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