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 usb_serial_port *port);
  76 static int  kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
  77                          const unsigned char *buf, int count);
  78 static int  kobil_write_room(struct tty_struct *tty);
  79 static int  kobil_ioctl(struct tty_struct *tty, struct file *file,
  80                         unsigned int cmd, unsigned long arg);
  81 static int  kobil_tiocmget(struct tty_struct *tty, struct file *file);
  82 static int  kobil_tiocmset(struct tty_struct *tty, struct file *file,
  83                            unsigned int set, unsigned int clear);
  84 static void kobil_read_int_callback(struct urb *urb);
  85 static void kobil_write_callback(struct urb *purb);
  86 static void kobil_set_termios(struct tty_struct *tty,
  87                         struct usb_serial_port *port, struct ktermios *old);
  88
  89
  90 static struct usb_device_id id_table [] = {
  91         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  92         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  93         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  94         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  95         { }                     /* Terminating entry */
  96 };
  97
  98
  99 MODULE_DEVICE_TABLE(usb, id_table);
 100
 101 static struct usb_driver kobil_driver = {
 102         .name =         "kobil",
 103         .probe =        usb_serial_probe,
 104         .disconnect =   usb_serial_disconnect,
 105         .id_table =     id_table,
 106         .no_dynamic_id =        1,
 107 };
 108
 109
 110 static struct usb_serial_driver kobil_device = {
 111         .driver = {
 112                 .owner =        THIS_MODULE,
 113                 .name =         "kobil",
 114         },
 115         .description =          "KOBIL USB smart card terminal",
 116         .usb_driver =           &kobil_driver,
 117         .id_table =             id_table,
 118         .num_ports =            1,
 119         .attach =               kobil_startup,
 120         .shutdown =             kobil_shutdown,
 121         .ioctl =                kobil_ioctl,
 122         .set_termios =          kobil_set_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         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 154         if (!priv)
 155                 return -ENOMEM;
 156
 157         priv->filled = 0;
 158         priv->cur_pos = 0;
 159         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 160
 161         switch (priv->device_type) {
 162         case KOBIL_ADAPTER_B_PRODUCT_ID:
 163                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 164                 break;
 165         case KOBIL_ADAPTER_K_PRODUCT_ID:
 166                 printk(KERN_DEBUG
 167                   "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 168                 break;
 169         case KOBIL_USBTWIN_PRODUCT_ID:
 170                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 171                 break;
 172         case KOBIL_KAAN_SIM_PRODUCT_ID:
 173                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 174                 break;
 175         }
 176         usb_set_serial_port_data(serial->port[0], priv);
 177
 178         /* search for the necessary endpoints */
 179         pdev = serial->dev;
 180         actconfig = pdev->actconfig;
 181         interface = actconfig->interface[0];
 182         altsetting = interface->cur_altsetting;
 183         endpoint = altsetting->endpoint;
 184
 185         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 186                 endpoint = &altsetting->endpoint[i];
 187                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 188                         dbg("%s Found interrupt out endpoint. Address: %d",
 189                                 __func__, endpoint->desc.bEndpointAddress);
 190                         priv->write_int_endpoint_address =
 191                                 endpoint->desc.bEndpointAddress;
 192                 }
 193                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 194                         dbg("%s Found interrupt in  endpoint. Address: %d",
 195                                 __func__, endpoint->desc.bEndpointAddress);
 196                         priv->read_int_endpoint_address =
 197                                 endpoint->desc.bEndpointAddress;
 198                 }
 199         }
 200         return 0;
 201 }
 202
 203
 204 static void kobil_shutdown(struct usb_serial *serial)
 205 {
 206         int i;
 207         dbg("%s - port %d", __func__, serial->port[0]->number);
 208
 209         for (i = 0; i < serial->num_ports; ++i) {
 210                 while (serial->port[i]->port.count > 0)
 211                         kobil_close(serial->port[i]);
 212                 kfree(usb_get_serial_port_data(serial->port[i]));
 213                 usb_set_serial_port_data(serial->port[i], NULL);
 214         }
 215 }
 216
 217
 218 static int kobil_open(struct tty_struct *tty,
 219                         struct usb_serial_port *port, struct file *filp)
 220 {
 221         int result = 0;
 222         struct kobil_private *priv;
 223         unsigned char *transfer_buffer;
 224         int transfer_buffer_length = 8;
 225         int write_urb_transfer_buffer_length = 8;
 226
 227         dbg("%s - port %d", __func__, port->number);
 228         priv = usb_get_serial_port_data(port);
 229
 230         /* someone sets the dev to 0 if the close method has been called */
 231         port->interrupt_in_urb->dev = port->serial->dev;
 232
 233         if (tty) {
 234
 235                 /* Default to echo off and other sane device settings */
 236                 tty->termios->c_lflag = 0;
 237                 tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN |
 238                                                                  XCASE);
 239                 tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 240                 /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 241                 tty->termios->c_oflag &= ~ONLCR;
 242         }
 243         /* allocate memory for transfer buffer */
 244         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 245         if (!transfer_buffer)
 246                 return -ENOMEM;
 247
 248         /* allocate write_urb */
 249         if (!port->write_urb) {
 250                 dbg("%s - port %d  Allocating port->write_urb",
 251                                                 __func__, port->number);
 252                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 253                 if (!port->write_urb) {
 254                         dbg("%s - port %d usb_alloc_urb failed",
 255                                                 __func__, port->number);
 256                         kfree(transfer_buffer);
 257                         return -ENOMEM;
 258                 }
 259         }
 260
 261         /* allocate memory for write_urb transfer buffer */
 262         port->write_urb->transfer_buffer =
 263                         kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 264         if (!port->write_urb->transfer_buffer) {
 265                 kfree(transfer_buffer);
 266                 usb_free_urb(port->write_urb);
 267                 port->write_urb = NULL;
 268                 return -ENOMEM;
 269         }
 270
 271         /* get hardware version */
 272         result = usb_control_msg(port->serial->dev,
 273                           usb_rcvctrlpipe(port->serial->dev, 0),
 274                           SUSBCRequest_GetMisc,
 275                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 276                           SUSBCR_MSC_GetHWVersion,
 277                           0,
 278                           transfer_buffer,
 279                           transfer_buffer_length,
 280                           KOBIL_TIMEOUT
 281         );
 282         dbg("%s - port %d Send get_HW_version URB returns: %i",
 283                 __func__, port->number, result);
 284         dbg("Harware version: %i.%i.%i",
 285                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 286
 287         /* get firmware version */
 288         result = usb_control_msg(port->serial->dev,
 289                           usb_rcvctrlpipe(port->serial->dev, 0),
 290                           SUSBCRequest_GetMisc,
 291                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 292                           SUSBCR_MSC_GetFWVersion,
 293                           0,
 294                           transfer_buffer,
 295                           transfer_buffer_length,
 296                           KOBIL_TIMEOUT
 297         );
 298         dbg("%s - port %d Send get_FW_version URB returns: %i",
 299                                         __func__, port->number, result);
 300         dbg("Firmware version: %i.%i.%i",
 301                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 302
 303         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 304                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 305                 /* Setting Baudrate, Parity and Stopbits */
 306                 result = usb_control_msg(port->serial->dev,
 307                           usb_rcvctrlpipe(port->serial->dev, 0),
 308                           SUSBCRequest_SetBaudRateParityAndStopBits,
 309                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 310                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 311                                                         SUSBCR_SPASB_1StopBit,
 312                           0,
 313                           transfer_buffer,
 314                           0,
 315                           KOBIL_TIMEOUT
 316                 );
 317                 dbg("%s - port %d Send set_baudrate URB returns: %i",
 318                                         __func__, port->number, result);
 319
 320                 /* reset all queues */
 321                 result = usb_control_msg(port->serial->dev,
 322                           usb_rcvctrlpipe(port->serial->dev, 0),
 323                           SUSBCRequest_Misc,
 324                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 325                           SUSBCR_MSC_ResetAllQueues,
 326                           0,
 327                           transfer_buffer,
 328                           0,
 329                           KOBIL_TIMEOUT
 330                 );
 331                 dbg("%s - port %d Send reset_all_queues URB returns: %i",
 332                                         __func__, port->number, result);
 333         }
 334         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 335             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 336             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 337                 /* start reading (Adapter B 'cause PNP string) */
 338                 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 339                 dbg("%s - port %d Send read URB returns: %i",
 340                                         __func__, port->number, result);
 341         }
 342
 343         kfree(transfer_buffer);
 344         return 0;
 345 }
 346
 347
 348 static void kobil_close(struct usb_serial_port *port)
 349 {
 350         dbg("%s - port %d", __func__, port->number);
 351
 352         /* FIXME: Add rts/dtr methods */
 353         if (port->write_urb) {
 354                 usb_kill_urb(port->write_urb);
 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 (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_buffer_request_room(tty, urb->actual_length);
 398                 tty_insert_flip_string(tty, data, urb->actual_length);
 399                 tty_flip_buffer_push(tty);
 400         }
 401         tty_kref_put(tty);
 402         /* someone sets the dev to 0 if the close method has been called */
 403         port->interrupt_in_urb->dev = port->serial->dev;
 404
 405         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 406         dbg("%s - port %d Send read URB returns: %i",
 407                         __func__, port->number, result);
 408 }
 409
 410
 411 static void kobil_write_callback(struct urb *purb)
 412 {
 413 }
 414
 415
 416 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 417                         const unsigned char *buf, int count)
 418 {
 419         int length = 0;
 420         int result = 0;
 421         int todo = 0;
 422         struct kobil_private *priv;
 423
 424         if (count == 0) {
 425                 dbg("%s - port %d write request of 0 bytes",
 426                                                 __func__, port->number);
 427                 return 0;
 428         }
 429
 430         priv = usb_get_serial_port_data(port);
 431
 432         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 433                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 434                 return -ENOMEM;
 435         }
 436
 437         /* Copy data to buffer */
 438         memcpy(priv->buf + priv->filled, buf, count);
 439         usb_serial_debug_data(debug, &port->dev, __func__, count,
 440                                                 priv->buf + priv->filled);
 441         priv->filled = priv->filled + count;
 442
 443         /* only send complete block. TWIN, KAAN SIM and adapter K
 444            use the same protocol. */
 445         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 446              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 447                 /* stop reading (except TWIN and KAAN SIM) */
 448                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 449                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 450                         usb_kill_urb(port->interrupt_in_urb);
 451
 452                 todo = priv->filled - priv->cur_pos;
 453
 454                 while (todo > 0) {
 455                         /* max 8 byte in one urb (endpoint size) */
 456                         length = (todo < 8) ? todo : 8;
 457                         /* copy data to transfer buffer */
 458                         memcpy(port->write_urb->transfer_buffer,
 459                                         priv->buf + priv->cur_pos, length);
 460                         usb_fill_int_urb(port->write_urb,
 461                                   port->serial->dev,
 462                                   usb_sndintpipe(port->serial->dev,
 463                                         priv->write_int_endpoint_address),
 464                                   port->write_urb->transfer_buffer,
 465                                   length,
 466                                   kobil_write_callback,
 467                                   port,
 468                                   8
 469                         );
 470
 471                         priv->cur_pos = priv->cur_pos + length;
 472                         result = usb_submit_urb(port->write_urb, GFP_NOIO);
 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_NOIO);
 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, struct file *file)
 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, struct file *file,
 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         void *settings;
 634
 635         priv = usb_get_serial_port_data(port);
 636         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 637                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 638                 /* This device doesn't support ioctl calls */
 639                 *tty->termios = *old;
 640                 return;
 641         }
 642
 643         speed = tty_get_baud_rate(tty);
 644         switch (speed) {
 645         case 1200:
 646                 urb_val = SUSBCR_SBR_1200;
 647                 break;
 648         default:
 649                 speed = 9600;
 650         case 9600:
 651                 urb_val = SUSBCR_SBR_9600;
 652                 break;
 653         }
 654         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 655                                                         SUSBCR_SPASB_1StopBit;
 656
 657         settings = kzalloc(50, GFP_KERNEL);
 658         if (!settings)
 659                 return;
 660
 661         sprintf(settings, "%d ", speed);
 662
 663         if (c_cflag & PARENB) {
 664                 if  (c_cflag & PARODD) {
 665                         urb_val |= SUSBCR_SPASB_OddParity;
 666                         strcat(settings, "Odd Parity");
 667                 } else {
 668                         urb_val |= SUSBCR_SPASB_EvenParity;
 669                         strcat(settings, "Even Parity");
 670                 }
 671         } else {
 672                 urb_val |= SUSBCR_SPASB_NoParity;
 673                 strcat(settings, "No Parity");
 674         }
 675         tty->termios->c_cflag &= ~CMSPAR;
 676         tty_encode_baud_rate(tty, speed, speed);
 677
 678         result = usb_control_msg(port->serial->dev,
 679                   usb_rcvctrlpipe(port->serial->dev, 0),
 680                   SUSBCRequest_SetBaudRateParityAndStopBits,
 681                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 682                   urb_val,
 683                   0,
 684                   settings,
 685                   0,
 686                   KOBIL_TIMEOUT
 687                 );
 688         kfree(settings);
 689 }
 690
 691 static int kobil_ioctl(struct tty_struct *tty, struct file *file,
 692                                         unsigned int cmd, unsigned long arg)
 693 {
 694         struct usb_serial_port *port = tty->driver_data;
 695         struct kobil_private *priv = usb_get_serial_port_data(port);
 696         unsigned char *transfer_buffer;
 697         int transfer_buffer_length = 8;
 698         int result;
 699
 700         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 701                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 702                 /* This device doesn't support ioctl calls */
 703                 return -ENOIOCTLCMD;
 704
 705         switch (cmd) {
 706         case TCFLSH:
 707                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 708                 if (!transfer_buffer)
 709                         return -ENOBUFS;
 710
 711                 result = usb_control_msg(port->serial->dev,
 712                           usb_rcvctrlpipe(port->serial->dev, 0),
 713                           SUSBCRequest_Misc,
 714                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 715                           SUSBCR_MSC_ResetAllQueues,
 716                           0,
 717                           NULL, /* transfer_buffer, */
 718                           0,
 719                           KOBIL_TIMEOUT
 720                         );
 721
 722                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 723                 kfree(transfer_buffer);
 724                 return (result < 0) ? -EIO: 0;
 725         default:
 726                 return -ENOIOCTLCMD;
 727         }
 728 }
 729
 730 static int __init kobil_init(void)
 731 {
 732         int retval;
 733         retval = usb_serial_register(&kobil_device);
 734         if (retval)
 735                 goto failed_usb_serial_register;
 736         retval = usb_register(&kobil_driver);
 737         if (retval)
 738                 goto failed_usb_register;
 739
 740         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 741                DRIVER_DESC "\n");
 742
 743         return 0;
 744 failed_usb_register:
 745         usb_serial_deregister(&kobil_device);
 746 failed_usb_serial_register:
 747         return retval;
 748 }
 749
 750
 751 static void __exit kobil_exit(void)
 752 {
 753         usb_deregister(&kobil_driver);
 754         usb_serial_deregister(&kobil_device);
 755 }
 756
 757 module_init(kobil_init);
 758 module_exit(kobil_exit);
 759
 760 MODULE_AUTHOR(DRIVER_AUTHOR);
 761 MODULE_DESCRIPTION(DRIVER_DESC);
 762 MODULE_LICENSE("GPL");
 763
 764 module_param(debug, bool, S_IRUGO | S_IWUSR);
 765 MODULE_PARM_DESC(debug, "Debug enabled or not");