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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 | /* Supported device scan options. | |
30 | */ | |
31 | static const uint32_t scanopts[] = { | |
32 | SR_CONF_CONN, | |
33 | }; | |
34 | ||
35 | /* Driver capabilities. | |
36 | */ | |
37 | static const uint32_t drvopts[] = { | |
38 | SR_CONF_LOGIC_ANALYZER, | |
39 | }; | |
40 | ||
41 | /* Supported trigger match conditions. | |
42 | */ | |
43 | static const int32_t trigger_matches[] = { | |
44 | SR_TRIGGER_ZERO, | |
45 | SR_TRIGGER_ONE, | |
46 | SR_TRIGGER_RISING, | |
47 | SR_TRIGGER_FALLING, | |
48 | }; | |
49 | ||
50 | /* Names assigned to available trigger sources. | |
51 | */ | |
52 | static const char *const trigger_source_names[] = { | |
53 | [TRIGGER_CHANNELS] = "CH", | |
54 | [TRIGGER_EXT_TRG] = "TRG", | |
55 | }; | |
56 | ||
57 | /* Names assigned to available edge slope choices. | |
58 | */ | |
59 | static const char *const signal_edge_names[] = { | |
60 | [EDGE_POSITIVE] = "r", | |
61 | [EDGE_NEGATIVE] = "f", | |
62 | }; | |
63 | ||
64 | /* Initialize the SysClk LWLA driver. | |
65 | */ | |
66 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
67 | { | |
68 | return std_init(sr_ctx, di, LOG_PREFIX); | |
69 | } | |
70 | ||
71 | /* Create a new sigrok device instance for the indicated LWLA model. | |
72 | */ | |
73 | static struct sr_dev_inst *dev_inst_new(const struct model_info *model) | |
74 | { | |
75 | struct sr_dev_inst *sdi; | |
76 | struct dev_context *devc; | |
77 | int i; | |
78 | char name[8]; | |
79 | ||
80 | /* Initialize private device context. */ | |
81 | devc = g_malloc0(sizeof(struct dev_context)); | |
82 | devc->model = model; | |
83 | devc->active_fpga_config = FPGA_NOCONF; | |
84 | devc->cfg_rle = TRUE; | |
85 | devc->samplerate = model->samplerates[0]; | |
86 | devc->channel_mask = (UINT64_C(1) << model->num_channels) - 1; | |
87 | ||
88 | /* Create sigrok device instance. */ | |
89 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
90 | sdi->status = SR_ST_INACTIVE; | |
91 | sdi->vendor = g_strdup(VENDOR_NAME); | |
92 | sdi->model = g_strdup(model->name); | |
93 | sdi->priv = devc; | |
94 | ||
95 | /* Generate list of logic channels. */ | |
96 | for (i = 0; i < model->num_channels; i++) { | |
97 | /* The LWLA series simply number channels from CH1 to CHxx. */ | |
98 | g_snprintf(name, sizeof(name), "CH%d", i + 1); | |
99 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, name); | |
100 | } | |
101 | ||
102 | return sdi; | |
103 | } | |
104 | ||
105 | /* Create a new device instance for a libusb device if it is a SysClk LWLA | |
106 | * device and also matches the connection specification. | |
107 | */ | |
108 | static struct sr_dev_inst *dev_inst_new_matching(GSList *conn_matches, | |
109 | libusb_device *dev) | |
110 | { | |
111 | GSList *node; | |
112 | struct sr_usb_dev_inst *usb; | |
113 | const struct model_info *model; | |
114 | struct sr_dev_inst *sdi; | |
115 | struct libusb_device_descriptor des; | |
116 | int bus, address; | |
117 | unsigned int vid, pid; | |
118 | int ret; | |
119 | ||
120 | bus = libusb_get_bus_number(dev); | |
121 | address = libusb_get_device_address(dev); | |
122 | ||
123 | for (node = conn_matches; node != NULL; node = node->next) { | |
124 | usb = node->data; | |
125 | if (usb && usb->bus == bus && usb->address == address) | |
126 | break; /* found */ | |
127 | } | |
128 | if (conn_matches && !node) | |
129 | return NULL; /* no match */ | |
130 | ||
131 | ret = libusb_get_device_descriptor(dev, &des); | |
132 | if (ret != 0) { | |
133 | sr_err("Failed to get USB device descriptor: %s.", | |
134 | libusb_error_name(ret)); | |
135 | return NULL; | |
136 | } | |
137 | vid = des.idVendor; | |
138 | pid = des.idProduct; | |
139 | ||
140 | /* Create sigrok device instance. */ | |
141 | if (vid == USB_VID_SYSCLK && pid == USB_PID_LWLA1016) { | |
142 | model = &lwla1016_info; | |
143 | } else if (vid == USB_VID_SYSCLK && pid == USB_PID_LWLA1034) { | |
144 | model = &lwla1034_info; | |
145 | } else { | |
146 | if (conn_matches) | |
147 | sr_warn("USB device %d.%d (%04x:%04x) is not a" | |
148 | " SysClk LWLA.", bus, address, vid, pid); | |
149 | return NULL; | |
150 | } | |
151 | sdi = dev_inst_new(model); | |
152 | ||
153 | sdi->inst_type = SR_INST_USB; | |
154 | sdi->conn = sr_usb_dev_inst_new(bus, address, NULL); | |
155 | ||
156 | return sdi; | |
157 | } | |
158 | ||
159 | /* Scan for SysClk LWLA devices and create a device instance for each one. | |
160 | */ | |
161 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
162 | { | |
163 | GSList *conn_devices, *devices, *node; | |
164 | struct drv_context *drvc; | |
165 | struct sr_dev_inst *sdi; | |
166 | struct sr_config *src; | |
167 | const char *conn; | |
168 | libusb_device **devlist; | |
169 | ssize_t num_devs, i; | |
170 | ||
171 | drvc = di->context; | |
172 | conn = NULL; | |
173 | conn_devices = NULL; | |
174 | devices = NULL; | |
175 | ||
176 | for (node = options; node != NULL; node = node->next) { | |
177 | src = node->data; | |
178 | if (src->key == SR_CONF_CONN) { | |
179 | conn = g_variant_get_string(src->data, NULL); | |
180 | break; | |
181 | } | |
182 | } | |
183 | if (conn) { | |
184 | /* Find devices matching the connection specification. */ | |
185 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
186 | } | |
187 | ||
188 | /* List all libusb devices. */ | |
189 | num_devs = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
190 | if (num_devs < 0) { | |
191 | sr_err("Failed to list USB devices: %s.", | |
192 | libusb_error_name(num_devs)); | |
193 | g_slist_free_full(conn_devices, | |
194 | (GDestroyNotify)&sr_usb_dev_inst_free); | |
195 | return NULL; | |
196 | } | |
197 | ||
198 | /* Scan the USB device list for matching LWLA devices. */ | |
199 | for (i = 0; i < num_devs; i++) { | |
200 | sdi = dev_inst_new_matching(conn_devices, devlist[i]); | |
201 | if (!sdi) | |
202 | continue; /* no match */ | |
203 | ||
204 | /* Register device instance with driver. */ | |
205 | sdi->driver = di; | |
206 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
207 | devices = g_slist_append(devices, sdi); | |
208 | } | |
209 | ||
210 | libusb_free_device_list(devlist, 1); | |
211 | g_slist_free_full(conn_devices, (GDestroyNotify)&sr_usb_dev_inst_free); | |
212 | ||
213 | return devices; | |
214 | } | |
215 | ||
216 | /* Return the list of devices found during scan. | |
217 | */ | |
218 | static GSList *dev_list(const struct sr_dev_driver *di) | |
219 | { | |
220 | struct drv_context *drvc; | |
221 | ||
222 | drvc = di->context; | |
223 | ||
224 | return drvc->instances; | |
225 | } | |
226 | ||
227 | /* Destroy the private device context. | |
228 | */ | |
229 | static void clear_dev_context(void *priv) | |
230 | { | |
231 | struct dev_context *devc; | |
232 | ||
233 | devc = priv; | |
234 | ||
235 | if (devc->acquisition) { | |
236 | sr_err("Cannot clear device context during acquisition!"); | |
237 | return; /* leak and pray */ | |
238 | } | |
239 | sr_dbg("Device context cleared."); | |
240 | ||
241 | g_free(devc); | |
242 | } | |
243 | ||
244 | /* Destroy all device instances. | |
245 | */ | |
246 | static int dev_clear(const struct sr_dev_driver *di) | |
247 | { | |
248 | return std_dev_clear(di, &clear_dev_context); | |
249 | } | |
250 | ||
251 | /* Open and initialize device. | |
252 | */ | |
253 | static int dev_open(struct sr_dev_inst *sdi) | |
254 | { | |
255 | struct drv_context *drvc; | |
256 | struct dev_context *devc; | |
257 | struct sr_usb_dev_inst *usb; | |
258 | int ret; | |
259 | ||
260 | drvc = sdi->driver->context; | |
261 | devc = sdi->priv; | |
262 | usb = sdi->conn; | |
263 | ||
264 | if (!drvc) { | |
265 | sr_err("Driver was not initialized."); | |
266 | return SR_ERR; | |
267 | } | |
268 | if (sdi->status != SR_ST_INACTIVE) { | |
269 | sr_err("Device already open."); | |
270 | return SR_ERR; | |
271 | } | |
272 | ||
273 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); | |
274 | if (ret != SR_OK) | |
275 | return ret; | |
276 | ||
277 | ret = libusb_set_configuration(usb->devhdl, USB_CONFIG); | |
278 | if (ret != 0) { | |
279 | sr_err("Failed to set USB configuration: %s.", | |
280 | libusb_error_name(ret)); | |
281 | sr_usb_close(usb); | |
282 | return SR_ERR; | |
283 | } | |
284 | ||
285 | ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
286 | if (ret < 0) { | |
287 | sr_err("Failed to claim interface: %s.", | |
288 | libusb_error_name(ret)); | |
289 | sr_usb_close(usb); | |
290 | return SR_ERR; | |
291 | } | |
292 | ||
293 | sdi->status = SR_ST_ACTIVE; | |
294 | ||
295 | devc->active_fpga_config = FPGA_NOCONF; | |
296 | devc->state = STATE_IDLE; | |
297 | ||
298 | ret = (*devc->model->apply_fpga_config)(sdi); | |
299 | ||
300 | if (ret == SR_OK) | |
301 | ret = (*devc->model->device_init_check)(sdi); | |
302 | ||
303 | if (ret != SR_OK) { | |
304 | sdi->status = SR_ST_INACTIVE; | |
305 | sr_usb_close(usb); | |
306 | } | |
307 | return ret; | |
308 | } | |
309 | ||
310 | /* Shutdown and close device. | |
311 | */ | |
312 | static int dev_close(struct sr_dev_inst *sdi) | |
313 | { | |
314 | struct drv_context *drvc; | |
315 | struct dev_context *devc; | |
316 | struct sr_usb_dev_inst *usb; | |
317 | int ret; | |
318 | ||
319 | drvc = sdi->driver->context; | |
320 | devc = sdi->priv; | |
321 | usb = sdi->conn; | |
322 | ||
323 | if (!drvc) { | |
324 | sr_err("Driver was not initialized."); | |
325 | return SR_ERR; | |
326 | } | |
327 | if (sdi->status == SR_ST_INACTIVE) { | |
328 | sr_dbg("Device already closed."); | |
329 | return SR_OK; | |
330 | } | |
331 | if (devc->acquisition) { | |
332 | sr_err("Cannot close device during acquisition!"); | |
333 | /* Request stop, leak handle, and prepare for the worst. */ | |
334 | devc->cancel_requested = TRUE; | |
335 | return SR_ERR_BUG; | |
336 | } | |
337 | ||
338 | sdi->status = SR_ST_INACTIVE; | |
339 | ||
340 | /* Download of the shutdown bitstream, if any. */ | |
341 | ret = (*devc->model->apply_fpga_config)(sdi); | |
342 | if (ret != SR_OK) | |
343 | sr_warn("Unable to shut down device."); | |
344 | ||
345 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
346 | sr_usb_close(usb); | |
347 | ||
348 | return ret; | |
349 | } | |
350 | ||
351 | /* Check whether the device options contain a specific key. | |
352 | * Also match against get/set/list bits if specified. | |
353 | */ | |
354 | static int has_devopt(const struct model_info *model, uint32_t key) | |
355 | { | |
356 | unsigned int i; | |
357 | ||
358 | for (i = 0; i < model->num_devopts; i++) { | |
359 | if ((model->devopts[i] & (SR_CONF_MASK | key)) == key) | |
360 | return TRUE; | |
361 | } | |
362 | return FALSE; | |
363 | } | |
364 | ||
365 | /* Read device configuration setting. | |
366 | */ | |
367 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
368 | const struct sr_channel_group *cg) | |
369 | { | |
370 | struct dev_context *devc; | |
371 | unsigned int idx; | |
372 | ||
373 | (void)cg; | |
374 | ||
375 | if (!sdi) | |
376 | return SR_ERR_ARG; | |
377 | ||
378 | devc = sdi->priv; | |
379 | ||
380 | if (!has_devopt(devc->model, key | SR_CONF_GET)) | |
381 | return SR_ERR_NA; | |
382 | ||
383 | switch (key) { | |
384 | case SR_CONF_SAMPLERATE: | |
385 | *data = g_variant_new_uint64(devc->samplerate); | |
386 | break; | |
387 | case SR_CONF_LIMIT_MSEC: | |
388 | *data = g_variant_new_uint64(devc->limit_msec); | |
389 | break; | |
390 | case SR_CONF_LIMIT_SAMPLES: | |
391 | *data = g_variant_new_uint64(devc->limit_samples); | |
392 | break; | |
393 | case SR_CONF_RLE: | |
394 | *data = g_variant_new_boolean(devc->cfg_rle); | |
395 | break; | |
396 | case SR_CONF_EXTERNAL_CLOCK: | |
397 | *data = g_variant_new_boolean(devc->cfg_clock_source | |
398 | == CLOCK_EXT_CLK); | |
399 | break; | |
400 | case SR_CONF_CLOCK_EDGE: | |
401 | idx = devc->cfg_clock_edge; | |
402 | if (idx >= ARRAY_SIZE(signal_edge_names)) | |
403 | return SR_ERR_BUG; | |
404 | *data = g_variant_new_string(signal_edge_names[idx]); | |
405 | break; | |
406 | case SR_CONF_TRIGGER_SOURCE: | |
407 | idx = devc->cfg_trigger_source; | |
408 | if (idx >= ARRAY_SIZE(trigger_source_names)) | |
409 | return SR_ERR_BUG; | |
410 | *data = g_variant_new_string(trigger_source_names[idx]); | |
411 | break; | |
412 | case SR_CONF_TRIGGER_SLOPE: | |
413 | idx = devc->cfg_trigger_slope; | |
414 | if (idx >= ARRAY_SIZE(signal_edge_names)) | |
415 | return SR_ERR_BUG; | |
416 | *data = g_variant_new_string(signal_edge_names[idx]); | |
417 | break; | |
418 | default: | |
419 | /* Must not happen for a key listed in devopts. */ | |
420 | return SR_ERR_BUG; | |
421 | } | |
422 | ||
423 | return SR_OK; | |
424 | } | |
425 | ||
426 | /* Helper for mapping a string-typed configuration value to an index | |
427 | * within a table of possible values. | |
428 | */ | |
429 | static int lookup_index(GVariant *value, const char *const *table, int len) | |
430 | { | |
431 | const char *entry; | |
432 | int i; | |
433 | ||
434 | entry = g_variant_get_string(value, NULL); | |
435 | if (!entry) | |
436 | return -1; | |
437 | ||
438 | /* Linear search is fine for very small tables. */ | |
439 | for (i = 0; i < len; ++i) { | |
440 | if (strcmp(entry, table[i]) == 0) | |
441 | return i; | |
442 | } | |
443 | return -1; | |
444 | } | |
445 | ||
446 | /* Write device configuration setting. | |
447 | */ | |
448 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
449 | const struct sr_channel_group *cg) | |
450 | { | |
451 | uint64_t value; | |
452 | struct dev_context *devc; | |
453 | int idx; | |
454 | ||
455 | (void)cg; | |
456 | ||
457 | if (!sdi) | |
458 | return SR_ERR_ARG; | |
459 | ||
460 | devc = sdi->priv; | |
461 | ||
462 | if (!has_devopt(devc->model, key | SR_CONF_SET)) | |
463 | return SR_ERR_NA; | |
464 | ||
465 | switch (key) { | |
466 | case SR_CONF_SAMPLERATE: | |
467 | value = g_variant_get_uint64(data); | |
468 | if (value < devc->model->samplerates[devc->model->num_samplerates - 1] | |
469 | || value > devc->model->samplerates[0]) | |
470 | return SR_ERR_SAMPLERATE; | |
471 | devc->samplerate = value; | |
472 | break; | |
473 | case SR_CONF_LIMIT_MSEC: | |
474 | value = g_variant_get_uint64(data); | |
475 | if (value > MAX_LIMIT_MSEC) | |
476 | return SR_ERR_ARG; | |
477 | devc->limit_msec = value; | |
478 | break; | |
479 | case SR_CONF_LIMIT_SAMPLES: | |
480 | value = g_variant_get_uint64(data); | |
481 | if (value > MAX_LIMIT_SAMPLES) | |
482 | return SR_ERR_ARG; | |
483 | devc->limit_samples = value; | |
484 | break; | |
485 | case SR_CONF_RLE: | |
486 | devc->cfg_rle = g_variant_get_boolean(data); | |
487 | break; | |
488 | case SR_CONF_EXTERNAL_CLOCK: | |
489 | devc->cfg_clock_source = (g_variant_get_boolean(data)) | |
490 | ? CLOCK_EXT_CLK : CLOCK_INTERNAL; | |
491 | break; | |
492 | case SR_CONF_CLOCK_EDGE: | |
493 | idx = lookup_index(data, signal_edge_names, | |
494 | ARRAY_SIZE(signal_edge_names)); | |
495 | if (idx < 0) | |
496 | return SR_ERR_ARG; | |
497 | devc->cfg_clock_edge = idx; | |
498 | break; | |
499 | case SR_CONF_TRIGGER_SOURCE: | |
500 | idx = lookup_index(data, trigger_source_names, | |
501 | ARRAY_SIZE(trigger_source_names)); | |
502 | if (idx < 0) | |
503 | return SR_ERR_ARG; | |
504 | devc->cfg_trigger_source = idx; | |
505 | break; | |
506 | case SR_CONF_TRIGGER_SLOPE: | |
507 | idx = lookup_index(data, signal_edge_names, | |
508 | ARRAY_SIZE(signal_edge_names)); | |
509 | if (idx < 0) | |
510 | return SR_ERR_ARG; | |
511 | devc->cfg_trigger_slope = idx; | |
512 | break; | |
513 | default: | |
514 | /* Must not happen for a key listed in devopts. */ | |
515 | return SR_ERR_BUG; | |
516 | } | |
517 | ||
518 | return SR_OK; | |
519 | } | |
520 | ||
521 | /* Apply channel configuration change. | |
522 | */ | |
523 | static int config_channel_set(const struct sr_dev_inst *sdi, | |
524 | struct sr_channel *ch, unsigned int changes) | |
525 | { | |
526 | uint64_t channel_bit; | |
527 | struct dev_context *devc; | |
528 | ||
529 | if (!sdi) | |
530 | return SR_ERR_ARG; | |
531 | ||
532 | devc = sdi->priv; | |
533 | ||
534 | if (ch->index < 0 || ch->index >= devc->model->num_channels) { | |
535 | sr_err("Channel index %d out of range.", ch->index); | |
536 | return SR_ERR_BUG; | |
537 | } | |
538 | ||
539 | if ((changes & SR_CHANNEL_SET_ENABLED) != 0) { | |
540 | channel_bit = UINT64_C(1) << ch->index; | |
541 | ||
542 | /* Enable or disable logic input for this channel. */ | |
543 | if (ch->enabled) | |
544 | devc->channel_mask |= channel_bit; | |
545 | else | |
546 | devc->channel_mask &= ~channel_bit; | |
547 | } | |
548 | ||
549 | return SR_OK; | |
550 | } | |
551 | ||
552 | /* Derive trigger masks from the session's trigger configuration. | |
553 | */ | |
554 | static int prepare_trigger_masks(const struct sr_dev_inst *sdi) | |
555 | { | |
556 | uint64_t trigger_mask; | |
557 | uint64_t trigger_values; | |
558 | uint64_t trigger_edge_mask; | |
559 | uint64_t channel_bit; | |
560 | struct dev_context *devc; | |
561 | struct sr_trigger *trigger; | |
562 | struct sr_trigger_stage *stage; | |
563 | struct sr_trigger_match *match; | |
564 | const GSList *node; | |
565 | int idx; | |
566 | ||
567 | devc = sdi->priv; | |
568 | ||
569 | trigger = sr_session_trigger_get(sdi->session); | |
570 | if (!trigger || !trigger->stages) | |
571 | return SR_OK; | |
572 | ||
573 | if (trigger->stages->next) { | |
574 | sr_err("This device only supports 1 trigger stage."); | |
575 | return SR_ERR_ARG; | |
576 | } | |
577 | stage = trigger->stages->data; | |
578 | ||
579 | trigger_mask = 0; | |
580 | trigger_values = 0; | |
581 | trigger_edge_mask = 0; | |
582 | ||
583 | for (node = stage->matches; node; node = node->next) { | |
584 | match = node->data; | |
585 | ||
586 | if (!match->channel->enabled) | |
587 | continue; /* ignore disabled channel */ | |
588 | ||
589 | idx = match->channel->index; | |
590 | ||
591 | if (idx < 0 || idx >= devc->model->num_channels) { | |
592 | sr_err("Channel index %d out of range.", idx); | |
593 | return SR_ERR_BUG; /* should not happen */ | |
594 | } | |
595 | channel_bit = UINT64_C(1) << idx; | |
596 | trigger_mask |= channel_bit; | |
597 | ||
598 | switch (match->match) { | |
599 | case SR_TRIGGER_ZERO: | |
600 | break; | |
601 | case SR_TRIGGER_ONE: | |
602 | trigger_values |= channel_bit; | |
603 | break; | |
604 | case SR_TRIGGER_RISING: | |
605 | trigger_values |= channel_bit; | |
606 | /* Fall through for edge mask. */ | |
607 | case SR_TRIGGER_FALLING: | |
608 | trigger_edge_mask |= channel_bit; | |
609 | break; | |
610 | default: | |
611 | sr_err("Unsupported trigger match for CH%d.", idx + 1); | |
612 | return SR_ERR_ARG; | |
613 | } | |
614 | } | |
615 | devc->trigger_mask = trigger_mask; | |
616 | devc->trigger_values = trigger_values; | |
617 | devc->trigger_edge_mask = trigger_edge_mask; | |
618 | ||
619 | return SR_OK; | |
620 | } | |
621 | ||
622 | /* Apply current device configuration to the hardware. | |
623 | */ | |
624 | static int config_commit(const struct sr_dev_inst *sdi) | |
625 | { | |
626 | struct dev_context *devc; | |
627 | int ret; | |
628 | ||
629 | devc = sdi->priv; | |
630 | ||
631 | if (sdi->status != SR_ST_ACTIVE) | |
632 | return SR_ERR_DEV_CLOSED; | |
633 | ||
634 | if (devc->acquisition) { | |
635 | sr_err("Acquisition still in progress?"); | |
636 | return SR_ERR; | |
637 | } | |
638 | ||
639 | ret = prepare_trigger_masks(sdi); | |
640 | if (ret != SR_OK) | |
641 | return ret; | |
642 | ||
643 | ret = (*devc->model->apply_fpga_config)(sdi); | |
644 | if (ret != SR_OK) { | |
645 | sr_err("Failed to apply FPGA configuration."); | |
646 | return ret; | |
647 | } | |
648 | ||
649 | return SR_OK; | |
650 | } | |
651 | ||
652 | /* List available choices for a configuration setting. | |
653 | */ | |
654 | static int config_list(uint32_t key, GVariant **data, | |
655 | const struct sr_dev_inst *sdi, | |
656 | const struct sr_channel_group *cg) | |
657 | { | |
658 | struct dev_context *devc; | |
659 | GVariant *gvar; | |
660 | GVariantBuilder gvb; | |
661 | ||
662 | (void)cg; | |
663 | ||
664 | if (key == SR_CONF_SCAN_OPTIONS) { | |
665 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
666 | scanopts, ARRAY_SIZE(scanopts), | |
667 | sizeof(scanopts[0])); | |
668 | return SR_OK; | |
669 | } | |
670 | if (!sdi) { | |
671 | if (key != SR_CONF_DEVICE_OPTIONS) | |
672 | return SR_ERR_ARG; | |
673 | ||
674 | /* List driver capabilities. */ | |
675 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
676 | drvopts, ARRAY_SIZE(drvopts), | |
677 | sizeof(drvopts[0])); | |
678 | return SR_OK; | |
679 | } | |
680 | ||
681 | devc = sdi->priv; | |
682 | ||
683 | /* List the model's device options. */ | |
684 | if (key == SR_CONF_DEVICE_OPTIONS) { | |
685 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
686 | devc->model->devopts, | |
687 | devc->model->num_devopts, | |
688 | sizeof(devc->model->devopts[0])); | |
689 | return SR_OK; | |
690 | } | |
691 | ||
692 | if (!has_devopt(devc->model, key | SR_CONF_LIST)) | |
693 | return SR_ERR_NA; | |
694 | ||
695 | switch (key) { | |
696 | case SR_CONF_SAMPLERATE: | |
697 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_VARDICT); | |
698 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
699 | devc->model->samplerates, | |
700 | devc->model->num_samplerates, | |
701 | sizeof(devc->model->samplerates[0])); | |
702 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
703 | *data = g_variant_builder_end(&gvb); | |
704 | break; | |
705 | case SR_CONF_TRIGGER_MATCH: | |
706 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
707 | trigger_matches, | |
708 | ARRAY_SIZE(trigger_matches), | |
709 | sizeof(trigger_matches[0])); | |
710 | break; | |
711 | case SR_CONF_TRIGGER_SOURCE: | |
712 | *data = g_variant_new_strv(trigger_source_names, | |
713 | ARRAY_SIZE(trigger_source_names)); | |
714 | break; | |
715 | case SR_CONF_TRIGGER_SLOPE: | |
716 | case SR_CONF_CLOCK_EDGE: | |
717 | *data = g_variant_new_strv(signal_edge_names, | |
718 | ARRAY_SIZE(signal_edge_names)); | |
719 | break; | |
720 | default: | |
721 | /* Must not happen for a key listed in devopts. */ | |
722 | return SR_ERR_BUG; | |
723 | } | |
724 | ||
725 | return SR_OK; | |
726 | } | |
727 | ||
728 | /* Set up the device hardware to begin capturing samples as soon as the | |
729 | * configured trigger conditions are met, or immediately if no triggers | |
730 | * are configured. | |
731 | */ | |
732 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
733 | { | |
734 | (void)cb_data; | |
735 | ||
736 | if (sdi->status != SR_ST_ACTIVE) | |
737 | return SR_ERR_DEV_CLOSED; | |
738 | ||
739 | sr_info("Starting acquisition."); | |
740 | ||
741 | return lwla_start_acquisition(sdi); | |
742 | } | |
743 | ||
744 | /* Request that a running capture operation be stopped. | |
745 | */ | |
746 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
747 | { | |
748 | struct dev_context *devc; | |
749 | ||
750 | (void)cb_data; | |
751 | devc = sdi->priv; | |
752 | ||
753 | if (sdi->status != SR_ST_ACTIVE) | |
754 | return SR_ERR_DEV_CLOSED; | |
755 | ||
756 | if (devc->state != STATE_IDLE && !devc->cancel_requested) { | |
757 | devc->cancel_requested = TRUE; | |
758 | sr_dbg("Stopping acquisition."); | |
759 | } | |
760 | return SR_OK; | |
761 | } | |
762 | ||
763 | /* SysClk LWLA driver descriptor. | |
764 | */ | |
765 | SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info = { | |
766 | .name = "sysclk-lwla", | |
767 | .longname = "SysClk LWLA series", | |
768 | .api_version = 1, | |
769 | .init = init, | |
770 | .cleanup = dev_clear, | |
771 | .scan = scan, | |
772 | .dev_list = dev_list, | |
773 | .dev_clear = dev_clear, | |
774 | .config_get = config_get, | |
775 | .config_set = config_set, | |
776 | .config_channel_set = config_channel_set, | |
777 | .config_commit = config_commit, | |
778 | .config_list = config_list, | |
779 | .dev_open = dev_open, | |
780 | .dev_close = dev_close, | |
781 | .dev_acquisition_start = dev_acquisition_start, | |
782 | .dev_acquisition_stop = dev_acquisition_stop, | |
783 | .context = NULL, | |
784 | }; |