hardware/zeroplus-logic-cube/zeroplus.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 <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <sys/time.h>
  24 #include <inttypes.h>
  25 #include <glib.h>
  26 #include <libusb.h>
  27 #include "config.h"
  28 #include "libsigrok.h"
  29 #include "libsigrok-internal.h"
  30 #include "analyzer.h"
  31
  32 #define USB_VENDOR                      0x0c12
  33
  34 #define VENDOR_NAME                     "ZEROPLUS"
  35 #define MODEL_NAME                      "Logic Cube LAP-C"
  36 #define MODEL_VERSION                   NULL
  37
  38 #define NUM_PROBES                      16
  39 #define USB_INTERFACE                   0
  40 #define USB_CONFIGURATION               1
  41 #define NUM_TRIGGER_STAGES              4
  42 #define TRIGGER_TYPES                   "01"
  43
  44 #define PACKET_SIZE                     2048    /* ?? */
  45
  46 typedef struct {
  47         unsigned short vid;
  48         unsigned short pid;
  49         char *model_name;
  50         unsigned int channels;
  51         unsigned int sample_depth;      /* In Ksamples/channel */
  52         unsigned int max_sampling_freq;
  53 } model_t;
  54
  55 /*
  56  * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
  57  * same 128K sample depth.
  58  */
  59 static model_t zeroplus_models[] = {
  60         {0x0c12, 0x7009, "LAP-C(16064)",  16, 64,   100},
  61         {0x0c12, 0x700A, "LAP-C(16128)",  16, 128,  200},
  62         /* TODO: we don't know anything about these
  63         {0x0c12, 0x700B, "LAP-C(32128)",  32, 128,  200},
  64         {0x0c12, 0x700C, "LAP-C(321000)", 32, 1024, 200},
  65         {0x0c12, 0x700D, "LAP-C(322000)", 32, 2048, 200},
  66         */
  67         {0x0c12, 0x700E, "LAP-C(16032)",  16, 32,   100},
  68         {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
  69         { 0, 0, 0, 0, 0, 0 }
  70 };
  71
  72 static const int hwcaps[] = {
  73         SR_HWCAP_LOGIC_ANALYZER,
  74         SR_HWCAP_SAMPLERATE,
  75         SR_HWCAP_CAPTURE_RATIO,
  76
  77         /* These are really implemented in the driver, not the hardware. */
  78         SR_HWCAP_LIMIT_SAMPLES,
  79         0,
  80 };
  81
  82 /*
  83  * ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
  84  * We currently ignore other untested/unsupported devices here.
  85  */
  86 static const char *probe_names[NUM_PROBES + 1] = {
  87         "A0",
  88         "A1",
  89         "A2",
  90         "A3",
  91         "A4",
  92         "A5",
  93         "A6",
  94         "A7",
  95         "B0",
  96         "B1",
  97         "B2",
  98         "B3",
  99         "B4",
 100         "B5",
 101         "B6",
 102         "B7",
 103         NULL,
 104 };
 105
 106 /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */
 107 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
 108 static struct sr_dev_driver *zdi = &zeroplus_logic_cube_driver_info;
 109
 110 static libusb_context *usb_context = NULL;
 111
 112 /*
 113  * The hardware supports more samplerates than these, but these are the
 114  * options hardcoded into the vendor's Windows GUI.
 115  */
 116
 117 /*
 118  * TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
 119  * that high.
 120  */
 121 static const uint64_t supported_samplerates[] = {
 122         SR_HZ(100),
 123         SR_HZ(500),
 124         SR_KHZ(1),
 125         SR_KHZ(5),
 126         SR_KHZ(25),
 127         SR_KHZ(50),
 128         SR_KHZ(100),
 129         SR_KHZ(200),
 130         SR_KHZ(400),
 131         SR_KHZ(800),
 132         SR_MHZ(1),
 133         SR_MHZ(10),
 134         SR_MHZ(25),
 135         SR_MHZ(50),
 136         SR_MHZ(80),
 137         SR_MHZ(100),
 138         SR_MHZ(150),
 139         SR_MHZ(200),
 140         0,
 141 };
 142
 143 static const struct sr_samplerates samplerates = {
 144         0,
 145         0,
 146         0,
 147         supported_samplerates,
 148 };
 149
 150 /* Private, per-device-instance driver context. */
 151 struct dev_context {
 152         uint64_t cur_samplerate;
 153         uint64_t limit_samples;
 154         int num_channels; /* TODO: This isn't initialized before it's needed :( */
 155         uint64_t memory_size;
 156         uint8_t probe_mask;
 157         uint8_t trigger_mask[NUM_TRIGGER_STAGES];
 158         uint8_t trigger_value[NUM_TRIGGER_STAGES];
 159         // uint8_t trigger_buffer[NUM_TRIGGER_STAGES];
 160
 161         /* TODO: this belongs in the device instance */
 162         struct sr_usb_dev_inst *usb;
 163 };
 164
 165 static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
 166                 const void *value);
 167 static int hw_dev_close(struct sr_dev_inst *sdi);
 168
 169 static unsigned int get_memory_size(int type)
 170 {
 171         if (type == MEMORY_SIZE_8K)
 172                 return 8 * 1024;
 173         else if (type == MEMORY_SIZE_64K)
 174                 return 64 * 1024;
 175         else if (type == MEMORY_SIZE_128K)
 176                 return 128 * 1024;
 177         else if (type == MEMORY_SIZE_512K)
 178                 return 512 * 1024;
 179         else
 180                 return 0;
 181 }
 182
 183 static int configure_probes(const struct sr_dev_inst *sdi)
 184 {
 185         struct dev_context *devc;
 186         const struct sr_probe *probe;
 187         const GSList *l;
 188         int probe_bit, stage, i;
 189         char *tc;
 190
 191         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 192         devc = sdi->priv;
 193
 194         devc->probe_mask = 0;
 195         for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
 196                 devc->trigger_mask[i] = 0;
 197                 devc->trigger_value[i] = 0;
 198         }
 199
 200         stage = -1;
 201         for (l = sdi->probes; l; l = l->next) {
 202                 probe = (struct sr_probe *)l->data;
 203                 if (probe->enabled == FALSE)
 204                         continue;
 205                 probe_bit = 1 << (probe->index);
 206                 devc->probe_mask |= probe_bit;
 207
 208                 if (probe->trigger) {
 209                         stage = 0;
 210                         for (tc = probe->trigger; *tc; tc++) {
 211                                 devc->trigger_mask[stage] |= probe_bit;
 212                                 if (*tc == '1')
 213                                         devc->trigger_value[stage] |= probe_bit;
 214                                 stage++;
 215                                 if (stage > NUM_TRIGGER_STAGES)
 216                                         return SR_ERR;
 217                         }
 218                 }
 219         }
 220
 221         return SR_OK;
 222 }
 223
 224 static int clear_instances(void)
 225 {
 226         GSList *l;
 227         struct sr_dev_inst *sdi;
 228         struct drv_context *drvc;
 229         struct dev_context *devc;
 230
 231         drvc = zdi->priv;
 232         for (l = drvc->instances; l; l = l->next) {
 233                 sdi = l->data;
 234                 if (!(devc = sdi->priv)) {
 235                         /* Log error, but continue cleaning up the rest. */
 236                         sr_err("zeroplus: %s: sdi->priv was NULL, continuing", __func__);
 237                         continue;
 238                 }
 239                 sr_usb_dev_inst_free(devc->usb);
 240                 /* Properly close all devices... */
 241                 hw_dev_close(sdi);
 242                 /* ...and free all their memory. */
 243                 sr_dev_inst_free(sdi);
 244         }
 245         g_slist_free(drvc->instances);
 246         drvc->instances = NULL;
 247
 248         return SR_OK;
 249 }
 250
 251 /*
 252  * API callbacks
 253  */
 254
 255 static int hw_init(void)
 256 {
 257         struct drv_context *drvc;
 258
 259         if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
 260                 sr_err("zeroplus: driver context malloc failed.");
 261                 return SR_ERR;
 262         }
 263         zdi->priv = drvc;
 264
 265         if (libusb_init(&usb_context) != 0) {
 266                 sr_err("zp: Failed to initialize USB.");
 267                 return 0;
 268         }
 269
 270         return SR_OK;
 271 }
 272
 273 static GSList *hw_scan(GSList *options)
 274 {
 275         struct sr_dev_inst *sdi;
 276         struct sr_probe *probe;
 277         struct drv_context *drvc;
 278         struct dev_context *devc;
 279         model_t *prof;
 280         struct libusb_device_descriptor des;
 281         libusb_device **devlist;
 282         GSList *devices;
 283         int ret, devcnt, i, j;
 284
 285         (void)options;
 286         drvc = zdi->priv;
 287         devices = NULL;
 288
 289         clear_instances();
 290
 291         /* Find all ZEROPLUS analyzers and add them to device list. */
 292         devcnt = 0;
 293         libusb_get_device_list(usb_context, &devlist); /* TODO: Errors. */
 294
 295         for (i = 0; devlist[i]; i++) {
 296                 ret = libusb_get_device_descriptor(devlist[i], &des);
 297                 if (ret != 0) {
 298                         sr_err("zp: failed to get device descriptor: %d", ret);
 299                         continue;
 300                 }
 301
 302                 prof = NULL;
 303                 for (j = 0; j < zeroplus_models[j].vid; j++) {
 304                         if (des.idVendor == zeroplus_models[j].vid &&
 305                                 des.idProduct == zeroplus_models[j].pid) {
 306                                 prof = &zeroplus_models[j];
 307                         }
 308                 }
 309                 /* Skip if the device was not found */
 310                 if (!prof)
 311                         continue;
 312                 sr_info("zp: Found ZEROPLUS model %s", prof->model_name);
 313
 314                 /* Register the device with libsigrok. */
 315                 if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
 316                                 VENDOR_NAME, prof->model_name, NULL))) {
 317                         sr_err("zp: %s: sr_dev_inst_new failed", __func__);
 318                         return NULL;
 319                 }
 320                 sdi->driver = zdi;
 321
 322                 /* Allocate memory for our private driver context. */
 323                 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 324                         sr_err("zp: %s: devc malloc failed", __func__);
 325                         return 0;
 326                 }
 327                 sdi->priv = devc;
 328                 devc->num_channels = prof->channels;
 329                 devc->memory_size = prof->sample_depth * 1024;
 330                 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
 331
 332                 /* Fill in probelist according to this device's profile. */
 333                 for (j = 0; j < devc->num_channels; j++) {
 334                         if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
 335                                         probe_names[j])))
 336                                 return NULL;
 337                         sdi->probes = g_slist_append(sdi->probes, probe);
 338                 }
 339
 340                 devices = g_slist_append(devices, sdi);
 341                 drvc->instances = g_slist_append(drvc->instances, sdi);
 342                 devc->usb = sr_usb_dev_inst_new(
 343                         libusb_get_bus_number(devlist[i]),
 344                         libusb_get_device_address(devlist[i]), NULL);
 345                 devcnt++;
 346
 347         }
 348         libusb_free_device_list(devlist, 1);
 349
 350         return devices;
 351 }
 352
 353 static GSList *hw_dev_list(void)
 354 {
 355         struct drv_context *drvc;
 356
 357         drvc = zdi->priv;
 358
 359         return drvc->instances;
 360 }
 361
 362 static int hw_dev_open(struct sr_dev_inst *sdi)
 363 {
 364         struct dev_context *devc;
 365         libusb_device **devlist, *dev;
 366         struct libusb_device_descriptor des;
 367         int device_count, ret, i;
 368
 369         if (!(devc = sdi->priv)) {
 370                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 371                 return SR_ERR_ARG;
 372         }
 373
 374         device_count = libusb_get_device_list(usb_context, &devlist);
 375         if (device_count < 0) {
 376                 sr_err("zp: Failed to retrieve device list");
 377                 return SR_ERR;
 378         }
 379
 380         dev = NULL;
 381         for (i = 0; i < device_count; i++) {
 382                 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
 383                         sr_err("fx2lafw: Failed to get device descriptor: %d.",
 384                                ret);
 385                         continue;
 386                 }
 387                 if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
 388                     && libusb_get_device_address(devlist[i]) == devc->usb->address) {
 389                         dev = devlist[i];
 390                         break;
 391                 }
 392         }
 393         if (!dev) {
 394                 sr_err("device on bus %d address %d disappeared!",
 395                                 devc->usb->bus, devc->usb->address);
 396                 return SR_ERR;
 397         }
 398
 399         if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
 400                 sdi->status = SR_ST_ACTIVE;
 401                 sr_info("zp: opened device %d on %d.%d interface %d",
 402                         sdi->index, devc->usb->bus,
 403                         devc->usb->address, USB_INTERFACE);
 404         } else {
 405                 sr_err("zp: failed to open device: %d", ret);
 406                 return SR_ERR;
 407         }
 408
 409         ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
 410         if (ret < 0) {
 411                 sr_err("zp: Unable to set USB configuration %d: %d",
 412                        USB_CONFIGURATION, ret);
 413                 return SR_ERR;
 414         }
 415
 416         ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
 417         if (ret != 0) {
 418                 sr_err("zp: Unable to claim interface: %d", ret);
 419                 return SR_ERR;
 420         }
 421
 422         analyzer_reset(devc->usb->devhdl);
 423         analyzer_initialize(devc->usb->devhdl);
 424
 425         analyzer_set_memory_size(MEMORY_SIZE_512K);
 426         // analyzer_set_freq(g_freq, g_freq_scale);
 427         analyzer_set_trigger_count(1);
 428         // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
 429         // * get_memory_size(g_memory_size)) / 100) >> 2);
 430         analyzer_set_ramsize_trigger_address(
 431                 (100 * get_memory_size(MEMORY_SIZE_512K) / 100) >> 2);
 432
 433 #if 0
 434         if (g_double_mode == 1)
 435                 analyzer_set_compression(COMPRESSION_DOUBLE);
 436         else if (g_compression == 1)
 437                 analyzer_set_compression(COMPRESSION_ENABLE);
 438         else
 439 #endif
 440         analyzer_set_compression(COMPRESSION_NONE);
 441
 442         if (devc->cur_samplerate == 0) {
 443                 /* Samplerate hasn't been set. Default to the slowest one. */
 444                 if (hw_dev_config_set(sdi, SR_HWCAP_SAMPLERATE,
 445                      &samplerates.list[0]) == SR_ERR)
 446                         return SR_ERR;
 447         }
 448
 449         return SR_OK;
 450 }
 451
 452 static int hw_dev_close(struct sr_dev_inst *sdi)
 453 {
 454         struct dev_context *devc;
 455
 456         if (!(devc = sdi->priv)) {
 457                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 458                 return SR_ERR;
 459         }
 460
 461         if (!devc->usb->devhdl)
 462                 return SR_ERR;
 463
 464         sr_info("zp: closing device %d on %d.%d interface %d", sdi->index,
 465                 devc->usb->bus, devc->usb->address, USB_INTERFACE);
 466         libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
 467         libusb_reset_device(devc->usb->devhdl);
 468         libusb_close(devc->usb->devhdl);
 469         devc->usb->devhdl = NULL;
 470         sdi->status = SR_ST_INACTIVE;
 471
 472         return SR_OK;
 473 }
 474
 475 static int hw_cleanup(void)
 476 {
 477         struct drv_context *drvc;
 478
 479         if (!(drvc = zdi->priv))
 480                 return SR_OK;
 481
 482         clear_instances();
 483
 484         if (usb_context)
 485                 libusb_exit(usb_context);
 486         usb_context = NULL;
 487
 488         return SR_OK;
 489 }
 490
 491 static int hw_info_get(int info_id, const void **data,
 492        const struct sr_dev_inst *sdi)
 493 {
 494         struct dev_context *devc;
 495
 496         switch (info_id) {
 497         case SR_DI_HWCAPS:
 498                 *data = hwcaps;
 499                 break;
 500         case SR_DI_NUM_PROBES:
 501                 if (sdi) {
 502                         devc = sdi->priv;
 503                         *data = GINT_TO_POINTER(devc->num_channels);
 504                         sr_spew("zp: %s: Returning number of channels: %d.",
 505                                         __func__, devc->num_channels);
 506                 } else
 507                         return SR_ERR;
 508                 break;
 509         case SR_DI_PROBE_NAMES:
 510                 *data = probe_names;
 511                 sr_spew("zp: %s: Returning probenames.", __func__);
 512                 break;
 513         case SR_DI_SAMPLERATES:
 514                 *data = &samplerates;
 515                 sr_spew("zp: %s: Returning samplerates.", __func__);
 516                 break;
 517         case SR_DI_TRIGGER_TYPES:
 518                 *data = TRIGGER_TYPES;
 519                 sr_spew("zp: %s: Returning triggertypes: %s.", __func__, TRIGGER_TYPES);
 520                 break;
 521         case SR_DI_CUR_SAMPLERATE:
 522                 if (sdi) {
 523                         devc = sdi->priv;
 524                         *data = &devc->cur_samplerate;
 525                         sr_spew("zp: %s: Returning samplerate: %" PRIu64 "Hz.",
 526                                 __func__, devc->cur_samplerate);
 527                 } else
 528                         return SR_ERR;
 529                 break;
 530         default:
 531                 return SR_ERR_ARG;
 532         }
 533
 534         return SR_OK;
 535 }
 536
 537 static int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate)
 538 {
 539         struct dev_context *devc;
 540
 541         if (!sdi) {
 542                 sr_err("zp: %s: sdi was NULL", __func__);
 543                 return SR_ERR_ARG;
 544         }
 545
 546         if (!(devc = sdi->priv)) {
 547                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 548                 return SR_ERR_ARG;
 549         }
 550
 551         sr_info("zp: Setting samplerate to %" PRIu64 "Hz.", samplerate);
 552
 553         if (samplerate > SR_MHZ(1))
 554                 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
 555         else if (samplerate > SR_KHZ(1))
 556                 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
 557         else
 558                 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
 559
 560         devc->cur_samplerate = samplerate;
 561
 562         return SR_OK;
 563 }
 564
 565 static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
 566                 const void *value)
 567 {
 568         struct dev_context *devc;
 569
 570         if (!(devc = sdi->priv)) {
 571                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 572                 return SR_ERR_ARG;
 573         }
 574
 575         switch (hwcap) {
 576         case SR_HWCAP_SAMPLERATE:
 577                 return set_samplerate(sdi, *(const uint64_t *)value);
 578         case SR_HWCAP_LIMIT_SAMPLES:
 579                 devc->limit_samples = *(const uint64_t *)value;
 580                 return SR_OK;
 581         default:
 582                 return SR_ERR;
 583         }
 584 }
 585
 586 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 587                 void *cb_data)
 588 {
 589         struct sr_datafeed_packet packet;
 590         struct sr_datafeed_logic logic;
 591         struct sr_datafeed_header header;
 592         struct sr_datafeed_meta_logic meta;
 593         uint64_t samples_read;
 594         int res;
 595         unsigned int packet_num;
 596         unsigned char *buf;
 597         struct dev_context *devc;
 598
 599         if (!(devc = sdi->priv)) {
 600                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 601                 return SR_ERR_ARG;
 602         }
 603
 604         if (configure_probes(sdi) != SR_OK) {
 605                 sr_err("zp: failed to configured probes");
 606                 return SR_ERR;
 607         }
 608
 609         /* push configured settings to device */
 610         analyzer_configure(devc->usb->devhdl);
 611
 612         analyzer_start(devc->usb->devhdl);
 613         sr_info("zp: Waiting for data");
 614         analyzer_wait_data(devc->usb->devhdl);
 615
 616         sr_info("zp: Stop address    = 0x%x",
 617                 analyzer_get_stop_address(devc->usb->devhdl));
 618         sr_info("zp: Now address     = 0x%x",
 619                 analyzer_get_now_address(devc->usb->devhdl));
 620         sr_info("zp: Trigger address = 0x%x",
 621                 analyzer_get_trigger_address(devc->usb->devhdl));
 622
 623         packet.type = SR_DF_HEADER;
 624         packet.payload = &header;
 625         header.feed_version = 1;
 626         gettimeofday(&header.starttime, NULL);
 627         sr_session_send(cb_data, &packet);
 628
 629         /* Send metadata about the SR_DF_LOGIC packets to come. */
 630         packet.type = SR_DF_META_LOGIC;
 631         packet.payload = &meta;
 632         meta.samplerate = devc->cur_samplerate;
 633         meta.num_probes = devc->num_channels;
 634         sr_session_send(cb_data, &packet);
 635
 636         if (!(buf = g_try_malloc(PACKET_SIZE))) {
 637                 sr_err("zp: %s: buf malloc failed", __func__);
 638                 return SR_ERR_MALLOC;
 639         }
 640
 641         samples_read = 0;
 642         analyzer_read_start(devc->usb->devhdl);
 643         /* Send the incoming transfer to the session bus. */
 644         for (packet_num = 0; packet_num < (devc->memory_size * 4 / PACKET_SIZE);
 645              packet_num++) {
 646                 res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
 647                 sr_info("zp: Tried to read %llx bytes, actually read %x bytes",
 648                         PACKET_SIZE, res);
 649
 650                 packet.type = SR_DF_LOGIC;
 651                 packet.payload = &logic;
 652                 logic.length = PACKET_SIZE;
 653                 logic.unitsize = 4;
 654                 logic.data = buf;
 655                 sr_session_send(cb_data, &packet);
 656                 samples_read += res / 4;
 657         }
 658         analyzer_read_stop(devc->usb->devhdl);
 659         g_free(buf);
 660
 661         packet.type = SR_DF_END;
 662         sr_session_send(cb_data, &packet);
 663
 664         return SR_OK;
 665 }
 666
 667 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
 668 static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi,
 669                 void *cb_data)
 670 {
 671         struct sr_datafeed_packet packet;
 672         struct dev_context *devc;
 673
 674         packet.type = SR_DF_END;
 675         sr_session_send(cb_data, &packet);
 676
 677         if (!(devc = sdi->priv)) {
 678                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 679                 return SR_ERR_BUG;
 680         }
 681
 682         analyzer_reset(devc->usb->devhdl);
 683         /* TODO: Need to cancel and free any queued up transfers. */
 684
 685         return SR_OK;
 686 }
 687
 688 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
 689         .name = "zeroplus-logic-cube",
 690         .longname = "ZEROPLUS Logic Cube LAP-C series",
 691         .api_version = 1,
 692         .init = hw_init,
 693         .cleanup = hw_cleanup,
 694         .scan = hw_scan,
 695         .dev_list = hw_dev_list,
 696         .dev_clear = hw_cleanup,
 697         .dev_open = hw_dev_open,
 698         .dev_close = hw_dev_close,
 699         .info_get = hw_info_get,
 700         .dev_config_set = hw_dev_config_set,
 701         .dev_acquisition_start = hw_dev_acquisition_start,
 702         .dev_acquisition_stop = hw_dev_acquisition_stop,
 703         .priv = NULL,
 704 };