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,
  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         .release =              kobil_release,
 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_release(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                 kfree(usb_get_serial_port_data(serial->port[i]));
 211 }
 212
 213
 214 static int kobil_open(struct tty_struct *tty,
 215                         struct usb_serial_port *port, struct file *filp)
 216 {
 217         int result = 0;
 218         struct kobil_private *priv;
 219         unsigned char *transfer_buffer;
 220         int transfer_buffer_length = 8;
 221         int write_urb_transfer_buffer_length = 8;
 222
 223         dbg("%s - port %d", __func__, port->number);
 224         priv = usb_get_serial_port_data(port);
 225
 226         /* someone sets the dev to 0 if the close method has been called */
 227         port->interrupt_in_urb->dev = port->serial->dev;
 228
 229         if (tty) {
 230
 231                 /* Default to echo off and other sane device settings */
 232                 tty->termios->c_lflag = 0;
 233                 tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN |
 234                                                                  XCASE);
 235                 tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 236                 /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 237                 tty->termios->c_oflag &= ~ONLCR;
 238         }
 239         /* allocate memory for transfer buffer */
 240         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 241         if (!transfer_buffer)
 242                 return -ENOMEM;
 243
 244         /* allocate write_urb */
 245         if (!port->write_urb) {
 246                 dbg("%s - port %d  Allocating port->write_urb",
 247                                                 __func__, port->number);
 248                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 249                 if (!port->write_urb) {
 250                         dbg("%s - port %d usb_alloc_urb failed",
 251                                                 __func__, port->number);
 252                         kfree(transfer_buffer);
 253                         return -ENOMEM;
 254                 }
 255         }
 256
 257         /* allocate memory for write_urb transfer buffer */
 258         port->write_urb->transfer_buffer =
 259                         kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 260         if (!port->write_urb->transfer_buffer) {
 261                 kfree(transfer_buffer);
 262                 usb_free_urb(port->write_urb);
 263                 port->write_urb = NULL;
 264                 return -ENOMEM;
 265         }
 266
 267         /* get hardware version */
 268         result = usb_control_msg(port->serial->dev,
 269                           usb_rcvctrlpipe(port->serial->dev, 0),
 270                           SUSBCRequest_GetMisc,
 271                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 272                           SUSBCR_MSC_GetHWVersion,
 273                           0,
 274                           transfer_buffer,
 275                           transfer_buffer_length,
 276                           KOBIL_TIMEOUT
 277         );
 278         dbg("%s - port %d Send get_HW_version URB returns: %i",
 279                 __func__, port->number, result);
 280         dbg("Harware version: %i.%i.%i",
 281                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 282
 283         /* get firmware version */
 284         result = usb_control_msg(port->serial->dev,
 285                           usb_rcvctrlpipe(port->serial->dev, 0),
 286                           SUSBCRequest_GetMisc,
 287                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 288                           SUSBCR_MSC_GetFWVersion,
 289                           0,
 290                           transfer_buffer,
 291                           transfer_buffer_length,
 292                           KOBIL_TIMEOUT
 293         );
 294         dbg("%s - port %d Send get_FW_version URB returns: %i",
 295                                         __func__, port->number, result);
 296         dbg("Firmware version: %i.%i.%i",
 297                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 298
 299         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 300                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 301                 /* Setting Baudrate, Parity and Stopbits */
 302                 result = usb_control_msg(port->serial->dev,
 303                           usb_rcvctrlpipe(port->serial->dev, 0),
 304                           SUSBCRequest_SetBaudRateParityAndStopBits,
 305                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 306                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 307                                                         SUSBCR_SPASB_1StopBit,
 308                           0,
 309                           transfer_buffer,
 310                           0,
 311                           KOBIL_TIMEOUT
 312                 );
 313                 dbg("%s - port %d Send set_baudrate URB returns: %i",
 314                                         __func__, port->number, result);
 315
 316                 /* reset all queues */
 317                 result = usb_control_msg(port->serial->dev,
 318                           usb_rcvctrlpipe(port->serial->dev, 0),
 319                           SUSBCRequest_Misc,
 320                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 321                           SUSBCR_MSC_ResetAllQueues,
 322                           0,
 323                           transfer_buffer,
 324                           0,
 325                           KOBIL_TIMEOUT
 326                 );
 327                 dbg("%s - port %d Send reset_all_queues URB returns: %i",
 328                                         __func__, port->number, result);
 329         }
 330         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 331             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 332             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 333                 /* start reading (Adapter B 'cause PNP string) */
 334                 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 335                 dbg("%s - port %d Send read URB returns: %i",
 336                                         __func__, port->number, result);
 337         }
 338
 339         kfree(transfer_buffer);
 340         return 0;
 341 }
 342
 343
 344 static void kobil_close(struct usb_serial_port *port)
 345 {
 346         dbg("%s - port %d", __func__, port->number);
 347
 348         /* FIXME: Add rts/dtr methods */
 349         if (port->write_urb) {
 350                 usb_kill_urb(port->write_urb);
 351                 usb_free_urb(port->write_urb);
 352                 port->write_urb = NULL;
 353         }
 354         usb_kill_urb(port->interrupt_in_urb);
 355 }
 356
 357
 358 static void kobil_read_int_callback(struct urb *urb)
 359 {
 360         int result;
 361         struct usb_serial_port *port = urb->context;
 362         struct tty_struct *tty;
 363         unsigned char *data = urb->transfer_buffer;
 364         int status = urb->status;
 365 /*      char *dbg_data; */
 366
 367         dbg("%s - port %d", __func__, port->number);
 368
 369         if (status) {
 370                 dbg("%s - port %d Read int status not zero: %d",
 371                     __func__, port->number, status);
 372                 return;
 373         }
 374
 375         tty = tty_port_tty_get(&port->port);
 376         if (urb->actual_length) {
 377
 378                 /* BEGIN DEBUG */
 379                 /*
 380                   dbg_data = kzalloc((3 *  purb->actual_length + 10)
 381                                                 * sizeof(char), GFP_KERNEL);
 382                   if (! dbg_data) {
 383                           return;
 384                   }
 385                   for (i = 0; i < purb->actual_length; i++) {
 386                           sprintf(dbg_data +3*i, "%02X ", data[i]);
 387                   }
 388                   dbg(" <-- %s", dbg_data);
 389                   kfree(dbg_data);
 390                 */
 391                 /* END DEBUG */
 392
 393                 tty_buffer_request_room(tty, urb->actual_length);
 394                 tty_insert_flip_string(tty, data, urb->actual_length);
 395                 tty_flip_buffer_push(tty);
 396         }
 397         tty_kref_put(tty);
 398         /* someone sets the dev to 0 if the close method has been called */
 399         port->interrupt_in_urb->dev = port->serial->dev;
 400
 401         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 402         dbg("%s - port %d Send read URB returns: %i",
 403                         __func__, port->number, result);
 404 }
 405
 406
 407 static void kobil_write_callback(struct urb *purb)
 408 {
 409 }
 410
 411
 412 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 413                         const unsigned char *buf, int count)
 414 {
 415         int length = 0;
 416         int result = 0;
 417         int todo = 0;
 418         struct kobil_private *priv;
 419
 420         if (count == 0) {
 421                 dbg("%s - port %d write request of 0 bytes",
 422                                                 __func__, port->number);
 423                 return 0;
 424         }
 425
 426         priv = usb_get_serial_port_data(port);
 427
 428         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 429                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 430                 return -ENOMEM;
 431         }
 432
 433         /* Copy data to buffer */
 434         memcpy(priv->buf + priv->filled, buf, count);
 435         usb_serial_debug_data(debug, &port->dev, __func__, count,
 436                                                 priv->buf + priv->filled);
 437         priv->filled = priv->filled + count;
 438
 439         /* only send complete block. TWIN, KAAN SIM and adapter K
 440            use the same protocol. */
 441         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 442              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 443                 /* stop reading (except TWIN and KAAN SIM) */
 444                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 445                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 446                         usb_kill_urb(port->interrupt_in_urb);
 447
 448                 todo = priv->filled - priv->cur_pos;
 449
 450                 while (todo > 0) {
 451                         /* max 8 byte in one urb (endpoint size) */
 452                         length = (todo < 8) ? todo : 8;
 453                         /* copy data to transfer buffer */
 454                         memcpy(port->write_urb->transfer_buffer,
 455                                         priv->buf + priv->cur_pos, length);
 456                         usb_fill_int_urb(port->write_urb,
 457                                   port->serial->dev,
 458                                   usb_sndintpipe(port->serial->dev,
 459                                         priv->write_int_endpoint_address),
 460                                   port->write_urb->transfer_buffer,
 461                                   length,
 462                                   kobil_write_callback,
 463                                   port,
 464                                   8
 465                         );
 466
 467                         priv->cur_pos = priv->cur_pos + length;
 468                         result = usb_submit_urb(port->write_urb, GFP_NOIO);
 469                         dbg("%s - port %d Send write URB returns: %i",
 470                                         __func__, port->number, result);
 471                         todo = priv->filled - priv->cur_pos;
 472
 473                         if (todo > 0)
 474                                 msleep(24);
 475                 }
 476
 477                 priv->filled = 0;
 478                 priv->cur_pos = 0;
 479
 480                 /* someone sets the dev to 0 if the close method
 481                    has been called */
 482                 port->interrupt_in_urb->dev = port->serial->dev;
 483
 484                 /* start reading (except TWIN and KAAN SIM) */
 485                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 486                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 487                         /* someone sets the dev to 0 if the close method has
 488                            been called */
 489                         port->interrupt_in_urb->dev = port->serial->dev;
 490
 491                         result = usb_submit_urb(port->interrupt_in_urb,
 492                                                                 GFP_NOIO);
 493                         dbg("%s - port %d Send read URB returns: %i",
 494                                         __func__, port->number, result);
 495                 }
 496         }
 497         return count;
 498 }
 499
 500
 501 static int kobil_write_room(struct tty_struct *tty)
 502 {
 503         /* dbg("%s - port %d", __func__, port->number); */
 504         /* FIXME */
 505         return 8;
 506 }
 507
 508
 509 static int kobil_tiocmget(struct tty_struct *tty, struct file *file)
 510 {
 511         struct usb_serial_port *port = tty->driver_data;
 512         struct kobil_private *priv;
 513         int result;
 514         unsigned char *transfer_buffer;
 515         int transfer_buffer_length = 8;
 516
 517         priv = usb_get_serial_port_data(port);
 518         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 519                         || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 520                 /* This device doesn't support ioctl calls */
 521                 return -EINVAL;
 522         }
 523
 524         /* allocate memory for transfer buffer */
 525         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 526         if (!transfer_buffer)
 527                 return -ENOMEM;
 528
 529         result = usb_control_msg(port->serial->dev,
 530                           usb_rcvctrlpipe(port->serial->dev, 0),
 531                           SUSBCRequest_GetStatusLineState,
 532                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 533                           0,
 534                           0,
 535                           transfer_buffer,
 536                           transfer_buffer_length,
 537                           KOBIL_TIMEOUT);
 538
 539         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 540             __func__, port->number, result, transfer_buffer[0]);
 541
 542         result = 0;
 543         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 544                 result = TIOCM_DSR;
 545         kfree(transfer_buffer);
 546         return result;
 547 }
 548
 549 static int kobil_tiocmset(struct tty_struct *tty, struct file *file,
 550                            unsigned int set, unsigned int clear)
 551 {
 552         struct usb_serial_port *port = tty->driver_data;
 553         struct kobil_private *priv;
 554         int result;
 555         int dtr = 0;
 556         int rts = 0;
 557         unsigned char *transfer_buffer;
 558         int transfer_buffer_length = 8;
 559
 560         /* FIXME: locking ? */
 561         priv = usb_get_serial_port_data(port);
 562         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 563                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 564                 /* This device doesn't support ioctl calls */
 565                 return -EINVAL;
 566         }
 567
 568         /* allocate memory for transfer buffer */
 569         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 570         if (!transfer_buffer)
 571                 return -ENOMEM;
 572
 573         if (set & TIOCM_RTS)
 574                 rts = 1;
 575         if (set & TIOCM_DTR)
 576                 dtr = 1;
 577         if (clear & TIOCM_RTS)
 578                 rts = 0;
 579         if (clear & TIOCM_DTR)
 580                 dtr = 0;
 581
 582         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 583                 if (dtr != 0)
 584                         dbg("%s - port %d Setting DTR",
 585                                                 __func__, port->number);
 586                 else
 587                         dbg("%s - port %d Clearing DTR",
 588                                                 __func__, port->number);
 589                 result = usb_control_msg(port->serial->dev,
 590                           usb_rcvctrlpipe(port->serial->dev, 0),
 591                           SUSBCRequest_SetStatusLinesOrQueues,
 592                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 593                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 594                           0,
 595                           transfer_buffer,
 596                           0,
 597                           KOBIL_TIMEOUT);
 598         } else {
 599                 if (rts != 0)
 600                         dbg("%s - port %d Setting RTS",
 601                                                 __func__, port->number);
 602                 else
 603                         dbg("%s - port %d Clearing RTS",
 604                                                 __func__, port->number);
 605                 result = usb_control_msg(port->serial->dev,
 606                         usb_rcvctrlpipe(port->serial->dev, 0),
 607                         SUSBCRequest_SetStatusLinesOrQueues,
 608                         USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 609                         ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 610                         0,
 611                         transfer_buffer,
 612                         0,
 613                         KOBIL_TIMEOUT);
 614         }
 615         dbg("%s - port %d Send set_status_line URB returns: %i",
 616                                         __func__, port->number, result);
 617         kfree(transfer_buffer);
 618         return (result < 0) ? result : 0;
 619 }
 620
 621 static void kobil_set_termios(struct tty_struct *tty,
 622                         struct usb_serial_port *port, struct ktermios *old)
 623 {
 624         struct kobil_private *priv;
 625         int result;
 626         unsigned short urb_val = 0;
 627         int c_cflag = tty->termios->c_cflag;
 628         speed_t speed;
 629         void *settings;
 630
 631         priv = usb_get_serial_port_data(port);
 632         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 633                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 634                 /* This device doesn't support ioctl calls */
 635                 *tty->termios = *old;
 636                 return;
 637         }
 638
 639         speed = tty_get_baud_rate(tty);
 640         switch (speed) {
 641         case 1200:
 642                 urb_val = SUSBCR_SBR_1200;
 643                 break;
 644         default:
 645                 speed = 9600;
 646         case 9600:
 647                 urb_val = SUSBCR_SBR_9600;
 648                 break;
 649         }
 650         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 651                                                         SUSBCR_SPASB_1StopBit;
 652
 653         settings = kzalloc(50, GFP_KERNEL);
 654         if (!settings)
 655                 return;
 656
 657         sprintf(settings, "%d ", speed);
 658
 659         if (c_cflag & PARENB) {
 660                 if  (c_cflag & PARODD) {
 661                         urb_val |= SUSBCR_SPASB_OddParity;
 662                         strcat(settings, "Odd Parity");
 663                 } else {
 664                         urb_val |= SUSBCR_SPASB_EvenParity;
 665                         strcat(settings, "Even Parity");
 666                 }
 667         } else {
 668                 urb_val |= SUSBCR_SPASB_NoParity;
 669                 strcat(settings, "No Parity");
 670         }
 671         tty->termios->c_cflag &= ~CMSPAR;
 672         tty_encode_baud_rate(tty, speed, speed);
 673
 674         result = usb_control_msg(port->serial->dev,
 675                   usb_rcvctrlpipe(port->serial->dev, 0),
 676                   SUSBCRequest_SetBaudRateParityAndStopBits,
 677                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 678                   urb_val,
 679                   0,
 680                   settings,
 681                   0,
 682                   KOBIL_TIMEOUT
 683                 );
 684         kfree(settings);
 685 }
 686
 687 static int kobil_ioctl(struct tty_struct *tty, struct file *file,
 688                                         unsigned int cmd, unsigned long arg)
 689 {
 690         struct usb_serial_port *port = tty->driver_data;
 691         struct kobil_private *priv = usb_get_serial_port_data(port);
 692         unsigned char *transfer_buffer;
 693         int transfer_buffer_length = 8;
 694         int result;
 695
 696         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 697                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 698                 /* This device doesn't support ioctl calls */
 699                 return -ENOIOCTLCMD;
 700
 701         switch (cmd) {
 702         case TCFLSH:
 703                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 704                 if (!transfer_buffer)
 705                         return -ENOBUFS;
 706
 707                 result = usb_control_msg(port->serial->dev,
 708                           usb_rcvctrlpipe(port->serial->dev, 0),
 709                           SUSBCRequest_Misc,
 710                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 711                           SUSBCR_MSC_ResetAllQueues,
 712                           0,
 713                           NULL, /* transfer_buffer, */
 714                           0,
 715                           KOBIL_TIMEOUT
 716                         );
 717
 718                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 719                 kfree(transfer_buffer);
 720                 return (result < 0) ? -EIO: 0;
 721         default:
 722                 return -ENOIOCTLCMD;
 723         }
 724 }
 725
 726 static int __init kobil_init(void)
 727 {
 728         int retval;
 729         retval = usb_serial_register(&kobil_device);
 730         if (retval)
 731                 goto failed_usb_serial_register;
 732         retval = usb_register(&kobil_driver);
 733         if (retval)
 734                 goto failed_usb_register;
 735
 736         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 737                DRIVER_DESC "\n");
 738
 739         return 0;
 740 failed_usb_register:
 741         usb_serial_deregister(&kobil_device);
 742 failed_usb_serial_register:
 743         return retval;
 744 }
 745
 746
 747 static void __exit kobil_exit(void)
 748 {
 749         usb_deregister(&kobil_driver);
 750         usb_serial_deregister(&kobil_device);
 751 }
 752
 753 module_init(kobil_init);
 754 module_exit(kobil_exit);
 755
 756 MODULE_AUTHOR(DRIVER_AUTHOR);
 757 MODULE_DESCRIPTION(DRIVER_DESC);
 758 MODULE_LICENSE("GPL");
 759
 760 module_param(debug, bool, S_IRUGO | S_IWUSR);
 761 MODULE_PARM_DESC(debug, "Debug enabled or not");