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 SR_PRIV struct sr_dev_driver ols_driver_info;
  89
  90 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  91 {
  92         struct sr_config *src;
  93         struct sr_dev_inst *sdi;
  94         struct drv_context *drvc;
  95         struct sr_serial_dev_inst *serial;
  96         GSList *l, *devices;
  97         int ret;
  98         unsigned int i;
  99         const char *conn, *serialcomm;
 100         char buf[8];
 101
 102         drvc = di->context;
 103
 104         devices = NULL;
 105
 106         conn = serialcomm = NULL;
 107         for (l = options; l; l = l->next) {
 108                 src = l->data;
 109                 switch (src->key) {
 110                 case SR_CONF_CONN:
 111                         conn = g_variant_get_string(src->data, NULL);
 112                         break;
 113                 case SR_CONF_SERIALCOMM:
 114                         serialcomm = g_variant_get_string(src->data, NULL);
 115                         break;
 116                 }
 117         }
 118         if (!conn)
 119                 return NULL;
 120
 121         if (!serialcomm)
 122                 serialcomm = SERIALCOMM;
 123
 124         serial = sr_serial_dev_inst_new(conn, serialcomm);
 125
 126         /* The discovery procedure is like this: first send the Reset
 127          * command (0x00) 5 times, since the device could be anywhere
 128          * in a 5-byte command. Then send the ID command (0x02).
 129          * If the device responds with 4 bytes ("OLS1" or "SLA1"), we
 130          * have a match.
 131          */
 132         sr_info("Probing %s.", conn);
 133         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
 134                 return NULL;
 135
 136         ret = SR_OK;
 137         for (i = 0; i < 5; i++) {
 138                 if ((ret = send_shortcommand(serial, CMD_RESET)) != SR_OK) {
 139                         sr_err("Port %s is not writable.", conn);
 140                         break;
 141                 }
 142         }
 143         if (ret != SR_OK) {
 144                 serial_close(serial);
 145                 sr_err("Could not use port %s. Quitting.", conn);
 146                 return NULL;
 147         }
 148         send_shortcommand(serial, CMD_ID);
 149
 150         g_usleep(RESPONSE_DELAY_US);
 151
 152         if (sp_input_waiting(serial->data) == 0) {
 153                 sr_dbg("Didn't get any reply.");
 154                 return NULL;
 155         }
 156
 157         ret = serial_read_blocking(serial, buf, 4, serial_timeout(serial, 4));
 158         if (ret != 4) {
 159                 sr_err("Invalid reply (expected 4 bytes, got %d).", ret);
 160                 return NULL;
 161         }
 162
 163         if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4)) {
 164                 sr_err("Invalid reply (expected '1SLO' or '1ALS', got "
 165                        "'%c%c%c%c').", buf[0], buf[1], buf[2], buf[3]);
 166                 return NULL;
 167         }
 168
 169         /* Definitely using the OLS protocol, check if it supports
 170          * the metadata command.
 171          */
 172         send_shortcommand(serial, CMD_METADATA);
 173
 174         g_usleep(RESPONSE_DELAY_US);
 175
 176         if (sp_input_waiting(serial->data) != 0) {
 177                 /* Got metadata. */
 178                 sdi = get_metadata(serial);
 179         } else {
 180                 /* Not an OLS -- some other board that uses the sump protocol. */
 181                 sr_info("Device does not support metadata.");
 182                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 183                 sdi->status = SR_ST_INACTIVE;
 184                 sdi->vendor = g_strdup("Sump");
 185                 sdi->model = g_strdup("Logic Analyzer");
 186                 sdi->version = g_strdup("v1.0");
 187                 sdi->driver = di;
 188                 for (i = 0; i < ARRAY_SIZE(ols_channel_names); i++)
 189                         sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
 190                                         ols_channel_names[i]);
 191                 sdi->priv = ols_dev_new();
 192         }
 193         /* Configure samplerate and divider. */
 194         if (ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK)
 195                 sr_dbg("Failed to set default samplerate (%"PRIu64").",
 196                                 DEFAULT_SAMPLERATE);
 197         sdi->inst_type = SR_INST_SERIAL;
 198         sdi->conn = serial;
 199
 200         drvc->instances = g_slist_append(drvc->instances, sdi);
 201         devices = g_slist_append(devices, sdi);
 202
 203         serial_close(serial);
 204
 205         return devices;
 206 }
 207
 208 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 209                 const struct sr_channel_group *cg)
 210 {
 211         struct dev_context *devc;
 212
 213         (void)cg;
 214
 215         if (!sdi)
 216                 return SR_ERR_ARG;
 217
 218         devc = sdi->priv;
 219         switch (key) {
 220         case SR_CONF_SAMPLERATE:
 221                 *data = g_variant_new_uint64(devc->cur_samplerate);
 222                 break;
 223         case SR_CONF_CAPTURE_RATIO:
 224                 *data = g_variant_new_uint64(devc->capture_ratio);
 225                 break;
 226         case SR_CONF_LIMIT_SAMPLES:
 227                 *data = g_variant_new_uint64(devc->limit_samples);
 228                 break;
 229         case SR_CONF_PATTERN_MODE:
 230                 if (devc->flag_reg & FLAG_EXTERNAL_TEST_MODE)
 231                         *data = g_variant_new_string(STR_PATTERN_EXTERNAL);
 232                 else if (devc->flag_reg & FLAG_INTERNAL_TEST_MODE)
 233                         *data = g_variant_new_string(STR_PATTERN_INTERNAL);
 234                 else
 235                         *data = g_variant_new_string(STR_PATTERN_NONE);
 236                 break;
 237         case SR_CONF_RLE:
 238                 *data = g_variant_new_boolean(devc->flag_reg & FLAG_RLE ? TRUE : FALSE);
 239                 break;
 240         default:
 241                 return SR_ERR_NA;
 242         }
 243
 244         return SR_OK;
 245 }
 246
 247 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 248                 const struct sr_channel_group *cg)
 249 {
 250         struct dev_context *devc;
 251         uint16_t flag;
 252         uint64_t tmp_u64;
 253         int ret;
 254         const char *stropt;
 255
 256         (void)cg;
 257
 258         if (sdi->status != SR_ST_ACTIVE)
 259                 return SR_ERR_DEV_CLOSED;
 260
 261         devc = sdi->priv;
 262
 263         switch (key) {
 264         case SR_CONF_SAMPLERATE:
 265                 tmp_u64 = g_variant_get_uint64(data);
 266                 if (tmp_u64 < samplerates[0] || tmp_u64 > samplerates[1])
 267                         return SR_ERR_SAMPLERATE;
 268                 ret = ols_set_samplerate(sdi, g_variant_get_uint64(data));
 269                 break;
 270         case SR_CONF_LIMIT_SAMPLES:
 271                 tmp_u64 = g_variant_get_uint64(data);
 272                 if (tmp_u64 < MIN_NUM_SAMPLES)
 273                         return SR_ERR;
 274                 devc->limit_samples = tmp_u64;
 275                 ret = SR_OK;
 276                 break;
 277         case SR_CONF_CAPTURE_RATIO:
 278                 devc->capture_ratio = g_variant_get_uint64(data);
 279                 if (devc->capture_ratio < 0 || devc->capture_ratio > 100)
 280                         ret = SR_ERR;
 281                 else
 282                         ret = SR_OK;
 283                 break;
 284         case SR_CONF_EXTERNAL_CLOCK:
 285                 if (g_variant_get_boolean(data)) {
 286                         sr_info("Enabling external clock.");
 287                         devc->flag_reg |= FLAG_CLOCK_EXTERNAL;
 288                 } else {
 289                         sr_info("Disabled external clock.");
 290                         devc->flag_reg &= ~FLAG_CLOCK_EXTERNAL;
 291                 }
 292                 ret = SR_OK;
 293                 break;
 294         case SR_CONF_PATTERN_MODE:
 295                 stropt = g_variant_get_string(data, NULL);
 296                 ret = SR_OK;
 297                 flag = 0xffff;
 298                 if (!strcmp(stropt, STR_PATTERN_NONE)) {
 299                         sr_info("Disabling test modes.");
 300                         flag = 0x0000;
 301                 }else if (!strcmp(stropt, STR_PATTERN_INTERNAL)) {
 302                         sr_info("Enabling internal test mode.");
 303                         flag = FLAG_INTERNAL_TEST_MODE;
 304                 } else if (!strcmp(stropt, STR_PATTERN_EXTERNAL)) {
 305                         sr_info("Enabling external test mode.");
 306                         flag = FLAG_EXTERNAL_TEST_MODE;
 307                 } else {
 308                         ret = SR_ERR;
 309                 }
 310                 if (flag != 0xffff) {
 311                         devc->flag_reg &= ~(FLAG_INTERNAL_TEST_MODE | FLAG_EXTERNAL_TEST_MODE);
 312                         devc->flag_reg |= flag;
 313                 }
 314                 break;
 315         case SR_CONF_SWAP:
 316                 if (g_variant_get_boolean(data)) {
 317                         sr_info("Enabling channel swapping.");
 318                         devc->flag_reg |= FLAG_SWAP_CHANNELS;
 319                 } else {
 320                         sr_info("Disabling channel swapping.");
 321                         devc->flag_reg &= ~FLAG_SWAP_CHANNELS;
 322                 }
 323                 ret = SR_OK;
 324                 break;
 325
 326         case SR_CONF_RLE:
 327                 if (g_variant_get_boolean(data)) {
 328                         sr_info("Enabling RLE.");
 329                         devc->flag_reg |= FLAG_RLE;
 330                 } else {
 331                         sr_info("Disabling RLE.");
 332                         devc->flag_reg &= ~FLAG_RLE;
 333                 }
 334                 ret = SR_OK;
 335                 break;
 336         default:
 337                 ret = SR_ERR_NA;
 338         }
 339
 340         return ret;
 341 }
 342
 343 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 344                 const struct sr_channel_group *cg)
 345 {
 346         struct dev_context *devc;
 347         GVariant *gvar, *grange[2];
 348         GVariantBuilder gvb;
 349         int num_ols_changrp, i;
 350
 351         (void)cg;
 352
 353         switch (key) {
 354         case SR_CONF_SCAN_OPTIONS:
 355                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 356                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 357                 break;
 358         case SR_CONF_DEVICE_OPTIONS:
 359                 if (!sdi)
 360                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 361                                         drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 362                 else
 363                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 364                                         devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 365                 break;
 366         case SR_CONF_SAMPLERATE:
 367                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 368                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
 369                                 ARRAY_SIZE(samplerates), sizeof(uint64_t));
 370                 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
 371                 *data = g_variant_builder_end(&gvb);
 372                 break;
 373         case SR_CONF_TRIGGER_MATCH:
 374                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 375                                 trigger_matches, ARRAY_SIZE(trigger_matches),
 376                                 sizeof(int32_t));
 377                 break;
 378         case SR_CONF_PATTERN_MODE:
 379                 *data = g_variant_new_strv(patterns, ARRAY_SIZE(patterns));
 380                 break;
 381         case SR_CONF_LIMIT_SAMPLES:
 382                 if (!sdi)
 383                         return SR_ERR_ARG;
 384                 devc = sdi->priv;
 385                 if (devc->flag_reg & FLAG_RLE)
 386                         return SR_ERR_NA;
 387                 if (devc->max_samples == 0)
 388                         /* Device didn't specify sample memory size in metadata. */
 389                         return SR_ERR_NA;
 390                 /*
 391                  * Channel groups are turned off if no channels in that group are
 392                  * enabled, making more room for samples for the enabled group.
 393                 */
 394                 ols_channel_mask(sdi);
 395                 num_ols_changrp = 0;
 396                 for (i = 0; i < 4; i++) {
 397                         if (devc->channel_mask & (0xff << (i * 8)))
 398                                 num_ols_changrp++;
 399                 }
 400                 grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES);
 401                 if (num_ols_changrp)
 402                         grange[1] = g_variant_new_uint64(devc->max_samples / num_ols_changrp);
 403                 else
 404                         grange[1] = g_variant_new_uint64(MIN_NUM_SAMPLES);
 405                 *data = g_variant_new_tuple(grange, 2);
 406                 break;
 407         default:
 408                 return SR_ERR_NA;
 409         }
 410
 411         return SR_OK;
 412 }
 413
 414 static int set_trigger(const struct sr_dev_inst *sdi, int stage)
 415 {
 416         struct dev_context *devc;
 417         struct sr_serial_dev_inst *serial;
 418         uint8_t cmd, arg[4];
 419
 420         devc = sdi->priv;
 421         serial = sdi->conn;
 422
 423         cmd = CMD_SET_TRIGGER_MASK + stage * 4;
 424         arg[0] = devc->trigger_mask[stage] & 0xff;
 425         arg[1] = (devc->trigger_mask[stage] >> 8) & 0xff;
 426         arg[2] = (devc->trigger_mask[stage] >> 16) & 0xff;
 427         arg[3] = (devc->trigger_mask[stage] >> 24) & 0xff;
 428         if (send_longcommand(serial, cmd, arg) != SR_OK)
 429                 return SR_ERR;
 430
 431         cmd = CMD_SET_TRIGGER_VALUE + stage * 4;
 432         arg[0] = devc->trigger_value[stage] & 0xff;
 433         arg[1] = (devc->trigger_value[stage] >> 8) & 0xff;
 434         arg[2] = (devc->trigger_value[stage] >> 16) & 0xff;
 435         arg[3] = (devc->trigger_value[stage] >> 24) & 0xff;
 436         if (send_longcommand(serial, cmd, arg) != SR_OK)
 437                 return SR_ERR;
 438
 439         cmd = CMD_SET_TRIGGER_CONFIG + stage * 4;
 440         arg[0] = arg[1] = arg[3] = 0x00;
 441         arg[2] = stage;
 442         if (stage == devc->num_stages)
 443                 /* Last stage, fire when this one matches. */
 444                 arg[3] |= TRIGGER_START;
 445         if (send_longcommand(serial, cmd, arg) != SR_OK)
 446                 return SR_ERR;
 447
 448         return SR_OK;
 449 }
 450
 451 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 452 {
 453         struct dev_context *devc;
 454         struct sr_serial_dev_inst *serial;
 455         uint16_t samplecount, readcount, delaycount;
 456         uint8_t ols_changrp_mask, arg[4];
 457         int num_ols_changrp;
 458         int ret, i;
 459
 460         if (sdi->status != SR_ST_ACTIVE)
 461                 return SR_ERR_DEV_CLOSED;
 462
 463         devc = sdi->priv;
 464         serial = sdi->conn;
 465
 466         ols_channel_mask(sdi);
 467
 468         num_ols_changrp = 0;
 469         ols_changrp_mask = 0;
 470         for (i = 0; i < 4; i++) {
 471                 if (devc->channel_mask & (0xff << (i * 8))) {
 472                         ols_changrp_mask |= (1 << i);
 473                         num_ols_changrp++;
 474                 }
 475         }
 476
 477         /*
 478          * Limit readcount to prevent reading past the end of the hardware
 479          * buffer.
 480          */
 481         samplecount = MIN(devc->max_samples / num_ols_changrp, devc->limit_samples);
 482         readcount = samplecount / 4;
 483
 484         /* Rather read too many samples than too few. */
 485         if (samplecount % 4 != 0)
 486                 readcount++;
 487
 488         /* Basic triggers. */
 489         if (ols_convert_trigger(sdi) != SR_OK) {
 490                 sr_err("Failed to configure channels.");
 491                 return SR_ERR;
 492         }
 493         if (devc->num_stages > 0) {
 494                 delaycount = readcount * (1 - devc->capture_ratio / 100.0);
 495                 devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages;
 496                 for (i = 0; i <= devc->num_stages; i++) {
 497                         sr_dbg("Setting OLS stage %d trigger.", i);
 498                         if ((ret = set_trigger(sdi, i)) != SR_OK)
 499                                 return ret;
 500                 }
 501         } else {
 502                 /* No triggers configured, force trigger on first stage. */
 503                 sr_dbg("Forcing trigger at stage 0.");
 504                 if ((ret = set_trigger(sdi, 0)) != SR_OK)
 505                         return ret;
 506                 delaycount = readcount;
 507         }
 508
 509         /* Samplerate. */
 510         sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)",
 511                         devc->cur_samplerate, devc->cur_samplerate_divider);
 512         arg[0] = devc->cur_samplerate_divider & 0xff;
 513         arg[1] = (devc->cur_samplerate_divider & 0xff00) >> 8;
 514         arg[2] = (devc->cur_samplerate_divider & 0xff0000) >> 16;
 515         arg[3] = 0x00;
 516         if (send_longcommand(serial, CMD_SET_DIVIDER, arg) != SR_OK)
 517                 return SR_ERR;
 518
 519         /* Send sample limit and pre/post-trigger capture ratio. */
 520         sr_dbg("Setting sample limit %d, trigger point at %d",
 521                         (readcount - 1) * 4, (delaycount - 1) * 4);
 522         arg[0] = ((readcount - 1) & 0xff);
 523         arg[1] = ((readcount - 1) & 0xff00) >> 8;
 524         arg[2] = ((delaycount - 1) & 0xff);
 525         arg[3] = ((delaycount - 1) & 0xff00) >> 8;
 526         if (send_longcommand(serial, CMD_CAPTURE_SIZE, arg) != SR_OK)
 527                 return SR_ERR;
 528
 529         /* Flag register. */
 530         sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s",
 531                         devc->flag_reg & FLAG_INTERNAL_TEST_MODE ? "on": "off",
 532                         devc->flag_reg & FLAG_EXTERNAL_TEST_MODE ? "on": "off",
 533                         devc->flag_reg & FLAG_RLE ? "on" : "off",
 534                         devc->flag_reg & FLAG_FILTER ? "on": "off",
 535                         devc->flag_reg & FLAG_DEMUX ? "on" : "off");
 536         /*
 537          * Enable/disable OLS channel groups in the flag register according
 538          * to the channel mask. 1 means "disable channel".
 539          */
 540         devc->flag_reg |= ~(ols_changrp_mask << 2) & 0x3c;
 541         arg[0] = devc->flag_reg & 0xff;
 542         arg[1] = devc->flag_reg >> 8;
 543         arg[2] = arg[3] = 0x00;
 544         if (send_longcommand(serial, CMD_SET_FLAGS, arg) != SR_OK)
 545                 return SR_ERR;
 546
 547         /* Start acquisition on the device. */
 548         if (send_shortcommand(serial, CMD_RUN) != SR_OK)
 549                 return SR_ERR;
 550
 551         /* Reset all operational states. */
 552         devc->rle_count = devc->num_transfers = 0;
 553         devc->num_samples = devc->num_bytes = 0;
 554         devc->cnt_bytes = devc->cnt_samples = devc->cnt_samples_rle = 0;
 555         memset(devc->sample, 0, 4);
 556
 557         std_session_send_df_header(sdi, LOG_PREFIX);
 558
 559         /* If the device stops sending for longer than it takes to send a byte,
 560          * that means it's finished. But wait at least 100 ms to be safe.
 561          */
 562         serial_source_add(sdi->session, serial, G_IO_IN, 100,
 563                         ols_receive_data, (struct sr_dev_inst *)sdi);
 564
 565         return SR_OK;
 566 }
 567
 568 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 569 {
 570         abort_acquisition(sdi);
 571
 572         return SR_OK;
 573 }
 574
 575 SR_PRIV struct sr_dev_driver ols_driver_info = {
 576         .name = "ols",
 577         .longname = "Openbench Logic Sniffer",
 578         .api_version = 1,
 579         .init = std_init,
 580         .cleanup = std_cleanup,
 581         .scan = scan,
 582         .dev_list = std_dev_list,
 583         .dev_clear = NULL,
 584         .config_get = config_get,
 585         .config_set = config_set,
 586         .config_list = config_list,
 587         .dev_open = std_serial_dev_open,
 588         .dev_close = std_serial_dev_close,
 589         .dev_acquisition_start = dev_acquisition_start,
 590         .dev_acquisition_stop = dev_acquisition_stop,
 591         .context = NULL,
 592 };