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 <asm/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
 159         priv->filled = 0;
 160         priv->cur_pos = 0;
 161         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 162
 163         switch (priv->device_type){
 164         case KOBIL_ADAPTER_B_PRODUCT_ID:
 165                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 166                 break;
 167         case KOBIL_ADAPTER_K_PRODUCT_ID:
 168                 printk(KERN_DEBUG "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", __func__, endpoint->desc.bEndpointAddress);
 190                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 191                 }
 192                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 193                         dbg("%s Found interrupt in  endpoint. Address: %d", __func__, endpoint->desc.bEndpointAddress);
 194                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 195                 }
 196         }
 197         return 0;
 198 }
 199
 200
 201 static void kobil_shutdown (struct usb_serial *serial)
 202 {
 203         int i;
 204         dbg("%s - port %d", __func__, serial->port[0]->number);
 205
 206         for (i=0; i < serial->num_ports; ++i) {
 207                 while (serial->port[i]->port.count > 0) {
 208                         kobil_close (NULL, serial->port[i], NULL);
 209                 }
 210                 kfree(usb_get_serial_port_data(serial->port[i]));
 211                 usb_set_serial_port_data(serial->port[i], NULL);
 212         }
 213 }
 214
 215
 216 static int kobil_open(struct tty_struct *tty,
 217                         struct usb_serial_port *port, struct file *filp)
 218 {
 219         int result = 0;
 220         struct kobil_private *priv;
 221         unsigned char *transfer_buffer;
 222         int transfer_buffer_length = 8;
 223         int write_urb_transfer_buffer_length = 8;
 224
 225         dbg("%s - port %d", __func__, port->number);
 226         priv = usb_get_serial_port_data(port);
 227
 228         // someone sets the dev to 0 if the close method has been called
 229         port->interrupt_in_urb->dev = port->serial->dev;
 230
 231
 232         /* force low_latency on so that our tty_push actually forces
 233          * the data through, otherwise it is scheduled, and with high
 234          * data rates (like with OHCI) data can get lost.
 235          */
 236         if (tty) {
 237                 tty->low_latency = 1;
 238
 239                 /* Default to echo off and other sane device settings */
 240                 tty->termios->c_lflag = 0;
 241                 tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 242                 tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 243                 tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
 244         }
 245         // allocate memory for transfer buffer
 246         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 247         if (! transfer_buffer) {
 248                 return -ENOMEM;
 249         }
 250
 251         // allocate write_urb
 252         if (!port->write_urb) {
 253                 dbg("%s - port %d  Allocating port->write_urb", __func__, port->number);
 254                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 255                 if (!port->write_urb) {
 256                         dbg("%s - port %d usb_alloc_urb failed", __func__, port->number);
 257                         kfree(transfer_buffer);
 258                         return -ENOMEM;
 259                 }
 260         }
 261
 262         // allocate memory for write_urb transfer buffer
 263         port->write_urb->transfer_buffer = 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", __func__, port->number, result);
 283         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 284
 285         // get firmware version
 286         result = usb_control_msg( port->serial->dev,
 287                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 288                                   SUSBCRequest_GetMisc,
 289                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 290                                   SUSBCR_MSC_GetFWVersion,
 291                                   0,
 292                                   transfer_buffer,
 293                                   transfer_buffer_length,
 294                                   KOBIL_TIMEOUT
 295                 );
 296         dbg("%s - port %d Send get_FW_version URB returns: %i", __func__, port->number, result);
 297         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 298
 299         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 300                 // Setting Baudrate, Parity and Stopbits
 301                 result = usb_control_msg( port->serial->dev,
 302                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 303                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 304                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 305                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 306                                           0,
 307                                           transfer_buffer,
 308                                           0,
 309                                           KOBIL_TIMEOUT
 310                         );
 311                 dbg("%s - port %d Send set_baudrate URB returns: %i", __func__, port->number, result);
 312
 313                 // reset all queues
 314                 result = usb_control_msg( port->serial->dev,
 315                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 316                                           SUSBCRequest_Misc,
 317                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 318                                           SUSBCR_MSC_ResetAllQueues,
 319                                           0,
 320                                           transfer_buffer,
 321                                           0,
 322                                           KOBIL_TIMEOUT
 323                         );
 324                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __func__, port->number, result);
 325         }
 326         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 327             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 328                 // start reading (Adapter B 'cause PNP string)
 329                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 330                 dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
 331         }
 332
 333         kfree(transfer_buffer);
 334         return 0;
 335 }
 336
 337
 338 static void kobil_close(struct tty_struct *tty,
 339                         struct usb_serial_port *port, struct file *filp)
 340 {
 341         dbg("%s - port %d", __func__, port->number);
 342
 343         if (port->write_urb) {
 344                 usb_kill_urb(port->write_urb);
 345                 usb_free_urb( port->write_urb );
 346                 port->write_urb = NULL;
 347         }
 348         usb_kill_urb(port->interrupt_in_urb);
 349 }
 350
 351
 352 static void kobil_read_int_callback(struct urb *urb)
 353 {
 354         int result;
 355         struct usb_serial_port *port = urb->context;
 356         struct tty_struct *tty;
 357         unsigned char *data = urb->transfer_buffer;
 358         int status = urb->status;
 359 //      char *dbg_data;
 360
 361         dbg("%s - port %d", __func__, port->number);
 362
 363         if (status) {
 364                 dbg("%s - port %d Read int status not zero: %d",
 365                     __func__, port->number, status);
 366                 return;
 367         }
 368
 369         tty = port->port.tty;
 370         if (urb->actual_length) {
 371
 372                 // BEGIN DEBUG
 373                 /*
 374                   dbg_data = kzalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 375                   if (! dbg_data) {
 376                   return;
 377                   }
 378                   for (i = 0; i < purb->actual_length; i++) {
 379                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 380                   }
 381                   dbg(" <-- %s", dbg_data );
 382                   kfree(dbg_data);
 383                 */
 384                 // END DEBUG
 385
 386                 tty_buffer_request_room(tty, urb->actual_length);
 387                 tty_insert_flip_string(tty, data, urb->actual_length);
 388                 tty_flip_buffer_push(tty);
 389         }
 390
 391         // someone sets the dev to 0 if the close method has been called
 392         port->interrupt_in_urb->dev = port->serial->dev;
 393
 394         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 395         dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
 396 }
 397
 398
 399 static void kobil_write_callback( struct urb *purb )
 400 {
 401 }
 402
 403
 404 static int kobil_write (struct tty_struct *tty, struct usb_serial_port *port,
 405                         const unsigned char *buf, int count)
 406 {
 407         int length = 0;
 408         int result = 0;
 409         int todo = 0;
 410         struct kobil_private * priv;
 411
 412         if (count == 0) {
 413                 dbg("%s - port %d write request of 0 bytes", __func__, port->number);
 414                 return 0;
 415         }
 416
 417         priv = usb_get_serial_port_data(port);
 418
 419         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 420                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 421                 return -ENOMEM;
 422         }
 423
 424         // Copy data to buffer
 425         memcpy (priv->buf + priv->filled, buf, count);
 426         usb_serial_debug_data(debug, &port->dev, __func__, count, priv->buf + priv->filled);
 427         priv->filled = priv->filled + count;
 428
 429         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 430         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 431              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 432
 433                 // stop reading (except TWIN and KAAN SIM)
 434                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
 435                         usb_kill_urb(port->interrupt_in_urb);
 436
 437                 todo = priv->filled - priv->cur_pos;
 438
 439                 while(todo > 0) {
 440                         // max 8 byte in one urb (endpoint size)
 441                         length = (todo < 8) ? todo : 8;
 442                         // copy data to transfer buffer
 443                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 444                         usb_fill_int_urb( port->write_urb,
 445                                           port->serial->dev,
 446                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 447                                           port->write_urb->transfer_buffer,
 448                                           length,
 449                                           kobil_write_callback,
 450                                           port,
 451                                           8
 452                                 );
 453
 454                         priv->cur_pos = priv->cur_pos + length;
 455                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 456                         dbg("%s - port %d Send write URB returns: %i", __func__, port->number, result);
 457                         todo = priv->filled - priv->cur_pos;
 458
 459                         if (todo > 0) {
 460                                 msleep(24);
 461                         }
 462
 463                 } // end while
 464
 465                 priv->filled = 0;
 466                 priv->cur_pos = 0;
 467
 468                 // someone sets the dev to 0 if the close method has been called
 469                 port->interrupt_in_urb->dev = port->serial->dev;
 470
 471                 // start reading (except TWIN and KAAN SIM)
 472                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 473                         // someone sets the dev to 0 if the close method has been called
 474                         port->interrupt_in_urb->dev = port->serial->dev;
 475
 476                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 477                         dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
 478                 }
 479         }
 480         return count;
 481 }
 482
 483
 484 static int kobil_write_room (struct tty_struct *tty)
 485 {
 486         //dbg("%s - port %d", __func__, port->number);
 487         /* FIXME */
 488         return 8;
 489 }
 490
 491
 492 static int kobil_tiocmget(struct tty_struct *tty, struct file *file)
 493 {
 494         struct usb_serial_port *port = tty->driver_data;
 495         struct kobil_private * priv;
 496         int result;
 497         unsigned char *transfer_buffer;
 498         int transfer_buffer_length = 8;
 499
 500         priv = usb_get_serial_port_data(port);
 501         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 502                 // This device doesn't support ioctl calls
 503                 return -EINVAL;
 504         }
 505
 506         // allocate memory for transfer buffer
 507         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 508         if (!transfer_buffer) {
 509                 return -ENOMEM;
 510         }
 511
 512         result = usb_control_msg( port->serial->dev,
 513                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 514                                   SUSBCRequest_GetStatusLineState,
 515                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 516                                   0,
 517                                   0,
 518                                   transfer_buffer,
 519                                   transfer_buffer_length,
 520                                   KOBIL_TIMEOUT);
 521
 522         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 523             __func__, port->number, result, transfer_buffer[0]);
 524
 525         result = 0;
 526         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 527                 result = TIOCM_DSR;
 528         kfree(transfer_buffer);
 529         return result;
 530 }
 531
 532 static int kobil_tiocmset(struct tty_struct *tty, struct file *file,
 533                            unsigned int set, unsigned int clear)
 534 {
 535         struct usb_serial_port *port = tty->driver_data;
 536         struct kobil_private * priv;
 537         int result;
 538         int dtr = 0;
 539         int rts = 0;
 540         unsigned char *transfer_buffer;
 541         int transfer_buffer_length = 8;
 542
 543         /* FIXME: locking ? */
 544         priv = usb_get_serial_port_data(port);
 545         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 546                 // This device doesn't support ioctl calls
 547                 return -EINVAL;
 548         }
 549
 550         // allocate memory for transfer buffer
 551         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 552         if (! transfer_buffer) {
 553                 return -ENOMEM;
 554         }
 555
 556         if (set & TIOCM_RTS)
 557                 rts = 1;
 558         if (set & TIOCM_DTR)
 559                 dtr = 1;
 560         if (clear & TIOCM_RTS)
 561                 rts = 0;
 562         if (clear & TIOCM_DTR)
 563                 dtr = 0;
 564
 565         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 566                 if (dtr != 0)
 567                         dbg("%s - port %d Setting DTR", __func__, port->number);
 568                 else
 569                         dbg("%s - port %d Clearing DTR", __func__, port->number);
 570                 result = usb_control_msg( port->serial->dev,
 571                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 572                                           SUSBCRequest_SetStatusLinesOrQueues,
 573                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 574                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 575                                           0,
 576                                           transfer_buffer,
 577                                           0,
 578                                           KOBIL_TIMEOUT);
 579         } else {
 580                 if (rts != 0)
 581                         dbg("%s - port %d Setting RTS", __func__, port->number);
 582                 else
 583                         dbg("%s - port %d Clearing RTS", __func__, port->number);
 584                 result = usb_control_msg( port->serial->dev,
 585                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 586                                           SUSBCRequest_SetStatusLinesOrQueues,
 587                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 588                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 589                                           0,
 590                                           transfer_buffer,
 591                                           0,
 592                                           KOBIL_TIMEOUT);
 593         }
 594         dbg("%s - port %d Send set_status_line URB returns: %i", __func__, port->number, result);
 595         kfree(transfer_buffer);
 596         return (result < 0) ? result : 0;
 597 }
 598
 599 static void kobil_set_termios(struct tty_struct *tty,
 600                         struct usb_serial_port *port, struct ktermios *old)
 601 {
 602         struct kobil_private * priv;
 603         int result;
 604         unsigned short urb_val = 0;
 605         int c_cflag = tty->termios->c_cflag;
 606         speed_t speed;
 607         void * settings;
 608
 609         priv = usb_get_serial_port_data(port);
 610         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 611                 // This device doesn't support ioctl calls
 612                 return;
 613
 614         switch (speed = tty_get_baud_rate(tty)) {
 615                 case 1200:
 616                         urb_val = SUSBCR_SBR_1200;
 617                         break;
 618                 default:
 619                         speed = 9600;
 620                 case 9600:
 621                         urb_val = SUSBCR_SBR_9600;
 622                         break;
 623         }
 624         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 625
 626         settings = kzalloc(50, GFP_KERNEL);
 627         if (! settings)
 628                 return;
 629
 630         sprintf(settings, "%d ", speed);
 631
 632         if (c_cflag & PARENB) {
 633                 if  (c_cflag & PARODD) {
 634                         urb_val |= SUSBCR_SPASB_OddParity;
 635                         strcat(settings, "Odd Parity");
 636                 } else {
 637                         urb_val |= SUSBCR_SPASB_EvenParity;
 638                         strcat(settings, "Even Parity");
 639                 }
 640         } else {
 641                 urb_val |= SUSBCR_SPASB_NoParity;
 642                 strcat(settings, "No Parity");
 643         }
 644         tty->termios->c_cflag &= ~CMSPAR;
 645         tty_encode_baud_rate(tty, speed, speed);
 646
 647         result = usb_control_msg( port->serial->dev,
 648                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 649                                   SUSBCRequest_SetBaudRateParityAndStopBits,
 650                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 651                                   urb_val,
 652                                   0,
 653                                   settings,
 654                                   0,
 655                                   KOBIL_TIMEOUT
 656                 );
 657         kfree(settings);
 658 }
 659
 660 static int kobil_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
 661 {
 662         struct usb_serial_port *port = tty->driver_data;
 663         struct kobil_private * priv = usb_get_serial_port_data(port);
 664         unsigned char *transfer_buffer;
 665         int transfer_buffer_length = 8;
 666         int result;
 667
 668         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 669                 // This device doesn't support ioctl calls
 670                 return 0;
 671
 672         switch (cmd) {
 673         case TCFLSH:
 674                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 675                 if (! transfer_buffer)
 676                         return -ENOBUFS;
 677
 678                 result = usb_control_msg( port->serial->dev,
 679                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 680                                           SUSBCRequest_Misc,
 681                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 682                                           SUSBCR_MSC_ResetAllQueues,
 683                                           0,
 684                                           NULL,//transfer_buffer,
 685                                           0,
 686                                           KOBIL_TIMEOUT
 687                         );
 688
 689                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 690                 kfree(transfer_buffer);
 691                 return (result < 0) ? -EIO: 0;
 692         default:
 693                 return -ENOIOCTLCMD;
 694         }
 695 }
 696
 697 static int __init kobil_init (void)
 698 {
 699         int retval;
 700         retval = usb_serial_register(&kobil_device);
 701         if (retval)
 702                 goto failed_usb_serial_register;
 703         retval = usb_register(&kobil_driver);
 704         if (retval)
 705                 goto failed_usb_register;
 706
 707         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 708         info(DRIVER_DESC);
 709
 710         return 0;
 711 failed_usb_register:
 712         usb_serial_deregister(&kobil_device);
 713 failed_usb_serial_register:
 714         return retval;
 715 }
 716
 717
 718 static void __exit kobil_exit (void)
 719 {
 720         usb_deregister (&kobil_driver);
 721         usb_serial_deregister (&kobil_device);
 722 }
 723
 724 module_init(kobil_init);
 725 module_exit(kobil_exit);
 726
 727 MODULE_AUTHOR( DRIVER_AUTHOR );
 728 MODULE_DESCRIPTION( DRIVER_DESC );
 729 MODULE_LICENSE( "GPL" );
 730
 731 module_param(debug, bool, S_IRUGO | S_IWUSR);
 732 MODULE_PARM_DESC(debug, "Debug enabled or not");