drivers/usb/serial/kobil_sct.c

   1 /*
   2  *  KOBIL USB Smart Card Terminal Driver
   3  *
   4  *  Copyright (C) 2002  KOBIL Systems GmbH
   5  *  Author: Thomas Wahrenbruch
   6  *
   7  *  Contact: linuxusb@kobil.de
   8  *
   9  *  This program is largely derived from work by the linux-usb group
  10  *  and associated source files.  Please see the usb/serial files for
  11  *  individual credits and copyrights.
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License as published by
  15  *  the Free Software Foundation; either version 2 of the License, or
  16  *  (at your option) any later version.
  17  *
  18  *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
  19  *  patience.
  20  *
  21  * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
  22  * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
  23  *
  24  * (21/05/2004) tw
  25  *      Fix bug with P'n'P readers
  26  *
  27  * (28/05/2003) tw
  28  *      Add support for KAAN SIM
  29  *
  30  * (12/09/2002) tw
  31  *      Adapted to 2.5.
  32  *
  33  * (11/08/2002) tw
  34  *      Initial version.
  35  */
  36
  37
  38 #include <linux/kernel.h>
  39 #include <linux/errno.h>
  40 #include <linux/init.h>
  41 #include <linux/slab.h>
  42 #include <linux/tty.h>
  43 #include <linux/tty_driver.h>
  44 #include <linux/tty_flip.h>
  45 #include <linux/module.h>
  46 #include <linux/spinlock.h>
  47 #include <linux/uaccess.h>
  48 #include <linux/usb.h>
  49 #include <linux/usb/serial.h>
  50 #include <linux/ioctl.h>
  51 #include "kobil_sct.h"
  52
  53 static int debug;
  54
  55 /* Version Information */
  56 #define DRIVER_VERSION "21/05/2004"
  57 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  58 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  59
  60 #define KOBIL_VENDOR_ID                 0x0D46
  61 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  62 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  63 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  64 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  65
  66 #define KOBIL_TIMEOUT           500
  67 #define KOBIL_BUF_LENGTH        300
  68
  69
  70 /* Function prototypes */
  71 static int  kobil_startup(struct usb_serial *serial);
  72 static void kobil_release(struct usb_serial *serial);
  73 static int  kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
  74 static void kobil_close(struct usb_serial_port *port);
  75 static int  kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
  76                          const unsigned char *buf, int count);
  77 static int  kobil_write_room(struct tty_struct *tty);
  78 static int  kobil_ioctl(struct tty_struct *tty, struct file *file,
  79                         unsigned int cmd, unsigned long arg);
  80 static int  kobil_tiocmget(struct tty_struct *tty, struct file *file);
  81 static int  kobil_tiocmset(struct tty_struct *tty, struct file *file,
  82                            unsigned int set, unsigned int clear);
  83 static void kobil_read_int_callback(struct urb *urb);
  84 static void kobil_write_callback(struct urb *purb);
  85 static void kobil_set_termios(struct tty_struct *tty,
  86                         struct usb_serial_port *port, struct ktermios *old);
  87 static void kobil_init_termios(struct tty_struct *tty);
  88
  89 static struct usb_device_id id_table [] = {
  90         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  91         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  92         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  93         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  94         { }                     /* Terminating entry */
  95 };
  96
  97
  98 MODULE_DEVICE_TABLE(usb, id_table);
  99
 100 static struct usb_driver kobil_driver = {
 101         .name =         "kobil",
 102         .probe =        usb_serial_probe,
 103         .disconnect =   usb_serial_disconnect,
 104         .id_table =     id_table,
 105         .no_dynamic_id =        1,
 106 };
 107
 108
 109 static struct usb_serial_driver kobil_device = {
 110         .driver = {
 111                 .owner =        THIS_MODULE,
 112                 .name =         "kobil",
 113         },
 114         .description =          "KOBIL USB smart card terminal",
 115         .usb_driver =           &kobil_driver,
 116         .id_table =             id_table,
 117         .num_ports =            1,
 118         .attach =               kobil_startup,
 119         .release =              kobil_release,
 120         .ioctl =                kobil_ioctl,
 121         .set_termios =          kobil_set_termios,
 122         .init_termios =         kobil_init_termios,
 123         .tiocmget =             kobil_tiocmget,
 124         .tiocmset =             kobil_tiocmset,
 125         .open =                 kobil_open,
 126         .close =                kobil_close,
 127         .write =                kobil_write,
 128         .write_room =           kobil_write_room,
 129         .read_int_callback =    kobil_read_int_callback,
 130 };
 131
 132
 133 struct kobil_private {
 134         int write_int_endpoint_address;
 135         int read_int_endpoint_address;
 136         unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
 137         int filled;  /* index of the last char in buf */
 138         int cur_pos; /* index of the next char to send in buf */
 139         __u16 device_type;
 140 };
 141
 142
 143 static int kobil_startup(struct usb_serial *serial)
 144 {
 145         int i;
 146         struct kobil_private *priv;
 147         struct usb_device *pdev;
 148         struct usb_host_config *actconfig;
 149         struct usb_interface *interface;
 150         struct usb_host_interface *altsetting;
 151         struct usb_host_endpoint *endpoint;
 152
 153         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 static void kobil_init_termios(struct tty_struct *tty)
 214 {
 215         /* Default to echo off and other sane device settings */
 216         tty->termios->c_lflag = 0;
 217         tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 218         tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 219         /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 220         tty->termios->c_oflag &= ~ONLCR;
 221 }
 222
 223 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
 224 {
 225         int result = 0;
 226         struct kobil_private *priv;
 227         unsigned char *transfer_buffer;
 228         int transfer_buffer_length = 8;
 229         int write_urb_transfer_buffer_length = 8;
 230
 231         dbg("%s - port %d", __func__, port->number);
 232         priv = usb_get_serial_port_data(port);
 233
 234         /* someone sets the dev to 0 if the close method has been called */
 235         port->interrupt_in_urb->dev = port->serial->dev;
 236
 237         /* allocate memory for transfer buffer */
 238         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 239         if (!transfer_buffer)
 240                 return -ENOMEM;
 241
 242         /* allocate write_urb */
 243         if (!port->write_urb) {
 244                 dbg("%s - port %d  Allocating port->write_urb",
 245                                                 __func__, port->number);
 246                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 247                 if (!port->write_urb) {
 248                         dbg("%s - port %d usb_alloc_urb failed",
 249                                                 __func__, port->number);
 250                         kfree(transfer_buffer);
 251                         return -ENOMEM;
 252                 }
 253         }
 254
 255         /* allocate memory for write_urb transfer buffer */
 256         port->write_urb->transfer_buffer =
 257                         kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 258         if (!port->write_urb->transfer_buffer) {
 259                 kfree(transfer_buffer);
 260                 usb_free_urb(port->write_urb);
 261                 port->write_urb = NULL;
 262                 return -ENOMEM;
 263         }
 264
 265         /* get hardware version */
 266         result = usb_control_msg(port->serial->dev,
 267                           usb_rcvctrlpipe(port->serial->dev, 0),
 268                           SUSBCRequest_GetMisc,
 269                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 270                           SUSBCR_MSC_GetHWVersion,
 271                           0,
 272                           transfer_buffer,
 273                           transfer_buffer_length,
 274                           KOBIL_TIMEOUT
 275         );
 276         dbg("%s - port %d Send get_HW_version URB returns: %i",
 277                 __func__, port->number, result);
 278         dbg("Harware version: %i.%i.%i",
 279                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 280
 281         /* get firmware version */
 282         result = usb_control_msg(port->serial->dev,
 283                           usb_rcvctrlpipe(port->serial->dev, 0),
 284                           SUSBCRequest_GetMisc,
 285                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 286                           SUSBCR_MSC_GetFWVersion,
 287                           0,
 288                           transfer_buffer,
 289                           transfer_buffer_length,
 290                           KOBIL_TIMEOUT
 291         );
 292         dbg("%s - port %d Send get_FW_version URB returns: %i",
 293                                         __func__, port->number, result);
 294         dbg("Firmware version: %i.%i.%i",
 295                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 296
 297         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 298                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 299                 /* Setting Baudrate, Parity and Stopbits */
 300                 result = usb_control_msg(port->serial->dev,
 301                           usb_rcvctrlpipe(port->serial->dev, 0),
 302                           SUSBCRequest_SetBaudRateParityAndStopBits,
 303                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 304                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 305                                                         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",
 312                                         __func__, port->number, result);
 313
 314                 /* reset all queues */
 315                 result = usb_control_msg(port->serial->dev,
 316                           usb_rcvctrlpipe(port->serial->dev, 0),
 317                           SUSBCRequest_Misc,
 318                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 319                           SUSBCR_MSC_ResetAllQueues,
 320                           0,
 321                           transfer_buffer,
 322                           0,
 323                           KOBIL_TIMEOUT
 324                 );
 325                 dbg("%s - port %d Send reset_all_queues URB returns: %i",
 326                                         __func__, port->number, result);
 327         }
 328         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 329             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 330             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 331                 /* start reading (Adapter B 'cause PNP string) */
 332                 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 333                 dbg("%s - port %d Send read URB returns: %i",
 334                                         __func__, port->number, result);
 335         }
 336
 337         kfree(transfer_buffer);
 338         return 0;
 339 }
 340
 341
 342 static void kobil_close(struct usb_serial_port *port)
 343 {
 344         dbg("%s - port %d", __func__, port->number);
 345
 346         /* FIXME: Add rts/dtr methods */
 347         if (port->write_urb) {
 348                 usb_kill_urb(port->write_urb);
 349                 usb_free_urb(port->write_urb);
 350                 port->write_urb = NULL;
 351         }
 352         usb_kill_urb(port->interrupt_in_urb);
 353 }
 354
 355
 356 static void kobil_read_int_callback(struct urb *urb)
 357 {
 358         int result;
 359         struct usb_serial_port *port = urb->context;
 360         struct tty_struct *tty;
 361         unsigned char *data = urb->transfer_buffer;
 362         int status = urb->status;
 363 /*      char *dbg_data; */
 364
 365         dbg("%s - port %d", __func__, port->number);
 366
 367         if (status) {
 368                 dbg("%s - port %d Read int status not zero: %d",
 369                     __func__, port->number, status);
 370                 return;
 371         }
 372
 373         tty = tty_port_tty_get(&port->port);
 374         if (urb->actual_length) {
 375
 376                 /* BEGIN DEBUG */
 377                 /*
 378                   dbg_data = kzalloc((3 *  purb->actual_length + 10)
 379                                                 * sizeof(char), GFP_KERNEL);
 380                   if (! dbg_data) {
 381                           return;
 382                   }
 383                   for (i = 0; i < purb->actual_length; i++) {
 384                           sprintf(dbg_data +3*i, "%02X ", data[i]);
 385                   }
 386                   dbg(" <-- %s", dbg_data);
 387                   kfree(dbg_data);
 388                 */
 389                 /* END DEBUG */
 390
 391                 tty_buffer_request_room(tty, urb->actual_length);
 392                 tty_insert_flip_string(tty, data, urb->actual_length);
 393                 tty_flip_buffer_push(tty);
 394         }
 395         tty_kref_put(tty);
 396         /* someone sets the dev to 0 if the close method has been called */
 397         port->interrupt_in_urb->dev = port->serial->dev;
 398
 399         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 400         dbg("%s - port %d Send read URB returns: %i",
 401                         __func__, port->number, result);
 402 }
 403
 404
 405 static void kobil_write_callback(struct urb *purb)
 406 {
 407 }
 408
 409
 410 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 411                         const unsigned char *buf, int count)
 412 {
 413         int length = 0;
 414         int result = 0;
 415         int todo = 0;
 416         struct kobil_private *priv;
 417
 418         if (count == 0) {
 419                 dbg("%s - port %d write request of 0 bytes",
 420                                                 __func__, port->number);
 421                 return 0;
 422         }
 423
 424         priv = usb_get_serial_port_data(port);
 425
 426         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 427                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 428                 return -ENOMEM;
 429         }
 430
 431         /* Copy data to buffer */
 432         memcpy(priv->buf + priv->filled, buf, count);
 433         usb_serial_debug_data(debug, &port->dev, __func__, count,
 434                                                 priv->buf + priv->filled);
 435         priv->filled = priv->filled + count;
 436
 437         /* only send complete block. TWIN, KAAN SIM and adapter K
 438            use the same protocol. */
 439         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 440              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 441                 /* stop reading (except TWIN and KAAN SIM) */
 442                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 443                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 444                         usb_kill_urb(port->interrupt_in_urb);
 445
 446                 todo = priv->filled - priv->cur_pos;
 447
 448                 while (todo > 0) {
 449                         /* max 8 byte in one urb (endpoint size) */
 450                         length = (todo < 8) ? todo : 8;
 451                         /* copy data to transfer buffer */
 452                         memcpy(port->write_urb->transfer_buffer,
 453                                         priv->buf + priv->cur_pos, length);
 454                         usb_fill_int_urb(port->write_urb,
 455                                   port->serial->dev,
 456                                   usb_sndintpipe(port->serial->dev,
 457                                         priv->write_int_endpoint_address),
 458                                   port->write_urb->transfer_buffer,
 459                                   length,
 460                                   kobil_write_callback,
 461                                   port,
 462                                   8
 463                         );
 464
 465                         priv->cur_pos = priv->cur_pos + length;
 466                         result = usb_submit_urb(port->write_urb, GFP_NOIO);
 467                         dbg("%s - port %d Send write URB returns: %i",
 468                                         __func__, port->number, result);
 469                         todo = priv->filled - priv->cur_pos;
 470
 471                         if (todo > 0)
 472                                 msleep(24);
 473                 }
 474
 475                 priv->filled = 0;
 476                 priv->cur_pos = 0;
 477
 478                 /* someone sets the dev to 0 if the close method
 479                    has been called */
 480                 port->interrupt_in_urb->dev = port->serial->dev;
 481
 482                 /* start reading (except TWIN and KAAN SIM) */
 483                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 484                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 485                         /* someone sets the dev to 0 if the close method has
 486                            been called */
 487                         port->interrupt_in_urb->dev = port->serial->dev;
 488
 489                         result = usb_submit_urb(port->interrupt_in_urb,
 490                                                                 GFP_NOIO);
 491                         dbg("%s - port %d Send read URB returns: %i",
 492                                         __func__, port->number, result);
 493                 }
 494         }
 495         return count;
 496 }
 497
 498
 499 static int kobil_write_room(struct tty_struct *tty)
 500 {
 501         /* dbg("%s - port %d", __func__, port->number); */
 502         /* FIXME */
 503         return 8;
 504 }
 505
 506
 507 static int kobil_tiocmget(struct tty_struct *tty, struct file *file)
 508 {
 509         struct usb_serial_port *port = tty->driver_data;
 510         struct kobil_private *priv;
 511         int result;
 512         unsigned char *transfer_buffer;
 513         int transfer_buffer_length = 8;
 514
 515         priv = usb_get_serial_port_data(port);
 516         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 517                         || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 518                 /* This device doesn't support ioctl calls */
 519                 return -EINVAL;
 520         }
 521
 522         /* allocate memory for transfer buffer */
 523         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 524         if (!transfer_buffer)
 525                 return -ENOMEM;
 526
 527         result = usb_control_msg(port->serial->dev,
 528                           usb_rcvctrlpipe(port->serial->dev, 0),
 529                           SUSBCRequest_GetStatusLineState,
 530                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 531                           0,
 532                           0,
 533                           transfer_buffer,
 534                           transfer_buffer_length,
 535                           KOBIL_TIMEOUT);
 536
 537         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 538             __func__, port->number, result, transfer_buffer[0]);
 539
 540         result = 0;
 541         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 542                 result = TIOCM_DSR;
 543         kfree(transfer_buffer);
 544         return result;
 545 }
 546
 547 static int kobil_tiocmset(struct tty_struct *tty, struct file *file,
 548                            unsigned int set, unsigned int clear)
 549 {
 550         struct usb_serial_port *port = tty->driver_data;
 551         struct kobil_private *priv;
 552         int result;
 553         int dtr = 0;
 554         int rts = 0;
 555         unsigned char *transfer_buffer;
 556         int transfer_buffer_length = 8;
 557
 558         /* FIXME: locking ? */
 559         priv = usb_get_serial_port_data(port);
 560         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 561                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 562                 /* This device doesn't support ioctl calls */
 563                 return -EINVAL;
 564         }
 565
 566         /* allocate memory for transfer buffer */
 567         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 568         if (!transfer_buffer)
 569                 return -ENOMEM;
 570
 571         if (set & TIOCM_RTS)
 572                 rts = 1;
 573         if (set & TIOCM_DTR)
 574                 dtr = 1;
 575         if (clear & TIOCM_RTS)
 576                 rts = 0;
 577         if (clear & TIOCM_DTR)
 578                 dtr = 0;
 579
 580         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 581                 if (dtr != 0)
 582                         dbg("%s - port %d Setting DTR",
 583                                                 __func__, port->number);
 584                 else
 585                         dbg("%s - port %d Clearing DTR",
 586                                                 __func__, port->number);
 587                 result = usb_control_msg(port->serial->dev,
 588                           usb_rcvctrlpipe(port->serial->dev, 0),
 589                           SUSBCRequest_SetStatusLinesOrQueues,
 590                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 591                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 592                           0,
 593                           transfer_buffer,
 594                           0,
 595                           KOBIL_TIMEOUT);
 596         } else {
 597                 if (rts != 0)
 598                         dbg("%s - port %d Setting RTS",
 599                                                 __func__, port->number);
 600                 else
 601                         dbg("%s - port %d Clearing RTS",
 602                                                 __func__, port->number);
 603                 result = usb_control_msg(port->serial->dev,
 604                         usb_rcvctrlpipe(port->serial->dev, 0),
 605                         SUSBCRequest_SetStatusLinesOrQueues,
 606                         USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 607                         ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 608                         0,
 609                         transfer_buffer,
 610                         0,
 611                         KOBIL_TIMEOUT);
 612         }
 613         dbg("%s - port %d Send set_status_line URB returns: %i",
 614                                         __func__, port->number, result);
 615         kfree(transfer_buffer);
 616         return (result < 0) ? result : 0;
 617 }
 618
 619 static void kobil_set_termios(struct tty_struct *tty,
 620                         struct usb_serial_port *port, struct ktermios *old)
 621 {
 622         struct kobil_private *priv;
 623         int result;
 624         unsigned short urb_val = 0;
 625         int c_cflag = tty->termios->c_cflag;
 626         speed_t speed;
 627         void *settings;
 628
 629         priv = usb_get_serial_port_data(port);
 630         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 631                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 632                 /* This device doesn't support ioctl calls */
 633                 *tty->termios = *old;
 634                 return;
 635         }
 636
 637         speed = tty_get_baud_rate(tty);
 638         switch (speed) {
 639         case 1200:
 640                 urb_val = SUSBCR_SBR_1200;
 641                 break;
 642         default:
 643                 speed = 9600;
 644         case 9600:
 645                 urb_val = SUSBCR_SBR_9600;
 646                 break;
 647         }
 648         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 649                                                         SUSBCR_SPASB_1StopBit;
 650
 651         settings = kzalloc(50, GFP_KERNEL);
 652         if (!settings)
 653                 return;
 654
 655         sprintf(settings, "%d ", speed);
 656
 657         if (c_cflag & PARENB) {
 658                 if  (c_cflag & PARODD) {
 659                         urb_val |= SUSBCR_SPASB_OddParity;
 660                         strcat(settings, "Odd Parity");
 661                 } else {
 662                         urb_val |= SUSBCR_SPASB_EvenParity;
 663                         strcat(settings, "Even Parity");
 664                 }
 665         } else {
 666                 urb_val |= SUSBCR_SPASB_NoParity;
 667                 strcat(settings, "No Parity");
 668         }
 669         tty->termios->c_cflag &= ~CMSPAR;
 670         tty_encode_baud_rate(tty, speed, speed);
 671
 672         result = usb_control_msg(port->serial->dev,
 673                   usb_rcvctrlpipe(port->serial->dev, 0),
 674                   SUSBCRequest_SetBaudRateParityAndStopBits,
 675                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 676                   urb_val,
 677                   0,
 678                   settings,
 679                   0,
 680                   KOBIL_TIMEOUT
 681                 );
 682         kfree(settings);
 683 }
 684
 685 static int kobil_ioctl(struct tty_struct *tty, struct file *file,
 686                                         unsigned int cmd, unsigned long arg)
 687 {
 688         struct usb_serial_port *port = tty->driver_data;
 689         struct kobil_private *priv = usb_get_serial_port_data(port);
 690         unsigned char *transfer_buffer;
 691         int transfer_buffer_length = 8;
 692         int result;
 693
 694         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 695                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 696                 /* This device doesn't support ioctl calls */
 697                 return -ENOIOCTLCMD;
 698
 699         switch (cmd) {
 700         case TCFLSH:
 701                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 702                 if (!transfer_buffer)
 703                         return -ENOBUFS;
 704
 705                 result = usb_control_msg(port->serial->dev,
 706                           usb_rcvctrlpipe(port->serial->dev, 0),
 707                           SUSBCRequest_Misc,
 708                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 709                           SUSBCR_MSC_ResetAllQueues,
 710                           0,
 711                           NULL, /* transfer_buffer, */
 712                           0,
 713                           KOBIL_TIMEOUT
 714                         );
 715
 716                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 717                 kfree(transfer_buffer);
 718                 return (result < 0) ? -EIO: 0;
 719         default:
 720                 return -ENOIOCTLCMD;
 721         }
 722 }
 723
 724 static int __init kobil_init(void)
 725 {
 726         int retval;
 727         retval = usb_serial_register(&kobil_device);
 728         if (retval)
 729                 goto failed_usb_serial_register;
 730         retval = usb_register(&kobil_driver);
 731         if (retval)
 732                 goto failed_usb_register;
 733
 734         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 735                DRIVER_DESC "\n");
 736
 737         return 0;
 738 failed_usb_register:
 739         usb_serial_deregister(&kobil_device);
 740 failed_usb_serial_register:
 741         return retval;
 742 }
 743
 744
 745 static void __exit kobil_exit(void)
 746 {
 747         usb_deregister(&kobil_driver);
 748         usb_serial_deregister(&kobil_device);
 749 }
 750
 751 module_init(kobil_init);
 752 module_exit(kobil_exit);
 753
 754 MODULE_AUTHOR(DRIVER_AUTHOR);
 755 MODULE_DESCRIPTION(DRIVER_DESC);
 756 MODULE_LICENSE("GPL");
 757
 758 module_param(debug, bool, S_IRUGO | S_IWUSR);
 759 MODULE_PARM_DESC(debug, "Debug enabled or not");