drivers/usb/serial/kobil_sct.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *  KOBIL USB Smart Card Terminal Driver
   4  *
   5  *  Copyright (C) 2002  KOBIL Systems GmbH
   6  *  Author: Thomas Wahrenbruch
   7  *
   8  *  Contact: linuxusb@kobil.de
   9  *
  10  *  This program is largely derived from work by the linux-usb group
  11  *  and associated source files.  Please see the usb/serial files for
  12  *  individual credits and copyrights.
  13  *
  14  *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
  15  *  patience.
  16  *
  17  * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
  18  * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
  19  */
  20
  21
  22 #include <linux/kernel.h>
  23 #include <linux/errno.h>
  24 #include <linux/slab.h>
  25 #include <linux/tty.h>
  26 #include <linux/tty_driver.h>
  27 #include <linux/tty_flip.h>
  28 #include <linux/module.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/uaccess.h>
  31 #include <linux/usb.h>
  32 #include <linux/usb/serial.h>
  33 #include <linux/ioctl.h>
  34 #include "kobil_sct.h"
  35
  36 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  37 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  38
  39 #define KOBIL_VENDOR_ID                 0x0D46
  40 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  41 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  42 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  43 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  44
  45 #define KOBIL_TIMEOUT           500
  46 #define KOBIL_BUF_LENGTH        300
  47
  48
  49 /* Function prototypes */
  50 static int kobil_port_probe(struct usb_serial_port *probe);
  51 static int kobil_port_remove(struct usb_serial_port *probe);
  52 static int  kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
  53 static void kobil_close(struct usb_serial_port *port);
  54 static int  kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
  55                          const unsigned char *buf, int count);
  56 static int  kobil_write_room(struct tty_struct *tty);
  57 static int  kobil_ioctl(struct tty_struct *tty,
  58                         unsigned int cmd, unsigned long arg);
  59 static int  kobil_tiocmget(struct tty_struct *tty);
  60 static int  kobil_tiocmset(struct tty_struct *tty,
  61                            unsigned int set, unsigned int clear);
  62 static void kobil_read_int_callback(struct urb *urb);
  63 static void kobil_write_int_callback(struct urb *urb);
  64 static void kobil_set_termios(struct tty_struct *tty,
  65                         struct usb_serial_port *port, struct ktermios *old);
  66 static void kobil_init_termios(struct tty_struct *tty);
  67
  68 static const struct usb_device_id id_table[] = {
  69         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  70         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  71         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  72         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  73         { }                     /* Terminating entry */
  74 };
  75 MODULE_DEVICE_TABLE(usb, id_table);
  76
  77 static struct usb_serial_driver kobil_device = {
  78         .driver = {
  79                 .owner =        THIS_MODULE,
  80                 .name =         "kobil",
  81         },
  82         .description =          "KOBIL USB smart card terminal",
  83         .id_table =             id_table,
  84         .num_ports =            1,
  85         .num_interrupt_out =    1,
  86         .port_probe =           kobil_port_probe,
  87         .port_remove =          kobil_port_remove,
  88         .ioctl =                kobil_ioctl,
  89         .set_termios =          kobil_set_termios,
  90         .init_termios =         kobil_init_termios,
  91         .tiocmget =             kobil_tiocmget,
  92         .tiocmset =             kobil_tiocmset,
  93         .open =                 kobil_open,
  94         .close =                kobil_close,
  95         .write =                kobil_write,
  96         .write_room =           kobil_write_room,
  97         .read_int_callback =    kobil_read_int_callback,
  98         .write_int_callback =   kobil_write_int_callback,
  99 };
 100
 101 static struct usb_serial_driver * const serial_drivers[] = {
 102         &kobil_device, NULL
 103 };
 104
 105 struct kobil_private {
 106         unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
 107         int filled;  /* index of the last char in buf */
 108         int cur_pos; /* index of the next char to send in buf */
 109         __u16 device_type;
 110 };
 111
 112
 113 static int kobil_port_probe(struct usb_serial_port *port)
 114 {
 115         struct usb_serial *serial = port->serial;
 116         struct kobil_private *priv;
 117
 118         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 119         if (!priv)
 120                 return -ENOMEM;
 121
 122         priv->filled = 0;
 123         priv->cur_pos = 0;
 124         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 125
 126         switch (priv->device_type) {
 127         case KOBIL_ADAPTER_B_PRODUCT_ID:
 128                 dev_dbg(&serial->dev->dev, "KOBIL B1 PRO / KAAN PRO detected\n");
 129                 break;
 130         case KOBIL_ADAPTER_K_PRODUCT_ID:
 131                 dev_dbg(&serial->dev->dev, "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 132                 break;
 133         case KOBIL_USBTWIN_PRODUCT_ID:
 134                 dev_dbg(&serial->dev->dev, "KOBIL USBTWIN detected\n");
 135                 break;
 136         case KOBIL_KAAN_SIM_PRODUCT_ID:
 137                 dev_dbg(&serial->dev->dev, "KOBIL KAAN SIM detected\n");
 138                 break;
 139         }
 140         usb_set_serial_port_data(port, priv);
 141
 142         return 0;
 143 }
 144
 145
 146 static int kobil_port_remove(struct usb_serial_port *port)
 147 {
 148         struct kobil_private *priv;
 149
 150         priv = usb_get_serial_port_data(port);
 151         kfree(priv);
 152
 153         return 0;
 154 }
 155
 156 static void kobil_init_termios(struct tty_struct *tty)
 157 {
 158         /* Default to echo off and other sane device settings */
 159         tty->termios.c_lflag = 0;
 160         tty->termios.c_iflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 161         tty->termios.c_iflag |= IGNBRK | IGNPAR | IXOFF;
 162         /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 163         tty->termios.c_oflag &= ~ONLCR;
 164 }
 165
 166 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
 167 {
 168         struct device *dev = &port->dev;
 169         int result = 0;
 170         struct kobil_private *priv;
 171         unsigned char *transfer_buffer;
 172         int transfer_buffer_length = 8;
 173
 174         priv = usb_get_serial_port_data(port);
 175
 176         /* allocate memory for transfer buffer */
 177         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 178         if (!transfer_buffer)
 179                 return -ENOMEM;
 180
 181         /* get hardware version */
 182         result = usb_control_msg(port->serial->dev,
 183                           usb_rcvctrlpipe(port->serial->dev, 0),
 184                           SUSBCRequest_GetMisc,
 185                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 186                           SUSBCR_MSC_GetHWVersion,
 187                           0,
 188                           transfer_buffer,
 189                           transfer_buffer_length,
 190                           KOBIL_TIMEOUT
 191         );
 192         dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
 193         dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
 194                 transfer_buffer[1], transfer_buffer[2]);
 195
 196         /* get firmware version */
 197         result = usb_control_msg(port->serial->dev,
 198                           usb_rcvctrlpipe(port->serial->dev, 0),
 199                           SUSBCRequest_GetMisc,
 200                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 201                           SUSBCR_MSC_GetFWVersion,
 202                           0,
 203                           transfer_buffer,
 204                           transfer_buffer_length,
 205                           KOBIL_TIMEOUT
 206         );
 207         dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
 208         dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
 209                 transfer_buffer[1], transfer_buffer[2]);
 210
 211         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 212                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 213                 /* Setting Baudrate, Parity and Stopbits */
 214                 result = usb_control_msg(port->serial->dev,
 215                           usb_sndctrlpipe(port->serial->dev, 0),
 216                           SUSBCRequest_SetBaudRateParityAndStopBits,
 217                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 218                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 219                                                         SUSBCR_SPASB_1StopBit,
 220                           0,
 221                           NULL,
 222                           0,
 223                           KOBIL_TIMEOUT
 224                 );
 225                 dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
 226
 227                 /* reset all queues */
 228                 result = usb_control_msg(port->serial->dev,
 229                           usb_sndctrlpipe(port->serial->dev, 0),
 230                           SUSBCRequest_Misc,
 231                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 232                           SUSBCR_MSC_ResetAllQueues,
 233                           0,
 234                           NULL,
 235                           0,
 236                           KOBIL_TIMEOUT
 237                 );
 238                 dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
 239         }
 240         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 241             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 242             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 243                 /* start reading (Adapter B 'cause PNP string) */
 244                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 245                 dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
 246         }
 247
 248         kfree(transfer_buffer);
 249         return 0;
 250 }
 251
 252
 253 static void kobil_close(struct usb_serial_port *port)
 254 {
 255         /* FIXME: Add rts/dtr methods */
 256         usb_kill_urb(port->interrupt_out_urb);
 257         usb_kill_urb(port->interrupt_in_urb);
 258 }
 259
 260
 261 static void kobil_read_int_callback(struct urb *urb)
 262 {
 263         int result;
 264         struct usb_serial_port *port = urb->context;
 265         unsigned char *data = urb->transfer_buffer;
 266         int status = urb->status;
 267
 268         if (status) {
 269                 dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
 270                 return;
 271         }
 272
 273         if (urb->actual_length) {
 274                 usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
 275                                                                         data);
 276                 tty_insert_flip_string(&port->port, data, urb->actual_length);
 277                 tty_flip_buffer_push(&port->port);
 278         }
 279
 280         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 281         dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
 282 }
 283
 284
 285 static void kobil_write_int_callback(struct urb *urb)
 286 {
 287 }
 288
 289
 290 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 291                         const unsigned char *buf, int count)
 292 {
 293         int length = 0;
 294         int result = 0;
 295         int todo = 0;
 296         struct kobil_private *priv;
 297
 298         if (count == 0) {
 299                 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
 300                 return 0;
 301         }
 302
 303         priv = usb_get_serial_port_data(port);
 304
 305         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 306                 dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
 307                 return -ENOMEM;
 308         }
 309
 310         /* Copy data to buffer */
 311         memcpy(priv->buf + priv->filled, buf, count);
 312         usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
 313         priv->filled = priv->filled + count;
 314
 315         /* only send complete block. TWIN, KAAN SIM and adapter K
 316            use the same protocol. */
 317         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 318              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 319                 /* stop reading (except TWIN and KAAN SIM) */
 320                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 321                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 322                         usb_kill_urb(port->interrupt_in_urb);
 323
 324                 todo = priv->filled - priv->cur_pos;
 325
 326                 while (todo > 0) {
 327                         /* max 8 byte in one urb (endpoint size) */
 328                         length = min(todo, port->interrupt_out_size);
 329                         /* copy data to transfer buffer */
 330                         memcpy(port->interrupt_out_buffer,
 331                                         priv->buf + priv->cur_pos, length);
 332                         port->interrupt_out_urb->transfer_buffer_length = length;
 333
 334                         priv->cur_pos = priv->cur_pos + length;
 335                         result = usb_submit_urb(port->interrupt_out_urb,
 336                                         GFP_ATOMIC);
 337                         dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
 338                         todo = priv->filled - priv->cur_pos;
 339
 340                         if (todo > 0)
 341                                 msleep(24);
 342                 }
 343
 344                 priv->filled = 0;
 345                 priv->cur_pos = 0;
 346
 347                 /* start reading (except TWIN and KAAN SIM) */
 348                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 349                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 350                         result = usb_submit_urb(port->interrupt_in_urb,
 351                                         GFP_ATOMIC);
 352                         dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
 353                 }
 354         }
 355         return count;
 356 }
 357
 358
 359 static int kobil_write_room(struct tty_struct *tty)
 360 {
 361         /* FIXME */
 362         return 8;
 363 }
 364
 365
 366 static int kobil_tiocmget(struct tty_struct *tty)
 367 {
 368         struct usb_serial_port *port = tty->driver_data;
 369         struct kobil_private *priv;
 370         int result;
 371         unsigned char *transfer_buffer;
 372         int transfer_buffer_length = 8;
 373
 374         priv = usb_get_serial_port_data(port);
 375         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 376                         || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 377                 /* This device doesn't support ioctl calls */
 378                 return -EINVAL;
 379         }
 380
 381         /* allocate memory for transfer buffer */
 382         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 383         if (!transfer_buffer)
 384                 return -ENOMEM;
 385
 386         result = usb_control_msg(port->serial->dev,
 387                           usb_rcvctrlpipe(port->serial->dev, 0),
 388                           SUSBCRequest_GetStatusLineState,
 389                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 390                           0,
 391                           0,
 392                           transfer_buffer,
 393                           transfer_buffer_length,
 394                           KOBIL_TIMEOUT);
 395
 396         dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n",
 397                         result);
 398         if (result < 1) {
 399                 if (result >= 0)
 400                         result = -EIO;
 401                 goto out_free;
 402         }
 403
 404         dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]);
 405
 406         result = 0;
 407         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 408                 result = TIOCM_DSR;
 409 out_free:
 410         kfree(transfer_buffer);
 411         return result;
 412 }
 413
 414 static int kobil_tiocmset(struct tty_struct *tty,
 415                            unsigned int set, unsigned int clear)
 416 {
 417         struct usb_serial_port *port = tty->driver_data;
 418         struct device *dev = &port->dev;
 419         struct kobil_private *priv;
 420         int result;
 421         int dtr = 0;
 422         int rts = 0;
 423
 424         /* FIXME: locking ? */
 425         priv = usb_get_serial_port_data(port);
 426         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 427                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 428                 /* This device doesn't support ioctl calls */
 429                 return -EINVAL;
 430         }
 431
 432         if (set & TIOCM_RTS)
 433                 rts = 1;
 434         if (set & TIOCM_DTR)
 435                 dtr = 1;
 436         if (clear & TIOCM_RTS)
 437                 rts = 0;
 438         if (clear & TIOCM_DTR)
 439                 dtr = 0;
 440
 441         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 442                 if (dtr != 0)
 443                         dev_dbg(dev, "%s - Setting DTR\n", __func__);
 444                 else
 445                         dev_dbg(dev, "%s - Clearing DTR\n", __func__);
 446                 result = usb_control_msg(port->serial->dev,
 447                           usb_sndctrlpipe(port->serial->dev, 0),
 448                           SUSBCRequest_SetStatusLinesOrQueues,
 449                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 450                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 451                           0,
 452                           NULL,
 453                           0,
 454                           KOBIL_TIMEOUT);
 455         } else {
 456                 if (rts != 0)
 457                         dev_dbg(dev, "%s - Setting RTS\n", __func__);
 458                 else
 459                         dev_dbg(dev, "%s - Clearing RTS\n", __func__);
 460                 result = usb_control_msg(port->serial->dev,
 461                         usb_sndctrlpipe(port->serial->dev, 0),
 462                         SUSBCRequest_SetStatusLinesOrQueues,
 463                         USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 464                         ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 465                         0,
 466                         NULL,
 467                         0,
 468                         KOBIL_TIMEOUT);
 469         }
 470         dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
 471         return (result < 0) ? result : 0;
 472 }
 473
 474 static void kobil_set_termios(struct tty_struct *tty,
 475                         struct usb_serial_port *port, struct ktermios *old)
 476 {
 477         struct kobil_private *priv;
 478         int result;
 479         unsigned short urb_val = 0;
 480         int c_cflag = tty->termios.c_cflag;
 481         speed_t speed;
 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                 tty_termios_copy_hw(&tty->termios, old);
 488                 return;
 489         }
 490
 491         speed = tty_get_baud_rate(tty);
 492         switch (speed) {
 493         case 1200:
 494                 urb_val = SUSBCR_SBR_1200;
 495                 break;
 496         default:
 497                 speed = 9600;
 498                 /* fall through */
 499         case 9600:
 500                 urb_val = SUSBCR_SBR_9600;
 501                 break;
 502         }
 503         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 504                                                         SUSBCR_SPASB_1StopBit;
 505         if (c_cflag & PARENB) {
 506                 if  (c_cflag & PARODD)
 507                         urb_val |= SUSBCR_SPASB_OddParity;
 508                 else
 509                         urb_val |= SUSBCR_SPASB_EvenParity;
 510         } else
 511                 urb_val |= SUSBCR_SPASB_NoParity;
 512         tty->termios.c_cflag &= ~CMSPAR;
 513         tty_encode_baud_rate(tty, speed, speed);
 514
 515         result = usb_control_msg(port->serial->dev,
 516                   usb_sndctrlpipe(port->serial->dev, 0),
 517                   SUSBCRequest_SetBaudRateParityAndStopBits,
 518                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 519                   urb_val,
 520                   0,
 521                   NULL,
 522                   0,
 523                   KOBIL_TIMEOUT
 524                 );
 525 }
 526
 527 static int kobil_ioctl(struct tty_struct *tty,
 528                                         unsigned int cmd, unsigned long arg)
 529 {
 530         struct usb_serial_port *port = tty->driver_data;
 531         struct kobil_private *priv = usb_get_serial_port_data(port);
 532         int result;
 533
 534         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 535                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 536                 /* This device doesn't support ioctl calls */
 537                 return -ENOIOCTLCMD;
 538
 539         switch (cmd) {
 540         case TCFLSH:
 541                 result = usb_control_msg(port->serial->dev,
 542                           usb_sndctrlpipe(port->serial->dev, 0),
 543                           SUSBCRequest_Misc,
 544                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 545                           SUSBCR_MSC_ResetAllQueues,
 546                           0,
 547                           NULL,
 548                           0,
 549                           KOBIL_TIMEOUT
 550                         );
 551
 552                 dev_dbg(&port->dev,
 553                         "%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
 554                         __func__, result);
 555                 return (result < 0) ? -EIO: 0;
 556         default:
 557                 return -ENOIOCTLCMD;
 558         }
 559 }
 560
 561 module_usb_serial_driver(serial_drivers, id_table);
 562
 563 MODULE_AUTHOR(DRIVER_AUTHOR);
 564 MODULE_DESCRIPTION(DRIVER_DESC);
 565 MODULE_LICENSE("GPL");