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kingst-la2016: add PWM channel groups, announce as signal generator
[libsigrok.git] / src / hardware / kingst-la2016 / api.c
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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 SR_CONF_SIGNAL_GENERATOR,
43};
44
45static const uint32_t devopts[] = {
46 /* TODO: SR_CONF_CONTINUOUS, */
47 SR_CONF_CONN | SR_CONF_GET,
48 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
49 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
50 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
51 SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
52 SR_CONF_LOGIC_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
53 SR_CONF_LOGIC_THRESHOLD_CUSTOM | SR_CONF_GET | SR_CONF_SET,
54 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
55 SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
56};
57
58static const uint32_t devopts_cg_pwm[] = {
59 SR_CONF_ENABLED | SR_CONF_GET | SR_CONF_SET,
60 SR_CONF_OUTPUT_FREQUENCY | SR_CONF_GET | SR_CONF_SET,
61 SR_CONF_DUTY_CYCLE | SR_CONF_GET | SR_CONF_SET,
62};
63
64static const int32_t trigger_matches[] = {
65 SR_TRIGGER_ZERO,
66 SR_TRIGGER_ONE,
67 SR_TRIGGER_RISING,
68 SR_TRIGGER_FALLING,
69};
70
71static const char *channel_names_logic[] = {
72 "CH0", "CH1", "CH2", "CH3", "CH4", "CH5", "CH6", "CH7",
73 "CH8", "CH9", "CH10", "CH11", "CH12", "CH13", "CH14", "CH15",
74 "CH16", "CH17", "CH18", "CH19", "CH20", "CH21", "CH22", "CH23",
75 "CH24", "CH25", "CH26", "CH27", "CH28", "CH29", "CH30", "CH31",
76};
77
78static const char *channel_names_pwm[] = {
79 "PWM1", "PWM2",
80};
81
82/*
83 * The hardware uses a 100/200/500MHz base clock (model dependent) and
84 * a 16bit divider (common across all models). The range from 10kHz to
85 * 100/200/500MHz should be applicable to all devices. High rates may
86 * suffer from coarse resolution (e.g. in the "500MHz div 2" case) and
87 * may not provide the desired 1/2/5 steps. Fortunately this exclusively
88 * affects the 500MHz model where 250MHz is used instead of 200MHz and
89 * the 166MHz and 125MHz rates are not presented to users. Deep memory
90 * of these models and hardware compression reduce the necessity to let
91 * users pick from a huge list of possible rates.
92 *
93 */
94
95static const uint64_t rates_500mhz[] = {
96 SR_KHZ(10),
97 SR_KHZ(20),
98 SR_KHZ(50),
99 SR_KHZ(100),
100 SR_KHZ(200),
101 SR_KHZ(500),
102 SR_MHZ(1),
103 SR_MHZ(2),
104 SR_MHZ(5),
105 SR_MHZ(10),
106 SR_MHZ(20),
107 SR_MHZ(50),
108 SR_MHZ(100),
109 SR_MHZ(250),
110 SR_MHZ(500),
111};
112
113static const uint64_t rates_200mhz[] = {
114 SR_KHZ(10),
115 SR_KHZ(20),
116 SR_KHZ(50),
117 SR_KHZ(100),
118 SR_KHZ(200),
119 SR_KHZ(500),
120 SR_MHZ(1),
121 SR_MHZ(2),
122 SR_MHZ(5),
123 SR_MHZ(10),
124 SR_MHZ(20),
125 SR_MHZ(50),
126 SR_MHZ(100),
127 SR_MHZ(200),
128};
129
130static const uint64_t rates_100mhz[] = {
131 SR_KHZ(10),
132 SR_KHZ(20),
133 SR_KHZ(50),
134 SR_KHZ(100),
135 SR_KHZ(200),
136 SR_KHZ(500),
137 SR_MHZ(1),
138 SR_MHZ(2),
139 SR_MHZ(5),
140 SR_MHZ(10),
141 SR_MHZ(20),
142 SR_MHZ(50),
143 SR_MHZ(100),
144};
145
146static const float logic_threshold_value[] = {
147 1.58,
148 2.5,
149 1.165,
150 1.5,
151 1.25,
152 0.9,
153 0.75,
154 0.60,
155 0.45,
156};
157
158static const char *logic_threshold[] = {
159 "TTL 5V",
160 "CMOS 5V",
161 "CMOS 3.3V",
162 "CMOS 3.0V",
163 "CMOS 2.5V",
164 "CMOS 1.8V",
165 "CMOS 1.5V",
166 "CMOS 1.2V",
167 "CMOS 0.9V",
168 "USER",
169};
170
171#define LOGIC_THRESHOLD_IDX_USER (ARRAY_SIZE(logic_threshold) - 1)
172
173/* Convenience. Release an allocated devc from error paths. */
174static void kingst_la2016_free_devc(struct dev_context *devc)
175{
176 if (!devc)
177 return;
178 g_free(devc->mcu_firmware);
179 g_free(devc->fpga_bitstream);
180 g_free(devc);
181}
182
183/* Convenience. Release an allocated sdi from error paths. */
184static void kingst_la2016_free_sdi(struct sr_dev_inst *sdi)
185{
186 if (!sdi)
187 return;
188 g_free(sdi->vendor);
189 g_free(sdi->model);
190 g_free(sdi->version);
191 g_free(sdi->serial_num);
192 g_free(sdi->connection_id);
193 sr_usb_dev_inst_free(sdi->conn);
194 kingst_la2016_free_devc(sdi->priv);
195}
196
197/* Convenience. Open a USB device (including claiming an interface). */
198static int la2016_open_usb(struct sr_usb_dev_inst *usb,
199 libusb_device *dev, gboolean show_message)
200{
201 int ret;
202
203 ret = libusb_open(dev, &usb->devhdl);
204 if (ret != 0) {
205 if (show_message) {
206 sr_err("Cannot open device: %s.",
207 libusb_error_name(ret));
208 }
209 return SR_ERR_IO;
210 }
211
212 if (usb->address == 0xff) {
213 /*
214 * First encounter after firmware upload.
215 * Grab current address after enumeration.
216 */
217 usb->address = libusb_get_device_address(dev);
218 }
219
220 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
221 if (ret == LIBUSB_ERROR_BUSY) {
222 sr_err("Cannot claim USB interface. Another program or driver using it?");
223 return SR_ERR_IO;
224 } else if (ret == LIBUSB_ERROR_NO_DEVICE) {
225 sr_err("Device has been disconnected.");
226 return SR_ERR_IO;
227 } else if (ret != 0) {
228 sr_err("Cannot claim USB interface: %s.",
229 libusb_error_name(ret));
230 return SR_ERR_IO;
231 }
232
233 return SR_OK;
234}
235
236/* Convenience. Close an opened USB device (and release the interface). */
237static void la2016_close_usb(struct sr_usb_dev_inst *usb)
238{
239
240 if (!usb)
241 return;
242
243 if (usb->devhdl) {
244 libusb_release_interface(usb->devhdl, USB_INTERFACE);
245 libusb_close(usb->devhdl);
246 usb->devhdl = NULL;
247 }
248}
249
250/* Communicate to an USB device to identify the Kingst LA model. */
251static int la2016_identify_read(struct sr_dev_inst *sdi,
252 struct sr_usb_dev_inst *usb, libusb_device *dev,
253 gboolean show_message)
254{
255 int ret;
256
257 ret = la2016_open_usb(usb, dev, show_message);
258 if (ret != SR_OK) {
259 if (show_message)
260 sr_err("Cannot communicate to MCU firmware.");
261 return ret;
262 }
263
264 /*
265 * Also complete the hardware configuration (FPGA bitstream)
266 * when MCU firmware communication became operational. Either
267 * failure is considered fatal when probing for the device.
268 */
269 ret = la2016_identify_device(sdi, show_message);
270 if (ret == SR_OK) {
271 ret = la2016_init_hardware(sdi);
272 }
273
274 la2016_close_usb(usb);
275
276 return ret;
277}
278
279/* Find given conn_id in another USB enum. Identify Kingst LA model. */
280static int la2016_identify_enum(struct sr_dev_inst *sdi)
281{
282 struct sr_dev_driver *di;
283 struct drv_context *drvc;
284 struct sr_context *ctx;
285 libusb_device **devlist, *dev;
286 struct libusb_device_descriptor des;
287 int ret, id_ret;
288 size_t device_count, dev_idx;
289 char conn_id[64];
290
291 di = sdi->driver;
292 drvc = di->context;
293 ctx = drvc->sr_ctx;;
294
295 ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
296 if (ret < 0)
297 return SR_ERR_IO;
298 device_count = ret;
299 if (!device_count)
300 return SR_ERR_IO;
301 id_ret = SR_ERR_IO;
302 for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
303 dev = devlist[dev_idx];
304 libusb_get_device_descriptor(dev, &des);
305 if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
306 continue;
307 if (des.iProduct != LA2016_IPRODUCT_INDEX)
308 continue;
309 ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
310 if (ret < 0)
311 continue;
312 if (strcmp(sdi->connection_id, conn_id) != 0)
313 continue;
314 id_ret = la2016_identify_read(sdi, sdi->conn, dev, FALSE);
315 break;
316 }
317 libusb_free_device_list(devlist, 1);
318
319 return id_ret;
320}
321
322/* Wait for a device to re-appear after firmware upload. */
323static int la2016_identify_wait(struct sr_dev_inst *sdi)
324{
325 struct dev_context *devc;
326 uint64_t reset_done, now, elapsed_ms;
327 int ret;
328
329 devc = sdi->priv;
330
331 sr_info("Waiting for device to reset after firmware upload.");
332 now = g_get_monotonic_time();
333 reset_done = devc->fw_uploaded + RENUM_GONE_DELAY_MS * 1000;
334 if (now < reset_done)
335 g_usleep(reset_done - now);
336 do {
337 now = g_get_monotonic_time();
338 elapsed_ms = (now - devc->fw_uploaded) / 1000;
339 sr_spew("Waited %" PRIu64 "ms.", elapsed_ms);
340 ret = la2016_identify_enum(sdi);
341 if (ret == SR_OK) {
342 devc->fw_uploaded = 0;
343 break;
344 }
345 g_usleep(RENUM_POLL_INTERVAL_MS * 1000);
346 } while (elapsed_ms < RENUM_CHECK_PERIOD_MS);
347 if (ret != SR_OK) {
348 sr_err("Device failed to re-enumerate.");
349 return ret;
350 }
351 sr_info("Device came back after %" PRIi64 "ms.", elapsed_ms);
352
353 return SR_OK;
354}
355
356/*
357 * Open given conn_id from another USB enum. Used by dev_open(). Similar
358 * to, and should be kept in sync with la2016_identify_enum().
359 */
360static int la2016_open_enum(struct sr_dev_inst *sdi)
361{
362 struct sr_dev_driver *di;
363 struct drv_context *drvc;
364 struct sr_context *ctx;
365 libusb_device **devlist, *dev;
366 struct libusb_device_descriptor des;
367 int ret, open_ret;
368 size_t device_count, dev_idx;
369 char conn_id[64];
370
371 di = sdi->driver;
372 drvc = di->context;
373 ctx = drvc->sr_ctx;;
374
375 ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
376 if (ret < 0)
377 return SR_ERR_IO;
378 device_count = ret;
379 if (!device_count)
380 return SR_ERR_IO;
381 open_ret = SR_ERR_IO;
382 for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
383 dev = devlist[dev_idx];
384 libusb_get_device_descriptor(dev, &des);
385 if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
386 continue;
387 if (des.iProduct != LA2016_IPRODUCT_INDEX)
388 continue;
389 ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
390 if (ret < 0)
391 continue;
392 if (strcmp(sdi->connection_id, conn_id) != 0)
393 continue;
394 open_ret = la2016_open_usb(sdi->conn, dev, TRUE);
395 break;
396 }
397 libusb_free_device_list(devlist, 1);
398
399 return open_ret;
400}
401
402static GSList *scan(struct sr_dev_driver *di, GSList *options)
403{
404 struct drv_context *drvc;
405 struct sr_context *ctx;
406 struct dev_context *devc;
407 struct sr_dev_inst *sdi;
408 struct sr_usb_dev_inst *usb;
409 struct sr_config *src;
410 GSList *l;
411 GSList *devices, *found_devices, *renum_devices;
412 GSList *conn_devices;
413 struct libusb_device_descriptor des;
414 libusb_device **devlist, *dev;
415 size_t dev_count, dev_idx, ch_idx;
416 uint8_t bus, addr;
417 uint16_t pid;
418 const char *conn;
419 char conn_id[64];
420 int ret;
421 size_t ch_off, ch_max;
422 struct sr_channel *ch;
423 struct sr_channel_group *cg;
424
425 drvc = di->context;
426 ctx = drvc->sr_ctx;;
427
428 conn = NULL;
429 conn_devices = NULL;
430 for (l = options; l; l = l->next) {
431 src = l->data;
432 switch (src->key) {
433 case SR_CONF_CONN:
434 conn = g_variant_get_string(src->data, NULL);
435 break;
436 }
437 }
438 if (conn)
439 conn_devices = sr_usb_find(ctx->libusb_ctx, conn);
440 if (conn && !conn_devices) {
441 sr_err("Cannot find the specified connection '%s'.", conn);
442 return NULL;
443 }
444
445 /*
446 * Find all LA2016 devices, optionally upload firmware to them.
447 * Defer completion of sdi/devc creation until all (selected)
448 * devices were found in a usable state, and their models got
449 * identified which affect their feature set. It appears that
450 * we cannot communicate to the device within the same USB enum
451 * cycle, needs another USB enumeration after firmware upload.
452 */
453 devices = NULL;
454 found_devices = NULL;
455 renum_devices = NULL;
456 ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
457 if (ret < 0) {
458 sr_err("Cannot get device list: %s.", libusb_error_name(ret));
459 return devices;
460 }
461 dev_count = ret;
462 for (dev_idx = 0; dev_idx < dev_count; dev_idx++) {
463 dev = devlist[dev_idx];
464 bus = libusb_get_bus_number(dev);
465 addr = libusb_get_device_address(dev);
466
467 /* Filter by connection when externally specified. */
468 for (l = conn_devices; l; l = l->next) {
469 usb = l->data;
470 if (usb->bus == bus && usb->address == addr)
471 break;
472 }
473 if (conn_devices && !l) {
474 sr_spew("Bus %hhu, addr %hhu do not match specified filter.",
475 bus, addr);
476 continue;
477 }
478
479 /* Check USB VID:PID. Get the connection string. */
480 libusb_get_device_descriptor(dev, &des);
481 if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
482 continue;
483 pid = des.idProduct;
484 ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
485 if (ret < 0)
486 continue;
487 sr_dbg("USB enum found %04x:%04x at path %s, %d.%d.",
488 des.idVendor, des.idProduct, conn_id, bus, addr);
489 usb = sr_usb_dev_inst_new(bus, addr, NULL);
490
491 sdi = g_malloc0(sizeof(*sdi));
492 sdi->driver = di;
493 sdi->status = SR_ST_INITIALIZING;
494 sdi->inst_type = SR_INST_USB;
495 sdi->connection_id = g_strdup(conn_id);
496 sdi->conn = usb;
497
498 devc = g_malloc0(sizeof(*devc));
499 sdi->priv = devc;
500
501 /*
502 * Load MCU firmware if it is currently missing. Which
503 * makes the device disappear and renumerate in USB.
504 * We need to come back another time to communicate to
505 * this device.
506 */
507 devc->fw_uploaded = 0;
508 if (des.iProduct != LA2016_IPRODUCT_INDEX) {
509 sr_info("Uploading MCU firmware to '%s'.", conn_id);
510 ret = la2016_upload_firmware(sdi, ctx, dev, pid);
511 if (ret != SR_OK) {
512 sr_err("MCU firmware upload failed.");
513 kingst_la2016_free_sdi(sdi);
514 continue;
515 }
516 devc->fw_uploaded = g_get_monotonic_time();
517 usb->address = 0xff;
518 renum_devices = g_slist_append(renum_devices, sdi);
519 continue;
520 }
521
522 /*
523 * Communicate to the MCU firmware to access EEPROM data
524 * which lets us identify the device type. Then stop, to
525 * share remaining sdi/devc creation with those devices
526 * which had their MCU firmware uploaded above and which
527 * get revisited later.
528 */
529 ret = la2016_identify_read(sdi, usb, dev, TRUE);
530 if (ret != SR_OK || !devc->model) {
531 sr_err("Unknown or unsupported device type.");
532 kingst_la2016_free_sdi(sdi);
533 continue;
534 }
535 found_devices = g_slist_append(found_devices, sdi);
536 }
537 libusb_free_device_list(devlist, 1);
538 g_slist_free_full(conn_devices, sr_usb_dev_inst_free_cb);
539
540 /*
541 * Wait for devices to re-appear after firmware upload. Append
542 * the yet unidentified device to the list of found devices, or
543 * release the previously allocated sdi/devc.
544 */
545 for (l = renum_devices; l; l = l->next) {
546 sdi = l->data;
547 devc = sdi->priv;
548 ret = la2016_identify_wait(sdi);
549 if (ret != SR_OK || !devc->model) {
550 sr_dbg("Skipping unusable '%s'.", sdi->connection_id);
551 kingst_la2016_free_sdi(sdi);
552 continue;
553 }
554 found_devices = g_slist_append(found_devices, sdi);
555 }
556 g_slist_free(renum_devices);
557
558 /*
559 * All found devices got identified, their type is known here.
560 * Complete the sdi/devc creation. Assign default settings
561 * because the vendor firmware would not let us read back the
562 * previously written configuration.
563 */
564 for (l = found_devices; l; l = l->next) {
565 sdi = l->data;
566 devc = sdi->priv;
567
568 sdi->vendor = g_strdup("Kingst");
569 sdi->model = g_strdup(devc->model->name);
570 ch_off = 0;
571
572 /* Create the "Logic" channel group. */
573 ch_max = ARRAY_SIZE(channel_names_logic);
574 if (ch_max > devc->model->channel_count)
575 ch_max = devc->model->channel_count;
576 cg = sr_channel_group_new(sdi, "Logic", NULL);
577 devc->cg_logic = cg;
578 for (ch_idx = 0; ch_idx < ch_max; ch_idx++) {
579 ch = sr_channel_new(sdi, ch_off,
580 SR_CHANNEL_LOGIC, TRUE,
581 channel_names_logic[ch_idx]);
582 ch_off++;
583 cg->channels = g_slist_append(cg->channels, ch);
584 }
585
586 /* Create the "PWMx" channel groups. */
587 ch_max = ARRAY_SIZE(channel_names_pwm);
588 for (ch_idx = 0; ch_idx < ch_max; ch_idx++) {
589 const char *name;
590 name = channel_names_pwm[ch_idx];
591 cg = sr_channel_group_new(sdi, name, NULL);
592 if (!devc->cg_pwm)
593 devc->cg_pwm = cg;
594 ch = sr_channel_new(sdi, ch_off,
595 SR_CHANNEL_ANALOG, FALSE, name);
596 ch_off++;
597 cg->channels = g_slist_append(cg->channels, ch);
598 }
599
600 /*
601 * Ideally we'd get the previous configuration from the
602 * hardware, but this device is write-only. So we have
603 * to assign a fixed set of initial configuration values.
604 */
605 sr_sw_limits_init(&devc->sw_limits);
606 devc->sw_limits.limit_samples = 0;
607 devc->capture_ratio = 50;
608 devc->cur_samplerate = devc->model->samplerate;
609 devc->threshold_voltage_idx = 0;
610 devc->threshold_voltage = logic_threshold_value[devc->threshold_voltage_idx];
611 if (ARRAY_SIZE(devc->pwm_setting) >= 1) {
612 devc->pwm_setting[0].enabled = FALSE;
613 devc->pwm_setting[0].freq = SR_KHZ(1);
614 devc->pwm_setting[0].duty = 50;
615 }
616 if (ARRAY_SIZE(devc->pwm_setting) >= 2) {
617 devc->pwm_setting[1].enabled = FALSE;
618 devc->pwm_setting[1].freq = SR_KHZ(100);
619 devc->pwm_setting[1].duty = 50;
620 }
621
622 sdi->status = SR_ST_INACTIVE;
623 devices = g_slist_append(devices, sdi);
624 }
625 g_slist_free(found_devices);
626
627 return std_scan_complete(di, devices);
628}
629
630static int dev_open(struct sr_dev_inst *sdi)
631{
632 struct dev_context *devc;
633 int ret;
634 size_t ch;
635
636 devc = sdi->priv;
637
638 ret = la2016_open_enum(sdi);
639 if (ret != SR_OK) {
640 sr_err("Cannot open device.");
641 return ret;
642 }
643
644 /* Send most recent PWM configuration to the device. */
645 for (ch = 0; ch < ARRAY_SIZE(devc->pwm_setting); ch++) {
646 ret = la2016_write_pwm_config(sdi, ch);
647 if (ret != SR_OK)
648 return ret;
649 }
650
651 return SR_OK;
652}
653
654static int dev_close(struct sr_dev_inst *sdi)
655{
656 struct sr_usb_dev_inst *usb;
657
658 usb = sdi->conn;
659
660 if (!usb->devhdl)
661 return SR_ERR_BUG;
662
663 la2016_deinit_hardware(sdi);
664
665 sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
666 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
667 la2016_close_usb(sdi->conn);
668
669 return SR_OK;
670}
671
672/* Config API helper. Get type and index of a channel group. */
673static int get_cg_index(const struct sr_dev_inst *sdi,
674 const struct sr_channel_group *cg,
675 int *type, size_t *logic, size_t *analog)
676{
677 struct dev_context *devc;
678 GSList *l;
679 size_t idx;
680
681 /* Preset return values. */
682 if (type)
683 *type = 0;
684 if (logic)
685 *logic = 0;
686 if (analog)
687 *analog = 0;
688
689 /* Start categorizing the received cg. */
690 if (!sdi)
691 return SR_ERR_ARG;
692 devc = sdi->priv;
693 if (!cg)
694 return SR_OK;
695 l = sdi->channel_groups;
696
697 /* First sdi->channelgroups item is "Logic". */
698 if (!l)
699 return SR_ERR_BUG;
700 if (cg == l->data) {
701 if (type)
702 *type = SR_CHANNEL_LOGIC;
703 if (logic)
704 *logic = 0;
705 return SR_OK;
706 }
707 l = l->next;
708
709 /* Next sdi->channelgroups items are "PWMx". */
710 idx = 0;
711 while (l && l->data != cg) {
712 idx++;
713 l = l->next;
714 }
715 if (l && idx < ARRAY_SIZE(devc->pwm_setting)) {
716 if (type)
717 *type = SR_CHANNEL_ANALOG;
718 if (analog)
719 *analog = idx;
720 return SR_OK;
721 }
722
723 return SR_ERR_ARG;
724}
725
726static int config_get(uint32_t key, GVariant **data,
727 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
728{
729 struct dev_context *devc;
730 int ret, cg_type;
731 size_t logic_idx, analog_idx;
732 struct pwm_setting *pwm;
733 struct sr_usb_dev_inst *usb;
734 double rounded;
735 const char *label;
736
737 if (!sdi)
738 return SR_ERR_ARG;
739 devc = sdi->priv;
740
741 /* Check for types (and index) of channel groups. */
742 ret = get_cg_index(sdi, cg, &cg_type, &logic_idx, &analog_idx);
743 if (cg && ret != SR_OK)
744 return SR_ERR_ARG;
745
746 /* Handle requests for the "Logic" channel group. */
747 if (cg && cg_type == SR_CHANNEL_LOGIC) {
748 /* TODO */
749 return SR_ERR_NA;
750 }
751
752 /* Handle requests for the "PWMx" channel groups. */
753 if (cg && cg_type == SR_CHANNEL_ANALOG) {
754 pwm = &devc->pwm_setting[analog_idx];
755 switch (key) {
756 case SR_CONF_ENABLED:
757 *data = g_variant_new_boolean(pwm->enabled);
758 break;
759 case SR_CONF_OUTPUT_FREQUENCY:
760 *data = g_variant_new_double(pwm->freq);
761 break;
762 case SR_CONF_DUTY_CYCLE:
763 *data = g_variant_new_double(pwm->duty);
764 break;
765 default:
766 return SR_ERR_NA;
767 }
768 return SR_OK;
769 }
770
771 switch (key) {
772 case SR_CONF_CONN:
773 if (!sdi->conn)
774 return SR_ERR_ARG;
775 usb = sdi->conn;
776 if (usb->address == 0xff) {
777 /*
778 * Device still needs to re-enumerate after firmware
779 * upload, so we don't know its (future) address.
780 */
781 return SR_ERR;
782 }
783 *data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
784 break;
785 case SR_CONF_SAMPLERATE:
786 *data = g_variant_new_uint64(devc->cur_samplerate);
787 break;
788 case SR_CONF_LIMIT_SAMPLES:
789 case SR_CONF_LIMIT_MSEC:
790 return sr_sw_limits_config_get(&devc->sw_limits, key, data);
791 case SR_CONF_CAPTURE_RATIO:
792 *data = g_variant_new_uint64(devc->capture_ratio);
793 break;
794 case SR_CONF_VOLTAGE_THRESHOLD:
795 rounded = (int)(devc->threshold_voltage / 0.1) * 0.1;
796 *data = std_gvar_tuple_double(rounded, rounded + 0.1);
797 return SR_OK;
798 case SR_CONF_LOGIC_THRESHOLD:
799 label = logic_threshold[devc->threshold_voltage_idx];
800 *data = g_variant_new_string(label);
801 break;
802 case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
803 *data = g_variant_new_double(devc->threshold_voltage);
804 break;
805
806 default:
807 return SR_ERR_NA;
808 }
809
810 return SR_OK;
811}
812
813static int config_set(uint32_t key, GVariant *data,
814 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
815{
816 struct dev_context *devc;
817 int ret, cg_type;
818 size_t logic_idx, analog_idx;
819 struct pwm_setting *pwm;
820 double low, high;
821 int idx;
822
823 devc = sdi->priv;
824
825 /* Check for types (and index) of channel groups. */
826 ret = get_cg_index(sdi, cg, &cg_type, &logic_idx, &analog_idx);
827 if (cg && ret != SR_OK)
828 return SR_ERR_ARG;
829
830 /* Handle requests for the "Logic" channel group. */
831 if (cg && cg_type == SR_CHANNEL_LOGIC) {
832 /* TODO */
833 return SR_ERR_NA;
834 }
835
836 /* Handle requests for the "PWMx" channel groups. */
837 if (cg && cg_type == SR_CHANNEL_ANALOG) {
838 pwm = &devc->pwm_setting[analog_idx];
839 switch (key) {
840 case SR_CONF_ENABLED:
841 pwm->enabled = g_variant_get_boolean(data);
842 ret = la2016_write_pwm_config(sdi, analog_idx);
843 if (ret != SR_OK)
844 return ret;
845 break;
846 case SR_CONF_OUTPUT_FREQUENCY:
847 pwm->freq = g_variant_get_double(data);
848 ret = la2016_write_pwm_config(sdi, analog_idx);
849 if (ret != SR_OK)
850 return ret;
851 break;
852 case SR_CONF_DUTY_CYCLE:
853 pwm->duty = g_variant_get_double(data);
854 ret = la2016_write_pwm_config(sdi, analog_idx);
855 if (ret != SR_OK)
856 return ret;
857 break;
858 default:
859 return SR_ERR_NA;
860 }
861 return SR_OK;
862 }
863
864 switch (key) {
865 case SR_CONF_SAMPLERATE:
866 devc->cur_samplerate = g_variant_get_uint64(data);
867 break;
868 case SR_CONF_LIMIT_SAMPLES:
869 case SR_CONF_LIMIT_MSEC:
870 return sr_sw_limits_config_set(&devc->sw_limits, key, data);
871 case SR_CONF_CAPTURE_RATIO:
872 devc->capture_ratio = g_variant_get_uint64(data);
873 break;
874 case SR_CONF_VOLTAGE_THRESHOLD:
875 g_variant_get(data, "(dd)", &low, &high);
876 devc->threshold_voltage = (low + high) / 2.0;
877 devc->threshold_voltage_idx = LOGIC_THRESHOLD_IDX_USER;
878 break;
879 case SR_CONF_LOGIC_THRESHOLD: {
880 idx = std_str_idx(data, ARRAY_AND_SIZE(logic_threshold));
881 if (idx < 0)
882 return SR_ERR_ARG;
883 if (idx != LOGIC_THRESHOLD_IDX_USER) {
884 devc->threshold_voltage = logic_threshold_value[idx];
885 }
886 devc->threshold_voltage_idx = idx;
887 break;
888 }
889 case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
890 devc->threshold_voltage = g_variant_get_double(data);
891 break;
892 default:
893 return SR_ERR_NA;
894 }
895
896 return SR_OK;
897}
898
899static int config_list(uint32_t key, GVariant **data,
900 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
901{
902 struct dev_context *devc;
903 int ret, cg_type;
904 size_t logic_idx, analog_idx;
905
906 devc = sdi ? sdi->priv : NULL;
907
908 /* Check for types (and index) of channel groups. */
909 ret = get_cg_index(sdi, cg, &cg_type, &logic_idx, &analog_idx);
910 if (cg && ret != SR_OK)
911 return SR_ERR_ARG;
912
913 /* Handle requests for the "Logic" channel group. */
914 if (cg && cg_type == SR_CHANNEL_LOGIC) {
915 /* TODO */
916 return SR_ERR_NA;
917 }
918
919 /* Handle requests for the "PWMx" channel groups. */
920 if (cg && cg_type == SR_CHANNEL_ANALOG) {
921 switch (key) {
922 case SR_CONF_DEVICE_OPTIONS:
923 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
924 devopts_cg_pwm, ARRAY_SIZE(devopts_cg_pwm),
925 sizeof(devopts_cg_pwm[0]));
926 break;
927 default:
928 return SR_ERR_NA;
929 }
930 return SR_OK;
931 }
932
933 switch (key) {
934 case SR_CONF_SCAN_OPTIONS:
935 case SR_CONF_DEVICE_OPTIONS:
936 return STD_CONFIG_LIST(key, data, sdi, cg,
937 scanopts, drvopts, devopts);
938 case SR_CONF_SAMPLERATE:
939 if (!sdi)
940 return SR_ERR_ARG;
941 if (devc->model->samplerate == SR_MHZ(500))
942 *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_500mhz));
943 else if (devc->model->samplerate == SR_MHZ(200))
944 *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_200mhz));
945 else
946 *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_100mhz));
947 break;
948 case SR_CONF_LIMIT_SAMPLES:
949 *data = std_gvar_tuple_u64(0, LA2016_NUM_SAMPLES_MAX);
950 break;
951 case SR_CONF_VOLTAGE_THRESHOLD:
952 *data = std_gvar_min_max_step_thresholds(
953 LA2016_THR_VOLTAGE_MIN,
954 LA2016_THR_VOLTAGE_MAX, 0.1);
955 break;
956 case SR_CONF_TRIGGER_MATCH:
957 *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
958 break;
959 case SR_CONF_LOGIC_THRESHOLD:
960 *data = g_variant_new_strv(ARRAY_AND_SIZE(logic_threshold));
961 break;
962 default:
963 return SR_ERR_NA;
964 }
965
966 return SR_OK;
967}
968
969static int dev_acquisition_start(const struct sr_dev_inst *sdi)
970{
971 struct sr_dev_driver *di;
972 struct drv_context *drvc;
973 struct sr_context *ctx;
974 struct dev_context *devc;
975 int ret;
976
977 di = sdi->driver;
978 drvc = di->context;
979 ctx = drvc->sr_ctx;;
980 devc = sdi->priv;
981
982 if (!devc->feed_queue) {
983 devc->feed_queue = feed_queue_logic_alloc(sdi,
984 LA2016_CONVBUFFER_SIZE, sizeof(uint16_t));
985 if (!devc->feed_queue) {
986 sr_err("Cannot allocate buffer for session feed.");
987 return SR_ERR_MALLOC;
988 }
989 }
990
991 sr_sw_limits_acquisition_start(&devc->sw_limits);
992
993 ret = la2016_setup_acquisition(sdi);
994 if (ret != SR_OK) {
995 feed_queue_logic_free(devc->feed_queue);
996 devc->feed_queue = NULL;
997 return ret;
998 }
999
1000 ret = la2016_start_acquisition(sdi);
1001 if (ret != SR_OK) {
1002 la2016_abort_acquisition(sdi);
1003 feed_queue_logic_free(devc->feed_queue);
1004 devc->feed_queue = NULL;
1005 return ret;
1006 }
1007
1008 devc->completion_seen = FALSE;
1009 usb_source_add(sdi->session, ctx, 50,
1010 la2016_receive_data, (void *)sdi);
1011
1012 std_session_send_df_header(sdi);
1013
1014 return SR_OK;
1015}
1016
1017static int dev_acquisition_stop(struct sr_dev_inst *sdi)
1018{
1019 int ret;
1020
1021 ret = la2016_abort_acquisition(sdi);
1022
1023 return ret;
1024}
1025
1026static struct sr_dev_driver kingst_la2016_driver_info = {
1027 .name = "kingst-la2016",
1028 .longname = "Kingst LA2016",
1029 .api_version = 1,
1030 .init = std_init,
1031 .cleanup = std_cleanup,
1032 .scan = scan,
1033 .dev_list = std_dev_list,
1034 .dev_clear = std_dev_clear,
1035 .config_get = config_get,
1036 .config_set = config_set,
1037 .config_list = config_list,
1038 .dev_open = dev_open,
1039 .dev_close = dev_close,
1040 .dev_acquisition_start = dev_acquisition_start,
1041 .dev_acquisition_stop = dev_acquisition_stop,
1042 .context = NULL,
1043};
1044SR_REGISTER_DEV_DRIVER(kingst_la2016_driver_info);
Hardware access and backend lib