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aeaad0b0 DE |
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 | ||
6ec6c43b | 20 | #include <config.h> |
5874e88d DE |
21 | #include <glib.h> |
22 | #include <libusb.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
c1aae900 | 25 | #include <libsigrok/libsigrok.h> |
407b6e2c | 26 | #include <libsigrok-internal.h> |
515ab088 | 27 | #include "protocol.h" |
5874e88d | 28 | |
a0e0bb41 | 29 | static const uint32_t scanopts[] = { |
99c76642 DE |
30 | SR_CONF_CONN, |
31 | }; | |
32 | ||
be64f90b | 33 | static const uint32_t drvopts[] = { |
5874e88d | 34 | SR_CONF_LOGIC_ANALYZER, |
5874e88d DE |
35 | }; |
36 | ||
bbe7e48a BV |
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 | ||
be64f90b DE |
44 | static const char *const trigger_source_names[] = { |
45 | [TRIGGER_CHANNELS] = "CH", | |
46 | [TRIGGER_EXT_TRG] = "TRG", | |
5874e88d | 47 | }; |
aeaad0b0 | 48 | |
be64f90b DE |
49 | static const char *const signal_edge_names[] = { |
50 | [EDGE_POSITIVE] = "r", | |
51 | [EDGE_NEGATIVE] = "f", | |
52 | }; | |
e6e54bd2 | 53 | |
be64f90b | 54 | static struct sr_dev_inst *dev_inst_new(const struct model_info *model) |
43db3436 DE |
55 | { |
56 | struct sr_dev_inst *sdi; | |
57 | struct dev_context *devc; | |
5e23fcab ML |
58 | int i; |
59 | char name[8]; | |
43db3436 | 60 | |
f57d8ffe | 61 | devc = g_malloc0(sizeof(struct dev_context)); |
be64f90b DE |
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; | |
43db3436 | 67 | |
aac29cc1 | 68 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
69 | sdi->status = SR_ST_INACTIVE; |
70 | sdi->vendor = g_strdup(VENDOR_NAME); | |
be64f90b | 71 | sdi->model = g_strdup(model->name); |
43db3436 | 72 | sdi->priv = devc; |
be64f90b | 73 | |
be64f90b | 74 | for (i = 0; i < model->num_channels; i++) { |
fe473123 DE |
75 | g_snprintf(name, sizeof(name), "CH%d", i + 1); |
76 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, name); | |
5e23fcab | 77 | } |
43db3436 DE |
78 | |
79 | return sdi; | |
80 | } | |
81 | ||
be64f90b DE |
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; | |
d64b5f43 | 93 | int bus, address, ret; |
be64f90b | 94 | unsigned int vid, pid; |
be64f90b DE |
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 | ||
4f840ce9 | 135 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
aeaad0b0 | 136 | { |
be64f90b | 137 | GSList *conn_devices, *devices, *node; |
aeaad0b0 | 138 | struct drv_context *drvc; |
5874e88d | 139 | struct sr_dev_inst *sdi; |
7ebe9b9e DE |
140 | struct sr_config *src; |
141 | const char *conn; | |
be64f90b DE |
142 | libusb_device **devlist; |
143 | ssize_t num_devs, i; | |
aeaad0b0 | 144 | |
41812aca | 145 | drvc = di->context; |
be64f90b DE |
146 | conn = NULL; |
147 | conn_devices = NULL; | |
148 | devices = NULL; | |
5874e88d | 149 | |
7ebe9b9e DE |
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 | } | |
be64f90b DE |
157 | if (conn) { |
158 | /* Find devices matching the connection specification. */ | |
159 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
160 | } | |
5874e88d | 161 | |
be64f90b DE |
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 | } | |
5874e88d | 171 | |
be64f90b DE |
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 */ | |
5874e88d | 177 | |
43db3436 | 178 | /* Register device instance with driver. */ |
5874e88d DE |
179 | devices = g_slist_append(devices, sdi); |
180 | } | |
aeaad0b0 | 181 | |
be64f90b DE |
182 | libusb_free_device_list(devlist, 1); |
183 | g_slist_free_full(conn_devices, (GDestroyNotify)&sr_usb_dev_inst_free); | |
aeaad0b0 | 184 | |
15a5bfe4 | 185 | return std_scan_complete(di, devices); |
aeaad0b0 DE |
186 | } |
187 | ||
93ed0241 DE |
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 | { | |
d64b5f43 | 194 | int drained, xfer_len, ret; |
93ed0241 | 195 | unsigned char buf[512]; |
93ed0241 DE |
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, | |
b3cfc6e9 | 202 | buf, sizeof(buf), &xfer_len, |
93ed0241 DE |
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 | } | |
d64b5f43 | 217 | |
93ed0241 DE |
218 | return SR_OK; |
219 | } | |
220 | ||
aeaad0b0 DE |
221 | static int dev_open(struct sr_dev_inst *sdi) |
222 | { | |
5874e88d | 223 | struct drv_context *drvc; |
be64f90b | 224 | struct dev_context *devc; |
5874e88d | 225 | struct sr_usb_dev_inst *usb; |
d64b5f43 | 226 | int i, ret; |
aeaad0b0 | 227 | |
ce19d4c6 | 228 | drvc = sdi->driver->context; |
be64f90b DE |
229 | devc = sdi->priv; |
230 | usb = sdi->conn; | |
aeaad0b0 | 231 | |
e35a4592 DE |
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 | } | |
ad6181e2 | 245 | |
e35a4592 DE |
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 | } | |
be64f90b | 253 | |
e35a4592 DE |
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); | |
93ed0241 | 261 | |
e35a4592 DE |
262 | devc->active_fpga_config = FPGA_NOCONF; |
263 | devc->short_transfer_quirk = FALSE; | |
264 | devc->state = STATE_IDLE; | |
be64f90b | 265 | |
e35a4592 | 266 | ret = (*devc->model->apply_fpga_config)(sdi); |
be64f90b | 267 | |
e35a4592 DE |
268 | if (ret == SR_OK) |
269 | ret = (*devc->model->device_init_check)(sdi); | |
270 | if (ret == SR_OK) | |
271 | break; | |
be64f90b | 272 | |
e35a4592 | 273 | /* Rinse and repeat. */ |
be64f90b | 274 | sr_usb_close(usb); |
c81069b3 | 275 | } |
e35a4592 DE |
276 | |
277 | if (ret == SR_OK && devc->short_transfer_quirk) | |
78648577 DE |
278 | sr_warn("Short transfer quirk detected! " |
279 | "Memory reads will be slow."); | |
e35a4592 | 280 | return ret; |
aeaad0b0 DE |
281 | } |
282 | ||
283 | static int dev_close(struct sr_dev_inst *sdi) | |
284 | { | |
c81069b3 | 285 | struct dev_context *devc; |
be64f90b | 286 | struct sr_usb_dev_inst *usb; |
c81069b3 | 287 | int ret; |
5874e88d | 288 | |
be64f90b DE |
289 | devc = sdi->priv; |
290 | usb = sdi->conn; | |
291 | ||
be64f90b DE |
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 | ||
be64f90b DE |
299 | /* Download of the shutdown bitstream, if any. */ |
300 | ret = (*devc->model->apply_fpga_config)(sdi); | |
c81069b3 | 301 | if (ret != SR_OK) |
be64f90b | 302 | sr_warn("Unable to shut down device."); |
5874e88d DE |
303 | |
304 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
f1ba6b4b | 305 | |
c81069b3 | 306 | sr_usb_close(usb); |
5874e88d | 307 | |
f1ba6b4b | 308 | return SR_OK; |
aeaad0b0 DE |
309 | } |
310 | ||
be64f90b DE |
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) | |
aeaad0b0 | 315 | { |
be64f90b DE |
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 | } | |
d64b5f43 | 322 | |
be64f90b | 323 | return FALSE; |
aeaad0b0 DE |
324 | } |
325 | ||
584560f1 | 326 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 327 | const struct sr_channel_group *cg) |
aeaad0b0 | 328 | { |
5874e88d | 329 | struct dev_context *devc; |
7ed80817 | 330 | unsigned int idx; |
aeaad0b0 | 331 | |
53b4680f | 332 | (void)cg; |
aeaad0b0 | 333 | |
5874e88d DE |
334 | if (!sdi) |
335 | return SR_ERR_ARG; | |
336 | ||
337 | devc = sdi->priv; | |
338 | ||
be64f90b DE |
339 | if (!has_devopt(devc->model, key | SR_CONF_GET)) |
340 | return SR_ERR_NA; | |
341 | ||
aeaad0b0 | 342 | switch (key) { |
5874e88d DE |
343 | case SR_CONF_SAMPLERATE: |
344 | *data = g_variant_new_uint64(devc->samplerate); | |
345 | break; | |
29d58767 DE |
346 | case SR_CONF_LIMIT_MSEC: |
347 | *data = g_variant_new_uint64(devc->limit_msec); | |
348 | break; | |
5874e88d DE |
349 | case SR_CONF_LIMIT_SAMPLES: |
350 | *data = g_variant_new_uint64(devc->limit_samples); | |
351 | break; | |
be64f90b DE |
352 | case SR_CONF_RLE: |
353 | *data = g_variant_new_boolean(devc->cfg_rle); | |
354 | break; | |
5874e88d | 355 | case SR_CONF_EXTERNAL_CLOCK: |
6358f0a9 DE |
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; | |
ce3ecb70 | 361 | if (idx >= ARRAY_SIZE(signal_edge_names)) |
6358f0a9 DE |
362 | return SR_ERR_BUG; |
363 | *data = g_variant_new_string(signal_edge_names[idx]); | |
5874e88d | 364 | break; |
e6e54bd2 DE |
365 | case SR_CONF_TRIGGER_SOURCE: |
366 | idx = devc->cfg_trigger_source; | |
ce3ecb70 | 367 | if (idx >= ARRAY_SIZE(trigger_source_names)) |
e6e54bd2 DE |
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; | |
ce3ecb70 | 373 | if (idx >= ARRAY_SIZE(signal_edge_names)) |
e6e54bd2 | 374 | return SR_ERR_BUG; |
6358f0a9 | 375 | *data = g_variant_new_string(signal_edge_names[idx]); |
e6e54bd2 | 376 | break; |
aeaad0b0 | 377 | default: |
be64f90b DE |
378 | /* Must not happen for a key listed in devopts. */ |
379 | return SR_ERR_BUG; | |
aeaad0b0 DE |
380 | } |
381 | ||
5874e88d | 382 | return SR_OK; |
aeaad0b0 DE |
383 | } |
384 | ||
e6e54bd2 DE |
385 | /* Helper for mapping a string-typed configuration value to an index |
386 | * within a table of possible values. | |
387 | */ | |
388 | static int lookup_index(GVariant *value, const char *const *table, int len) | |
389 | { | |
390 | const char *entry; | |
391 | int i; | |
392 | ||
393 | entry = g_variant_get_string(value, NULL); | |
394 | if (!entry) | |
395 | return -1; | |
396 | ||
397 | /* Linear search is fine for very small tables. */ | |
0a1f7b09 | 398 | for (i = 0; i < len; i++) { |
e6e54bd2 DE |
399 | if (strcmp(entry, table[i]) == 0) |
400 | return i; | |
401 | } | |
d64b5f43 | 402 | |
e6e54bd2 DE |
403 | return -1; |
404 | } | |
405 | ||
584560f1 | 406 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 407 | const struct sr_channel_group *cg) |
aeaad0b0 | 408 | { |
29d58767 | 409 | uint64_t value; |
5874e88d | 410 | struct dev_context *devc; |
e6e54bd2 | 411 | int idx; |
aeaad0b0 | 412 | |
53b4680f | 413 | (void)cg; |
aeaad0b0 | 414 | |
be64f90b DE |
415 | if (!sdi) |
416 | return SR_ERR_ARG; | |
417 | ||
5874e88d | 418 | devc = sdi->priv; |
be64f90b DE |
419 | |
420 | if (!has_devopt(devc->model, key | SR_CONF_SET)) | |
421 | return SR_ERR_NA; | |
aeaad0b0 | 422 | |
aeaad0b0 | 423 | switch (key) { |
5874e88d | 424 | case SR_CONF_SAMPLERATE: |
29d58767 | 425 | value = g_variant_get_uint64(data); |
be64f90b DE |
426 | if (value < devc->model->samplerates[devc->model->num_samplerates - 1] |
427 | || value > devc->model->samplerates[0]) | |
5874e88d | 428 | return SR_ERR_SAMPLERATE; |
29d58767 DE |
429 | devc->samplerate = value; |
430 | break; | |
431 | case SR_CONF_LIMIT_MSEC: | |
432 | value = g_variant_get_uint64(data); | |
433 | if (value > MAX_LIMIT_MSEC) | |
434 | return SR_ERR_ARG; | |
435 | devc->limit_msec = value; | |
5874e88d DE |
436 | break; |
437 | case SR_CONF_LIMIT_SAMPLES: | |
29d58767 DE |
438 | value = g_variant_get_uint64(data); |
439 | if (value > MAX_LIMIT_SAMPLES) | |
440 | return SR_ERR_ARG; | |
441 | devc->limit_samples = value; | |
5874e88d | 442 | break; |
be64f90b DE |
443 | case SR_CONF_RLE: |
444 | devc->cfg_rle = g_variant_get_boolean(data); | |
445 | break; | |
5874e88d | 446 | case SR_CONF_EXTERNAL_CLOCK: |
6358f0a9 DE |
447 | devc->cfg_clock_source = (g_variant_get_boolean(data)) |
448 | ? CLOCK_EXT_CLK : CLOCK_INTERNAL; | |
449 | break; | |
450 | case SR_CONF_CLOCK_EDGE: | |
53012da6 | 451 | idx = lookup_index(data, ARRAY_AND_SIZE(signal_edge_names)); |
6358f0a9 DE |
452 | if (idx < 0) |
453 | return SR_ERR_ARG; | |
454 | devc->cfg_clock_edge = idx; | |
5874e88d | 455 | break; |
e6e54bd2 | 456 | case SR_CONF_TRIGGER_SOURCE: |
53012da6 | 457 | idx = lookup_index(data, ARRAY_AND_SIZE(trigger_source_names)); |
e6e54bd2 DE |
458 | if (idx < 0) |
459 | return SR_ERR_ARG; | |
460 | devc->cfg_trigger_source = idx; | |
461 | break; | |
462 | case SR_CONF_TRIGGER_SLOPE: | |
53012da6 | 463 | idx = lookup_index(data, ARRAY_AND_SIZE(signal_edge_names)); |
e6e54bd2 DE |
464 | if (idx < 0) |
465 | return SR_ERR_ARG; | |
466 | devc->cfg_trigger_slope = idx; | |
467 | break; | |
aeaad0b0 | 468 | default: |
be64f90b DE |
469 | /* Must not happen for a key listed in devopts. */ |
470 | return SR_ERR_BUG; | |
aeaad0b0 DE |
471 | } |
472 | ||
5874e88d | 473 | return SR_OK; |
aeaad0b0 DE |
474 | } |
475 | ||
f3ca73ed | 476 | static int config_channel_set(const struct sr_dev_inst *sdi, |
be64f90b | 477 | struct sr_channel *ch, unsigned int changes) |
43db3436 | 478 | { |
ba7dd8bb | 479 | uint64_t channel_bit; |
43db3436 DE |
480 | struct dev_context *devc; |
481 | ||
be64f90b DE |
482 | if (!sdi) |
483 | return SR_ERR_ARG; | |
484 | ||
43db3436 | 485 | devc = sdi->priv; |
43db3436 | 486 | |
be64f90b | 487 | if (ch->index < 0 || ch->index >= devc->model->num_channels) { |
ba7dd8bb | 488 | sr_err("Channel index %d out of range.", ch->index); |
43db3436 DE |
489 | return SR_ERR_BUG; |
490 | } | |
43db3436 | 491 | |
3f239f08 | 492 | if ((changes & SR_CHANNEL_SET_ENABLED) != 0) { |
be64f90b DE |
493 | channel_bit = UINT64_C(1) << ch->index; |
494 | ||
495 | /* Enable or disable logic input for this channel. */ | |
ba7dd8bb UH |
496 | if (ch->enabled) |
497 | devc->channel_mask |= channel_bit; | |
43db3436 | 498 | else |
ba7dd8bb | 499 | devc->channel_mask &= ~channel_bit; |
43db3436 DE |
500 | } |
501 | ||
43db3436 DE |
502 | return SR_OK; |
503 | } | |
504 | ||
ca314e06 | 505 | /* Derive trigger masks from the session's trigger configuration. */ |
225d3cb0 DE |
506 | static int prepare_trigger_masks(const struct sr_dev_inst *sdi) |
507 | { | |
d64b5f43 | 508 | uint64_t trigger_mask, trigger_values, trigger_edge_mask; |
09ffac33 | 509 | uint64_t level_bit, type_bit; |
225d3cb0 DE |
510 | struct dev_context *devc; |
511 | struct sr_trigger *trigger; | |
512 | struct sr_trigger_stage *stage; | |
513 | struct sr_trigger_match *match; | |
514 | const GSList *node; | |
be64f90b | 515 | int idx; |
09ffac33 | 516 | enum sr_trigger_matches trg; |
225d3cb0 DE |
517 | |
518 | devc = sdi->priv; | |
519 | ||
520 | trigger = sr_session_trigger_get(sdi->session); | |
521 | if (!trigger || !trigger->stages) | |
522 | return SR_OK; | |
523 | ||
524 | if (trigger->stages->next) { | |
525 | sr_err("This device only supports 1 trigger stage."); | |
526 | return SR_ERR_ARG; | |
527 | } | |
528 | stage = trigger->stages->data; | |
529 | ||
530 | trigger_mask = 0; | |
531 | trigger_values = 0; | |
532 | trigger_edge_mask = 0; | |
533 | ||
534 | for (node = stage->matches; node; node = node->next) { | |
535 | match = node->data; | |
536 | ||
537 | if (!match->channel->enabled) | |
d64b5f43 | 538 | continue; /* Ignore disabled channel. */ |
225d3cb0 | 539 | |
be64f90b | 540 | idx = match->channel->index; |
09ffac33 | 541 | trg = match->match; |
be64f90b DE |
542 | |
543 | if (idx < 0 || idx >= devc->model->num_channels) { | |
544 | sr_err("Channel index %d out of range.", idx); | |
d64b5f43 | 545 | return SR_ERR_BUG; /* Should not happen. */ |
be64f90b | 546 | } |
09ffac33 DE |
547 | if (trg != SR_TRIGGER_ZERO |
548 | && trg != SR_TRIGGER_ONE | |
549 | && trg != SR_TRIGGER_RISING | |
550 | && trg != SR_TRIGGER_FALLING) { | |
be64f90b | 551 | sr_err("Unsupported trigger match for CH%d.", idx + 1); |
225d3cb0 DE |
552 | return SR_ERR_ARG; |
553 | } | |
09ffac33 DE |
554 | level_bit = (trg == SR_TRIGGER_ONE |
555 | || trg == SR_TRIGGER_RISING) ? 1 : 0; | |
556 | type_bit = (trg == SR_TRIGGER_RISING | |
557 | || trg == SR_TRIGGER_FALLING) ? 1 : 0; | |
558 | ||
559 | trigger_mask |= UINT64_C(1) << idx; | |
560 | trigger_values |= level_bit << idx; | |
561 | trigger_edge_mask |= type_bit << idx; | |
225d3cb0 DE |
562 | } |
563 | devc->trigger_mask = trigger_mask; | |
564 | devc->trigger_values = trigger_values; | |
565 | devc->trigger_edge_mask = trigger_edge_mask; | |
566 | ||
567 | return SR_OK; | |
568 | } | |
569 | ||
ee38c8ba DE |
570 | static int config_commit(const struct sr_dev_inst *sdi) |
571 | { | |
225d3cb0 | 572 | struct dev_context *devc; |
be64f90b DE |
573 | int ret; |
574 | ||
575 | devc = sdi->priv; | |
225d3cb0 | 576 | |
225d3cb0 DE |
577 | if (devc->acquisition) { |
578 | sr_err("Acquisition still in progress?"); | |
ee38c8ba DE |
579 | return SR_ERR; |
580 | } | |
581 | ||
be64f90b DE |
582 | ret = prepare_trigger_masks(sdi); |
583 | if (ret != SR_OK) | |
584 | return ret; | |
585 | ||
586 | ret = (*devc->model->apply_fpga_config)(sdi); | |
587 | if (ret != SR_OK) { | |
588 | sr_err("Failed to apply FPGA configuration."); | |
589 | return ret; | |
590 | } | |
591 | ||
592 | return SR_OK; | |
ee38c8ba DE |
593 | } |
594 | ||
be64f90b DE |
595 | static int config_list(uint32_t key, GVariant **data, |
596 | const struct sr_dev_inst *sdi, | |
53b4680f | 597 | const struct sr_channel_group *cg) |
aeaad0b0 | 598 | { |
be64f90b | 599 | struct dev_context *devc; |
aeaad0b0 | 600 | |
e66d1892 | 601 | devc = (sdi) ? sdi->priv : NULL; |
aeaad0b0 | 602 | |
e66d1892 UH |
603 | switch (key) { |
604 | case SR_CONF_SCAN_OPTIONS: | |
605 | case SR_CONF_DEVICE_OPTIONS: | |
606 | return std_opts_config_list(key, data, sdi, cg, | |
53012da6 | 607 | ARRAY_AND_SIZE(scanopts), ARRAY_AND_SIZE(drvopts), |
e66d1892 UH |
608 | (devc) ? devc->model->devopts : NULL, |
609 | (devc) ? devc->model->num_devopts : 0); | |
be64f90b DE |
610 | } |
611 | ||
612 | if (!has_devopt(devc->model, key | SR_CONF_LIST)) | |
613 | return SR_ERR_NA; | |
614 | ||
615 | switch (key) { | |
5874e88d | 616 | case SR_CONF_SAMPLERATE: |
463160cb | 617 | *data = std_gvar_samplerates(devc->model->samplerates, devc->model->num_samplerates); |
5874e88d | 618 | break; |
bbe7e48a | 619 | case SR_CONF_TRIGGER_MATCH: |
53012da6 | 620 | *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches)); |
5874e88d | 621 | break; |
e6e54bd2 | 622 | case SR_CONF_TRIGGER_SOURCE: |
53012da6 | 623 | *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_source_names)); |
e6e54bd2 DE |
624 | break; |
625 | case SR_CONF_TRIGGER_SLOPE: | |
6358f0a9 | 626 | case SR_CONF_CLOCK_EDGE: |
53012da6 | 627 | *data = g_variant_new_strv(ARRAY_AND_SIZE(signal_edge_names)); |
e6e54bd2 | 628 | break; |
aeaad0b0 | 629 | default: |
be64f90b DE |
630 | /* Must not happen for a key listed in devopts. */ |
631 | return SR_ERR_BUG; | |
aeaad0b0 DE |
632 | } |
633 | ||
5874e88d | 634 | return SR_OK; |
aeaad0b0 DE |
635 | } |
636 | ||
be64f90b DE |
637 | /* Set up the device hardware to begin capturing samples as soon as the |
638 | * configured trigger conditions are met, or immediately if no triggers | |
639 | * are configured. | |
640 | */ | |
695dc859 | 641 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
5874e88d | 642 | { |
be64f90b | 643 | return lwla_start_acquisition(sdi); |
aeaad0b0 DE |
644 | } |
645 | ||
695dc859 | 646 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
aeaad0b0 | 647 | { |
c81069b3 DE |
648 | struct dev_context *devc; |
649 | ||
c81069b3 | 650 | devc = sdi->priv; |
aeaad0b0 | 651 | |
be64f90b | 652 | if (devc->state != STATE_IDLE && !devc->cancel_requested) { |
c81069b3 | 653 | devc->cancel_requested = TRUE; |
d2f7c417 | 654 | sr_dbg("Requesting cancel."); |
c81069b3 | 655 | } |
d64b5f43 | 656 | |
aeaad0b0 DE |
657 | return SR_OK; |
658 | } | |
659 | ||
dd5c48a6 | 660 | static struct sr_dev_driver sysclk_lwla_driver_info = { |
aeaad0b0 | 661 | .name = "sysclk-lwla", |
5874e88d | 662 | .longname = "SysClk LWLA series", |
aeaad0b0 | 663 | .api_version = 1, |
c2fdcc25 | 664 | .init = std_init, |
700d6b64 | 665 | .cleanup = std_cleanup, |
aeaad0b0 | 666 | .scan = scan, |
c01bf34c | 667 | .dev_list = std_dev_list, |
8bf18daa | 668 | .dev_clear = std_dev_clear, |
aeaad0b0 DE |
669 | .config_get = config_get, |
670 | .config_set = config_set, | |
f3ca73ed | 671 | .config_channel_set = config_channel_set, |
ee38c8ba | 672 | .config_commit = config_commit, |
aeaad0b0 DE |
673 | .config_list = config_list, |
674 | .dev_open = dev_open, | |
675 | .dev_close = dev_close, | |
676 | .dev_acquisition_start = dev_acquisition_start, | |
677 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 678 | .context = NULL, |
aeaad0b0 | 679 | }; |
dd5c48a6 | 680 | SR_REGISTER_DEV_DRIVER(sysclk_lwla_driver_info); |