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_release(struct usb_serial *serial);
  73 static int  kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
  74 static void kobil_close(struct usb_serial_port *port);
  75 static int  kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
  76                          const unsigned char *buf, int count);
  77 static int  kobil_write_room(struct tty_struct *tty);
  78 static int  kobil_ioctl(struct tty_struct *tty,
  79                         unsigned int cmd, unsigned long arg);
  80 static int  kobil_tiocmget(struct tty_struct *tty);
  81 static int  kobil_tiocmset(struct tty_struct *tty,
  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 tty_struct *tty,
  86                         struct usb_serial_port *port, struct ktermios *old);
  87 static void kobil_init_termios(struct tty_struct *tty);
  88
  89 static const struct usb_device_id id_table[] = {
  90         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  91         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  92         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  93         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  94         { }                     /* Terminating entry */
  95 };
  96
  97
  98 MODULE_DEVICE_TABLE(usb, id_table);
  99
 100 static struct usb_driver kobil_driver = {
 101         .name =         "kobil",
 102         .probe =        usb_serial_probe,
 103         .disconnect =   usb_serial_disconnect,
 104         .id_table =     id_table,
 105         .no_dynamic_id =        1,
 106 };
 107
 108
 109 static struct usb_serial_driver kobil_device = {
 110         .driver = {
 111                 .owner =        THIS_MODULE,
 112                 .name =         "kobil",
 113         },
 114         .description =          "KOBIL USB smart card terminal",
 115         .usb_driver =           &kobil_driver,
 116         .id_table =             id_table,
 117         .num_ports =            1,
 118         .attach =               kobil_startup,
 119         .release =              kobil_release,
 120         .ioctl =                kobil_ioctl,
 121         .set_termios =          kobil_set_termios,
 122         .init_termios =         kobil_init_termios,
 123         .tiocmget =             kobil_tiocmget,
 124         .tiocmset =             kobil_tiocmset,
 125         .open =                 kobil_open,
 126         .close =                kobil_close,
 127         .write =                kobil_write,
 128         .write_room =           kobil_write_room,
 129         .read_int_callback =    kobil_read_int_callback,
 130 };
 131
 132
 133 struct kobil_private {
 134         int write_int_endpoint_address;
 135         int read_int_endpoint_address;
 136         unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
 137         int filled;  /* index of the last char in buf */
 138         int cur_pos; /* index of the next char to send in buf */
 139         __u16 device_type;
 140 };
 141
 142
 143 static int kobil_startup(struct usb_serial *serial)
 144 {
 145         int i;
 146         struct kobil_private *priv;
 147         struct usb_device *pdev;
 148         struct usb_host_config *actconfig;
 149         struct usb_interface *interface;
 150         struct usb_host_interface *altsetting;
 151         struct usb_host_endpoint *endpoint;
 152
 153         if (serial->num_interrupt_out < serial->num_ports) {
 154                 dev_err(&serial->interface->dev, "missing interrupt-out endpoint\n");
 155                 return -ENODEV;
 156         }
 157
 158         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 159         if (!priv)
 160                 return -ENOMEM;
 161
 162         priv->filled = 0;
 163         priv->cur_pos = 0;
 164         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 165
 166         switch (priv->device_type) {
 167         case KOBIL_ADAPTER_B_PRODUCT_ID:
 168                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 169                 break;
 170         case KOBIL_ADAPTER_K_PRODUCT_ID:
 171                 printk(KERN_DEBUG
 172                   "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 173                 break;
 174         case KOBIL_USBTWIN_PRODUCT_ID:
 175                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 176                 break;
 177         case KOBIL_KAAN_SIM_PRODUCT_ID:
 178                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 179                 break;
 180         }
 181         usb_set_serial_port_data(serial->port[0], priv);
 182
 183         /* search for the necessary endpoints */
 184         pdev = serial->dev;
 185         actconfig = pdev->actconfig;
 186         interface = actconfig->interface[0];
 187         altsetting = interface->cur_altsetting;
 188         endpoint = altsetting->endpoint;
 189
 190         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 191                 endpoint = &altsetting->endpoint[i];
 192                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 193                         dbg("%s Found interrupt out endpoint. Address: %d",
 194                                 __func__, endpoint->desc.bEndpointAddress);
 195                         priv->write_int_endpoint_address =
 196                                 endpoint->desc.bEndpointAddress;
 197                 }
 198                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 199                         dbg("%s Found interrupt in  endpoint. Address: %d",
 200                                 __func__, endpoint->desc.bEndpointAddress);
 201                         priv->read_int_endpoint_address =
 202                                 endpoint->desc.bEndpointAddress;
 203                 }
 204         }
 205         return 0;
 206 }
 207
 208
 209 static void kobil_release(struct usb_serial *serial)
 210 {
 211         int i;
 212         dbg("%s - port %d", __func__, serial->port[0]->number);
 213
 214         for (i = 0; i < serial->num_ports; ++i)
 215                 kfree(usb_get_serial_port_data(serial->port[i]));
 216 }
 217
 218 static void kobil_init_termios(struct tty_struct *tty)
 219 {
 220         /* Default to echo off and other sane device settings */
 221         tty->termios->c_lflag = 0;
 222         tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 223         tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 224         /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 225         tty->termios->c_oflag &= ~ONLCR;
 226 }
 227
 228 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
 229 {
 230         int result = 0;
 231         struct kobil_private *priv;
 232         unsigned char *transfer_buffer;
 233         int transfer_buffer_length = 8;
 234         int write_urb_transfer_buffer_length = 8;
 235
 236         dbg("%s - port %d", __func__, port->number);
 237         priv = usb_get_serial_port_data(port);
 238
 239         /* someone sets the dev to 0 if the close method has been called */
 240         port->interrupt_in_urb->dev = port->serial->dev;
 241
 242         /* allocate memory for transfer buffer */
 243         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 244         if (!transfer_buffer)
 245                 return -ENOMEM;
 246
 247         /* allocate write_urb */
 248         if (!port->write_urb) {
 249                 dbg("%s - port %d  Allocating port->write_urb",
 250                                                 __func__, port->number);
 251                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 252                 if (!port->write_urb) {
 253                         dbg("%s - port %d usb_alloc_urb failed",
 254                                                 __func__, port->number);
 255                         kfree(transfer_buffer);
 256                         return -ENOMEM;
 257                 }
 258         }
 259
 260         /* allocate memory for write_urb transfer buffer */
 261         port->write_urb->transfer_buffer =
 262                         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",
 282                 __func__, port->number, result);
 283         dbg("Harware version: %i.%i.%i",
 284                 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",
 298                                         __func__, port->number, result);
 299         dbg("Firmware version: %i.%i.%i",
 300                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 301
 302         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 303                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 304                 /* Setting Baudrate, Parity and Stopbits */
 305                 result = usb_control_msg(port->serial->dev,
 306                           usb_rcvctrlpipe(port->serial->dev, 0),
 307                           SUSBCRequest_SetBaudRateParityAndStopBits,
 308                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 309                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 310                                                         SUSBCR_SPASB_1StopBit,
 311                           0,
 312                           transfer_buffer,
 313                           0,
 314                           KOBIL_TIMEOUT
 315                 );
 316                 dbg("%s - port %d Send set_baudrate URB returns: %i",
 317                                         __func__, port->number, result);
 318
 319                 /* reset all queues */
 320                 result = usb_control_msg(port->serial->dev,
 321                           usb_rcvctrlpipe(port->serial->dev, 0),
 322                           SUSBCRequest_Misc,
 323                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 324                           SUSBCR_MSC_ResetAllQueues,
 325                           0,
 326                           transfer_buffer,
 327                           0,
 328                           KOBIL_TIMEOUT
 329                 );
 330                 dbg("%s - port %d Send reset_all_queues URB returns: %i",
 331                                         __func__, port->number, result);
 332         }
 333         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 334             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 335             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 336                 /* start reading (Adapter B 'cause PNP string) */
 337                 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 338                 dbg("%s - port %d Send read URB returns: %i",
 339                                         __func__, port->number, result);
 340         }
 341
 342         kfree(transfer_buffer);
 343         return 0;
 344 }
 345
 346
 347 static void kobil_close(struct usb_serial_port *port)
 348 {
 349         dbg("%s - port %d", __func__, port->number);
 350
 351         /* FIXME: Add rts/dtr methods */
 352         if (port->write_urb) {
 353                 usb_poison_urb(port->write_urb);
 354                 kfree(port->write_urb->transfer_buffer);
 355                 usb_free_urb(port->write_urb);
 356                 port->write_urb = NULL;
 357         }
 358         usb_kill_urb(port->interrupt_in_urb);
 359 }
 360
 361
 362 static void kobil_read_int_callback(struct urb *urb)
 363 {
 364         int result;
 365         struct usb_serial_port *port = urb->context;
 366         struct tty_struct *tty;
 367         unsigned char *data = urb->transfer_buffer;
 368         int status = urb->status;
 369 /*      char *dbg_data; */
 370
 371         dbg("%s - port %d", __func__, port->number);
 372
 373         if (status) {
 374                 dbg("%s - port %d Read int status not zero: %d",
 375                     __func__, port->number, status);
 376                 return;
 377         }
 378
 379         tty = tty_port_tty_get(&port->port);
 380         if (tty && urb->actual_length) {
 381
 382                 /* BEGIN DEBUG */
 383                 /*
 384                   dbg_data = kzalloc((3 *  purb->actual_length + 10)
 385                                                 * sizeof(char), GFP_KERNEL);
 386                   if (! dbg_data) {
 387                           return;
 388                   }
 389                   for (i = 0; i < purb->actual_length; i++) {
 390                           sprintf(dbg_data +3*i, "%02X ", data[i]);
 391                   }
 392                   dbg(" <-- %s", dbg_data);
 393                   kfree(dbg_data);
 394                 */
 395                 /* END DEBUG */
 396
 397                 tty_insert_flip_string(tty, data, urb->actual_length);
 398                 tty_flip_buffer_push(tty);
 399         }
 400         tty_kref_put(tty);
 401         /* someone sets the dev to 0 if the close method has been called */
 402         port->interrupt_in_urb->dev = port->serial->dev;
 403
 404         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 405         dbg("%s - port %d Send read URB returns: %i",
 406                         __func__, port->number, result);
 407 }
 408
 409
 410 static void kobil_write_callback(struct urb *purb)
 411 {
 412 }
 413
 414
 415 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 416                         const unsigned char *buf, int count)
 417 {
 418         int length = 0;
 419         int result = 0;
 420         int todo = 0;
 421         struct kobil_private *priv;
 422
 423         if (count == 0) {
 424                 dbg("%s - port %d write request of 0 bytes",
 425                                                 __func__, port->number);
 426                 return 0;
 427         }
 428
 429         priv = usb_get_serial_port_data(port);
 430
 431         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 432                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 433                 return -ENOMEM;
 434         }
 435
 436         /* Copy data to buffer */
 437         memcpy(priv->buf + priv->filled, buf, count);
 438         usb_serial_debug_data(debug, &port->dev, __func__, count,
 439                                                 priv->buf + priv->filled);
 440         priv->filled = priv->filled + count;
 441
 442         /* only send complete block. TWIN, KAAN SIM and adapter K
 443            use the same protocol. */
 444         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 445              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 446                 /* stop reading (except TWIN and KAAN SIM) */
 447                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 448                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 449                         usb_kill_urb(port->interrupt_in_urb);
 450
 451                 todo = priv->filled - priv->cur_pos;
 452
 453                 while (todo > 0) {
 454                         /* max 8 byte in one urb (endpoint size) */
 455                         length = (todo < 8) ? todo : 8;
 456                         /* copy data to transfer buffer */
 457                         memcpy(port->write_urb->transfer_buffer,
 458                                         priv->buf + priv->cur_pos, length);
 459                         usb_fill_int_urb(port->write_urb,
 460                                   port->serial->dev,
 461                                   usb_sndintpipe(port->serial->dev,
 462                                         priv->write_int_endpoint_address),
 463                                   port->write_urb->transfer_buffer,
 464                                   length,
 465                                   kobil_write_callback,
 466                                   port,
 467                                   8
 468                         );
 469
 470                         priv->cur_pos = priv->cur_pos + length;
 471                         result = usb_submit_urb(port->write_urb,
 472                                         GFP_ATOMIC);
 473                         dbg("%s - port %d Send write URB returns: %i",
 474                                         __func__, port->number, result);
 475                         todo = priv->filled - priv->cur_pos;
 476
 477                         if (todo > 0)
 478                                 msleep(24);
 479                 }
 480
 481                 priv->filled = 0;
 482                 priv->cur_pos = 0;
 483
 484                 /* someone sets the dev to 0 if the close method
 485                    has been called */
 486                 port->interrupt_in_urb->dev = port->serial->dev;
 487
 488                 /* start reading (except TWIN and KAAN SIM) */
 489                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 490                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 491                         /* someone sets the dev to 0 if the close method has
 492                            been called */
 493                         port->interrupt_in_urb->dev = port->serial->dev;
 494
 495                         result = usb_submit_urb(port->interrupt_in_urb,
 496                                         GFP_ATOMIC);
 497                         dbg("%s - port %d Send read URB returns: %i",
 498                                         __func__, port->number, result);
 499                 }
 500         }
 501         return count;
 502 }
 503
 504
 505 static int kobil_write_room(struct tty_struct *tty)
 506 {
 507         /* dbg("%s - port %d", __func__, port->number); */
 508         /* FIXME */
 509         return 8;
 510 }
 511
 512
 513 static int kobil_tiocmget(struct tty_struct *tty)
 514 {
 515         struct usb_serial_port *port = tty->driver_data;
 516         struct kobil_private *priv;
 517         int result;
 518         unsigned char *transfer_buffer;
 519         int transfer_buffer_length = 8;
 520
 521         priv = usb_get_serial_port_data(port);
 522         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 523                         || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 524                 /* This device doesn't support ioctl calls */
 525                 return -EINVAL;
 526         }
 527
 528         /* allocate memory for transfer buffer */
 529         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 530         if (!transfer_buffer)
 531                 return -ENOMEM;
 532
 533         result = usb_control_msg(port->serial->dev,
 534                           usb_rcvctrlpipe(port->serial->dev, 0),
 535                           SUSBCRequest_GetStatusLineState,
 536                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 537                           0,
 538                           0,
 539                           transfer_buffer,
 540                           transfer_buffer_length,
 541                           KOBIL_TIMEOUT);
 542
 543         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 544             __func__, port->number, result, transfer_buffer[0]);
 545
 546         result = 0;
 547         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 548                 result = TIOCM_DSR;
 549         kfree(transfer_buffer);
 550         return result;
 551 }
 552
 553 static int kobil_tiocmset(struct tty_struct *tty,
 554                            unsigned int set, unsigned int clear)
 555 {
 556         struct usb_serial_port *port = tty->driver_data;
 557         struct kobil_private *priv;
 558         int result;
 559         int dtr = 0;
 560         int rts = 0;
 561         unsigned char *transfer_buffer;
 562         int transfer_buffer_length = 8;
 563
 564         /* FIXME: locking ? */
 565         priv = usb_get_serial_port_data(port);
 566         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 567                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 568                 /* This device doesn't support ioctl calls */
 569                 return -EINVAL;
 570         }
 571
 572         /* allocate memory for transfer buffer */
 573         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 574         if (!transfer_buffer)
 575                 return -ENOMEM;
 576
 577         if (set & TIOCM_RTS)
 578                 rts = 1;
 579         if (set & TIOCM_DTR)
 580                 dtr = 1;
 581         if (clear & TIOCM_RTS)
 582                 rts = 0;
 583         if (clear & TIOCM_DTR)
 584                 dtr = 0;
 585
 586         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 587                 if (dtr != 0)
 588                         dbg("%s - port %d Setting DTR",
 589                                                 __func__, port->number);
 590                 else
 591                         dbg("%s - port %d Clearing DTR",
 592                                                 __func__, port->number);
 593                 result = usb_control_msg(port->serial->dev,
 594                           usb_rcvctrlpipe(port->serial->dev, 0),
 595                           SUSBCRequest_SetStatusLinesOrQueues,
 596                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 597                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 598                           0,
 599                           transfer_buffer,
 600                           0,
 601                           KOBIL_TIMEOUT);
 602         } else {
 603                 if (rts != 0)
 604                         dbg("%s - port %d Setting RTS",
 605                                                 __func__, port->number);
 606                 else
 607                         dbg("%s - port %d Clearing RTS",
 608                                                 __func__, port->number);
 609                 result = usb_control_msg(port->serial->dev,
 610                         usb_rcvctrlpipe(port->serial->dev, 0),
 611                         SUSBCRequest_SetStatusLinesOrQueues,
 612                         USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 613                         ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 614                         0,
 615                         transfer_buffer,
 616                         0,
 617                         KOBIL_TIMEOUT);
 618         }
 619         dbg("%s - port %d Send set_status_line URB returns: %i",
 620                                         __func__, port->number, result);
 621         kfree(transfer_buffer);
 622         return (result < 0) ? result : 0;
 623 }
 624
 625 static void kobil_set_termios(struct tty_struct *tty,
 626                         struct usb_serial_port *port, struct ktermios *old)
 627 {
 628         struct kobil_private *priv;
 629         int result;
 630         unsigned short urb_val = 0;
 631         int c_cflag = tty->termios->c_cflag;
 632         speed_t speed;
 633
 634         priv = usb_get_serial_port_data(port);
 635         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 636                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 637                 /* This device doesn't support ioctl calls */
 638                 *tty->termios = *old;
 639                 return;
 640         }
 641
 642         speed = tty_get_baud_rate(tty);
 643         switch (speed) {
 644         case 1200:
 645                 urb_val = SUSBCR_SBR_1200;
 646                 break;
 647         default:
 648                 speed = 9600;
 649         case 9600:
 650                 urb_val = SUSBCR_SBR_9600;
 651                 break;
 652         }
 653         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 654                                                         SUSBCR_SPASB_1StopBit;
 655         if (c_cflag & PARENB) {
 656                 if  (c_cflag & PARODD)
 657                         urb_val |= SUSBCR_SPASB_OddParity;
 658                 else
 659                         urb_val |= SUSBCR_SPASB_EvenParity;
 660         } else
 661                 urb_val |= SUSBCR_SPASB_NoParity;
 662         tty->termios->c_cflag &= ~CMSPAR;
 663         tty_encode_baud_rate(tty, speed, speed);
 664
 665         result = usb_control_msg(port->serial->dev,
 666                   usb_rcvctrlpipe(port->serial->dev, 0),
 667                   SUSBCRequest_SetBaudRateParityAndStopBits,
 668                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 669                   urb_val,
 670                   0,
 671                   NULL,
 672                   0,
 673                   KOBIL_TIMEOUT
 674                 );
 675 }
 676
 677 static int kobil_ioctl(struct tty_struct *tty,
 678                                         unsigned int cmd, unsigned long arg)
 679 {
 680         struct usb_serial_port *port = tty->driver_data;
 681         struct kobil_private *priv = usb_get_serial_port_data(port);
 682         unsigned char *transfer_buffer;
 683         int transfer_buffer_length = 8;
 684         int result;
 685
 686         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 687                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 688                 /* This device doesn't support ioctl calls */
 689                 return -ENOIOCTLCMD;
 690
 691         switch (cmd) {
 692         case TCFLSH:
 693                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 694                 if (!transfer_buffer)
 695                         return -ENOBUFS;
 696
 697                 result = usb_control_msg(port->serial->dev,
 698                           usb_rcvctrlpipe(port->serial->dev, 0),
 699                           SUSBCRequest_Misc,
 700                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 701                           SUSBCR_MSC_ResetAllQueues,
 702                           0,
 703                           NULL, /* transfer_buffer, */
 704                           0,
 705                           KOBIL_TIMEOUT
 706                         );
 707
 708                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 709                 kfree(transfer_buffer);
 710                 return (result < 0) ? -EIO: 0;
 711         default:
 712                 return -ENOIOCTLCMD;
 713         }
 714 }
 715
 716 static int __init kobil_init(void)
 717 {
 718         int retval;
 719         retval = usb_serial_register(&kobil_device);
 720         if (retval)
 721                 goto failed_usb_serial_register;
 722         retval = usb_register(&kobil_driver);
 723         if (retval)
 724                 goto failed_usb_register;
 725
 726         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 727                DRIVER_DESC "\n");
 728
 729         return 0;
 730 failed_usb_register:
 731         usb_serial_deregister(&kobil_device);
 732 failed_usb_serial_register:
 733         return retval;
 734 }
 735
 736
 737 static void __exit kobil_exit(void)
 738 {
 739         usb_deregister(&kobil_driver);
 740         usb_serial_deregister(&kobil_device);
 741 }
 742
 743 module_init(kobil_init);
 744 module_exit(kobil_exit);
 745
 746 MODULE_AUTHOR(DRIVER_AUTHOR);
 747 MODULE_DESCRIPTION(DRIVER_DESC);
 748 MODULE_LICENSE("GPL");
 749
 750 module_param(debug, bool, S_IRUGO | S_IWUSR);
 751 MODULE_PARM_DESC(debug, "Debug enabled or not");