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
 235         /* force low_latency on so that our tty_push actually forces
 236          * the data through, otherwise it is scheduled, and with high
 237          * data rates (like with OHCI) data can get lost.
 238          */
 239         if (tty) {
 240                 tty->low_latency = 1;
 241
 242                 /* Default to echo off and other sane device settings */
 243                 tty->termios->c_lflag = 0;
 244                 tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN |
 245                                                                  XCASE);
 246                 tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 247                 /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 248                 tty->termios->c_oflag &= ~ONLCR;
 249         }
 250         /* allocate memory for transfer buffer */
 251         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 252         if (!transfer_buffer)
 253                 return -ENOMEM;
 254
 255         /* allocate write_urb */
 256         if (!port->write_urb) {
 257                 dbg("%s - port %d  Allocating port->write_urb",
 258                                                 __func__, port->number);
 259                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 260                 if (!port->write_urb) {
 261                         dbg("%s - port %d usb_alloc_urb failed",
 262                                                 __func__, port->number);
 263                         kfree(transfer_buffer);
 264                         return -ENOMEM;
 265                 }
 266         }
 267
 268         /* allocate memory for write_urb transfer buffer */
 269         port->write_urb->transfer_buffer =
 270                         kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 271         if (!port->write_urb->transfer_buffer) {
 272                 kfree(transfer_buffer);
 273                 usb_free_urb(port->write_urb);
 274                 port->write_urb = NULL;
 275                 return -ENOMEM;
 276         }
 277
 278         /* get hardware version */
 279         result = usb_control_msg(port->serial->dev,
 280                           usb_rcvctrlpipe(port->serial->dev, 0),
 281                           SUSBCRequest_GetMisc,
 282                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 283                           SUSBCR_MSC_GetHWVersion,
 284                           0,
 285                           transfer_buffer,
 286                           transfer_buffer_length,
 287                           KOBIL_TIMEOUT
 288         );
 289         dbg("%s - port %d Send get_HW_version URB returns: %i",
 290                 __func__, port->number, result);
 291         dbg("Harware version: %i.%i.%i",
 292                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 293
 294         /* get firmware version */
 295         result = usb_control_msg(port->serial->dev,
 296                           usb_rcvctrlpipe(port->serial->dev, 0),
 297                           SUSBCRequest_GetMisc,
 298                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 299                           SUSBCR_MSC_GetFWVersion,
 300                           0,
 301                           transfer_buffer,
 302                           transfer_buffer_length,
 303                           KOBIL_TIMEOUT
 304         );
 305         dbg("%s - port %d Send get_FW_version URB returns: %i",
 306                                         __func__, port->number, result);
 307         dbg("Firmware version: %i.%i.%i",
 308                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 309
 310         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 311                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 312                 /* Setting Baudrate, Parity and Stopbits */
 313                 result = usb_control_msg(port->serial->dev,
 314                           usb_rcvctrlpipe(port->serial->dev, 0),
 315                           SUSBCRequest_SetBaudRateParityAndStopBits,
 316                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 317                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 318                                                         SUSBCR_SPASB_1StopBit,
 319                           0,
 320                           transfer_buffer,
 321                           0,
 322                           KOBIL_TIMEOUT
 323                 );
 324                 dbg("%s - port %d Send set_baudrate URB returns: %i",
 325                                         __func__, port->number, result);
 326
 327                 /* reset all queues */
 328                 result = usb_control_msg(port->serial->dev,
 329                           usb_rcvctrlpipe(port->serial->dev, 0),
 330                           SUSBCRequest_Misc,
 331                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 332                           SUSBCR_MSC_ResetAllQueues,
 333                           0,
 334                           transfer_buffer,
 335                           0,
 336                           KOBIL_TIMEOUT
 337                 );
 338                 dbg("%s - port %d Send reset_all_queues URB returns: %i",
 339                                         __func__, port->number, result);
 340         }
 341         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 342             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 343             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 344                 /* start reading (Adapter B 'cause PNP string) */
 345                 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 346                 dbg("%s - port %d Send read URB returns: %i",
 347                                         __func__, port->number, result);
 348         }
 349
 350         kfree(transfer_buffer);
 351         return 0;
 352 }
 353
 354
 355 static void kobil_close(struct tty_struct *tty,
 356                         struct usb_serial_port *port, struct file *filp)
 357 {
 358         dbg("%s - port %d", __func__, port->number);
 359
 360         if (port->write_urb) {
 361                 usb_kill_urb(port->write_urb);
 362                 usb_free_urb(port->write_urb);
 363                 port->write_urb = NULL;
 364         }
 365         usb_kill_urb(port->interrupt_in_urb);
 366 }
 367
 368
 369 static void kobil_read_int_callback(struct urb *urb)
 370 {
 371         int result;
 372         struct usb_serial_port *port = urb->context;
 373         struct tty_struct *tty;
 374         unsigned char *data = urb->transfer_buffer;
 375         int status = urb->status;
 376 /*      char *dbg_data; */
 377
 378         dbg("%s - port %d", __func__, port->number);
 379
 380         if (status) {
 381                 dbg("%s - port %d Read int status not zero: %d",
 382                     __func__, port->number, status);
 383                 return;
 384         }
 385
 386         tty = port->port.tty;
 387         if (urb->actual_length) {
 388
 389                 /* BEGIN DEBUG */
 390                 /*
 391                   dbg_data = kzalloc((3 *  purb->actual_length + 10)
 392                                                 * sizeof(char), GFP_KERNEL);
 393                   if (! dbg_data) {
 394                           return;
 395                   }
 396                   for (i = 0; i < purb->actual_length; i++) {
 397                           sprintf(dbg_data +3*i, "%02X ", data[i]);
 398                   }
 399                   dbg(" <-- %s", dbg_data);
 400                   kfree(dbg_data);
 401                 */
 402                 /* END DEBUG */
 403
 404                 tty_buffer_request_room(tty, urb->actual_length);
 405                 tty_insert_flip_string(tty, data, urb->actual_length);
 406                 tty_flip_buffer_push(tty);
 407         }
 408         /* someone sets the dev to 0 if the close method has been called */
 409         port->interrupt_in_urb->dev = port->serial->dev;
 410
 411         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 412         dbg("%s - port %d Send read URB returns: %i",
 413                         __func__, port->number, result);
 414 }
 415
 416
 417 static void kobil_write_callback(struct urb *purb)
 418 {
 419 }
 420
 421
 422 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 423                         const unsigned char *buf, int count)
 424 {
 425         int length = 0;
 426         int result = 0;
 427         int todo = 0;
 428         struct kobil_private *priv;
 429
 430         if (count == 0) {
 431                 dbg("%s - port %d write request of 0 bytes",
 432                                                 __func__, port->number);
 433                 return 0;
 434         }
 435
 436         priv = usb_get_serial_port_data(port);
 437
 438         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 439                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 440                 return -ENOMEM;
 441         }
 442
 443         /* Copy data to buffer */
 444         memcpy(priv->buf + priv->filled, buf, count);
 445         usb_serial_debug_data(debug, &port->dev, __func__, count,
 446                                                 priv->buf + priv->filled);
 447         priv->filled = priv->filled + count;
 448
 449         /* only send complete block. TWIN, KAAN SIM and adapter K
 450            use the same protocol. */
 451         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 452              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 453                 /* stop reading (except TWIN and KAAN SIM) */
 454                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 455                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 456                         usb_kill_urb(port->interrupt_in_urb);
 457
 458                 todo = priv->filled - priv->cur_pos;
 459
 460                 while (todo > 0) {
 461                         /* max 8 byte in one urb (endpoint size) */
 462                         length = (todo < 8) ? todo : 8;
 463                         /* copy data to transfer buffer */
 464                         memcpy(port->write_urb->transfer_buffer,
 465                                         priv->buf + priv->cur_pos, length);
 466                         usb_fill_int_urb(port->write_urb,
 467                                   port->serial->dev,
 468                                   usb_sndintpipe(port->serial->dev,
 469                                         priv->write_int_endpoint_address),
 470                                   port->write_urb->transfer_buffer,
 471                                   length,
 472                                   kobil_write_callback,
 473                                   port,
 474                                   8
 475                         );
 476
 477                         priv->cur_pos = priv->cur_pos + length;
 478                         result = usb_submit_urb(port->write_urb, GFP_NOIO);
 479                         dbg("%s - port %d Send write URB returns: %i",
 480                                         __func__, port->number, result);
 481                         todo = priv->filled - priv->cur_pos;
 482
 483                         if (todo > 0)
 484                                 msleep(24);
 485                 }
 486
 487                 priv->filled = 0;
 488                 priv->cur_pos = 0;
 489
 490                 /* someone sets the dev to 0 if the close method
 491                    has been called */
 492                 port->interrupt_in_urb->dev = port->serial->dev;
 493
 494                 /* start reading (except TWIN and KAAN SIM) */
 495                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 496                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 497                         /* someone sets the dev to 0 if the close method has
 498                            been called */
 499                         port->interrupt_in_urb->dev = port->serial->dev;
 500
 501                         result = usb_submit_urb(port->interrupt_in_urb,
 502                                                                 GFP_NOIO);
 503                         dbg("%s - port %d Send read URB returns: %i",
 504                                         __func__, port->number, result);
 505                 }
 506         }
 507         return count;
 508 }
 509
 510
 511 static int kobil_write_room(struct tty_struct *tty)
 512 {
 513         /* dbg("%s - port %d", __func__, port->number); */
 514         /* FIXME */
 515         return 8;
 516 }
 517
 518
 519 static int kobil_tiocmget(struct tty_struct *tty, struct file *file)
 520 {
 521         struct usb_serial_port *port = tty->driver_data;
 522         struct kobil_private *priv;
 523         int result;
 524         unsigned char *transfer_buffer;
 525         int transfer_buffer_length = 8;
 526
 527         priv = usb_get_serial_port_data(port);
 528         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 529                         || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 530                 /* This device doesn't support ioctl calls */
 531                 return -EINVAL;
 532         }
 533
 534         /* allocate memory for transfer buffer */
 535         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 536         if (!transfer_buffer)
 537                 return -ENOMEM;
 538
 539         result = usb_control_msg(port->serial->dev,
 540                           usb_rcvctrlpipe(port->serial->dev, 0),
 541                           SUSBCRequest_GetStatusLineState,
 542                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 543                           0,
 544                           0,
 545                           transfer_buffer,
 546                           transfer_buffer_length,
 547                           KOBIL_TIMEOUT);
 548
 549         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 550             __func__, port->number, result, transfer_buffer[0]);
 551
 552         result = 0;
 553         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 554                 result = TIOCM_DSR;
 555         kfree(transfer_buffer);
 556         return result;
 557 }
 558
 559 static int kobil_tiocmset(struct tty_struct *tty, struct file *file,
 560                            unsigned int set, unsigned int clear)
 561 {
 562         struct usb_serial_port *port = tty->driver_data;
 563         struct kobil_private *priv;
 564         int result;
 565         int dtr = 0;
 566         int rts = 0;
 567         unsigned char *transfer_buffer;
 568         int transfer_buffer_length = 8;
 569
 570         /* FIXME: locking ? */
 571         priv = usb_get_serial_port_data(port);
 572         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 573                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 574                 /* This device doesn't support ioctl calls */
 575                 return -EINVAL;
 576         }
 577
 578         /* allocate memory for transfer buffer */
 579         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 580         if (!transfer_buffer)
 581                 return -ENOMEM;
 582
 583         if (set & TIOCM_RTS)
 584                 rts = 1;
 585         if (set & TIOCM_DTR)
 586                 dtr = 1;
 587         if (clear & TIOCM_RTS)
 588                 rts = 0;
 589         if (clear & TIOCM_DTR)
 590                 dtr = 0;
 591
 592         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 593                 if (dtr != 0)
 594                         dbg("%s - port %d Setting DTR",
 595                                                 __func__, port->number);
 596                 else
 597                         dbg("%s - port %d Clearing DTR",
 598                                                 __func__, port->number);
 599                 result = usb_control_msg(port->serial->dev,
 600                           usb_rcvctrlpipe(port->serial->dev, 0),
 601                           SUSBCRequest_SetStatusLinesOrQueues,
 602                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 603                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 604                           0,
 605                           transfer_buffer,
 606                           0,
 607                           KOBIL_TIMEOUT);
 608         } else {
 609                 if (rts != 0)
 610                         dbg("%s - port %d Setting RTS",
 611                                                 __func__, port->number);
 612                 else
 613                         dbg("%s - port %d Clearing RTS",
 614                                                 __func__, port->number);
 615                 result = usb_control_msg(port->serial->dev,
 616                         usb_rcvctrlpipe(port->serial->dev, 0),
 617                         SUSBCRequest_SetStatusLinesOrQueues,
 618                         USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 619                         ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 620                         0,
 621                         transfer_buffer,
 622                         0,
 623                         KOBIL_TIMEOUT);
 624         }
 625         dbg("%s - port %d Send set_status_line URB returns: %i",
 626                                         __func__, port->number, result);
 627         kfree(transfer_buffer);
 628         return (result < 0) ? result : 0;
 629 }
 630
 631 static void kobil_set_termios(struct tty_struct *tty,
 632                         struct usb_serial_port *port, struct ktermios *old)
 633 {
 634         struct kobil_private *priv;
 635         int result;
 636         unsigned short urb_val = 0;
 637         int c_cflag = tty->termios->c_cflag;
 638         speed_t speed;
 639         void *settings;
 640
 641         priv = usb_get_serial_port_data(port);
 642         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 643                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 644                 /* This device doesn't support ioctl calls */
 645                 *tty->termios = *old;
 646                 return;
 647         }
 648
 649         speed = tty_get_baud_rate(tty);
 650         switch (speed) {
 651         case 1200:
 652                 urb_val = SUSBCR_SBR_1200;
 653                 break;
 654         default:
 655                 speed = 9600;
 656         case 9600:
 657                 urb_val = SUSBCR_SBR_9600;
 658                 break;
 659         }
 660         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 661                                                         SUSBCR_SPASB_1StopBit;
 662
 663         settings = kzalloc(50, GFP_KERNEL);
 664         if (!settings)
 665                 return;
 666
 667         sprintf(settings, "%d ", speed);
 668
 669         if (c_cflag & PARENB) {
 670                 if  (c_cflag & PARODD) {
 671                         urb_val |= SUSBCR_SPASB_OddParity;
 672                         strcat(settings, "Odd Parity");
 673                 } else {
 674                         urb_val |= SUSBCR_SPASB_EvenParity;
 675                         strcat(settings, "Even Parity");
 676                 }
 677         } else {
 678                 urb_val |= SUSBCR_SPASB_NoParity;
 679                 strcat(settings, "No Parity");
 680         }
 681         tty->termios->c_cflag &= ~CMSPAR;
 682         tty_encode_baud_rate(tty, speed, speed);
 683
 684         result = usb_control_msg(port->serial->dev,
 685                   usb_rcvctrlpipe(port->serial->dev, 0),
 686                   SUSBCRequest_SetBaudRateParityAndStopBits,
 687                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 688                   urb_val,
 689                   0,
 690                   settings,
 691                   0,
 692                   KOBIL_TIMEOUT
 693                 );
 694         kfree(settings);
 695 }
 696
 697 static int kobil_ioctl(struct tty_struct *tty, struct file *file,
 698                                         unsigned int cmd, unsigned long arg)
 699 {
 700         struct usb_serial_port *port = tty->driver_data;
 701         struct kobil_private *priv = usb_get_serial_port_data(port);
 702         unsigned char *transfer_buffer;
 703         int transfer_buffer_length = 8;
 704         int result;
 705
 706         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 707                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 708                 /* This device doesn't support ioctl calls */
 709                 return -ENOIOCTLCMD;
 710
 711         switch (cmd) {
 712         case TCFLSH:
 713                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 714                 if (!transfer_buffer)
 715                         return -ENOBUFS;
 716
 717                 result = usb_control_msg(port->serial->dev,
 718                           usb_rcvctrlpipe(port->serial->dev, 0),
 719                           SUSBCRequest_Misc,
 720                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 721                           SUSBCR_MSC_ResetAllQueues,
 722                           0,
 723                           NULL, /* transfer_buffer, */
 724                           0,
 725                           KOBIL_TIMEOUT
 726                         );
 727
 728                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 729                 kfree(transfer_buffer);
 730                 return (result < 0) ? -EIO: 0;
 731         default:
 732                 return -ENOIOCTLCMD;
 733         }
 734 }
 735
 736 static int __init kobil_init(void)
 737 {
 738         int retval;
 739         retval = usb_serial_register(&kobil_device);
 740         if (retval)
 741                 goto failed_usb_serial_register;
 742         retval = usb_register(&kobil_driver);
 743         if (retval)
 744                 goto failed_usb_register;
 745
 746         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 747         info(DRIVER_DESC);
 748
 749         return 0;
 750 failed_usb_register:
 751         usb_serial_deregister(&kobil_device);
 752 failed_usb_serial_register:
 753         return retval;
 754 }
 755
 756
 757 static void __exit kobil_exit(void)
 758 {
 759         usb_deregister(&kobil_driver);
 760         usb_serial_deregister(&kobil_device);
 761 }
 762
 763 module_init(kobil_init);
 764 module_exit(kobil_exit);
 765
 766 MODULE_AUTHOR(DRIVER_AUTHOR);
 767 MODULE_DESCRIPTION(DRIVER_DESC);
 768 MODULE_LICENSE("GPL");
 769
 770 module_param(debug, bool, S_IRUGO | S_IWUSR);
 771 MODULE_PARM_DESC(debug, "Debug enabled or not");