drivers/staging/comedi/drivers/vmk80xx.c

   1 /*
   2     comedi/drivers/vmk80xx.c
   3     Velleman USB Board Low-Level Driver
   4
   5     Copyright (C) 2009 Manuel Gebele <forensixs@gmx.de>, Germany
   6
   7     COMEDI - Linux Control and Measurement Device Interface
   8     Copyright (C) 2000 David A. Schleef <ds@schleef.org>
   9
  10     This program is free software; you can redistribute it and/or modify
  11     it under the terms of the GNU General Public License as published by
  12     the Free Software Foundation; either version 2 of the License, or
  13     (at your option) any later version.
  14
  15     This program is distributed in the hope that it will be useful,
  16     but WITHOUT ANY WARRANTY; without even the implied warranty of
  17     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18     GNU General Public License for more details.
  19
  20     You should have received a copy of the GNU General Public License
  21     along with this program; if not, write to the Free Software
  22     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23
  24 */
  25 /*
  26 Driver: vmk80xx
  27 Description: Velleman USB Board Low-Level Driver
  28 Devices: K8055/K8061 aka VM110/VM140
  29 Author: Manuel Gebele <forensixs@gmx.de>
  30 Updated: Sun, 10 May 2009 11:14:59 +0200
  31 Status: works
  32
  33 Supports:
  34  - analog input
  35  - analog output
  36  - digital input
  37  - digital output
  38  - counter
  39  - pwm
  40 */
  41 /*
  42 Changelog:
  43
  44 0.8.81  -3-  code completely rewritten (adjust driver logic)
  45 0.8.81  -2-  full support for K8061
  46 0.8.81  -1-  fix some mistaken among others the number of
  47              supported boards and I/O handling
  48
  49 0.7.76  -4-  renamed to vmk80xx
  50 0.7.76  -3-  detect K8061 (only theoretically supported)
  51 0.7.76  -2-  code completely rewritten (adjust driver logic)
  52 0.7.76  -1-  support for digital and counter subdevice
  53 */
  54
  55 #include <linux/kernel.h>
  56 #include <linux/module.h>
  57 #include <linux/mutex.h>
  58 #include <linux/errno.h>
  59 #include <linux/input.h>
  60 #include <linux/slab.h>
  61 #include <linux/poll.h>
  62 #include <linux/usb.h>
  63 #include <linux/uaccess.h>
  64
  65 #include "../comedidev.h"
  66
  67 enum {
  68         DEVICE_VMK8055,
  69         DEVICE_VMK8061
  70 };
  71
  72 #define VMK8055_DI_REG          0x00
  73 #define VMK8055_DO_REG          0x01
  74 #define VMK8055_AO1_REG         0x02
  75 #define VMK8055_AO2_REG         0x03
  76 #define VMK8055_AI1_REG         0x02
  77 #define VMK8055_AI2_REG         0x03
  78 #define VMK8055_CNT1_REG        0x04
  79 #define VMK8055_CNT2_REG        0x06
  80
  81 #define VMK8061_CH_REG          0x01
  82 #define VMK8061_DI_REG          0x01
  83 #define VMK8061_DO_REG          0x01
  84 #define VMK8061_PWM_REG1        0x01
  85 #define VMK8061_PWM_REG2        0x02
  86 #define VMK8061_CNT_REG         0x02
  87 #define VMK8061_AO_REG          0x02
  88 #define VMK8061_AI_REG1         0x02
  89 #define VMK8061_AI_REG2         0x03
  90
  91 #define VMK8055_CMD_RST         0x00
  92 #define VMK8055_CMD_DEB1_TIME   0x01
  93 #define VMK8055_CMD_DEB2_TIME   0x02
  94 #define VMK8055_CMD_RST_CNT1    0x03
  95 #define VMK8055_CMD_RST_CNT2    0x04
  96 #define VMK8055_CMD_WRT_AD      0x05
  97
  98 #define VMK8061_CMD_RD_AI       0x00
  99 #define VMK8061_CMR_RD_ALL_AI   0x01    /* !non-active! */
 100 #define VMK8061_CMD_SET_AO      0x02
 101 #define VMK8061_CMD_SET_ALL_AO  0x03    /* !non-active! */
 102 #define VMK8061_CMD_OUT_PWM     0x04
 103 #define VMK8061_CMD_RD_DI       0x05
 104 #define VMK8061_CMD_DO          0x06    /* !non-active! */
 105 #define VMK8061_CMD_CLR_DO      0x07
 106 #define VMK8061_CMD_SET_DO      0x08
 107 #define VMK8061_CMD_RD_CNT      0x09    /* TODO: completely pointless? */
 108 #define VMK8061_CMD_RST_CNT     0x0a    /* TODO: completely pointless? */
 109 #define VMK8061_CMD_RD_VERSION  0x0b    /* internal usage */
 110 #define VMK8061_CMD_RD_JMP_STAT 0x0c    /* TODO: not implemented yet */
 111 #define VMK8061_CMD_RD_PWR_STAT 0x0d    /* internal usage */
 112 #define VMK8061_CMD_RD_DO       0x0e
 113 #define VMK8061_CMD_RD_AO       0x0f
 114 #define VMK8061_CMD_RD_PWM      0x10
 115
 116 #define VMK80XX_MAX_BOARDS      COMEDI_NUM_BOARD_MINORS
 117
 118 #define TRANS_OUT_BUSY          1
 119 #define TRANS_IN_BUSY           2
 120 #define TRANS_IN_RUNNING        3
 121
 122 #define IC3_VERSION             (1 << 0)
 123 #define IC6_VERSION             (1 << 1)
 124
 125 #define URB_RCV_FLAG            (1 << 0)
 126 #define URB_SND_FLAG            (1 << 1)
 127
 128 #ifdef CONFIG_COMEDI_DEBUG
 129 static int dbgcm = 1;
 130 #else
 131 static int dbgcm;
 132 #endif
 133
 134 #define dbgcm(fmt, arg...)                     \
 135 do {                                           \
 136         if (dbgcm)                             \
 137                 printk(KERN_DEBUG fmt, ##arg); \
 138 } while (0)
 139
 140 enum vmk80xx_model {
 141         VMK8055_MODEL,
 142         VMK8061_MODEL
 143 };
 144
 145 struct firmware_version {
 146         unsigned char ic3_vers[32];     /* USB-Controller */
 147         unsigned char ic6_vers[32];     /* CPU */
 148 };
 149
 150 static const struct comedi_lrange vmk8055_range = {
 151         1, {UNI_RANGE(5)}
 152 };
 153
 154 static const struct comedi_lrange vmk8061_range = {
 155         2, {UNI_RANGE(5), UNI_RANGE(10)}
 156 };
 157
 158 struct vmk80xx_board {
 159         const char *name;
 160         enum vmk80xx_model model;
 161         const struct comedi_lrange *range;
 162         __u8 ai_chans;
 163         __le16 ai_bits;
 164         __u8 ao_chans;
 165         __le16 ao_bits;
 166         __u8 di_chans;
 167         __le16 di_bits;
 168         __u8 do_chans;
 169         __le16 do_bits;
 170         __u8 cnt_chans;
 171         __le16 cnt_bits;
 172         __u8 pwm_chans;
 173         __le16 pwm_bits;
 174 };
 175
 176 enum {
 177         VMK80XX_SUBD_AI,
 178         VMK80XX_SUBD_AO,
 179         VMK80XX_SUBD_DI,
 180         VMK80XX_SUBD_DO,
 181         VMK80XX_SUBD_CNT,
 182         VMK80XX_SUBD_PWM,
 183 };
 184
 185 struct vmk80xx_usb {
 186         struct usb_device *udev;
 187         struct usb_interface *intf;
 188         struct usb_endpoint_descriptor *ep_rx;
 189         struct usb_endpoint_descriptor *ep_tx;
 190         struct usb_anchor rx_anchor;
 191         struct usb_anchor tx_anchor;
 192         struct vmk80xx_board board;
 193         struct firmware_version fw;
 194         struct semaphore limit_sem;
 195         wait_queue_head_t read_wait;
 196         wait_queue_head_t write_wait;
 197         unsigned char *usb_rx_buf;
 198         unsigned char *usb_tx_buf;
 199         unsigned long flags;
 200         int probed;
 201         int attached;
 202         int count;
 203 };
 204
 205 static struct vmk80xx_usb vmb[VMK80XX_MAX_BOARDS];
 206
 207 static DEFINE_MUTEX(glb_mutex);
 208
 209 static void vmk80xx_tx_callback(struct urb *urb)
 210 {
 211         struct vmk80xx_usb *dev = urb->context;
 212         int stat = urb->status;
 213
 214         if (stat && !(stat == -ENOENT
 215                       || stat == -ECONNRESET || stat == -ESHUTDOWN))
 216                 dbgcm("comedi#: vmk80xx: %s - nonzero urb status (%d)\n",
 217                       __func__, stat);
 218
 219         if (!test_bit(TRANS_OUT_BUSY, &dev->flags))
 220                 return;
 221
 222         clear_bit(TRANS_OUT_BUSY, &dev->flags);
 223
 224         wake_up_interruptible(&dev->write_wait);
 225 }
 226
 227 static void vmk80xx_rx_callback(struct urb *urb)
 228 {
 229         struct vmk80xx_usb *dev = urb->context;
 230         int stat = urb->status;
 231
 232         switch (stat) {
 233         case 0:
 234                 break;
 235         case -ENOENT:
 236         case -ECONNRESET:
 237         case -ESHUTDOWN:
 238                 break;
 239         default:
 240                 dbgcm("comedi#: vmk80xx: %s - nonzero urb status (%d)\n",
 241                       __func__, stat);
 242                 goto resubmit;
 243         }
 244
 245         goto exit;
 246 resubmit:
 247         if (test_bit(TRANS_IN_RUNNING, &dev->flags) && dev->intf) {
 248                 usb_anchor_urb(urb, &dev->rx_anchor);
 249
 250                 if (!usb_submit_urb(urb, GFP_KERNEL))
 251                         goto exit;
 252
 253                 dev_err(&urb->dev->dev,
 254                         "comedi#: vmk80xx: %s - submit urb failed\n",
 255                         __func__);
 256
 257                 usb_unanchor_urb(urb);
 258         }
 259 exit:
 260         clear_bit(TRANS_IN_BUSY, &dev->flags);
 261
 262         wake_up_interruptible(&dev->read_wait);
 263 }
 264
 265 static int vmk80xx_check_data_link(struct vmk80xx_usb *dev)
 266 {
 267         unsigned int tx_pipe;
 268         unsigned int rx_pipe;
 269         unsigned char tx[1];
 270         unsigned char rx[2];
 271
 272         tx_pipe = usb_sndbulkpipe(dev->udev, 0x01);
 273         rx_pipe = usb_rcvbulkpipe(dev->udev, 0x81);
 274
 275         tx[0] = VMK8061_CMD_RD_PWR_STAT;
 276
 277         /*
 278          * Check that IC6 (PIC16F871) is powered and
 279          * running and the data link between IC3 and
 280          * IC6 is working properly
 281          */
 282         usb_bulk_msg(dev->udev, tx_pipe, tx, 1, NULL, dev->ep_tx->bInterval);
 283         usb_bulk_msg(dev->udev, rx_pipe, rx, 2, NULL, HZ * 10);
 284
 285         return (int)rx[1];
 286 }
 287
 288 static void vmk80xx_read_eeprom(struct vmk80xx_usb *dev, int flag)
 289 {
 290         unsigned int tx_pipe;
 291         unsigned int rx_pipe;
 292         unsigned char tx[1];
 293         unsigned char rx[64];
 294         int cnt;
 295
 296         tx_pipe = usb_sndbulkpipe(dev->udev, 0x01);
 297         rx_pipe = usb_rcvbulkpipe(dev->udev, 0x81);
 298
 299         tx[0] = VMK8061_CMD_RD_VERSION;
 300
 301         /*
 302          * Read the firmware version info of IC3 and
 303          * IC6 from the internal EEPROM of the IC
 304          */
 305         usb_bulk_msg(dev->udev, tx_pipe, tx, 1, NULL, dev->ep_tx->bInterval);
 306         usb_bulk_msg(dev->udev, rx_pipe, rx, 64, &cnt, HZ * 10);
 307
 308         rx[cnt] = '\0';
 309
 310         if (flag & IC3_VERSION)
 311                 strncpy(dev->fw.ic3_vers, rx + 1, 24);
 312         else                    /* IC6_VERSION */
 313                 strncpy(dev->fw.ic6_vers, rx + 25, 24);
 314 }
 315
 316 static int vmk80xx_reset_device(struct vmk80xx_usb *dev)
 317 {
 318         struct urb *urb;
 319         unsigned int tx_pipe;
 320         int ival;
 321         size_t size;
 322
 323         urb = usb_alloc_urb(0, GFP_KERNEL);
 324         if (!urb)
 325                 return -ENOMEM;
 326
 327         tx_pipe = usb_sndintpipe(dev->udev, 0x01);
 328
 329         ival = dev->ep_tx->bInterval;
 330         size = le16_to_cpu(dev->ep_tx->wMaxPacketSize);
 331
 332         dev->usb_tx_buf[0] = VMK8055_CMD_RST;
 333         dev->usb_tx_buf[1] = 0x00;
 334         dev->usb_tx_buf[2] = 0x00;
 335         dev->usb_tx_buf[3] = 0x00;
 336         dev->usb_tx_buf[4] = 0x00;
 337         dev->usb_tx_buf[5] = 0x00;
 338         dev->usb_tx_buf[6] = 0x00;
 339         dev->usb_tx_buf[7] = 0x00;
 340
 341         usb_fill_int_urb(urb, dev->udev, tx_pipe, dev->usb_tx_buf,
 342                          size, vmk80xx_tx_callback, dev, ival);
 343
 344         usb_anchor_urb(urb, &dev->tx_anchor);
 345
 346         return usb_submit_urb(urb, GFP_KERNEL);
 347 }
 348
 349 static void vmk80xx_build_int_urb(struct urb *urb, int flag)
 350 {
 351         struct vmk80xx_usb *dev = urb->context;
 352         __u8 rx_addr;
 353         __u8 tx_addr;
 354         unsigned int pipe;
 355         unsigned char *buf;
 356         size_t size;
 357         void (*callback) (struct urb *);
 358         int ival;
 359
 360         if (flag & URB_RCV_FLAG) {
 361                 rx_addr = dev->ep_rx->bEndpointAddress;
 362                 pipe = usb_rcvintpipe(dev->udev, rx_addr);
 363                 buf = dev->usb_rx_buf;
 364                 size = le16_to_cpu(dev->ep_rx->wMaxPacketSize);
 365                 callback = vmk80xx_rx_callback;
 366                 ival = dev->ep_rx->bInterval;
 367         } else {                /* URB_SND_FLAG */
 368                 tx_addr = dev->ep_tx->bEndpointAddress;
 369                 pipe = usb_sndintpipe(dev->udev, tx_addr);
 370                 buf = dev->usb_tx_buf;
 371                 size = le16_to_cpu(dev->ep_tx->wMaxPacketSize);
 372                 callback = vmk80xx_tx_callback;
 373                 ival = dev->ep_tx->bInterval;
 374         }
 375
 376         usb_fill_int_urb(urb, dev->udev, pipe, buf, size, callback, dev, ival);
 377 }
 378
 379 static void vmk80xx_do_bulk_msg(struct vmk80xx_usb *dev)
 380 {
 381         __u8 tx_addr;
 382         __u8 rx_addr;
 383         unsigned int tx_pipe;
 384         unsigned int rx_pipe;
 385         size_t size;
 386
 387         set_bit(TRANS_IN_BUSY, &dev->flags);
 388         set_bit(TRANS_OUT_BUSY, &dev->flags);
 389
 390         tx_addr = dev->ep_tx->bEndpointAddress;
 391         rx_addr = dev->ep_rx->bEndpointAddress;
 392         tx_pipe = usb_sndbulkpipe(dev->udev, tx_addr);
 393         rx_pipe = usb_rcvbulkpipe(dev->udev, rx_addr);
 394
 395         /*
 396          * The max packet size attributes of the K8061
 397          * input/output endpoints are identical
 398          */
 399         size = le16_to_cpu(dev->ep_tx->wMaxPacketSize);
 400
 401         usb_bulk_msg(dev->udev, tx_pipe, dev->usb_tx_buf,
 402                      size, NULL, dev->ep_tx->bInterval);
 403         usb_bulk_msg(dev->udev, rx_pipe, dev->usb_rx_buf, size, NULL, HZ * 10);
 404
 405         clear_bit(TRANS_OUT_BUSY, &dev->flags);
 406         clear_bit(TRANS_IN_BUSY, &dev->flags);
 407 }
 408
 409 static int vmk80xx_read_packet(struct vmk80xx_usb *dev)
 410 {
 411         struct urb *urb;
 412         int retval;
 413
 414         if (!dev->intf)
 415                 return -ENODEV;
 416
 417         /* Only useful for interrupt transfers */
 418         if (test_bit(TRANS_IN_BUSY, &dev->flags))
 419                 if (wait_event_interruptible(dev->read_wait,
 420                                              !test_bit(TRANS_IN_BUSY,
 421                                                        &dev->flags)))
 422                         return -ERESTART;
 423
 424         if (dev->board.model == VMK8061_MODEL) {
 425                 vmk80xx_do_bulk_msg(dev);
 426
 427                 return 0;
 428         }
 429
 430         urb = usb_alloc_urb(0, GFP_KERNEL);
 431         if (!urb)
 432                 return -ENOMEM;
 433
 434         urb->context = dev;
 435         vmk80xx_build_int_urb(urb, URB_RCV_FLAG);
 436
 437         set_bit(TRANS_IN_RUNNING, &dev->flags);
 438         set_bit(TRANS_IN_BUSY, &dev->flags);
 439
 440         usb_anchor_urb(urb, &dev->rx_anchor);
 441
 442         retval = usb_submit_urb(urb, GFP_KERNEL);
 443         if (!retval)
 444                 goto exit;
 445
 446         clear_bit(TRANS_IN_RUNNING, &dev->flags);
 447         usb_unanchor_urb(urb);
 448
 449 exit:
 450         usb_free_urb(urb);
 451
 452         return retval;
 453 }
 454
 455 static int vmk80xx_write_packet(struct vmk80xx_usb *dev, int cmd)
 456 {
 457         struct urb *urb;
 458         int retval;
 459
 460         if (!dev->intf)
 461                 return -ENODEV;
 462
 463         if (test_bit(TRANS_OUT_BUSY, &dev->flags))
 464                 if (wait_event_interruptible(dev->write_wait,
 465                                              !test_bit(TRANS_OUT_BUSY,
 466                                                        &dev->flags)))
 467                         return -ERESTART;
 468
 469         if (dev->board.model == VMK8061_MODEL) {
 470                 dev->usb_tx_buf[0] = cmd;
 471                 vmk80xx_do_bulk_msg(dev);
 472
 473                 return 0;
 474         }
 475
 476         urb = usb_alloc_urb(0, GFP_KERNEL);
 477         if (!urb)
 478                 return -ENOMEM;
 479
 480         urb->context = dev;
 481         vmk80xx_build_int_urb(urb, URB_SND_FLAG);
 482
 483         set_bit(TRANS_OUT_BUSY, &dev->flags);
 484
 485         usb_anchor_urb(urb, &dev->tx_anchor);
 486
 487         dev->usb_tx_buf[0] = cmd;
 488
 489         retval = usb_submit_urb(urb, GFP_KERNEL);
 490         if (!retval)
 491                 goto exit;
 492
 493         clear_bit(TRANS_OUT_BUSY, &dev->flags);
 494         usb_unanchor_urb(urb);
 495
 496 exit:
 497         usb_free_urb(urb);
 498
 499         return retval;
 500 }
 501
 502 #define DIR_IN  1
 503 #define DIR_OUT 2
 504
 505 static int rudimentary_check(struct vmk80xx_usb *dev, int dir)
 506 {
 507         if (!dev)
 508                 return -EFAULT;
 509         if (!dev->probed)
 510                 return -ENODEV;
 511         if (!dev->attached)
 512                 return -ENODEV;
 513         if (dir & DIR_IN) {
 514                 if (test_bit(TRANS_IN_BUSY, &dev->flags))
 515                         return -EBUSY;
 516         }
 517         if (dir & DIR_OUT) {
 518                 if (test_bit(TRANS_OUT_BUSY, &dev->flags))
 519                         return -EBUSY;
 520         }
 521
 522         return 0;
 523 }
 524
 525 static int vmk80xx_ai_rinsn(struct comedi_device *cdev,
 526                             struct comedi_subdevice *s,
 527                             struct comedi_insn *insn, unsigned int *data)
 528 {
 529         struct vmk80xx_usb *dev = cdev->private;
 530         int chan;
 531         int reg[2];
 532         int n;
 533
 534         n = rudimentary_check(dev, DIR_IN);
 535         if (n)
 536                 return n;
 537
 538         down(&dev->limit_sem);
 539         chan = CR_CHAN(insn->chanspec);
 540
 541         switch (dev->board.model) {
 542         case VMK8055_MODEL:
 543                 if (!chan)
 544                         reg[0] = VMK8055_AI1_REG;
 545                 else
 546                         reg[0] = VMK8055_AI2_REG;
 547                 break;
 548         case VMK8061_MODEL:
 549         default:
 550                 reg[0] = VMK8061_AI_REG1;
 551                 reg[1] = VMK8061_AI_REG2;
 552                 dev->usb_tx_buf[0] = VMK8061_CMD_RD_AI;
 553                 dev->usb_tx_buf[VMK8061_CH_REG] = chan;
 554                 break;
 555         }
 556
 557         for (n = 0; n < insn->n; n++) {
 558                 if (vmk80xx_read_packet(dev))
 559                         break;
 560
 561                 if (dev->board.model == VMK8055_MODEL) {
 562                         data[n] = dev->usb_rx_buf[reg[0]];
 563                         continue;
 564                 }
 565
 566                 /* VMK8061_MODEL */
 567                 data[n] = dev->usb_rx_buf[reg[0]] + 256 *
 568                     dev->usb_rx_buf[reg[1]];
 569         }
 570
 571         up(&dev->limit_sem);
 572
 573         return n;
 574 }
 575
 576 static int vmk80xx_ao_winsn(struct comedi_device *cdev,
 577                             struct comedi_subdevice *s,
 578                             struct comedi_insn *insn, unsigned int *data)
 579 {
 580         struct vmk80xx_usb *dev = cdev->private;
 581         int chan;
 582         int cmd;
 583         int reg;
 584         int n;
 585
 586         n = rudimentary_check(dev, DIR_OUT);
 587         if (n)
 588                 return n;
 589
 590         down(&dev->limit_sem);
 591         chan = CR_CHAN(insn->chanspec);
 592
 593         switch (dev->board.model) {
 594         case VMK8055_MODEL:
 595                 cmd = VMK8055_CMD_WRT_AD;
 596                 if (!chan)
 597                         reg = VMK8055_AO1_REG;
 598                 else
 599                         reg = VMK8055_AO2_REG;
 600                 break;
 601         default:                /* NOTE: avoid compiler warnings */
 602                 cmd = VMK8061_CMD_SET_AO;
 603                 reg = VMK8061_AO_REG;
 604                 dev->usb_tx_buf[VMK8061_CH_REG] = chan;
 605                 break;
 606         }
 607
 608         for (n = 0; n < insn->n; n++) {
 609                 dev->usb_tx_buf[reg] = data[n];
 610
 611                 if (vmk80xx_write_packet(dev, cmd))
 612                         break;
 613         }
 614
 615         up(&dev->limit_sem);
 616
 617         return n;
 618 }
 619
 620 static int vmk80xx_ao_rinsn(struct comedi_device *cdev,
 621                             struct comedi_subdevice *s,
 622                             struct comedi_insn *insn, unsigned int *data)
 623 {
 624         struct vmk80xx_usb *dev = cdev->private;
 625         int chan;
 626         int reg;
 627         int n;
 628
 629         n = rudimentary_check(dev, DIR_IN);
 630         if (n)
 631                 return n;
 632
 633         down(&dev->limit_sem);
 634         chan = CR_CHAN(insn->chanspec);
 635
 636         reg = VMK8061_AO_REG - 1;
 637
 638         dev->usb_tx_buf[0] = VMK8061_CMD_RD_AO;
 639
 640         for (n = 0; n < insn->n; n++) {
 641                 if (vmk80xx_read_packet(dev))
 642                         break;
 643
 644                 data[n] = dev->usb_rx_buf[reg + chan];
 645         }
 646
 647         up(&dev->limit_sem);
 648
 649         return n;
 650 }
 651
 652 static int vmk80xx_di_bits(struct comedi_device *cdev,
 653                            struct comedi_subdevice *s,
 654                            struct comedi_insn *insn, unsigned int *data)
 655 {
 656         struct vmk80xx_usb *dev = cdev->private;
 657         unsigned char *rx_buf;
 658         int reg;
 659         int retval;
 660
 661         retval = rudimentary_check(dev, DIR_IN);
 662         if (retval)
 663                 return retval;
 664
 665         down(&dev->limit_sem);
 666
 667         rx_buf = dev->usb_rx_buf;
 668
 669         if (dev->board.model == VMK8061_MODEL) {
 670                 reg = VMK8061_DI_REG;
 671                 dev->usb_tx_buf[0] = VMK8061_CMD_RD_DI;
 672         } else {
 673                 reg = VMK8055_DI_REG;
 674         }
 675
 676         retval = vmk80xx_read_packet(dev);
 677
 678         if (!retval) {
 679                 if (dev->board.model == VMK8055_MODEL)
 680                         data[1] = (((rx_buf[reg] >> 4) & 0x03) |
 681                                   ((rx_buf[reg] << 2) & 0x04) |
 682                                   ((rx_buf[reg] >> 3) & 0x18));
 683                 else
 684                         data[1] = rx_buf[reg];
 685
 686                 retval = 2;
 687         }
 688
 689         up(&dev->limit_sem);
 690
 691         return retval;
 692 }
 693
 694 static int vmk80xx_di_rinsn(struct comedi_device *cdev,
 695                             struct comedi_subdevice *s,
 696                             struct comedi_insn *insn, unsigned int *data)
 697 {
 698         struct vmk80xx_usb *dev = cdev->private;
 699         int chan;
 700         unsigned char *rx_buf;
 701         int reg;
 702         int inp;
 703         int n;
 704
 705         n = rudimentary_check(dev, DIR_IN);
 706         if (n)
 707                 return n;
 708
 709         down(&dev->limit_sem);
 710         chan = CR_CHAN(insn->chanspec);
 711
 712         rx_buf = dev->usb_rx_buf;
 713
 714         if (dev->board.model == VMK8061_MODEL) {
 715                 reg = VMK8061_DI_REG;
 716                 dev->usb_tx_buf[0] = VMK8061_CMD_RD_DI;
 717         } else {
 718                 reg = VMK8055_DI_REG;
 719         }
 720         for (n = 0; n < insn->n; n++) {
 721                 if (vmk80xx_read_packet(dev))
 722                         break;
 723
 724                 if (dev->board.model == VMK8055_MODEL)
 725                         inp = (((rx_buf[reg] >> 4) & 0x03) |
 726                                ((rx_buf[reg] << 2) & 0x04) |
 727                                ((rx_buf[reg] >> 3) & 0x18));
 728                 else
 729                         inp = rx_buf[reg];
 730
 731                 data[n] = (inp >> chan) & 1;
 732         }
 733
 734         up(&dev->limit_sem);
 735
 736         return n;
 737 }
 738
 739 static int vmk80xx_do_winsn(struct comedi_device *cdev,
 740                             struct comedi_subdevice *s,
 741                             struct comedi_insn *insn, unsigned int *data)
 742 {
 743         struct vmk80xx_usb *dev = cdev->private;
 744         int chan;
 745         unsigned char *tx_buf;
 746         int reg;
 747         int cmd;
 748         int n;
 749
 750         n = rudimentary_check(dev, DIR_OUT);
 751         if (n)
 752                 return n;
 753
 754         down(&dev->limit_sem);
 755         chan = CR_CHAN(insn->chanspec);
 756
 757         tx_buf = dev->usb_tx_buf;
 758
 759         for (n = 0; n < insn->n; n++) {
 760                 if (dev->board.model == VMK8055_MODEL) {
 761                         reg = VMK8055_DO_REG;
 762                         cmd = VMK8055_CMD_WRT_AD;
 763                         if (data[n] == 1)
 764                                 tx_buf[reg] |= (1 << chan);
 765                         else
 766                                 tx_buf[reg] ^= (1 << chan);
 767                 } else { /* VMK8061_MODEL */
 768                         reg = VMK8061_DO_REG;
 769                         if (data[n] == 1) {
 770                                 cmd = VMK8061_CMD_SET_DO;
 771                                 tx_buf[reg] = 1 << chan;
 772                         } else {
 773                                 cmd = VMK8061_CMD_CLR_DO;
 774                                 tx_buf[reg] = 0xff - (1 << chan);
 775                         }
 776                 }
 777
 778                 if (vmk80xx_write_packet(dev, cmd))
 779                         break;
 780         }
 781
 782         up(&dev->limit_sem);
 783
 784         return n;
 785 }
 786
 787 static int vmk80xx_do_rinsn(struct comedi_device *cdev,
 788                             struct comedi_subdevice *s,
 789                             struct comedi_insn *insn, unsigned int *data)
 790 {
 791         struct vmk80xx_usb *dev = cdev->private;
 792         int chan;
 793         int reg;
 794         int n;
 795
 796         n = rudimentary_check(dev, DIR_IN);
 797         if (n)
 798                 return n;
 799
 800         down(&dev->limit_sem);
 801         chan = CR_CHAN(insn->chanspec);
 802
 803         reg = VMK8061_DO_REG;
 804
 805         dev->usb_tx_buf[0] = VMK8061_CMD_RD_DO;
 806
 807         for (n = 0; n < insn->n; n++) {
 808                 if (vmk80xx_read_packet(dev))
 809                         break;
 810
 811                 data[n] = (dev->usb_rx_buf[reg] >> chan) & 1;
 812         }
 813
 814         up(&dev->limit_sem);
 815
 816         return n;
 817 }
 818
 819 static int vmk80xx_do_bits(struct comedi_device *cdev,
 820                            struct comedi_subdevice *s,
 821                            struct comedi_insn *insn, unsigned int *data)
 822 {
 823         struct vmk80xx_usb *dev = cdev->private;
 824         unsigned char *rx_buf, *tx_buf;
 825         int dir, reg, cmd;
 826         int retval;
 827
 828         dir = 0;
 829
 830         if (data[0])
 831                 dir |= DIR_OUT;
 832
 833         if (dev->board.model == VMK8061_MODEL)
 834                 dir |= DIR_IN;
 835
 836         retval = rudimentary_check(dev, dir);
 837         if (retval)
 838                 return retval;
 839
 840         down(&dev->limit_sem);
 841
 842         rx_buf = dev->usb_rx_buf;
 843         tx_buf = dev->usb_tx_buf;
 844
 845         if (data[0]) {
 846                 if (dev->board.model == VMK8055_MODEL) {
 847                         reg = VMK8055_DO_REG;
 848                         cmd = VMK8055_CMD_WRT_AD;
 849                 } else { /* VMK8061_MODEL */
 850                         reg = VMK8061_DO_REG;
 851                         cmd = VMK8061_CMD_DO;
 852                 }
 853
 854                 tx_buf[reg] &= ~data[0];
 855                 tx_buf[reg] |= (data[0] & data[1]);
 856
 857                 retval = vmk80xx_write_packet(dev, cmd);
 858
 859                 if (retval)
 860                         goto out;
 861         }
 862
 863         if (dev->board.model == VMK8061_MODEL) {
 864                 reg = VMK8061_DO_REG;
 865                 tx_buf[0] = VMK8061_CMD_RD_DO;
 866
 867                 retval = vmk80xx_read_packet(dev);
 868
 869                 if (!retval) {
 870                         data[1] = rx_buf[reg];
 871                         retval = 2;
 872                 }
 873         } else {
 874                 data[1] = tx_buf[reg];
 875                 retval = 2;
 876         }
 877
 878 out:
 879         up(&dev->limit_sem);
 880
 881         return retval;
 882 }
 883
 884 static int vmk80xx_cnt_rinsn(struct comedi_device *cdev,
 885                              struct comedi_subdevice *s,
 886                              struct comedi_insn *insn, unsigned int *data)
 887 {
 888         struct vmk80xx_usb *dev = cdev->private;
 889         int chan;
 890         int reg[2];
 891         int n;
 892
 893         n = rudimentary_check(dev, DIR_IN);
 894         if (n)
 895                 return n;
 896
 897         down(&dev->limit_sem);
 898         chan = CR_CHAN(insn->chanspec);
 899
 900         switch (dev->board.model) {
 901         case VMK8055_MODEL:
 902                 if (!chan)
 903                         reg[0] = VMK8055_CNT1_REG;
 904                 else
 905                         reg[0] = VMK8055_CNT2_REG;
 906                 break;
 907         case VMK8061_MODEL:
 908         default:
 909                 reg[0] = VMK8061_CNT_REG;
 910                 reg[1] = VMK8061_CNT_REG;
 911                 dev->usb_tx_buf[0] = VMK8061_CMD_RD_CNT;
 912                 break;
 913         }
 914
 915         for (n = 0; n < insn->n; n++) {
 916                 if (vmk80xx_read_packet(dev))
 917                         break;
 918
 919                 if (dev->board.model == VMK8055_MODEL)
 920                         data[n] = dev->usb_rx_buf[reg[0]];
 921                 else /* VMK8061_MODEL */
 922                         data[n] = dev->usb_rx_buf[reg[0] * (chan + 1) + 1]
 923                             + 256 * dev->usb_rx_buf[reg[1] * 2 + 2];
 924         }
 925
 926         up(&dev->limit_sem);
 927
 928         return n;
 929 }
 930
 931 static int vmk80xx_cnt_cinsn(struct comedi_device *cdev,
 932                              struct comedi_subdevice *s,
 933                              struct comedi_insn *insn, unsigned int *data)
 934 {
 935         struct vmk80xx_usb *dev = cdev->private;
 936         unsigned int insn_cmd;
 937         int chan;
 938         int cmd;
 939         int reg;
 940         int n;
 941
 942         n = rudimentary_check(dev, DIR_OUT);
 943         if (n)
 944                 return n;
 945
 946         insn_cmd = data[0];
 947         if (insn_cmd != INSN_CONFIG_RESET && insn_cmd != GPCT_RESET)
 948                 return -EINVAL;
 949
 950         down(&dev->limit_sem);
 951
 952         chan = CR_CHAN(insn->chanspec);
 953
 954         if (dev->board.model == VMK8055_MODEL) {
 955                 if (!chan) {
 956                         cmd = VMK8055_CMD_RST_CNT1;
 957                         reg = VMK8055_CNT1_REG;
 958                 } else {
 959                         cmd = VMK8055_CMD_RST_CNT2;
 960                         reg = VMK8055_CNT2_REG;
 961                 }
 962
 963                 dev->usb_tx_buf[reg] = 0x00;
 964         } else {
 965                 cmd = VMK8061_CMD_RST_CNT;
 966         }
 967
 968         for (n = 0; n < insn->n; n++)
 969                 if (vmk80xx_write_packet(dev, cmd))
 970                         break;
 971
 972         up(&dev->limit_sem);
 973
 974         return n;
 975 }
 976
 977 static int vmk80xx_cnt_winsn(struct comedi_device *cdev,
 978                              struct comedi_subdevice *s,
 979                              struct comedi_insn *insn, unsigned int *data)
 980 {
 981         struct vmk80xx_usb *dev = cdev->private;
 982         unsigned long debtime;
 983         unsigned long val;
 984         int chan;
 985         int cmd;
 986         int n;
 987
 988         n = rudimentary_check(dev, DIR_OUT);
 989         if (n)
 990                 return n;
 991
 992         down(&dev->limit_sem);
 993         chan = CR_CHAN(insn->chanspec);
 994
 995         if (!chan)
 996                 cmd = VMK8055_CMD_DEB1_TIME;
 997         else
 998                 cmd = VMK8055_CMD_DEB2_TIME;
 999
1000         for (n = 0; n < insn->n; n++) {
1001                 debtime = data[n];
1002                 if (debtime == 0)
1003                         debtime = 1;
1004
1005                 /* TODO: Prevent overflows */
1006                 if (debtime > 7450)
1007                         debtime = 7450;
1008
1009                 val = int_sqrt(debtime * 1000 / 115);
1010                 if (((val + 1) * val) < debtime * 1000 / 115)
1011                         val += 1;
1012
1013                 dev->usb_tx_buf[6 + chan] = val;
1014
1015                 if (vmk80xx_write_packet(dev, cmd))
1016                         break;
1017         }
1018
1019         up(&dev->limit_sem);
1020
1021         return n;
1022 }
1023
1024 static int vmk80xx_pwm_rinsn(struct comedi_device *cdev,
1025                              struct comedi_subdevice *s,
1026                              struct comedi_insn *insn, unsigned int *data)
1027 {
1028         struct vmk80xx_usb *dev = cdev->private;
1029         int reg[2];
1030         int n;
1031
1032         n = rudimentary_check(dev, DIR_IN);
1033         if (n)
1034                 return n;
1035
1036         down(&dev->limit_sem);
1037
1038         reg[0] = VMK8061_PWM_REG1;
1039         reg[1] = VMK8061_PWM_REG2;
1040
1041         dev->usb_tx_buf[0] = VMK8061_CMD_RD_PWM;
1042
1043         for (n = 0; n < insn->n; n++) {
1044                 if (vmk80xx_read_packet(dev))
1045                         break;
1046
1047                 data[n] = dev->usb_rx_buf[reg[0]] + 4 * dev->usb_rx_buf[reg[1]];
1048         }
1049
1050         up(&dev->limit_sem);
1051
1052         return n;
1053 }
1054
1055 static int vmk80xx_pwm_winsn(struct comedi_device *cdev,
1056                              struct comedi_subdevice *s,
1057                              struct comedi_insn *insn, unsigned int *data)
1058 {
1059         struct vmk80xx_usb *dev = cdev->private;
1060         unsigned char *tx_buf;
1061         int reg[2];
1062         int cmd;
1063         int n;
1064
1065         n = rudimentary_check(dev, DIR_OUT);
1066         if (n)
1067                 return n;
1068
1069         down(&dev->limit_sem);
1070
1071         tx_buf = dev->usb_tx_buf;
1072
1073         reg[0] = VMK8061_PWM_REG1;
1074         reg[1] = VMK8061_PWM_REG2;
1075
1076         cmd = VMK8061_CMD_OUT_PWM;
1077
1078         /*
1079          * The followin piece of code was translated from the inline
1080          * assembler code in the DLL source code.
1081          *
1082          * asm
1083          *   mov eax, k  ; k is the value (data[n])
1084          *   and al, 03h ; al are the lower 8 bits of eax
1085          *   mov lo, al  ; lo is the low part (tx_buf[reg[0]])
1086          *   mov eax, k
1087          *   shr eax, 2  ; right shift eax register by 2
1088          *   mov hi, al  ; hi is the high part (tx_buf[reg[1]])
1089          * end;
1090          */
1091         for (n = 0; n < insn->n; n++) {
1092                 tx_buf[reg[0]] = (unsigned char)(data[n] & 0x03);
1093                 tx_buf[reg[1]] = (unsigned char)(data[n] >> 2) & 0xff;
1094
1095                 if (vmk80xx_write_packet(dev, cmd))
1096                         break;
1097         }
1098
1099         up(&dev->limit_sem);
1100
1101         return n;
1102 }
1103
1104 static int vmk80xx_attach_common(struct comedi_device *cdev,
1105                                  struct vmk80xx_usb *dev)
1106 {
1107         int n_subd;
1108         struct comedi_subdevice *s;
1109         int ret;
1110
1111         down(&dev->limit_sem);
1112         cdev->board_name = dev->board.name;
1113         cdev->private = dev;
1114         if (dev->board.model == VMK8055_MODEL)
1115                 n_subd = 5;
1116         else
1117                 n_subd = 6;
1118         ret = comedi_alloc_subdevices(cdev, n_subd);
1119         if (ret) {
1120                 up(&dev->limit_sem);
1121                 return ret;
1122         }
1123         /* Analog input subdevice */
1124         s = &cdev->subdevices[VMK80XX_SUBD_AI];
1125         s->type = COMEDI_SUBD_AI;
1126         s->subdev_flags = SDF_READABLE | SDF_GROUND;
1127         s->n_chan = dev->board.ai_chans;
1128         s->maxdata = (1 << dev->board.ai_bits) - 1;
1129         s->range_table = dev->board.range;
1130         s->insn_read = vmk80xx_ai_rinsn;
1131         /* Analog output subdevice */
1132         s = &cdev->subdevices[VMK80XX_SUBD_AO];
1133         s->type = COMEDI_SUBD_AO;
1134         s->subdev_flags = SDF_WRITEABLE | SDF_GROUND;
1135         s->n_chan = dev->board.ao_chans;
1136         s->maxdata = (1 << dev->board.ao_bits) - 1;
1137         s->range_table = dev->board.range;
1138         s->insn_write = vmk80xx_ao_winsn;
1139         if (dev->board.model == VMK8061_MODEL) {
1140                 s->subdev_flags |= SDF_READABLE;
1141                 s->insn_read = vmk80xx_ao_rinsn;
1142         }
1143         /* Digital input subdevice */
1144         s = &cdev->subdevices[VMK80XX_SUBD_DI];
1145         s->type = COMEDI_SUBD_DI;
1146         s->subdev_flags = SDF_READABLE | SDF_GROUND;
1147         s->n_chan = dev->board.di_chans;
1148         s->maxdata = 1;
1149         s->insn_read = vmk80xx_di_rinsn;
1150         s->insn_bits = vmk80xx_di_bits;
1151         /* Digital output subdevice */
1152         s = &cdev->subdevices[VMK80XX_SUBD_DO];
1153         s->type = COMEDI_SUBD_DO;
1154         s->subdev_flags = SDF_WRITEABLE | SDF_GROUND;
1155         s->n_chan = dev->board.do_chans;
1156         s->maxdata = 1;
1157         s->insn_write = vmk80xx_do_winsn;
1158         s->insn_bits = vmk80xx_do_bits;
1159         if (dev->board.model == VMK8061_MODEL) {
1160                 s->subdev_flags |= SDF_READABLE;
1161                 s->insn_read = vmk80xx_do_rinsn;
1162         }
1163         /* Counter subdevice */
1164         s = &cdev->subdevices[VMK80XX_SUBD_CNT];
1165         s->type = COMEDI_SUBD_COUNTER;
1166         s->subdev_flags = SDF_READABLE;
1167         s->n_chan = dev->board.cnt_chans;
1168         s->insn_read = vmk80xx_cnt_rinsn;
1169         s->insn_config = vmk80xx_cnt_cinsn;
1170         if (dev->board.model == VMK8055_MODEL) {
1171                 s->subdev_flags |= SDF_WRITEABLE;
1172                 s->maxdata = (1 << dev->board.cnt_bits) - 1;
1173                 s->insn_write = vmk80xx_cnt_winsn;
1174         }
1175         /* PWM subdevice */
1176         if (dev->board.model == VMK8061_MODEL) {
1177                 s = &cdev->subdevices[VMK80XX_SUBD_PWM];
1178                 s->type = COMEDI_SUBD_PWM;
1179                 s->subdev_flags = SDF_READABLE | SDF_WRITEABLE;
1180                 s->n_chan = dev->board.pwm_chans;
1181                 s->maxdata = (1 << dev->board.pwm_bits) - 1;
1182                 s->insn_read = vmk80xx_pwm_rinsn;
1183                 s->insn_write = vmk80xx_pwm_winsn;
1184         }
1185         dev->attached = 1;
1186         dev_info(cdev->class_dev, "vmk80xx: board #%d [%s] attached\n",
1187                  dev->count, dev->board.name);
1188         up(&dev->limit_sem);
1189         return 0;
1190 }
1191
1192 static int vmk80xx_auto_attach(struct comedi_device *cdev,
1193                                unsigned long context_unused)
1194 {
1195         struct usb_interface *intf = comedi_to_usb_interface(cdev);
1196         int i;
1197         int ret;
1198
1199         mutex_lock(&glb_mutex);
1200         for (i = 0; i < VMK80XX_MAX_BOARDS; i++)
1201                 if (vmb[i].probed && vmb[i].intf == intf)
1202                         break;
1203         if (i == VMK80XX_MAX_BOARDS)
1204                 ret = -ENODEV;
1205         else if (vmb[i].attached)
1206                 ret = -EBUSY;
1207         else
1208                 ret = vmk80xx_attach_common(cdev, &vmb[i]);
1209         mutex_unlock(&glb_mutex);
1210         return ret;
1211 }
1212
1213 static void vmk80xx_detach(struct comedi_device *dev)
1214 {
1215         struct vmk80xx_usb *usb = dev->private;
1216
1217         if (!usb)
1218                 return;
1219
1220         mutex_lock(&glb_mutex);
1221         down(&usb->limit_sem);
1222
1223         dev->private = NULL;
1224
1225         usb->attached = 0;
1226         usb->probed = 0;
1227         usb_set_intfdata(usb->intf, NULL);
1228
1229         usb_kill_anchored_urbs(&usb->rx_anchor);
1230         usb_kill_anchored_urbs(&usb->tx_anchor);
1231
1232         kfree(usb->usb_rx_buf);
1233         kfree(usb->usb_tx_buf);
1234
1235         up(&usb->limit_sem);
1236         mutex_unlock(&glb_mutex);
1237 }
1238
1239 static struct comedi_driver vmk80xx_driver = {
1240         .module         = THIS_MODULE,
1241         .driver_name    = "vmk80xx",
1242         .auto_attach    = vmk80xx_auto_attach,
1243         .detach         = vmk80xx_detach,
1244 };
1245
1246 static int vmk80xx_usb_probe(struct usb_interface *intf,
1247                              const struct usb_device_id *id)
1248 {
1249         int i;
1250         struct vmk80xx_usb *dev;
1251         struct usb_host_interface *iface_desc;
1252         struct usb_endpoint_descriptor *ep_desc;
1253         size_t size;
1254
1255         mutex_lock(&glb_mutex);
1256
1257         for (i = 0; i < VMK80XX_MAX_BOARDS; i++)
1258                 if (!vmb[i].probed)
1259                         break;
1260
1261         if (i == VMK80XX_MAX_BOARDS) {
1262                 mutex_unlock(&glb_mutex);
1263                 return -EMFILE;
1264         }
1265
1266         dev = &vmb[i];
1267
1268         memset(dev, 0x00, sizeof(struct vmk80xx_usb));
1269         dev->count = i;
1270
1271         iface_desc = intf->cur_altsetting;
1272         if (iface_desc->desc.bNumEndpoints != 2)
1273                 goto error;
1274
1275         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1276                 ep_desc = &iface_desc->endpoint[i].desc;
1277
1278                 if (usb_endpoint_is_int_in(ep_desc)) {
1279                         dev->ep_rx = ep_desc;
1280                         continue;
1281                 }
1282
1283                 if (usb_endpoint_is_int_out(ep_desc)) {
1284                         dev->ep_tx = ep_desc;
1285                         continue;
1286                 }
1287
1288                 if (usb_endpoint_is_bulk_in(ep_desc)) {
1289                         dev->ep_rx = ep_desc;
1290                         continue;
1291                 }
1292
1293                 if (usb_endpoint_is_bulk_out(ep_desc)) {
1294                         dev->ep_tx = ep_desc;
1295                         continue;
1296                 }
1297         }
1298
1299         if (!dev->ep_rx || !dev->ep_tx)
1300                 goto error;
1301
1302         size = le16_to_cpu(dev->ep_rx->wMaxPacketSize);
1303         dev->usb_rx_buf = kmalloc(size, GFP_KERNEL);
1304         if (!dev->usb_rx_buf) {
1305                 mutex_unlock(&glb_mutex);
1306                 return -ENOMEM;
1307         }
1308
1309         size = le16_to_cpu(dev->ep_tx->wMaxPacketSize);
1310         dev->usb_tx_buf = kmalloc(size, GFP_KERNEL);
1311         if (!dev->usb_tx_buf) {
1312                 kfree(dev->usb_rx_buf);
1313                 mutex_unlock(&glb_mutex);
1314                 return -ENOMEM;
1315         }
1316
1317         dev->udev = interface_to_usbdev(intf);
1318         dev->intf = intf;
1319
1320         sema_init(&dev->limit_sem, 8);
1321         init_waitqueue_head(&dev->read_wait);
1322         init_waitqueue_head(&dev->write_wait);
1323
1324         init_usb_anchor(&dev->rx_anchor);
1325         init_usb_anchor(&dev->tx_anchor);
1326
1327         usb_set_intfdata(intf, dev);
1328
1329         switch (id->driver_info) {
1330         case DEVICE_VMK8055:
1331                 dev->board.name = "K8055 (VM110)";
1332                 dev->board.model = VMK8055_MODEL;
1333                 dev->board.range = &vmk8055_range;
1334                 dev->board.ai_chans = 2;
1335                 dev->board.ai_bits = 8;
1336                 dev->board.ao_chans = 2;
1337                 dev->board.ao_bits = 8;
1338                 dev->board.di_chans = 5;
1339                 dev->board.di_bits = 1;
1340                 dev->board.do_chans = 8;
1341                 dev->board.do_bits = 1;
1342                 dev->board.cnt_chans = 2;
1343                 dev->board.cnt_bits = 16;
1344                 dev->board.pwm_chans = 0;
1345                 dev->board.pwm_bits = 0;
1346                 break;
1347         case DEVICE_VMK8061:
1348                 dev->board.name = "K8061 (VM140)";
1349                 dev->board.model = VMK8061_MODEL;
1350                 dev->board.range = &vmk8061_range;
1351                 dev->board.ai_chans = 8;
1352                 dev->board.ai_bits = 10;
1353                 dev->board.ao_chans = 8;
1354                 dev->board.ao_bits = 8;
1355                 dev->board.di_chans = 8;
1356                 dev->board.di_bits = 1;
1357                 dev->board.do_chans = 8;
1358                 dev->board.do_bits = 1;
1359                 dev->board.cnt_chans = 2;
1360                 dev->board.cnt_bits = 0;
1361                 dev->board.pwm_chans = 1;
1362                 dev->board.pwm_bits = 10;
1363                 break;
1364         }
1365
1366         if (dev->board.model == VMK8061_MODEL) {
1367                 vmk80xx_read_eeprom(dev, IC3_VERSION);
1368                 dev_info(&intf->dev, "%s\n", dev->fw.ic3_vers);
1369
1370                 if (vmk80xx_check_data_link(dev)) {
1371                         vmk80xx_read_eeprom(dev, IC6_VERSION);
1372                         dev_info(&intf->dev, "%s\n", dev->fw.ic6_vers);
1373                 } else {
1374                         dbgcm("comedi#: vmk80xx: no conn. to CPU\n");
1375                 }
1376         }
1377
1378         if (dev->board.model == VMK8055_MODEL)
1379                 vmk80xx_reset_device(dev);
1380
1381         dev->probed = 1;
1382
1383         dev_info(&intf->dev, "board #%d [%s] now attached\n",
1384                  dev->count, dev->board.name);
1385
1386         mutex_unlock(&glb_mutex);
1387
1388         comedi_usb_auto_config(intf, &vmk80xx_driver);
1389
1390         return 0;
1391 error:
1392         mutex_unlock(&glb_mutex);
1393
1394         return -ENODEV;
1395 }
1396
1397 static void vmk80xx_usb_disconnect(struct usb_interface *intf)
1398 {
1399         comedi_usb_auto_unconfig(intf);
1400 }
1401
1402 static const struct usb_device_id vmk80xx_usb_id_table[] = {
1403         { USB_DEVICE(0x10cf, 0x5500), .driver_info = DEVICE_VMK8055 },
1404         { USB_DEVICE(0x10cf, 0x5501), .driver_info = DEVICE_VMK8055 },
1405         { USB_DEVICE(0x10cf, 0x5502), .driver_info = DEVICE_VMK8055 },
1406         { USB_DEVICE(0x10cf, 0x5503), .driver_info = DEVICE_VMK8055 },
1407         { USB_DEVICE(0x10cf, 0x8061), .driver_info = DEVICE_VMK8061 },
1408         { USB_DEVICE(0x10cf, 0x8062), .driver_info = DEVICE_VMK8061 },
1409         { USB_DEVICE(0x10cf, 0x8063), .driver_info = DEVICE_VMK8061 },
1410         { USB_DEVICE(0x10cf, 0x8064), .driver_info = DEVICE_VMK8061 },
1411         { USB_DEVICE(0x10cf, 0x8065), .driver_info = DEVICE_VMK8061 },
1412         { USB_DEVICE(0x10cf, 0x8066), .driver_info = DEVICE_VMK8061 },
1413         { USB_DEVICE(0x10cf, 0x8067), .driver_info = DEVICE_VMK8061 },
1414         { USB_DEVICE(0x10cf, 0x8068), .driver_info = DEVICE_VMK8061 },
1415         { }
1416 };
1417 MODULE_DEVICE_TABLE(usb, vmk80xx_usb_id_table);
1418
1419 /* TODO: Add support for suspend, resume, pre_reset,
1420  * post_reset and flush */
1421 static struct usb_driver vmk80xx_usb_driver = {
1422         .name           = "vmk80xx",
1423         .probe          = vmk80xx_usb_probe,
1424         .disconnect     = vmk80xx_usb_disconnect,
1425         .id_table       = vmk80xx_usb_id_table,
1426 };
1427 module_comedi_usb_driver(vmk80xx_driver, vmk80xx_usb_driver);
1428
1429 MODULE_AUTHOR("Manuel Gebele <forensixs@gmx.de>");
1430 MODULE_DESCRIPTION("Velleman USB Board Low-Level Driver");
1431 MODULE_SUPPORTED_DEVICE("K8055/K8061 aka VM110/VM140");
1432 MODULE_VERSION("0.8.01");
1433 MODULE_LICENSE("GPL");