src/hardware/dreamsourcelab-dslogic/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
   5  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22 #include <math.h>
  23 #include "protocol.h"
  24
  25 static const struct dslogic_profile supported_device[] = {
  26         /* DreamSourceLab DSLogic */
  27         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  28                 "dreamsourcelab-dslogic-fx2.fw",
  29                 0, "DreamSourceLab", "DSLogic", 256 * 1024 * 1024},
  30         /* DreamSourceLab DSCope */
  31         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  32                 "dreamsourcelab-dscope-fx2.fw",
  33                 0, "DreamSourceLab", "DSCope", 256 * 1024 * 1024},
  34         /* DreamSourceLab DSLogic Pro */
  35         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  36                 "dreamsourcelab-dslogic-pro-fx2.fw",
  37                 0, "DreamSourceLab", "DSLogic", 256 * 1024 * 1024},
  38         /* DreamSourceLab DSLogic Plus */
  39         { 0x2a0e, 0x0020, "DreamSourceLab", "DSLogic Plus", NULL,
  40                 "dreamsourcelab-dslogic-plus-fx2.fw",
  41                 0, "DreamSourceLab", "DSLogic", 256 * 1024 * 1024},
  42         /* DreamSourceLab DSLogic Basic */
  43         { 0x2a0e, 0x0021, "DreamSourceLab", "DSLogic Basic", NULL,
  44                 "dreamsourcelab-dslogic-basic-fx2.fw",
  45                 0, "DreamSourceLab", "DSLogic", 256 * 1024},
  46
  47         ALL_ZERO
  48 };
  49
  50 static const uint32_t scanopts[] = {
  51         SR_CONF_CONN,
  52 };
  53
  54 static const uint32_t drvopts[] = {
  55         SR_CONF_LOGIC_ANALYZER,
  56 };
  57
  58 static const uint32_t devopts[] = {
  59         SR_CONF_CONTINUOUS | SR_CONF_SET | SR_CONF_GET,
  60         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
  61         SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  62         SR_CONF_CONN | SR_CONF_GET,
  63         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  64         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
  65         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
  66         SR_CONF_EXTERNAL_CLOCK | SR_CONF_GET | SR_CONF_SET,
  67         SR_CONF_CLOCK_EDGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  68 };
  69
  70 static const char *const signal_edge_names[] = {
  71         [DS_EDGE_RISING] = "rising",
  72         [DS_EDGE_FALLING] = "falling",
  73 };
  74
  75 static const struct {
  76         gdouble low;
  77         gdouble high;
  78 } voltage_thresholds[] = {
  79         { 0.7, 1.4 },
  80         { 1.4, 3.6 },
  81 };
  82
  83 static const uint64_t samplerates[] = {
  84         SR_KHZ(10),
  85         SR_KHZ(20),
  86         SR_KHZ(50),
  87         SR_KHZ(100),
  88         SR_KHZ(200),
  89         SR_KHZ(500),
  90         SR_MHZ(1),
  91         SR_MHZ(2),
  92         SR_MHZ(5),
  93         SR_MHZ(10),
  94         SR_MHZ(20),
  95         SR_MHZ(25),
  96         SR_MHZ(50),
  97         SR_MHZ(100),
  98         SR_MHZ(200),
  99         SR_MHZ(400),
 100 };
 101
 102 static gboolean is_plausible(const struct libusb_device_descriptor *des)
 103 {
 104         int i;
 105
 106         for (i = 0; supported_device[i].vid; i++) {
 107                 if (des->idVendor != supported_device[i].vid)
 108                         continue;
 109                 if (des->idProduct == supported_device[i].pid)
 110                         return TRUE;
 111         }
 112
 113         return FALSE;
 114 }
 115
 116 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 117 {
 118         struct drv_context *drvc;
 119         struct dev_context *devc;
 120         struct sr_dev_inst *sdi;
 121         struct sr_usb_dev_inst *usb;
 122         struct sr_channel *ch;
 123         struct sr_channel_group *cg;
 124         struct sr_config *src;
 125         const struct dslogic_profile *prof;
 126         GSList *l, *devices, *conn_devices;
 127         gboolean has_firmware;
 128         struct libusb_device_descriptor des;
 129         libusb_device **devlist;
 130         struct libusb_device_handle *hdl;
 131         int ret, i, j;
 132         const char *conn;
 133         char manufacturer[64], product[64], serial_num[64], connection_id[64];
 134         char channel_name[16];
 135
 136         drvc = di->context;
 137
 138         conn = NULL;
 139         for (l = options; l; l = l->next) {
 140                 src = l->data;
 141                 switch (src->key) {
 142                 case SR_CONF_CONN:
 143                         conn = g_variant_get_string(src->data, NULL);
 144                         break;
 145                 }
 146         }
 147         if (conn)
 148                 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
 149         else
 150                 conn_devices = NULL;
 151
 152         /* Find all DSLogic compatible devices and upload firmware to them. */
 153         devices = NULL;
 154         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 155         for (i = 0; devlist[i]; i++) {
 156                 if (conn) {
 157                         usb = NULL;
 158                         for (l = conn_devices; l; l = l->next) {
 159                                 usb = l->data;
 160                                 if (usb->bus == libusb_get_bus_number(devlist[i])
 161                                         && usb->address == libusb_get_device_address(devlist[i]))
 162                                         break;
 163                         }
 164                         if (!l)
 165                                 /* This device matched none of the ones that
 166                                  * matched the conn specification. */
 167                                 continue;
 168                 }
 169
 170                 libusb_get_device_descriptor(devlist[i], &des);
 171
 172                 if (!is_plausible(&des))
 173                         continue;
 174
 175                 if ((ret = libusb_open(devlist[i], &hdl)) < 0) {
 176                         sr_warn("Failed to open potential device with "
 177                                 "VID:PID %04x:%04x: %s.", des.idVendor,
 178                                 des.idProduct, libusb_error_name(ret));
 179                         continue;
 180                 }
 181
 182                 if (des.iManufacturer == 0) {
 183                         manufacturer[0] = '\0';
 184                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 185                                 des.iManufacturer, (unsigned char *) manufacturer,
 186                                 sizeof(manufacturer))) < 0) {
 187                         sr_warn("Failed to get manufacturer string descriptor: %s.",
 188                                 libusb_error_name(ret));
 189                         continue;
 190                 }
 191
 192                 if (des.iProduct == 0) {
 193                         product[0] = '\0';
 194                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 195                                 des.iProduct, (unsigned char *) product,
 196                                 sizeof(product))) < 0) {
 197                         sr_warn("Failed to get product string descriptor: %s.",
 198                                 libusb_error_name(ret));
 199                         continue;
 200                 }
 201
 202                 if (des.iSerialNumber == 0) {
 203                         serial_num[0] = '\0';
 204                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 205                                 des.iSerialNumber, (unsigned char *) serial_num,
 206                                 sizeof(serial_num))) < 0) {
 207                         sr_warn("Failed to get serial number string descriptor: %s.",
 208                                 libusb_error_name(ret));
 209                         continue;
 210                 }
 211
 212                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 213
 214                 libusb_close(hdl);
 215
 216                 prof = NULL;
 217                 for (j = 0; supported_device[j].vid; j++) {
 218                         if (des.idVendor == supported_device[j].vid &&
 219                                         des.idProduct == supported_device[j].pid) {
 220                                 prof = &supported_device[j];
 221                                 break;
 222                         }
 223                 }
 224
 225                 if (!prof)
 226                         continue;
 227
 228                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 229                 sdi->status = SR_ST_INITIALIZING;
 230                 sdi->vendor = g_strdup(prof->vendor);
 231                 sdi->model = g_strdup(prof->model);
 232                 sdi->version = g_strdup(prof->model_version);
 233                 sdi->serial_num = g_strdup(serial_num);
 234                 sdi->connection_id = g_strdup(connection_id);
 235
 236                 /* Logic channels, all in one channel group. */
 237                 cg = g_malloc0(sizeof(struct sr_channel_group));
 238                 cg->name = g_strdup("Logic");
 239                 for (j = 0; j < 16; j++) {
 240                         sprintf(channel_name, "%d", j);
 241                         ch = sr_channel_new(sdi, j, SR_CHANNEL_LOGIC,
 242                                                 TRUE, channel_name);
 243                         cg->channels = g_slist_append(cg->channels, ch);
 244                 }
 245                 sdi->channel_groups = g_slist_append(NULL, cg);
 246
 247                 devc = dslogic_dev_new();
 248                 devc->profile = prof;
 249                 sdi->priv = devc;
 250                 devices = g_slist_append(devices, sdi);
 251
 252                 devc->samplerates = samplerates;
 253                 devc->num_samplerates = ARRAY_SIZE(samplerates);
 254                 has_firmware = usb_match_manuf_prod(devlist[i], "DreamSourceLab", "USB-based Instrument");
 255
 256                 if (has_firmware) {
 257                         /* Already has the firmware, so fix the new address. */
 258                         sr_dbg("Found a DSLogic device.");
 259                         sdi->status = SR_ST_INACTIVE;
 260                         sdi->inst_type = SR_INST_USB;
 261                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 262                                         libusb_get_device_address(devlist[i]), NULL);
 263                 } else {
 264                         if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
 265                                         USB_CONFIGURATION, prof->firmware) == SR_OK)
 266                                 /* Store when this device's FW was updated. */
 267                                 devc->fw_updated = g_get_monotonic_time();
 268                         else
 269                                 sr_err("Firmware upload failed for "
 270                                        "device %d.%d (logical).",
 271                                        libusb_get_bus_number(devlist[i]),
 272                                        libusb_get_device_address(devlist[i]));
 273                         sdi->inst_type = SR_INST_USB;
 274                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 275                                         0xff, NULL);
 276                 }
 277         }
 278         libusb_free_device_list(devlist, 1);
 279         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 280
 281         return std_scan_complete(di, devices);
 282 }
 283
 284 static int dev_open(struct sr_dev_inst *sdi)
 285 {
 286         struct sr_dev_driver *di = sdi->driver;
 287         struct sr_usb_dev_inst *usb;
 288         struct dev_context *devc;
 289         int ret;
 290         int64_t timediff_us, timediff_ms;
 291
 292         devc = sdi->priv;
 293         usb = sdi->conn;
 294
 295         /*
 296          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 297          * milliseconds for the FX2 to renumerate.
 298          */
 299         ret = SR_ERR;
 300         if (devc->fw_updated > 0) {
 301                 sr_info("Waiting for device to reset.");
 302                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 303                 g_usleep(300 * 1000);
 304                 timediff_ms = 0;
 305                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 306                         if ((ret = dslogic_dev_open(sdi, di)) == SR_OK)
 307                                 break;
 308                         g_usleep(100 * 1000);
 309
 310                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 311                         timediff_ms = timediff_us / 1000;
 312                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 313                 }
 314                 if (ret != SR_OK) {
 315                         sr_err("Device failed to renumerate.");
 316                         return SR_ERR;
 317                 }
 318                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 319         } else {
 320                 sr_info("Firmware upload was not needed.");
 321                 ret = dslogic_dev_open(sdi, di);
 322         }
 323
 324         if (ret != SR_OK) {
 325                 sr_err("Unable to open device.");
 326                 return SR_ERR;
 327         }
 328
 329         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 330         if (ret != 0) {
 331                 switch (ret) {
 332                 case LIBUSB_ERROR_BUSY:
 333                         sr_err("Unable to claim USB interface. Another "
 334                                "program or driver has already claimed it.");
 335                         break;
 336                 case LIBUSB_ERROR_NO_DEVICE:
 337                         sr_err("Device has been disconnected.");
 338                         break;
 339                 default:
 340                         sr_err("Unable to claim interface: %s.",
 341                                libusb_error_name(ret));
 342                         break;
 343                 }
 344
 345                 return SR_ERR;
 346         }
 347
 348
 349         if ((ret = dslogic_fpga_firmware_upload(sdi)) != SR_OK)
 350                 return ret;
 351
 352         if (devc->cur_samplerate == 0) {
 353                 /* Samplerate hasn't been set; default to the slowest one. */
 354                 devc->cur_samplerate = devc->samplerates[0];
 355         }
 356
 357         if (devc->cur_threshold == 0.0)
 358                 devc->cur_threshold = 1.5;
 359
 360         return SR_OK;
 361 }
 362
 363 static int dev_close(struct sr_dev_inst *sdi)
 364 {
 365         struct sr_usb_dev_inst *usb;
 366
 367         usb = sdi->conn;
 368
 369         if (!usb->devhdl)
 370                 return SR_ERR_BUG;
 371
 372         sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
 373                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 374         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 375         libusb_close(usb->devhdl);
 376         usb->devhdl = NULL;
 377
 378         return SR_OK;
 379 }
 380
 381 static int config_get(uint32_t key, GVariant **data,
 382         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 383 {
 384         struct dev_context *devc;
 385         struct sr_usb_dev_inst *usb;
 386         GVariant *range[2];
 387         unsigned int i, voltage_range;
 388         char str[128];
 389
 390         (void)cg;
 391
 392         if (!sdi)
 393                 return SR_ERR_ARG;
 394
 395         devc = sdi->priv;
 396
 397         switch (key) {
 398         case SR_CONF_CONN:
 399                 if (!sdi->conn)
 400                         return SR_ERR_ARG;
 401                 usb = sdi->conn;
 402                 if (usb->address == 255)
 403                         /* Device still needs to re-enumerate after firmware
 404                          * upload, so we don't know its (future) address. */
 405                         return SR_ERR;
 406                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 407                 *data = g_variant_new_string(str);
 408                 break;
 409         case SR_CONF_VOLTAGE_THRESHOLD:
 410                 if (!strcmp(devc->profile->model, "DSLogic")) {
 411                         voltage_range = 0;
 412
 413                         for (i = 0; i < ARRAY_SIZE(voltage_thresholds); i++)
 414                                 if (voltage_thresholds[i].low == devc->cur_threshold) {
 415                                         voltage_range = i;
 416                                         break;
 417                                 }
 418
 419                         range[0] = g_variant_new_double(
 420                                 voltage_thresholds[voltage_range].low);
 421                         range[1] = g_variant_new_double(
 422                                 voltage_thresholds[voltage_range].high);
 423                 } else {
 424                         range[0] = g_variant_new_double(devc->cur_threshold);
 425                         range[1] = g_variant_new_double(devc->cur_threshold);
 426                 }
 427                 *data = g_variant_new_tuple(range, 2);
 428                 break;
 429         case SR_CONF_LIMIT_SAMPLES:
 430                 *data = g_variant_new_uint64(devc->limit_samples);
 431                 break;
 432         case SR_CONF_SAMPLERATE:
 433                 *data = g_variant_new_uint64(devc->cur_samplerate);
 434                 break;
 435         case SR_CONF_CAPTURE_RATIO:
 436                 *data = g_variant_new_uint64(devc->capture_ratio);
 437                 break;
 438         case SR_CONF_EXTERNAL_CLOCK:
 439                 *data = g_variant_new_boolean(devc->external_clock);
 440                 break;
 441         case SR_CONF_CONTINUOUS:
 442                 *data = g_variant_new_boolean(devc->continuous_mode);
 443                 break;
 444         case SR_CONF_CLOCK_EDGE:
 445                 i = devc->clock_edge;
 446                 if (i >= ARRAY_SIZE(signal_edge_names))
 447                         return SR_ERR_BUG;
 448                 *data = g_variant_new_string(signal_edge_names[0]);
 449                 break;
 450         default:
 451                 return SR_ERR_NA;
 452         }
 453
 454         return SR_OK;
 455 }
 456
 457 /*
 458  * Helper for mapping a string-typed configuration value to an index
 459  * within a table of possible values.
 460  */
 461 static int lookup_index(GVariant *value, const char *const *table, int len)
 462 {
 463         const char *entry;
 464         int i;
 465
 466         entry = g_variant_get_string(value, NULL);
 467         if (!entry)
 468                 return -1;
 469
 470         /* Linear search is fine for very small tables. */
 471         for (i = 0; i < len; i++) {
 472                 if (strcmp(entry, table[i]) == 0)
 473                         return i;
 474         }
 475
 476         return -1;
 477 }
 478
 479 static int config_set(uint32_t key, GVariant *data,
 480         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 481 {
 482         struct dev_context *devc;
 483         uint64_t arg;
 484         int i, ret;
 485         gdouble low, high;
 486
 487         (void)cg;
 488
 489         if (!sdi)
 490                 return SR_ERR_ARG;
 491
 492         devc = sdi->priv;
 493
 494         ret = SR_OK;
 495
 496         switch (key) {
 497         case SR_CONF_SAMPLERATE:
 498                 arg = g_variant_get_uint64(data);
 499                 for (i = 0; i < devc->num_samplerates; i++) {
 500                         if (devc->samplerates[i] == arg) {
 501                                 devc->cur_samplerate = arg;
 502                                 break;
 503                         }
 504                 }
 505                 if (i == devc->num_samplerates)
 506                         ret = SR_ERR_ARG;
 507                 break;
 508         case SR_CONF_LIMIT_SAMPLES:
 509                 devc->limit_samples = g_variant_get_uint64(data);
 510                 break;
 511         case SR_CONF_CAPTURE_RATIO:
 512                 devc->capture_ratio = g_variant_get_uint64(data);
 513                 ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK;
 514                 break;
 515         case SR_CONF_VOLTAGE_THRESHOLD:
 516                 g_variant_get(data, "(dd)", &low, &high);
 517                 if (!strcmp(devc->profile->model, "DSLogic")) {
 518                         for (i = 0; (unsigned int)i < ARRAY_SIZE(voltage_thresholds); i++) {
 519                                 if (fabs(voltage_thresholds[i].low - low) < 0.1 &&
 520                                     fabs(voltage_thresholds[i].high - high) < 0.1) {
 521                                         devc->cur_threshold =
 522                                                 voltage_thresholds[i].low;
 523                                         break;
 524                                 }
 525                         }
 526                         ret = dslogic_fpga_firmware_upload(sdi);
 527                 } else {
 528                         ret = dslogic_set_voltage_threshold(sdi, (low + high) / 2.0);
 529                 }
 530                 break;
 531         case SR_CONF_EXTERNAL_CLOCK:
 532                 devc->external_clock = g_variant_get_boolean(data);
 533                 break;
 534         case SR_CONF_CONTINUOUS:
 535                 devc->continuous_mode = g_variant_get_boolean(data);
 536                 break;
 537         case SR_CONF_CLOCK_EDGE:
 538                 i = lookup_index(data, signal_edge_names,
 539                                    ARRAY_SIZE(signal_edge_names));
 540                 if (i < 0)
 541                         return SR_ERR_ARG;
 542                 devc->clock_edge = i;
 543                 break;
 544         default:
 545                 ret = SR_ERR_NA;
 546         }
 547
 548         return ret;
 549 }
 550
 551 static int config_list(uint32_t key, GVariant **data,
 552         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 553 {
 554         struct dev_context *devc;
 555         GVariant *gvar, *range[2];
 556         GVariantBuilder gvb;
 557         unsigned int i;
 558
 559         devc = (sdi) ? sdi->priv : NULL;
 560
 561         switch (key) {
 562         case SR_CONF_SCAN_OPTIONS:
 563         case SR_CONF_DEVICE_OPTIONS:
 564                 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 565         case SR_CONF_VOLTAGE_THRESHOLD:
 566                 if (!strcmp(devc->profile->model, "DSLogic")) {
 567                         g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 568                         for (i = 0; i < ARRAY_SIZE(voltage_thresholds); i++) {
 569                                 range[0] = g_variant_new_double(voltage_thresholds[i].low);
 570                                 range[1] = g_variant_new_double(voltage_thresholds[i].high);
 571                                 gvar = g_variant_new_tuple(range, 2);
 572                                 g_variant_builder_add_value(&gvb, gvar);
 573                         }
 574                         *data = g_variant_builder_end(&gvb);
 575                 } else {
 576                         *data = std_gvar_min_max_step_thresholds(0.0, 5.0, 0.1);
 577                 }
 578                 break;
 579         case SR_CONF_SAMPLERATE:
 580                 *data = std_gvar_samplerates(devc->samplerates, devc->num_samplerates);
 581                 break;
 582         case SR_CONF_CLOCK_EDGE:
 583                 *data = g_variant_new_strv(signal_edge_names,
 584                         ARRAY_SIZE(signal_edge_names));
 585                 break;
 586         default:
 587                 return SR_ERR_NA;
 588         }
 589
 590         return SR_OK;
 591 }
 592
 593 static struct sr_dev_driver dreamsourcelab_dslogic_driver_info = {
 594         .name = "dreamsourcelab-dslogic",
 595         .longname = "DreamSourceLab DSLogic",
 596         .api_version = 1,
 597         .init = std_init,
 598         .cleanup = std_cleanup,
 599         .scan = scan,
 600         .dev_list = std_dev_list,
 601         .dev_clear = std_dev_clear,
 602         .config_get = config_get,
 603         .config_set = config_set,
 604         .config_list = config_list,
 605         .dev_open = dev_open,
 606         .dev_close = dev_close,
 607         .dev_acquisition_start = dslogic_acquisition_start,
 608         .dev_acquisition_stop = dslogic_acquisition_stop,
 609         .context = NULL,
 610 };
 611 SR_REGISTER_DEV_DRIVER(dreamsourcelab_dslogic_driver_info);