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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Daniel Elstner <daniel.kitta@gmail.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 <config.h> | |
21 | #include <glib.h> | |
22 | #include <libusb.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <libsigrok/libsigrok.h> | |
26 | #include <libsigrok-internal.h> | |
27 | #include "protocol.h" | |
28 | ||
29 | static const uint32_t scanopts[] = { | |
30 | SR_CONF_CONN, | |
31 | }; | |
32 | ||
33 | static const uint32_t drvopts[] = { | |
34 | SR_CONF_LOGIC_ANALYZER, | |
35 | }; | |
36 | ||
37 | static const int32_t trigger_matches[] = { | |
38 | SR_TRIGGER_ZERO, | |
39 | SR_TRIGGER_ONE, | |
40 | SR_TRIGGER_RISING, | |
41 | SR_TRIGGER_FALLING, | |
42 | }; | |
43 | ||
44 | static const char *trigger_source_names[] = { | |
45 | [TRIGGER_CHANNELS] = "CH", | |
46 | [TRIGGER_EXT_TRG] = "TRG", | |
47 | }; | |
48 | ||
49 | static const char *signal_edge_names[] = { | |
50 | [EDGE_POSITIVE] = "r", | |
51 | [EDGE_NEGATIVE] = "f", | |
52 | }; | |
53 | ||
54 | static struct sr_dev_inst *dev_inst_new(const struct model_info *model) | |
55 | { | |
56 | struct sr_dev_inst *sdi; | |
57 | struct dev_context *devc; | |
58 | int i; | |
59 | char name[8]; | |
60 | ||
61 | devc = g_malloc0(sizeof(struct dev_context)); | |
62 | devc->model = model; | |
63 | devc->active_fpga_config = FPGA_NOCONF; | |
64 | devc->cfg_rle = TRUE; | |
65 | devc->samplerate = model->samplerates[0]; | |
66 | devc->channel_mask = (UINT64_C(1) << model->num_channels) - 1; | |
67 | ||
68 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
69 | sdi->status = SR_ST_INACTIVE; | |
70 | sdi->vendor = g_strdup("SysClk"); | |
71 | sdi->model = g_strdup(model->name); | |
72 | sdi->priv = devc; | |
73 | ||
74 | for (i = 0; i < model->num_channels; i++) { | |
75 | g_snprintf(name, sizeof(name), "CH%d", i + 1); | |
76 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, name); | |
77 | } | |
78 | ||
79 | return sdi; | |
80 | } | |
81 | ||
82 | /* Create a new device instance for a libusb device if it is a SysClk LWLA | |
83 | * device and also matches the connection specification. | |
84 | */ | |
85 | static struct sr_dev_inst *dev_inst_new_matching(GSList *conn_matches, | |
86 | libusb_device *dev) | |
87 | { | |
88 | GSList *node; | |
89 | struct sr_usb_dev_inst *usb; | |
90 | const struct model_info *model; | |
91 | struct sr_dev_inst *sdi; | |
92 | struct libusb_device_descriptor des; | |
93 | int bus, address, ret; | |
94 | unsigned int vid, pid; | |
95 | ||
96 | bus = libusb_get_bus_number(dev); | |
97 | address = libusb_get_device_address(dev); | |
98 | ||
99 | for (node = conn_matches; node != NULL; node = node->next) { | |
100 | usb = node->data; | |
101 | if (usb && usb->bus == bus && usb->address == address) | |
102 | break; /* found */ | |
103 | } | |
104 | if (conn_matches && !node) | |
105 | return NULL; /* no match */ | |
106 | ||
107 | ret = libusb_get_device_descriptor(dev, &des); | |
108 | if (ret != 0) { | |
109 | sr_err("Failed to get USB device descriptor: %s.", | |
110 | libusb_error_name(ret)); | |
111 | return NULL; | |
112 | } | |
113 | vid = des.idVendor; | |
114 | pid = des.idProduct; | |
115 | ||
116 | /* Create sigrok device instance. */ | |
117 | if (vid == USB_VID_SYSCLK && pid == USB_PID_LWLA1016) { | |
118 | model = &lwla1016_info; | |
119 | } else if (vid == USB_VID_SYSCLK && pid == USB_PID_LWLA1034) { | |
120 | model = &lwla1034_info; | |
121 | } else { | |
122 | if (conn_matches) | |
123 | sr_warn("USB device %d.%d (%04x:%04x) is not a" | |
124 | " SysClk LWLA.", bus, address, vid, pid); | |
125 | return NULL; | |
126 | } | |
127 | sdi = dev_inst_new(model); | |
128 | ||
129 | sdi->inst_type = SR_INST_USB; | |
130 | sdi->conn = sr_usb_dev_inst_new(bus, address, NULL); | |
131 | ||
132 | return sdi; | |
133 | } | |
134 | ||
135 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
136 | { | |
137 | GSList *conn_devices, *devices, *node; | |
138 | struct drv_context *drvc; | |
139 | struct sr_dev_inst *sdi; | |
140 | struct sr_config *src; | |
141 | const char *conn; | |
142 | libusb_device **devlist; | |
143 | ssize_t num_devs, i; | |
144 | ||
145 | drvc = di->context; | |
146 | conn = NULL; | |
147 | conn_devices = NULL; | |
148 | devices = NULL; | |
149 | ||
150 | for (node = options; node != NULL; node = node->next) { | |
151 | src = node->data; | |
152 | if (src->key == SR_CONF_CONN) { | |
153 | conn = g_variant_get_string(src->data, NULL); | |
154 | break; | |
155 | } | |
156 | } | |
157 | if (conn) { | |
158 | /* Find devices matching the connection specification. */ | |
159 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
160 | } | |
161 | ||
162 | /* List all libusb devices. */ | |
163 | num_devs = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
164 | if (num_devs < 0) { | |
165 | sr_err("Failed to list USB devices: %s.", | |
166 | libusb_error_name(num_devs)); | |
167 | g_slist_free_full(conn_devices, | |
168 | (GDestroyNotify)&sr_usb_dev_inst_free); | |
169 | return NULL; | |
170 | } | |
171 | ||
172 | /* Scan the USB device list for matching LWLA devices. */ | |
173 | for (i = 0; i < num_devs; i++) { | |
174 | sdi = dev_inst_new_matching(conn_devices, devlist[i]); | |
175 | if (!sdi) | |
176 | continue; /* no match */ | |
177 | ||
178 | /* Register device instance with driver. */ | |
179 | devices = g_slist_append(devices, sdi); | |
180 | } | |
181 | ||
182 | libusb_free_device_list(devlist, 1); | |
183 | g_slist_free_full(conn_devices, (GDestroyNotify)&sr_usb_dev_inst_free); | |
184 | ||
185 | return std_scan_complete(di, devices); | |
186 | } | |
187 | ||
188 | /* Drain any pending data from the USB transfer buffers on the device. | |
189 | * This may be necessary e.g. after a crash or generally to clean up after | |
190 | * an abnormal condition. | |
191 | */ | |
192 | static int drain_usb(struct sr_usb_dev_inst *usb, unsigned int endpoint) | |
193 | { | |
194 | int drained, xfer_len, ret; | |
195 | unsigned char buf[512]; | |
196 | const unsigned int drain_timeout_ms = 10; | |
197 | ||
198 | drained = 0; | |
199 | do { | |
200 | xfer_len = 0; | |
201 | ret = libusb_bulk_transfer(usb->devhdl, endpoint, | |
202 | buf, sizeof(buf), &xfer_len, | |
203 | drain_timeout_ms); | |
204 | drained += xfer_len; | |
205 | } while (ret == LIBUSB_SUCCESS && xfer_len != 0); | |
206 | ||
207 | if (ret != LIBUSB_SUCCESS && ret != LIBUSB_ERROR_TIMEOUT) { | |
208 | sr_err("Failed to drain USB endpoint %u: %s.", | |
209 | endpoint & (LIBUSB_ENDPOINT_IN - 1), | |
210 | libusb_error_name(ret)); | |
211 | return SR_ERR; | |
212 | } | |
213 | if (drained > 0) { | |
214 | sr_warn("Drained %d bytes from USB endpoint %u.", | |
215 | drained, endpoint & (LIBUSB_ENDPOINT_IN - 1)); | |
216 | } | |
217 | ||
218 | return SR_OK; | |
219 | } | |
220 | ||
221 | static int dev_open(struct sr_dev_inst *sdi) | |
222 | { | |
223 | struct drv_context *drvc; | |
224 | struct dev_context *devc; | |
225 | struct sr_usb_dev_inst *usb; | |
226 | int i, ret; | |
227 | ||
228 | drvc = sdi->driver->context; | |
229 | devc = sdi->priv; | |
230 | usb = sdi->conn; | |
231 | ||
232 | /* Try the whole shebang three times, fingers crossed. */ | |
233 | for (i = 0; i < 3; i++) { | |
234 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); | |
235 | if (ret != SR_OK) | |
236 | return ret; | |
237 | ||
238 | ret = libusb_set_configuration(usb->devhdl, USB_CONFIG); | |
239 | if (ret != LIBUSB_SUCCESS) { | |
240 | sr_err("Failed to set USB configuration: %s.", | |
241 | libusb_error_name(ret)); | |
242 | sr_usb_close(usb); | |
243 | return SR_ERR; | |
244 | } | |
245 | ||
246 | ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
247 | if (ret != LIBUSB_SUCCESS) { | |
248 | sr_err("Failed to claim interface: %s.", | |
249 | libusb_error_name(ret)); | |
250 | sr_usb_close(usb); | |
251 | return SR_ERR; | |
252 | } | |
253 | ||
254 | ret = drain_usb(usb, EP_REPLY); | |
255 | if (ret != SR_OK) { | |
256 | sr_usb_close(usb); | |
257 | return ret; | |
258 | } | |
259 | /* This delay appears to be necessary for reliable operation. */ | |
260 | g_usleep(30 * 1000); | |
261 | ||
262 | devc->active_fpga_config = FPGA_NOCONF; | |
263 | devc->short_transfer_quirk = FALSE; | |
264 | devc->state = STATE_IDLE; | |
265 | ||
266 | ret = (*devc->model->apply_fpga_config)(sdi); | |
267 | ||
268 | if (ret == SR_OK) | |
269 | ret = (*devc->model->device_init_check)(sdi); | |
270 | if (ret == SR_OK) | |
271 | break; | |
272 | ||
273 | /* Rinse and repeat. */ | |
274 | sr_usb_close(usb); | |
275 | } | |
276 | ||
277 | if (ret == SR_OK && devc->short_transfer_quirk) | |
278 | sr_warn("Short transfer quirk detected! " | |
279 | "Memory reads will be slow."); | |
280 | return ret; | |
281 | } | |
282 | ||
283 | static int dev_close(struct sr_dev_inst *sdi) | |
284 | { | |
285 | struct dev_context *devc; | |
286 | struct sr_usb_dev_inst *usb; | |
287 | int ret; | |
288 | ||
289 | devc = sdi->priv; | |
290 | usb = sdi->conn; | |
291 | ||
292 | if (devc->acquisition) { | |
293 | sr_err("Cannot close device during acquisition!"); | |
294 | /* Request stop, leak handle, and prepare for the worst. */ | |
295 | devc->cancel_requested = TRUE; | |
296 | return SR_ERR_BUG; | |
297 | } | |
298 | ||
299 | /* Download of the shutdown bitstream, if any. */ | |
300 | ret = (*devc->model->apply_fpga_config)(sdi); | |
301 | if (ret != SR_OK) | |
302 | sr_warn("Unable to shut down device."); | |
303 | ||
304 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
305 | ||
306 | sr_usb_close(usb); | |
307 | ||
308 | return SR_OK; | |
309 | } | |
310 | ||
311 | /* Check whether the device options contain a specific key. | |
312 | * Also match against get/set/list bits if specified. | |
313 | */ | |
314 | static int has_devopt(const struct model_info *model, uint32_t key) | |
315 | { | |
316 | unsigned int i; | |
317 | ||
318 | for (i = 0; i < model->num_devopts; i++) { | |
319 | if ((model->devopts[i] & (SR_CONF_MASK | key)) == key) | |
320 | return TRUE; | |
321 | } | |
322 | ||
323 | return FALSE; | |
324 | } | |
325 | ||
326 | static int config_get(uint32_t key, GVariant **data, | |
327 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
328 | { | |
329 | struct dev_context *devc; | |
330 | unsigned int idx; | |
331 | ||
332 | (void)cg; | |
333 | ||
334 | if (!sdi) | |
335 | return SR_ERR_ARG; | |
336 | ||
337 | devc = sdi->priv; | |
338 | ||
339 | if (!has_devopt(devc->model, key | SR_CONF_GET)) | |
340 | return SR_ERR_NA; | |
341 | ||
342 | switch (key) { | |
343 | case SR_CONF_SAMPLERATE: | |
344 | *data = g_variant_new_uint64(devc->samplerate); | |
345 | break; | |
346 | case SR_CONF_LIMIT_MSEC: | |
347 | *data = g_variant_new_uint64(devc->limit_msec); | |
348 | break; | |
349 | case SR_CONF_LIMIT_SAMPLES: | |
350 | *data = g_variant_new_uint64(devc->limit_samples); | |
351 | break; | |
352 | case SR_CONF_RLE: | |
353 | *data = g_variant_new_boolean(devc->cfg_rle); | |
354 | break; | |
355 | case SR_CONF_EXTERNAL_CLOCK: | |
356 | *data = g_variant_new_boolean(devc->cfg_clock_source | |
357 | == CLOCK_EXT_CLK); | |
358 | break; | |
359 | case SR_CONF_CLOCK_EDGE: | |
360 | idx = devc->cfg_clock_edge; | |
361 | if (idx >= ARRAY_SIZE(signal_edge_names)) | |
362 | return SR_ERR_BUG; | |
363 | *data = g_variant_new_string(signal_edge_names[idx]); | |
364 | break; | |
365 | case SR_CONF_TRIGGER_SOURCE: | |
366 | idx = devc->cfg_trigger_source; | |
367 | if (idx >= ARRAY_SIZE(trigger_source_names)) | |
368 | return SR_ERR_BUG; | |
369 | *data = g_variant_new_string(trigger_source_names[idx]); | |
370 | break; | |
371 | case SR_CONF_TRIGGER_SLOPE: | |
372 | idx = devc->cfg_trigger_slope; | |
373 | if (idx >= ARRAY_SIZE(signal_edge_names)) | |
374 | return SR_ERR_BUG; | |
375 | *data = g_variant_new_string(signal_edge_names[idx]); | |
376 | break; | |
377 | default: | |
378 | /* Must not happen for a key listed in devopts. */ | |
379 | return SR_ERR_BUG; | |
380 | } | |
381 | ||
382 | return SR_OK; | |
383 | } | |
384 | ||
385 | static int config_set(uint32_t key, GVariant *data, | |
386 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
387 | { | |
388 | uint64_t value; | |
389 | struct dev_context *devc; | |
390 | int idx; | |
391 | ||
392 | (void)cg; | |
393 | ||
394 | if (!sdi) | |
395 | return SR_ERR_ARG; | |
396 | ||
397 | devc = sdi->priv; | |
398 | ||
399 | if (!has_devopt(devc->model, key | SR_CONF_SET)) | |
400 | return SR_ERR_NA; | |
401 | ||
402 | switch (key) { | |
403 | case SR_CONF_SAMPLERATE: | |
404 | value = g_variant_get_uint64(data); | |
405 | if (value < devc->model->samplerates[devc->model->num_samplerates - 1] | |
406 | || value > devc->model->samplerates[0]) | |
407 | return SR_ERR_SAMPLERATE; | |
408 | devc->samplerate = value; | |
409 | break; | |
410 | case SR_CONF_LIMIT_MSEC: | |
411 | value = g_variant_get_uint64(data); | |
412 | if (value > MAX_LIMIT_MSEC) | |
413 | return SR_ERR_ARG; | |
414 | devc->limit_msec = value; | |
415 | break; | |
416 | case SR_CONF_LIMIT_SAMPLES: | |
417 | value = g_variant_get_uint64(data); | |
418 | if (value > MAX_LIMIT_SAMPLES) | |
419 | return SR_ERR_ARG; | |
420 | devc->limit_samples = value; | |
421 | break; | |
422 | case SR_CONF_RLE: | |
423 | devc->cfg_rle = g_variant_get_boolean(data); | |
424 | break; | |
425 | case SR_CONF_EXTERNAL_CLOCK: | |
426 | devc->cfg_clock_source = (g_variant_get_boolean(data)) | |
427 | ? CLOCK_EXT_CLK : CLOCK_INTERNAL; | |
428 | break; | |
429 | case SR_CONF_CLOCK_EDGE: | |
430 | if ((idx = std_str_idx(data, ARRAY_AND_SIZE(signal_edge_names))) < 0) | |
431 | return SR_ERR_ARG; | |
432 | devc->cfg_clock_edge = idx; | |
433 | break; | |
434 | case SR_CONF_TRIGGER_SOURCE: | |
435 | if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_source_names))) < 0) | |
436 | return SR_ERR_ARG; | |
437 | devc->cfg_trigger_source = idx; | |
438 | break; | |
439 | case SR_CONF_TRIGGER_SLOPE: | |
440 | if ((idx = std_str_idx(data, ARRAY_AND_SIZE(signal_edge_names))) < 0) | |
441 | return SR_ERR_ARG; | |
442 | devc->cfg_trigger_slope = idx; | |
443 | break; | |
444 | default: | |
445 | /* Must not happen for a key listed in devopts. */ | |
446 | return SR_ERR_BUG; | |
447 | } | |
448 | ||
449 | return SR_OK; | |
450 | } | |
451 | ||
452 | static int config_channel_set(const struct sr_dev_inst *sdi, | |
453 | struct sr_channel *ch, unsigned int changes) | |
454 | { | |
455 | uint64_t channel_bit; | |
456 | struct dev_context *devc; | |
457 | ||
458 | if (!sdi) | |
459 | return SR_ERR_ARG; | |
460 | ||
461 | devc = sdi->priv; | |
462 | ||
463 | if (ch->index < 0 || ch->index >= devc->model->num_channels) { | |
464 | sr_err("Channel index %d out of range.", ch->index); | |
465 | return SR_ERR_BUG; | |
466 | } | |
467 | ||
468 | if ((changes & SR_CHANNEL_SET_ENABLED) != 0) { | |
469 | channel_bit = UINT64_C(1) << ch->index; | |
470 | ||
471 | /* Enable or disable logic input for this channel. */ | |
472 | if (ch->enabled) | |
473 | devc->channel_mask |= channel_bit; | |
474 | else | |
475 | devc->channel_mask &= ~channel_bit; | |
476 | } | |
477 | ||
478 | return SR_OK; | |
479 | } | |
480 | ||
481 | /* Derive trigger masks from the session's trigger configuration. */ | |
482 | static int prepare_trigger_masks(const struct sr_dev_inst *sdi) | |
483 | { | |
484 | uint64_t trigger_mask, trigger_values, trigger_edge_mask; | |
485 | uint64_t level_bit, type_bit; | |
486 | struct dev_context *devc; | |
487 | struct sr_trigger *trigger; | |
488 | struct sr_trigger_stage *stage; | |
489 | struct sr_trigger_match *match; | |
490 | const GSList *node; | |
491 | int idx; | |
492 | enum sr_trigger_matches trg; | |
493 | ||
494 | devc = sdi->priv; | |
495 | ||
496 | trigger = sr_session_trigger_get(sdi->session); | |
497 | if (!trigger || !trigger->stages) | |
498 | return SR_OK; | |
499 | ||
500 | if (trigger->stages->next) { | |
501 | sr_err("This device only supports 1 trigger stage."); | |
502 | return SR_ERR_ARG; | |
503 | } | |
504 | stage = trigger->stages->data; | |
505 | ||
506 | trigger_mask = 0; | |
507 | trigger_values = 0; | |
508 | trigger_edge_mask = 0; | |
509 | ||
510 | for (node = stage->matches; node; node = node->next) { | |
511 | match = node->data; | |
512 | ||
513 | if (!match->channel->enabled) | |
514 | continue; /* Ignore disabled channel. */ | |
515 | ||
516 | idx = match->channel->index; | |
517 | trg = match->match; | |
518 | ||
519 | if (idx < 0 || idx >= devc->model->num_channels) { | |
520 | sr_err("Channel index %d out of range.", idx); | |
521 | return SR_ERR_BUG; /* Should not happen. */ | |
522 | } | |
523 | if (trg != SR_TRIGGER_ZERO | |
524 | && trg != SR_TRIGGER_ONE | |
525 | && trg != SR_TRIGGER_RISING | |
526 | && trg != SR_TRIGGER_FALLING) { | |
527 | sr_err("Unsupported trigger match for CH%d.", idx + 1); | |
528 | return SR_ERR_ARG; | |
529 | } | |
530 | level_bit = (trg == SR_TRIGGER_ONE | |
531 | || trg == SR_TRIGGER_RISING) ? 1 : 0; | |
532 | type_bit = (trg == SR_TRIGGER_RISING | |
533 | || trg == SR_TRIGGER_FALLING) ? 1 : 0; | |
534 | ||
535 | trigger_mask |= UINT64_C(1) << idx; | |
536 | trigger_values |= level_bit << idx; | |
537 | trigger_edge_mask |= type_bit << idx; | |
538 | } | |
539 | devc->trigger_mask = trigger_mask; | |
540 | devc->trigger_values = trigger_values; | |
541 | devc->trigger_edge_mask = trigger_edge_mask; | |
542 | ||
543 | return SR_OK; | |
544 | } | |
545 | ||
546 | static int config_commit(const struct sr_dev_inst *sdi) | |
547 | { | |
548 | struct dev_context *devc; | |
549 | int ret; | |
550 | ||
551 | devc = sdi->priv; | |
552 | ||
553 | if (devc->acquisition) { | |
554 | sr_err("Acquisition still in progress?"); | |
555 | return SR_ERR; | |
556 | } | |
557 | ||
558 | ret = prepare_trigger_masks(sdi); | |
559 | if (ret != SR_OK) | |
560 | return ret; | |
561 | ||
562 | ret = (*devc->model->apply_fpga_config)(sdi); | |
563 | if (ret != SR_OK) { | |
564 | sr_err("Failed to apply FPGA configuration."); | |
565 | return ret; | |
566 | } | |
567 | ||
568 | return SR_OK; | |
569 | } | |
570 | ||
571 | static int config_list(uint32_t key, GVariant **data, | |
572 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
573 | { | |
574 | struct dev_context *devc; | |
575 | ||
576 | devc = (sdi) ? sdi->priv : NULL; | |
577 | ||
578 | switch (key) { | |
579 | case SR_CONF_SCAN_OPTIONS: | |
580 | case SR_CONF_DEVICE_OPTIONS: | |
581 | return std_opts_config_list(key, data, sdi, cg, | |
582 | ARRAY_AND_SIZE(scanopts), ARRAY_AND_SIZE(drvopts), | |
583 | (devc) ? devc->model->devopts : NULL, | |
584 | (devc) ? devc->model->num_devopts : 0); | |
585 | } | |
586 | ||
587 | if (!has_devopt(devc->model, key | SR_CONF_LIST)) | |
588 | return SR_ERR_NA; | |
589 | ||
590 | switch (key) { | |
591 | case SR_CONF_SAMPLERATE: | |
592 | *data = std_gvar_samplerates(devc->model->samplerates, devc->model->num_samplerates); | |
593 | break; | |
594 | case SR_CONF_TRIGGER_MATCH: | |
595 | *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches)); | |
596 | break; | |
597 | case SR_CONF_TRIGGER_SOURCE: | |
598 | *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_source_names)); | |
599 | break; | |
600 | case SR_CONF_TRIGGER_SLOPE: | |
601 | case SR_CONF_CLOCK_EDGE: | |
602 | *data = g_variant_new_strv(ARRAY_AND_SIZE(signal_edge_names)); | |
603 | break; | |
604 | default: | |
605 | /* Must not happen for a key listed in devopts. */ | |
606 | return SR_ERR_BUG; | |
607 | } | |
608 | ||
609 | return SR_OK; | |
610 | } | |
611 | ||
612 | /* Set up the device hardware to begin capturing samples as soon as the | |
613 | * configured trigger conditions are met, or immediately if no triggers | |
614 | * are configured. | |
615 | */ | |
616 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
617 | { | |
618 | return lwla_start_acquisition(sdi); | |
619 | } | |
620 | ||
621 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
622 | { | |
623 | struct dev_context *devc; | |
624 | ||
625 | devc = sdi->priv; | |
626 | ||
627 | if (devc->state != STATE_IDLE && !devc->cancel_requested) { | |
628 | devc->cancel_requested = TRUE; | |
629 | sr_dbg("Requesting cancel."); | |
630 | } | |
631 | ||
632 | return SR_OK; | |
633 | } | |
634 | ||
635 | static struct sr_dev_driver sysclk_lwla_driver_info = { | |
636 | .name = "sysclk-lwla", | |
637 | .longname = "SysClk LWLA series", | |
638 | .api_version = 1, | |
639 | .init = std_init, | |
640 | .cleanup = std_cleanup, | |
641 | .scan = scan, | |
642 | .dev_list = std_dev_list, | |
643 | .dev_clear = std_dev_clear, | |
644 | .config_get = config_get, | |
645 | .config_set = config_set, | |
646 | .config_channel_set = config_channel_set, | |
647 | .config_commit = config_commit, | |
648 | .config_list = config_list, | |
649 | .dev_open = dev_open, | |
650 | .dev_close = dev_close, | |
651 | .dev_acquisition_start = dev_acquisition_start, | |
652 | .dev_acquisition_stop = dev_acquisition_stop, | |
653 | .context = NULL, | |
654 | }; | |
655 | SR_REGISTER_DEV_DRIVER(sysclk_lwla_driver_info); |