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kingst-la2016: complete hardware setup in probe, set features in open
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1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2020 Florian Schmidt <schmidt_florian@gmx.de>
5 * Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se>
6 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
7 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23/*
24 * This driver implementation initially was derived from the
25 * src/hardware/saleae-logic16/ source code.
26 */
27
28#include <config.h>
29
30#include <libsigrok/libsigrok.h>
31#include <string.h>
32
33#include "libsigrok-internal.h"
34#include "protocol.h"
35
36static const uint32_t scanopts[] = {
37 SR_CONF_CONN,
38};
39
40static const uint32_t drvopts[] = {
41 SR_CONF_LOGIC_ANALYZER,
42};
43
44static const uint32_t devopts[] = {
45 /* TODO: SR_CONF_CONTINUOUS, */
46 SR_CONF_CONN | SR_CONF_GET,
47 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
48 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
49 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
50 SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
51 SR_CONF_LOGIC_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
52 SR_CONF_LOGIC_THRESHOLD_CUSTOM | SR_CONF_GET | SR_CONF_SET,
53 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
54 SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
55};
56
57static const int32_t trigger_matches[] = {
58 SR_TRIGGER_ZERO,
59 SR_TRIGGER_ONE,
60 SR_TRIGGER_RISING,
61 SR_TRIGGER_FALLING,
62};
63
64static const char *channel_names_logic[] = {
65 "CH0", "CH1", "CH2", "CH3", "CH4", "CH5", "CH6", "CH7",
66 "CH8", "CH9", "CH10", "CH11", "CH12", "CH13", "CH14", "CH15",
67 "CH16", "CH17", "CH18", "CH19", "CH20", "CH21", "CH22", "CH23",
68 "CH24", "CH25", "CH26", "CH27", "CH28", "CH29", "CH30", "CH31",
69};
70
71/*
72 * The hardware uses a 100/200/500MHz base clock (model dependent) and
73 * a 16bit divider (common across all models). The range from 10kHz to
74 * 100/200/500MHz should be applicable to all devices. High rates may
75 * suffer from coarse resolution (e.g. in the "500MHz div 2" case) and
76 * may not provide the desired 1/2/5 steps. Fortunately this exclusively
77 * affects the 500MHz model where 250MHz is used instead of 200MHz and
78 * the 166MHz and 125MHz rates are not presented to users. Deep memory
79 * of these models and hardware compression reduce the necessity to let
80 * users pick from a huge list of possible rates.
81 *
82 */
83
84static const uint64_t rates_500mhz[] = {
85 SR_KHZ(10),
86 SR_KHZ(20),
87 SR_KHZ(50),
88 SR_KHZ(100),
89 SR_KHZ(200),
90 SR_KHZ(500),
91 SR_MHZ(1),
92 SR_MHZ(2),
93 SR_MHZ(5),
94 SR_MHZ(10),
95 SR_MHZ(20),
96 SR_MHZ(50),
97 SR_MHZ(100),
98 SR_MHZ(250),
99 SR_MHZ(500),
100};
101
102static const uint64_t rates_200mhz[] = {
103 SR_KHZ(10),
104 SR_KHZ(20),
105 SR_KHZ(50),
106 SR_KHZ(100),
107 SR_KHZ(200),
108 SR_KHZ(500),
109 SR_MHZ(1),
110 SR_MHZ(2),
111 SR_MHZ(5),
112 SR_MHZ(10),
113 SR_MHZ(20),
114 SR_MHZ(50),
115 SR_MHZ(100),
116 SR_MHZ(200),
117};
118
119static const uint64_t rates_100mhz[] = {
120 SR_KHZ(10),
121 SR_KHZ(20),
122 SR_KHZ(50),
123 SR_KHZ(100),
124 SR_KHZ(200),
125 SR_KHZ(500),
126 SR_MHZ(1),
127 SR_MHZ(2),
128 SR_MHZ(5),
129 SR_MHZ(10),
130 SR_MHZ(20),
131 SR_MHZ(50),
132 SR_MHZ(100),
133};
134
135static const float logic_threshold_value[] = {
136 1.58,
137 2.5,
138 1.165,
139 1.5,
140 1.25,
141 0.9,
142 0.75,
143 0.60,
144 0.45,
145};
146
147static const char *logic_threshold[] = {
148 "TTL 5V",
149 "CMOS 5V",
150 "CMOS 3.3V",
151 "CMOS 3.0V",
152 "CMOS 2.5V",
153 "CMOS 1.8V",
154 "CMOS 1.5V",
155 "CMOS 1.2V",
156 "CMOS 0.9V",
157 "USER",
158};
159
160#define LOGIC_THRESHOLD_IDX_USER (ARRAY_SIZE(logic_threshold) - 1)
161
162/* Convenience. Release an allocated devc from error paths. */
163static void kingst_la2016_free_devc(struct dev_context *devc)
164{
165 if (!devc)
166 return;
167 g_free(devc->mcu_firmware);
168 g_free(devc->fpga_bitstream);
169 g_free(devc);
170}
171
172/* Convenience. Release an allocated sdi from error paths. */
173static void kingst_la2016_free_sdi(struct sr_dev_inst *sdi)
174{
175 if (!sdi)
176 return;
177 g_free(sdi->vendor);
178 g_free(sdi->model);
179 g_free(sdi->version);
180 g_free(sdi->serial_num);
181 g_free(sdi->connection_id);
182 sr_usb_dev_inst_free(sdi->conn);
183 kingst_la2016_free_devc(sdi->priv);
184}
185
186/* Convenience. Open a USB device (including claiming an interface). */
187static int la2016_open_usb(struct sr_usb_dev_inst *usb,
188 libusb_device *dev, gboolean show_message)
189{
190 int ret;
191
192 ret = libusb_open(dev, &usb->devhdl);
193 if (ret != 0) {
194 if (show_message) {
195 sr_err("Cannot open device: %s.",
196 libusb_error_name(ret));
197 }
198 return SR_ERR_IO;
199 }
200
201 if (usb->address == 0xff) {
202 /*
203 * First encounter after firmware upload.
204 * Grab current address after enumeration.
205 */
206 usb->address = libusb_get_device_address(dev);
207 }
208
209 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
210 if (ret == LIBUSB_ERROR_BUSY) {
211 sr_err("Cannot claim USB interface. Another program or driver using it?");
212 return SR_ERR_IO;
213 } else if (ret == LIBUSB_ERROR_NO_DEVICE) {
214 sr_err("Device has been disconnected.");
215 return SR_ERR_IO;
216 } else if (ret != 0) {
217 sr_err("Cannot claim USB interface: %s.",
218 libusb_error_name(ret));
219 return SR_ERR_IO;
220 }
221
222 return SR_OK;
223}
224
225/* Convenience. Close an opened USB device (and release the interface). */
226static void la2016_close_usb(struct sr_usb_dev_inst *usb)
227{
228
229 if (!usb)
230 return;
231
232 if (usb->devhdl) {
233 libusb_release_interface(usb->devhdl, USB_INTERFACE);
234 libusb_close(usb->devhdl);
235 usb->devhdl = NULL;
236 }
237}
238
239/* Communicate to an USB device to identify the Kingst LA model. */
240static int la2016_identify_read(struct sr_dev_inst *sdi,
241 struct sr_usb_dev_inst *usb, libusb_device *dev,
242 gboolean show_message)
243{
244 int ret;
245
246 ret = la2016_open_usb(usb, dev, show_message);
247 if (ret != SR_OK) {
248 if (show_message)
249 sr_err("Cannot communicate to MCU firmware.");
250 return ret;
251 }
252
253 /*
254 * Also complete the hardware configuration (FPGA bitstream)
255 * when MCU firmware communication became operational. Either
256 * failure is considered fatal when probing for the device.
257 */
258 ret = la2016_identify_device(sdi, show_message);
259 if (ret == SR_OK) {
260 ret = la2016_init_hardware(sdi);
261 }
262
263 la2016_close_usb(usb);
264
265 return ret;
266}
267
268/* Find given conn_id in another USB enum. Identify Kingst LA model. */
269static int la2016_identify_enum(struct sr_dev_inst *sdi)
270{
271 struct sr_dev_driver *di;
272 struct drv_context *drvc;
273 struct sr_context *ctx;
274 libusb_device **devlist, *dev;
275 struct libusb_device_descriptor des;
276 int ret, id_ret;
277 size_t device_count, dev_idx;
278 char conn_id[64];
279
280 di = sdi->driver;
281 drvc = di->context;
282 ctx = drvc->sr_ctx;;
283
284 ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
285 if (ret < 0)
286 return SR_ERR_IO;
287 device_count = ret;
288 if (!device_count)
289 return SR_ERR_IO;
290 id_ret = SR_ERR_IO;
291 for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
292 dev = devlist[dev_idx];
293 libusb_get_device_descriptor(dev, &des);
294 if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
295 continue;
296 if (des.iProduct != LA2016_IPRODUCT_INDEX)
297 continue;
298 ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
299 if (ret < 0)
300 continue;
301 if (strcmp(sdi->connection_id, conn_id) != 0)
302 continue;
303 id_ret = la2016_identify_read(sdi, sdi->conn, dev, FALSE);
304 break;
305 }
306 libusb_free_device_list(devlist, 1);
307
308 return id_ret;
309}
310
311/* Wait for a device to re-appear after firmware upload. */
312static int la2016_identify_wait(struct sr_dev_inst *sdi)
313{
314 struct dev_context *devc;
315 uint64_t reset_done, now, elapsed_ms;
316 int ret;
317
318 devc = sdi->priv;
319
320 sr_info("Waiting for device to reset after firmware upload.");
321 now = g_get_monotonic_time();
322 reset_done = devc->fw_uploaded + RENUM_GONE_DELAY_MS * 1000;
323 if (now < reset_done)
324 g_usleep(reset_done - now);
325 do {
326 now = g_get_monotonic_time();
327 elapsed_ms = (now - devc->fw_uploaded) / 1000;
328 sr_spew("Waited %" PRIu64 "ms.", elapsed_ms);
329 ret = la2016_identify_enum(sdi);
330 if (ret == SR_OK) {
331 devc->fw_uploaded = 0;
332 break;
333 }
334 g_usleep(RENUM_POLL_INTERVAL_MS * 1000);
335 } while (elapsed_ms < RENUM_CHECK_PERIOD_MS);
336 if (ret != SR_OK) {
337 sr_err("Device failed to re-enumerate.");
338 return ret;
339 }
340 sr_info("Device came back after %" PRIi64 "ms.", elapsed_ms);
341
342 return SR_OK;
343}
344
345/*
346 * Open given conn_id from another USB enum. Used by dev_open(). Similar
347 * to, and should be kept in sync with la2016_identify_enum().
348 */
349static int la2016_open_enum(struct sr_dev_inst *sdi)
350{
351 struct sr_dev_driver *di;
352 struct drv_context *drvc;
353 struct sr_context *ctx;
354 libusb_device **devlist, *dev;
355 struct libusb_device_descriptor des;
356 int ret, open_ret;
357 size_t device_count, dev_idx;
358 char conn_id[64];
359
360 di = sdi->driver;
361 drvc = di->context;
362 ctx = drvc->sr_ctx;;
363
364 ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
365 if (ret < 0)
366 return SR_ERR_IO;
367 device_count = ret;
368 if (!device_count)
369 return SR_ERR_IO;
370 open_ret = SR_ERR_IO;
371 for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
372 dev = devlist[dev_idx];
373 libusb_get_device_descriptor(dev, &des);
374 if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
375 continue;
376 if (des.iProduct != LA2016_IPRODUCT_INDEX)
377 continue;
378 ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
379 if (ret < 0)
380 continue;
381 if (strcmp(sdi->connection_id, conn_id) != 0)
382 continue;
383 open_ret = la2016_open_usb(sdi->conn, dev, TRUE);
384 break;
385 }
386 libusb_free_device_list(devlist, 1);
387
388 return open_ret;
389}
390
391static GSList *scan(struct sr_dev_driver *di, GSList *options)
392{
393 struct drv_context *drvc;
394 struct sr_context *ctx;
395 struct dev_context *devc;
396 struct sr_dev_inst *sdi;
397 struct sr_usb_dev_inst *usb;
398 struct sr_config *src;
399 GSList *l;
400 GSList *devices, *found_devices, *renum_devices;
401 GSList *conn_devices;
402 struct libusb_device_descriptor des;
403 libusb_device **devlist, *dev;
404 size_t dev_count, dev_idx, ch_idx;
405 uint8_t bus, addr;
406 uint16_t pid;
407 const char *conn;
408 char conn_id[64];
409 int ret;
410 size_t ch_off, ch_max;
411
412 drvc = di->context;
413 ctx = drvc->sr_ctx;;
414
415 conn = NULL;
416 conn_devices = NULL;
417 for (l = options; l; l = l->next) {
418 src = l->data;
419 switch (src->key) {
420 case SR_CONF_CONN:
421 conn = g_variant_get_string(src->data, NULL);
422 break;
423 }
424 }
425 if (conn)
426 conn_devices = sr_usb_find(ctx->libusb_ctx, conn);
427 if (conn && !conn_devices) {
428 sr_err("Cannot find the specified connection '%s'.", conn);
429 return NULL;
430 }
431
432 /*
433 * Find all LA2016 devices, optionally upload firmware to them.
434 * Defer completion of sdi/devc creation until all (selected)
435 * devices were found in a usable state, and their models got
436 * identified which affect their feature set. It appears that
437 * we cannot communicate to the device within the same USB enum
438 * cycle, needs another USB enumeration after firmware upload.
439 */
440 devices = NULL;
441 found_devices = NULL;
442 renum_devices = NULL;
443 ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
444 if (ret < 0) {
445 sr_err("Cannot get device list: %s.", libusb_error_name(ret));
446 return devices;
447 }
448 dev_count = ret;
449 for (dev_idx = 0; dev_idx < dev_count; dev_idx++) {
450 dev = devlist[dev_idx];
451 bus = libusb_get_bus_number(dev);
452 addr = libusb_get_device_address(dev);
453
454 /* Filter by connection when externally specified. */
455 for (l = conn_devices; l; l = l->next) {
456 usb = l->data;
457 if (usb->bus == bus && usb->address == addr)
458 break;
459 }
460 if (conn_devices && !l) {
461 sr_spew("Bus %hhu, addr %hhu do not match specified filter.",
462 bus, addr);
463 continue;
464 }
465
466 /* Check USB VID:PID. Get the connection string. */
467 libusb_get_device_descriptor(dev, &des);
468 if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
469 continue;
470 pid = des.idProduct;
471 ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
472 if (ret < 0)
473 continue;
474 sr_dbg("USB enum found %04x:%04x at path %s, %d.%d.",
475 des.idVendor, des.idProduct, conn_id, bus, addr);
476 usb = sr_usb_dev_inst_new(bus, addr, NULL);
477
478 sdi = g_malloc0(sizeof(*sdi));
479 sdi->driver = di;
480 sdi->status = SR_ST_INITIALIZING;
481 sdi->inst_type = SR_INST_USB;
482 sdi->connection_id = g_strdup(conn_id);
483 sdi->conn = usb;
484
485 devc = g_malloc0(sizeof(*devc));
486 sdi->priv = devc;
487
488 /*
489 * Load MCU firmware if it is currently missing. Which
490 * makes the device disappear and renumerate in USB.
491 * We need to come back another time to communicate to
492 * this device.
493 */
494 devc->fw_uploaded = 0;
495 if (des.iProduct != LA2016_IPRODUCT_INDEX) {
496 sr_info("Uploading MCU firmware to '%s'.", conn_id);
497 ret = la2016_upload_firmware(sdi, ctx, dev, pid);
498 if (ret != SR_OK) {
499 sr_err("MCU firmware upload failed.");
500 kingst_la2016_free_sdi(sdi);
501 continue;
502 }
503 devc->fw_uploaded = g_get_monotonic_time();
504 usb->address = 0xff;
505 renum_devices = g_slist_append(renum_devices, sdi);
506 continue;
507 }
508
509 /*
510 * Communicate to the MCU firmware to access EEPROM data
511 * which lets us identify the device type. Then stop, to
512 * share remaining sdi/devc creation with those devices
513 * which had their MCU firmware uploaded above and which
514 * get revisited later.
515 */
516 ret = la2016_identify_read(sdi, usb, dev, TRUE);
517 if (ret != SR_OK || !devc->model) {
518 sr_err("Unknown or unsupported device type.");
519 kingst_la2016_free_sdi(sdi);
520 continue;
521 }
522 found_devices = g_slist_append(found_devices, sdi);
523 }
524 libusb_free_device_list(devlist, 1);
525 g_slist_free_full(conn_devices, sr_usb_dev_inst_free_cb);
526
527 /*
528 * Wait for devices to re-appear after firmware upload. Append
529 * the yet unidentified device to the list of found devices, or
530 * release the previously allocated sdi/devc.
531 */
532 for (l = renum_devices; l; l = l->next) {
533 sdi = l->data;
534 devc = sdi->priv;
535 ret = la2016_identify_wait(sdi);
536 if (ret != SR_OK || !devc->model) {
537 sr_dbg("Skipping unusable '%s'.", sdi->connection_id);
538 kingst_la2016_free_sdi(sdi);
539 continue;
540 }
541 found_devices = g_slist_append(found_devices, sdi);
542 }
543 g_slist_free(renum_devices);
544
545 /*
546 * All found devices got identified, their type is known here.
547 * Complete the sdi/devc creation. Assign default settings
548 * because the vendor firmware would not let us read back the
549 * previously written configuration.
550 */
551 for (l = found_devices; l; l = l->next) {
552 sdi = l->data;
553 devc = sdi->priv;
554
555 sdi->vendor = g_strdup("Kingst");
556 sdi->model = g_strdup(devc->model->name);
557 ch_off = 0;
558
559 /* Create the logic channels. */
560 ch_max = ARRAY_SIZE(channel_names_logic);
561 if (ch_max > devc->model->channel_count)
562 ch_max = devc->model->channel_count;
563 for (ch_idx = 0; ch_idx < ch_max; ch_idx++) {
564 sr_channel_new(sdi, ch_off,
565 SR_CHANNEL_LOGIC, TRUE,
566 channel_names_logic[ch_idx]);
567 ch_off++;
568 }
569
570 sr_sw_limits_init(&devc->sw_limits);
571 devc->sw_limits.limit_samples = 0;
572 devc->capture_ratio = 50;
573 devc->cur_samplerate = devc->model->samplerate;
574 devc->threshold_voltage_idx = 0;
575 devc->threshold_voltage = logic_threshold_value[devc->threshold_voltage_idx];
576
577 sdi->status = SR_ST_INACTIVE;
578 devices = g_slist_append(devices, sdi);
579 }
580 g_slist_free(found_devices);
581
582 return std_scan_complete(di, devices);
583}
584
585static int dev_open(struct sr_dev_inst *sdi)
586{
587 int ret;
588
589 ret = la2016_open_enum(sdi);
590 if (ret != SR_OK) {
591 sr_err("Cannot open device.");
592 return ret;
593 }
594
595 /*
596 * Setup a default configuration of device features. This
597 * affects the logic threshold, PWM channels, and similar.
598 */
599 ret = la2016_init_params(sdi);
600 if (ret != SR_OK) {
601 sr_err("Cannot initialize device's hardware.");
602 return ret;
603 }
604
605 return SR_OK;
606}
607
608static int dev_close(struct sr_dev_inst *sdi)
609{
610 struct sr_usb_dev_inst *usb;
611
612 usb = sdi->conn;
613
614 if (!usb->devhdl)
615 return SR_ERR_BUG;
616
617 la2016_deinit_hardware(sdi);
618
619 sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
620 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
621 la2016_close_usb(sdi->conn);
622
623 return SR_OK;
624}
625
626static int config_get(uint32_t key, GVariant **data,
627 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
628{
629 struct dev_context *devc;
630 struct sr_usb_dev_inst *usb;
631 double rounded;
632 const char *label;
633
634 (void)cg;
635
636 if (!sdi)
637 return SR_ERR_ARG;
638 devc = sdi->priv;
639
640 switch (key) {
641 case SR_CONF_CONN:
642 if (!sdi->conn)
643 return SR_ERR_ARG;
644 usb = sdi->conn;
645 if (usb->address == 0xff) {
646 /*
647 * Device still needs to re-enumerate after firmware
648 * upload, so we don't know its (future) address.
649 */
650 return SR_ERR;
651 }
652 *data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
653 break;
654 case SR_CONF_SAMPLERATE:
655 *data = g_variant_new_uint64(devc->cur_samplerate);
656 break;
657 case SR_CONF_LIMIT_SAMPLES:
658 case SR_CONF_LIMIT_MSEC:
659 return sr_sw_limits_config_get(&devc->sw_limits, key, data);
660 case SR_CONF_CAPTURE_RATIO:
661 *data = g_variant_new_uint64(devc->capture_ratio);
662 break;
663 case SR_CONF_VOLTAGE_THRESHOLD:
664 rounded = (int)(devc->threshold_voltage / 0.1) * 0.1;
665 *data = std_gvar_tuple_double(rounded, rounded + 0.1);
666 return SR_OK;
667 case SR_CONF_LOGIC_THRESHOLD:
668 label = logic_threshold[devc->threshold_voltage_idx];
669 *data = g_variant_new_string(label);
670 break;
671 case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
672 *data = g_variant_new_double(devc->threshold_voltage);
673 break;
674
675 default:
676 return SR_ERR_NA;
677 }
678
679 return SR_OK;
680}
681
682static int config_set(uint32_t key, GVariant *data,
683 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
684{
685 struct dev_context *devc;
686 double low, high;
687 int idx;
688
689 (void)cg;
690
691 devc = sdi->priv;
692
693 switch (key) {
694 case SR_CONF_SAMPLERATE:
695 devc->cur_samplerate = g_variant_get_uint64(data);
696 break;
697 case SR_CONF_LIMIT_SAMPLES:
698 case SR_CONF_LIMIT_MSEC:
699 return sr_sw_limits_config_set(&devc->sw_limits, key, data);
700 case SR_CONF_CAPTURE_RATIO:
701 devc->capture_ratio = g_variant_get_uint64(data);
702 break;
703 case SR_CONF_VOLTAGE_THRESHOLD:
704 g_variant_get(data, "(dd)", &low, &high);
705 devc->threshold_voltage = (low + high) / 2.0;
706 devc->threshold_voltage_idx = LOGIC_THRESHOLD_IDX_USER;
707 break;
708 case SR_CONF_LOGIC_THRESHOLD: {
709 idx = std_str_idx(data, ARRAY_AND_SIZE(logic_threshold));
710 if (idx < 0)
711 return SR_ERR_ARG;
712 if (idx != LOGIC_THRESHOLD_IDX_USER) {
713 devc->threshold_voltage = logic_threshold_value[idx];
714 }
715 devc->threshold_voltage_idx = idx;
716 break;
717 }
718 case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
719 devc->threshold_voltage = g_variant_get_double(data);
720 break;
721 default:
722 return SR_ERR_NA;
723 }
724
725 return SR_OK;
726}
727
728static int config_list(uint32_t key, GVariant **data,
729 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
730{
731 struct dev_context *devc;
732
733 devc = sdi ? sdi->priv : NULL;
734
735 switch (key) {
736 case SR_CONF_SCAN_OPTIONS:
737 case SR_CONF_DEVICE_OPTIONS:
738 return STD_CONFIG_LIST(key, data, sdi, cg,
739 scanopts, drvopts, devopts);
740 case SR_CONF_SAMPLERATE:
741 if (!sdi)
742 return SR_ERR_ARG;
743 if (devc->model->samplerate == SR_MHZ(500))
744 *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_500mhz));
745 else if (devc->model->samplerate == SR_MHZ(200))
746 *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_200mhz));
747 else
748 *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_100mhz));
749 break;
750 case SR_CONF_LIMIT_SAMPLES:
751 *data = std_gvar_tuple_u64(0, LA2016_NUM_SAMPLES_MAX);
752 break;
753 case SR_CONF_VOLTAGE_THRESHOLD:
754 *data = std_gvar_min_max_step_thresholds(
755 LA2016_THR_VOLTAGE_MIN,
756 LA2016_THR_VOLTAGE_MAX, 0.1);
757 break;
758 case SR_CONF_TRIGGER_MATCH:
759 *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
760 break;
761 case SR_CONF_LOGIC_THRESHOLD:
762 *data = g_variant_new_strv(ARRAY_AND_SIZE(logic_threshold));
763 break;
764 default:
765 return SR_ERR_NA;
766 }
767
768 return SR_OK;
769}
770
771static int dev_acquisition_start(const struct sr_dev_inst *sdi)
772{
773 struct sr_dev_driver *di;
774 struct drv_context *drvc;
775 struct sr_context *ctx;
776 struct dev_context *devc;
777 int ret;
778
779 di = sdi->driver;
780 drvc = di->context;
781 ctx = drvc->sr_ctx;;
782 devc = sdi->priv;
783
784 if (!devc->feed_queue) {
785 devc->feed_queue = feed_queue_logic_alloc(sdi,
786 LA2016_CONVBUFFER_SIZE, sizeof(uint16_t));
787 if (!devc->feed_queue) {
788 sr_err("Cannot allocate buffer for session feed.");
789 return SR_ERR_MALLOC;
790 }
791 }
792
793 sr_sw_limits_acquisition_start(&devc->sw_limits);
794
795 ret = la2016_setup_acquisition(sdi);
796 if (ret != SR_OK) {
797 feed_queue_logic_free(devc->feed_queue);
798 devc->feed_queue = NULL;
799 return ret;
800 }
801
802 ret = la2016_start_acquisition(sdi);
803 if (ret != SR_OK) {
804 la2016_abort_acquisition(sdi);
805 feed_queue_logic_free(devc->feed_queue);
806 devc->feed_queue = NULL;
807 return ret;
808 }
809
810 devc->completion_seen = FALSE;
811 usb_source_add(sdi->session, ctx, 50,
812 la2016_receive_data, (void *)sdi);
813
814 std_session_send_df_header(sdi);
815
816 return SR_OK;
817}
818
819static int dev_acquisition_stop(struct sr_dev_inst *sdi)
820{
821 int ret;
822
823 ret = la2016_abort_acquisition(sdi);
824
825 return ret;
826}
827
828static struct sr_dev_driver kingst_la2016_driver_info = {
829 .name = "kingst-la2016",
830 .longname = "Kingst LA2016",
831 .api_version = 1,
832 .init = std_init,
833 .cleanup = std_cleanup,
834 .scan = scan,
835 .dev_list = std_dev_list,
836 .dev_clear = std_dev_clear,
837 .config_get = config_get,
838 .config_set = config_set,
839 .config_list = config_list,
840 .dev_open = dev_open,
841 .dev_close = dev_close,
842 .dev_acquisition_start = dev_acquisition_start,
843 .dev_acquisition_stop = dev_acquisition_stop,
844 .context = NULL,
845};
846SR_REGISTER_DEV_DRIVER(kingst_la2016_driver_info);
Hardware access and backend lib