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 drvopts[] = {
  51         SR_CONF_LOGIC_ANALYZER,
  52 };
  53
  54 static const uint32_t scanopts[] = {
  55         SR_CONF_CONN,
  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 /* Names assigned to available edge slope choices. */
  71 static const char *const signal_edge_names[] = {
  72         [DS_EDGE_RISING] = "rising",
  73         [DS_EDGE_FALLING] = "falling",
  74 };
  75
  76 static const struct {
  77         gdouble low;
  78         gdouble high;
  79 } voltage_thresholds[] = {
  80         { 0.7, 1.4 },
  81         { 1.4, 3.6 },
  82 };
  83
  84 static const uint64_t samplerates[] = {
  85         SR_KHZ(10),
  86         SR_KHZ(20),
  87         SR_KHZ(50),
  88         SR_KHZ(100),
  89         SR_KHZ(200),
  90         SR_KHZ(500),
  91         SR_MHZ(1),
  92         SR_MHZ(2),
  93         SR_MHZ(5),
  94         SR_MHZ(10),
  95         SR_MHZ(20),
  96         SR_MHZ(25),
  97         SR_MHZ(50),
  98         SR_MHZ(100),
  99         SR_MHZ(200),
 100         SR_MHZ(400),
 101 };
 102
 103 static gboolean is_plausible(const struct libusb_device_descriptor *des)
 104 {
 105         int i;
 106
 107         for (i = 0; supported_device[i].vid; i++) {
 108                 if (des->idVendor != supported_device[i].vid)
 109                         continue;
 110                 if (des->idProduct == supported_device[i].pid)
 111                         return TRUE;
 112         }
 113
 114         return FALSE;
 115 }
 116
 117 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 118 {
 119         struct drv_context *drvc;
 120         struct dev_context *devc;
 121         struct sr_dev_inst *sdi;
 122         struct sr_usb_dev_inst *usb;
 123         struct sr_channel *ch;
 124         struct sr_channel_group *cg;
 125         struct sr_config *src;
 126         const struct dslogic_profile *prof;
 127         GSList *l, *devices, *conn_devices;
 128         gboolean has_firmware;
 129         struct libusb_device_descriptor des;
 130         libusb_device **devlist;
 131         struct libusb_device_handle *hdl;
 132         int ret, i, j;
 133         const char *conn;
 134         char manufacturer[64], product[64], serial_num[64], connection_id[64];
 135         char channel_name[16];
 136
 137         drvc = di->context;
 138
 139         conn = NULL;
 140         for (l = options; l; l = l->next) {
 141                 src = l->data;
 142                 switch (src->key) {
 143                 case SR_CONF_CONN:
 144                         conn = g_variant_get_string(src->data, NULL);
 145                         break;
 146                 }
 147         }
 148         if (conn)
 149                 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
 150         else
 151                 conn_devices = NULL;
 152
 153         /* Find all DSLogic compatible devices and upload firmware to them. */
 154         devices = NULL;
 155         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 156         for (i = 0; devlist[i]; i++) {
 157                 if (conn) {
 158                         usb = NULL;
 159                         for (l = conn_devices; l; l = l->next) {
 160                                 usb = l->data;
 161                                 if (usb->bus == libusb_get_bus_number(devlist[i])
 162                                         && usb->address == libusb_get_device_address(devlist[i]))
 163                                         break;
 164                         }
 165                         if (!l)
 166                                 /* This device matched none of the ones that
 167                                  * matched the conn specification. */
 168                                 continue;
 169                 }
 170
 171                 libusb_get_device_descriptor(devlist[i], &des);
 172
 173                 if (!is_plausible(&des))
 174                         continue;
 175
 176                 if ((ret = libusb_open(devlist[i], &hdl)) < 0) {
 177                         sr_warn("Failed to open potential device with "
 178                                 "VID:PID %04x:%04x: %s.", des.idVendor,
 179                                 des.idProduct, libusb_error_name(ret));
 180                         continue;
 181                 }
 182
 183                 if (des.iManufacturer == 0) {
 184                         manufacturer[0] = '\0';
 185                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 186                                 des.iManufacturer, (unsigned char *) manufacturer,
 187                                 sizeof(manufacturer))) < 0) {
 188                         sr_warn("Failed to get manufacturer string descriptor: %s.",
 189                                 libusb_error_name(ret));
 190                         continue;
 191                 }
 192
 193                 if (des.iProduct == 0) {
 194                         product[0] = '\0';
 195                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 196                                 des.iProduct, (unsigned char *) product,
 197                                 sizeof(product))) < 0) {
 198                         sr_warn("Failed to get product string descriptor: %s.",
 199                                 libusb_error_name(ret));
 200                         continue;
 201                 }
 202
 203                 if (des.iSerialNumber == 0) {
 204                         serial_num[0] = '\0';
 205                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 206                                 des.iSerialNumber, (unsigned char *) serial_num,
 207                                 sizeof(serial_num))) < 0) {
 208                         sr_warn("Failed to get serial number string descriptor: %s.",
 209                                 libusb_error_name(ret));
 210                         continue;
 211                 }
 212
 213                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 214
 215                 libusb_close(hdl);
 216
 217                 prof = NULL;
 218                 for (j = 0; supported_device[j].vid; j++) {
 219                         if (des.idVendor == supported_device[j].vid &&
 220                                         des.idProduct == supported_device[j].pid) {
 221                                 prof = &supported_device[j];
 222                                 break;
 223                         }
 224                 }
 225
 226                 /* Skip if the device was not found. */
 227                 if (!prof)
 228                         continue;
 229
 230                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 231                 sdi->status = SR_ST_INITIALIZING;
 232                 sdi->vendor = g_strdup(prof->vendor);
 233                 sdi->model = g_strdup(prof->model);
 234                 sdi->version = g_strdup(prof->model_version);
 235                 sdi->serial_num = g_strdup(serial_num);
 236                 sdi->connection_id = g_strdup(connection_id);
 237
 238                 /* Logic channels, all in one channel group. */
 239                 cg = g_malloc0(sizeof(struct sr_channel_group));
 240                 cg->name = g_strdup("Logic");
 241                 for (j = 0; j < 16; j++) {
 242                         sprintf(channel_name, "%d", j);
 243                         ch = sr_channel_new(sdi, j, SR_CHANNEL_LOGIC,
 244                                                 TRUE, channel_name);
 245                         cg->channels = g_slist_append(cg->channels, ch);
 246                 }
 247                 sdi->channel_groups = g_slist_append(NULL, cg);
 248
 249                 devc = dslogic_dev_new();
 250                 devc->profile = prof;
 251                 sdi->priv = devc;
 252                 devices = g_slist_append(devices, sdi);
 253
 254                 devc->samplerates = samplerates;
 255                 devc->num_samplerates = ARRAY_SIZE(samplerates);
 256                 has_firmware = usb_match_manuf_prod(devlist[i], "DreamSourceLab", "USB-based Instrument");
 257
 258                 if (has_firmware) {
 259                         /* Already has the firmware, so fix the new address. */
 260                         sr_dbg("Found a DSLogic device.");
 261                         sdi->status = SR_ST_INACTIVE;
 262                         sdi->inst_type = SR_INST_USB;
 263                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 264                                         libusb_get_device_address(devlist[i]), NULL);
 265                 } else {
 266                         if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
 267                                         USB_CONFIGURATION, prof->firmware) == SR_OK)
 268                                 /* Store when this device's FW was updated. */
 269                                 devc->fw_updated = g_get_monotonic_time();
 270                         else
 271                                 sr_err("Firmware upload failed for "
 272                                        "device %d.%d (logical).",
 273                                        libusb_get_bus_number(devlist[i]),
 274                                        libusb_get_device_address(devlist[i]));
 275                         sdi->inst_type = SR_INST_USB;
 276                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 277                                         0xff, NULL);
 278                 }
 279         }
 280         libusb_free_device_list(devlist, 1);
 281         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 282
 283         return std_scan_complete(di, devices);
 284 }
 285
 286 static void clear_dev_context(void *priv)
 287 {
 288         struct dev_context *devc;
 289
 290         devc = priv;
 291         g_free(devc);
 292 }
 293
 294 static int dev_clear(const struct sr_dev_driver *di)
 295 {
 296         return std_dev_clear(di, clear_dev_context);
 297 }
 298
 299 static int dev_open(struct sr_dev_inst *sdi)
 300 {
 301         struct sr_dev_driver *di = sdi->driver;
 302         struct sr_usb_dev_inst *usb;
 303         struct dev_context *devc;
 304         int ret;
 305         int64_t timediff_us, timediff_ms;
 306
 307         devc = sdi->priv;
 308         usb = sdi->conn;
 309
 310         /*
 311          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 312          * milliseconds for the FX2 to renumerate.
 313          */
 314         ret = SR_ERR;
 315         if (devc->fw_updated > 0) {
 316                 sr_info("Waiting for device to reset.");
 317                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 318                 g_usleep(300 * 1000);
 319                 timediff_ms = 0;
 320                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 321                         if ((ret = dslogic_dev_open(sdi, di)) == SR_OK)
 322                                 break;
 323                         g_usleep(100 * 1000);
 324
 325                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 326                         timediff_ms = timediff_us / 1000;
 327                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 328                 }
 329                 if (ret != SR_OK) {
 330                         sr_err("Device failed to renumerate.");
 331                         return SR_ERR;
 332                 }
 333                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 334         } else {
 335                 sr_info("Firmware upload was not needed.");
 336                 ret = dslogic_dev_open(sdi, di);
 337         }
 338
 339         if (ret != SR_OK) {
 340                 sr_err("Unable to open device.");
 341                 return SR_ERR;
 342         }
 343
 344         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 345         if (ret != 0) {
 346                 switch (ret) {
 347                 case LIBUSB_ERROR_BUSY:
 348                         sr_err("Unable to claim USB interface. Another "
 349                                "program or driver has already claimed it.");
 350                         break;
 351                 case LIBUSB_ERROR_NO_DEVICE:
 352                         sr_err("Device has been disconnected.");
 353                         break;
 354                 default:
 355                         sr_err("Unable to claim interface: %s.",
 356                                libusb_error_name(ret));
 357                         break;
 358                 }
 359
 360                 return SR_ERR;
 361         }
 362
 363
 364         if ((ret = dslogic_fpga_firmware_upload(sdi)) != SR_OK)
 365                 return ret;
 366
 367         if (devc->cur_samplerate == 0) {
 368                 /* Samplerate hasn't been set; default to the slowest one. */
 369                 devc->cur_samplerate = devc->samplerates[0];
 370         }
 371
 372         if (devc->cur_threshold == 0.0)
 373                 devc->cur_threshold = 1.5;
 374
 375         return SR_OK;
 376 }
 377
 378 static int dev_close(struct sr_dev_inst *sdi)
 379 {
 380         struct sr_usb_dev_inst *usb;
 381
 382         usb = sdi->conn;
 383
 384         if (!usb->devhdl)
 385                 return SR_ERR_BUG;
 386
 387         sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
 388                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 389         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 390         libusb_close(usb->devhdl);
 391         usb->devhdl = NULL;
 392
 393         return SR_OK;
 394 }
 395
 396 static int config_get(uint32_t key, GVariant **data,
 397         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 398 {
 399         struct dev_context *devc;
 400         struct sr_usb_dev_inst *usb;
 401         GVariant *range[2];
 402         unsigned int i, voltage_range;
 403         char str[128];
 404
 405         (void)cg;
 406
 407         if (!sdi)
 408                 return SR_ERR_ARG;
 409
 410         devc = sdi->priv;
 411
 412         switch (key) {
 413         case SR_CONF_CONN:
 414                 if (!sdi->conn)
 415                         return SR_ERR_ARG;
 416                 usb = sdi->conn;
 417                 if (usb->address == 255)
 418                         /* Device still needs to re-enumerate after firmware
 419                          * upload, so we don't know its (future) address. */
 420                         return SR_ERR;
 421                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 422                 *data = g_variant_new_string(str);
 423                 break;
 424         case SR_CONF_VOLTAGE_THRESHOLD:
 425                 if (!strcmp(devc->profile->model, "DSLogic")) {
 426                         voltage_range = 0;
 427
 428                         for (i = 0; i < ARRAY_SIZE(voltage_thresholds); i++)
 429                                 if (voltage_thresholds[i].low == devc->cur_threshold) {
 430                                         voltage_range = i;
 431                                         break;
 432                                 }
 433
 434                         range[0] = g_variant_new_double(
 435                                 voltage_thresholds[voltage_range].low);
 436                         range[1] = g_variant_new_double(
 437                                 voltage_thresholds[voltage_range].high);
 438                 } else {
 439                         range[0] = g_variant_new_double(devc->cur_threshold);
 440                         range[1] = g_variant_new_double(devc->cur_threshold);
 441                 }
 442                 *data = g_variant_new_tuple(range, 2);
 443                 break;
 444         case SR_CONF_LIMIT_SAMPLES:
 445                 *data = g_variant_new_uint64(devc->limit_samples);
 446                 break;
 447         case SR_CONF_SAMPLERATE:
 448                 *data = g_variant_new_uint64(devc->cur_samplerate);
 449                 break;
 450         case SR_CONF_CAPTURE_RATIO:
 451                 *data = g_variant_new_uint64(devc->capture_ratio);
 452                 break;
 453         case SR_CONF_EXTERNAL_CLOCK:
 454                 *data = g_variant_new_boolean(devc->external_clock);
 455                 break;
 456         case SR_CONF_CONTINUOUS:
 457                 *data = g_variant_new_boolean(devc->continuous_mode);
 458                 break;
 459         case SR_CONF_CLOCK_EDGE:
 460                 i = devc->clock_edge;
 461                 if (i >= ARRAY_SIZE(signal_edge_names))
 462                         return SR_ERR_BUG;
 463                 *data = g_variant_new_string(signal_edge_names[0]);
 464                 break;
 465         default:
 466                 return SR_ERR_NA;
 467         }
 468
 469         return SR_OK;
 470 }
 471
 472 /*
 473  * Helper for mapping a string-typed configuration value to an index
 474  * within a table of possible values.
 475  */
 476 static int lookup_index(GVariant *value, const char *const *table, int len)
 477 {
 478         const char *entry;
 479         int i;
 480
 481         entry = g_variant_get_string(value, NULL);
 482         if (!entry)
 483                 return -1;
 484
 485         /* Linear search is fine for very small tables. */
 486         for (i = 0; i < len; i++) {
 487                 if (strcmp(entry, table[i]) == 0)
 488                         return i;
 489         }
 490
 491         return -1;
 492 }
 493
 494 static int config_set(uint32_t key, GVariant *data,
 495         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 496 {
 497         struct dev_context *devc;
 498         uint64_t arg;
 499         int i, ret;
 500         gdouble low, high;
 501
 502         (void)cg;
 503
 504         if (!sdi)
 505                 return SR_ERR_ARG;
 506
 507         devc = sdi->priv;
 508
 509         ret = SR_OK;
 510
 511         switch (key) {
 512         case SR_CONF_SAMPLERATE:
 513                 arg = g_variant_get_uint64(data);
 514                 for (i = 0; i < devc->num_samplerates; i++) {
 515                         if (devc->samplerates[i] == arg) {
 516                                 devc->cur_samplerate = arg;
 517                                 break;
 518                         }
 519                 }
 520                 if (i == devc->num_samplerates)
 521                         ret = SR_ERR_ARG;
 522                 break;
 523         case SR_CONF_LIMIT_SAMPLES:
 524                 devc->limit_samples = g_variant_get_uint64(data);
 525                 break;
 526         case SR_CONF_CAPTURE_RATIO:
 527                 devc->capture_ratio = g_variant_get_uint64(data);
 528                 ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK;
 529                 break;
 530         case SR_CONF_VOLTAGE_THRESHOLD:
 531                 g_variant_get(data, "(dd)", &low, &high);
 532                 if (!strcmp(devc->profile->model, "DSLogic")) {
 533                         for (i = 0; (unsigned int)i < ARRAY_SIZE(voltage_thresholds); i++) {
 534                                 if (fabs(voltage_thresholds[i].low - low) < 0.1 &&
 535                                     fabs(voltage_thresholds[i].high - high) < 0.1) {
 536                                         devc->cur_threshold =
 537                                                 voltage_thresholds[i].low;
 538                                         break;
 539                                 }
 540                         }
 541                         ret = dslogic_fpga_firmware_upload(sdi);
 542                 } else {
 543                         ret = dslogic_set_voltage_threshold(sdi, (low + high) / 2.0);
 544                 }
 545                 break;
 546         case SR_CONF_EXTERNAL_CLOCK:
 547                 devc->external_clock = g_variant_get_boolean(data);
 548                 break;
 549         case SR_CONF_CONTINUOUS:
 550                 devc->continuous_mode = g_variant_get_boolean(data);
 551                 break;
 552         case SR_CONF_CLOCK_EDGE:
 553                 i = lookup_index(data, signal_edge_names,
 554                                    ARRAY_SIZE(signal_edge_names));
 555                 if (i < 0)
 556                         return SR_ERR_ARG;
 557                 devc->clock_edge = i;
 558                 break;
 559         default:
 560                 ret = SR_ERR_NA;
 561         }
 562
 563         return ret;
 564 }
 565
 566 static int config_list(uint32_t key, GVariant **data,
 567         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 568 {
 569         struct dev_context *devc = NULL;
 570         GVariant *gvar, *range[2];
 571         GVariantBuilder gvb;
 572         unsigned int i;
 573         double v;
 574
 575         (void)cg;
 576
 577         switch (key) {
 578         case SR_CONF_SCAN_OPTIONS:
 579                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 580                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 581                 break;
 582         case SR_CONF_DEVICE_OPTIONS:
 583                 if (!sdi) {
 584                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 585                                 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 586                 } else {
 587                         devc = sdi->priv;
 588                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 589                                                           devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 590                 }
 591                 break;
 592         case SR_CONF_VOLTAGE_THRESHOLD:
 593                 if (sdi->priv)
 594                         devc = sdi->priv;
 595                 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 596                 if (devc && !strcmp(devc->profile->model, "DSLogic")) {
 597                         for (i = 0; i < ARRAY_SIZE(voltage_thresholds); i++) {
 598                                 range[0] = g_variant_new_double(voltage_thresholds[i].low);
 599                                 range[1] = g_variant_new_double(voltage_thresholds[i].high);
 600                                 gvar = g_variant_new_tuple(range, 2);
 601                                 g_variant_builder_add_value(&gvb, gvar);
 602                         }
 603                 } else {
 604                         for (v = 0.0; v <= 5.0; v += 0.1) {
 605                                 range[0] = g_variant_new_double(v);
 606                                 range[1] = g_variant_new_double(v);
 607                                 gvar = g_variant_new_tuple(range, 2);
 608                                 g_variant_builder_add_value(&gvb, gvar);
 609                         }
 610                 }
 611                 *data = g_variant_builder_end(&gvb);
 612                 break;
 613         case SR_CONF_SAMPLERATE:
 614                 devc = sdi->priv;
 615                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 616                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
 617                                 devc->num_samplerates, sizeof(uint64_t));
 618                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 619                 *data = g_variant_builder_end(&gvb);
 620                 break;
 621         case SR_CONF_CLOCK_EDGE:
 622                 *data = g_variant_new_strv(signal_edge_names,
 623                         ARRAY_SIZE(signal_edge_names));
 624                 break;
 625         default:
 626                 return SR_ERR_NA;
 627         }
 628
 629         return SR_OK;
 630 }
 631
 632 static struct sr_dev_driver dreamsourcelab_dslogic_driver_info = {
 633         .name = "dreamsourcelab-dslogic",
 634         .longname = "DreamSourceLab DSLogic",
 635         .api_version = 1,
 636         .init = std_init,
 637         .cleanup = std_cleanup,
 638         .scan = scan,
 639         .dev_list = std_dev_list,
 640         .dev_clear = dev_clear,
 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 = dslogic_acquisition_start,
 647         .dev_acquisition_stop = dslogic_acquisition_stop,
 648         .context = NULL,
 649 };
 650 SR_REGISTER_DEV_DRIVER(dreamsourcelab_dslogic_driver_info);