src/hardware/hung-chang-dso-2100/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2015 Daniel Glöckner <daniel-gl@gmx.net>
   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 <ieee1284.h>
  22 #include <string.h>
  23 #include "protocol.h"
  24
  25 SR_PRIV struct sr_dev_driver hung_chang_dso_2100_driver_info;
  26
  27 static const uint32_t scanopts[] = {
  28         SR_CONF_CONN,
  29 };
  30
  31 static const uint32_t drvopts[] = {
  32         SR_CONF_OSCILLOSCOPE,
  33 };
  34
  35 static const uint32_t devopts[] = {
  36         SR_CONF_CONN | SR_CONF_GET,
  37         SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET,
  38         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  39         SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  40         SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  41         SR_CONF_BUFFERSIZE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  42 };
  43
  44 static const uint32_t cgopts[] = {
  45         SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  46         SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  47         SR_CONF_PROBE_FACTOR | SR_CONF_GET | SR_CONF_SET,
  48 };
  49
  50 static const uint64_t samplerates[] = {
  51         SR_MHZ(100), SR_MHZ(50),  SR_MHZ(25),   SR_MHZ(20),
  52         SR_MHZ(10),  SR_MHZ(5),   SR_KHZ(2500), SR_MHZ(2),
  53         SR_MHZ(1),   SR_KHZ(500), SR_KHZ(250),  SR_KHZ(200),
  54         SR_KHZ(100), SR_KHZ(50),  SR_KHZ(25),   SR_KHZ(20),
  55         SR_KHZ(10),  SR_KHZ(5),   SR_HZ(2500),  SR_KHZ(2),
  56         SR_KHZ(1),   SR_HZ(500),  SR_HZ(250),   SR_HZ(200),
  57         SR_HZ(100),  SR_HZ(50),   SR_HZ(25),    SR_HZ(20)
  58 };
  59
  60 /* must be in sync with readout_steps[] in protocol.c */
  61 static const uint64_t buffersizes[] = {
  62         2 * 500, 3 * 500, 4 * 500, 5 * 500,
  63         6 * 500, 7 * 500, 8 * 500, 9 * 500, 10 * 500,
  64         12 * 500 - 2, 14 * 500 - 2, 16 * 500 - 2,
  65         18 * 500 - 2, 20 * 500 - 2, 10240 - 2
  66 };
  67
  68 static const uint64_t vdivs[][2] = {
  69         { 10, 1000 },
  70         { 20, 1000 },
  71         { 50, 1000 },
  72         { 100, 1000 },
  73         { 200, 1000 },
  74         { 500, 1000 },
  75         { 1, 1 },
  76         { 2, 1 },
  77         { 5, 1 },
  78 };
  79
  80 /* Bits 4 and 5 enable relays that add /10 filters to the chain
  81  * Bits 0 and 1 select an output from a resistor array */
  82 static const uint8_t vdivs_map[] = {
  83         0x01, 0x02, 0x03, 0x21, 0x22, 0x23, 0x31, 0x32, 0x33
  84 };
  85
  86
  87 static const char *trigger_sources[] = {
  88         "A", "B", "EXT"
  89 };
  90
  91 static const uint8_t trigger_sources_map[] = {
  92         0x00, 0x80, 0x40
  93 };
  94
  95 static const char *trigger_slopes[] = {
  96         "f", "r"
  97 };
  98
  99 static const char *coupling[] = {
 100         "DC", "AC", "GND"
 101 };
 102
 103 static const uint8_t coupling_map[] = {
 104         0x00, 0x08, 0x04
 105 };
 106
 107 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 108 {
 109         return std_init(di, sr_ctx, LOG_PREFIX);
 110 }
 111
 112 static GSList *scan_port(GSList *devices, struct sr_dev_driver *di,
 113                          struct parport *port)
 114 {
 115         struct sr_dev_inst *sdi;
 116         struct sr_channel *ch;
 117         struct sr_channel_group *cg;
 118         struct dev_context *devc;
 119         struct drv_context *drvc;
 120         int i;
 121
 122         if (ieee1284_open(port, 0, &i) != E1284_OK) {
 123                 sr_err("Can't open parallel port %s", port->name);
 124                 goto fail1;
 125         }
 126
 127         if ((i & (CAP1284_RAW | CAP1284_BYTE)) != (CAP1284_RAW | CAP1284_BYTE)) {
 128                 sr_err("Parallel port %s does not provide low-level bidirection access",
 129                        port->name);
 130                 goto fail2;
 131         }
 132
 133         if (ieee1284_claim(port) != E1284_OK) {
 134                 sr_err("Parallel port %s already in use", port->name);
 135                 goto fail2;
 136         }
 137
 138         if (!hung_chang_dso_2100_check_id(port))
 139                 goto fail3;
 140
 141         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 142         sdi->status = SR_ST_INACTIVE;
 143         sdi->vendor = g_strdup("Hung-Chang");
 144         sdi->model = g_strdup("DSO-2100");
 145         sdi->driver = di;
 146         drvc = di->context;
 147         sdi->inst_type = 0; /* FIXME */
 148         sdi->conn = port;
 149         ieee1284_ref(port);
 150
 151         for (i = 0; i < NUM_CHANNELS; i++) {
 152                 cg = g_malloc0(sizeof(struct sr_channel_group));
 153                 cg->name = g_strdup(trigger_sources[i]);
 154                 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, FALSE, trigger_sources[i]);
 155                 cg->channels = g_slist_append(cg->channels, ch);
 156                 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
 157         }
 158
 159         devc = g_malloc0(sizeof(struct dev_context));
 160         devc->enabled_channel = g_slist_append(NULL, NULL);
 161         devc->channel = 0;
 162         devc->rate = 0;
 163         devc->probe[0] = 10;
 164         devc->probe[1] = 10;
 165         devc->cctl[0] = 0x31; /* 1V/div, DC coupling, trigger on channel A*/
 166         devc->cctl[1] = 0x31; /* 1V/div, DC coupling, no tv sync trigger */
 167         devc->edge = 0;
 168         devc->tlevel = 0x80;
 169         devc->pos[0] = 0x80;
 170         devc->pos[1] = 0x80;
 171         devc->offset[0] = 0x80;
 172         devc->offset[1] = 0x80;
 173         devc->gain[0] = 0x80;
 174         devc->gain[1] = 0x80;
 175         devc->frame_limit = 0;
 176         devc->last_step = 0; /* buffersize = 1000 */
 177         sdi->priv = devc;
 178
 179         drvc->instances = g_slist_append(drvc->instances, sdi);
 180         devices = g_slist_append(devices, sdi);
 181
 182 fail3:
 183         ieee1284_release(port);
 184 fail2:
 185         ieee1284_close(port);
 186 fail1:
 187         return devices;
 188 }
 189
 190 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 191 {
 192         struct parport_list ports;
 193         struct sr_config *src;
 194         const char *conn = NULL;
 195         GSList *devices, *option;
 196         gboolean port_found;
 197         int i;
 198
 199
 200         for (option = options; option; option = option->next) {
 201                 src = option->data;
 202                 if (src->key == SR_CONF_CONN) {
 203                         conn = g_variant_get_string(src->data, NULL);
 204                         break;
 205                 }
 206         }
 207
 208         if (!conn)
 209                 return NULL;
 210
 211         if (ieee1284_find_ports(&ports, 0) != E1284_OK)
 212                 return NULL;
 213
 214         devices = NULL;
 215         port_found = FALSE;
 216         for (i = 0; i < ports.portc; i++)
 217                 if (!strcmp(ports.portv[i]->name, conn)) {
 218                         port_found = TRUE;
 219                         devices = scan_port(devices, di, ports.portv[i]);
 220                 }
 221
 222         if (!port_found) {
 223                 sr_err("Parallel port %s not found. Valid names are:", conn);
 224                 for (i = 0; i < ports.portc; i++)
 225                         sr_err("\t%s", ports.portv[i]->name);
 226         }
 227
 228         ieee1284_free_ports(&ports);
 229
 230         return devices;
 231 }
 232
 233 static void clear_private(void *priv)
 234 {
 235         struct dev_context *devc = priv;
 236
 237         g_slist_free(devc->enabled_channel);
 238 }
 239
 240 static int dev_clear(const struct sr_dev_driver *di)
 241 {
 242         struct drv_context *drvc = di->context;
 243         struct sr_dev_inst *sdi;
 244         GSList *l;
 245
 246         if (drvc) {
 247                 for (l = drvc->instances; l; l = l->next) {
 248                         sdi = l->data;
 249                         ieee1284_unref(sdi->conn);
 250                 }
 251         }
 252
 253         return std_dev_clear(di, clear_private);
 254 }
 255
 256 static int dev_open(struct sr_dev_inst *sdi)
 257 {
 258         struct dev_context *devc = sdi->priv;
 259         int i;
 260
 261         if (sdi->status != SR_ST_INACTIVE)
 262                 goto fail1;
 263
 264         if (ieee1284_open(sdi->conn, 0, &i) != E1284_OK)
 265                 goto fail1;
 266
 267         if (ieee1284_claim(sdi->conn) != E1284_OK)
 268                 goto fail2;
 269
 270         if (ieee1284_data_dir(sdi->conn, 1) != E1284_OK)
 271                 goto fail3;
 272
 273         if (hung_chang_dso_2100_move_to(sdi, 1))
 274                 goto fail3;
 275
 276         devc->samples = g_try_malloc(1000 * sizeof(*devc->samples));
 277         if (!devc->samples)
 278                 goto fail3;
 279
 280         sdi->status = SR_ST_ACTIVE;
 281
 282         return SR_OK;
 283
 284 fail3:
 285         hung_chang_dso_2100_reset_port(sdi->conn);
 286         ieee1284_release(sdi->conn);
 287 fail2:
 288         ieee1284_close(sdi->conn);
 289 fail1:
 290         return SR_ERR;
 291 }
 292
 293 static int dev_close(struct sr_dev_inst *sdi)
 294 {
 295         struct dev_context *devc = sdi->priv;
 296
 297         if (sdi->status != SR_ST_ACTIVE)
 298                 return SR_OK;
 299
 300         g_free(devc->samples);
 301         hung_chang_dso_2100_reset_port(sdi->conn);
 302         ieee1284_release(sdi->conn);
 303         ieee1284_close(sdi->conn);
 304         sdi->status = SR_ST_INACTIVE;
 305
 306         return SR_OK;
 307 }
 308
 309 static int find_in_array(GVariant *data, const GVariantType *type,
 310                          const void *arr, int n)
 311 {
 312         const char * const *sarr;
 313         const char *s;
 314         const uint64_t *u64arr;
 315         const uint8_t *u8arr;
 316         uint64_t u64;
 317         uint8_t u8;
 318         int i;
 319
 320         if (!g_variant_is_of_type(data, type))
 321                 return -1;
 322
 323         switch (g_variant_classify(data)) {
 324         case G_VARIANT_CLASS_STRING:
 325                 s = g_variant_get_string(data, NULL);
 326                 sarr = arr;
 327
 328                 for (i = 0; i < n; i++)
 329                         if (!strcmp(s, sarr[i]))
 330                                 return i;
 331                 break;
 332         case G_VARIANT_CLASS_UINT64:
 333                 u64 = g_variant_get_uint64(data);
 334                 u64arr = arr;
 335
 336                 for (i = 0; i < n; i++)
 337                         if (u64 == u64arr[i])
 338                                 return i;
 339                 break;
 340         case G_VARIANT_CLASS_BYTE:
 341                 u8 = g_variant_get_byte(data);
 342                 u8arr = arr;
 343
 344                 for (i = 0; i < n; i++)
 345                         if (u8 == u8arr[i])
 346                                 return i;
 347         default:
 348                 break;
 349         }
 350
 351         return -1;
 352 }
 353
 354 static int reverse_map(uint8_t u, const uint8_t *arr, int n)
 355 {
 356         GVariant *v = g_variant_new_byte(u);
 357         int i = find_in_array(v, G_VARIANT_TYPE_BYTE, arr, n);
 358         g_variant_unref(v);
 359         return i;
 360 }
 361
 362 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 363                 const struct sr_channel_group *cg)
 364 {
 365         struct dev_context *devc = sdi->priv;
 366         struct parport *port;
 367         int ret, i, ch = -1;
 368
 369         if (cg) /* sr_config_get will validate cg using config_list */
 370                 ch = ((struct sr_channel *)cg->channels->data)->index;
 371
 372         ret = SR_OK;
 373         switch (key) {
 374         case SR_CONF_CONN:
 375                 port = sdi->conn;
 376                 *data = g_variant_new_string(port->name);
 377                 break;
 378         case SR_CONF_LIMIT_FRAMES:
 379                 *data = g_variant_new_uint64(devc->frame_limit);
 380                 break;
 381         case SR_CONF_SAMPLERATE:
 382                 *data = g_variant_new_uint64(samplerates[devc->rate]);
 383                 break;
 384         case SR_CONF_TRIGGER_SOURCE:
 385                 i = reverse_map(devc->cctl[0] & 0xC0, trigger_sources_map,
 386                                 ARRAY_SIZE(trigger_sources_map));
 387                 if (i == -1)
 388                         ret = SR_ERR;
 389                 else
 390                         *data = g_variant_new_string(trigger_sources[i]);
 391                 break;
 392         case SR_CONF_TRIGGER_SLOPE:
 393                 if (devc->edge >= ARRAY_SIZE(trigger_slopes))
 394                         ret = SR_ERR;
 395                 else
 396                         *data = g_variant_new_string(trigger_slopes[devc->edge]);
 397                 break;
 398         case SR_CONF_BUFFERSIZE:
 399                 *data = g_variant_new_uint64(buffersizes[devc->last_step]);
 400                 break;
 401         case SR_CONF_VDIV:
 402                 if (ch == -1) {
 403                         ret = SR_ERR_CHANNEL_GROUP;
 404                 } else {
 405                         i = reverse_map(devc->cctl[ch] & 0x33, vdivs_map,
 406                                         ARRAY_SIZE(vdivs_map));
 407                         if (i == -1)
 408                                 ret = SR_ERR;
 409                         else
 410                                 *data = g_variant_new("(tt)", vdivs[i][0],
 411                                                       vdivs[i][1]);
 412                 }
 413                 break;
 414         case SR_CONF_COUPLING:
 415                 if (ch == -1) {
 416                         ret = SR_ERR_CHANNEL_GROUP;
 417                 } else {
 418                         i = reverse_map(devc->cctl[ch] & 0x0C, coupling_map,
 419                                         ARRAY_SIZE(coupling_map));
 420                         if (i == -1)
 421                                 ret = SR_ERR;
 422                         else
 423                                 *data = g_variant_new_string(coupling[i]);
 424                 }
 425                 break;
 426         case SR_CONF_PROBE_FACTOR:
 427                 if (ch == -1)
 428                         ret = SR_ERR_CHANNEL_GROUP;
 429                 else
 430                         *data = g_variant_new_uint64(devc->probe[ch]);
 431                 break;
 432         default:
 433                 ret = SR_ERR_NA;
 434         }
 435
 436         return ret;
 437 }
 438
 439 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 440                 const struct sr_channel_group *cg)
 441 {
 442         struct dev_context *devc = sdi->priv;
 443         int ret, i, ch = -1;
 444         uint64_t u, v;
 445
 446         if (cg) /* sr_config_set will validate cg using config_list */
 447                 ch = ((struct sr_channel *)cg->channels->data)->index;
 448
 449         if (sdi->status != SR_ST_ACTIVE)
 450                 return SR_ERR_DEV_CLOSED;
 451
 452         ret = SR_OK;
 453         switch (key) {
 454         case SR_CONF_LIMIT_FRAMES:
 455                 devc->frame_limit = g_variant_get_uint64(data);
 456                 break;
 457         case SR_CONF_SAMPLERATE:
 458                 i = find_in_array(data, G_VARIANT_TYPE_UINT64,
 459                                   samplerates, ARRAY_SIZE(samplerates));
 460                 if (i == -1)
 461                         ret = SR_ERR_ARG;
 462                 else
 463                         devc->rate = i;
 464                 break;
 465         case SR_CONF_TRIGGER_SOURCE:
 466                 i = find_in_array(data, G_VARIANT_TYPE_STRING,
 467                                   trigger_sources, ARRAY_SIZE(trigger_sources));
 468                 if (i == -1)
 469                         ret = SR_ERR_ARG;
 470                 else
 471                         devc->cctl[0] = (devc->cctl[0] & 0x3F)
 472                                       | trigger_sources_map[i];
 473                 break;
 474         case SR_CONF_TRIGGER_SLOPE:
 475                 i = find_in_array(data, G_VARIANT_TYPE_STRING,
 476                                   trigger_slopes, ARRAY_SIZE(trigger_slopes));
 477                 if (i == -1)
 478                         ret = SR_ERR_ARG;
 479                 else
 480                         devc->edge = i;
 481                 break;
 482         case SR_CONF_BUFFERSIZE:
 483                 i = find_in_array(data, G_VARIANT_TYPE_UINT64,
 484                                   buffersizes, ARRAY_SIZE(buffersizes));
 485                 if (i == -1)
 486                         ret = SR_ERR_ARG;
 487                 else
 488                         devc->last_step = i;
 489                 break;
 490         case SR_CONF_VDIV:
 491                 if (ch == -1) {
 492                         ret = SR_ERR_CHANNEL_GROUP;
 493                 } else if (!g_variant_is_of_type(data, G_VARIANT_TYPE("(tt)"))) {
 494                         ret = SR_ERR_ARG;
 495                 } else {
 496                         g_variant_get(data, "(tt)", &u, &v);
 497                         for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++)
 498                                 if (vdivs[i][0] == u && vdivs[i][1] == v)
 499                                         break;
 500                         if (i == ARRAY_SIZE(vdivs))
 501                                 ret = SR_ERR_ARG;
 502                         else
 503                                 devc->cctl[ch] = (devc->cctl[ch] & 0xCC)
 504                                                | vdivs_map[i];
 505                 }
 506                 break;
 507         case SR_CONF_COUPLING:
 508                 if (ch == -1) {
 509                         ret = SR_ERR_CHANNEL_GROUP;
 510                 } else {
 511                         i = find_in_array(data, G_VARIANT_TYPE_STRING,
 512                                           coupling, ARRAY_SIZE(coupling));
 513                         if (i == -1)
 514                                 ret = SR_ERR_ARG;
 515                         else
 516                                 devc->cctl[ch] = (devc->cctl[ch] & 0xF3)
 517                                                | coupling_map[i];
 518                 }
 519                 break;
 520         case SR_CONF_PROBE_FACTOR:
 521                 if (ch == -1) {
 522                         ret = SR_ERR_CHANNEL_GROUP;
 523                 } else {
 524                         u = g_variant_get_uint64(data);
 525                         if (!u)
 526                                 ret = SR_ERR_ARG;
 527                         else
 528                                 devc->probe[ch] = u;
 529                 }
 530                 break;
 531         default:
 532                 ret = SR_ERR_NA;
 533         }
 534
 535         return ret;
 536 }
 537
 538 static int config_channel_set(const struct sr_dev_inst *sdi,
 539                               struct sr_channel *ch,
 540                               unsigned int changes)
 541 {
 542         struct dev_context *devc = sdi->priv;
 543         uint8_t v;
 544
 545         if (changes & SR_CHANNEL_SET_ENABLED) {
 546                 if (ch->enabled) {
 547                         v = devc->channel | (1 << ch->index);
 548                         if (v & (v - 1))
 549                                 return SR_ERR;
 550                         devc->channel = v;
 551                         devc->enabled_channel->data = ch;
 552                 } else {
 553                         devc->channel &= ~(1 << ch->index);
 554                 }
 555         }
 556         return SR_OK;
 557 }
 558
 559 static int config_commit(const struct sr_dev_inst *sdi)
 560 {
 561         uint8_t state = hung_chang_dso_2100_read_mbox(sdi->conn, 0.02);
 562         int ret;
 563
 564         if (sdi->status != SR_ST_ACTIVE)
 565                 return SR_ERR_DEV_CLOSED;
 566
 567         switch (state) {
 568         case 0x03:
 569         case 0x14:
 570         case 0x21:
 571                 /* we will travel the complete config path on our way to state 1 */
 572                 break;
 573         case 0x00:
 574                 state = 0x01;
 575         default:
 576                 ret = hung_chang_dso_2100_move_to(sdi, 1);
 577                 if (ret != SR_OK)
 578                         return ret;
 579         case 0x01:
 580                 hung_chang_dso_2100_write_mbox(sdi->conn, 4);
 581         }
 582         ret = hung_chang_dso_2100_move_to(sdi, 1);
 583         if (ret != SR_OK)
 584                 return ret;
 585         return hung_chang_dso_2100_move_to(sdi, state);
 586 }
 587
 588 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 589                 const struct sr_channel_group *cg)
 590 {
 591         GVariantBuilder gvb;
 592         GVariant *gvar, *rational[2];
 593         GSList *l;
 594         int i;
 595
 596         switch (key) {
 597                 case SR_CONF_SCAN_OPTIONS:
 598         case SR_CONF_DEVICE_OPTIONS:
 599                 break;
 600         case SR_CONF_SAMPLERATE:
 601         case SR_CONF_TRIGGER_SOURCE:
 602         case SR_CONF_TRIGGER_SLOPE:
 603         case SR_CONF_BUFFERSIZE:
 604                 if (!sdi || cg)
 605                         return SR_ERR_NA;
 606                 break;
 607         case SR_CONF_VDIV:
 608         case SR_CONF_COUPLING:
 609                 if (!sdi)
 610                         return SR_ERR_NA;
 611                 if (!cg)
 612                         return SR_ERR_CHANNEL_GROUP;
 613                 l = g_slist_find(sdi->channel_groups, cg);
 614                 if (!l)
 615                         return SR_ERR_ARG;
 616                 break;
 617         default:
 618                 return SR_ERR_NA;
 619         }
 620
 621         switch (key) {
 622         case SR_CONF_SCAN_OPTIONS:
 623                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 624                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 625                 break;
 626         case SR_CONF_DEVICE_OPTIONS:
 627                 if (!sdi)
 628                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 629                                         drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 630                 else if (!cg)
 631                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 632                                         devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 633                 else
 634                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 635                                         cgopts, ARRAY_SIZE(cgopts), sizeof(uint32_t));
 636                 break;
 637         case SR_CONF_SAMPLERATE:
 638                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 639                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
 640                                 samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
 641                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 642                 *data = g_variant_builder_end(&gvb);
 643                 break;
 644         case SR_CONF_TRIGGER_SOURCE:
 645                 *data = g_variant_new_strv(trigger_sources, ARRAY_SIZE(trigger_sources));
 646                 break;
 647         case SR_CONF_TRIGGER_SLOPE:
 648                 *data = g_variant_new_strv(trigger_slopes, ARRAY_SIZE(trigger_slopes));
 649                 break;
 650         case SR_CONF_BUFFERSIZE:
 651                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
 652                                 buffersizes, ARRAY_SIZE(buffersizes), sizeof(uint64_t));
 653                 break;
 654         case SR_CONF_VDIV:
 655                 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 656                 for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++) {
 657                         rational[0] = g_variant_new_uint64(vdivs[i][0]);
 658                         rational[1] = g_variant_new_uint64(vdivs[i][1]);
 659                         gvar = g_variant_new_tuple(rational, 2);
 660                         g_variant_builder_add_value(&gvb, gvar);
 661                 }
 662                 *data = g_variant_builder_end(&gvb);
 663                 break;
 664         case SR_CONF_COUPLING:
 665                 *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
 666                 break;
 667         }
 668
 669         return SR_OK;
 670 }
 671
 672 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 673 {
 674         struct dev_context *devc = sdi->priv;
 675         int ret;
 676
 677         if (sdi->status != SR_ST_ACTIVE)
 678                 return SR_ERR_DEV_CLOSED;
 679
 680         if (devc->channel) {
 681                 static const float res_array[] = {0.5, 1, 2, 5};
 682                 static const uint8_t relays[] = {100, 10, 10, 1};
 683                 devc->factor = devc->probe[devc->channel - 1] / 32.0;
 684                 devc->factor *= res_array[devc->cctl[devc->channel - 1] & 0x03];
 685                 devc->factor /= relays[(devc->cctl[devc->channel - 1] >> 4) & 0x03];
 686         }
 687         devc->frame = 0;
 688         devc->state_known = TRUE;
 689         devc->step = 0;
 690         devc->adc2 = FALSE;
 691         devc->retries = MAX_RETRIES;
 692
 693         ret = hung_chang_dso_2100_move_to(sdi, 0x21);
 694         if (ret != SR_OK)
 695                 return ret;
 696
 697         std_session_send_df_header(sdi, LOG_PREFIX);
 698
 699         sr_session_source_add(sdi->session, -1, 0, 8,
 700                               hung_chang_dso_2100_poll, (void *)sdi);
 701
 702         return SR_OK;
 703 }
 704
 705 SR_PRIV int hung_chang_dso_2100_dev_acquisition_stop(const struct sr_dev_inst *sdi)
 706 {
 707         if (sdi->status != SR_ST_ACTIVE)
 708                 return SR_ERR_DEV_CLOSED;
 709
 710         std_session_send_df_end(sdi, LOG_PREFIX);
 711         sr_session_source_remove(sdi->session, -1);
 712         hung_chang_dso_2100_move_to(sdi, 1);
 713
 714         return SR_OK;
 715 }
 716
 717 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 718 {
 719         return hung_chang_dso_2100_dev_acquisition_stop(sdi);
 720 }
 721
 722 SR_PRIV struct sr_dev_driver hung_chang_dso_2100_driver_info = {
 723         .name = "hung-chang-dso-2100",
 724         .longname = "Hung-Chang DSO-2100",
 725         .api_version = 1,
 726         .init = init,
 727         .cleanup = std_cleanup,
 728         .scan = scan,
 729         .dev_list = std_dev_list,
 730         .dev_clear = dev_clear,
 731         .config_get = config_get,
 732         .config_set = config_set,
 733         .config_channel_set = config_channel_set,
 734         .config_commit = config_commit,
 735         .config_list = config_list,
 736         .dev_open = dev_open,
 737         .dev_close = dev_close,
 738         .dev_acquisition_start = dev_acquisition_start,
 739         .dev_acquisition_stop = dev_acquisition_stop,
 740         .context = NULL,
 741 };