drivers/staging/comedi/drivers/usbduxfast.c

   1 /*
   2  *  Copyright (C) 2004 Bernd Porr, Bernd.Porr@f2s.com
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 /*
  20  * I must give credit here to Chris Baugher who
  21  * wrote the driver for AT-MIO-16d. I used some parts of this
  22  * driver. I also must give credits to David Brownell
  23  * who supported me with the USB development.
  24  *
  25  * Bernd Porr
  26  *
  27  *
  28  * Revision history:
  29  * 0.9: Dropping the first data packet which seems to be from the last transfer.
  30  *      Buffer overflows in the FX2 are handed over to comedi.
  31  * 0.92: Dropping now 4 packets. The quad buffer has to be emptied.
  32  *       Added insn command basically for testing. Sample rate is
  33  *       1MHz/16ch=62.5kHz
  34  * 0.99: Ian Abbott pointed out a bug which has been corrected. Thanks!
  35  * 0.99a: added external trigger.
  36  * 1.00: added firmware kernel request to the driver which fixed
  37  *       udev coldplug problem
  38  */
  39
  40 #include <linux/kernel.h>
  41 #include <linux/firmware.h>
  42 #include <linux/module.h>
  43 #include <linux/init.h>
  44 #include <linux/slab.h>
  45 #include <linux/input.h>
  46 #include <linux/usb.h>
  47 #include <linux/smp_lock.h>
  48 #include <linux/fcntl.h>
  49 #include <linux/compiler.h>
  50 #include "comedi_fc.h"
  51 #include "../comedidev.h"
  52
  53
  54 #define DRIVER_VERSION "v1.0"
  55 #define DRIVER_AUTHOR "Bernd Porr, BerndPorr@f2s.com"
  56 #define DRIVER_DESC "USB-DUXfast, BerndPorr@f2s.com"
  57 #define BOARDNAME "usbduxfast"
  58
  59 /*
  60  * timeout for the USB-transfer
  61  */
  62 #define EZTIMEOUT       30
  63
  64 /*
  65  * constants for "firmware" upload and download
  66  */
  67 #define USBDUXFASTSUB_FIRMWARE  0xA0
  68 #define VENDOR_DIR_IN           0xC0
  69 #define VENDOR_DIR_OUT          0x40
  70
  71 /*
  72  * internal adresses of the 8051 processor
  73  */
  74 #define USBDUXFASTSUB_CPUCS     0xE600
  75
  76 /*
  77  * max lenghth of the transfer-buffer for software upload
  78  */
  79 #define TB_LEN  0x2000
  80
  81 /*
  82  * input endpoint number
  83  */
  84 #define BULKINEP        6
  85
  86 /*
  87  * endpoint for the A/D channellist: bulk OUT
  88  */
  89 #define CHANNELLISTEP   4
  90
  91 /*
  92  * number of channels
  93  */
  94 #define NUMCHANNELS     32
  95
  96 /*
  97  * size of the waveform descriptor
  98  */
  99 #define WAVESIZE        0x20
 100
 101 /*
 102  * size of one A/D value
 103  */
 104 #define SIZEADIN        (sizeof(int16_t))
 105
 106 /*
 107  * size of the input-buffer IN BYTES
 108  */
 109 #define SIZEINBUF       512
 110
 111 /*
 112  * 16 bytes
 113  */
 114 #define SIZEINSNBUF     512
 115
 116 /*
 117  * size of the buffer for the dux commands in bytes
 118  */
 119 #define SIZEOFDUXBUFFER 256
 120
 121 /*
 122  * number of in-URBs which receive the data: min=5
 123  */
 124 #define NUMOFINBUFFERSHIGH      10
 125
 126 /*
 127  * total number of usbduxfast devices
 128  */
 129 #define NUMUSBDUXFAST   16
 130
 131 /*
 132  * number of subdevices
 133  */
 134 #define N_SUBDEVICES    1
 135
 136 /*
 137  * analogue in subdevice
 138  */
 139 #define SUBDEV_AD       0
 140
 141 /*
 142  * min delay steps for more than one channel
 143  * basically when the mux gives up ;-)
 144  *
 145  * steps at 30MHz in the FX2
 146  */
 147 #define MIN_SAMPLING_PERIOD     9
 148
 149 /*
 150  * max number of 1/30MHz delay steps
 151  */
 152 #define MAX_SAMPLING_PERIOD     500
 153
 154 /*
 155  * number of received packets to ignore before we start handing data
 156  * over to comedi, it's quad buffering and we have to ignore 4 packets
 157  */
 158 #define PACKETS_TO_IGNORE       4
 159
 160 /*
 161  * comedi constants
 162  */
 163 static const comedi_lrange range_usbduxfast_ai_range = {
 164         2, { BIP_RANGE(0.75), BIP_RANGE(0.5) }
 165 };
 166
 167 /*
 168  * private structure of one subdevice
 169  *
 170  * this is the structure which holds all the data of this driver
 171  * one sub device just now: A/D
 172  */
 173 struct usbduxfastsub_s {
 174         int attached;                   /* is attached? */
 175         int probed;                     /* is it associated with a subdevice? */
 176         struct usb_device *usbdev;      /* pointer to the usb-device */
 177         struct urb *urbIn;              /* BULK-transfer handling: urb */
 178         int8_t *transfer_buffer;
 179         int16_t *insnBuffer;            /* input buffer for single insn */
 180         int ifnum;                      /* interface number */
 181         struct usb_interface *interface;        /* interface structure */
 182         struct comedi_device *comedidev;        /* comedi device for the interrupt
 183                                            context */
 184         short int ai_cmd_running;       /* asynchronous command is running */
 185         short int ai_continous;         /* continous aquisition */
 186         long int ai_sample_count;       /* number of samples to aquire */
 187         uint8_t *dux_commands;          /* commands */
 188         int ignore;                     /* counter which ignores the first
 189                                            buffers */
 190         struct semaphore sem;
 191 };
 192
 193 /*
 194  * The pointer to the private usb-data of the driver
 195  * is also the private data for the comedi-device.
 196  * This has to be global as the usb subsystem needs
 197  * global variables. The other reason is that this
 198  * structure must be there _before_ any comedi
 199  * command is issued. The usb subsystem must be
 200  * initialised before comedi can access it.
 201  */
 202 static struct usbduxfastsub_s usbduxfastsub[NUMUSBDUXFAST];
 203
 204 static DECLARE_MUTEX(start_stop_sem);
 205
 206 /*
 207  * bulk transfers to usbduxfast
 208  */
 209 #define SENDADCOMMANDS            0
 210 #define SENDINITEP6               1
 211
 212 static int send_dux_commands(struct usbduxfastsub_s *udfs, int cmd_type)
 213 {
 214         int tmp, nsent;
 215
 216         udfs->dux_commands[0] = cmd_type;
 217
 218 #ifdef CONFIG_COMEDI_DEBUG
 219         printk(KERN_DEBUG "comedi%d: usbduxfast: dux_commands: ",
 220                 udfs->comedidev->minor);
 221         for (tmp = 0; tmp < SIZEOFDUXBUFFER; tmp++)
 222                 printk(" %02x", udfs->dux_commands[tmp]);
 223         printk("\n");
 224 #endif
 225
 226         tmp = usb_bulk_msg(udfs->usbdev,
 227                            usb_sndbulkpipe(udfs->usbdev, CHANNELLISTEP),
 228                            udfs->dux_commands, SIZEOFDUXBUFFER, &nsent, 10000);
 229         if (tmp < 0)
 230                 printk(KERN_ERR "comedi%d: could not transmit dux_commands to"
 231                       "the usb-device, err=%d\n", udfs->comedidev->minor, tmp);
 232         return tmp;
 233 }
 234
 235 /*
 236  * Stops the data acquision.
 237  * It should be safe to call this function from any context.
 238  */
 239 static int usbduxfastsub_unlink_InURBs(struct usbduxfastsub_s *udfs)
 240 {
 241         int j = 0;
 242         int err = 0;
 243
 244         if (udfs && udfs->urbIn) {
 245                 udfs->ai_cmd_running = 0;
 246                 /* waits until a running transfer is over */
 247                 usb_kill_urb(udfs->urbIn);
 248                 j = 0;
 249         }
 250 #ifdef CONFIG_COMEDI_DEBUG
 251         printk(KERN_DEBUG "comedi: usbduxfast: unlinked InURB: res=%d\n", j);
 252 #endif
 253         return err;
 254 }
 255
 256 /*
 257  * This will stop a running acquisition operation.
 258  * Is called from within this driver from both the
 259  * interrupt context and from comedi.
 260  */
 261 static int usbduxfast_ai_stop(struct usbduxfastsub_s *udfs,
 262         int do_unlink)
 263 {
 264         int ret = 0;
 265
 266         if (!udfs) {
 267                 printk(KERN_ERR "comedi?: usbduxfast_ai_stop: udfs=NULL!\n");
 268                 return -EFAULT;
 269         }
 270
 271 #ifdef CONFIG_COMEDI_DEBUG
 272         printk(KERN_DEBUG "comedi: usbduxfast_ai_stop\n");
 273 #endif
 274
 275         udfs->ai_cmd_running = 0;
 276
 277         if (do_unlink)
 278                 ret = usbduxfastsub_unlink_InURBs(udfs); /* stop aquistion */
 279
 280         return ret;
 281 }
 282
 283 /*
 284  * This will cancel a running acquisition operation.
 285  * This is called by comedi but never from inside the driver.
 286  */
 287 static int usbduxfast_ai_cancel(struct comedi_device *dev, comedi_subdevice *s)
 288 {
 289         struct usbduxfastsub_s *udfs;
 290         int ret;
 291
 292         /* force unlink of all urbs */
 293 #ifdef CONFIG_COMEDI_DEBUG
 294         printk(KERN_DEBUG "comedi: usbduxfast_ai_cancel\n");
 295 #endif
 296         udfs = dev->private;
 297         if (!udfs) {
 298                 printk(KERN_ERR "comedi: usbduxfast_ai_cancel: udfs=NULL\n");
 299                 return -EFAULT;
 300         }
 301         down(&udfs->sem);
 302         if (!udfs->probed) {
 303                 up(&udfs->sem);
 304                 return -ENODEV;
 305         }
 306         /* unlink */
 307         ret = usbduxfast_ai_stop(udfs, 1);
 308         up(&udfs->sem);
 309
 310         return ret;
 311 }
 312
 313 /*
 314  * analogue IN
 315  * interrupt service routine
 316  */
 317 static void usbduxfastsub_ai_Irq(struct urb *urb PT_REGS_ARG)
 318 {
 319         int n, err;
 320         struct usbduxfastsub_s *udfs;
 321         struct comedi_device *this_comedidev;
 322         comedi_subdevice *s;
 323         uint16_t *p;
 324
 325         /* sanity checks - is the urb there? */
 326         if (!urb) {
 327                 printk(KERN_ERR "comedi_: usbduxfast_: ao int-handler called "
 328                        "with urb=NULL!\n");
 329                 return;
 330         }
 331         /* the context variable points to the subdevice */
 332         this_comedidev = urb->context;
 333         if (!this_comedidev) {
 334                 printk(KERN_ERR "comedi_: usbduxfast_: urb context is a NULL "
 335                        "pointer!\n");
 336                 return;
 337         }
 338         /* the private structure of the subdevice is usbduxfastsub_s */
 339         udfs = this_comedidev->private;
 340         if (!udfs) {
 341                 printk(KERN_ERR "comedi_: usbduxfast_: private of comedi "
 342                        "subdev is a NULL pointer!\n");
 343                 return;
 344         }
 345         /* are we running a command? */
 346         if (unlikely(!udfs->ai_cmd_running)) {
 347                 /*
 348                  * not running a command
 349                  * do not continue execution if no asynchronous command
 350                  * is running in particular not resubmit
 351                  */
 352                 return;
 353         }
 354
 355         if (unlikely(!udfs->attached)) {
 356                 /* no comedi device there */
 357                 return;
 358         }
 359         /* subdevice which is the AD converter */
 360         s = this_comedidev->subdevices + SUBDEV_AD;
 361
 362         /* first we test if something unusual has just happened */
 363         switch (urb->status) {
 364         case 0:
 365                 break;
 366
 367                 /*
 368                  * happens after an unlink command or when the device
 369                  * is plugged out
 370                  */
 371         case -ECONNRESET:
 372         case -ENOENT:
 373         case -ESHUTDOWN:
 374         case -ECONNABORTED:
 375                 /* tell this comedi */
 376                 s->async->events |= COMEDI_CB_EOA;
 377                 s->async->events |= COMEDI_CB_ERROR;
 378                 comedi_event(udfs->comedidev, s);
 379                 /* stop the transfer w/o unlink */
 380                 usbduxfast_ai_stop(udfs, 0);
 381                 return;
 382
 383         default:
 384                 printk("comedi%d: usbduxfast: non-zero urb status received in "
 385                        "ai intr context: %d\n",
 386                        udfs->comedidev->minor, urb->status);
 387                 s->async->events |= COMEDI_CB_EOA;
 388                 s->async->events |= COMEDI_CB_ERROR;
 389                 comedi_event(udfs->comedidev, s);
 390                 usbduxfast_ai_stop(udfs, 0);
 391                 return;
 392         }
 393
 394         p = urb->transfer_buffer;
 395         if (!udfs->ignore) {
 396                 if (!udfs->ai_continous) {
 397                         /* not continous, fixed number of samples */
 398                         n = urb->actual_length / sizeof(uint16_t);
 399                         if (unlikely(udfs->ai_sample_count < n)) {
 400                                 /*
 401                                  * we have send only a fraction of the bytes
 402                                  * received
 403                                  */
 404                                 cfc_write_array_to_buffer(s,
 405                                         urb->transfer_buffer,
 406                                         udfs->ai_sample_count
 407                                         * sizeof(uint16_t));
 408                                 usbduxfast_ai_stop(udfs, 0);
 409                                 /* say comedi that the acquistion is over */
 410                                 s->async->events |= COMEDI_CB_EOA;
 411                                 comedi_event(udfs->comedidev, s);
 412                                 return;
 413                         }
 414                         udfs->ai_sample_count -= n;
 415                 }
 416                 /* write the full buffer to comedi */
 417                 cfc_write_array_to_buffer(s, urb->transfer_buffer,
 418                                           urb->actual_length);
 419
 420                 /* tell comedi that data is there */
 421                 comedi_event(udfs->comedidev, s);
 422
 423         } else {
 424                 /* ignore this packet */
 425                 udfs->ignore--;
 426         }
 427
 428         /*
 429          * command is still running
 430          * resubmit urb for BULK transfer
 431          */
 432         urb->dev = udfs->usbdev;
 433         urb->status = 0;
 434         err = usb_submit_urb(urb, GFP_ATOMIC);
 435         if (err < 0) {
 436                 printk(KERN_ERR "comedi%d: usbduxfast: urb resubm failed: %d",
 437                         udfs->comedidev->minor, err);
 438                 s->async->events |= COMEDI_CB_EOA;
 439                 s->async->events |= COMEDI_CB_ERROR;
 440                 comedi_event(udfs->comedidev, s);
 441                 usbduxfast_ai_stop(udfs, 0);
 442         }
 443 }
 444
 445 static int usbduxfastsub_start(struct usbduxfastsub_s *udfs)
 446 {
 447         int ret;
 448         unsigned char local_transfer_buffer[16];
 449
 450         /* 7f92 to zero */
 451         local_transfer_buffer[0] = 0;
 452         ret = usb_control_msg(udfs->usbdev,
 453                 usb_sndctrlpipe(udfs->usbdev, 0),
 454                 USBDUXFASTSUB_FIRMWARE, /* bRequest, "Firmware" */
 455                 VENDOR_DIR_OUT,         /* bmRequestType */
 456                 USBDUXFASTSUB_CPUCS,    /* Value */
 457                 0x0000,                 /* Index */
 458                 local_transfer_buffer,  /* address of the transfer buffer */
 459                 1,                      /* Length */
 460                 EZTIMEOUT);             /* Timeout */
 461         if (ret < 0) {
 462                 printk("comedi_: usbduxfast_: control msg failed (start)\n");
 463                 return ret;
 464         }
 465
 466         return 0;
 467 }
 468
 469 static int usbduxfastsub_stop(struct usbduxfastsub_s *udfs)
 470 {
 471         int ret;
 472         unsigned char local_transfer_buffer[16];
 473
 474         /* 7f92 to one */
 475         local_transfer_buffer[0] = 1;
 476         ret = usb_control_msg(udfs->usbdev,
 477                 usb_sndctrlpipe(udfs->usbdev, 0),
 478                 USBDUXFASTSUB_FIRMWARE, /* bRequest, "Firmware" */
 479                 VENDOR_DIR_OUT,         /* bmRequestType */
 480                 USBDUXFASTSUB_CPUCS,    /* Value */
 481                 0x0000,                 /* Index */
 482                 local_transfer_buffer,
 483                 1,                      /* Length */
 484                 EZTIMEOUT);             /* Timeout */
 485         if (ret < 0) {
 486                 printk(KERN_ERR "comedi_: usbduxfast: control msg failed "
 487                        "(stop)\n");
 488                 return ret;
 489         }
 490
 491         return 0;
 492 }
 493
 494 static int usbduxfastsub_upload(struct usbduxfastsub_s *udfs,
 495         unsigned char *local_transfer_buffer,
 496         unsigned int startAddr, unsigned int len)
 497 {
 498         int ret;
 499
 500 #ifdef CONFIG_COMEDI_DEBUG
 501         printk(KERN_DEBUG "comedi: usbduxfast: uploading %d bytes", len);
 502         printk(KERN_DEBUG " to addr %d, first byte=%d.\n",
 503                 startAddr, local_transfer_buffer[0]);
 504 #endif
 505         ret = usb_control_msg(udfs->usbdev,
 506                 usb_sndctrlpipe(udfs->usbdev, 0),
 507                 USBDUXFASTSUB_FIRMWARE, /* brequest, firmware */
 508                 VENDOR_DIR_OUT,         /* bmRequestType */
 509                 startAddr,              /* value */
 510                 0x0000,                 /* index */
 511                 local_transfer_buffer,  /* our local safe buffer */
 512                 len,                    /* length */
 513                 EZTIMEOUT);             /* timeout */
 514
 515 #ifdef CONFIG_COMEDI_DEBUG
 516         printk(KERN_DEBUG "comedi_: usbduxfast: result=%d\n", ret);
 517 #endif
 518
 519         if (ret < 0) {
 520                 printk(KERN_ERR "comedi_: usbduxfast: uppload failed\n");
 521                 return ret;
 522         }
 523
 524         return 0;
 525 }
 526
 527 int firmwareUpload(struct usbduxfastsub_s *udfs, unsigned char *firmwareBinary,
 528                    int sizeFirmware)
 529 {
 530         int ret;
 531
 532         if (!firmwareBinary)
 533                 return 0;
 534
 535         ret = usbduxfastsub_stop(udfs);
 536         if (ret < 0) {
 537                 printk(KERN_ERR "comedi_: usbduxfast: can not stop firmware\n");
 538                 return ret;
 539         }
 540         ret = usbduxfastsub_upload(udfs, firmwareBinary, 0, sizeFirmware);
 541         if (ret < 0) {
 542                 printk(KERN_ERR "comedi_: usbduxfast: firmware upload failed\n");
 543                 return ret;
 544         }
 545         ret = usbduxfastsub_start(udfs);
 546         if (ret < 0) {
 547                 printk(KERN_ERR "comedi_: usbduxfast: can not start firmware\n");
 548                 return ret;
 549         }
 550
 551         return 0;
 552 }
 553
 554 int usbduxfastsub_submit_InURBs(struct usbduxfastsub_s *udfs)
 555 {
 556         int ret;
 557
 558         if (!udfs)
 559                 return -EFAULT;
 560
 561         usb_fill_bulk_urb(udfs->urbIn, udfs->usbdev,
 562                           usb_rcvbulkpipe(udfs->usbdev, BULKINEP),
 563                           udfs->transfer_buffer,
 564                           SIZEINBUF, usbduxfastsub_ai_Irq, udfs->comedidev);
 565
 566 #ifdef CONFIG_COMEDI_DEBUG
 567         printk(KERN_DEBUG "comedi%d: usbduxfast: submitting in-urb: "
 568                "0x%p,0x%p\n", udfs->comedidev->minor, udfs->urbIn->context,
 569                 udfs->urbIn->dev);
 570 #endif
 571         ret = usb_submit_urb(udfs->urbIn, GFP_ATOMIC);
 572         if (ret) {
 573                 printk(KERN_ERR "comedi_: usbduxfast: ai: usb_submit_urb error"
 574                        " %d\n", ret);
 575                 return ret;
 576         }
 577         return 0;
 578 }
 579
 580 static int usbduxfast_ai_cmdtest(struct comedi_device *dev,
 581         comedi_subdevice *s, comedi_cmd *cmd)
 582 {
 583         int err = 0, stop_mask = 0;
 584         long int steps, tmp;
 585         int minSamplPer;
 586         struct usbduxfastsub_s *udfs = dev->private;
 587
 588         if (!udfs->probed)
 589                 return -ENODEV;
 590
 591 #ifdef CONFIG_COMEDI_DEBUG
 592         printk(KERN_DEBUG "comedi%d: usbduxfast_ai_cmdtest\n", dev->minor);
 593         printk(KERN_DEBUG "comedi%d: usbduxfast: convert_arg=%u "
 594                "scan_begin_arg=%u\n",
 595                dev->minor, cmd->convert_arg, cmd->scan_begin_arg);
 596 #endif
 597         /* step 1: make sure trigger sources are trivially valid */
 598
 599         tmp = cmd->start_src;
 600         cmd->start_src &= TRIG_NOW | TRIG_EXT | TRIG_INT;
 601         if (!cmd->start_src || tmp != cmd->start_src)
 602                 err++;
 603
 604         tmp = cmd->scan_begin_src;
 605         cmd->scan_begin_src &= TRIG_TIMER | TRIG_FOLLOW | TRIG_EXT;
 606         if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
 607                 err++;
 608
 609         tmp = cmd->convert_src;
 610         cmd->convert_src &= TRIG_TIMER | TRIG_EXT;
 611         if (!cmd->convert_src || tmp != cmd->convert_src)
 612                 err++;
 613
 614         tmp = cmd->scan_end_src;
 615         cmd->scan_end_src &= TRIG_COUNT;
 616         if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
 617                 err++;
 618
 619         tmp = cmd->stop_src;
 620         stop_mask = TRIG_COUNT | TRIG_NONE;
 621         cmd->stop_src &= stop_mask;
 622         if (!cmd->stop_src || tmp != cmd->stop_src)
 623                 err++;
 624
 625         if (err)
 626                 return 1;
 627
 628         /*
 629          * step 2: make sure trigger sources are unique and mutually compatible
 630          */
 631
 632         if (cmd->start_src != TRIG_NOW &&
 633                 cmd->start_src != TRIG_EXT && cmd->start_src != TRIG_INT)
 634                 err++;
 635         if (cmd->scan_begin_src != TRIG_TIMER &&
 636                 cmd->scan_begin_src != TRIG_FOLLOW &&
 637                 cmd->scan_begin_src != TRIG_EXT)
 638                 err++;
 639         if (cmd->convert_src != TRIG_TIMER && cmd->convert_src != TRIG_EXT)
 640                 err++;
 641         if (cmd->stop_src != TRIG_COUNT &&
 642                 cmd->stop_src != TRIG_EXT && cmd->stop_src != TRIG_NONE)
 643                 err++;
 644
 645         /* can't have external stop and start triggers at once */
 646         if (cmd->start_src == TRIG_EXT && cmd->stop_src == TRIG_EXT)
 647                 err++;
 648
 649         if (err)
 650                 return 2;
 651
 652         /* step 3: make sure arguments are trivially compatible */
 653
 654         if (cmd->start_src == TRIG_NOW && cmd->start_arg != 0) {
 655                 cmd->start_arg = 0;
 656                 err++;
 657         }
 658
 659         if (!cmd->chanlist_len)
 660                 err++;
 661
 662         if (cmd->scan_end_arg != cmd->chanlist_len) {
 663                 cmd->scan_end_arg = cmd->chanlist_len;
 664                 err++;
 665         }
 666
 667         if (cmd->chanlist_len == 1)
 668                 minSamplPer = 1;
 669         else
 670                 minSamplPer = MIN_SAMPLING_PERIOD;
 671
 672         if (cmd->convert_src == TRIG_TIMER) {
 673                 steps = cmd->convert_arg * 30;
 674                 if (steps < (minSamplPer * 1000))
 675                         steps = minSamplPer * 1000;
 676
 677                 if (steps > (MAX_SAMPLING_PERIOD * 1000))
 678                         steps = MAX_SAMPLING_PERIOD * 1000;
 679
 680                 /* calc arg again */
 681                 tmp = steps / 30;
 682                 if (cmd->convert_arg != tmp) {
 683                         cmd->convert_arg = tmp;
 684                         err++;
 685                 }
 686         }
 687
 688         if (cmd->scan_begin_src == TRIG_TIMER)
 689                 err++;
 690
 691         /* stop source */
 692         switch (cmd->stop_src) {
 693         case TRIG_COUNT:
 694                 if (!cmd->stop_arg) {
 695                         cmd->stop_arg = 1;
 696                         err++;
 697                 }
 698                 break;
 699         case TRIG_NONE:
 700                 if (cmd->stop_arg != 0) {
 701                         cmd->stop_arg = 0;
 702                         err++;
 703                 }
 704                 break;
 705                 /*
 706                  * TRIG_EXT doesn't care since it doesn't trigger
 707                  * off a numbered channel
 708                  */
 709         default:
 710                 break;
 711         }
 712
 713         if (err)
 714                 return 3;
 715
 716         /* step 4: fix up any arguments */
 717
 718         return 0;
 719
 720 }
 721
 722 static int usbduxfast_ai_inttrig(struct comedi_device *dev,
 723         comedi_subdevice *s, unsigned int trignum)
 724 {
 725         int ret;
 726         struct usbduxfastsub_s *udfs = dev->private;
 727
 728         if (!udfs)
 729                 return -EFAULT;
 730
 731         down(&udfs->sem);
 732         if (!udfs->probed) {
 733                 up(&udfs->sem);
 734                 return -ENODEV;
 735         }
 736 #ifdef CONFIG_COMEDI_DEBUG
 737         printk(KERN_DEBUG "comedi%d: usbduxfast_ai_inttrig\n", dev->minor);
 738 #endif
 739
 740         if (trignum != 0) {
 741                 printk(KERN_ERR "comedi%d: usbduxfast_ai_inttrig: invalid"
 742                        " trignum\n", dev->minor);
 743                 up(&udfs->sem);
 744                 return -EINVAL;
 745         }
 746         if (!udfs->ai_cmd_running) {
 747                 udfs->ai_cmd_running = 1;
 748                 ret = usbduxfastsub_submit_InURBs(udfs);
 749                 if (ret < 0) {
 750                         printk(KERN_ERR "comedi%d: usbduxfast_ai_inttrig: "
 751                                "urbSubmit: err=%d\n", dev->minor, ret);
 752                         udfs->ai_cmd_running = 0;
 753                         up(&udfs->sem);
 754                         return ret;
 755                 }
 756                 s->async->inttrig = NULL;
 757         } else {
 758                 printk(KERN_ERR "comedi%d: ai_inttrig but acqu is already"
 759                        " running\n", dev->minor);
 760         }
 761         up(&udfs->sem);
 762         return 1;
 763 }
 764
 765 /*
 766  * offsets for the GPIF bytes
 767  * the first byte is the command byte
 768  */
 769 #define LENBASE (1+0x00)
 770 #define OPBASE  (1+0x08)
 771 #define OUTBASE (1+0x10)
 772 #define LOGBASE (1+0x18)
 773
 774 static int usbduxfast_ai_cmd(struct comedi_device *dev, comedi_subdevice *s)
 775 {
 776         comedi_cmd *cmd = &s->async->cmd;
 777         unsigned int chan, gain, rngmask = 0xff;
 778         int i, j, ret;
 779         struct usbduxfastsub_s *udfs;
 780         int result;
 781         long steps, steps_tmp;
 782
 783 #ifdef CONFIG_COMEDI_DEBUG
 784         printk(KERN_DEBUG "comedi%d: usbduxfast_ai_cmd\n", dev->minor);
 785 #endif
 786         udfs = dev->private;
 787         if (!udfs)
 788                 return -EFAULT;
 789
 790         down(&udfs->sem);
 791         if (!udfs->probed) {
 792                 up(&udfs->sem);
 793                 return -ENODEV;
 794         }
 795         if (udfs->ai_cmd_running) {
 796                 printk(KERN_ERR "comedi%d: ai_cmd not possible. Another ai_cmd"
 797                        " is running.\n", dev->minor);
 798                 up(&udfs->sem);
 799                 return -EBUSY;
 800         }
 801         /* set current channel of the running aquisition to zero */
 802         s->async->cur_chan = 0;
 803
 804         /*
 805          * ignore the first buffers from the device if there
 806          * is an error condition
 807          */
 808         udfs->ignore = PACKETS_TO_IGNORE;
 809
 810         if (cmd->chanlist_len > 0) {
 811                 gain = CR_RANGE(cmd->chanlist[0]);
 812                 for (i = 0; i < cmd->chanlist_len; ++i) {
 813                         chan = CR_CHAN(cmd->chanlist[i]);
 814                         if (chan != i) {
 815                                 printk(KERN_ERR "comedi%d: cmd is accepting "
 816                                        "only consecutive channels.\n",
 817                                        dev->minor);
 818                                 up(&udfs->sem);
 819                                 return -EINVAL;
 820                         }
 821                         if ((gain != CR_RANGE(cmd->chanlist[i]))
 822                                 && (cmd->chanlist_len > 3)) {
 823                                 printk(KERN_ERR "comedi%d: the gain must be"
 824                                        " the same for all channels.\n",
 825                                        dev->minor);
 826                                 up(&udfs->sem);
 827                                 return -EINVAL;
 828                         }
 829                         if (i >= NUMCHANNELS) {
 830                                 printk(KERN_ERR "comedi%d: channel list too"
 831                                        " long\n", dev->minor);
 832                                 break;
 833                         }
 834                 }
 835         }
 836         steps = 0;
 837         if (cmd->scan_begin_src == TRIG_TIMER) {
 838                 printk(KERN_ERR "comedi%d: usbduxfast: "
 839                        "scan_begin_src==TRIG_TIMER not valid.\n", dev->minor);
 840                 up(&udfs->sem);
 841                 return -EINVAL;
 842         }
 843         if (cmd->convert_src == TRIG_TIMER)
 844                 steps = (cmd->convert_arg * 30) / 1000;
 845
 846         if ((steps < MIN_SAMPLING_PERIOD) && (cmd->chanlist_len != 1)) {
 847                 printk(KERN_ERR "comedi%d: usbduxfast: ai_cmd: steps=%ld, "
 848                        "scan_begin_arg=%d. Not properly tested by cmdtest?\n",
 849                        dev->minor, steps, cmd->scan_begin_arg);
 850                 up(&udfs->sem);
 851                 return -EINVAL;
 852         }
 853         if (steps > MAX_SAMPLING_PERIOD) {
 854                 printk(KERN_ERR "comedi%d: usbduxfast: ai_cmd: sampling rate "
 855                        "too low.\n", dev->minor);
 856                 up(&udfs->sem);
 857                 return -EINVAL;
 858         }
 859         if ((cmd->start_src == TRIG_EXT) && (cmd->chanlist_len != 1)
 860                 && (cmd->chanlist_len != 16)) {
 861                 printk(KERN_ERR "comedi%d: usbduxfast: ai_cmd: TRIG_EXT only"
 862                        " with 1 or 16 channels possible.\n", dev->minor);
 863                 up(&udfs->sem);
 864                 return -EINVAL;
 865         }
 866 #ifdef CONFIG_COMEDI_DEBUG
 867         printk(KERN_DEBUG "comedi%d: usbduxfast: steps=%ld, convert_arg=%u\n",
 868                dev->minor, steps, cmd->convert_arg);
 869 #endif
 870
 871         switch (cmd->chanlist_len) {
 872         case 1:
 873                 /*
 874                  * one channel
 875                  */
 876
 877                 if (CR_RANGE(cmd->chanlist[0]) > 0)
 878                         rngmask = 0xff - 0x04;
 879                 else
 880                         rngmask = 0xff;
 881
 882                 /*
 883                  * for external trigger: looping in this state until
 884                  * the RDY0 pin becomes zero
 885                  */
 886
 887                 /* we loop here until ready has been set */
 888                 if (cmd->start_src == TRIG_EXT) {
 889                         /* branch back to state 0 */
 890                         udfs->dux_commands[LENBASE+0] = 0x01;
 891                         /* deceision state w/o data */
 892                         udfs->dux_commands[OPBASE+0] = 0x01;
 893                         udfs->dux_commands[OUTBASE+0] = 0xFF & rngmask;
 894                         /* RDY0 = 0 */
 895                         udfs->dux_commands[LOGBASE+0] = 0x00;
 896                 } else {        /* we just proceed to state 1 */
 897                         udfs->dux_commands[LENBASE+0] = 1;
 898                         udfs->dux_commands[OPBASE+0] = 0;
 899                         udfs->dux_commands[OUTBASE+0] = 0xFF & rngmask;
 900                         udfs->dux_commands[LOGBASE+0] = 0;
 901                 }
 902
 903                 if (steps < MIN_SAMPLING_PERIOD) {
 904                         /* for fast single channel aqu without mux */
 905                         if (steps <= 1) {
 906                                 /*
 907                                  * we just stay here at state 1 and rexecute
 908                                  * the same state this gives us 30MHz sampling
 909                                  * rate
 910                                  */
 911
 912                                 /* branch back to state 1 */
 913                                 udfs->dux_commands[LENBASE+1] = 0x89;
 914                                 /* deceision state with data */
 915                                 udfs->dux_commands[OPBASE+1] = 0x03;
 916                                 udfs->dux_commands[OUTBASE+1] = 0xFF & rngmask;
 917                                 /* doesn't matter */
 918                                 udfs->dux_commands[LOGBASE+1] = 0xFF;
 919                         } else {
 920                                 /*
 921                                  * we loop through two states: data and delay
 922                                  * max rate is 15MHz
 923                                  */
 924                                 udfs->dux_commands[LENBASE+1] = steps - 1;
 925                                 /* data */
 926                                 udfs->dux_commands[OPBASE+1] = 0x02;
 927                                 udfs->dux_commands[OUTBASE+1] = 0xFF & rngmask;
 928                                 /* doesn't matter */
 929                                 udfs->dux_commands[LOGBASE+1] = 0;
 930                                 /* branch back to state 1 */
 931                                 udfs->dux_commands[LENBASE+2] = 0x09;
 932                                 /* deceision state w/o data */
 933                                 udfs->dux_commands[OPBASE+2] = 0x01;
 934                                 udfs->dux_commands[OUTBASE+2] = 0xFF & rngmask;
 935                                 /* doesn't matter */
 936                                 udfs->dux_commands[LOGBASE+2] = 0xFF;
 937                         }
 938                 } else {
 939                         /*
 940                          * we loop through 3 states: 2x delay and 1x data
 941                          * this gives a min sampling rate of 60kHz
 942                          */
 943
 944                         /* we have 1 state with duration 1 */
 945                         steps = steps - 1;
 946
 947                         /* do the first part of the delay */
 948                         udfs->dux_commands[LENBASE+1] = steps / 2;
 949                         udfs->dux_commands[OPBASE+1] = 0;
 950                         udfs->dux_commands[OUTBASE+1] = 0xFF & rngmask;
 951                         udfs->dux_commands[LOGBASE+1] = 0;
 952
 953                         /* and the second part */
 954                         udfs->dux_commands[LENBASE+2] = steps - steps / 2;
 955                         udfs->dux_commands[OPBASE+2] = 0;
 956                         udfs->dux_commands[OUTBASE+2] = 0xFF & rngmask;
 957                         udfs->dux_commands[LOGBASE+2] = 0;
 958
 959                         /* get the data and branch back */
 960
 961                         /* branch back to state 1 */
 962                         udfs->dux_commands[LENBASE+3] = 0x09;
 963                         /* deceision state w data */
 964                         udfs->dux_commands[OPBASE+3] = 0x03;
 965                         udfs->dux_commands[OUTBASE+3] = 0xFF & rngmask;
 966                         /* doesn't matter */
 967                         udfs->dux_commands[LOGBASE+3] = 0xFF;
 968                 }
 969                 break;
 970
 971         case 2:
 972                 /*
 973                  * two channels
 974                  * commit data to the FIFO
 975                  */
 976
 977                 if (CR_RANGE(cmd->chanlist[0]) > 0)
 978                         rngmask = 0xff - 0x04;
 979                 else
 980                         rngmask = 0xff;
 981
 982                 udfs->dux_commands[LENBASE+0] = 1;
 983                 /* data */
 984                 udfs->dux_commands[OPBASE+0] = 0x02;
 985                 udfs->dux_commands[OUTBASE+0] = 0xFF & rngmask;
 986                 udfs->dux_commands[LOGBASE+0] = 0;
 987
 988                 /* we have 1 state with duration 1: state 0 */
 989                 steps_tmp = steps - 1;
 990
 991                 if (CR_RANGE(cmd->chanlist[1]) > 0)
 992                         rngmask = 0xff - 0x04;
 993                 else
 994                         rngmask = 0xff;
 995
 996                 /* do the first part of the delay */
 997                 udfs->dux_commands[LENBASE+1] = steps_tmp / 2;
 998                 udfs->dux_commands[OPBASE+1] = 0;
 999                 /* count */
1000                 udfs->dux_commands[OUTBASE+1] = 0xFE & rngmask;
1001                 udfs->dux_commands[LOGBASE+1] = 0;
1002
1003                 /* and the second part */
1004                 udfs->dux_commands[LENBASE+2] = steps_tmp - steps_tmp / 2;
1005                 udfs->dux_commands[OPBASE+2] = 0;
1006                 udfs->dux_commands[OUTBASE+2] = 0xFF & rngmask;
1007                 udfs->dux_commands[LOGBASE+2] = 0;
1008
1009                 udfs->dux_commands[LENBASE+3] = 1;
1010                 /* data */
1011                 udfs->dux_commands[OPBASE+3] = 0x02;
1012                 udfs->dux_commands[OUTBASE+3] = 0xFF & rngmask;
1013                 udfs->dux_commands[LOGBASE+3] = 0;
1014
1015                 /*
1016                  * we have 2 states with duration 1: step 6 and
1017                  * the IDLE state
1018                  */
1019                 steps_tmp = steps - 2;
1020
1021                 if (CR_RANGE(cmd->chanlist[0]) > 0)
1022                         rngmask = 0xff - 0x04;
1023                 else
1024                         rngmask = 0xff;
1025
1026                 /* do the first part of the delay */
1027                 udfs->dux_commands[LENBASE+4] = steps_tmp / 2;
1028                 udfs->dux_commands[OPBASE+4] = 0;
1029                 /* reset */
1030                 udfs->dux_commands[OUTBASE+4] = (0xFF - 0x02) & rngmask;
1031                 udfs->dux_commands[LOGBASE+4] = 0;
1032
1033                 /* and the second part */
1034                 udfs->dux_commands[LENBASE+5] = steps_tmp - steps_tmp / 2;
1035                 udfs->dux_commands[OPBASE+5] = 0;
1036                 udfs->dux_commands[OUTBASE+5] = 0xFF & rngmask;
1037                 udfs->dux_commands[LOGBASE+5] = 0;
1038
1039                 udfs->dux_commands[LENBASE+6] = 1;
1040                 udfs->dux_commands[OPBASE+6] = 0;
1041                 udfs->dux_commands[OUTBASE+6] = 0xFF & rngmask;
1042                 udfs->dux_commands[LOGBASE+6] = 0;
1043                 break;
1044
1045         case 3:
1046                 /*
1047                  * three channels
1048                  */
1049                 for (j = 0; j < 1; j++) {
1050                         if (CR_RANGE(cmd->chanlist[j]) > 0)
1051                                 rngmask = 0xff - 0x04;
1052                         else
1053                                 rngmask = 0xff;
1054                         /*
1055                          * commit data to the FIFO and do the first part
1056                          * of the delay
1057                          */
1058                         udfs->dux_commands[LENBASE+j*2] = steps / 2;
1059                         /* data */
1060                         udfs->dux_commands[OPBASE+j*2] = 0x02;
1061                         /* no change */
1062                         udfs->dux_commands[OUTBASE+j*2] = 0xFF & rngmask;
1063                         udfs->dux_commands[LOGBASE+j*2] = 0;
1064
1065                         if (CR_RANGE(cmd->chanlist[j + 1]) > 0)
1066                                 rngmask = 0xff - 0x04;
1067                         else
1068                                 rngmask = 0xff;
1069
1070                         /* do the second part of the delay */
1071                         udfs->dux_commands[LENBASE+j*2+1] = steps - steps / 2;
1072                         /* no data */
1073                         udfs->dux_commands[OPBASE+j*2+1] = 0;
1074                         /* count */
1075                         udfs->dux_commands[OUTBASE+j*2+1] = 0xFE & rngmask;
1076                         udfs->dux_commands[LOGBASE+j*2+1] = 0;
1077                 }
1078
1079                 /* 2 steps with duration 1: the idele step and step 6: */
1080                 steps_tmp = steps - 2;
1081
1082                 /* commit data to the FIFO and do the first part of the delay */
1083                 udfs->dux_commands[LENBASE+4] = steps_tmp / 2;
1084                 /* data */
1085                 udfs->dux_commands[OPBASE+4] = 0x02;
1086                 udfs->dux_commands[OUTBASE+4] = 0xFF & rngmask;
1087                 udfs->dux_commands[LOGBASE+4] = 0;
1088
1089                 if (CR_RANGE(cmd->chanlist[0]) > 0)
1090                         rngmask = 0xff - 0x04;
1091                 else
1092                         rngmask = 0xff;
1093
1094                 /* do the second part of the delay */
1095                 udfs->dux_commands[LENBASE+5] = steps_tmp - steps_tmp / 2;
1096                 /* no data */
1097                 udfs->dux_commands[OPBASE+5] = 0;
1098                 /* reset */
1099                 udfs->dux_commands[OUTBASE+5] = (0xFF - 0x02) & rngmask;
1100                 udfs->dux_commands[LOGBASE+5] = 0;
1101
1102                 udfs->dux_commands[LENBASE+6] = 1;
1103                 udfs->dux_commands[OPBASE+6] = 0;
1104                 udfs->dux_commands[OUTBASE+6] = 0xFF & rngmask;
1105                 udfs->dux_commands[LOGBASE+6] = 0;
1106
1107         case 16:
1108                 if (CR_RANGE(cmd->chanlist[0]) > 0)
1109                         rngmask = 0xff - 0x04;
1110                 else
1111                         rngmask = 0xff;
1112
1113                 if (cmd->start_src == TRIG_EXT) {
1114                         /*
1115                          * we loop here until ready has been set
1116                          */
1117
1118                         /* branch back to state 0 */
1119                         udfs->dux_commands[LENBASE+0] = 0x01;
1120                         /* deceision state w/o data */
1121                         udfs->dux_commands[OPBASE+0] = 0x01;
1122                         /* reset */
1123                         udfs->dux_commands[OUTBASE+0] = (0xFF-0x02) & rngmask;
1124                         /* RDY0 = 0 */
1125                         udfs->dux_commands[LOGBASE+0] = 0x00;
1126                 } else {
1127                         /*
1128                          * we just proceed to state 1
1129                          */
1130
1131                         /* 30us reset pulse */
1132                         udfs->dux_commands[LENBASE+0] = 255;
1133                         udfs->dux_commands[OPBASE+0] = 0;
1134                         /* reset */
1135                         udfs->dux_commands[OUTBASE+0] = (0xFF-0x02) & rngmask;
1136                         udfs->dux_commands[LOGBASE+0] = 0;
1137                 }
1138
1139                 /* commit data to the FIFO */
1140                 udfs->dux_commands[LENBASE+1] = 1;
1141                 /* data */
1142                 udfs->dux_commands[OPBASE+1] = 0x02;
1143                 udfs->dux_commands[OUTBASE+1] = 0xFF & rngmask;
1144                 udfs->dux_commands[LOGBASE+1] = 0;
1145
1146                 /* we have 2 states with duration 1 */
1147                 steps = steps - 2;
1148
1149                 /* do the first part of the delay */
1150                 udfs->dux_commands[LENBASE+2] = steps / 2;
1151                 udfs->dux_commands[OPBASE+2] = 0;
1152                 udfs->dux_commands[OUTBASE+2] = 0xFE & rngmask;
1153                 udfs->dux_commands[LOGBASE+2] = 0;
1154
1155                 /* and the second part */
1156                 udfs->dux_commands[LENBASE+3] = steps - steps / 2;
1157                 udfs->dux_commands[OPBASE+3] = 0;
1158                 udfs->dux_commands[OUTBASE+3] = 0xFF & rngmask;
1159                 udfs->dux_commands[LOGBASE+3] = 0;
1160
1161                 /* branch back to state 1 */
1162                 udfs->dux_commands[LENBASE+4] = 0x09;
1163                 /* deceision state w/o data */
1164                 udfs->dux_commands[OPBASE+4] = 0x01;
1165                 udfs->dux_commands[OUTBASE+4] = 0xFF & rngmask;
1166                 /* doesn't matter */
1167                 udfs->dux_commands[LOGBASE+4] = 0xFF;
1168
1169                 break;
1170
1171         default:
1172                 printk(KERN_ERR "comedi %d: unsupported combination of "
1173                        "channels\n", dev->minor);
1174                 up(&udfs->sem);
1175                 return -EFAULT;
1176         }
1177
1178 #ifdef CONFIG_COMEDI_DEBUG
1179         printk(KERN_DEBUG "comedi %d: sending commands to the usb device\n",
1180                dev->minor);
1181 #endif
1182         /* 0 means that the AD commands are sent */
1183         result = send_dux_commands(udfs, SENDADCOMMANDS);
1184         if (result < 0) {
1185                 printk(KERN_ERR "comedi%d: adc command could not be submitted."
1186                        "Aborting...\n", dev->minor);
1187                 up(&udfs->sem);
1188                 return result;
1189         }
1190         if (cmd->stop_src == TRIG_COUNT) {
1191                 udfs->ai_sample_count = cmd->stop_arg * cmd->scan_end_arg;
1192                 if (udfs->ai_sample_count < 1) {
1193                         printk(KERN_ERR "comedi%d: "
1194                                "(cmd->stop_arg)*(cmd->scan_end_arg)<1, "
1195                                "aborting.\n", dev->minor);
1196                         up(&udfs->sem);
1197                         return -EFAULT;
1198                 }
1199                 udfs->ai_continous = 0;
1200         } else {
1201                 /* continous aquisition */
1202                 udfs->ai_continous = 1;
1203                 udfs->ai_sample_count = 0;
1204         }
1205
1206         if ((cmd->start_src == TRIG_NOW) || (cmd->start_src == TRIG_EXT)) {
1207                 /* enable this acquisition operation */
1208                 udfs->ai_cmd_running = 1;
1209                 ret = usbduxfastsub_submit_InURBs(udfs);
1210                 if (ret < 0) {
1211                         udfs->ai_cmd_running = 0;
1212                         /* fixme: unlink here?? */
1213                         up(&udfs->sem);
1214                         return ret;
1215                 }
1216                 s->async->inttrig = NULL;
1217         } else {
1218                 /*
1219                  * TRIG_INT
1220                  * don't enable the acquision operation
1221                  * wait for an internal signal
1222                  */
1223                 s->async->inttrig = usbduxfast_ai_inttrig;
1224         }
1225         up(&udfs->sem);
1226
1227         return 0;
1228 }
1229
1230 /*
1231  * Mode 0 is used to get a single conversion on demand.
1232  */
1233 static int usbduxfast_ai_insn_read(struct comedi_device *dev,
1234         comedi_subdevice *s, comedi_insn *insn, unsigned int *data)
1235 {
1236         int i, j, n, actual_length;
1237         int chan, range, rngmask;
1238         int err;
1239         struct usbduxfastsub_s *udfs;
1240
1241         udfs = dev->private;
1242         if (!udfs) {
1243                 printk(KERN_ERR "comedi%d: ai_insn_read: no usb dev.\n",
1244                        dev->minor);
1245                 return -ENODEV;
1246         }
1247 #ifdef CONFIG_COMEDI_DEBUG
1248         printk(KERN_DEBUG "comedi%d: ai_insn_read, insn->n=%d, "
1249                "insn->subdev=%d\n", dev->minor, insn->n, insn->subdev);
1250 #endif
1251         down(&udfs->sem);
1252         if (!udfs->probed) {
1253                 up(&udfs->sem);
1254                 return -ENODEV;
1255         }
1256         if (udfs->ai_cmd_running) {
1257                 printk(KERN_ERR "comedi%d: ai_insn_read not possible. Async "
1258                        "Command is running.\n", dev->minor);
1259                 up(&udfs->sem);
1260                 return -EBUSY;
1261         }
1262         /* sample one channel */
1263         chan = CR_CHAN(insn->chanspec);
1264         range = CR_RANGE(insn->chanspec);
1265         /* set command for the first channel */
1266
1267         if (range > 0)
1268                 rngmask = 0xff - 0x04;
1269         else
1270                 rngmask = 0xff;
1271
1272         /* commit data to the FIFO */
1273         udfs->dux_commands[LENBASE+0] = 1;
1274         /* data */
1275         udfs->dux_commands[OPBASE+0] = 0x02;
1276         udfs->dux_commands[OUTBASE+0] = 0xFF & rngmask;
1277         udfs->dux_commands[LOGBASE+0] = 0;
1278
1279         /* do the first part of the delay */
1280         udfs->dux_commands[LENBASE+1] = 12;
1281         udfs->dux_commands[OPBASE+1] = 0;
1282         udfs->dux_commands[OUTBASE+1] = 0xFE & rngmask;
1283         udfs->dux_commands[LOGBASE+1] = 0;
1284
1285         udfs->dux_commands[LENBASE+2] = 1;
1286         udfs->dux_commands[OPBASE+2] = 0;
1287         udfs->dux_commands[OUTBASE+2] = 0xFE & rngmask;
1288         udfs->dux_commands[LOGBASE+2] = 0;
1289
1290         udfs->dux_commands[LENBASE+3] = 1;
1291         udfs->dux_commands[OPBASE+3] = 0;
1292         udfs->dux_commands[OUTBASE+3] = 0xFE & rngmask;
1293         udfs->dux_commands[LOGBASE+3] = 0;
1294
1295         udfs->dux_commands[LENBASE+4] = 1;
1296         udfs->dux_commands[OPBASE+4] = 0;
1297         udfs->dux_commands[OUTBASE+4] = 0xFE & rngmask;
1298         udfs->dux_commands[LOGBASE+4] = 0;
1299
1300         /* second part */
1301         udfs->dux_commands[LENBASE+5] = 12;
1302         udfs->dux_commands[OPBASE+5] = 0;
1303         udfs->dux_commands[OUTBASE+5] = 0xFF & rngmask;
1304         udfs->dux_commands[LOGBASE+5] = 0;
1305
1306         udfs->dux_commands[LENBASE+6] = 1;
1307         udfs->dux_commands[OPBASE+6] = 0;
1308         udfs->dux_commands[OUTBASE+6] = 0xFF & rngmask;
1309         udfs->dux_commands[LOGBASE+0] = 0;
1310
1311 #ifdef CONFIG_COMEDI_DEBUG
1312         printk(KERN_DEBUG "comedi %d: sending commands to the usb device\n",
1313                dev->minor);
1314 #endif
1315         /* 0 means that the AD commands are sent */
1316         err = send_dux_commands(udfs, SENDADCOMMANDS);
1317         if (err < 0) {
1318                 printk(KERN_ERR "comedi%d: adc command could not be submitted."
1319                        "Aborting...\n", dev->minor);
1320                 up(&udfs->sem);
1321                 return err;
1322         }
1323 #ifdef CONFIG_COMEDI_DEBUG
1324         printk(KERN_DEBUG "comedi%d: usbduxfast: submitting in-urb: "
1325                "0x%p,0x%p\n", udfs->comedidev->minor, udfs->urbIn->context,
1326                udfs->urbIn->dev);
1327 #endif
1328         for (i = 0; i < PACKETS_TO_IGNORE; i++) {
1329                 err = usb_bulk_msg(udfs->usbdev,
1330                                    usb_rcvbulkpipe(udfs->usbdev, BULKINEP),
1331                                    udfs->transfer_buffer, SIZEINBUF,
1332                                    &actual_length, 10000);
1333                 if (err < 0) {
1334                         printk(KERN_ERR "comedi%d: insn timeout. No data.\n",
1335                                 dev->minor);
1336                         up(&udfs->sem);
1337                         return err;
1338                 }
1339         }
1340         /* data points */
1341         for (i = 0; i < insn->n;) {
1342                 err = usb_bulk_msg(udfs->usbdev,
1343                                    usb_rcvbulkpipe(udfs->usbdev, BULKINEP),
1344                                    udfs->transfer_buffer, SIZEINBUF,
1345                                    &actual_length, 10000);
1346                 if (err < 0) {
1347                         printk(KERN_ERR "comedi%d: insn data error: %d\n",
1348                                 dev->minor, err);
1349                         up(&udfs->sem);
1350                         return err;
1351                 }
1352                 n = actual_length / sizeof(uint16_t);
1353                 if ((n % 16) != 0) {
1354                         printk(KERN_ERR "comedi%d: insn data packet "
1355                                "corrupted.\n", dev->minor);
1356                         up(&udfs->sem);
1357                         return -EINVAL;
1358                 }
1359                 for (j = chan; (j < n) && (i < insn->n); j = j + 16) {
1360                         data[i] = ((uint16_t *) (udfs->transfer_buffer))[j];
1361                         i++;
1362                 }
1363         }
1364         up(&udfs->sem);
1365         return i;
1366 }
1367
1368 static unsigned hex2unsigned(char *h)
1369 {
1370         unsigned hi, lo;
1371
1372         if (h[0] > '9')
1373                 hi = h[0] - 'A' + 0x0a;
1374         else
1375                 hi = h[0] - '0';
1376
1377         if (h[1] > '9')
1378                 lo = h[1] - 'A' + 0x0a;
1379         else
1380                 lo = h[1] - '0';
1381
1382         return hi * 0x10 + lo;
1383 }
1384
1385 /* for FX2 */
1386 #define FIRMWARE_MAX_LEN 0x2000
1387
1388 /*
1389  * taken from David Brownell's fxload and adjusted for this driver
1390  */
1391 static int read_firmware(struct usbduxfastsub_s *udfs, const void *firmwarePtr,
1392                          long size)
1393 {
1394         int i = 0;
1395         unsigned char *fp = (char *)firmwarePtr;
1396         unsigned char *firmwareBinary;
1397         int res = 0;
1398         int maxAddr = 0;
1399
1400         firmwareBinary = kmalloc(FIRMWARE_MAX_LEN, GFP_KERNEL);
1401         if (!firmwareBinary) {
1402                 printk(KERN_ERR "comedi_: usbduxfast: mem alloc for firmware "
1403                        " failed\n");
1404                 return -ENOMEM;
1405         }
1406
1407         for (;;) {
1408                 char buf[256], *cp;
1409                 char type;
1410                 int len;
1411                 int idx, off;
1412                 int j = 0;
1413
1414                 /* get one line */
1415                 while ((i < size) && (fp[i] != 13) && (fp[i] != 10)) {
1416                         buf[j] = fp[i];
1417                         i++;
1418                         j++;
1419                         if (j >= sizeof(buf)) {
1420                                 printk(KERN_ERR "comedi_: usbduxfast: bogus "
1421                                        "firmware file!\n");
1422                                 kfree(firmwareBinary);
1423                                 return -1;
1424                         }
1425                 }
1426                 /* get rid of LF/CR/... */
1427                 while ((i < size) && ((fp[i] == 13) || (fp[i] == 10)
1428                                         || (fp[i] == 0)))
1429                         i++;
1430
1431                 buf[j] = 0;
1432                 /* printk("comedi_: buf=%s\n",buf); */
1433
1434                 /*
1435                  * EXTENSION: "# comment-till-end-of-line",
1436                  * for copyrights etc
1437                  */
1438                 if (buf[0] == '#')
1439                         continue;
1440
1441                 if (buf[0] != ':') {
1442                         printk(KERN_ERR "comedi_: usbduxfast: upload: not an "
1443                                "ihex record: %s", buf);
1444                         kfree(firmwareBinary);
1445                         return -EFAULT;
1446                 }
1447
1448                 /* Read the length field (up to 16 bytes) */
1449                 len = hex2unsigned(buf + 1);
1450
1451                 /* Read the target offset */
1452                 off = (hex2unsigned(buf + 3) * 0x0100) + hex2unsigned(buf + 5);
1453
1454                 if ((off + len) > maxAddr)
1455                         maxAddr = off + len;
1456
1457                 if (maxAddr >= FIRMWARE_MAX_LEN) {
1458                         printk(KERN_ERR "comedi_: usbduxfast: firmware upload "
1459                                "goes beyond FX2 RAM boundaries.");
1460                         kfree(firmwareBinary);
1461                         return -EFAULT;
1462                 }
1463                 /* printk("comedi_: usbduxfast: off=%x, len=%x:",off,len); */
1464
1465                 /* Read the record type */
1466                 type = hex2unsigned(buf + 7);
1467
1468                 /* If this is an EOF record, then make it so. */
1469                 if (type == 1)
1470                         break;
1471
1472                 if (type != 0) {
1473                         printk(KERN_ERR "comedi_: usbduxfast: unsupported "
1474                                "record type: %u\n", type);
1475                         kfree(firmwareBinary);
1476                         return -EFAULT;
1477                 }
1478
1479                 for (idx = 0, cp = buf + 9; idx < len; idx += 1, cp += 2) {
1480                         firmwareBinary[idx + off] = hex2unsigned(cp);
1481                         /* printk("%02x ",firmwareBinary[idx+off]); */
1482                 }
1483
1484                 /* printk("\n"); */
1485
1486                 if (i >= size) {
1487                         printk(KERN_ERR "comedi_: usbduxfast: unexpected end "
1488                                "of hex file\n");
1489                         break;
1490                 }
1491
1492         }
1493         res = firmwareUpload(udfs, firmwareBinary, maxAddr + 1);
1494         kfree(firmwareBinary);
1495         return res;
1496 }
1497
1498 static void tidy_up(struct usbduxfastsub_s *udfs)
1499 {
1500 #ifdef CONFIG_COMEDI_DEBUG
1501         printk(KERN_DEBUG "comedi_: usbduxfast: tiding up\n");
1502 #endif
1503
1504         if (!udfs)
1505                 return;
1506
1507         /* shows the usb subsystem that the driver is down */
1508         if (udfs->interface)
1509                 usb_set_intfdata(udfs->interface, NULL);
1510
1511         udfs->probed = 0;
1512
1513         if (udfs->urbIn) {
1514                 /* waits until a running transfer is over */
1515                 usb_kill_urb(udfs->urbIn);
1516
1517                 kfree(udfs->transfer_buffer);
1518                 udfs->transfer_buffer = NULL;
1519
1520                 usb_free_urb(udfs->urbIn);
1521                 udfs->urbIn = NULL;
1522         }
1523
1524         kfree(udfs->insnBuffer);
1525         udfs->insnBuffer = NULL;
1526
1527         kfree(udfs->dux_commands);
1528         udfs->dux_commands = NULL;
1529
1530         udfs->ai_cmd_running = 0;
1531 }
1532
1533 static void usbduxfast_firmware_request_complete_handler(const struct firmware *fw,
1534                                                          void *context)
1535 {
1536         struct usbduxfastsub_s *usbduxfastsub_tmp = context;
1537         struct usb_device *usbdev = usbduxfastsub_tmp->usbdev;
1538         int ret;
1539
1540         if (fw == NULL)
1541                 return;
1542
1543         /*
1544          * we need to upload the firmware here because fw will be
1545          * freed once we've left this function
1546          */
1547         ret = read_firmware(usbduxfastsub_tmp, fw->data, fw->size);
1548
1549         if (ret) {
1550                 dev_err(&usbdev->dev,
1551                         "Could not upload firmware (err=%d)\n",
1552                         ret);
1553                 return;
1554         }
1555
1556         comedi_usb_auto_config(usbdev, BOARDNAME);
1557 }
1558
1559 /*
1560  * allocate memory for the urbs and initialise them
1561  */
1562 static int usbduxfastsub_probe(struct usb_interface *uinterf,
1563         const struct usb_device_id *id)
1564 {
1565         struct usb_device *udev = interface_to_usbdev(uinterf);
1566         int i;
1567         int index;
1568         int ret;
1569
1570         if (udev->speed != USB_SPEED_HIGH) {
1571                 printk(KERN_ERR "comedi_: usbduxfast_: This driver needs"
1572                        "USB 2.0 to operate. Aborting...\n");
1573                 return -ENODEV;
1574         }
1575 #ifdef CONFIG_COMEDI_DEBUG
1576         printk(KERN_DEBUG "comedi_: usbduxfast_: finding a free structure for "
1577                "the usb-device\n");
1578 #endif
1579         down(&start_stop_sem);
1580         /* look for a free place in the usbduxfast array */
1581         index = -1;
1582         for (i = 0; i < NUMUSBDUXFAST; i++) {
1583                 if (!usbduxfastsub[i].probed) {
1584                         index = i;
1585                         break;
1586                 }
1587         }
1588
1589         /* no more space */
1590         if (index == -1) {
1591                 printk(KERN_ERR "Too many usbduxfast-devices connected.\n");
1592                 up(&start_stop_sem);
1593                 return -EMFILE;
1594         }
1595 #ifdef CONFIG_COMEDI_DEBUG
1596         printk(KERN_DEBUG "comedi_: usbduxfast: usbduxfastsub[%d] is ready to "
1597                "connect to comedi.\n", index);
1598 #endif
1599
1600         init_MUTEX(&(usbduxfastsub[index].sem));
1601         /* save a pointer to the usb device */
1602         usbduxfastsub[index].usbdev = udev;
1603
1604         /* save the interface itself */
1605         usbduxfastsub[index].interface = uinterf;
1606         /* get the interface number from the interface */
1607         usbduxfastsub[index].ifnum = uinterf->altsetting->desc.bInterfaceNumber;
1608         /*
1609          * hand the private data over to the usb subsystem
1610          * will be needed for disconnect
1611          */
1612         usb_set_intfdata(uinterf, &(usbduxfastsub[index]));
1613
1614 #ifdef CONFIG_COMEDI_DEBUG
1615         printk(KERN_DEBUG "comedi_: usbduxfast: ifnum=%d\n",
1616                usbduxfastsub[index].ifnum);
1617 #endif
1618         /* create space for the commands going to the usb device */
1619         usbduxfastsub[index].dux_commands = kmalloc(SIZEOFDUXBUFFER,
1620                                                     GFP_KERNEL);
1621         if (!usbduxfastsub[index].dux_commands) {
1622                 printk(KERN_ERR "comedi_: usbduxfast: error alloc space for "
1623                        "dac commands\n");
1624                 tidy_up(&(usbduxfastsub[index]));
1625                 up(&start_stop_sem);
1626                 return -ENOMEM;
1627         }
1628         /* create space of the instruction buffer */
1629         usbduxfastsub[index].insnBuffer = kmalloc(SIZEINSNBUF, GFP_KERNEL);
1630         if (!usbduxfastsub[index].insnBuffer) {
1631                 printk(KERN_ERR "comedi_: usbduxfast: could not alloc space "
1632                        "for insnBuffer\n");
1633                 tidy_up(&(usbduxfastsub[index]));
1634                 up(&start_stop_sem);
1635                 return -ENOMEM;
1636         }
1637         /* setting to alternate setting 1: enabling bulk ep */
1638         i = usb_set_interface(usbduxfastsub[index].usbdev,
1639                 usbduxfastsub[index].ifnum, 1);
1640         if (i < 0) {
1641                 printk(KERN_ERR "comedi_: usbduxfast%d: could not switch to "
1642                        "alternate setting 1.\n", index);
1643                 tidy_up(&(usbduxfastsub[index]));
1644                 up(&start_stop_sem);
1645                 return -ENODEV;
1646         }
1647         usbduxfastsub[index].urbIn = usb_alloc_urb(0, GFP_KERNEL);
1648         if (!usbduxfastsub[index].urbIn) {
1649                 printk(KERN_ERR "comedi_: usbduxfast%d: Could not alloc."
1650                        "urb\n", index);
1651                 tidy_up(&(usbduxfastsub[index]));
1652                 up(&start_stop_sem);
1653                 return -ENOMEM;
1654         }
1655         usbduxfastsub[index].transfer_buffer = kmalloc(SIZEINBUF, GFP_KERNEL);
1656         if (!usbduxfastsub[index].transfer_buffer) {
1657                 printk(KERN_ERR "comedi_: usbduxfast%d: could not alloc. "
1658                        "transb.\n", index);
1659                 tidy_up(&(usbduxfastsub[index]));
1660                 up(&start_stop_sem);
1661                 return -ENOMEM;
1662         }
1663         /* we've reached the bottom of the function */
1664         usbduxfastsub[index].probed = 1;
1665         up(&start_stop_sem);
1666
1667         ret = request_firmware_nowait(THIS_MODULE,
1668                                       FW_ACTION_HOTPLUG,
1669                                       "usbduxfast_firmware.hex",
1670                                       &udev->dev,
1671                                       usbduxfastsub + index,
1672                                       usbduxfast_firmware_request_complete_handler);
1673
1674         if (ret) {
1675                 dev_err(&udev->dev, "could not load firmware (err=%d)\n",
1676                         ret);
1677                 return ret;
1678         }
1679
1680         printk(KERN_INFO "comedi_: usbduxfast%d has been successfully "
1681                "initialized.\n", index);
1682         /* success */
1683         return 0;
1684 }
1685
1686 static void usbduxfastsub_disconnect(struct usb_interface *intf)
1687 {
1688         struct usbduxfastsub_s *udfs = usb_get_intfdata(intf);
1689         struct usb_device *udev = interface_to_usbdev(intf);
1690
1691         if (!udfs) {
1692                 printk(KERN_ERR "comedi_: usbduxfast: disconnect called with "
1693                        "null pointer.\n");
1694                 return;
1695         }
1696         if (udfs->usbdev != udev) {
1697                 printk(KERN_ERR "comedi_: usbduxfast: BUG! called with wrong "
1698                        "ptr!!!\n");
1699                 return;
1700         }
1701
1702         comedi_usb_auto_unconfig(udev);
1703
1704         down(&start_stop_sem);
1705         down(&udfs->sem);
1706         tidy_up(udfs);
1707         up(&udfs->sem);
1708         up(&start_stop_sem);
1709
1710 #ifdef CONFIG_COMEDI_DEBUG
1711         printk(KERN_DEBUG "comedi_: usbduxfast: disconnected from the usb\n");
1712 #endif
1713 }
1714
1715 /*
1716  * is called when comedi-config is called
1717  */
1718 static int usbduxfast_attach(struct comedi_device *dev, comedi_devconfig *it)
1719 {
1720         int ret;
1721         int index;
1722         int i;
1723         comedi_subdevice *s = NULL;
1724         dev->private = NULL;
1725
1726         down(&start_stop_sem);
1727         /*
1728          * find a valid device which has been detected by the
1729          * probe function of the usb
1730          */
1731         index = -1;
1732         for (i = 0; i < NUMUSBDUXFAST; i++) {
1733                 if (usbduxfastsub[i].probed && !usbduxfastsub[i].attached) {
1734                         index = i;
1735                         break;
1736                 }
1737         }
1738
1739         if (index < 0) {
1740                 printk(KERN_ERR "comedi%d: usbduxfast: error: attach failed, "
1741                        "no usbduxfast devs connected to the usb bus.\n",
1742                        dev->minor);
1743                 up(&start_stop_sem);
1744                 return -ENODEV;
1745         }
1746
1747         down(&(usbduxfastsub[index].sem));
1748         /* pointer back to the corresponding comedi device */
1749         usbduxfastsub[index].comedidev = dev;
1750
1751         /* trying to upload the firmware into the chip */
1752         if (comedi_aux_data(it->options, 0) &&
1753             it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]) {
1754                 read_firmware(&usbduxfastsub[index],
1755                               comedi_aux_data(it->options, 0),
1756                               it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]);
1757         }
1758
1759         dev->board_name = BOARDNAME;
1760
1761         /* set number of subdevices */
1762         dev->n_subdevices = N_SUBDEVICES;
1763
1764         /* allocate space for the subdevices */
1765         ret = alloc_subdevices(dev, N_SUBDEVICES);
1766         if (ret < 0) {
1767                 printk(KERN_ERR "comedi%d: usbduxfast: error alloc space for "
1768                        "subdev\n", dev->minor);
1769                 up(&(usbduxfastsub[index].sem));
1770                 up(&start_stop_sem);
1771                 return ret;
1772         }
1773
1774         printk(KERN_INFO "comedi%d: usbduxfast: usb-device %d is attached to "
1775                "comedi.\n", dev->minor, index);
1776         /* private structure is also simply the usb-structure */
1777         dev->private = usbduxfastsub + index;
1778         /* the first subdevice is the A/D converter */
1779         s = dev->subdevices + SUBDEV_AD;
1780         /*
1781          * the URBs get the comedi subdevice which is responsible for reading
1782          * this is the subdevice which reads data
1783          */
1784         dev->read_subdev = s;
1785         /* the subdevice receives as private structure the usb-structure */
1786         s->private = NULL;
1787         /* analog input */
1788         s->type = COMEDI_SUBD_AI;
1789         /* readable and ref is to ground */
1790         s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_CMD_READ;
1791         /* 16 channels */
1792         s->n_chan = 16;
1793         /* length of the channellist */
1794         s->len_chanlist = 16;
1795         /* callback functions */
1796         s->insn_read = usbduxfast_ai_insn_read;
1797         s->do_cmdtest = usbduxfast_ai_cmdtest;
1798         s->do_cmd = usbduxfast_ai_cmd;
1799         s->cancel = usbduxfast_ai_cancel;
1800         /* max value from the A/D converter (12bit+1 bit for overflow) */
1801         s->maxdata = 0x1000;
1802         /* range table to convert to physical units */
1803         s->range_table = &range_usbduxfast_ai_range;
1804
1805         /* finally decide that it's attached */
1806         usbduxfastsub[index].attached = 1;
1807
1808         up(&(usbduxfastsub[index].sem));
1809         up(&start_stop_sem);
1810         printk(KERN_INFO "comedi%d: successfully attached to usbduxfast.\n",
1811                dev->minor);
1812
1813         return 0;
1814 }
1815
1816 static int usbduxfast_detach(struct comedi_device *dev)
1817 {
1818         struct usbduxfastsub_s *udfs;
1819
1820         if (!dev) {
1821                 printk(KERN_ERR "comedi?: usbduxfast: detach without dev "
1822                        "variable...\n");
1823                 return -EFAULT;
1824         }
1825
1826 #ifdef CONFIG_COMEDI_DEBUG
1827         printk(KERN_DEBUG "comedi%d: usbduxfast: detach usb device\n",
1828                dev->minor);
1829 #endif
1830
1831         udfs = dev->private;
1832         if (!udfs) {
1833                 printk(KERN_ERR "comedi?: usbduxfast: detach without ptr to "
1834                        "usbduxfastsub[]\n");
1835                 return -EFAULT;
1836         }
1837
1838         down(&udfs->sem);
1839         down(&start_stop_sem);
1840         /*
1841          * Don't allow detach to free the private structure
1842          * It's one entry of of usbduxfastsub[]
1843          */
1844         dev->private = NULL;
1845         udfs->attached = 0;
1846         udfs->comedidev = NULL;
1847 #ifdef CONFIG_COMEDI_DEBUG
1848         printk(KERN_DEBUG "comedi%d: usbduxfast: detach: successfully "
1849                "removed\n", dev->minor);
1850 #endif
1851         up(&start_stop_sem);
1852         up(&udfs->sem);
1853         return 0;
1854 }
1855
1856 /*
1857  * main driver struct
1858  */
1859 static comedi_driver driver_usbduxfast = {
1860         .driver_name    = "usbduxfast",
1861         .module         = THIS_MODULE,
1862         .attach         = usbduxfast_attach,
1863         .detach         = usbduxfast_detach
1864 };
1865
1866 /*
1867  * Table with the USB-devices: just now only testing IDs
1868  */
1869 static struct usb_device_id usbduxfastsub_table[] = {
1870         /* { USB_DEVICE(0x4b4, 0x8613) }, testing */
1871         { USB_DEVICE(0x13d8, 0x0010) }, /* real ID */
1872         { USB_DEVICE(0x13d8, 0x0011) }, /* real ID */
1873         { }                     /* Terminating entry */
1874 };
1875
1876 MODULE_DEVICE_TABLE(usb, usbduxfastsub_table);
1877
1878 /*
1879  * The usbduxfastsub-driver
1880  */
1881 static struct usb_driver usbduxfastsub_driver = {
1882 #ifdef COMEDI_HAVE_USB_DRIVER_OWNER
1883         .owner          = THIS_MODULE,
1884 #endif
1885         .name           = BOARDNAME,
1886         .probe          = usbduxfastsub_probe,
1887         .disconnect     = usbduxfastsub_disconnect,
1888         .id_table       = usbduxfastsub_table
1889 };
1890
1891 /*
1892  * Can't use the nice macro as I have also to initialise the USB subsystem:
1893  * registering the usb-system _and_ the comedi-driver
1894  */
1895 static int __init init_usbduxfast(void)
1896 {
1897         printk(KERN_INFO
1898                KBUILD_MODNAME ": " DRIVER_VERSION ":" DRIVER_DESC "\n");
1899         usb_register(&usbduxfastsub_driver);
1900         comedi_driver_register(&driver_usbduxfast);
1901         return 0;
1902 }
1903
1904 /*
1905  * deregistering the comedi driver and the usb-subsystem
1906  */
1907 static void __exit exit_usbduxfast(void)
1908 {
1909         comedi_driver_unregister(&driver_usbduxfast);
1910         usb_deregister(&usbduxfastsub_driver);
1911 }
1912
1913 module_init(init_usbduxfast);
1914 module_exit(exit_usbduxfast);
1915
1916 MODULE_AUTHOR(DRIVER_AUTHOR);
1917 MODULE_DESCRIPTION(DRIVER_DESC);
1918 MODULE_LICENSE("GPL");