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
  25
  26 #include <linux/kernel.h>
  27 #include <linux/errno.h>
  28 #include <linux/init.h>
  29 #include <linux/slab.h>
  30 #include <linux/tty.h>
  31 #include <linux/tty_driver.h>
  32 #include <linux/tty_flip.h>
  33 #include <linux/module.h>
  34 #include <linux/spinlock.h>
  35 #include <linux/uaccess.h>
  36 #include <linux/usb.h>
  37 #include <linux/usb/serial.h>
  38 #include <linux/ioctl.h>
  39 #include "kobil_sct.h"
  40
  41 static bool debug;
  42
  43 /* Version Information */
  44 #define DRIVER_VERSION "21/05/2004"
  45 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  46 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  47
  48 #define KOBIL_VENDOR_ID                 0x0D46
  49 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  50 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  51 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  52 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  53
  54 #define KOBIL_TIMEOUT           500
  55 #define KOBIL_BUF_LENGTH        300
  56
  57
  58 /* Function prototypes */
  59 static int  kobil_startup(struct usb_serial *serial);
  60 static void kobil_release(struct usb_serial *serial);
  61 static int  kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
  62 static void kobil_close(struct usb_serial_port *port);
  63 static int  kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
  64                          const unsigned char *buf, int count);
  65 static int  kobil_write_room(struct tty_struct *tty);
  66 static int  kobil_ioctl(struct tty_struct *tty,
  67                         unsigned int cmd, unsigned long arg);
  68 static int  kobil_tiocmget(struct tty_struct *tty);
  69 static int  kobil_tiocmset(struct tty_struct *tty,
  70                            unsigned int set, unsigned int clear);
  71 static void kobil_read_int_callback(struct urb *urb);
  72 static void kobil_write_callback(struct urb *purb);
  73 static void kobil_set_termios(struct tty_struct *tty,
  74                         struct usb_serial_port *port, struct ktermios *old);
  75 static void kobil_init_termios(struct tty_struct *tty);
  76
  77 static const struct usb_device_id id_table[] = {
  78         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  79         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  80         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  81         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  82         { }                     /* Terminating entry */
  83 };
  84
  85
  86 MODULE_DEVICE_TABLE(usb, id_table);
  87
  88 static struct usb_driver kobil_driver = {
  89         .name =         "kobil",
  90         .disconnect =   usb_serial_disconnect,
  91         .id_table =     id_table,
  92 };
  93
  94
  95 static struct usb_serial_driver kobil_device = {
  96         .driver = {
  97                 .owner =        THIS_MODULE,
  98                 .name =         "kobil",
  99         },
 100         .description =          "KOBIL USB smart card terminal",
 101         .id_table =             id_table,
 102         .num_ports =            1,
 103         .attach =               kobil_startup,
 104         .release =              kobil_release,
 105         .ioctl =                kobil_ioctl,
 106         .set_termios =          kobil_set_termios,
 107         .init_termios =         kobil_init_termios,
 108         .tiocmget =             kobil_tiocmget,
 109         .tiocmset =             kobil_tiocmset,
 110         .open =                 kobil_open,
 111         .close =                kobil_close,
 112         .write =                kobil_write,
 113         .write_room =           kobil_write_room,
 114         .read_int_callback =    kobil_read_int_callback,
 115 };
 116
 117 static struct usb_serial_driver * const serial_drivers[] = {
 118         &kobil_device, NULL
 119 };
 120
 121 struct kobil_private {
 122         int write_int_endpoint_address;
 123         int read_int_endpoint_address;
 124         unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
 125         int filled;  /* index of the last char in buf */
 126         int cur_pos; /* index of the next char to send in buf */
 127         __u16 device_type;
 128 };
 129
 130
 131 static int kobil_startup(struct usb_serial *serial)
 132 {
 133         int i;
 134         struct kobil_private *priv;
 135         struct usb_device *pdev;
 136         struct usb_host_config *actconfig;
 137         struct usb_interface *interface;
 138         struct usb_host_interface *altsetting;
 139         struct usb_host_endpoint *endpoint;
 140
 141         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 142         if (!priv)
 143                 return -ENOMEM;
 144
 145         priv->filled = 0;
 146         priv->cur_pos = 0;
 147         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 148
 149         switch (priv->device_type) {
 150         case KOBIL_ADAPTER_B_PRODUCT_ID:
 151                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 152                 break;
 153         case KOBIL_ADAPTER_K_PRODUCT_ID:
 154                 printk(KERN_DEBUG
 155                   "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 156                 break;
 157         case KOBIL_USBTWIN_PRODUCT_ID:
 158                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 159                 break;
 160         case KOBIL_KAAN_SIM_PRODUCT_ID:
 161                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 162                 break;
 163         }
 164         usb_set_serial_port_data(serial->port[0], priv);
 165
 166         /* search for the necessary endpoints */
 167         pdev = serial->dev;
 168         actconfig = pdev->actconfig;
 169         interface = actconfig->interface[0];
 170         altsetting = interface->cur_altsetting;
 171         endpoint = altsetting->endpoint;
 172
 173         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 174                 endpoint = &altsetting->endpoint[i];
 175                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 176                         dbg("%s Found interrupt out endpoint. Address: %d",
 177                                 __func__, endpoint->desc.bEndpointAddress);
 178                         priv->write_int_endpoint_address =
 179                                 endpoint->desc.bEndpointAddress;
 180                 }
 181                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 182                         dbg("%s Found interrupt in  endpoint. Address: %d",
 183                                 __func__, endpoint->desc.bEndpointAddress);
 184                         priv->read_int_endpoint_address =
 185                                 endpoint->desc.bEndpointAddress;
 186                 }
 187         }
 188         return 0;
 189 }
 190
 191
 192 static void kobil_release(struct usb_serial *serial)
 193 {
 194         int i;
 195
 196         for (i = 0; i < serial->num_ports; ++i)
 197                 kfree(usb_get_serial_port_data(serial->port[i]));
 198 }
 199
 200 static void kobil_init_termios(struct tty_struct *tty)
 201 {
 202         /* Default to echo off and other sane device settings */
 203         tty->termios->c_lflag = 0;
 204         tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 205         tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 206         /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 207         tty->termios->c_oflag &= ~ONLCR;
 208 }
 209
 210 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
 211 {
 212         int result = 0;
 213         struct kobil_private *priv;
 214         unsigned char *transfer_buffer;
 215         int transfer_buffer_length = 8;
 216         int write_urb_transfer_buffer_length = 8;
 217
 218         priv = usb_get_serial_port_data(port);
 219
 220         /* allocate memory for transfer buffer */
 221         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 222         if (!transfer_buffer)
 223                 return -ENOMEM;
 224
 225         /* allocate write_urb */
 226         if (!port->write_urb) {
 227                 dbg("%s - port %d  Allocating port->write_urb",
 228                                                 __func__, port->number);
 229                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 230                 if (!port->write_urb) {
 231                         dbg("%s - port %d usb_alloc_urb failed",
 232                                                 __func__, port->number);
 233                         kfree(transfer_buffer);
 234                         return -ENOMEM;
 235                 }
 236         }
 237
 238         /* allocate memory for write_urb transfer buffer */
 239         port->write_urb->transfer_buffer =
 240                         kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 241         if (!port->write_urb->transfer_buffer) {
 242                 kfree(transfer_buffer);
 243                 usb_free_urb(port->write_urb);
 244                 port->write_urb = NULL;
 245                 return -ENOMEM;
 246         }
 247
 248         /* get hardware version */
 249         result = usb_control_msg(port->serial->dev,
 250                           usb_rcvctrlpipe(port->serial->dev, 0),
 251                           SUSBCRequest_GetMisc,
 252                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 253                           SUSBCR_MSC_GetHWVersion,
 254                           0,
 255                           transfer_buffer,
 256                           transfer_buffer_length,
 257                           KOBIL_TIMEOUT
 258         );
 259         dbg("%s - port %d Send get_HW_version URB returns: %i",
 260                 __func__, port->number, result);
 261         dbg("Harware version: %i.%i.%i",
 262                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 263
 264         /* get firmware version */
 265         result = usb_control_msg(port->serial->dev,
 266                           usb_rcvctrlpipe(port->serial->dev, 0),
 267                           SUSBCRequest_GetMisc,
 268                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 269                           SUSBCR_MSC_GetFWVersion,
 270                           0,
 271                           transfer_buffer,
 272                           transfer_buffer_length,
 273                           KOBIL_TIMEOUT
 274         );
 275         dbg("%s - port %d Send get_FW_version URB returns: %i",
 276                                         __func__, port->number, result);
 277         dbg("Firmware version: %i.%i.%i",
 278                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 279
 280         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 281                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 282                 /* Setting Baudrate, Parity and Stopbits */
 283                 result = usb_control_msg(port->serial->dev,
 284                           usb_rcvctrlpipe(port->serial->dev, 0),
 285                           SUSBCRequest_SetBaudRateParityAndStopBits,
 286                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 287                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 288                                                         SUSBCR_SPASB_1StopBit,
 289                           0,
 290                           transfer_buffer,
 291                           0,
 292                           KOBIL_TIMEOUT
 293                 );
 294                 dbg("%s - port %d Send set_baudrate URB returns: %i",
 295                                         __func__, port->number, result);
 296
 297                 /* reset all queues */
 298                 result = usb_control_msg(port->serial->dev,
 299                           usb_rcvctrlpipe(port->serial->dev, 0),
 300                           SUSBCRequest_Misc,
 301                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 302                           SUSBCR_MSC_ResetAllQueues,
 303                           0,
 304                           transfer_buffer,
 305                           0,
 306                           KOBIL_TIMEOUT
 307                 );
 308                 dbg("%s - port %d Send reset_all_queues URB returns: %i",
 309                                         __func__, port->number, result);
 310         }
 311         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 312             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 313             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 314                 /* start reading (Adapter B 'cause PNP string) */
 315                 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 316                 dbg("%s - port %d Send read URB returns: %i",
 317                                         __func__, port->number, result);
 318         }
 319
 320         kfree(transfer_buffer);
 321         return 0;
 322 }
 323
 324
 325 static void kobil_close(struct usb_serial_port *port)
 326 {
 327         /* FIXME: Add rts/dtr methods */
 328         if (port->write_urb) {
 329                 usb_poison_urb(port->write_urb);
 330                 kfree(port->write_urb->transfer_buffer);
 331                 usb_free_urb(port->write_urb);
 332                 port->write_urb = NULL;
 333         }
 334         usb_kill_urb(port->interrupt_in_urb);
 335 }
 336
 337
 338 static void kobil_read_int_callback(struct urb *urb)
 339 {
 340         int result;
 341         struct usb_serial_port *port = urb->context;
 342         struct tty_struct *tty;
 343         unsigned char *data = urb->transfer_buffer;
 344         int status = urb->status;
 345 /*      char *dbg_data; */
 346
 347         if (status) {
 348                 dbg("%s - port %d Read int status not zero: %d",
 349                     __func__, port->number, status);
 350                 return;
 351         }
 352
 353         tty = tty_port_tty_get(&port->port);
 354         if (tty && urb->actual_length) {
 355
 356                 /* BEGIN DEBUG */
 357                 /*
 358                   dbg_data = kzalloc((3 *  purb->actual_length + 10)
 359                                                 * sizeof(char), GFP_KERNEL);
 360                   if (! dbg_data) {
 361                           return;
 362                   }
 363                   for (i = 0; i < purb->actual_length; i++) {
 364                           sprintf(dbg_data +3*i, "%02X ", data[i]);
 365                   }
 366                   dbg(" <-- %s", dbg_data);
 367                   kfree(dbg_data);
 368                 */
 369                 /* END DEBUG */
 370
 371                 tty_insert_flip_string(tty, data, urb->actual_length);
 372                 tty_flip_buffer_push(tty);
 373         }
 374         tty_kref_put(tty);
 375
 376         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 377         dbg("%s - port %d Send read URB returns: %i",
 378                         __func__, port->number, result);
 379 }
 380
 381
 382 static void kobil_write_callback(struct urb *purb)
 383 {
 384 }
 385
 386
 387 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 388                         const unsigned char *buf, int count)
 389 {
 390         int length = 0;
 391         int result = 0;
 392         int todo = 0;
 393         struct kobil_private *priv;
 394
 395         if (count == 0) {
 396                 dbg("%s - port %d write request of 0 bytes",
 397                                                 __func__, port->number);
 398                 return 0;
 399         }
 400
 401         priv = usb_get_serial_port_data(port);
 402
 403         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 404                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 405                 return -ENOMEM;
 406         }
 407
 408         /* Copy data to buffer */
 409         memcpy(priv->buf + priv->filled, buf, count);
 410         usb_serial_debug_data(debug, &port->dev, __func__, count,
 411                                                 priv->buf + priv->filled);
 412         priv->filled = priv->filled + count;
 413
 414         /* only send complete block. TWIN, KAAN SIM and adapter K
 415            use the same protocol. */
 416         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 417              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 418                 /* stop reading (except TWIN and KAAN SIM) */
 419                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 420                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 421                         usb_kill_urb(port->interrupt_in_urb);
 422
 423                 todo = priv->filled - priv->cur_pos;
 424
 425                 while (todo > 0) {
 426                         /* max 8 byte in one urb (endpoint size) */
 427                         length = (todo < 8) ? todo : 8;
 428                         /* copy data to transfer buffer */
 429                         memcpy(port->write_urb->transfer_buffer,
 430                                         priv->buf + priv->cur_pos, length);
 431                         usb_fill_int_urb(port->write_urb,
 432                                   port->serial->dev,
 433                                   usb_sndintpipe(port->serial->dev,
 434                                         priv->write_int_endpoint_address),
 435                                   port->write_urb->transfer_buffer,
 436                                   length,
 437                                   kobil_write_callback,
 438                                   port,
 439                                   8
 440                         );
 441
 442                         priv->cur_pos = priv->cur_pos + length;
 443                         result = usb_submit_urb(port->write_urb, GFP_NOIO);
 444                         dbg("%s - port %d Send write URB returns: %i",
 445                                         __func__, port->number, result);
 446                         todo = priv->filled - priv->cur_pos;
 447
 448                         if (todo > 0)
 449                                 msleep(24);
 450                 }
 451
 452                 priv->filled = 0;
 453                 priv->cur_pos = 0;
 454
 455                 /* start reading (except TWIN and KAAN SIM) */
 456                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 457                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 458                         result = usb_submit_urb(port->interrupt_in_urb,
 459                                                                 GFP_NOIO);
 460                         dbg("%s - port %d Send read URB returns: %i",
 461                                         __func__, port->number, result);
 462                 }
 463         }
 464         return count;
 465 }
 466
 467
 468 static int kobil_write_room(struct tty_struct *tty)
 469 {
 470         /* FIXME */
 471         return 8;
 472 }
 473
 474
 475 static int kobil_tiocmget(struct tty_struct *tty)
 476 {
 477         struct usb_serial_port *port = tty->driver_data;
 478         struct kobil_private *priv;
 479         int result;
 480         unsigned char *transfer_buffer;
 481         int transfer_buffer_length = 8;
 482
 483         priv = usb_get_serial_port_data(port);
 484         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 485                         || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 486                 /* This device doesn't support ioctl calls */
 487                 return -EINVAL;
 488         }
 489
 490         /* allocate memory for transfer buffer */
 491         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 492         if (!transfer_buffer)
 493                 return -ENOMEM;
 494
 495         result = usb_control_msg(port->serial->dev,
 496                           usb_rcvctrlpipe(port->serial->dev, 0),
 497                           SUSBCRequest_GetStatusLineState,
 498                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 499                           0,
 500                           0,
 501                           transfer_buffer,
 502                           transfer_buffer_length,
 503                           KOBIL_TIMEOUT);
 504
 505         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 506             __func__, port->number, result, transfer_buffer[0]);
 507
 508         result = 0;
 509         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 510                 result = TIOCM_DSR;
 511         kfree(transfer_buffer);
 512         return result;
 513 }
 514
 515 static int kobil_tiocmset(struct tty_struct *tty,
 516                            unsigned int set, unsigned int clear)
 517 {
 518         struct usb_serial_port *port = tty->driver_data;
 519         struct kobil_private *priv;
 520         int result;
 521         int dtr = 0;
 522         int rts = 0;
 523         unsigned char *transfer_buffer;
 524         int transfer_buffer_length = 8;
 525
 526         /* FIXME: locking ? */
 527         priv = usb_get_serial_port_data(port);
 528         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 529                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 530                 /* This device doesn't support ioctl calls */
 531                 return -EINVAL;
 532         }
 533
 534         /* allocate memory for transfer buffer */
 535         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 536         if (!transfer_buffer)
 537                 return -ENOMEM;
 538
 539         if (set & TIOCM_RTS)
 540                 rts = 1;
 541         if (set & TIOCM_DTR)
 542                 dtr = 1;
 543         if (clear & TIOCM_RTS)
 544                 rts = 0;
 545         if (clear & TIOCM_DTR)
 546                 dtr = 0;
 547
 548         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 549                 if (dtr != 0)
 550                         dbg("%s - port %d Setting DTR",
 551                                                 __func__, port->number);
 552                 else
 553                         dbg("%s - port %d Clearing DTR",
 554                                                 __func__, port->number);
 555                 result = usb_control_msg(port->serial->dev,
 556                           usb_rcvctrlpipe(port->serial->dev, 0),
 557                           SUSBCRequest_SetStatusLinesOrQueues,
 558                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 559                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 560                           0,
 561                           transfer_buffer,
 562                           0,
 563                           KOBIL_TIMEOUT);
 564         } else {
 565                 if (rts != 0)
 566                         dbg("%s - port %d Setting RTS",
 567                                                 __func__, port->number);
 568                 else
 569                         dbg("%s - port %d Clearing RTS",
 570                                                 __func__, port->number);
 571                 result = usb_control_msg(port->serial->dev,
 572                         usb_rcvctrlpipe(port->serial->dev, 0),
 573                         SUSBCRequest_SetStatusLinesOrQueues,
 574                         USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 575                         ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 576                         0,
 577                         transfer_buffer,
 578                         0,
 579                         KOBIL_TIMEOUT);
 580         }
 581         dbg("%s - port %d Send set_status_line URB returns: %i",
 582                                         __func__, port->number, result);
 583         kfree(transfer_buffer);
 584         return (result < 0) ? result : 0;
 585 }
 586
 587 static void kobil_set_termios(struct tty_struct *tty,
 588                         struct usb_serial_port *port, struct ktermios *old)
 589 {
 590         struct kobil_private *priv;
 591         int result;
 592         unsigned short urb_val = 0;
 593         int c_cflag = tty->termios->c_cflag;
 594         speed_t speed;
 595
 596         priv = usb_get_serial_port_data(port);
 597         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 598                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 599                 /* This device doesn't support ioctl calls */
 600                 *tty->termios = *old;
 601                 return;
 602         }
 603
 604         speed = tty_get_baud_rate(tty);
 605         switch (speed) {
 606         case 1200:
 607                 urb_val = SUSBCR_SBR_1200;
 608                 break;
 609         default:
 610                 speed = 9600;
 611         case 9600:
 612                 urb_val = SUSBCR_SBR_9600;
 613                 break;
 614         }
 615         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 616                                                         SUSBCR_SPASB_1StopBit;
 617         if (c_cflag & PARENB) {
 618                 if  (c_cflag & PARODD)
 619                         urb_val |= SUSBCR_SPASB_OddParity;
 620                 else
 621                         urb_val |= SUSBCR_SPASB_EvenParity;
 622         } else
 623                 urb_val |= SUSBCR_SPASB_NoParity;
 624         tty->termios->c_cflag &= ~CMSPAR;
 625         tty_encode_baud_rate(tty, speed, speed);
 626
 627         result = usb_control_msg(port->serial->dev,
 628                   usb_rcvctrlpipe(port->serial->dev, 0),
 629                   SUSBCRequest_SetBaudRateParityAndStopBits,
 630                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 631                   urb_val,
 632                   0,
 633                   NULL,
 634                   0,
 635                   KOBIL_TIMEOUT
 636                 );
 637 }
 638
 639 static int kobil_ioctl(struct tty_struct *tty,
 640                                         unsigned int cmd, unsigned long arg)
 641 {
 642         struct usb_serial_port *port = tty->driver_data;
 643         struct kobil_private *priv = usb_get_serial_port_data(port);
 644         unsigned char *transfer_buffer;
 645         int transfer_buffer_length = 8;
 646         int result;
 647
 648         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 649                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 650                 /* This device doesn't support ioctl calls */
 651                 return -ENOIOCTLCMD;
 652
 653         switch (cmd) {
 654         case TCFLSH:
 655                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 656                 if (!transfer_buffer)
 657                         return -ENOBUFS;
 658
 659                 result = usb_control_msg(port->serial->dev,
 660                           usb_rcvctrlpipe(port->serial->dev, 0),
 661                           SUSBCRequest_Misc,
 662                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 663                           SUSBCR_MSC_ResetAllQueues,
 664                           0,
 665                           NULL, /* transfer_buffer, */
 666                           0,
 667                           KOBIL_TIMEOUT
 668                         );
 669
 670                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 671                 kfree(transfer_buffer);
 672                 return (result < 0) ? -EIO: 0;
 673         default:
 674                 return -ENOIOCTLCMD;
 675         }
 676 }
 677
 678 module_usb_serial_driver(kobil_driver, serial_drivers);
 679
 680 MODULE_AUTHOR(DRIVER_AUTHOR);
 681 MODULE_DESCRIPTION(DRIVER_DESC);
 682 MODULE_LICENSE("GPL");
 683
 684 module_param(debug, bool, S_IRUGO | S_IWUSR);
 685 MODULE_PARM_DESC(debug, "Debug enabled or not");