src/hardware/yokogawa-dlm/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2014 abraxa (Soeren Apel) <soeren@apelpie.net>
   5  * Based on the Hameg HMO driver by poljar (Damir Jelić) <poljarinho@gmail.com>
   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 <stdlib.h>
  23 #include "scpi.h"
  24 #include "protocol.h"
  25
  26 static struct sr_dev_driver yokogawa_dlm_driver_info;
  27
  28 static const char *MANUFACTURER_ID = "YOKOGAWA";
  29 static const char *MANUFACTURER_NAME = "Yokogawa";
  30
  31 static const uint32_t dlm_scanopts[] = {
  32         SR_CONF_CONN,
  33 };
  34
  35 static const uint32_t dlm_drvopts[] = {
  36         SR_CONF_LOGIC_ANALYZER,
  37         SR_CONF_OSCILLOSCOPE,
  38 };
  39
  40 static const uint32_t dlm_devopts[] = {
  41         SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET,
  42         SR_CONF_SAMPLERATE | SR_CONF_GET,
  43         SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  44         SR_CONF_NUM_HDIV | SR_CONF_GET,
  45         SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
  46         SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  47         SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  48 };
  49
  50 static const uint32_t dlm_analog_devopts[] = {
  51         SR_CONF_NUM_VDIV | SR_CONF_GET,
  52         SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  53         SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  54 };
  55
  56 static const uint32_t dlm_digital_devopts[] = {
  57 };
  58
  59 enum {
  60         CG_INVALID = -1,
  61         CG_NONE,
  62         CG_ANALOG,
  63         CG_DIGITAL,
  64 };
  65
  66 static struct sr_dev_inst *probe_usbtmc_device(struct sr_scpi_dev_inst *scpi)
  67 {
  68         struct sr_dev_inst *sdi;
  69         struct dev_context *devc;
  70         struct sr_scpi_hw_info *hw_info;
  71         char *model_name;
  72         int model_index;
  73
  74         sdi = NULL;
  75         devc = NULL;
  76         hw_info = NULL;
  77
  78         if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
  79                 sr_info("Couldn't get IDN response.");
  80                 goto fail;
  81         }
  82
  83         if (strcmp(hw_info->manufacturer, MANUFACTURER_ID) != 0)
  84                 goto fail;
  85
  86         if (dlm_model_get(hw_info->model, &model_name, &model_index) != SR_OK)
  87                 goto fail;
  88
  89         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  90         sdi->vendor = g_strdup(MANUFACTURER_NAME);
  91         sdi->model = g_strdup(model_name);
  92         sdi->version = g_strdup(hw_info->firmware_version);
  93
  94         sdi->serial_num = g_strdup(hw_info->serial_number);
  95
  96         sr_scpi_hw_info_free(hw_info);
  97         hw_info = NULL;
  98
  99         devc = g_malloc0(sizeof(struct dev_context));
 100
 101         sdi->driver = &yokogawa_dlm_driver_info;
 102         sdi->priv = devc;
 103         sdi->inst_type = SR_INST_SCPI;
 104         sdi->conn = scpi;
 105
 106         if (dlm_device_init(sdi, model_index) != SR_OK)
 107                 goto fail;
 108
 109         return sdi;
 110
 111 fail:
 112         sr_scpi_hw_info_free(hw_info);
 113         sr_dev_inst_free(sdi);
 114         g_free(devc);
 115
 116         return NULL;
 117 }
 118
 119 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 120 {
 121         return sr_scpi_scan(di->context, options, probe_usbtmc_device);
 122 }
 123
 124 static void clear_helper(struct dev_context *devc)
 125 {
 126         dlm_scope_state_destroy(devc->model_state);
 127         g_free(devc->analog_groups);
 128         g_free(devc->digital_groups);
 129 }
 130
 131 static int dev_clear(const struct sr_dev_driver *di)
 132 {
 133         return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
 134 }
 135
 136 static int dev_open(struct sr_dev_inst *sdi)
 137 {
 138         if (sr_scpi_open(sdi->conn) != SR_OK)
 139                 return SR_ERR;
 140
 141         if (dlm_scope_state_query(sdi) != SR_OK)
 142                 return SR_ERR;
 143
 144         return SR_OK;
 145 }
 146
 147 static int dev_close(struct sr_dev_inst *sdi)
 148 {
 149         return sr_scpi_close(sdi->conn);
 150 }
 151
 152 /**
 153  * Check which category a given channel group belongs to.
 154  *
 155  * @param devc Our internal device context.
 156  * @param cg The channel group to check.
 157  *
 158  * @retval CG_NONE cg is NULL
 159  * @retval CG_ANALOG cg is an analog group
 160  * @retval CG_DIGITAL cg is a digital group
 161  * @retval CG_INVALID cg is something else
 162  */
 163 static int check_channel_group(struct dev_context *devc,
 164                         const struct sr_channel_group *cg)
 165 {
 166         unsigned int i;
 167         const struct scope_config *model;
 168
 169         model = devc->model_config;
 170
 171         if (!cg)
 172                 return CG_NONE;
 173
 174         for (i = 0; i < model->analog_channels; i++)
 175                 if (cg == devc->analog_groups[i])
 176                         return CG_ANALOG;
 177
 178         for (i = 0; i < model->pods; i++)
 179                 if (cg == devc->digital_groups[i])
 180                         return CG_DIGITAL;
 181
 182         sr_err("Invalid channel group specified.");
 183         return CG_INVALID;
 184 }
 185
 186 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 187                 const struct sr_channel_group *cg)
 188 {
 189         int ret, cg_type;
 190         unsigned int i;
 191         struct dev_context *devc;
 192         const struct scope_config *model;
 193         struct scope_state *state;
 194
 195         if (!sdi)
 196                 return SR_ERR_ARG;
 197
 198         devc = sdi->priv;
 199
 200         if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 201                 return SR_ERR;
 202
 203         model = devc->model_config;
 204         state = devc->model_state;
 205
 206         switch (key) {
 207         case SR_CONF_NUM_HDIV:
 208                 *data = g_variant_new_int32(model->num_xdivs);
 209                 ret = SR_OK;
 210                 break;
 211         case SR_CONF_TIMEBASE:
 212                 *data = g_variant_new("(tt)",
 213                                 dlm_timebases[state->timebase][0],
 214                                 dlm_timebases[state->timebase][1]);
 215                 ret = SR_OK;
 216                 break;
 217         case SR_CONF_NUM_VDIV:
 218                 if (cg_type == CG_NONE) {
 219                         sr_err("No channel group specified.");
 220                         return SR_ERR_CHANNEL_GROUP;
 221                 } else if (cg_type == CG_ANALOG) {
 222                                 *data = g_variant_new_int32(model->num_ydivs);
 223                                 ret = SR_OK;
 224                                 break;
 225                 } else {
 226                         ret = SR_ERR_NA;
 227                 }
 228                 break;
 229         case SR_CONF_VDIV:
 230                 ret = SR_ERR_NA;
 231                 if (cg_type == CG_NONE) {
 232                         sr_err("No channel group specified.");
 233                         return SR_ERR_CHANNEL_GROUP;
 234                 } else if (cg_type != CG_ANALOG)
 235                         break;
 236
 237                 for (i = 0; i < model->analog_channels; i++) {
 238                         if (cg != devc->analog_groups[i])
 239                                 continue;
 240                         *data = g_variant_new("(tt)",
 241                                         dlm_vdivs[state->analog_states[i].vdiv][0],
 242                                         dlm_vdivs[state->analog_states[i].vdiv][1]);
 243                         ret = SR_OK;
 244                         break;
 245                 }
 246                 break;
 247         case SR_CONF_TRIGGER_SOURCE:
 248                 *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]);
 249                 ret = SR_OK;
 250                 break;
 251         case SR_CONF_TRIGGER_SLOPE:
 252                 *data = g_variant_new_string(dlm_trigger_slopes[state->trigger_slope]);
 253                 ret = SR_OK;
 254                 break;
 255         case SR_CONF_HORIZ_TRIGGERPOS:
 256                 *data = g_variant_new_double(state->horiz_triggerpos);
 257                 ret = SR_OK;
 258                 break;
 259         case SR_CONF_COUPLING:
 260                 ret = SR_ERR_NA;
 261                 if (cg_type == CG_NONE) {
 262                         sr_err("No channel group specified.");
 263                         return SR_ERR_CHANNEL_GROUP;
 264                 } else if (cg_type != CG_ANALOG)
 265                         break;
 266
 267                 for (i = 0; i < model->analog_channels; i++) {
 268                         if (cg != devc->analog_groups[i])
 269                                 continue;
 270                         *data = g_variant_new_string((*model->coupling_options)[state->analog_states[i].coupling]);
 271                         ret = SR_OK;
 272                         break;
 273                 }
 274                 break;
 275         case SR_CONF_SAMPLERATE:
 276                 *data = g_variant_new_uint64(state->sample_rate);
 277                 ret = SR_OK;
 278                 break;
 279         default:
 280                 ret = SR_ERR_NA;
 281         }
 282
 283         return ret;
 284 }
 285
 286 static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n)
 287 {
 288         unsigned int i;
 289         GVariant *rational[2];
 290         GVariantBuilder gvb;
 291
 292         g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 293
 294         for (i = 0; i < n; i++) {
 295                 rational[0] = g_variant_new_uint64((*array)[i][0]);
 296                 rational[1] = g_variant_new_uint64((*array)[i][1]);
 297
 298                 /* FIXME: Valgrind reports a memory leak here. */
 299                 g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
 300         }
 301
 302         return g_variant_builder_end(&gvb);
 303 }
 304
 305 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 306                 const struct sr_channel_group *cg)
 307 {
 308         int ret, cg_type;
 309         unsigned int i, j;
 310         char float_str[30];
 311         struct dev_context *devc;
 312         const struct scope_config *model;
 313         struct scope_state *state;
 314         const char *tmp;
 315         uint64_t p, q;
 316         double tmp_d;
 317         gboolean update_sample_rate;
 318
 319         if (!sdi || !(devc = sdi->priv))
 320                 return SR_ERR_ARG;
 321
 322         if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 323                 return SR_ERR;
 324
 325         model = devc->model_config;
 326         state = devc->model_state;
 327         update_sample_rate = FALSE;
 328
 329         ret = SR_ERR_NA;
 330
 331         switch (key) {
 332         case SR_CONF_LIMIT_FRAMES:
 333                 devc->frame_limit = g_variant_get_uint64(data);
 334                 ret = SR_OK;
 335                 break;
 336         case SR_CONF_TRIGGER_SOURCE:
 337                 tmp = g_variant_get_string(data, NULL);
 338                 for (i = 0; (*model->trigger_sources)[i]; i++) {
 339                         if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
 340                                 continue;
 341                         state->trigger_source = i;
 342                         /* TODO: A and B trigger support possible? */
 343                         ret = dlm_trigger_source_set(sdi->conn, (*model->trigger_sources)[i]);
 344                         break;
 345                 }
 346                 break;
 347         case SR_CONF_VDIV:
 348                 if (cg_type == CG_NONE) {
 349                         sr_err("No channel group specified.");
 350                         return SR_ERR_CHANNEL_GROUP;
 351                 }
 352
 353                 g_variant_get(data, "(tt)", &p, &q);
 354
 355                 for (i = 0; i < ARRAY_SIZE(dlm_vdivs); i++) {
 356                         if (p != dlm_vdivs[i][0] ||
 357                                         q != dlm_vdivs[i][1])
 358                                 continue;
 359                         for (j = 1; j <= model->analog_channels; j++) {
 360                                 if (cg != devc->analog_groups[j - 1])
 361                                         continue;
 362                                 state->analog_states[j - 1].vdiv = i;
 363                                 g_ascii_formatd(float_str, sizeof(float_str),
 364                                                 "%E", (float) p / q);
 365                                 if (dlm_analog_chan_vdiv_set(sdi->conn, j, float_str) != SR_OK ||
 366                                                 sr_scpi_get_opc(sdi->conn) != SR_OK)
 367                                         return SR_ERR;
 368
 369                                 break;
 370                         }
 371
 372                         ret = SR_OK;
 373                         break;
 374                 }
 375                 break;
 376         case SR_CONF_TIMEBASE:
 377                 g_variant_get(data, "(tt)", &p, &q);
 378
 379                 for (i = 0; i < ARRAY_SIZE(dlm_timebases); i++) {
 380                         if (p != dlm_timebases[i][0] ||
 381                                         q != dlm_timebases[i][1])
 382                                 continue;
 383                         state->timebase = i;
 384                         g_ascii_formatd(float_str, sizeof(float_str),
 385                                         "%E", (float) p / q);
 386                         ret = dlm_timebase_set(sdi->conn, float_str);
 387                         update_sample_rate = TRUE;
 388                         break;
 389                 }
 390                 break;
 391         case SR_CONF_HORIZ_TRIGGERPOS:
 392                 tmp_d = g_variant_get_double(data);
 393
 394                 /* TODO: Check if the calculation makes sense for the DLM. */
 395                 if (tmp_d < 0.0 || tmp_d > 1.0)
 396                         return SR_ERR;
 397
 398                 state->horiz_triggerpos = tmp_d;
 399                 tmp_d = -(tmp_d - 0.5) *
 400                                 ((double) dlm_timebases[state->timebase][0] /
 401                                 dlm_timebases[state->timebase][1])
 402                                 * model->num_xdivs;
 403
 404                 g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
 405                 ret = dlm_horiz_trigger_pos_set(sdi->conn, float_str);
 406                 break;
 407         case SR_CONF_TRIGGER_SLOPE:
 408                 tmp = g_variant_get_string(data, NULL);
 409
 410                 if (!tmp || !(tmp[0] == 'f' || tmp[0] == 'r'))
 411                         return SR_ERR_ARG;
 412
 413                 /* Note: See dlm_trigger_slopes[] in protocol.c. */
 414                 state->trigger_slope = (tmp[0] == 'r') ?
 415                                 SLOPE_POSITIVE : SLOPE_NEGATIVE;
 416
 417                 ret = dlm_trigger_slope_set(sdi->conn, state->trigger_slope);
 418                 break;
 419         case SR_CONF_COUPLING:
 420                 if (cg_type == CG_NONE) {
 421                         sr_err("No channel group specified.");
 422                         return SR_ERR_CHANNEL_GROUP;
 423                 }
 424
 425                 tmp = g_variant_get_string(data, NULL);
 426
 427                 for (i = 0; (*model->coupling_options)[i]; i++) {
 428                         if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
 429                                 continue;
 430                         for (j = 1; j <= model->analog_channels; j++) {
 431                                 if (cg != devc->analog_groups[j - 1])
 432                                         continue;
 433                                 state->analog_states[j-1].coupling = i;
 434
 435                                 if (dlm_analog_chan_coupl_set(sdi->conn, j, tmp) != SR_OK ||
 436                                                 sr_scpi_get_opc(sdi->conn) != SR_OK)
 437                                         return SR_ERR;
 438                                 break;
 439                         }
 440
 441                         ret = SR_OK;
 442                         break;
 443                 }
 444                 break;
 445         default:
 446                 ret = SR_ERR_NA;
 447                 break;
 448         }
 449
 450         if (ret == SR_OK)
 451                 ret = sr_scpi_get_opc(sdi->conn);
 452
 453         if (ret == SR_OK && update_sample_rate)
 454                 ret = dlm_sample_rate_query(sdi);
 455
 456         return ret;
 457 }
 458
 459 static int config_channel_set(const struct sr_dev_inst *sdi,
 460                         struct sr_channel *ch, unsigned int changes)
 461 {
 462         /* Currently we only handle SR_CHANNEL_SET_ENABLED. */
 463         if (changes != SR_CHANNEL_SET_ENABLED)
 464                 return SR_ERR_NA;
 465
 466         return dlm_channel_state_set(sdi, ch->index, ch->enabled);
 467 }
 468
 469 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 470                 const struct sr_channel_group *cg)
 471 {
 472         int cg_type = CG_NONE;
 473         struct dev_context *devc;
 474         const struct scope_config *model;
 475
 476         devc = (sdi) ? sdi->priv : NULL;
 477         model = (devc) ? devc->model_config : NULL;
 478
 479         if (!cg) {
 480                 switch (key) {
 481                 case SR_CONF_SCAN_OPTIONS:
 482                 case SR_CONF_DEVICE_OPTIONS:
 483                         return STD_CONFIG_LIST(key, data, sdi, cg, dlm_scanopts, dlm_drvopts, dlm_devopts);
 484                 case SR_CONF_TIMEBASE:
 485                         *data = build_tuples(&dlm_timebases, ARRAY_SIZE(dlm_timebases));
 486                         return SR_OK;
 487                 case SR_CONF_TRIGGER_SOURCE:
 488                         if (!model)
 489                                 return SR_ERR_ARG;
 490                         *data = g_variant_new_strv(*model->trigger_sources,
 491                                         g_strv_length((char **)*model->trigger_sources));
 492                         return SR_OK;
 493                 case SR_CONF_TRIGGER_SLOPE:
 494                         *data = g_variant_new_strv(dlm_trigger_slopes,
 495                                         g_strv_length((char **)dlm_trigger_slopes));
 496                         return SR_OK;
 497                 case SR_CONF_NUM_HDIV:
 498                         *data = g_variant_new_uint32(model->num_xdivs);
 499                         return SR_OK;
 500                 default:
 501                         return SR_ERR_NA;
 502                 }
 503         }
 504
 505         if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 506                 return SR_ERR;
 507
 508         switch (key) {
 509         case SR_CONF_DEVICE_OPTIONS:
 510                 if (cg_type == CG_ANALOG) {
 511                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 512                                 dlm_analog_devopts, ARRAY_SIZE(dlm_analog_devopts), sizeof(uint32_t));
 513                 } else if (cg_type == CG_DIGITAL) {
 514                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 515                                 dlm_digital_devopts, ARRAY_SIZE(dlm_digital_devopts), sizeof(uint32_t));
 516                 } else {
 517                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 518                                 NULL, 0, sizeof(uint32_t));
 519                 }
 520                 break;
 521         case SR_CONF_COUPLING:
 522                 if (cg_type == CG_NONE)
 523                         return SR_ERR_CHANNEL_GROUP;
 524                 *data = g_variant_new_strv(*model->coupling_options,
 525                                 g_strv_length((char **)*model->coupling_options));
 526                 break;
 527         case SR_CONF_VDIV:
 528                 if (cg_type == CG_NONE)
 529                         return SR_ERR_CHANNEL_GROUP;
 530                 *data = build_tuples(&dlm_vdivs, ARRAY_SIZE(dlm_vdivs));
 531                 break;
 532         default:
 533                 return SR_ERR_NA;
 534         }
 535
 536         return SR_OK;
 537 }
 538
 539 static int dlm_check_channels(GSList *channels)
 540 {
 541         GSList *l;
 542         struct sr_channel *ch;
 543         gboolean enabled_pod1, enabled_chan4;
 544
 545         enabled_pod1 = enabled_chan4 = FALSE;
 546
 547         /* Note: On the DLM2000, CH4 and Logic are shared. */
 548         /* TODO Handle non-DLM2000 models. */
 549         for (l = channels; l; l = l->next) {
 550                 ch = l->data;
 551                 switch (ch->type) {
 552                 case SR_CHANNEL_ANALOG:
 553                         if (ch->index == 3)
 554                                 enabled_chan4 = TRUE;
 555                         break;
 556                 case SR_CHANNEL_LOGIC:
 557                         enabled_pod1 = TRUE;
 558                         break;
 559                 default:
 560                         return SR_ERR;
 561                 }
 562         }
 563
 564         if (enabled_pod1 && enabled_chan4)
 565                 return SR_ERR;
 566
 567         return SR_OK;
 568 }
 569
 570 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 571 {
 572         GSList *l;
 573         gboolean digital_added;
 574         struct sr_channel *ch;
 575         struct dev_context *devc;
 576         struct sr_scpi_dev_inst *scpi;
 577
 578         scpi = sdi->conn;
 579         devc = sdi->priv;
 580         digital_added = FALSE;
 581
 582         g_slist_free(devc->enabled_channels);
 583         devc->enabled_channels = NULL;
 584
 585         for (l = sdi->channels; l; l = l->next) {
 586                 ch = l->data;
 587                 if (!ch->enabled)
 588                         continue;
 589                 /* Only add a single digital channel. */
 590                 if (ch->type != SR_CHANNEL_LOGIC || !digital_added) {
 591                         devc->enabled_channels = g_slist_append(
 592                                 devc->enabled_channels, ch);
 593                         if (ch->type == SR_CHANNEL_LOGIC)
 594                                 digital_added = TRUE;
 595                 }
 596         }
 597
 598         if (!devc->enabled_channels)
 599                 return SR_ERR;
 600
 601         if (dlm_check_channels(devc->enabled_channels) != SR_OK) {
 602                 sr_err("Invalid channel configuration specified!");
 603                 return SR_ERR_NA;
 604         }
 605
 606         /* Request data for the first enabled channel. */
 607         devc->current_channel = devc->enabled_channels;
 608         dlm_channel_data_request(sdi);
 609
 610         sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 5,
 611                         dlm_data_receive, (void *)sdi);
 612
 613         return SR_OK;
 614 }
 615
 616 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 617 {
 618         struct dev_context *devc;
 619
 620         std_session_send_df_end(sdi);
 621
 622         devc = sdi->priv;
 623
 624         devc->num_frames = 0;
 625         g_slist_free(devc->enabled_channels);
 626         devc->enabled_channels = NULL;
 627
 628         sr_scpi_source_remove(sdi->session, sdi->conn);
 629
 630         return SR_OK;
 631 }
 632
 633 static struct sr_dev_driver yokogawa_dlm_driver_info = {
 634         .name = "yokogawa-dlm",
 635         .longname = "Yokogawa DL/DLM",
 636         .api_version = 1,
 637         .init = std_init,
 638         .cleanup = std_cleanup,
 639         .scan = scan,
 640         .dev_list = std_dev_list,
 641         .dev_clear = dev_clear,
 642         .config_get = config_get,
 643         .config_set = config_set,
 644         .config_channel_set = config_channel_set,
 645         .config_list = config_list,
 646         .dev_open = dev_open,
 647         .dev_close = dev_close,
 648         .dev_acquisition_start = dev_acquisition_start,
 649         .dev_acquisition_stop = dev_acquisition_stop,
 650         .context = NULL,
 651 };
 652 SR_REGISTER_DEV_DRIVER(yokogawa_dlm_driver_info);