hardware/zeroplus-logic-cube/api.c

   1 /*
   2  * This file is part of the sigrok project.
   3  *
   4  * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "protocol.h"
  21
  22 #define VENDOR_NAME                     "ZEROPLUS"
  23 #define USB_INTERFACE                   0
  24 #define USB_CONFIGURATION               1
  25 #define NUM_TRIGGER_STAGES              4
  26 #define TRIGGER_TYPE                    "01"
  27 #define PACKET_SIZE                     2048    /* ?? */
  28
  29 //#define ZP_EXPERIMENTAL
  30
  31 struct zp_model {
  32         uint16_t vid;
  33         uint16_t pid;
  34         char *model_name;
  35         unsigned int channels;
  36         unsigned int sample_depth;      /* In Ksamples/channel */
  37         unsigned int max_sampling_freq;
  38 };
  39
  40 /*
  41  * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
  42  * same 128K sample depth.
  43  */
  44 static const struct zp_model zeroplus_models[] = {
  45         {0x0c12, 0x7009, "LAP-C(16064)",  16, 64,   100},
  46         {0x0c12, 0x700a, "LAP-C(16128)",  16, 128,  200},
  47         /* TODO: We don't know anything about these.
  48         {0x0c12, 0x700b, "LAP-C(32128)",  32, 128,  200},
  49         {0x0c12, 0x700c, "LAP-C(321000)", 32, 1024, 200},
  50         {0x0c12, 0x700d, "LAP-C(322000)", 32, 2048, 200},
  51         */
  52         {0x0c12, 0x700e, "LAP-C(16032)",  16, 32,   100},
  53         {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
  54         { 0, 0, 0, 0, 0, 0 }
  55 };
  56
  57 static const int hwcaps[] = {
  58         SR_CONF_LOGIC_ANALYZER,
  59         SR_CONF_SAMPLERATE,
  60         SR_CONF_CAPTURE_RATIO,
  61         SR_CONF_LIMIT_SAMPLES,
  62         0,
  63 };
  64
  65 /*
  66  * ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
  67  * We currently ignore other untested/unsupported devices here.
  68  */
  69 static const char *probe_names[] = {
  70         "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  71         "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7",
  72         NULL,
  73 };
  74
  75 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
  76 static struct sr_dev_driver *di = &zeroplus_logic_cube_driver_info;
  77
  78 /*
  79  * The hardware supports more samplerates than these, but these are the
  80  * options hardcoded into the vendor's Windows GUI.
  81  */
  82
  83 static const uint64_t zp_supported_samplerates_100[] = {
  84         SR_HZ(100),
  85         SR_HZ(500),
  86         SR_KHZ(1),
  87         SR_KHZ(5),
  88         SR_KHZ(25),
  89         SR_KHZ(50),
  90         SR_KHZ(100),
  91         SR_KHZ(200),
  92         SR_KHZ(400),
  93         SR_KHZ(800),
  94         SR_MHZ(1),
  95         SR_MHZ(10),
  96         SR_MHZ(25),
  97         SR_MHZ(50),
  98         SR_MHZ(80),
  99         SR_MHZ(100),
 100         0,
 101 };
 102
 103 const uint64_t zp_supported_samplerates_200[] = {
 104         SR_HZ(100),
 105         SR_HZ(500),
 106         SR_KHZ(1),
 107         SR_KHZ(5),
 108         SR_KHZ(25),
 109         SR_KHZ(50),
 110         SR_KHZ(100),
 111         SR_KHZ(200),
 112         SR_KHZ(400),
 113         SR_KHZ(800),
 114         SR_MHZ(1),
 115         SR_MHZ(10),
 116         SR_MHZ(25),
 117         SR_MHZ(50),
 118         SR_MHZ(80),
 119         SR_MHZ(100),
 120         SR_MHZ(150),
 121         SR_MHZ(200),
 122         0,
 123 };
 124
 125 static const struct sr_samplerates samplerates_100 = {
 126         .low  = 0,
 127         .high = 0,
 128         .step = 0,
 129         .list = zp_supported_samplerates_100,
 130 };
 131
 132 static const struct sr_samplerates samplerates_200 = {
 133         .low  = 0,
 134         .high = 0,
 135         .step = 0,
 136         .list = zp_supported_samplerates_200,
 137 };
 138
 139 static int hw_dev_close(struct sr_dev_inst *sdi);
 140
 141 #if 0
 142 static int configure_probes(const struct sr_dev_inst *sdi)
 143 {
 144         struct dev_context *devc;
 145         const struct sr_probe *probe;
 146         const GSList *l;
 147         int probe_bit, stage, i;
 148         char *tc;
 149
 150         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 151         devc = sdi->priv;
 152
 153         devc->probe_mask = 0;
 154         for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
 155                 devc->trigger_mask[i] = 0;
 156                 devc->trigger_value[i] = 0;
 157         }
 158
 159         stage = -1;
 160         for (l = sdi->probes; l; l = l->next) {
 161                 probe = (struct sr_probe *)l->data;
 162                 if (probe->enabled == FALSE)
 163                         continue;
 164                 probe_bit = 1 << (probe->index);
 165                 devc->probe_mask |= probe_bit;
 166
 167                 if (probe->trigger) {
 168                         stage = 0;
 169                         for (tc = probe->trigger; *tc; tc++) {
 170                                 devc->trigger_mask[stage] |= probe_bit;
 171                                 if (*tc == '1')
 172                                         devc->trigger_value[stage] |= probe_bit;
 173                                 stage++;
 174                                 if (stage > NUM_TRIGGER_STAGES)
 175                                         return SR_ERR;
 176                         }
 177                 }
 178         }
 179
 180         return SR_OK;
 181 }
 182 #endif
 183
 184 static int configure_probes(const struct sr_dev_inst *sdi)
 185 {
 186         struct dev_context *devc;
 187         const GSList *l;
 188         const struct sr_probe *probe;
 189         char *tc;
 190         int type;
 191
 192         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 193         devc = sdi->priv;
 194
 195         for (l = sdi->probes; l; l = l->next) {
 196                 probe = (struct sr_probe *)l->data;
 197                 if (probe->enabled == FALSE)
 198                         continue;
 199
 200                 if ((tc = probe->trigger)) {
 201                         switch (*tc) {
 202                         case '1':
 203                                 type = TRIGGER_HIGH;
 204                                 break;
 205                         case '0':
 206                                 type = TRIGGER_LOW;
 207                                 break;
 208 #if 0
 209                         case 'r':
 210                                 type = TRIGGER_POSEDGE;
 211                                 break;
 212                         case 'f':
 213                                 type = TRIGGER_NEGEDGE;
 214                                 break;
 215                         case 'c':
 216                                 type = TRIGGER_ANYEDGE;
 217                                 break;
 218 #endif
 219                         default:
 220                                 return SR_ERR;
 221                         }
 222                         analyzer_add_trigger(probe->index, type);
 223                         devc->trigger = 1;
 224                 }
 225         }
 226
 227         return SR_OK;
 228 }
 229
 230 static int clear_instances(void)
 231 {
 232         GSList *l;
 233         struct sr_dev_inst *sdi;
 234         struct drv_context *drvc;
 235         struct dev_context *devc;
 236
 237         drvc = di->priv;
 238         for (l = drvc->instances; l; l = l->next) {
 239                 sdi = l->data;
 240                 if (!(devc = sdi->priv)) {
 241                         /* Log error, but continue cleaning up the rest. */
 242                         sr_err("%s: sdi->priv was NULL, continuing", __func__);
 243                         continue;
 244                 }
 245                 sr_usb_dev_inst_free(devc->usb);
 246                 /* Properly close all devices... */
 247                 hw_dev_close(sdi);
 248                 /* ...and free all their memory. */
 249                 sr_dev_inst_free(sdi);
 250         }
 251         g_slist_free(drvc->instances);
 252         drvc->instances = NULL;
 253
 254         return SR_OK;
 255 }
 256
 257 static int hw_init(struct sr_context *sr_ctx)
 258 {
 259         return std_hw_init(sr_ctx, di, "zeroplus: ");
 260 }
 261
 262 static GSList *hw_scan(GSList *options)
 263 {
 264         struct sr_dev_inst *sdi;
 265         struct sr_probe *probe;
 266         struct drv_context *drvc;
 267         struct dev_context *devc;
 268         const struct zp_model *prof;
 269         struct libusb_device_descriptor des;
 270         libusb_device **devlist;
 271         GSList *devices;
 272         int ret, devcnt, i, j;
 273
 274         (void)options;
 275
 276         drvc = di->priv;
 277
 278         devices = NULL;
 279
 280         clear_instances();
 281
 282         /* Find all ZEROPLUS analyzers and add them to device list. */
 283         devcnt = 0;
 284         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
 285
 286         for (i = 0; devlist[i]; i++) {
 287                 ret = libusb_get_device_descriptor(devlist[i], &des);
 288                 if (ret != 0) {
 289                         sr_err("Failed to get device descriptor: %s.",
 290                                libusb_error_name(ret));
 291                         continue;
 292                 }
 293
 294                 prof = NULL;
 295                 for (j = 0; j < zeroplus_models[j].vid; j++) {
 296                         if (des.idVendor == zeroplus_models[j].vid &&
 297                                 des.idProduct == zeroplus_models[j].pid) {
 298                                 prof = &zeroplus_models[j];
 299                         }
 300                 }
 301                 /* Skip if the device was not found. */
 302                 if (!prof)
 303                         continue;
 304                 sr_info("Found ZEROPLUS %s.", prof->model_name);
 305
 306                 /* Register the device with libsigrok. */
 307                 if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
 308                                 VENDOR_NAME, prof->model_name, NULL))) {
 309                         sr_err("%s: sr_dev_inst_new failed", __func__);
 310                         return NULL;
 311                 }
 312                 sdi->driver = di;
 313
 314                 /* Allocate memory for our private driver context. */
 315                 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 316                         sr_err("Device context malloc failed.");
 317                         return NULL;
 318                 }
 319
 320                 sdi->priv = devc;
 321                 devc->prof = prof;
 322                 devc->num_channels = prof->channels;
 323 #ifdef ZP_EXPERIMENTAL
 324                 devc->max_memory_size = 128 * 1024;
 325                 devc->max_samplerate = 200;
 326 #else
 327                 devc->max_memory_size = prof->sample_depth * 1024;
 328                 devc->max_samplerate = prof->max_sampling_freq;
 329 #endif
 330                 devc->max_samplerate *= SR_MHZ(1);
 331                 devc->memory_size = MEMORY_SIZE_8K;
 332                 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
 333
 334                 /* Fill in probelist according to this device's profile. */
 335                 for (j = 0; j < devc->num_channels; j++) {
 336                         if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
 337                                         probe_names[j])))
 338                                 return NULL;
 339                         sdi->probes = g_slist_append(sdi->probes, probe);
 340                 }
 341
 342                 devices = g_slist_append(devices, sdi);
 343                 drvc->instances = g_slist_append(drvc->instances, sdi);
 344                 devc->usb = sr_usb_dev_inst_new(
 345                         libusb_get_bus_number(devlist[i]),
 346                         libusb_get_device_address(devlist[i]), NULL);
 347                 devcnt++;
 348
 349         }
 350         libusb_free_device_list(devlist, 1);
 351
 352         return devices;
 353 }
 354
 355 static GSList *hw_dev_list(void)
 356 {
 357         return ((struct drv_context *)(di->priv))->instances;
 358 }
 359
 360 static int hw_dev_open(struct sr_dev_inst *sdi)
 361 {
 362         struct dev_context *devc;
 363         struct drv_context *drvc;
 364         libusb_device **devlist, *dev;
 365         struct libusb_device_descriptor des;
 366         int device_count, ret, i;
 367
 368         drvc = di->priv;
 369
 370         if (!(devc = sdi->priv)) {
 371                 sr_err("%s: sdi->priv was NULL", __func__);
 372                 return SR_ERR_ARG;
 373         }
 374
 375         device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx,
 376                                               &devlist);
 377         if (device_count < 0) {
 378                 sr_err("Failed to retrieve device list.");
 379                 return SR_ERR;
 380         }
 381
 382         dev = NULL;
 383         for (i = 0; i < device_count; i++) {
 384                 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
 385                         sr_err("Failed to get device descriptor: %s.",
 386                                libusb_error_name(ret));
 387                         continue;
 388                 }
 389                 if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
 390                     && libusb_get_device_address(devlist[i]) == devc->usb->address) {
 391                         dev = devlist[i];
 392                         break;
 393                 }
 394         }
 395         if (!dev) {
 396                 sr_err("Device on bus %d address %d disappeared!",
 397                        devc->usb->bus, devc->usb->address);
 398                 return SR_ERR;
 399         }
 400
 401         if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
 402                 sdi->status = SR_ST_ACTIVE;
 403                 sr_info("Opened device %d on %d.%d interface %d.",
 404                         sdi->index, devc->usb->bus,
 405                         devc->usb->address, USB_INTERFACE);
 406         } else {
 407                 sr_err("Failed to open device: %s.", libusb_error_name(ret));
 408                 return SR_ERR;
 409         }
 410
 411         ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
 412         if (ret < 0) {
 413                 sr_err("Unable to set USB configuration %d: %s.",
 414                        USB_CONFIGURATION, libusb_error_name(ret));
 415                 return SR_ERR;
 416         }
 417
 418         ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
 419         if (ret != 0) {
 420                 sr_err("Unable to claim interface: %s.",
 421                        libusb_error_name(ret));
 422                 return SR_ERR;
 423         }
 424
 425         /* Set default configuration after power on. */
 426         if (analyzer_read_status(devc->usb->devhdl) == 0)
 427                 analyzer_configure(devc->usb->devhdl);
 428
 429         analyzer_reset(devc->usb->devhdl);
 430         analyzer_initialize(devc->usb->devhdl);
 431
 432         //analyzer_set_memory_size(MEMORY_SIZE_512K);
 433         // analyzer_set_freq(g_freq, g_freq_scale);
 434         analyzer_set_trigger_count(1);
 435         // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
 436         // * get_memory_size(g_memory_size)) / 100) >> 2);
 437
 438 #if 0
 439         if (g_double_mode == 1)
 440                 analyzer_set_compression(COMPRESSION_DOUBLE);
 441         else if (g_compression == 1)
 442                 analyzer_set_compression(COMPRESSION_ENABLE);
 443         else
 444 #endif
 445         analyzer_set_compression(COMPRESSION_NONE);
 446
 447         if (devc->cur_samplerate == 0) {
 448                 /* Samplerate hasn't been set. Default to 1MHz. */
 449                 analyzer_set_freq(1, FREQ_SCALE_MHZ);
 450                 devc->cur_samplerate = SR_MHZ(1);
 451         }
 452
 453         return SR_OK;
 454 }
 455
 456 static int hw_dev_close(struct sr_dev_inst *sdi)
 457 {
 458         struct dev_context *devc;
 459
 460         devc = sdi->priv;
 461
 462         if (!devc->usb->devhdl)
 463                 return SR_ERR;
 464
 465         sr_info("Closing device %d on %d.%d interface %d.", sdi->index,
 466                 devc->usb->bus, devc->usb->address, USB_INTERFACE);
 467         libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
 468         libusb_reset_device(devc->usb->devhdl);
 469         libusb_close(devc->usb->devhdl);
 470         devc->usb->devhdl = NULL;
 471         sdi->status = SR_ST_INACTIVE;
 472
 473         return SR_OK;
 474 }
 475
 476 static int hw_cleanup(void)
 477 {
 478         struct drv_context *drvc;
 479
 480         if (!(drvc = di->priv))
 481                 return SR_OK;
 482
 483         clear_instances();
 484
 485         return SR_OK;
 486 }
 487
 488 static int config_get(int id, const void **data, const struct sr_dev_inst *sdi)
 489 {
 490         struct dev_context *devc;
 491
 492         switch (id) {
 493         case SR_CONF_SAMPLERATE:
 494                 if (sdi) {
 495                         devc = sdi->priv;
 496                         *data = &devc->cur_samplerate;
 497                         sr_spew("Returning samplerate: %" PRIu64 "Hz.",
 498                                 devc->cur_samplerate);
 499                 } else
 500                         return SR_ERR;
 501                 break;
 502         default:
 503                 return SR_ERR_ARG;
 504         }
 505
 506         return SR_OK;
 507 }
 508
 509 static int config_set(int id, const void *value, const struct sr_dev_inst *sdi)
 510 {
 511         struct dev_context *devc;
 512
 513         if (!sdi) {
 514                 sr_err("%s: sdi was NULL", __func__);
 515                 return SR_ERR_ARG;
 516         }
 517
 518         if (!(devc = sdi->priv)) {
 519                 sr_err("%s: sdi->priv was NULL", __func__);
 520                 return SR_ERR_ARG;
 521         }
 522
 523         switch (id) {
 524         case SR_CONF_SAMPLERATE:
 525                 return zp_set_samplerate(devc, *(const uint64_t *)value);
 526         case SR_CONF_LIMIT_SAMPLES:
 527                 return set_limit_samples(devc, *(const uint64_t *)value);
 528         case SR_CONF_CAPTURE_RATIO:
 529                 return set_capture_ratio(devc, *(const uint64_t *)value);
 530         default:
 531                 return SR_ERR;
 532         }
 533
 534         return SR_OK;
 535 }
 536
 537 static int config_list(int key, const void **data, const struct sr_dev_inst *sdi)
 538 {
 539         struct dev_context *devc;
 540
 541         switch (key) {
 542         case SR_CONF_DEVICE_OPTIONS:
 543                 *data = hwcaps;
 544                 break;
 545         case SR_CONF_SAMPLERATE:
 546                 devc = sdi->priv;
 547                 if (devc->prof->max_sampling_freq == 100) {
 548                         *data = &samplerates_100;
 549                 } else if (devc->prof->max_sampling_freq == 200) {
 550                         *data = &samplerates_200;
 551                 } else {
 552                         sr_err("Internal error: Unknown max. samplerate: %d.",
 553                                devc->prof->max_sampling_freq);
 554                         return SR_ERR_ARG;
 555                 }
 556                 break;
 557         case SR_CONF_TRIGGER_TYPE:
 558                 *data = TRIGGER_TYPE;
 559                 break;
 560         default:
 561                 return SR_ERR_ARG;
 562         }
 563
 564         return SR_OK;
 565 }
 566
 567 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 568                 void *cb_data)
 569 {
 570         struct sr_datafeed_packet packet;
 571         struct sr_datafeed_logic logic;
 572         //uint64_t samples_read;
 573         int res;
 574         unsigned int packet_num, n;
 575         unsigned char *buf;
 576         struct dev_context *devc;
 577
 578         if (!(devc = sdi->priv)) {
 579                 sr_err("%s: sdi->priv was NULL", __func__);
 580                 return SR_ERR_ARG;
 581         }
 582
 583         if (configure_probes(sdi) != SR_OK) {
 584                 sr_err("Failed to configure probes.");
 585                 return SR_ERR;
 586         }
 587
 588         set_triggerbar(devc);
 589
 590         /* Push configured settings to device. */
 591         analyzer_configure(devc->usb->devhdl);
 592
 593         analyzer_start(devc->usb->devhdl);
 594         sr_info("Waiting for data.");
 595         analyzer_wait_data(devc->usb->devhdl);
 596
 597         sr_info("Stop address    = 0x%x.",
 598                 analyzer_get_stop_address(devc->usb->devhdl));
 599         sr_info("Now address     = 0x%x.",
 600                 analyzer_get_now_address(devc->usb->devhdl));
 601         sr_info("Trigger address = 0x%x.",
 602                 analyzer_get_trigger_address(devc->usb->devhdl));
 603
 604         /* Send header packet to the session bus. */
 605         std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
 606
 607         if (!(buf = g_try_malloc(PACKET_SIZE))) {
 608                 sr_err("Packet buffer malloc failed.");
 609                 return SR_ERR_MALLOC;
 610         }
 611
 612         //samples_read = 0;
 613         analyzer_read_start(devc->usb->devhdl);
 614         /* Send the incoming transfer to the session bus. */
 615         n = get_memory_size(devc->memory_size);
 616         if (devc->max_memory_size * 4 < n)
 617                 n = devc->max_memory_size * 4;
 618         for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
 619                 res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
 620                 sr_info("Tried to read %d bytes, actually read %d bytes.",
 621                         PACKET_SIZE, res);
 622
 623                 packet.type = SR_DF_LOGIC;
 624                 packet.payload = &logic;
 625                 logic.length = PACKET_SIZE;
 626                 logic.unitsize = 4;
 627                 logic.data = buf;
 628                 sr_session_send(cb_data, &packet);
 629                 //samples_read += res / 4;
 630         }
 631         analyzer_read_stop(devc->usb->devhdl);
 632         g_free(buf);
 633
 634         packet.type = SR_DF_END;
 635         sr_session_send(cb_data, &packet);
 636
 637         return SR_OK;
 638 }
 639
 640 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
 641 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 642 {
 643         struct sr_datafeed_packet packet;
 644         struct dev_context *devc;
 645
 646         packet.type = SR_DF_END;
 647         sr_session_send(cb_data, &packet);
 648
 649         if (!(devc = sdi->priv)) {
 650                 sr_err("%s: sdi->priv was NULL", __func__);
 651                 return SR_ERR_BUG;
 652         }
 653
 654         analyzer_reset(devc->usb->devhdl);
 655         /* TODO: Need to cancel and free any queued up transfers. */
 656
 657         return SR_OK;
 658 }
 659
 660 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
 661         .name = "zeroplus-logic-cube",
 662         .longname = "ZEROPLUS Logic Cube LAP-C series",
 663         .api_version = 1,
 664         .init = hw_init,
 665         .cleanup = hw_cleanup,
 666         .scan = hw_scan,
 667         .dev_list = hw_dev_list,
 668         .dev_clear = hw_cleanup,
 669         .config_get = config_get,
 670         .config_set = config_set,
 671         .config_list = config_list,
 672         .dev_open = hw_dev_open,
 673         .dev_close = hw_dev_close,
 674         .dev_acquisition_start = hw_dev_acquisition_start,
 675         .dev_acquisition_stop = hw_dev_acquisition_stop,
 676         .priv = NULL,
 677 };