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 <linux/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 tty_struct *tty,
  74                         struct usb_serial_port *port, struct file *filp);
  75 static void kobil_close(struct tty_struct *tty, struct usb_serial_port *port,
  76                         struct file *filp);
  77 static int  kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
  78                          const unsigned char *buf, int count);
  79 static int  kobil_write_room(struct tty_struct *tty);
  80 static int  kobil_ioctl(struct tty_struct *tty, struct file *file,
  81                         unsigned int cmd, unsigned long arg);
  82 static int  kobil_tiocmget(struct tty_struct *tty, struct file *file);
  83 static int  kobil_tiocmset(struct tty_struct *tty, struct file *file,
  84                            unsigned int set, unsigned int clear);
  85 static void kobil_read_int_callback(struct urb *urb);
  86 static void kobil_write_callback(struct urb *purb);
  87 static void kobil_set_termios(struct tty_struct *tty,
  88                         struct usb_serial_port *port, struct ktermios *old);
  89
  90
  91 static struct usb_device_id id_table [] = {
  92         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  93         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  94         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  95         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  96         { }                     /* Terminating entry */
  97 };
  98
  99
 100 MODULE_DEVICE_TABLE(usb, id_table);
 101
 102 static struct usb_driver kobil_driver = {
 103         .name =         "kobil",
 104         .probe =        usb_serial_probe,
 105         .disconnect =   usb_serial_disconnect,
 106         .id_table =     id_table,
 107         .no_dynamic_id =        1,
 108 };
 109
 110
 111 static struct usb_serial_driver kobil_device = {
 112         .driver = {
 113                 .owner =        THIS_MODULE,
 114                 .name =         "kobil",
 115         },
 116         .description =          "KOBIL USB smart card terminal",
 117         .usb_driver =           &kobil_driver,
 118         .id_table =             id_table,
 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 };
 142
 143
 144 static int kobil_startup(struct usb_serial *serial)
 145 {
 146         int i;
 147         struct kobil_private *priv;
 148         struct usb_device *pdev;
 149         struct usb_host_config *actconfig;
 150         struct usb_interface *interface;
 151         struct usb_host_interface *altsetting;
 152         struct usb_host_endpoint *endpoint;
 153
 154         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 155         if (!priv)
 156                 return -ENOMEM;
 157
 158         priv->filled = 0;
 159         priv->cur_pos = 0;
 160         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 161
 162         switch (priv->device_type) {
 163         case KOBIL_ADAPTER_B_PRODUCT_ID:
 164                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 165                 break;
 166         case KOBIL_ADAPTER_K_PRODUCT_ID:
 167                 printk(KERN_DEBUG
 168                   "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 169                 break;
 170         case KOBIL_USBTWIN_PRODUCT_ID:
 171                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 172                 break;
 173         case KOBIL_KAAN_SIM_PRODUCT_ID:
 174                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 175                 break;
 176         }
 177         usb_set_serial_port_data(serial->port[0], priv);
 178
 179         /* search for the necessary endpoints */
 180         pdev = serial->dev;
 181         actconfig = pdev->actconfig;
 182         interface = actconfig->interface[0];
 183         altsetting = interface->cur_altsetting;
 184         endpoint = altsetting->endpoint;
 185
 186         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 187                 endpoint = &altsetting->endpoint[i];
 188                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 189                         dbg("%s Found interrupt out endpoint. Address: %d",
 190                                 __func__, endpoint->desc.bEndpointAddress);
 191                         priv->write_int_endpoint_address =
 192                                 endpoint->desc.bEndpointAddress;
 193                 }
 194                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 195                         dbg("%s Found interrupt in  endpoint. Address: %d",
 196                                 __func__, endpoint->desc.bEndpointAddress);
 197                         priv->read_int_endpoint_address =
 198                                 endpoint->desc.bEndpointAddress;
 199                 }
 200         }
 201         return 0;
 202 }
 203
 204
 205 static void kobil_shutdown(struct usb_serial *serial)
 206 {
 207         int i;
 208         dbg("%s - port %d", __func__, serial->port[0]->number);
 209
 210         for (i = 0; i < serial->num_ports; ++i) {
 211                 while (serial->port[i]->port.count > 0)
 212                         kobil_close(NULL, serial->port[i], NULL);
 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 tty_struct *tty,
 220                         struct usb_serial_port *port, struct file *filp)
 221 {
 222         int result = 0;
 223         struct kobil_private *priv;
 224         unsigned char *transfer_buffer;
 225         int transfer_buffer_length = 8;
 226         int write_urb_transfer_buffer_length = 8;
 227
 228         dbg("%s - port %d", __func__, port->number);
 229         priv = usb_get_serial_port_data(port);
 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         if (tty) {
 235
 236                 /* Default to echo off and other sane device settings */
 237                 tty->termios->c_lflag = 0;
 238                 tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN |
 239                                                                  XCASE);
 240                 tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 241                 /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 242                 tty->termios->c_oflag &= ~ONLCR;
 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         /* allocate write_urb */
 250         if (!port->write_urb) {
 251                 dbg("%s - port %d  Allocating port->write_urb",
 252                                                 __func__, 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",
 256                                                 __func__, port->number);
 257                         kfree(transfer_buffer);
 258                         return -ENOMEM;
 259                 }
 260         }
 261
 262         /* allocate memory for write_urb transfer buffer */
 263         port->write_urb->transfer_buffer =
 264                         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",
 284                 __func__, port->number, result);
 285         dbg("Harware version: %i.%i.%i",
 286                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 287
 288         /* get firmware version */
 289         result = usb_control_msg(port->serial->dev,
 290                           usb_rcvctrlpipe(port->serial->dev, 0),
 291                           SUSBCRequest_GetMisc,
 292                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 293                           SUSBCR_MSC_GetFWVersion,
 294                           0,
 295                           transfer_buffer,
 296                           transfer_buffer_length,
 297                           KOBIL_TIMEOUT
 298         );
 299         dbg("%s - port %d Send get_FW_version URB returns: %i",
 300                                         __func__, port->number, result);
 301         dbg("Firmware version: %i.%i.%i",
 302                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 303
 304         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 305                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 306                 /* Setting Baudrate, Parity and Stopbits */
 307                 result = usb_control_msg(port->serial->dev,
 308                           usb_rcvctrlpipe(port->serial->dev, 0),
 309                           SUSBCRequest_SetBaudRateParityAndStopBits,
 310                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 311                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 312                                                         SUSBCR_SPASB_1StopBit,
 313                           0,
 314                           transfer_buffer,
 315                           0,
 316                           KOBIL_TIMEOUT
 317                 );
 318                 dbg("%s - port %d Send set_baudrate URB returns: %i",
 319                                         __func__, port->number, result);
 320
 321                 /* reset all queues */
 322                 result = usb_control_msg(port->serial->dev,
 323                           usb_rcvctrlpipe(port->serial->dev, 0),
 324                           SUSBCRequest_Misc,
 325                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 326                           SUSBCR_MSC_ResetAllQueues,
 327                           0,
 328                           transfer_buffer,
 329                           0,
 330                           KOBIL_TIMEOUT
 331                 );
 332                 dbg("%s - port %d Send reset_all_queues URB returns: %i",
 333                                         __func__, port->number, result);
 334         }
 335         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 336             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 337             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 338                 /* start reading (Adapter B 'cause PNP string) */
 339                 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 340                 dbg("%s - port %d Send read URB returns: %i",
 341                                         __func__, port->number, result);
 342         }
 343
 344         kfree(transfer_buffer);
 345         return 0;
 346 }
 347
 348
 349 static void kobil_close(struct tty_struct *tty,
 350                         struct usb_serial_port *port, struct file *filp)
 351 {
 352         dbg("%s - port %d", __func__, port->number);
 353
 354         if (port->write_urb) {
 355                 usb_kill_urb(port->write_urb);
 356                 usb_free_urb(port->write_urb);
 357                 port->write_urb = NULL;
 358         }
 359         usb_kill_urb(port->interrupt_in_urb);
 360 }
 361
 362
 363 static void kobil_read_int_callback(struct urb *urb)
 364 {
 365         int result;
 366         struct usb_serial_port *port = urb->context;
 367         struct tty_struct *tty;
 368         unsigned char *data = urb->transfer_buffer;
 369         int status = urb->status;
 370 /*      char *dbg_data; */
 371
 372         dbg("%s - port %d", __func__, port->number);
 373
 374         if (status) {
 375                 dbg("%s - port %d Read int status not zero: %d",
 376                     __func__, port->number, status);
 377                 return;
 378         }
 379
 380         tty = tty_port_tty_get(&port->port);
 381         if (urb->actual_length) {
 382
 383                 /* BEGIN DEBUG */
 384                 /*
 385                   dbg_data = kzalloc((3 *  purb->actual_length + 10)
 386                                                 * sizeof(char), GFP_KERNEL);
 387                   if (! dbg_data) {
 388                           return;
 389                   }
 390                   for (i = 0; i < purb->actual_length; i++) {
 391                           sprintf(dbg_data +3*i, "%02X ", data[i]);
 392                   }
 393                   dbg(" <-- %s", dbg_data);
 394                   kfree(dbg_data);
 395                 */
 396                 /* END DEBUG */
 397
 398                 tty_buffer_request_room(tty, urb->actual_length);
 399                 tty_insert_flip_string(tty, data, urb->actual_length);
 400                 tty_flip_buffer_push(tty);
 401         }
 402         tty_kref_put(tty);
 403         /* someone sets the dev to 0 if the close method has been called */
 404         port->interrupt_in_urb->dev = port->serial->dev;
 405
 406         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 407         dbg("%s - port %d Send read URB returns: %i",
 408                         __func__, port->number, result);
 409 }
 410
 411
 412 static void kobil_write_callback(struct urb *purb)
 413 {
 414 }
 415
 416
 417 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 418                         const unsigned char *buf, int count)
 419 {
 420         int length = 0;
 421         int result = 0;
 422         int todo = 0;
 423         struct kobil_private *priv;
 424
 425         if (count == 0) {
 426                 dbg("%s - port %d write request of 0 bytes",
 427                                                 __func__, port->number);
 428                 return 0;
 429         }
 430
 431         priv = usb_get_serial_port_data(port);
 432
 433         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 434                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 435                 return -ENOMEM;
 436         }
 437
 438         /* Copy data to buffer */
 439         memcpy(priv->buf + priv->filled, buf, count);
 440         usb_serial_debug_data(debug, &port->dev, __func__, count,
 441                                                 priv->buf + priv->filled);
 442         priv->filled = priv->filled + count;
 443
 444         /* only send complete block. TWIN, KAAN SIM and adapter K
 445            use the same protocol. */
 446         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 447              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 448                 /* stop reading (except TWIN and KAAN SIM) */
 449                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 450                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 451                         usb_kill_urb(port->interrupt_in_urb);
 452
 453                 todo = priv->filled - priv->cur_pos;
 454
 455                 while (todo > 0) {
 456                         /* max 8 byte in one urb (endpoint size) */
 457                         length = (todo < 8) ? todo : 8;
 458                         /* copy data to transfer buffer */
 459                         memcpy(port->write_urb->transfer_buffer,
 460                                         priv->buf + priv->cur_pos, length);
 461                         usb_fill_int_urb(port->write_urb,
 462                                   port->serial->dev,
 463                                   usb_sndintpipe(port->serial->dev,
 464                                         priv->write_int_endpoint_address),
 465                                   port->write_urb->transfer_buffer,
 466                                   length,
 467                                   kobil_write_callback,
 468                                   port,
 469                                   8
 470                         );
 471
 472                         priv->cur_pos = priv->cur_pos + length;
 473                         result = usb_submit_urb(port->write_urb, GFP_NOIO);
 474                         dbg("%s - port %d Send write URB returns: %i",
 475                                         __func__, port->number, result);
 476                         todo = priv->filled - priv->cur_pos;
 477
 478                         if (todo > 0)
 479                                 msleep(24);
 480                 }
 481
 482                 priv->filled = 0;
 483                 priv->cur_pos = 0;
 484
 485                 /* someone sets the dev to 0 if the close method
 486                    has been called */
 487                 port->interrupt_in_urb->dev = port->serial->dev;
 488
 489                 /* start reading (except TWIN and KAAN SIM) */
 490                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 491                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 492                         /* someone sets the dev to 0 if the close method has
 493                            been called */
 494                         port->interrupt_in_urb->dev = port->serial->dev;
 495
 496                         result = usb_submit_urb(port->interrupt_in_urb,
 497                                                                 GFP_NOIO);
 498                         dbg("%s - port %d Send read URB returns: %i",
 499                                         __func__, port->number, result);
 500                 }
 501         }
 502         return count;
 503 }
 504
 505
 506 static int kobil_write_room(struct tty_struct *tty)
 507 {
 508         /* dbg("%s - port %d", __func__, port->number); */
 509         /* FIXME */
 510         return 8;
 511 }
 512
 513
 514 static int kobil_tiocmget(struct tty_struct *tty, struct file *file)
 515 {
 516         struct usb_serial_port *port = tty->driver_data;
 517         struct kobil_private *priv;
 518         int result;
 519         unsigned char *transfer_buffer;
 520         int transfer_buffer_length = 8;
 521
 522         priv = usb_get_serial_port_data(port);
 523         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 524                         || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 525                 /* This device doesn't support ioctl calls */
 526                 return -EINVAL;
 527         }
 528
 529         /* allocate memory for transfer buffer */
 530         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 531         if (!transfer_buffer)
 532                 return -ENOMEM;
 533
 534         result = usb_control_msg(port->serial->dev,
 535                           usb_rcvctrlpipe(port->serial->dev, 0),
 536                           SUSBCRequest_GetStatusLineState,
 537                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 538                           0,
 539                           0,
 540                           transfer_buffer,
 541                           transfer_buffer_length,
 542                           KOBIL_TIMEOUT);
 543
 544         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 545             __func__, port->number, result, transfer_buffer[0]);
 546
 547         result = 0;
 548         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 549                 result = TIOCM_DSR;
 550         kfree(transfer_buffer);
 551         return result;
 552 }
 553
 554 static int kobil_tiocmset(struct tty_struct *tty, struct file *file,
 555                            unsigned int set, unsigned int clear)
 556 {
 557         struct usb_serial_port *port = tty->driver_data;
 558         struct kobil_private *priv;
 559         int result;
 560         int dtr = 0;
 561         int rts = 0;
 562         unsigned char *transfer_buffer;
 563         int transfer_buffer_length = 8;
 564
 565         /* FIXME: locking ? */
 566         priv = usb_get_serial_port_data(port);
 567         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 568                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 569                 /* This device doesn't support ioctl calls */
 570                 return -EINVAL;
 571         }
 572
 573         /* allocate memory for transfer buffer */
 574         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 575         if (!transfer_buffer)
 576                 return -ENOMEM;
 577
 578         if (set & TIOCM_RTS)
 579                 rts = 1;
 580         if (set & TIOCM_DTR)
 581                 dtr = 1;
 582         if (clear & TIOCM_RTS)
 583                 rts = 0;
 584         if (clear & TIOCM_DTR)
 585                 dtr = 0;
 586
 587         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 588                 if (dtr != 0)
 589                         dbg("%s - port %d Setting DTR",
 590                                                 __func__, port->number);
 591                 else
 592                         dbg("%s - port %d Clearing DTR",
 593                                                 __func__, port->number);
 594                 result = usb_control_msg(port->serial->dev,
 595                           usb_rcvctrlpipe(port->serial->dev, 0),
 596                           SUSBCRequest_SetStatusLinesOrQueues,
 597                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 598                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 599                           0,
 600                           transfer_buffer,
 601                           0,
 602                           KOBIL_TIMEOUT);
 603         } else {
 604                 if (rts != 0)
 605                         dbg("%s - port %d Setting RTS",
 606                                                 __func__, port->number);
 607                 else
 608                         dbg("%s - port %d Clearing RTS",
 609                                                 __func__, port->number);
 610                 result = usb_control_msg(port->serial->dev,
 611                         usb_rcvctrlpipe(port->serial->dev, 0),
 612                         SUSBCRequest_SetStatusLinesOrQueues,
 613                         USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 614                         ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 615                         0,
 616                         transfer_buffer,
 617                         0,
 618                         KOBIL_TIMEOUT);
 619         }
 620         dbg("%s - port %d Send set_status_line URB returns: %i",
 621                                         __func__, port->number, result);
 622         kfree(transfer_buffer);
 623         return (result < 0) ? result : 0;
 624 }
 625
 626 static void kobil_set_termios(struct tty_struct *tty,
 627                         struct usb_serial_port *port, struct ktermios *old)
 628 {
 629         struct kobil_private *priv;
 630         int result;
 631         unsigned short urb_val = 0;
 632         int c_cflag = tty->termios->c_cflag;
 633         speed_t speed;
 634         void *settings;
 635
 636         priv = usb_get_serial_port_data(port);
 637         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 638                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 639                 /* This device doesn't support ioctl calls */
 640                 *tty->termios = *old;
 641                 return;
 642         }
 643
 644         speed = tty_get_baud_rate(tty);
 645         switch (speed) {
 646         case 1200:
 647                 urb_val = SUSBCR_SBR_1200;
 648                 break;
 649         default:
 650                 speed = 9600;
 651         case 9600:
 652                 urb_val = SUSBCR_SBR_9600;
 653                 break;
 654         }
 655         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 656                                                         SUSBCR_SPASB_1StopBit;
 657
 658         settings = kzalloc(50, GFP_KERNEL);
 659         if (!settings)
 660                 return;
 661
 662         sprintf(settings, "%d ", speed);
 663
 664         if (c_cflag & PARENB) {
 665                 if  (c_cflag & PARODD) {
 666                         urb_val |= SUSBCR_SPASB_OddParity;
 667                         strcat(settings, "Odd Parity");
 668                 } else {
 669                         urb_val |= SUSBCR_SPASB_EvenParity;
 670                         strcat(settings, "Even Parity");
 671                 }
 672         } else {
 673                 urb_val |= SUSBCR_SPASB_NoParity;
 674                 strcat(settings, "No Parity");
 675         }
 676         tty->termios->c_cflag &= ~CMSPAR;
 677         tty_encode_baud_rate(tty, speed, speed);
 678
 679         result = usb_control_msg(port->serial->dev,
 680                   usb_rcvctrlpipe(port->serial->dev, 0),
 681                   SUSBCRequest_SetBaudRateParityAndStopBits,
 682                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 683                   urb_val,
 684                   0,
 685                   settings,
 686                   0,
 687                   KOBIL_TIMEOUT
 688                 );
 689         kfree(settings);
 690 }
 691
 692 static int kobil_ioctl(struct tty_struct *tty, struct file *file,
 693                                         unsigned int cmd, unsigned long arg)
 694 {
 695         struct usb_serial_port *port = tty->driver_data;
 696         struct kobil_private *priv = usb_get_serial_port_data(port);
 697         unsigned char *transfer_buffer;
 698         int transfer_buffer_length = 8;
 699         int result;
 700
 701         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 702                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 703                 /* This device doesn't support ioctl calls */
 704                 return -ENOIOCTLCMD;
 705
 706         switch (cmd) {
 707         case TCFLSH:
 708                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 709                 if (!transfer_buffer)
 710                         return -ENOBUFS;
 711
 712                 result = usb_control_msg(port->serial->dev,
 713                           usb_rcvctrlpipe(port->serial->dev, 0),
 714                           SUSBCRequest_Misc,
 715                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 716                           SUSBCR_MSC_ResetAllQueues,
 717                           0,
 718                           NULL, /* transfer_buffer, */
 719                           0,
 720                           KOBIL_TIMEOUT
 721                         );
 722
 723                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 724                 kfree(transfer_buffer);
 725                 return (result < 0) ? -EIO: 0;
 726         default:
 727                 return -ENOIOCTLCMD;
 728         }
 729 }
 730
 731 static int __init kobil_init(void)
 732 {
 733         int retval;
 734         retval = usb_serial_register(&kobil_device);
 735         if (retval)
 736                 goto failed_usb_serial_register;
 737         retval = usb_register(&kobil_driver);
 738         if (retval)
 739                 goto failed_usb_register;
 740
 741         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 742                DRIVER_DESC "\n");
 743
 744         return 0;
 745 failed_usb_register:
 746         usb_serial_deregister(&kobil_device);
 747 failed_usb_serial_register:
 748         return retval;
 749 }
 750
 751
 752 static void __exit kobil_exit(void)
 753 {
 754         usb_deregister(&kobil_driver);
 755         usb_serial_deregister(&kobil_device);
 756 }
 757
 758 module_init(kobil_init);
 759 module_exit(kobil_exit);
 760
 761 MODULE_AUTHOR(DRIVER_AUTHOR);
 762 MODULE_DESCRIPTION(DRIVER_DESC);
 763 MODULE_LICENSE("GPL");
 764
 765 module_param(debug, bool, S_IRUGO | S_IWUSR);
 766 MODULE_PARM_DESC(debug, "Debug enabled or not");