src/hardware/fx2lafw/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 "protocol.h"
  22
  23 static const struct fx2lafw_profile supported_fx2[] = {
  24         /*
  25          * CWAV USBee AX
  26          * EE Electronics ESLA201A
  27          * ARMFLY AX-Pro
  28          */
  29         { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
  30                 FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw",
  31                 0, NULL, NULL},
  32         /*
  33          * CWAV USBee DX
  34          * XZL-Studio DX
  35          */
  36         { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
  37                 FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw",
  38                 DEV_CAPS_16BIT, NULL, NULL },
  39
  40         /*
  41          * CWAV USBee SX
  42          */
  43         { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
  44                 FIRMWARE_DIR "/fx2lafw-cwav-usbeesx.fw",
  45                 0, NULL, NULL},
  46
  47         /*
  48          * Saleae Logic
  49          * EE Electronics ESLA100
  50          * Robomotic MiniLogic
  51          * Robomotic BugLogic 3
  52          */
  53         { 0x0925, 0x3881, "Saleae", "Logic", NULL,
  54                 FIRMWARE_DIR "/fx2lafw-saleae-logic.fw",
  55                 0, NULL, NULL},
  56
  57         /*
  58          * Default Cypress FX2 without EEPROM, e.g.:
  59          * Lcsoft Mini Board
  60          * Braintechnology USB Interface V2.x
  61          */
  62         { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
  63                 FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw",
  64                 DEV_CAPS_16BIT, NULL, NULL },
  65
  66         /*
  67          * Braintechnology USB-LPS
  68          */
  69         { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
  70                 FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw",
  71                 DEV_CAPS_16BIT, NULL, NULL },
  72
  73         { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
  74 };
  75
  76 static const uint32_t scanopts[] = {
  77         SR_CONF_CONN,
  78 };
  79
  80 static const uint32_t devopts[] = {
  81         SR_CONF_LOGIC_ANALYZER,
  82         SR_CONF_CONTINUOUS,
  83         SR_CONF_CONN | SR_CONF_GET,
  84         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  85         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
  86         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
  87 };
  88
  89 static const char *channel_names[] = {
  90         "0",  "1",  "2",  "3",  "4",  "5",  "6",  "7",
  91         "8",  "9", "10", "11", "12", "13", "14", "15",
  92         NULL,
  93 };
  94
  95 static const int32_t soft_trigger_matches[] = {
  96         SR_TRIGGER_ZERO,
  97         SR_TRIGGER_ONE,
  98         SR_TRIGGER_RISING,
  99         SR_TRIGGER_FALLING,
 100         SR_TRIGGER_EDGE,
 101 };
 102
 103 static const uint64_t samplerates[] = {
 104         SR_KHZ(20),
 105         SR_KHZ(25),
 106         SR_KHZ(50),
 107         SR_KHZ(100),
 108         SR_KHZ(200),
 109         SR_KHZ(250),
 110         SR_KHZ(500),
 111         SR_MHZ(1),
 112         SR_MHZ(2),
 113         SR_MHZ(3),
 114         SR_MHZ(4),
 115         SR_MHZ(6),
 116         SR_MHZ(8),
 117         SR_MHZ(12),
 118         SR_MHZ(16),
 119         SR_MHZ(24),
 120 };
 121
 122 SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
 123 static struct sr_dev_driver *di = &fx2lafw_driver_info;
 124
 125 static int init(struct sr_context *sr_ctx)
 126 {
 127         return std_init(sr_ctx, di, LOG_PREFIX);
 128 }
 129
 130 static GSList *scan(GSList *options)
 131 {
 132         struct drv_context *drvc;
 133         struct dev_context *devc;
 134         struct sr_dev_inst *sdi;
 135         struct sr_usb_dev_inst *usb;
 136         struct sr_channel *ch;
 137         struct sr_config *src;
 138         const struct fx2lafw_profile *prof;
 139         GSList *l, *devices, *conn_devices;
 140         struct libusb_device_descriptor des;
 141         libusb_device **devlist;
 142         struct libusb_device_handle *hdl;
 143         int num_logic_channels, ret, i, j;
 144         const char *conn;
 145         char manufacturer[64], product[64], serial_num[64], connection_id[64];
 146
 147         drvc = di->priv;
 148
 149         conn = NULL;
 150         for (l = options; l; l = l->next) {
 151                 src = l->data;
 152                 switch (src->key) {
 153                 case SR_CONF_CONN:
 154                         conn = g_variant_get_string(src->data, NULL);
 155                         break;
 156                 }
 157         }
 158         if (conn)
 159                 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
 160         else
 161                 conn_devices = NULL;
 162
 163         /* Find all fx2lafw compatible devices and upload firmware to them. */
 164         devices = NULL;
 165         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 166         for (i = 0; devlist[i]; i++) {
 167                 if (conn) {
 168                         usb = NULL;
 169                         for (l = conn_devices; l; l = l->next) {
 170                                 usb = l->data;
 171                                 if (usb->bus == libusb_get_bus_number(devlist[i])
 172                                         && usb->address == libusb_get_device_address(devlist[i]))
 173                                         break;
 174                         }
 175                         if (!l)
 176                                 /* This device matched none of the ones that
 177                                  * matched the conn specification. */
 178                                 continue;
 179                 }
 180
 181                 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
 182                         sr_warn("Failed to get device descriptor: %s.",
 183                                 libusb_error_name(ret));
 184                         continue;
 185                 }
 186
 187                 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
 188                         continue;
 189
 190                 if (des.iManufacturer == 0) {
 191                         manufacturer[0] = '\0';
 192                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 193                                 des.iManufacturer, (unsigned char *) manufacturer,
 194                                 sizeof(manufacturer))) < 0) {
 195                         sr_warn("Failed to get manufacturer string descriptor: %s.",
 196                                 libusb_error_name(ret));
 197                         continue;
 198                 }
 199
 200                 if (des.iProduct == 0) {
 201                         product[0] = '\0';
 202                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 203                                 des.iProduct, (unsigned char *) product,
 204                                 sizeof(product))) < 0) {
 205                         sr_warn("Failed to get product string descriptor: %s.",
 206                                 libusb_error_name(ret));
 207                         continue;
 208                 }
 209
 210                 if (des.iSerialNumber == 0) {
 211                         serial_num[0] = '\0';
 212                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 213                                 des.iSerialNumber, (unsigned char *) serial_num,
 214                                 sizeof(serial_num))) < 0) {
 215                         sr_warn("Failed to get serial number string descriptor: %s.",
 216                                 libusb_error_name(ret));
 217                         continue;
 218                 }
 219
 220                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 221
 222                 libusb_close(hdl);
 223
 224                 prof = NULL;
 225                 for (j = 0; supported_fx2[j].vid; j++) {
 226                         if (des.idVendor == supported_fx2[j].vid &&
 227                                         des.idProduct == supported_fx2[j].pid &&
 228                                         (!supported_fx2[j].usb_manufacturer ||
 229                                          !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
 230                                         (!supported_fx2[j].usb_manufacturer ||
 231                                          !strcmp(product, supported_fx2[j].usb_product))) {
 232                                 prof = &supported_fx2[j];
 233                                 break;
 234                         }
 235                 }
 236
 237                 /* Skip if the device was not found. */
 238                 if (!prof)
 239                         continue;
 240
 241                 sdi = sr_dev_inst_new();
 242                 sdi->status = SR_ST_INITIALIZING;
 243                 sdi->vendor = g_strdup(prof->vendor);
 244                 sdi->model = g_strdup(prof->model);
 245                 sdi->version = g_strdup(prof->model_version);
 246                 sdi->driver = di;
 247                 sdi->serial_num = g_strdup(serial_num);
 248                 sdi->connection_id = g_strdup(connection_id);
 249
 250                 /* Fill in channellist according to this device's profile. */
 251                 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
 252                 for (j = 0; j < num_logic_channels; j++) {
 253                         if (!(ch = sr_channel_new(j, SR_CHANNEL_LOGIC, TRUE,
 254                                         channel_names[j])))
 255                                 return NULL;
 256                         sdi->channels = g_slist_append(sdi->channels, ch);
 257                 }
 258
 259                 devc = fx2lafw_dev_new();
 260                 devc->profile = prof;
 261                 devc->sample_wide = (prof->dev_caps & DEV_CAPS_16BIT) != 0;
 262                 sdi->priv = devc;
 263                 drvc->instances = g_slist_append(drvc->instances, sdi);
 264                 devices = g_slist_append(devices, sdi);
 265
 266                 if (fx2lafw_check_conf_profile(devlist[i])) {
 267                         /* Already has the firmware, so fix the new address. */
 268                         sr_dbg("Found an fx2lafw device.");
 269                         sdi->status = SR_ST_INACTIVE;
 270                         sdi->inst_type = SR_INST_USB;
 271                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 272                                         libusb_get_device_address(devlist[i]), NULL);
 273                 } else {
 274                         if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
 275                                 prof->firmware) == SR_OK)
 276                                 /* Store when this device's FW was updated. */
 277                                 devc->fw_updated = g_get_monotonic_time();
 278                         else
 279                                 sr_err("Firmware upload failed for "
 280                                        "device %d.%d (logical).",
 281                                        libusb_get_bus_number(devlist[i]),
 282                                        libusb_get_device_address(devlist[i]));
 283                         sdi->inst_type = SR_INST_USB;
 284                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 285                                         0xff, NULL);
 286                 }
 287         }
 288         libusb_free_device_list(devlist, 1);
 289         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 290
 291         return devices;
 292 }
 293
 294 static GSList *dev_list(void)
 295 {
 296         return ((struct drv_context *)(di->priv))->instances;
 297 }
 298
 299 static int dev_open(struct sr_dev_inst *sdi)
 300 {
 301         struct sr_usb_dev_inst *usb;
 302         struct dev_context *devc;
 303         int ret;
 304         int64_t timediff_us, timediff_ms;
 305
 306         devc = sdi->priv;
 307         usb = sdi->conn;
 308
 309         /*
 310          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 311          * milliseconds for the FX2 to renumerate.
 312          */
 313         ret = SR_ERR;
 314         if (devc->fw_updated > 0) {
 315                 sr_info("Waiting for device to reset.");
 316                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 317                 g_usleep(300 * 1000);
 318                 timediff_ms = 0;
 319                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 320                         if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
 321                                 break;
 322                         g_usleep(100 * 1000);
 323
 324                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 325                         timediff_ms = timediff_us / 1000;
 326                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 327                 }
 328                 if (ret != SR_OK) {
 329                         sr_err("Device failed to renumerate.");
 330                         return SR_ERR;
 331                 }
 332                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 333         } else {
 334                 sr_info("Firmware upload was not needed.");
 335                 ret = fx2lafw_dev_open(sdi, di);
 336         }
 337
 338         if (ret != SR_OK) {
 339                 sr_err("Unable to open device.");
 340                 return SR_ERR;
 341         }
 342
 343         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 344         if (ret != 0) {
 345                 switch (ret) {
 346                 case LIBUSB_ERROR_BUSY:
 347                         sr_err("Unable to claim USB interface. Another "
 348                                "program or driver has already claimed it.");
 349                         break;
 350                 case LIBUSB_ERROR_NO_DEVICE:
 351                         sr_err("Device has been disconnected.");
 352                         break;
 353                 default:
 354                         sr_err("Unable to claim interface: %s.",
 355                                libusb_error_name(ret));
 356                         break;
 357                 }
 358
 359                 return SR_ERR;
 360         }
 361
 362         if (devc->cur_samplerate == 0) {
 363                 /* Samplerate hasn't been set; default to the slowest one. */
 364                 devc->cur_samplerate = samplerates[0];
 365         }
 366
 367         return SR_OK;
 368 }
 369
 370 static int dev_close(struct sr_dev_inst *sdi)
 371 {
 372         struct sr_usb_dev_inst *usb;
 373
 374         usb = sdi->conn;
 375         if (usb->devhdl == NULL)
 376                 return SR_ERR;
 377
 378         sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
 379                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 380         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 381         libusb_close(usb->devhdl);
 382         usb->devhdl = NULL;
 383         sdi->status = SR_ST_INACTIVE;
 384
 385         return SR_OK;
 386 }
 387
 388 static int cleanup(void)
 389 {
 390         int ret;
 391         struct drv_context *drvc;
 392
 393         if (!(drvc = di->priv))
 394                 return SR_OK;
 395
 396         ret = std_dev_clear(di, NULL);
 397
 398         g_free(drvc);
 399         di->priv = NULL;
 400
 401         return ret;
 402 }
 403
 404 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 405                 const struct sr_channel_group *cg)
 406 {
 407         struct dev_context *devc;
 408         struct sr_usb_dev_inst *usb;
 409         char str[128];
 410
 411         (void)cg;
 412
 413         if (!sdi)
 414                 return SR_ERR_ARG;
 415
 416         devc = sdi->priv;
 417
 418         switch (key) {
 419         case SR_CONF_CONN:
 420                 if (!sdi->conn)
 421                         return SR_ERR_ARG;
 422                 usb = sdi->conn;
 423                 if (usb->address == 255)
 424                         /* Device still needs to re-enumerate after firmware
 425                          * upload, so we don't know its (future) address. */
 426                         return SR_ERR;
 427                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 428                 *data = g_variant_new_string(str);
 429                 break;
 430         case SR_CONF_LIMIT_SAMPLES:
 431                 *data = g_variant_new_uint64(devc->limit_samples);
 432                 break;
 433         case SR_CONF_SAMPLERATE:
 434                 *data = g_variant_new_uint64(devc->cur_samplerate);
 435                 break;
 436         default:
 437                 return SR_ERR_NA;
 438         }
 439
 440         return SR_OK;
 441 }
 442
 443 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 444                 const struct sr_channel_group *cg)
 445 {
 446         struct dev_context *devc;
 447         uint64_t arg;
 448         unsigned int i;
 449         int ret;
 450
 451         (void)cg;
 452
 453         if (!sdi)
 454                 return SR_ERR_ARG;
 455
 456         if (sdi->status != SR_ST_ACTIVE)
 457                 return SR_ERR;
 458
 459         devc = sdi->priv;
 460
 461         ret = SR_OK;
 462
 463         switch (key) {
 464                 case SR_CONF_SAMPLERATE:
 465                         arg = g_variant_get_uint64(data);
 466                         for (i = 0; i < ARRAY_SIZE(samplerates); i++) {
 467                                 if (samplerates[i] == arg) {
 468                                         devc->cur_samplerate = arg;
 469                                         break;
 470                                 }
 471                         }
 472                         if (i == ARRAY_SIZE(samplerates))
 473                                 ret = SR_ERR_ARG;
 474                         break;
 475                 case SR_CONF_LIMIT_SAMPLES:
 476                         devc->limit_samples = g_variant_get_uint64(data);
 477                         break;
 478                 default:
 479                         ret = SR_ERR_NA;
 480         }
 481
 482         return ret;
 483 }
 484
 485 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 486                 const struct sr_channel_group *cg)
 487 {
 488         GVariant *gvar;
 489         GVariantBuilder gvb;
 490
 491         (void)sdi;
 492         (void)cg;
 493
 494         switch (key) {
 495         case SR_CONF_SCAN_OPTIONS:
 496                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 497                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 498                 break;
 499         case SR_CONF_DEVICE_OPTIONS:
 500                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 501                                 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 502                 break;
 503         case SR_CONF_SAMPLERATE:
 504                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 505                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
 506                                 ARRAY_SIZE(samplerates), sizeof(uint64_t));
 507                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 508                 *data = g_variant_builder_end(&gvb);
 509                 break;
 510         case SR_CONF_TRIGGER_MATCH:
 511                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 512                                 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
 513                                 sizeof(int32_t));
 514                 break;
 515         default:
 516                 return SR_ERR_NA;
 517         }
 518
 519         return SR_OK;
 520 }
 521
 522 static int receive_data(int fd, int revents, void *cb_data)
 523 {
 524         struct timeval tv;
 525         struct drv_context *drvc;
 526
 527         (void)fd;
 528         (void)revents;
 529         (void)cb_data;
 530
 531         drvc = di->priv;
 532
 533         tv.tv_sec = tv.tv_usec = 0;
 534         libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
 535
 536         return TRUE;
 537 }
 538
 539 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 540 {
 541         struct dev_context *devc;
 542         struct drv_context *drvc;
 543         struct sr_usb_dev_inst *usb;
 544         struct sr_trigger *trigger;
 545         struct libusb_transfer *transfer;
 546         unsigned int i, timeout, num_transfers;
 547         int ret;
 548         unsigned char *buf;
 549         size_t size;
 550
 551         if (sdi->status != SR_ST_ACTIVE)
 552                 return SR_ERR_DEV_CLOSED;
 553
 554         drvc = di->priv;
 555         devc = sdi->priv;
 556         usb = sdi->conn;
 557
 558         devc->cb_data = cb_data;
 559         devc->sent_samples = 0;
 560         devc->acq_aborted = FALSE;
 561         devc->empty_transfer_count = 0;
 562
 563         if ((trigger = sr_session_trigger_get(sdi->session))) {
 564                 devc->stl = soft_trigger_logic_new(sdi, trigger);
 565                 devc->trigger_fired = FALSE;
 566         } else
 567                 devc->trigger_fired = TRUE;
 568
 569         timeout = fx2lafw_get_timeout(devc);
 570         num_transfers = fx2lafw_get_number_of_transfers(devc);
 571         size = fx2lafw_get_buffer_size(devc);
 572         devc->submitted_transfers = 0;
 573
 574         devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
 575         if (!devc->transfers) {
 576                 sr_err("USB transfers malloc failed.");
 577                 return SR_ERR_MALLOC;
 578         }
 579
 580         devc->num_transfers = num_transfers;
 581         for (i = 0; i < num_transfers; i++) {
 582                 if (!(buf = g_try_malloc(size))) {
 583                         sr_err("USB transfer buffer malloc failed.");
 584                         return SR_ERR_MALLOC;
 585                 }
 586                 transfer = libusb_alloc_transfer(0);
 587                 libusb_fill_bulk_transfer(transfer, usb->devhdl,
 588                                 2 | LIBUSB_ENDPOINT_IN, buf, size,
 589                                 fx2lafw_receive_transfer, (void *)sdi, timeout);
 590                 if ((ret = libusb_submit_transfer(transfer)) != 0) {
 591                         sr_err("Failed to submit transfer: %s.",
 592                                libusb_error_name(ret));
 593                         libusb_free_transfer(transfer);
 594                         g_free(buf);
 595                         fx2lafw_abort_acquisition(devc);
 596                         return SR_ERR;
 597                 }
 598                 devc->transfers[i] = transfer;
 599                 devc->submitted_transfers++;
 600         }
 601
 602         devc->ctx = drvc->sr_ctx;
 603
 604         usb_source_add(sdi->session, devc->ctx, timeout, receive_data, NULL);
 605
 606         /* Send header packet to the session bus. */
 607         std_session_send_df_header(cb_data, LOG_PREFIX);
 608
 609         if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
 610                 fx2lafw_abort_acquisition(devc);
 611                 return ret;
 612         }
 613
 614         return SR_OK;
 615 }
 616
 617 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 618 {
 619         (void)cb_data;
 620
 621         fx2lafw_abort_acquisition(sdi->priv);
 622
 623         return SR_OK;
 624 }
 625
 626 SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
 627         .name = "fx2lafw",
 628         .longname = "fx2lafw (generic driver for FX2 based LAs)",
 629         .api_version = 1,
 630         .init = init,
 631         .cleanup = cleanup,
 632         .scan = scan,
 633         .dev_list = dev_list,
 634         .dev_clear = NULL,
 635         .config_get = config_get,
 636         .config_set = config_set,
 637         .config_list = config_list,
 638         .dev_open = dev_open,
 639         .dev_close = dev_close,
 640         .dev_acquisition_start = dev_acquisition_start,
 641         .dev_acquisition_stop = dev_acquisition_stop,
 642         .priv = NULL,
 643 };