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 drvopts[] = {
  77         SR_CONF_LOGIC_ANALYZER,
  78 };
  79
  80 static const uint32_t scanopts[] = {
  81         SR_CONF_CONN,
  82 };
  83
  84 static const uint32_t devopts[] = {
  85         SR_CONF_CONTINUOUS | SR_CONF_SET,
  86         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
  87         SR_CONF_CONN | SR_CONF_GET,
  88         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  89         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
  90 };
  91
  92 static const char *channel_names[] = {
  93         "0",  "1",  "2",  "3",  "4",  "5",  "6",  "7",
  94         "8",  "9", "10", "11", "12", "13", "14", "15",
  95         NULL,
  96 };
  97
  98 static const int32_t soft_trigger_matches[] = {
  99         SR_TRIGGER_ZERO,
 100         SR_TRIGGER_ONE,
 101         SR_TRIGGER_RISING,
 102         SR_TRIGGER_FALLING,
 103         SR_TRIGGER_EDGE,
 104 };
 105
 106 static const uint64_t samplerates[] = {
 107         SR_KHZ(20),
 108         SR_KHZ(25),
 109         SR_KHZ(50),
 110         SR_KHZ(100),
 111         SR_KHZ(200),
 112         SR_KHZ(250),
 113         SR_KHZ(500),
 114         SR_MHZ(1),
 115         SR_MHZ(2),
 116         SR_MHZ(3),
 117         SR_MHZ(4),
 118         SR_MHZ(6),
 119         SR_MHZ(8),
 120         SR_MHZ(12),
 121         SR_MHZ(16),
 122         SR_MHZ(24),
 123 };
 124
 125 SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
 126 static struct sr_dev_driver *di = &fx2lafw_driver_info;
 127
 128 static int init(struct sr_context *sr_ctx)
 129 {
 130         return std_init(sr_ctx, di, LOG_PREFIX);
 131 }
 132
 133 static GSList *scan(GSList *options)
 134 {
 135         struct drv_context *drvc;
 136         struct dev_context *devc;
 137         struct sr_dev_inst *sdi;
 138         struct sr_usb_dev_inst *usb;
 139         struct sr_channel *ch;
 140         struct sr_config *src;
 141         const struct fx2lafw_profile *prof;
 142         GSList *l, *devices, *conn_devices;
 143         struct libusb_device_descriptor des;
 144         libusb_device **devlist;
 145         struct libusb_device_handle *hdl;
 146         int num_logic_channels, ret, i, j;
 147         const char *conn;
 148         char manufacturer[64], product[64], serial_num[64], connection_id[64];
 149
 150         drvc = di->priv;
 151
 152         conn = NULL;
 153         for (l = options; l; l = l->next) {
 154                 src = l->data;
 155                 switch (src->key) {
 156                 case SR_CONF_CONN:
 157                         conn = g_variant_get_string(src->data, NULL);
 158                         break;
 159                 }
 160         }
 161         if (conn)
 162                 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
 163         else
 164                 conn_devices = NULL;
 165
 166         /* Find all fx2lafw compatible devices and upload firmware to them. */
 167         devices = NULL;
 168         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 169         for (i = 0; devlist[i]; i++) {
 170                 if (conn) {
 171                         usb = NULL;
 172                         for (l = conn_devices; l; l = l->next) {
 173                                 usb = l->data;
 174                                 if (usb->bus == libusb_get_bus_number(devlist[i])
 175                                         && usb->address == libusb_get_device_address(devlist[i]))
 176                                         break;
 177                         }
 178                         if (!l)
 179                                 /* This device matched none of the ones that
 180                                  * matched the conn specification. */
 181                                 continue;
 182                 }
 183
 184                 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
 185                         sr_warn("Failed to get device descriptor: %s.",
 186                                 libusb_error_name(ret));
 187                         continue;
 188                 }
 189
 190                 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
 191                         continue;
 192
 193                 if (des.iManufacturer == 0) {
 194                         manufacturer[0] = '\0';
 195                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 196                                 des.iManufacturer, (unsigned char *) manufacturer,
 197                                 sizeof(manufacturer))) < 0) {
 198                         sr_warn("Failed to get manufacturer string descriptor: %s.",
 199                                 libusb_error_name(ret));
 200                         continue;
 201                 }
 202
 203                 if (des.iProduct == 0) {
 204                         product[0] = '\0';
 205                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 206                                 des.iProduct, (unsigned char *) product,
 207                                 sizeof(product))) < 0) {
 208                         sr_warn("Failed to get product string descriptor: %s.",
 209                                 libusb_error_name(ret));
 210                         continue;
 211                 }
 212
 213                 if (des.iSerialNumber == 0) {
 214                         serial_num[0] = '\0';
 215                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 216                                 des.iSerialNumber, (unsigned char *) serial_num,
 217                                 sizeof(serial_num))) < 0) {
 218                         sr_warn("Failed to get serial number string descriptor: %s.",
 219                                 libusb_error_name(ret));
 220                         continue;
 221                 }
 222
 223                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 224
 225                 libusb_close(hdl);
 226
 227                 prof = NULL;
 228                 for (j = 0; supported_fx2[j].vid; j++) {
 229                         if (des.idVendor == supported_fx2[j].vid &&
 230                                         des.idProduct == supported_fx2[j].pid &&
 231                                         (!supported_fx2[j].usb_manufacturer ||
 232                                          !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
 233                                         (!supported_fx2[j].usb_manufacturer ||
 234                                          !strcmp(product, supported_fx2[j].usb_product))) {
 235                                 prof = &supported_fx2[j];
 236                                 break;
 237                         }
 238                 }
 239
 240                 /* Skip if the device was not found. */
 241                 if (!prof)
 242                         continue;
 243
 244                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 245                 sdi->status = SR_ST_INITIALIZING;
 246                 sdi->vendor = g_strdup(prof->vendor);
 247                 sdi->model = g_strdup(prof->model);
 248                 sdi->version = g_strdup(prof->model_version);
 249                 sdi->driver = di;
 250                 sdi->serial_num = g_strdup(serial_num);
 251                 sdi->connection_id = g_strdup(connection_id);
 252
 253                 /* Fill in channellist according to this device's profile. */
 254                 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
 255                 for (j = 0; j < num_logic_channels; j++) {
 256                         ch = sr_channel_new(j, SR_CHANNEL_LOGIC, TRUE,
 257                                         channel_names[j]);
 258                         sdi->channels = g_slist_append(sdi->channels, ch);
 259                 }
 260
 261                 devc = fx2lafw_dev_new();
 262                 devc->profile = prof;
 263                 devc->sample_wide = (prof->dev_caps & DEV_CAPS_16BIT) != 0;
 264                 sdi->priv = devc;
 265                 drvc->instances = g_slist_append(drvc->instances, sdi);
 266                 devices = g_slist_append(devices, sdi);
 267
 268                 if (fx2lafw_check_conf_profile(devlist[i])) {
 269                         /* Already has the firmware, so fix the new address. */
 270                         sr_dbg("Found an fx2lafw device.");
 271                         sdi->status = SR_ST_INACTIVE;
 272                         sdi->inst_type = SR_INST_USB;
 273                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 274                                         libusb_get_device_address(devlist[i]), NULL);
 275                 } else {
 276                         if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
 277                                 prof->firmware) == SR_OK)
 278                                 /* Store when this device's FW was updated. */
 279                                 devc->fw_updated = g_get_monotonic_time();
 280                         else
 281                                 sr_err("Firmware upload failed for "
 282                                        "device %d.%d (logical).",
 283                                        libusb_get_bus_number(devlist[i]),
 284                                        libusb_get_device_address(devlist[i]));
 285                         sdi->inst_type = SR_INST_USB;
 286                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 287                                         0xff, NULL);
 288                 }
 289         }
 290         libusb_free_device_list(devlist, 1);
 291         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 292
 293         return devices;
 294 }
 295
 296 static GSList *dev_list(void)
 297 {
 298         return ((struct drv_context *)(di->priv))->instances;
 299 }
 300
 301 static int dev_open(struct sr_dev_inst *sdi)
 302 {
 303         struct sr_usb_dev_inst *usb;
 304         struct dev_context *devc;
 305         int ret;
 306         int64_t timediff_us, timediff_ms;
 307
 308         devc = sdi->priv;
 309         usb = sdi->conn;
 310
 311         /*
 312          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 313          * milliseconds for the FX2 to renumerate.
 314          */
 315         ret = SR_ERR;
 316         if (devc->fw_updated > 0) {
 317                 sr_info("Waiting for device to reset.");
 318                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 319                 g_usleep(300 * 1000);
 320                 timediff_ms = 0;
 321                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 322                         if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
 323                                 break;
 324                         g_usleep(100 * 1000);
 325
 326                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 327                         timediff_ms = timediff_us / 1000;
 328                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 329                 }
 330                 if (ret != SR_OK) {
 331                         sr_err("Device failed to renumerate.");
 332                         return SR_ERR;
 333                 }
 334                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 335         } else {
 336                 sr_info("Firmware upload was not needed.");
 337                 ret = fx2lafw_dev_open(sdi, di);
 338         }
 339
 340         if (ret != SR_OK) {
 341                 sr_err("Unable to open device.");
 342                 return SR_ERR;
 343         }
 344
 345         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 346         if (ret != 0) {
 347                 switch (ret) {
 348                 case LIBUSB_ERROR_BUSY:
 349                         sr_err("Unable to claim USB interface. Another "
 350                                "program or driver has already claimed it.");
 351                         break;
 352                 case LIBUSB_ERROR_NO_DEVICE:
 353                         sr_err("Device has been disconnected.");
 354                         break;
 355                 default:
 356                         sr_err("Unable to claim interface: %s.",
 357                                libusb_error_name(ret));
 358                         break;
 359                 }
 360
 361                 return SR_ERR;
 362         }
 363
 364         if (devc->cur_samplerate == 0) {
 365                 /* Samplerate hasn't been set; default to the slowest one. */
 366                 devc->cur_samplerate = samplerates[0];
 367         }
 368
 369         return SR_OK;
 370 }
 371
 372 static int dev_close(struct sr_dev_inst *sdi)
 373 {
 374         struct sr_usb_dev_inst *usb;
 375
 376         usb = sdi->conn;
 377         if (usb->devhdl == NULL)
 378                 return SR_ERR;
 379
 380         sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
 381                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 382         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 383         libusb_close(usb->devhdl);
 384         usb->devhdl = NULL;
 385         sdi->status = SR_ST_INACTIVE;
 386
 387         return SR_OK;
 388 }
 389
 390 static int cleanup(void)
 391 {
 392         int ret;
 393         struct drv_context *drvc;
 394
 395         if (!(drvc = di->priv))
 396                 return SR_OK;
 397
 398         ret = std_dev_clear(di, NULL);
 399
 400         g_free(drvc);
 401         di->priv = NULL;
 402
 403         return ret;
 404 }
 405
 406 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 407                 const struct sr_channel_group *cg)
 408 {
 409         struct dev_context *devc;
 410         struct sr_usb_dev_inst *usb;
 411         char str[128];
 412
 413         (void)cg;
 414
 415         if (!sdi)
 416                 return SR_ERR_ARG;
 417
 418         devc = sdi->priv;
 419
 420         switch (key) {
 421         case SR_CONF_CONN:
 422                 if (!sdi->conn)
 423                         return SR_ERR_ARG;
 424                 usb = sdi->conn;
 425                 if (usb->address == 255)
 426                         /* Device still needs to re-enumerate after firmware
 427                          * upload, so we don't know its (future) address. */
 428                         return SR_ERR;
 429                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 430                 *data = g_variant_new_string(str);
 431                 break;
 432         case SR_CONF_LIMIT_SAMPLES:
 433                 *data = g_variant_new_uint64(devc->limit_samples);
 434                 break;
 435         case SR_CONF_SAMPLERATE:
 436                 *data = g_variant_new_uint64(devc->cur_samplerate);
 437                 break;
 438         default:
 439                 return SR_ERR_NA;
 440         }
 441
 442         return SR_OK;
 443 }
 444
 445 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 446                 const struct sr_channel_group *cg)
 447 {
 448         struct dev_context *devc;
 449         uint64_t arg;
 450         unsigned int i;
 451         int ret;
 452
 453         (void)cg;
 454
 455         if (!sdi)
 456                 return SR_ERR_ARG;
 457
 458         if (sdi->status != SR_ST_ACTIVE)
 459                 return SR_ERR;
 460
 461         devc = sdi->priv;
 462
 463         ret = SR_OK;
 464
 465         switch (key) {
 466                 case SR_CONF_SAMPLERATE:
 467                         arg = g_variant_get_uint64(data);
 468                         for (i = 0; i < ARRAY_SIZE(samplerates); i++) {
 469                                 if (samplerates[i] == arg) {
 470                                         devc->cur_samplerate = arg;
 471                                         break;
 472                                 }
 473                         }
 474                         if (i == ARRAY_SIZE(samplerates))
 475                                 ret = SR_ERR_ARG;
 476                         break;
 477                 case SR_CONF_LIMIT_SAMPLES:
 478                         devc->limit_samples = g_variant_get_uint64(data);
 479                         break;
 480                 default:
 481                         ret = SR_ERR_NA;
 482         }
 483
 484         return ret;
 485 }
 486
 487 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 488                 const struct sr_channel_group *cg)
 489 {
 490         GVariant *gvar;
 491         GVariantBuilder gvb;
 492
 493         (void)sdi;
 494         (void)cg;
 495
 496         switch (key) {
 497         case SR_CONF_SCAN_OPTIONS:
 498                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 499                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 500                 break;
 501         case SR_CONF_DEVICE_OPTIONS:
 502                 if (!sdi)
 503                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 504                                         drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 505                 else
 506                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 507                                         devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 508                 break;
 509         case SR_CONF_SAMPLERATE:
 510                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 511                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
 512                                 ARRAY_SIZE(samplerates), sizeof(uint64_t));
 513                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 514                 *data = g_variant_builder_end(&gvb);
 515                 break;
 516         case SR_CONF_TRIGGER_MATCH:
 517                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 518                                 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
 519                                 sizeof(int32_t));
 520                 break;
 521         default:
 522                 return SR_ERR_NA;
 523         }
 524
 525         return SR_OK;
 526 }
 527
 528 static int receive_data(int fd, int revents, void *cb_data)
 529 {
 530         struct timeval tv;
 531         struct drv_context *drvc;
 532
 533         (void)fd;
 534         (void)revents;
 535         (void)cb_data;
 536
 537         drvc = di->priv;
 538
 539         tv.tv_sec = tv.tv_usec = 0;
 540         libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
 541
 542         return TRUE;
 543 }
 544
 545 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 546 {
 547         struct dev_context *devc;
 548         struct drv_context *drvc;
 549         struct sr_usb_dev_inst *usb;
 550         struct sr_trigger *trigger;
 551         struct libusb_transfer *transfer;
 552         unsigned int i, timeout, num_transfers;
 553         int ret;
 554         unsigned char *buf;
 555         size_t size;
 556
 557         if (sdi->status != SR_ST_ACTIVE)
 558                 return SR_ERR_DEV_CLOSED;
 559
 560         drvc = di->priv;
 561         devc = sdi->priv;
 562         usb = sdi->conn;
 563
 564         devc->cb_data = cb_data;
 565         devc->sent_samples = 0;
 566         devc->acq_aborted = FALSE;
 567         devc->empty_transfer_count = 0;
 568
 569         if ((trigger = sr_session_trigger_get(sdi->session))) {
 570                 devc->stl = soft_trigger_logic_new(sdi, trigger, 0);
 571                 devc->trigger_fired = FALSE;
 572         } else
 573                 devc->trigger_fired = TRUE;
 574
 575         timeout = fx2lafw_get_timeout(devc);
 576         num_transfers = fx2lafw_get_number_of_transfers(devc);
 577         size = fx2lafw_get_buffer_size(devc);
 578         devc->submitted_transfers = 0;
 579
 580         devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
 581         if (!devc->transfers) {
 582                 sr_err("USB transfers malloc failed.");
 583                 return SR_ERR_MALLOC;
 584         }
 585
 586         devc->num_transfers = num_transfers;
 587         for (i = 0; i < num_transfers; i++) {
 588                 if (!(buf = g_try_malloc(size))) {
 589                         sr_err("USB transfer buffer malloc failed.");
 590                         return SR_ERR_MALLOC;
 591                 }
 592                 transfer = libusb_alloc_transfer(0);
 593                 libusb_fill_bulk_transfer(transfer, usb->devhdl,
 594                                 2 | LIBUSB_ENDPOINT_IN, buf, size,
 595                                 fx2lafw_receive_transfer, (void *)sdi, timeout);
 596                 if ((ret = libusb_submit_transfer(transfer)) != 0) {
 597                         sr_err("Failed to submit transfer: %s.",
 598                                libusb_error_name(ret));
 599                         libusb_free_transfer(transfer);
 600                         g_free(buf);
 601                         fx2lafw_abort_acquisition(devc);
 602                         return SR_ERR;
 603                 }
 604                 devc->transfers[i] = transfer;
 605                 devc->submitted_transfers++;
 606         }
 607
 608         devc->ctx = drvc->sr_ctx;
 609
 610         usb_source_add(sdi->session, devc->ctx, timeout, receive_data, NULL);
 611
 612         /* Send header packet to the session bus. */
 613         std_session_send_df_header(cb_data, LOG_PREFIX);
 614
 615         if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
 616                 fx2lafw_abort_acquisition(devc);
 617                 return ret;
 618         }
 619
 620         return SR_OK;
 621 }
 622
 623 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 624 {
 625         (void)cb_data;
 626
 627         fx2lafw_abort_acquisition(sdi->priv);
 628
 629         return SR_OK;
 630 }
 631
 632 SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
 633         .name = "fx2lafw",
 634         .longname = "fx2lafw (generic driver for FX2 based LAs)",
 635         .api_version = 1,
 636         .init = init,
 637         .cleanup = cleanup,
 638         .scan = scan,
 639         .dev_list = dev_list,
 640         .dev_clear = NULL,
 641         .config_get = config_get,
 642         .config_set = config_set,
 643         .config_list = config_list,
 644         .dev_open = dev_open,
 645         .dev_close = dev_close,
 646         .dev_acquisition_start = dev_acquisition_start,
 647         .dev_acquisition_stop = dev_acquisition_stop,
 648         .priv = NULL,
 649 };