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