = usb_control_msg( port->serial->dev,
593 usb_rcvctrlpipe(port->serial->dev, 0 ),
594 SUSBCRequest_SetStatusLinesOrQueues,
595 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
596 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
602 dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
603 kfree(transfer_buffer);
604 return (result < 0) ? result : 0;
608 static int kobil_ioctl(struct usb_serial_port *port, struct file *file,
609 unsigned int cmd, unsigned long arg)
611 struct kobil_private * priv;
613 unsigned short urb_val = 0;
614 unsigned char *transfer_buffer;
615 int transfer_buffer_length = 8;
617 void __user *user_arg = (void __user *)arg;
619 priv = usb_get_serial_port_data(port);
620 if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
621 // This device doesn't support ioctl calls
626 case TCGETS: // 0x5401
627 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) {
628 dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
631 if (kernel_termios_to_user_termios((struct termios __user *)arg,
632 &priv->internal_termios))
636 case TCSETS: // 0x5402
637 if (!(port->tty->termios)) {
638 dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
641 if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) {
642 dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
645 if (user_termios_to_kernel_termios(&priv->internal_termios,
646 (struct termios __user *)arg))
649 settings = kzalloc(50, GFP_KERNEL);
654 switch (priv->internal_termios.c_cflag & CBAUD) {
656 urb_val = SUSBCR_SBR_1200;
657 strcat(settings, "1200 ");
661 urb_val = SUSBCR_SBR_9600;
662 strcat(settings, "9600 ");
666 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
667 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
669 if (priv->internal_termios.c_cflag & PARENB) {
670 if (priv->internal_termios.c_cflag & PARODD) {
671 urb_val |= SUSBCR_SPASB_OddParity;
672 strcat(settings, "Odd Parity");
674 urb_val |= SUSBCR_SPASB_EvenParity;
675 strcat(settings, "Even Parity");
678 urb_val |= SUSBCR_SPASB_NoParity;
679 strcat(settings, "No Parity");
681 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
683 result = usb_control_msg( port->serial->dev,
684 usb_rcvctrlpipe(port->serial->dev, 0 ),
685 SUSBCRequest_SetBaudRateParityAndStopBits,
686 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
694 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
698 case TCFLSH: // 0x540B
699 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
700 if (! transfer_buffer) {
704 result = usb_control_msg( port->serial->dev,
705 usb_rcvctrlpipe(port->serial->dev, 0 ),
707 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
708 SUSBCR_MSC_ResetAllQueues,
710 NULL,//transfer_buffer,
715 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
717 kfree(transfer_buffer);
718 return ((result < 0) ? -EFAULT : 0);
725 static int __init kobil_init (void)
728 retval = usb_serial_register(&kobil_device);
730 goto failed_usb_serial_register;
731 retval = usb_register(&kobil_driver);
733 goto failed_usb_register;
735 info(DRIVER_VERSION " " DRIVER_AUTHOR);
740 usb_serial_deregister(&kobil_device);
741 failed_usb_serial_register:
746 static void __exit kobil_exit (void)
748 usb_deregister (&kobil_driver);
749 usb_serial_deregister (&kobil_device);
752 module_init(kobil_init);
753 module_exit(kobil_exit);
755 MODULE_AUTHOR( DRIVER_AUTHOR );
756 MODULE_DESCRIPTION( DRIVER_DESC );
757 MODULE_LICENSE( "GPL" );
759 module_param(debug, bool, S_IRUGO | S_IWUSR);
760 MODULE_PARM_DESC(debug, "Debug enabled or not");