drivers/usb/serial/kobil_sct.c

   1 /*
   2  *  KOBIL USB Smart Card Terminal Driver
   3  *
   4  *  Copyright (C) 2002  KOBIL Systems GmbH
   5  *  Author: Thomas Wahrenbruch
   6  *
   7  *  Contact: linuxusb@kobil.de
   8  *
   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.
  12  *
  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.
  17  *
  18  *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
  19  *  patience.
  20  *
  21  * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
  22  * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
  23  *
  24  * (21/05/2004) tw
  25  *      Fix bug with P'n'P readers
  26  *
  27  * (28/05/2003) tw
  28  *      Add support for KAAN SIM
  29  *
  30  * (12/09/2002) tw
  31  *      Adapted to 2.5.
  32  *
  33  * (11/08/2002) tw
  34  *      Initial version.
  35  */
  36
  37
  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"
  52
  53 static int debug;
  54
  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)"
  59
  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
  65
  66 #define KOBIL_TIMEOUT           500
  67 #define KOBIL_BUF_LENGTH        300
  68
  69
  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 );
  85 static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old);
  86
  87
  88 static struct usb_device_id id_table [] = {
  89         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  90         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  91         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  92         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  93         { }                     /* Terminating entry */
  94 };
  95
  96
  97 MODULE_DEVICE_TABLE (usb, id_table);
  98
  99 static struct usb_driver kobil_driver = {
 100         .name =         "kobil",
 101         .probe =        usb_serial_probe,
 102         .disconnect =   usb_serial_disconnect,
 103         .id_table =     id_table,
 104         .no_dynamic_id =        1,
 105 };
 106
 107
 108 static struct usb_serial_driver kobil_device = {
 109         .driver = {
 110                 .owner =        THIS_MODULE,
 111                 .name =         "kobil",
 112         },
 113         .description =          "KOBIL USB smart card terminal",
 114         .usb_driver =           &kobil_driver,
 115         .id_table =             id_table,
 116         .num_interrupt_in =     NUM_DONT_CARE,
 117         .num_interrupt_out =    NUM_DONT_CARE,
 118         .num_bulk_in =          0,
 119         .num_bulk_out =         0,
 120         .num_ports =            1,
 121         .attach =               kobil_startup,
 122         .shutdown =             kobil_shutdown,
 123         .ioctl =                kobil_ioctl,
 124         .set_termios =          kobil_set_termios,
 125         .tiocmget =             kobil_tiocmget,
 126         .tiocmset =             kobil_tiocmset,
 127         .open =                 kobil_open,
 128         .close =                kobil_close,
 129         .write =                kobil_write,
 130         .write_room =           kobil_write_room,
 131         .read_int_callback =    kobil_read_int_callback,
 132 };
 133
 134
 135 struct kobil_private {
 136         int write_int_endpoint_address;
 137         int read_int_endpoint_address;
 138         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
 139         int filled;  // index of the last char in buf
 140         int cur_pos; // index of the next char to send in buf
 141         __u16 device_type;
 142         int line_state;
 143 };
 144
 145
 146 static int kobil_startup (struct usb_serial *serial)
 147 {
 148         int i;
 149         struct kobil_private *priv;
 150         struct usb_device *pdev;
 151         struct usb_host_config *actconfig;
 152         struct usb_interface *interface;
 153         struct usb_host_interface *altsetting;
 154         struct usb_host_endpoint *endpoint;
 155
 156         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 157         if (!priv){
 158                 return -ENOMEM;
 159         }
 160
 161         priv->filled = 0;
 162         priv->cur_pos = 0;
 163         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 164         priv->line_state = 0;
 165
 166         switch (priv->device_type){
 167         case KOBIL_ADAPTER_B_PRODUCT_ID:
 168                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 169                 break;
 170         case KOBIL_ADAPTER_K_PRODUCT_ID:
 171                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 172                 break;
 173         case KOBIL_USBTWIN_PRODUCT_ID:
 174                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 175                 break;
 176         case KOBIL_KAAN_SIM_PRODUCT_ID:
 177                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 178                 break;
 179         }
 180         usb_set_serial_port_data(serial->port[0], priv);
 181
 182         // search for the necessary endpoints
 183         pdev = serial->dev;
 184         actconfig = pdev->actconfig;
 185         interface = actconfig->interface[0];
 186         altsetting = interface->cur_altsetting;
 187         endpoint = altsetting->endpoint;
 188
 189         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 190                 endpoint = &altsetting->endpoint[i];
 191                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 192                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 193                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 194                 }
 195                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 196                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 197                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 198                 }
 199         }
 200         return 0;
 201 }
 202
 203
 204 static void kobil_shutdown (struct usb_serial *serial)
 205 {
 206         int i;
 207         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
 208
 209         for (i=0; i < serial->num_ports; ++i) {
 210                 while (serial->port[i]->open_count > 0) {
 211                         kobil_close (serial->port[i], NULL);
 212                 }
 213                 kfree(usb_get_serial_port_data(serial->port[i]));
 214                 usb_set_serial_port_data(serial->port[i], NULL);
 215         }
 216 }
 217
 218
 219 static int kobil_open (struct usb_serial_port *port, struct file *filp)
 220 {
 221         int result = 0;
 222         struct kobil_private *priv;
 223         unsigned char *transfer_buffer;
 224         int transfer_buffer_length = 8;
 225         int write_urb_transfer_buffer_length = 8;
 226
 227         dbg("%s - port %d", __FUNCTION__, port->number);
 228         priv = usb_get_serial_port_data(port);
 229         priv->line_state = 0;
 230
 231         // someone sets the dev to 0 if the close method has been called
 232         port->interrupt_in_urb->dev = port->serial->dev;
 233
 234
 235         /* force low_latency on so that our tty_push actually forces
 236          * the data through, otherwise it is scheduled, and with high
 237          * data rates (like with OHCI) data can get lost.
 238          */
 239         port->tty->low_latency = 1;
 240
 241         // without this, every push_tty_char is echoed :-(
 242         port->tty->termios->c_lflag = 0;
 243         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 244         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 245         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
 246
 247         // allocate memory for transfer buffer
 248         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 249         if (! transfer_buffer) {
 250                 return -ENOMEM;
 251         }
 252
 253         // allocate write_urb
 254         if (!port->write_urb) {
 255                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
 256                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 257                 if (!port->write_urb) {
 258                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
 259                         kfree(transfer_buffer);
 260                         return -ENOMEM;
 261                 }
 262         }
 263
 264         // allocate memory for write_urb transfer buffer
 265         port->write_urb->transfer_buffer = kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 266         if (! port->write_urb->transfer_buffer) {
 267                 kfree(transfer_buffer);
 268                 usb_free_urb(port->write_urb);
 269                 port->write_urb = NULL;
 270                 return -ENOMEM;
 271         }
 272
 273         // get hardware version
 274         result = usb_control_msg( port->serial->dev,
 275                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 276                                   SUSBCRequest_GetMisc,
 277                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 278                                   SUSBCR_MSC_GetHWVersion,
 279                                   0,
 280                                   transfer_buffer,
 281                                   transfer_buffer_length,
 282                                   KOBIL_TIMEOUT
 283                 );
 284         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
 285         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 286
 287         // get firmware version
 288         result = usb_control_msg( port->serial->dev,
 289                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 290                                   SUSBCRequest_GetMisc,
 291                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 292                                   SUSBCR_MSC_GetFWVersion,
 293                                   0,
 294                                   transfer_buffer,
 295                                   transfer_buffer_length,
 296                                   KOBIL_TIMEOUT
 297                 );
 298         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
 299         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 300
 301         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 302                 // Setting Baudrate, Parity and Stopbits
 303                 result = usb_control_msg( port->serial->dev,
 304                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 305                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 306                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 307                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 308                                           0,
 309                                           transfer_buffer,
 310                                           0,
 311                                           KOBIL_TIMEOUT
 312                         );
 313                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 314
 315                 // reset all queues
 316                 result = usb_control_msg( port->serial->dev,
 317                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 318                                           SUSBCRequest_Misc,
 319                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 320                                           SUSBCR_MSC_ResetAllQueues,
 321                                           0,
 322                                           transfer_buffer,
 323                                           0,
 324                                           KOBIL_TIMEOUT
 325                         );
 326                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
 327         }
 328         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 329             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 330                 // start reading (Adapter B 'cause PNP string)
 331                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 332                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 333         }
 334
 335         kfree(transfer_buffer);
 336         return 0;
 337 }
 338
 339
 340 static void kobil_close (struct usb_serial_port *port, struct file *filp)
 341 {
 342         dbg("%s - port %d", __FUNCTION__, port->number);
 343
 344         if (port->write_urb) {
 345                 usb_kill_urb(port->write_urb);
 346                 usb_free_urb( port->write_urb );
 347                 port->write_urb = NULL;
 348         }
 349         usb_kill_urb(port->interrupt_in_urb);
 350 }
 351
 352
 353 static void kobil_read_int_callback(struct urb *urb)
 354 {
 355         int result;
 356         struct usb_serial_port *port = urb->context;
 357         struct tty_struct *tty;
 358         unsigned char *data = urb->transfer_buffer;
 359         int status = urb->status;
 360 //      char *dbg_data;
 361
 362         dbg("%s - port %d", __FUNCTION__, port->number);
 363
 364         if (status) {
 365                 dbg("%s - port %d Read int status not zero: %d",
 366                     __FUNCTION__, port->number, status);
 367                 return;
 368         }
 369
 370         tty = port->tty;
 371         if (urb->actual_length) {
 372
 373                 // BEGIN DEBUG
 374                 /*
 375                   dbg_data = kzalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 376                   if (! dbg_data) {
 377                   return;
 378                   }
 379                   for (i = 0; i < purb->actual_length; i++) {
 380                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 381                   }
 382                   dbg(" <-- %s", dbg_data );
 383                   kfree(dbg_data);
 384                 */
 385                 // END DEBUG
 386
 387                 tty_buffer_request_room(tty, urb->actual_length);
 388                 tty_insert_flip_string(tty, data, urb->actual_length);
 389                 tty_flip_buffer_push(tty);
 390         }
 391
 392         // someone sets the dev to 0 if the close method has been called
 393         port->interrupt_in_urb->dev = port->serial->dev;
 394
 395         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 396         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 397 }
 398
 399
 400 static void kobil_write_callback( struct urb *purb )
 401 {
 402 }
 403
 404
 405 static int kobil_write (struct usb_serial_port *port,
 406                         const unsigned char *buf, int count)
 407 {
 408         int length = 0;
 409         int result = 0;
 410         int todo = 0;
 411         struct kobil_private * priv;
 412
 413         if (count == 0) {
 414                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
 415                 return 0;
 416         }
 417
 418         priv = usb_get_serial_port_data(port);
 419
 420         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 421                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
 422                 return -ENOMEM;
 423         }
 424
 425         // Copy data to buffer
 426         memcpy (priv->buf + priv->filled, buf, count);
 427
 428         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
 429
 430         priv->filled = priv->filled + count;
 431
 432
 433         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 434         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 435              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 436
 437                 // stop reading (except TWIN and KAAN SIM)
 438                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
 439                         usb_kill_urb(port->interrupt_in_urb);
 440
 441                 todo = priv->filled - priv->cur_pos;
 442
 443                 while(todo > 0) {
 444                         // max 8 byte in one urb (endpoint size)
 445                         length = (todo < 8) ? todo : 8;
 446                         // copy data to transfer buffer
 447                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 448                         usb_fill_int_urb( port->write_urb,
 449                                           port->serial->dev,
 450                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 451                                           port->write_urb->transfer_buffer,
 452                                           length,
 453                                           kobil_write_callback,
 454                                           port,
 455                                           8
 456                                 );
 457
 458                         priv->cur_pos = priv->cur_pos + length;
 459                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 460                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
 461                         todo = priv->filled - priv->cur_pos;
 462
 463                         if (todo > 0) {
 464                                 msleep(24);
 465                         }
 466
 467                 } // end while
 468
 469                 priv->filled = 0;
 470                 priv->cur_pos = 0;
 471
 472                 // someone sets the dev to 0 if the close method has been called
 473                 port->interrupt_in_urb->dev = port->serial->dev;
 474
 475                 // start reading (except TWIN and KAAN SIM)
 476                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 477                         // someone sets the dev to 0 if the close method has been called
 478                         port->interrupt_in_urb->dev = port->serial->dev;
 479
 480                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 481                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 482                 }
 483         }
 484         return count;
 485 }
 486
 487
 488 static int kobil_write_room (struct usb_serial_port *port)
 489 {
 490         //dbg("%s - port %d", __FUNCTION__, port->number);
 491         return 8;
 492 }
 493
 494
 495 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
 496 {
 497         struct kobil_private * priv;
 498         int result;
 499         unsigned char *transfer_buffer;
 500         int transfer_buffer_length = 8;
 501
 502         priv = usb_get_serial_port_data(port);
 503         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 504                 // This device doesn't support ioctl calls
 505                 return -EINVAL;
 506         }
 507
 508         // allocate memory for transfer buffer
 509         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 510         if (!transfer_buffer) {
 511                 return -ENOMEM;
 512         }
 513
 514         result = usb_control_msg( port->serial->dev,
 515                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 516                                   SUSBCRequest_GetStatusLineState,
 517                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 518                                   0,
 519                                   0,
 520                                   transfer_buffer,
 521                                   transfer_buffer_length,
 522                                   KOBIL_TIMEOUT);
 523
 524         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 525             __FUNCTION__, port->number, result, transfer_buffer[0]);
 526
 527         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
 528                 priv->line_state |= TIOCM_DSR;
 529         } else {
 530                 priv->line_state &= ~TIOCM_DSR;
 531         }
 532
 533         kfree(transfer_buffer);
 534         return priv->line_state;
 535 }
 536
 537 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
 538                            unsigned int set, unsigned int clear)
 539 {
 540         struct kobil_private * priv;
 541         int result;
 542         int dtr = 0;
 543         int rts = 0;
 544         unsigned char *transfer_buffer;
 545         int transfer_buffer_length = 8;
 546
 547         priv = usb_get_serial_port_data(port);
 548         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 549                 // This device doesn't support ioctl calls
 550                 return -EINVAL;
 551         }
 552
 553         // allocate memory for transfer buffer
 554         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 555         if (! transfer_buffer) {
 556                 return -ENOMEM;
 557         }
 558
 559         if (set & TIOCM_RTS)
 560                 rts = 1;
 561         if (set & TIOCM_DTR)
 562                 dtr = 1;
 563         if (clear & TIOCM_RTS)
 564                 rts = 0;
 565         if (clear & TIOCM_DTR)
 566                 dtr = 0;
 567
 568         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 569                 if (dtr != 0)
 570                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
 571                 else
 572                         dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
 573                 result = usb_control_msg( port->serial->dev,
 574                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 575                                           SUSBCRequest_SetStatusLinesOrQueues,
 576                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 577                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 578                                           0,
 579                                           transfer_buffer,
 580                                           0,
 581                                           KOBIL_TIMEOUT);
 582         } else {
 583                 if (rts != 0)
 584                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
 585                 else
 586                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
 587                 result = usb_control_msg( port->serial->dev,
 588                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 589                                           SUSBCRequest_SetStatusLinesOrQueues,
 590                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 591                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 592                                           0,
 593                                           transfer_buffer,
 594                                           0,
 595                                           KOBIL_TIMEOUT);
 596         }
 597         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
 598         kfree(transfer_buffer);
 599         return (result < 0) ? result : 0;
 600 }
 601
 602 static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old)
 603 {
 604         struct kobil_private * priv;
 605         int result;
 606         unsigned short urb_val = 0;
 607         int c_cflag = port->tty->termios->c_cflag;
 608         speed_t speed;
 609         void * settings;
 610
 611         priv = usb_get_serial_port_data(port);
 612         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 613                 // This device doesn't support ioctl calls
 614                 return;
 615
 616         switch (speed = tty_get_baud_rate(port->tty)) {
 617                 case 1200:
 618                         urb_val = SUSBCR_SBR_1200;
 619                         break;
 620                 default:
 621                         speed = 9600;
 622                 case 9600:
 623                         urb_val = SUSBCR_SBR_9600;
 624                         break;
 625         }
 626         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 627
 628         settings = kzalloc(50, GFP_KERNEL);
 629         if (! settings)
 630                 return;
 631
 632         sprintf(settings, "%d ", speed);
 633
 634         if (c_cflag & PARENB) {
 635                 if  (c_cflag & PARODD) {
 636                         urb_val |= SUSBCR_SPASB_OddParity;
 637                         strcat(settings, "Odd Parity");
 638                 } else {
 639                         urb_val |= SUSBCR_SPASB_EvenParity;
 640                         strcat(settings, "Even Parity");
 641                 }
 642         } else {
 643                 urb_val |= SUSBCR_SPASB_NoParity;
 644                 strcat(settings, "No Parity");
 645         }
 646         port->tty->termios->c_cflag &= ~CMSPAR;
 647         tty_encode_baud_rate(port->tty, speed, speed);
 648
 649         result = usb_control_msg( port->serial->dev,
 650                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 651                                   SUSBCRequest_SetBaudRateParityAndStopBits,
 652                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 653                                   urb_val,
 654                                   0,
 655                                   settings,
 656                                   0,
 657                                   KOBIL_TIMEOUT
 658                 );
 659         kfree(settings);
 660 }
 661
 662 static int kobil_ioctl(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
 663 {
 664         struct kobil_private * priv = usb_get_serial_port_data(port);
 665         unsigned char *transfer_buffer;
 666         int transfer_buffer_length = 8;
 667         int result;
 668
 669         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 670                 // This device doesn't support ioctl calls
 671                 return 0;
 672
 673         switch (cmd) {
 674         case TCFLSH:   // 0x540B
 675                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 676                 if (! transfer_buffer)
 677                         return -ENOBUFS;
 678
 679                 result = usb_control_msg( port->serial->dev,
 680                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 681                                           SUSBCRequest_Misc,
 682                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 683                                           SUSBCR_MSC_ResetAllQueues,
 684                                           0,
 685                                           NULL,//transfer_buffer,
 686                                           0,
 687                                           KOBIL_TIMEOUT
 688                         );
 689
 690                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
 691                 kfree(transfer_buffer);
 692                 return (result < 0) ? -EFAULT : 0;
 693         default:
 694                 return -ENOIOCTLCMD;
 695         }
 696 }
 697
 698 static int __init kobil_init (void)
 699 {
 700         int retval;
 701         retval = usb_serial_register(&kobil_device);
 702         if (retval)
 703                 goto failed_usb_serial_register;
 704         retval = usb_register(&kobil_driver);
 705         if (retval)
 706                 goto failed_usb_register;
 707
 708         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 709         info(DRIVER_DESC);
 710
 711         return 0;
 712 failed_usb_register:
 713         usb_serial_deregister(&kobil_device);
 714 failed_usb_serial_register:
 715         return retval;
 716 }
 717
 718
 719 static void __exit kobil_exit (void)
 720 {
 721         usb_deregister (&kobil_driver);
 722         usb_serial_deregister (&kobil_device);
 723 }
 724
 725 module_init(kobil_init);
 726 module_exit(kobil_exit);
 727
 728 MODULE_AUTHOR( DRIVER_AUTHOR );
 729 MODULE_DESCRIPTION( DRIVER_DESC );
 730 MODULE_LICENSE( "GPL" );
 731
 732 module_param(debug, bool, S_IRUGO | S_IWUSR);
 733 MODULE_PARM_DESC(debug, "Debug enabled or not");