err.no Git - linux-2.6/blob - 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 };
 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
 164         switch (priv->device_type){
 165         case KOBIL_ADAPTER_B_PRODUCT_ID:
 166                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 167                 break;
 168         case KOBIL_ADAPTER_K_PRODUCT_ID:
 169                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 170                 break;
 171         case KOBIL_USBTWIN_PRODUCT_ID:
 172                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 173                 break;
 174         case KOBIL_KAAN_SIM_PRODUCT_ID:
 175                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 176                 break;
 177         }
 178         usb_set_serial_port_data(serial->port[0], priv);
 179
 180         // search for the necessary endpoints
 181         pdev = serial->dev;
 182         actconfig = pdev->actconfig;
 183         interface = actconfig->interface[0];
 184         altsetting = interface->cur_altsetting;
 185         endpoint = altsetting->endpoint;
 186
 187         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 188                 endpoint = &altsetting->endpoint[i];
 189                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 190                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 191                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 192                 }
 193                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 194                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 195                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 196                 }
 197         }
 198         return 0;
 199 }
 200
 201
 202 static void kobil_shutdown (struct usb_serial *serial)
 203 {
 204         int i;
 205         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
 206
 207         for (i=0; i < serial->num_ports; ++i) {
 208                 while (serial->port[i]->open_count > 0) {
 209                         kobil_close (serial->port[i], NULL);
 210                 }
 211                 kfree(usb_get_serial_port_data(serial->port[i]));
 212                 usb_set_serial_port_data(serial->port[i], NULL);
 213         }
 214 }
 215
 216
 217 static int kobil_open (struct usb_serial_port *port, struct file *filp)
 218 {
 219         int result = 0;
 220         struct kobil_private *priv;
 221         unsigned char *transfer_buffer;
 222         int transfer_buffer_length = 8;
 223         int write_urb_transfer_buffer_length = 8;
 224
 225         dbg("%s - port %d", __FUNCTION__, port->number);
 226         priv = usb_get_serial_port_data(port);
 227
 228         // someone sets the dev to 0 if the close method has been called
 229         port->interrupt_in_urb->dev = port->serial->dev;
 230
 231
 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.
 235          */
 236         port->tty->low_latency = 1;
 237
 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)
 243
 244         // allocate memory for transfer buffer
 245         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 246         if (! transfer_buffer) {
 247                 return -ENOMEM;
 248         }
 249
 250         // allocate write_urb
 251         if (!port->write_urb) {
 252                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
 253                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 254                 if (!port->write_urb) {
 255                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
 256                         kfree(transfer_buffer);
 257                         return -ENOMEM;
 258                 }
 259         }
 260
 261         // allocate memory for write_urb transfer buffer
 262         port->write_urb->transfer_buffer = kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 263         if (! port->write_urb->transfer_buffer) {
 264                 kfree(transfer_buffer);
 265                 usb_free_urb(port->write_urb);
 266                 port->write_urb = NULL;
 267                 return -ENOMEM;
 268         }
 269
 270         // get hardware version
 271         result = usb_control_msg( port->serial->dev,
 272                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 273                                   SUSBCRequest_GetMisc,
 274                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 275                                   SUSBCR_MSC_GetHWVersion,
 276                                   0,
 277                                   transfer_buffer,
 278                                   transfer_buffer_length,
 279                                   KOBIL_TIMEOUT
 280                 );
 281         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
 282         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 283
 284         // get firmware version
 285         result = usb_control_msg( port->serial->dev,
 286                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 287                                   SUSBCRequest_GetMisc,
 288                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 289                                   SUSBCR_MSC_GetFWVersion,
 290                                   0,
 291                                   transfer_buffer,
 292                                   transfer_buffer_length,
 293                                   KOBIL_TIMEOUT
 294                 );
 295         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
 296         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 297
 298         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 299                 // Setting Baudrate, Parity and Stopbits
 300                 result = usb_control_msg( port->serial->dev,
 301                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 302                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 303                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 304                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 305                                           0,
 306                                           transfer_buffer,
 307                                           0,
 308                                           KOBIL_TIMEOUT
 309                         );
 310                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 311
 312                 // reset all queues
 313                 result = usb_control_msg( port->serial->dev,
 314                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 315                                           SUSBCRequest_Misc,
 316                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 317                                           SUSBCR_MSC_ResetAllQueues,
 318                                           0,
 319                                           transfer_buffer,
 320                                           0,
 321                                           KOBIL_TIMEOUT
 322                         );
 323                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
 324         }
 325         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 326             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 327                 // start reading (Adapter B 'cause PNP string)
 328                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 329                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 330         }
 331
 332         kfree(transfer_buffer);
 333         return 0;
 334 }
 335
 336
 337 static void kobil_close (struct usb_serial_port *port, struct file *filp)
 338 {
 339         dbg("%s - port %d", __FUNCTION__, port->number);
 340
 341         if (port->write_urb) {
 342                 usb_kill_urb(port->write_urb);
 343                 usb_free_urb( port->write_urb );
 344                 port->write_urb = NULL;
 345         }
 346         usb_kill_urb(port->interrupt_in_urb);
 347 }
 348
 349
 350 static void kobil_read_int_callback(struct urb *urb)
 351 {
 352         int result;
 353         struct usb_serial_port *port = urb->context;
 354         struct tty_struct *tty;
 355         unsigned char *data = urb->transfer_buffer;
 356         int status = urb->status;
 357 //      char *dbg_data;
 358
 359         dbg("%s - port %d", __FUNCTION__, port->number);
 360
 361         if (status) {
 362                 dbg("%s - port %d Read int status not zero: %d",
 363                     __FUNCTION__, port->number, status);
 364                 return;
 365         }
 366
 367         tty = port->tty;
 368         if (urb->actual_length) {
 369
 370                 // BEGIN DEBUG
 371                 /*
 372                   dbg_data = kzalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 373                   if (! dbg_data) {
 374                   return;
 375                   }
 376                   for (i = 0; i < purb->actual_length; i++) {
 377                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 378                   }
 379                   dbg(" <-- %s", dbg_data );
 380                   kfree(dbg_data);
 381                 */
 382                 // END DEBUG
 383
 384                 tty_buffer_request_room(tty, urb->actual_length);
 385                 tty_insert_flip_string(tty, data, urb->actual_length);
 386                 tty_flip_buffer_push(tty);
 387         }
 388
 389         // someone sets the dev to 0 if the close method has been called
 390         port->interrupt_in_urb->dev = port->serial->dev;
 391
 392         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 393         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 394 }
 395
 396
 397 static void kobil_write_callback( struct urb *purb )
 398 {
 399 }
 400
 401
 402 static int kobil_write (struct usb_serial_port *port,
 403                         const unsigned char *buf, int count)
 404 {
 405         int length = 0;
 406         int result = 0;
 407         int todo = 0;
 408         struct kobil_private * priv;
 409
 410         if (count == 0) {
 411                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
 412                 return 0;
 413         }
 414
 415         priv = usb_get_serial_port_data(port);
 416
 417         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 418                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
 419                 return -ENOMEM;
 420         }
 421
 422         // Copy data to buffer
 423         memcpy (priv->buf + priv->filled, buf, count);
 424
 425         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
 426
 427         priv->filled = priv->filled + count;
 428
 429
 430         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 431         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 432              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 433
 434                 // stop reading (except TWIN and KAAN SIM)
 435                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
 436                         usb_kill_urb(port->interrupt_in_urb);
 437
 438                 todo = priv->filled - priv->cur_pos;
 439
 440                 while(todo > 0) {
 441                         // max 8 byte in one urb (endpoint size)
 442                         length = (todo < 8) ? todo : 8;
 443                         // copy data to transfer buffer
 444                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 445                         usb_fill_int_urb( port->write_urb,
 446                                           port->serial->dev,
 447                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 448                                           port->write_urb->transfer_buffer,
 449                                           length,
 450                                           kobil_write_callback,
 451                                           port,
 452                                           8
 453                                 );
 454
 455                         priv->cur_pos = priv->cur_pos + length;
 456                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 457                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
 458                         todo = priv->filled - priv->cur_pos;
 459
 460                         if (todo > 0) {
 461                                 msleep(24);
 462                         }
 463
 464                 } // end while
 465
 466                 priv->filled = 0;
 467                 priv->cur_pos = 0;
 468
 469                 // someone sets the dev to 0 if the close method has been called
 470                 port->interrupt_in_urb->dev = port->serial->dev;
 471
 472                 // start reading (except TWIN and KAAN SIM)
 473                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 474                         // someone sets the dev to 0 if the close method has been called
 475                         port->interrupt_in_urb->dev = port->serial->dev;
 476
 477                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 478                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 479                 }
 480         }
 481         return count;
 482 }
 483
 484
 485 static int kobil_write_room (struct usb_serial_port *port)
 486 {
 487         //dbg("%s - port %d", __FUNCTION__, port->number);
 488         return 8;
 489 }
 490
 491
 492 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
 493 {
 494         struct kobil_private * priv;
 495         int result;
 496         unsigned char *transfer_buffer;
 497         int transfer_buffer_length = 8;
 498
 499         priv = usb_get_serial_port_data(port);
 500         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 501                 // This device doesn't support ioctl calls
 502                 return -EINVAL;
 503         }
 504
 505         // allocate memory for transfer buffer
 506         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 507         if (!transfer_buffer) {
 508                 return -ENOMEM;
 509         }
 510
 511         result = usb_control_msg( port->serial->dev,
 512                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 513                                   SUSBCRequest_GetStatusLineState,
 514                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 515                                   0,
 516                                   0,
 517                                   transfer_buffer,
 518                                   transfer_buffer_length,
 519                                   KOBIL_TIMEOUT);
 520
 521         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 522             __FUNCTION__, port->number, result, transfer_buffer[0]);
 523
 524         result = 0;
 525         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 526                 result = TIOCM_DSR;
 527         kfree(transfer_buffer);
 528         return result;
 529 }
 530
 531 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
 532                            unsigned int set, unsigned int clear)
 533 {
 534         struct kobil_private * priv;
 535         int result;
 536         int dtr = 0;
 537         int rts = 0;
 538         unsigned char *transfer_buffer;
 539         int transfer_buffer_length = 8;
 540
 541         /* FIXME: locking ? */
 542         priv = usb_get_serial_port_data(port);
 543         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 544                 // This device doesn't support ioctl calls
 545                 return -EINVAL;
 546         }
 547
 548         // allocate memory for transfer buffer
 549         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 550         if (! transfer_buffer) {
 551                 return -ENOMEM;
 552         }
 553
 554         if (set & TIOCM_RTS)
 555                 rts = 1;
 556         if (set & TIOCM_DTR)
 557                 dtr = 1;
 558         if (clear & TIOCM_RTS)
 559                 rts = 0;
 560         if (clear & TIOCM_DTR)
 561                 dtr = 0;
 562
 563         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 564                 if (dtr != 0)
 565                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
 566                 else
 567                         dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
 568                 result = usb_control_msg( port->serial->dev,
 569                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 570                                           SUSBCRequest_SetStatusLinesOrQueues,
 571                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 572                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 573                                           0,
 574                                           transfer_buffer,
 575                                           0,
 576                                           KOBIL_TIMEOUT);
 577         } else {
 578                 if (rts != 0)
 579                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
 580                 else
 581                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
 582                 result = usb_control_msg( port->serial->dev,
 583                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 584                                           SUSBCRequest_SetStatusLinesOrQueues,
 585                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 586                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 587                                           0,
 588                                           transfer_buffer,
 589                                           0,
 590                                           KOBIL_TIMEOUT);
 591         }
 592         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
 593         kfree(transfer_buffer);
 594         return (result < 0) ? result : 0;
 595 }
 596
 597 static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old)
 598 {
 599         struct kobil_private * priv;
 600         int result;
 601         unsigned short urb_val = 0;
 602         int c_cflag = port->tty->termios->c_cflag;
 603         speed_t speed;
 604         void * settings;
 605
 606         priv = usb_get_serial_port_data(port);
 607         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 608                 // This device doesn't support ioctl calls
 609                 return;
 610
 611         switch (speed = tty_get_baud_rate(port->tty)) {
 612                 case 1200:
 613                         urb_val = SUSBCR_SBR_1200;
 614                         break;
 615                 default:
 616                         speed = 9600;
 617                 case 9600:
 618                         urb_val = SUSBCR_SBR_9600;
 619                         break;
 620         }
 621         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 622
 623         settings = kzalloc(50, GFP_KERNEL);
 624         if (! settings)
 625                 return;
 626
 627         sprintf(settings, "%d ", speed);
 628
 629         if (c_cflag & PARENB) {
 630                 if  (c_cflag & PARODD) {
 631                         urb_val |= SUSBCR_SPASB_OddParity;
 632                         strcat(settings, "Odd Parity");
 633                 } else {
 634                         urb_val |= SUSBCR_SPASB_EvenParity;
 635                         strcat(settings, "Even Parity");
 636                 }
 637         } else {
 638                 urb_val |= SUSBCR_SPASB_NoParity;
 639                 strcat(settings, "No Parity");
 640         }
 641         port->tty->termios->c_cflag &= ~CMSPAR;
 642         tty_encode_baud_rate(port->tty, speed, speed);
 643
 644         result = usb_control_msg( port->serial->dev,
 645                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 646                                   SUSBCRequest_SetBaudRateParityAndStopBits,
 647                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 648                                   urb_val,
 649                                   0,
 650                                   settings,
 651                                   0,
 652                                   KOBIL_TIMEOUT
 653                 );
 654         kfree(settings);
 655 }
 656
 657 static int kobil_ioctl(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
 658 {
 659         struct kobil_private * priv = usb_get_serial_port_data(port);
 660         unsigned char *transfer_buffer;
 661         int transfer_buffer_length = 8;
 662         int result;
 663
 664         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 665                 // This device doesn't support ioctl calls
 666                 return 0;
 667
 668         switch (cmd) {
 669         case TCFLSH:   // 0x540B
 670                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 671                 if (! transfer_buffer)
 672                         return -ENOBUFS;
 673
 674                 result = usb_control_msg( port->serial->dev,
 675                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 676                                           SUSBCRequest_Misc,
 677                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 678                                           SUSBCR_MSC_ResetAllQueues,
 679                                           0,
 680                                           NULL,//transfer_buffer,
 681                                           0,
 682                                           KOBIL_TIMEOUT
 683                         );
 684
 685                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
 686                 kfree(transfer_buffer);
 687                 return (result < 0) ? -EFAULT : 0;
 688         default:
 689                 return -ENOIOCTLCMD;
 690         }
 691 }
 692
 693 static int __init kobil_init (void)
 694 {
 695         int retval;
 696         retval = usb_serial_register(&kobil_device);
 697         if (retval)
 698                 goto failed_usb_serial_register;
 699         retval = usb_register(&kobil_driver);
 700         if (retval)
 701                 goto failed_usb_register;
 702
 703         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 704         info(DRIVER_DESC);
 705
 706         return 0;
 707 failed_usb_register:
 708         usb_serial_deregister(&kobil_device);
 709 failed_usb_serial_register:
 710         return retval;
 711 }
 712
 713
 714 static void __exit kobil_exit (void)
 715 {
 716         usb_deregister (&kobil_driver);
 717         usb_serial_deregister (&kobil_device);
 718 }
 719
 720 module_init(kobil_init);
 721 module_exit(kobil_exit);
 722
 723 MODULE_AUTHOR( DRIVER_AUTHOR );
 724 MODULE_DESCRIPTION( DRIVER_DESC );
 725 MODULE_LICENSE( "GPL" );
 726
 727 module_param(debug, bool, S_IRUGO | S_IWUSR);
 728 MODULE_PARM_DESC(debug, "Debug enabled or not");