hardware/zeroplus-logic-cube/api.c

   1 /*
   2  * This file is part of the sigrok project.
   3  *
   4  * Copyright (C) 2010-2012 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 "protocol.h"
  21
  22 #define VENDOR_NAME                     "ZEROPLUS"
  23 #define USB_INTERFACE                   0
  24 #define USB_CONFIGURATION               1
  25 #define NUM_TRIGGER_STAGES              4
  26 #define TRIGGER_TYPE                    "01"
  27 #define PACKET_SIZE                     2048    /* ?? */
  28
  29 //#define ZP_EXPERIMENTAL
  30
  31 struct zp_model {
  32         uint16_t vid;
  33         uint16_t pid;
  34         char *model_name;
  35         unsigned int channels;
  36         unsigned int sample_depth;      /* In Ksamples/channel */
  37         unsigned int max_sampling_freq;
  38 };
  39
  40 /*
  41  * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
  42  * same 128K sample depth.
  43  */
  44 static const struct zp_model zeroplus_models[] = {
  45         {0x0c12, 0x7009, "LAP-C(16064)",  16, 64,   100},
  46         {0x0c12, 0x700a, "LAP-C(16128)",  16, 128,  200},
  47         /* TODO: We don't know anything about these.
  48         {0x0c12, 0x700b, "LAP-C(32128)",  32, 128,  200},
  49         {0x0c12, 0x700c, "LAP-C(321000)", 32, 1024, 200},
  50         {0x0c12, 0x700d, "LAP-C(322000)", 32, 2048, 200},
  51         */
  52         {0x0c12, 0x700e, "LAP-C(16032)",  16, 32,   100},
  53         {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
  54         { 0, 0, 0, 0, 0, 0 }
  55 };
  56
  57 static const int32_t hwcaps[] = {
  58         SR_CONF_LOGIC_ANALYZER,
  59         SR_CONF_SAMPLERATE,
  60         SR_CONF_CAPTURE_RATIO,
  61         SR_CONF_LIMIT_SAMPLES,
  62 };
  63
  64 /*
  65  * ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
  66  * We currently ignore other untested/unsupported devices here.
  67  */
  68 static const char *probe_names[] = {
  69         "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  70         "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7",
  71         NULL,
  72 };
  73
  74 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
  75 static struct sr_dev_driver *di = &zeroplus_logic_cube_driver_info;
  76
  77 /*
  78  * The hardware supports more samplerates than these, but these are the
  79  * options hardcoded into the vendor's Windows GUI.
  80  */
  81
  82 static const uint64_t samplerates_100[] = {
  83         SR_HZ(100),
  84         SR_HZ(500),
  85         SR_KHZ(1),
  86         SR_KHZ(5),
  87         SR_KHZ(25),
  88         SR_KHZ(50),
  89         SR_KHZ(100),
  90         SR_KHZ(200),
  91         SR_KHZ(400),
  92         SR_KHZ(800),
  93         SR_MHZ(1),
  94         SR_MHZ(10),
  95         SR_MHZ(25),
  96         SR_MHZ(50),
  97         SR_MHZ(80),
  98         SR_MHZ(100),
  99 };
 100
 101 const uint64_t samplerates_200[] = {
 102         SR_HZ(100),
 103         SR_HZ(500),
 104         SR_KHZ(1),
 105         SR_KHZ(5),
 106         SR_KHZ(25),
 107         SR_KHZ(50),
 108         SR_KHZ(100),
 109         SR_KHZ(200),
 110         SR_KHZ(400),
 111         SR_KHZ(800),
 112         SR_MHZ(1),
 113         SR_MHZ(10),
 114         SR_MHZ(25),
 115         SR_MHZ(50),
 116         SR_MHZ(80),
 117         SR_MHZ(100),
 118         SR_MHZ(150),
 119         SR_MHZ(200),
 120 };
 121
 122 static int hw_dev_close(struct sr_dev_inst *sdi);
 123
 124 #if 0
 125 static int configure_probes(const struct sr_dev_inst *sdi)
 126 {
 127         struct dev_context *devc;
 128         const struct sr_probe *probe;
 129         const GSList *l;
 130         int probe_bit, stage, i;
 131         char *tc;
 132
 133         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 134         devc = sdi->priv;
 135
 136         devc->probe_mask = 0;
 137         for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
 138                 devc->trigger_mask[i] = 0;
 139                 devc->trigger_value[i] = 0;
 140         }
 141
 142         stage = -1;
 143         for (l = sdi->probes; l; l = l->next) {
 144                 probe = (struct sr_probe *)l->data;
 145                 if (probe->enabled == FALSE)
 146                         continue;
 147                 probe_bit = 1 << (probe->index);
 148                 devc->probe_mask |= probe_bit;
 149
 150                 if (probe->trigger) {
 151                         stage = 0;
 152                         for (tc = probe->trigger; *tc; tc++) {
 153                                 devc->trigger_mask[stage] |= probe_bit;
 154                                 if (*tc == '1')
 155                                         devc->trigger_value[stage] |= probe_bit;
 156                                 stage++;
 157                                 if (stage > NUM_TRIGGER_STAGES)
 158                                         return SR_ERR;
 159                         }
 160                 }
 161         }
 162
 163         return SR_OK;
 164 }
 165 #endif
 166
 167 static int configure_probes(const struct sr_dev_inst *sdi)
 168 {
 169         struct dev_context *devc;
 170         const GSList *l;
 171         const struct sr_probe *probe;
 172         char *tc;
 173         int type;
 174
 175         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 176         devc = sdi->priv;
 177
 178         for (l = sdi->probes; l; l = l->next) {
 179                 probe = (struct sr_probe *)l->data;
 180                 if (probe->enabled == FALSE)
 181                         continue;
 182
 183                 if ((tc = probe->trigger)) {
 184                         switch (*tc) {
 185                         case '1':
 186                                 type = TRIGGER_HIGH;
 187                                 break;
 188                         case '0':
 189                                 type = TRIGGER_LOW;
 190                                 break;
 191 #if 0
 192                         case 'r':
 193                                 type = TRIGGER_POSEDGE;
 194                                 break;
 195                         case 'f':
 196                                 type = TRIGGER_NEGEDGE;
 197                                 break;
 198                         case 'c':
 199                                 type = TRIGGER_ANYEDGE;
 200                                 break;
 201 #endif
 202                         default:
 203                                 return SR_ERR;
 204                         }
 205                         analyzer_add_trigger(probe->index, type);
 206                         devc->trigger = 1;
 207                 }
 208         }
 209
 210         return SR_OK;
 211 }
 212
 213 static int clear_instances(void)
 214 {
 215         GSList *l;
 216         struct sr_dev_inst *sdi;
 217         struct drv_context *drvc;
 218         struct dev_context *devc;
 219
 220         drvc = di->priv;
 221         for (l = drvc->instances; l; l = l->next) {
 222                 sdi = l->data;
 223                 if (!(devc = sdi->priv)) {
 224                         /* Log error, but continue cleaning up the rest. */
 225                         sr_err("%s: sdi->priv was NULL, continuing", __func__);
 226                         continue;
 227                 }
 228                 sr_usb_dev_inst_free(devc->usb);
 229                 /* Properly close all devices... */
 230                 hw_dev_close(sdi);
 231                 /* ...and free all their memory. */
 232                 sr_dev_inst_free(sdi);
 233         }
 234         g_slist_free(drvc->instances);
 235         drvc->instances = NULL;
 236
 237         return SR_OK;
 238 }
 239
 240 static int hw_init(struct sr_context *sr_ctx)
 241 {
 242         return std_hw_init(sr_ctx, di, "zeroplus: ");
 243 }
 244
 245 static GSList *hw_scan(GSList *options)
 246 {
 247         struct sr_dev_inst *sdi;
 248         struct sr_probe *probe;
 249         struct drv_context *drvc;
 250         struct dev_context *devc;
 251         const struct zp_model *prof;
 252         struct libusb_device_descriptor des;
 253         libusb_device **devlist;
 254         GSList *devices;
 255         int ret, devcnt, i, j;
 256
 257         (void)options;
 258
 259         drvc = di->priv;
 260
 261         devices = NULL;
 262
 263         clear_instances();
 264
 265         /* Find all ZEROPLUS analyzers and add them to device list. */
 266         devcnt = 0;
 267         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
 268
 269         for (i = 0; devlist[i]; i++) {
 270                 ret = libusb_get_device_descriptor(devlist[i], &des);
 271                 if (ret != 0) {
 272                         sr_err("Failed to get device descriptor: %s.",
 273                                libusb_error_name(ret));
 274                         continue;
 275                 }
 276
 277                 prof = NULL;
 278                 for (j = 0; j < zeroplus_models[j].vid; j++) {
 279                         if (des.idVendor == zeroplus_models[j].vid &&
 280                                 des.idProduct == zeroplus_models[j].pid) {
 281                                 prof = &zeroplus_models[j];
 282                         }
 283                 }
 284                 /* Skip if the device was not found. */
 285                 if (!prof)
 286                         continue;
 287                 sr_info("Found ZEROPLUS %s.", prof->model_name);
 288
 289                 /* Register the device with libsigrok. */
 290                 if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
 291                                 VENDOR_NAME, prof->model_name, NULL))) {
 292                         sr_err("%s: sr_dev_inst_new failed", __func__);
 293                         return NULL;
 294                 }
 295                 sdi->driver = di;
 296
 297                 /* Allocate memory for our private driver context. */
 298                 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 299                         sr_err("Device context malloc failed.");
 300                         return NULL;
 301                 }
 302
 303                 sdi->priv = devc;
 304                 devc->prof = prof;
 305                 devc->num_channels = prof->channels;
 306 #ifdef ZP_EXPERIMENTAL
 307                 devc->max_memory_size = 128 * 1024;
 308                 devc->max_samplerate = 200;
 309 #else
 310                 devc->max_memory_size = prof->sample_depth * 1024;
 311                 devc->max_samplerate = prof->max_sampling_freq;
 312 #endif
 313                 devc->max_samplerate *= SR_MHZ(1);
 314                 devc->memory_size = MEMORY_SIZE_8K;
 315                 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
 316
 317                 /* Fill in probelist according to this device's profile. */
 318                 for (j = 0; j < devc->num_channels; j++) {
 319                         if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
 320                                         probe_names[j])))
 321                                 return NULL;
 322                         sdi->probes = g_slist_append(sdi->probes, probe);
 323                 }
 324
 325                 devices = g_slist_append(devices, sdi);
 326                 drvc->instances = g_slist_append(drvc->instances, sdi);
 327                 devc->usb = sr_usb_dev_inst_new(
 328                         libusb_get_bus_number(devlist[i]),
 329                         libusb_get_device_address(devlist[i]), NULL);
 330                 devcnt++;
 331
 332         }
 333         libusb_free_device_list(devlist, 1);
 334
 335         return devices;
 336 }
 337
 338 static GSList *hw_dev_list(void)
 339 {
 340         return ((struct drv_context *)(di->priv))->instances;
 341 }
 342
 343 static int hw_dev_open(struct sr_dev_inst *sdi)
 344 {
 345         struct dev_context *devc;
 346         struct drv_context *drvc;
 347         libusb_device **devlist, *dev;
 348         struct libusb_device_descriptor des;
 349         int device_count, ret, i;
 350
 351         drvc = di->priv;
 352
 353         if (!(devc = sdi->priv)) {
 354                 sr_err("%s: sdi->priv was NULL", __func__);
 355                 return SR_ERR_ARG;
 356         }
 357
 358         device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx,
 359                                               &devlist);
 360         if (device_count < 0) {
 361                 sr_err("Failed to retrieve device list.");
 362                 return SR_ERR;
 363         }
 364
 365         dev = NULL;
 366         for (i = 0; i < device_count; i++) {
 367                 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
 368                         sr_err("Failed to get device descriptor: %s.",
 369                                libusb_error_name(ret));
 370                         continue;
 371                 }
 372                 if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
 373                     && libusb_get_device_address(devlist[i]) == devc->usb->address) {
 374                         dev = devlist[i];
 375                         break;
 376                 }
 377         }
 378         if (!dev) {
 379                 sr_err("Device on bus %d address %d disappeared!",
 380                        devc->usb->bus, devc->usb->address);
 381                 return SR_ERR;
 382         }
 383
 384         if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
 385                 sdi->status = SR_ST_ACTIVE;
 386                 sr_info("Opened device %d on %d.%d interface %d.",
 387                         sdi->index, devc->usb->bus,
 388                         devc->usb->address, USB_INTERFACE);
 389         } else {
 390                 sr_err("Failed to open device: %s.", libusb_error_name(ret));
 391                 return SR_ERR;
 392         }
 393
 394         ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
 395         if (ret < 0) {
 396                 sr_err("Unable to set USB configuration %d: %s.",
 397                        USB_CONFIGURATION, libusb_error_name(ret));
 398                 return SR_ERR;
 399         }
 400
 401         ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
 402         if (ret != 0) {
 403                 sr_err("Unable to claim interface: %s.",
 404                        libusb_error_name(ret));
 405                 return SR_ERR;
 406         }
 407
 408         /* Set default configuration after power on. */
 409         if (analyzer_read_status(devc->usb->devhdl) == 0)
 410                 analyzer_configure(devc->usb->devhdl);
 411
 412         analyzer_reset(devc->usb->devhdl);
 413         analyzer_initialize(devc->usb->devhdl);
 414
 415         //analyzer_set_memory_size(MEMORY_SIZE_512K);
 416         // analyzer_set_freq(g_freq, g_freq_scale);
 417         analyzer_set_trigger_count(1);
 418         // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
 419         // * get_memory_size(g_memory_size)) / 100) >> 2);
 420
 421 #if 0
 422         if (g_double_mode == 1)
 423                 analyzer_set_compression(COMPRESSION_DOUBLE);
 424         else if (g_compression == 1)
 425                 analyzer_set_compression(COMPRESSION_ENABLE);
 426         else
 427 #endif
 428         analyzer_set_compression(COMPRESSION_NONE);
 429
 430         if (devc->cur_samplerate == 0) {
 431                 /* Samplerate hasn't been set. Default to 1MHz. */
 432                 analyzer_set_freq(1, FREQ_SCALE_MHZ);
 433                 devc->cur_samplerate = SR_MHZ(1);
 434         }
 435
 436         return SR_OK;
 437 }
 438
 439 static int hw_dev_close(struct sr_dev_inst *sdi)
 440 {
 441         struct dev_context *devc;
 442
 443         devc = sdi->priv;
 444
 445         if (!devc->usb->devhdl)
 446                 return SR_ERR;
 447
 448         sr_info("Closing device %d on %d.%d interface %d.", sdi->index,
 449                 devc->usb->bus, devc->usb->address, USB_INTERFACE);
 450         libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
 451         libusb_reset_device(devc->usb->devhdl);
 452         libusb_close(devc->usb->devhdl);
 453         devc->usb->devhdl = NULL;
 454         sdi->status = SR_ST_INACTIVE;
 455
 456         return SR_OK;
 457 }
 458
 459 static int hw_cleanup(void)
 460 {
 461         struct drv_context *drvc;
 462
 463         if (!(drvc = di->priv))
 464                 return SR_OK;
 465
 466         clear_instances();
 467
 468         return SR_OK;
 469 }
 470
 471 static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
 472 {
 473         struct dev_context *devc;
 474
 475         switch (id) {
 476         case SR_CONF_SAMPLERATE:
 477                 if (sdi) {
 478                         devc = sdi->priv;
 479                         *data = g_variant_new_uint64(devc->cur_samplerate);
 480                         sr_spew("Returning samplerate: %" PRIu64 "Hz.",
 481                                 devc->cur_samplerate);
 482                 } else
 483                         return SR_ERR;
 484                 break;
 485         default:
 486                 return SR_ERR_ARG;
 487         }
 488
 489         return SR_OK;
 490 }
 491
 492 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
 493 {
 494         struct dev_context *devc;
 495
 496         if (!sdi) {
 497                 sr_err("%s: sdi was NULL", __func__);
 498                 return SR_ERR_ARG;
 499         }
 500
 501         if (!(devc = sdi->priv)) {
 502                 sr_err("%s: sdi->priv was NULL", __func__);
 503                 return SR_ERR_ARG;
 504         }
 505
 506         switch (id) {
 507         case SR_CONF_SAMPLERATE:
 508                 return zp_set_samplerate(devc, g_variant_get_uint64(data));
 509         case SR_CONF_LIMIT_SAMPLES:
 510                 return set_limit_samples(devc, g_variant_get_uint64(data));
 511         case SR_CONF_CAPTURE_RATIO:
 512                 return set_capture_ratio(devc, g_variant_get_uint64(data));
 513         default:
 514                 return SR_ERR;
 515         }
 516
 517         return SR_OK;
 518 }
 519
 520 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
 521 {
 522         struct dev_context *devc;
 523         GVariant *gvar;
 524         GVariantBuilder gvb;
 525
 526         switch (key) {
 527         case SR_CONF_DEVICE_OPTIONS:
 528                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 529                                 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
 530                 break;
 531         case SR_CONF_SAMPLERATE:
 532                 devc = sdi->priv;
 533                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 534                 if (devc->prof->max_sampling_freq == 100) {
 535                         gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
 536                                         samplerates_100, ARRAY_SIZE(samplerates_100),
 537                                         sizeof(uint64_t));
 538                 } else if (devc->prof->max_sampling_freq == 200) {
 539                         gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
 540                                         samplerates_200, ARRAY_SIZE(samplerates_200),
 541                                         sizeof(uint64_t));
 542                 } else {
 543                         sr_err("Internal error: Unknown max. samplerate: %d.",
 544                                devc->prof->max_sampling_freq);
 545                         return SR_ERR_ARG;
 546                 }
 547                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 548                 *data = g_variant_builder_end(&gvb);
 549                 break;
 550         case SR_CONF_TRIGGER_TYPE:
 551                 *data = g_variant_new_string(TRIGGER_TYPE);
 552                 break;
 553         default:
 554                 return SR_ERR_ARG;
 555         }
 556
 557         return SR_OK;
 558 }
 559
 560 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 561                 void *cb_data)
 562 {
 563         struct sr_datafeed_packet packet;
 564         struct sr_datafeed_logic logic;
 565         //uint64_t samples_read;
 566         int res;
 567         unsigned int packet_num, n;
 568         unsigned char *buf;
 569         struct dev_context *devc;
 570
 571         if (!(devc = sdi->priv)) {
 572                 sr_err("%s: sdi->priv was NULL", __func__);
 573                 return SR_ERR_ARG;
 574         }
 575
 576         if (configure_probes(sdi) != SR_OK) {
 577                 sr_err("Failed to configure probes.");
 578                 return SR_ERR;
 579         }
 580
 581         set_triggerbar(devc);
 582
 583         /* Push configured settings to device. */
 584         analyzer_configure(devc->usb->devhdl);
 585
 586         analyzer_start(devc->usb->devhdl);
 587         sr_info("Waiting for data.");
 588         analyzer_wait_data(devc->usb->devhdl);
 589
 590         sr_info("Stop address    = 0x%x.",
 591                 analyzer_get_stop_address(devc->usb->devhdl));
 592         sr_info("Now address     = 0x%x.",
 593                 analyzer_get_now_address(devc->usb->devhdl));
 594         sr_info("Trigger address = 0x%x.",
 595                 analyzer_get_trigger_address(devc->usb->devhdl));
 596
 597         /* Send header packet to the session bus. */
 598         std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
 599
 600         if (!(buf = g_try_malloc(PACKET_SIZE))) {
 601                 sr_err("Packet buffer malloc failed.");
 602                 return SR_ERR_MALLOC;
 603         }
 604
 605         //samples_read = 0;
 606         analyzer_read_start(devc->usb->devhdl);
 607         /* Send the incoming transfer to the session bus. */
 608         n = get_memory_size(devc->memory_size);
 609         if (devc->max_memory_size * 4 < n)
 610                 n = devc->max_memory_size * 4;
 611         for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
 612                 res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
 613                 sr_info("Tried to read %d bytes, actually read %d bytes.",
 614                         PACKET_SIZE, res);
 615
 616                 packet.type = SR_DF_LOGIC;
 617                 packet.payload = &logic;
 618                 logic.length = PACKET_SIZE;
 619                 logic.unitsize = 4;
 620                 logic.data = buf;
 621                 sr_session_send(cb_data, &packet);
 622                 //samples_read += res / 4;
 623         }
 624         analyzer_read_stop(devc->usb->devhdl);
 625         g_free(buf);
 626
 627         packet.type = SR_DF_END;
 628         sr_session_send(cb_data, &packet);
 629
 630         return SR_OK;
 631 }
 632
 633 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
 634 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 635 {
 636         struct sr_datafeed_packet packet;
 637         struct dev_context *devc;
 638
 639         packet.type = SR_DF_END;
 640         sr_session_send(cb_data, &packet);
 641
 642         if (!(devc = sdi->priv)) {
 643                 sr_err("%s: sdi->priv was NULL", __func__);
 644                 return SR_ERR_BUG;
 645         }
 646
 647         analyzer_reset(devc->usb->devhdl);
 648         /* TODO: Need to cancel and free any queued up transfers. */
 649
 650         return SR_OK;
 651 }
 652
 653 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
 654         .name = "zeroplus-logic-cube",
 655         .longname = "ZEROPLUS Logic Cube LAP-C series",
 656         .api_version = 1,
 657         .init = hw_init,
 658         .cleanup = hw_cleanup,
 659         .scan = hw_scan,
 660         .dev_list = hw_dev_list,
 661         .dev_clear = hw_cleanup,
 662         .config_get = config_get,
 663         .config_set = config_set,
 664         .config_list = config_list,
 665         .dev_open = hw_dev_open,
 666         .dev_close = hw_dev_close,
 667         .dev_acquisition_start = hw_dev_acquisition_start,
 668         .dev_acquisition_stop = hw_dev_acquisition_stop,
 669         .priv = NULL,
 670 };