src/hardware/openbench-logic-sniffer/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <config.h>
  21 #include "protocol.h"
  22
  23 #define SERIALCOMM "115200/8n1"
  24
  25 static const uint32_t drvopts[] = {
  26         SR_CONF_LOGIC_ANALYZER,
  27 };
  28
  29 static const uint32_t scanopts[] = {
  30         SR_CONF_CONN,
  31         SR_CONF_SERIALCOMM,
  32 };
  33
  34 static const uint32_t devopts[] = {
  35         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  36         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  37         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
  38         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
  39         SR_CONF_EXTERNAL_CLOCK | SR_CONF_SET,
  40         SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  41         SR_CONF_SWAP | SR_CONF_SET,
  42         SR_CONF_RLE | SR_CONF_GET | SR_CONF_SET,
  43 };
  44
  45 static const int32_t trigger_matches[] = {
  46         SR_TRIGGER_ZERO,
  47         SR_TRIGGER_ONE,
  48 };
  49
  50 #define STR_PATTERN_NONE     "None"
  51 #define STR_PATTERN_EXTERNAL "External"
  52 #define STR_PATTERN_INTERNAL "Internal"
  53
  54 /* Supported methods of test pattern outputs */
  55 enum {
  56         /**
  57          * Capture pins 31:16 (unbuffered wing) output a test pattern
  58          * that can captured on pins 0:15.
  59          */
  60         PATTERN_EXTERNAL,
  61
  62         /** Route test pattern internally to capture buffer. */
  63         PATTERN_INTERNAL,
  64 };
  65
  66 static const char *patterns[] = {
  67         STR_PATTERN_NONE,
  68         STR_PATTERN_EXTERNAL,
  69         STR_PATTERN_INTERNAL,
  70 };
  71
  72 /* Channels are numbered 0-31 (on the PCB silkscreen). */
  73 SR_PRIV const char *ols_channel_names[] = {
  74         "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
  75         "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23",
  76         "24", "25", "26", "27", "28", "29", "30", "31",
  77 };
  78
  79 /* Default supported samplerates, can be overridden by device metadata. */
  80 static const uint64_t samplerates[] = {
  81         SR_HZ(10),
  82         SR_MHZ(200),
  83         SR_HZ(1),
  84 };
  85
  86 #define RESPONSE_DELAY_US (10 * 1000)
  87
  88 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  89 {
  90         struct sr_config *src;
  91         struct sr_dev_inst *sdi;
  92         struct sr_serial_dev_inst *serial;
  93         GSList *l, *devices;
  94         int ret;
  95         unsigned int i;
  96         const char *conn, *serialcomm;
  97         char buf[8];
  98
  99         devices = NULL;
 100
 101         conn = serialcomm = NULL;
 102         for (l = options; l; l = l->next) {
 103                 src = l->data;
 104                 switch (src->key) {
 105                 case SR_CONF_CONN:
 106                         conn = g_variant_get_string(src->data, NULL);
 107                         break;
 108                 case SR_CONF_SERIALCOMM:
 109                         serialcomm = g_variant_get_string(src->data, NULL);
 110                         break;
 111                 }
 112         }
 113         if (!conn)
 114                 return NULL;
 115
 116         if (!serialcomm)
 117                 serialcomm = SERIALCOMM;
 118
 119         serial = sr_serial_dev_inst_new(conn, serialcomm);
 120
 121         /* The discovery procedure is like this: first send the Reset
 122          * command (0x00) 5 times, since the device could be anywhere
 123          * in a 5-byte command. Then send the ID command (0x02).
 124          * If the device responds with 4 bytes ("OLS1" or "SLA1"), we
 125          * have a match.
 126          */
 127         sr_info("Probing %s.", conn);
 128         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
 129                 return NULL;
 130
 131         ret = SR_OK;
 132         for (i = 0; i < 5; i++) {
 133                 if ((ret = send_shortcommand(serial, CMD_RESET)) != SR_OK) {
 134                         sr_err("Port %s is not writable.", conn);
 135                         break;
 136                 }
 137         }
 138         if (ret != SR_OK) {
 139                 serial_close(serial);
 140                 sr_err("Could not use port %s. Quitting.", conn);
 141                 return NULL;
 142         }
 143         send_shortcommand(serial, CMD_ID);
 144
 145         g_usleep(RESPONSE_DELAY_US);
 146
 147         if (sp_input_waiting(serial->data) == 0) {
 148                 sr_dbg("Didn't get any reply.");
 149                 return NULL;
 150         }
 151
 152         ret = serial_read_blocking(serial, buf, 4, serial_timeout(serial, 4));
 153         if (ret != 4) {
 154                 sr_err("Invalid reply (expected 4 bytes, got %d).", ret);
 155                 return NULL;
 156         }
 157
 158         if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4)) {
 159                 sr_err("Invalid reply (expected '1SLO' or '1ALS', got "
 160                        "'%c%c%c%c').", buf[0], buf[1], buf[2], buf[3]);
 161                 return NULL;
 162         }
 163
 164         /* Definitely using the OLS protocol, check if it supports
 165          * the metadata command.
 166          */
 167         send_shortcommand(serial, CMD_METADATA);
 168
 169         g_usleep(RESPONSE_DELAY_US);
 170
 171         if (sp_input_waiting(serial->data) != 0) {
 172                 /* Got metadata. */
 173                 sdi = get_metadata(serial);
 174         } else {
 175                 /* Not an OLS -- some other board that uses the sump protocol. */
 176                 sr_info("Device does not support metadata.");
 177                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 178                 sdi->status = SR_ST_INACTIVE;
 179                 sdi->vendor = g_strdup("Sump");
 180                 sdi->model = g_strdup("Logic Analyzer");
 181                 sdi->version = g_strdup("v1.0");
 182                 for (i = 0; i < ARRAY_SIZE(ols_channel_names); i++)
 183                         sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
 184                                         ols_channel_names[i]);
 185                 sdi->priv = ols_dev_new();
 186         }
 187         /* Configure samplerate and divider. */
 188         if (ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK)
 189                 sr_dbg("Failed to set default samplerate (%"PRIu64").",
 190                                 DEFAULT_SAMPLERATE);
 191         sdi->inst_type = SR_INST_SERIAL;
 192         sdi->conn = serial;
 193
 194         devices = g_slist_append(devices, sdi);
 195
 196         serial_close(serial);
 197
 198         return std_scan_complete(di, devices);
 199 }
 200
 201 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 202                 const struct sr_channel_group *cg)
 203 {
 204         struct dev_context *devc;
 205
 206         (void)cg;
 207
 208         if (!sdi)
 209                 return SR_ERR_ARG;
 210
 211         devc = sdi->priv;
 212         switch (key) {
 213         case SR_CONF_SAMPLERATE:
 214                 *data = g_variant_new_uint64(devc->cur_samplerate);
 215                 break;
 216         case SR_CONF_CAPTURE_RATIO:
 217                 *data = g_variant_new_uint64(devc->capture_ratio);
 218                 break;
 219         case SR_CONF_LIMIT_SAMPLES:
 220                 *data = g_variant_new_uint64(devc->limit_samples);
 221                 break;
 222         case SR_CONF_PATTERN_MODE:
 223                 if (devc->flag_reg & FLAG_EXTERNAL_TEST_MODE)
 224                         *data = g_variant_new_string(STR_PATTERN_EXTERNAL);
 225                 else if (devc->flag_reg & FLAG_INTERNAL_TEST_MODE)
 226                         *data = g_variant_new_string(STR_PATTERN_INTERNAL);
 227                 else
 228                         *data = g_variant_new_string(STR_PATTERN_NONE);
 229                 break;
 230         case SR_CONF_RLE:
 231                 *data = g_variant_new_boolean(devc->flag_reg & FLAG_RLE ? TRUE : FALSE);
 232                 break;
 233         default:
 234                 return SR_ERR_NA;
 235         }
 236
 237         return SR_OK;
 238 }
 239
 240 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 241                 const struct sr_channel_group *cg)
 242 {
 243         struct dev_context *devc;
 244         uint16_t flag;
 245         uint64_t tmp_u64;
 246         int ret;
 247         const char *stropt;
 248
 249         (void)cg;
 250
 251         if (sdi->status != SR_ST_ACTIVE)
 252                 return SR_ERR_DEV_CLOSED;
 253
 254         devc = sdi->priv;
 255
 256         switch (key) {
 257         case SR_CONF_SAMPLERATE:
 258                 tmp_u64 = g_variant_get_uint64(data);
 259                 if (tmp_u64 < samplerates[0] || tmp_u64 > samplerates[1])
 260                         return SR_ERR_SAMPLERATE;
 261                 ret = ols_set_samplerate(sdi, g_variant_get_uint64(data));
 262                 break;
 263         case SR_CONF_LIMIT_SAMPLES:
 264                 tmp_u64 = g_variant_get_uint64(data);
 265                 if (tmp_u64 < MIN_NUM_SAMPLES)
 266                         return SR_ERR;
 267                 devc->limit_samples = tmp_u64;
 268                 ret = SR_OK;
 269                 break;
 270         case SR_CONF_CAPTURE_RATIO:
 271                 devc->capture_ratio = g_variant_get_uint64(data);
 272                 if (devc->capture_ratio < 0 || devc->capture_ratio > 100)
 273                         ret = SR_ERR;
 274                 else
 275                         ret = SR_OK;
 276                 break;
 277         case SR_CONF_EXTERNAL_CLOCK:
 278                 if (g_variant_get_boolean(data)) {
 279                         sr_info("Enabling external clock.");
 280                         devc->flag_reg |= FLAG_CLOCK_EXTERNAL;
 281                 } else {
 282                         sr_info("Disabled external clock.");
 283                         devc->flag_reg &= ~FLAG_CLOCK_EXTERNAL;
 284                 }
 285                 ret = SR_OK;
 286                 break;
 287         case SR_CONF_PATTERN_MODE:
 288                 stropt = g_variant_get_string(data, NULL);
 289                 ret = SR_OK;
 290                 flag = 0xffff;
 291                 if (!strcmp(stropt, STR_PATTERN_NONE)) {
 292                         sr_info("Disabling test modes.");
 293                         flag = 0x0000;
 294                 }else if (!strcmp(stropt, STR_PATTERN_INTERNAL)) {
 295                         sr_info("Enabling internal test mode.");
 296                         flag = FLAG_INTERNAL_TEST_MODE;
 297                 } else if (!strcmp(stropt, STR_PATTERN_EXTERNAL)) {
 298                         sr_info("Enabling external test mode.");
 299                         flag = FLAG_EXTERNAL_TEST_MODE;
 300                 } else {
 301                         ret = SR_ERR;
 302                 }
 303                 if (flag != 0xffff) {
 304                         devc->flag_reg &= ~(FLAG_INTERNAL_TEST_MODE | FLAG_EXTERNAL_TEST_MODE);
 305                         devc->flag_reg |= flag;
 306                 }
 307                 break;
 308         case SR_CONF_SWAP:
 309                 if (g_variant_get_boolean(data)) {
 310                         sr_info("Enabling channel swapping.");
 311                         devc->flag_reg |= FLAG_SWAP_CHANNELS;
 312                 } else {
 313                         sr_info("Disabling channel swapping.");
 314                         devc->flag_reg &= ~FLAG_SWAP_CHANNELS;
 315                 }
 316                 ret = SR_OK;
 317                 break;
 318
 319         case SR_CONF_RLE:
 320                 if (g_variant_get_boolean(data)) {
 321                         sr_info("Enabling RLE.");
 322                         devc->flag_reg |= FLAG_RLE;
 323                 } else {
 324                         sr_info("Disabling RLE.");
 325                         devc->flag_reg &= ~FLAG_RLE;
 326                 }
 327                 ret = SR_OK;
 328                 break;
 329         default:
 330                 ret = SR_ERR_NA;
 331         }
 332
 333         return ret;
 334 }
 335
 336 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 337                 const struct sr_channel_group *cg)
 338 {
 339         struct dev_context *devc;
 340         GVariant *gvar, *grange[2];
 341         GVariantBuilder gvb;
 342         int num_ols_changrp, i;
 343
 344         (void)cg;
 345
 346         switch (key) {
 347         case SR_CONF_SCAN_OPTIONS:
 348                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 349                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 350                 break;
 351         case SR_CONF_DEVICE_OPTIONS:
 352                 if (!sdi)
 353                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 354                                         drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 355                 else
 356                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 357                                         devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 358                 break;
 359         case SR_CONF_SAMPLERATE:
 360                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 361                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
 362                                 ARRAY_SIZE(samplerates), sizeof(uint64_t));
 363                 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
 364                 *data = g_variant_builder_end(&gvb);
 365                 break;
 366         case SR_CONF_TRIGGER_MATCH:
 367                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 368                                 trigger_matches, ARRAY_SIZE(trigger_matches),
 369                                 sizeof(int32_t));
 370                 break;
 371         case SR_CONF_PATTERN_MODE:
 372                 *data = g_variant_new_strv(patterns, ARRAY_SIZE(patterns));
 373                 break;
 374         case SR_CONF_LIMIT_SAMPLES:
 375                 if (!sdi)
 376                         return SR_ERR_ARG;
 377                 devc = sdi->priv;
 378                 if (devc->flag_reg & FLAG_RLE)
 379                         return SR_ERR_NA;
 380                 if (devc->max_samples == 0)
 381                         /* Device didn't specify sample memory size in metadata. */
 382                         return SR_ERR_NA;
 383                 /*
 384                  * Channel groups are turned off if no channels in that group are
 385                  * enabled, making more room for samples for the enabled group.
 386                 */
 387                 ols_channel_mask(sdi);
 388                 num_ols_changrp = 0;
 389                 for (i = 0; i < 4; i++) {
 390                         if (devc->channel_mask & (0xff << (i * 8)))
 391                                 num_ols_changrp++;
 392                 }
 393                 grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES);
 394                 if (num_ols_changrp)
 395                         grange[1] = g_variant_new_uint64(devc->max_samples / num_ols_changrp);
 396                 else
 397                         grange[1] = g_variant_new_uint64(MIN_NUM_SAMPLES);
 398                 *data = g_variant_new_tuple(grange, 2);
 399                 break;
 400         default:
 401                 return SR_ERR_NA;
 402         }
 403
 404         return SR_OK;
 405 }
 406
 407 static int set_trigger(const struct sr_dev_inst *sdi, int stage)
 408 {
 409         struct dev_context *devc;
 410         struct sr_serial_dev_inst *serial;
 411         uint8_t cmd, arg[4];
 412
 413         devc = sdi->priv;
 414         serial = sdi->conn;
 415
 416         cmd = CMD_SET_TRIGGER_MASK + stage * 4;
 417         arg[0] = devc->trigger_mask[stage] & 0xff;
 418         arg[1] = (devc->trigger_mask[stage] >> 8) & 0xff;
 419         arg[2] = (devc->trigger_mask[stage] >> 16) & 0xff;
 420         arg[3] = (devc->trigger_mask[stage] >> 24) & 0xff;
 421         if (send_longcommand(serial, cmd, arg) != SR_OK)
 422                 return SR_ERR;
 423
 424         cmd = CMD_SET_TRIGGER_VALUE + stage * 4;
 425         arg[0] = devc->trigger_value[stage] & 0xff;
 426         arg[1] = (devc->trigger_value[stage] >> 8) & 0xff;
 427         arg[2] = (devc->trigger_value[stage] >> 16) & 0xff;
 428         arg[3] = (devc->trigger_value[stage] >> 24) & 0xff;
 429         if (send_longcommand(serial, cmd, arg) != SR_OK)
 430                 return SR_ERR;
 431
 432         cmd = CMD_SET_TRIGGER_CONFIG + stage * 4;
 433         arg[0] = arg[1] = arg[3] = 0x00;
 434         arg[2] = stage;
 435         if (stage == devc->num_stages)
 436                 /* Last stage, fire when this one matches. */
 437                 arg[3] |= TRIGGER_START;
 438         if (send_longcommand(serial, cmd, arg) != SR_OK)
 439                 return SR_ERR;
 440
 441         return SR_OK;
 442 }
 443
 444 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 445 {
 446         struct dev_context *devc;
 447         struct sr_serial_dev_inst *serial;
 448         uint16_t samplecount, readcount, delaycount;
 449         uint8_t ols_changrp_mask, arg[4];
 450         int num_ols_changrp;
 451         int ret, i;
 452
 453         if (sdi->status != SR_ST_ACTIVE)
 454                 return SR_ERR_DEV_CLOSED;
 455
 456         devc = sdi->priv;
 457         serial = sdi->conn;
 458
 459         ols_channel_mask(sdi);
 460
 461         num_ols_changrp = 0;
 462         ols_changrp_mask = 0;
 463         for (i = 0; i < 4; i++) {
 464                 if (devc->channel_mask & (0xff << (i * 8))) {
 465                         ols_changrp_mask |= (1 << i);
 466                         num_ols_changrp++;
 467                 }
 468         }
 469
 470         /*
 471          * Limit readcount to prevent reading past the end of the hardware
 472          * buffer.
 473          */
 474         samplecount = MIN(devc->max_samples / num_ols_changrp, devc->limit_samples);
 475         readcount = samplecount / 4;
 476
 477         /* Rather read too many samples than too few. */
 478         if (samplecount % 4 != 0)
 479                 readcount++;
 480
 481         /* Basic triggers. */
 482         if (ols_convert_trigger(sdi) != SR_OK) {
 483                 sr_err("Failed to configure channels.");
 484                 return SR_ERR;
 485         }
 486         if (devc->num_stages > 0) {
 487                 delaycount = readcount * (1 - devc->capture_ratio / 100.0);
 488                 devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages;
 489                 for (i = 0; i <= devc->num_stages; i++) {
 490                         sr_dbg("Setting OLS stage %d trigger.", i);
 491                         if ((ret = set_trigger(sdi, i)) != SR_OK)
 492                                 return ret;
 493                 }
 494         } else {
 495                 /* No triggers configured, force trigger on first stage. */
 496                 sr_dbg("Forcing trigger at stage 0.");
 497                 if ((ret = set_trigger(sdi, 0)) != SR_OK)
 498                         return ret;
 499                 delaycount = readcount;
 500         }
 501
 502         /* Samplerate. */
 503         sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)",
 504                         devc->cur_samplerate, devc->cur_samplerate_divider);
 505         arg[0] = devc->cur_samplerate_divider & 0xff;
 506         arg[1] = (devc->cur_samplerate_divider & 0xff00) >> 8;
 507         arg[2] = (devc->cur_samplerate_divider & 0xff0000) >> 16;
 508         arg[3] = 0x00;
 509         if (send_longcommand(serial, CMD_SET_DIVIDER, arg) != SR_OK)
 510                 return SR_ERR;
 511
 512         /* Send sample limit and pre/post-trigger capture ratio. */
 513         sr_dbg("Setting sample limit %d, trigger point at %d",
 514                         (readcount - 1) * 4, (delaycount - 1) * 4);
 515         arg[0] = ((readcount - 1) & 0xff);
 516         arg[1] = ((readcount - 1) & 0xff00) >> 8;
 517         arg[2] = ((delaycount - 1) & 0xff);
 518         arg[3] = ((delaycount - 1) & 0xff00) >> 8;
 519         if (send_longcommand(serial, CMD_CAPTURE_SIZE, arg) != SR_OK)
 520                 return SR_ERR;
 521
 522         /* Flag register. */
 523         sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s",
 524                         devc->flag_reg & FLAG_INTERNAL_TEST_MODE ? "on": "off",
 525                         devc->flag_reg & FLAG_EXTERNAL_TEST_MODE ? "on": "off",
 526                         devc->flag_reg & FLAG_RLE ? "on" : "off",
 527                         devc->flag_reg & FLAG_FILTER ? "on": "off",
 528                         devc->flag_reg & FLAG_DEMUX ? "on" : "off");
 529         /*
 530          * Enable/disable OLS channel groups in the flag register according
 531          * to the channel mask. 1 means "disable channel".
 532          */
 533         devc->flag_reg |= ~(ols_changrp_mask << 2) & 0x3c;
 534         arg[0] = devc->flag_reg & 0xff;
 535         arg[1] = devc->flag_reg >> 8;
 536         arg[2] = arg[3] = 0x00;
 537         if (send_longcommand(serial, CMD_SET_FLAGS, arg) != SR_OK)
 538                 return SR_ERR;
 539
 540         /* Start acquisition on the device. */
 541         if (send_shortcommand(serial, CMD_RUN) != SR_OK)
 542                 return SR_ERR;
 543
 544         /* Reset all operational states. */
 545         devc->rle_count = devc->num_transfers = 0;
 546         devc->num_samples = devc->num_bytes = 0;
 547         devc->cnt_bytes = devc->cnt_samples = devc->cnt_samples_rle = 0;
 548         memset(devc->sample, 0, 4);
 549
 550         std_session_send_df_header(sdi, LOG_PREFIX);
 551
 552         /* If the device stops sending for longer than it takes to send a byte,
 553          * that means it's finished. But wait at least 100 ms to be safe.
 554          */
 555         serial_source_add(sdi->session, serial, G_IO_IN, 100,
 556                         ols_receive_data, (struct sr_dev_inst *)sdi);
 557
 558         return SR_OK;
 559 }
 560
 561 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 562 {
 563         abort_acquisition(sdi);
 564
 565         return SR_OK;
 566 }
 567
 568 static struct sr_dev_driver ols_driver_info = {
 569         .name = "ols",
 570         .longname = "Openbench Logic Sniffer",
 571         .api_version = 1,
 572         .init = std_init,
 573         .cleanup = std_cleanup,
 574         .scan = scan,
 575         .dev_list = std_dev_list,
 576         .dev_clear = NULL,
 577         .config_get = config_get,
 578         .config_set = config_set,
 579         .config_list = config_list,
 580         .dev_open = std_serial_dev_open,
 581         .dev_close = std_serial_dev_close,
 582         .dev_acquisition_start = dev_acquisition_start,
 583         .dev_acquisition_stop = dev_acquisition_stop,
 584         .context = NULL,
 585 };
 586 SR_REGISTER_DEV_DRIVER(ols_driver_info);