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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2011-2012 Uwe Hermann <uwe@hermann-uwe.de> | |
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 2 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <ftdi.h> | |
22 | #include <glib.h> | |
23 | #include <string.h> | |
24 | #include <stdlib.h> | |
25 | #include "sigrok.h" | |
26 | #include "sigrok-internal.h" | |
27 | ||
28 | #define USB_VENDOR_ID 0x0403 | |
29 | #define USB_PRODUCT_ID 0x6001 | |
30 | #define USB_DESCRIPTION "ChronoVu LA8" | |
31 | #define USB_VENDOR_NAME "ChronoVu" | |
32 | #define USB_MODEL_NAME "LA8" | |
33 | #define USB_MODEL_VERSION "" | |
34 | ||
35 | #define NUM_PROBES 8 | |
36 | #define TRIGGER_TYPES "01" | |
37 | #define SDRAM_SIZE (8 * 1024 * 1024) | |
38 | #define MIN_NUM_SAMPLES 1 | |
39 | ||
40 | #define BS 4096 /* Block size */ | |
41 | #define NUM_BLOCKS 2048 /* Number of blocks */ | |
42 | ||
43 | static GSList *dev_insts = NULL; | |
44 | ||
45 | /* Probes are numbered 0-7. */ | |
46 | static const char *probe_names[NUM_PROBES + 1] = { | |
47 | "0", | |
48 | "1", | |
49 | "2", | |
50 | "3", | |
51 | "4", | |
52 | "5", | |
53 | "6", | |
54 | "7", | |
55 | NULL, | |
56 | }; | |
57 | ||
58 | /* Private, per-device-instance driver context. */ | |
59 | struct context { | |
60 | /** FTDI device context (used by libftdi). */ | |
61 | struct ftdi_context *ftdic; | |
62 | ||
63 | /** The currently configured samplerate of the device. */ | |
64 | uint64_t cur_samplerate; | |
65 | ||
66 | /** The current sampling limit (in ms). */ | |
67 | uint64_t limit_msec; | |
68 | ||
69 | /** The current sampling limit (in number of samples). */ | |
70 | uint64_t limit_samples; | |
71 | ||
72 | /** TODO */ | |
73 | gpointer session_id; | |
74 | ||
75 | /** | |
76 | * A buffer containing some (mangled) samples from the device. | |
77 | * Format: Pretty mangled-up (due to hardware reasons), see code. | |
78 | */ | |
79 | uint8_t mangled_buf[BS]; | |
80 | ||
81 | /** | |
82 | * An 8MB buffer where we'll store the de-mangled samples. | |
83 | * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. | |
84 | */ | |
85 | uint8_t *final_buf; | |
86 | ||
87 | /** | |
88 | * Trigger pattern (MSB = channel 7, LSB = channel 0). | |
89 | * A 1 bit matches a high signal, 0 matches a low signal on a probe. | |
90 | * Only low/high triggers (but not e.g. rising/falling) are supported. | |
91 | */ | |
92 | uint8_t trigger_pattern; | |
93 | ||
94 | /** | |
95 | * Trigger mask (MSB = channel 7, LSB = channel 0). | |
96 | * A 1 bit means "must match trigger_pattern", 0 means "don't care". | |
97 | */ | |
98 | uint8_t trigger_mask; | |
99 | ||
100 | /** Time (in seconds) before the trigger times out. */ | |
101 | uint64_t trigger_timeout; | |
102 | ||
103 | /** Tells us whether an SR_DF_TRIGGER packet was already sent. */ | |
104 | int trigger_found; | |
105 | ||
106 | /** TODO */ | |
107 | time_t done; | |
108 | ||
109 | /** Counter/index for the data block to be read. */ | |
110 | int block_counter; | |
111 | ||
112 | /** The divcount value (determines the sample period) for the LA8. */ | |
113 | uint8_t divcount; | |
114 | }; | |
115 | ||
116 | /* This will be initialized via hw_dev_info_get()/SR_DI_SAMPLERATES. */ | |
117 | static uint64_t supported_samplerates[255 + 1] = { 0 }; | |
118 | ||
119 | /* | |
120 | * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz | |
121 | * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz | |
122 | */ | |
123 | static struct sr_samplerates samplerates = { | |
124 | .low = 0, | |
125 | .high = 0, | |
126 | .step = 0, | |
127 | .list = supported_samplerates, | |
128 | }; | |
129 | ||
130 | /* Note: Continuous sampling is not supported by the hardware. */ | |
131 | static int hwcaps[] = { | |
132 | SR_HWCAP_LOGIC_ANALYZER, | |
133 | SR_HWCAP_SAMPLERATE, | |
134 | SR_HWCAP_LIMIT_MSEC, /* TODO: Not yet implemented. */ | |
135 | SR_HWCAP_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ | |
136 | 0, | |
137 | }; | |
138 | ||
139 | /* Function prototypes. */ | |
140 | static int la8_close_usb_reset_sequencer(struct context *ctx); | |
141 | static int hw_dev_acquisition_stop(int dev_index, gpointer session_data); | |
142 | static int la8_reset(struct context *ctx); | |
143 | ||
144 | static void fill_supported_samplerates_if_needed(void) | |
145 | { | |
146 | int i; | |
147 | ||
148 | /* Do nothing if supported_samplerates[] is already filled. */ | |
149 | if (supported_samplerates[0] != 0) | |
150 | return; | |
151 | ||
152 | /* Fill supported_samplerates[] with the proper values. */ | |
153 | for (i = 0; i < 255; i++) | |
154 | supported_samplerates[254 - i] = SR_MHZ(100) / (i + 1); | |
155 | supported_samplerates[255] = 0; | |
156 | } | |
157 | ||
158 | /** | |
159 | * Check if the given samplerate is supported by the LA8 hardware. | |
160 | * | |
161 | * @param samplerate The samplerate (in Hz) to check. | |
162 | * @return 1 if the samplerate is supported/valid, 0 otherwise. | |
163 | */ | |
164 | static int is_valid_samplerate(uint64_t samplerate) | |
165 | { | |
166 | int i; | |
167 | ||
168 | fill_supported_samplerates_if_needed(); | |
169 | ||
170 | for (i = 0; i < 255; i++) { | |
171 | if (supported_samplerates[i] == samplerate) | |
172 | return 1; | |
173 | } | |
174 | ||
175 | sr_err("la8: %s: invalid samplerate (%" PRIu64 "Hz)", | |
176 | __func__, samplerate); | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | /** | |
182 | * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants. | |
183 | * | |
184 | * LA8 hardware: sample period = (divcount + 1) * 10ns. | |
185 | * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). | |
186 | * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). | |
187 | * | |
188 | * @param samplerate The samplerate in Hz. | |
189 | * @return The divcount value as needed by the hardware, or 0xff upon errors. | |
190 | */ | |
191 | static uint8_t samplerate_to_divcount(uint64_t samplerate) | |
192 | { | |
193 | if (samplerate == 0) { | |
194 | sr_err("la8: %s: samplerate was 0", __func__); | |
195 | return 0xff; | |
196 | } | |
197 | ||
198 | if (!is_valid_samplerate(samplerate)) { | |
199 | sr_err("la8: %s: can't get divcount, samplerate invalid", | |
200 | __func__); | |
201 | return 0xff; | |
202 | } | |
203 | ||
204 | return (SR_MHZ(100) / samplerate) - 1; | |
205 | } | |
206 | ||
207 | /** | |
208 | * Write data of a certain length to the LA8's FTDI device. | |
209 | * | |
210 | * @param ctx The struct containing private per-device-instance data. Must not | |
211 | * be NULL. ctx->ftdic must not be NULL either. | |
212 | * @param buf The buffer containing the data to write. Must not be NULL. | |
213 | * @param size The number of bytes to write. Must be >= 0. | |
214 | * @return The number of bytes written, or a negative value upon errors. | |
215 | */ | |
216 | static int la8_write(struct context *ctx, uint8_t *buf, int size) | |
217 | { | |
218 | int bytes_written; | |
219 | ||
220 | /* Note: Caller checked that ctx and ctx->ftdic != NULL. */ | |
221 | ||
222 | if (!buf) { | |
223 | sr_err("la8: %s: buf was NULL", __func__); | |
224 | return SR_ERR_ARG; | |
225 | } | |
226 | ||
227 | if (size < 0) { | |
228 | sr_err("la8: %s: size was < 0", __func__); | |
229 | return SR_ERR_ARG; | |
230 | } | |
231 | ||
232 | bytes_written = ftdi_write_data(ctx->ftdic, buf, size); | |
233 | ||
234 | if (bytes_written < 0) { | |
235 | sr_err("la8: %s: ftdi_write_data: (%d) %s", __func__, | |
236 | bytes_written, ftdi_get_error_string(ctx->ftdic)); | |
237 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
238 | } else if (bytes_written != size) { | |
239 | sr_err("la8: %s: bytes to write: %d, bytes written: %d", | |
240 | __func__, size, bytes_written); | |
241 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
242 | } | |
243 | ||
244 | return bytes_written; | |
245 | } | |
246 | ||
247 | /** | |
248 | * Read a certain amount of bytes from the LA8's FTDI device. | |
249 | * | |
250 | * @param ctx The struct containing private per-device-instance data. Must not | |
251 | * be NULL. ctx->ftdic must not be NULL either. | |
252 | * @param buf The buffer where the received data will be stored. Must not | |
253 | * be NULL. | |
254 | * @param size The number of bytes to read. Must be >= 1. | |
255 | * @return The number of bytes read, or a negative value upon errors. | |
256 | */ | |
257 | static int la8_read(struct context *ctx, uint8_t *buf, int size) | |
258 | { | |
259 | int bytes_read; | |
260 | ||
261 | /* Note: Caller checked that ctx and ctx->ftdic != NULL. */ | |
262 | ||
263 | if (!buf) { | |
264 | sr_err("la8: %s: buf was NULL", __func__); | |
265 | return SR_ERR_ARG; | |
266 | } | |
267 | ||
268 | if (size <= 0) { | |
269 | sr_err("la8: %s: size was <= 0", __func__); | |
270 | return SR_ERR_ARG; | |
271 | } | |
272 | ||
273 | bytes_read = ftdi_read_data(ctx->ftdic, buf, size); | |
274 | ||
275 | if (bytes_read < 0) { | |
276 | sr_err("la8: %s: ftdi_read_data: (%d) %s", __func__, | |
277 | bytes_read, ftdi_get_error_string(ctx->ftdic)); | |
278 | } else if (bytes_read != size) { | |
279 | // sr_err("la8: %s: bytes to read: %d, bytes read: %d", | |
280 | // __func__, size, bytes_read); | |
281 | } | |
282 | ||
283 | return bytes_read; | |
284 | } | |
285 | ||
286 | static int la8_close(struct context *ctx) | |
287 | { | |
288 | int ret; | |
289 | ||
290 | if (!ctx) { | |
291 | sr_err("la8: %s: ctx was NULL", __func__); | |
292 | return SR_ERR_ARG; | |
293 | } | |
294 | ||
295 | if (!ctx->ftdic) { | |
296 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
297 | return SR_ERR_ARG; | |
298 | } | |
299 | ||
300 | if ((ret = ftdi_usb_close(ctx->ftdic)) < 0) { | |
301 | sr_err("la8: %s: ftdi_usb_close: (%d) %s", | |
302 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); | |
303 | } | |
304 | ||
305 | return ret; | |
306 | } | |
307 | ||
308 | /** | |
309 | * Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic. | |
310 | * | |
311 | * @param ctx The struct containing private per-device-instance data. | |
312 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. | |
313 | */ | |
314 | static int la8_close_usb_reset_sequencer(struct context *ctx) | |
315 | { | |
316 | /* Magic sequence of bytes for resetting the LA8 sequencer logic. */ | |
317 | uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; | |
318 | int ret; | |
319 | ||
320 | if (!ctx) { | |
321 | sr_err("la8: %s: ctx was NULL", __func__); | |
322 | return SR_ERR_ARG; | |
323 | } | |
324 | ||
325 | if (!ctx->ftdic) { | |
326 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
327 | return SR_ERR_ARG; | |
328 | } | |
329 | ||
330 | if (ctx->ftdic->usb_dev) { | |
331 | /* Reset the LA8 sequencer logic, then wait 100ms. */ | |
332 | sr_dbg("la8: Resetting sequencer logic."); | |
333 | (void) la8_write(ctx, buf, 8); /* Ignore errors. */ | |
334 | g_usleep(100 * 1000); | |
335 | ||
336 | /* Purge FTDI buffers, then reset and close the FTDI device. */ | |
337 | sr_dbg("la8: Purging buffers, resetting+closing FTDI device."); | |
338 | ||
339 | /* Log errors, but ignore them (i.e., don't abort). */ | |
340 | if ((ret = ftdi_usb_purge_buffers(ctx->ftdic)) < 0) | |
341 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", | |
342 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); | |
343 | if ((ret = ftdi_usb_reset(ctx->ftdic)) < 0) | |
344 | sr_err("la8: %s: ftdi_usb_reset: (%d) %s", __func__, | |
345 | ret, ftdi_get_error_string(ctx->ftdic)); | |
346 | if ((ret = ftdi_usb_close(ctx->ftdic)) < 0) | |
347 | sr_err("la8: %s: ftdi_usb_close: (%d) %s", __func__, | |
348 | ret, ftdi_get_error_string(ctx->ftdic)); | |
349 | } | |
350 | ||
351 | /* Close USB device, deinitialize and free the FTDI context. */ | |
352 | ftdi_free(ctx->ftdic); /* Returns void. */ | |
353 | ctx->ftdic = NULL; | |
354 | ||
355 | return SR_OK; | |
356 | } | |
357 | ||
358 | /** | |
359 | * Reset the ChronoVu LA8. | |
360 | * | |
361 | * The LA8 must be reset after a failed read/write operation or upon timeouts. | |
362 | * | |
363 | * @param ctx The struct containing private per-device-instance data. | |
364 | * @return SR_OK upon success, SR_ERR upon failure. | |
365 | */ | |
366 | static int la8_reset(struct context *ctx) | |
367 | { | |
368 | uint8_t buf[BS]; | |
369 | time_t done, now; | |
370 | int bytes_read; | |
371 | ||
372 | if (!ctx) { | |
373 | sr_err("la8: %s: ctx was NULL", __func__); | |
374 | return SR_ERR_ARG; | |
375 | } | |
376 | ||
377 | if (!ctx->ftdic) { | |
378 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
379 | return SR_ERR_ARG; | |
380 | } | |
381 | ||
382 | sr_dbg("la8: Resetting the device."); | |
383 | ||
384 | /* | |
385 | * Purge pending read data from the FTDI hardware FIFO until | |
386 | * no more data is left, or a timeout occurs (after 20s). | |
387 | */ | |
388 | done = 20 + time(NULL); | |
389 | do { | |
390 | /* TODO: Ignore errors? Check for < 0 at least! */ | |
391 | bytes_read = la8_read(ctx, (uint8_t *)&buf, BS); | |
392 | now = time(NULL); | |
393 | } while ((done > now) && (bytes_read > 0)); | |
394 | ||
395 | /* Reset the LA8 sequencer logic and close the USB port. */ | |
396 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
397 | ||
398 | sr_dbg("la8: Device reset finished."); | |
399 | ||
400 | return SR_OK; | |
401 | } | |
402 | ||
403 | static int configure_probes(struct context *ctx, GSList *probes) | |
404 | { | |
405 | struct sr_probe *probe; | |
406 | GSList *l; | |
407 | uint8_t probe_bit; | |
408 | char *tc; | |
409 | ||
410 | /* Note: Caller checked that ctx != NULL. */ | |
411 | ||
412 | ctx->trigger_pattern = 0; | |
413 | ctx->trigger_mask = 0; /* Default to "don't care" for all probes. */ | |
414 | ||
415 | for (l = probes; l; l = l->next) { | |
416 | probe = (struct sr_probe *)l->data; | |
417 | ||
418 | if (!probe) { | |
419 | sr_err("la8: %s: probe was NULL", __func__); | |
420 | return SR_ERR; | |
421 | } | |
422 | ||
423 | /* Skip disabled probes. */ | |
424 | if (!probe->enabled) | |
425 | continue; | |
426 | ||
427 | /* Skip (enabled) probes with no configured trigger. */ | |
428 | if (!probe->trigger) | |
429 | continue; | |
430 | ||
431 | /* Note: Must only be run if probe->trigger != NULL. */ | |
432 | if (probe->index < 0 || probe->index > 7) { | |
433 | sr_err("la8: %s: invalid probe index %d, must be " | |
434 | "between 0 and 7", __func__, probe->index); | |
435 | return SR_ERR; | |
436 | } | |
437 | ||
438 | probe_bit = (1 << (probe->index - 1)); | |
439 | ||
440 | /* Configure the probe's trigger mask and trigger pattern. */ | |
441 | for (tc = probe->trigger; tc && *tc; tc++) { | |
442 | ctx->trigger_mask |= probe_bit; | |
443 | ||
444 | /* Sanity check, LA8 only supports low/high trigger. */ | |
445 | if (*tc != '0' && *tc != '1') { | |
446 | sr_err("la8: %s: invalid trigger '%c', only " | |
447 | "'0'/'1' supported", __func__, *tc); | |
448 | return SR_ERR; | |
449 | } | |
450 | ||
451 | if (*tc == '1') | |
452 | ctx->trigger_pattern |= probe_bit; | |
453 | } | |
454 | } | |
455 | ||
456 | sr_dbg("la8: trigger_mask = 0x%x, trigger_pattern = 0x%x", | |
457 | ctx->trigger_mask, ctx->trigger_pattern); | |
458 | ||
459 | return SR_OK; | |
460 | } | |
461 | ||
462 | static int hw_init(const char *devinfo) | |
463 | { | |
464 | int ret; | |
465 | struct sr_dev_inst *sdi; | |
466 | struct context *ctx; | |
467 | ||
468 | /* Avoid compiler errors. */ | |
469 | (void)devinfo; | |
470 | ||
471 | /* Allocate memory for our private driver context. */ | |
472 | if (!(ctx = g_try_malloc(sizeof(struct context)))) { | |
473 | sr_err("la8: %s: struct context malloc failed", __func__); | |
474 | goto err_free_nothing; | |
475 | } | |
476 | ||
477 | /* Set some sane defaults. */ | |
478 | ctx->ftdic = NULL; | |
479 | ctx->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
480 | ctx->limit_msec = 0; | |
481 | ctx->limit_samples = 0; | |
482 | ctx->session_id = NULL; | |
483 | memset(ctx->mangled_buf, 0, BS); | |
484 | ctx->final_buf = NULL; | |
485 | ctx->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
486 | ctx->trigger_mask = 0x00; /* All probes are "don't care". */ | |
487 | ctx->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
488 | ctx->trigger_found = 0; | |
489 | ctx->done = 0; | |
490 | ctx->block_counter = 0; | |
491 | ctx->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
492 | ||
493 | /* Allocate memory where we'll store the de-mangled data. */ | |
494 | if (!(ctx->final_buf = g_try_malloc(SDRAM_SIZE))) { | |
495 | sr_err("la8: %s: final_buf malloc failed", __func__); | |
496 | goto err_free_ctx; | |
497 | } | |
498 | ||
499 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
500 | if (!(ctx->ftdic = ftdi_new())) { | |
501 | sr_err("la8: %s: ftdi_new failed", __func__); | |
502 | goto err_free_final_buf; | |
503 | } | |
504 | ||
505 | /* Check for the device and temporarily open it. */ | |
506 | if ((ret = ftdi_usb_open_desc(ctx->ftdic, USB_VENDOR_ID, | |
507 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
508 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
509 | goto err_free_ftdic; | |
510 | } | |
511 | sr_dbg("la8: Found LA8 device (%04x:%04x).", USB_VENDOR_ID, | |
512 | USB_PRODUCT_ID); | |
513 | ||
514 | /* Register the device with libsigrok. */ | |
515 | sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, | |
516 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
517 | if (!sdi) { | |
518 | sr_err("la8: %s: sr_dev_inst_new failed", __func__); | |
519 | goto err_close_ftdic; | |
520 | } | |
521 | ||
522 | sdi->priv = ctx; | |
523 | ||
524 | dev_insts = g_slist_append(dev_insts, sdi); | |
525 | ||
526 | sr_spew("la8: Device init successful."); | |
527 | ||
528 | /* Close device. We'll reopen it again when we need it. */ | |
529 | (void) la8_close(ctx); /* Log, but ignore errors. */ | |
530 | ||
531 | return 1; | |
532 | ||
533 | err_close_ftdic: | |
534 | (void) la8_close(ctx); /* Log, but ignore errors. */ | |
535 | err_free_ftdic: | |
536 | free(ctx->ftdic); /* NOT g_free()! */ | |
537 | err_free_final_buf: | |
538 | g_free(ctx->final_buf); | |
539 | err_free_ctx: | |
540 | g_free(ctx); | |
541 | err_free_nothing: | |
542 | ||
543 | return 0; | |
544 | } | |
545 | ||
546 | static int hw_dev_open(int dev_index) | |
547 | { | |
548 | int ret; | |
549 | struct sr_dev_inst *sdi; | |
550 | struct context *ctx; | |
551 | ||
552 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { | |
553 | sr_err("la8: %s: sdi was NULL", __func__); | |
554 | return SR_ERR; /* TODO: SR_ERR_ARG? */ | |
555 | } | |
556 | ||
557 | if (!(ctx = sdi->priv)) { | |
558 | sr_err("la8: %s: sdi->priv was NULL", __func__); | |
559 | return SR_ERR; /* TODO: SR_ERR_ARG? */ | |
560 | } | |
561 | ||
562 | sr_dbg("la8: Opening LA8 device (%04x:%04x).", USB_VENDOR_ID, | |
563 | USB_PRODUCT_ID); | |
564 | ||
565 | /* Open the device. */ | |
566 | if ((ret = ftdi_usb_open_desc(ctx->ftdic, USB_VENDOR_ID, | |
567 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
568 | sr_err("la8: %s: ftdi_usb_open_desc: (%d) %s", | |
569 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); | |
570 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
571 | return SR_ERR; | |
572 | } | |
573 | sr_dbg("la8: Device opened successfully."); | |
574 | ||
575 | /* Purge RX/TX buffers in the FTDI chip. */ | |
576 | if ((ret = ftdi_usb_purge_buffers(ctx->ftdic)) < 0) { | |
577 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", | |
578 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); | |
579 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
580 | goto err_dev_open_close_ftdic; | |
581 | } | |
582 | sr_dbg("la8: FTDI buffers purged successfully."); | |
583 | ||
584 | /* Enable flow control in the FTDI chip. */ | |
585 | if ((ret = ftdi_setflowctrl(ctx->ftdic, SIO_RTS_CTS_HS)) < 0) { | |
586 | sr_err("la8: %s: ftdi_setflowcontrol: (%d) %s", | |
587 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); | |
588 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
589 | goto err_dev_open_close_ftdic; | |
590 | } | |
591 | sr_dbg("la8: FTDI flow control enabled successfully."); | |
592 | ||
593 | /* Wait 100ms. */ | |
594 | g_usleep(100 * 1000); | |
595 | ||
596 | sdi->status = SR_ST_ACTIVE; | |
597 | ||
598 | return SR_OK; | |
599 | ||
600 | err_dev_open_close_ftdic: | |
601 | (void) la8_close(ctx); /* Log, but ignore errors. */ | |
602 | return SR_ERR; | |
603 | } | |
604 | ||
605 | static int set_samplerate(struct sr_dev_inst *sdi, uint64_t samplerate) | |
606 | { | |
607 | struct context *ctx; | |
608 | ||
609 | /* Note: Caller checked that sdi and sdi->priv != NULL. */ | |
610 | ||
611 | ctx = sdi->priv; | |
612 | ||
613 | sr_spew("la8: Trying to set samplerate to %" PRIu64 "Hz.", samplerate); | |
614 | ||
615 | fill_supported_samplerates_if_needed(); | |
616 | ||
617 | /* Check if this is a samplerate supported by the hardware. */ | |
618 | if (!is_valid_samplerate(samplerate)) | |
619 | return SR_ERR; | |
620 | ||
621 | /* Set the new samplerate. */ | |
622 | ctx->cur_samplerate = samplerate; | |
623 | ||
624 | sr_dbg("la8: Samplerate set to %" PRIu64 "Hz.", ctx->cur_samplerate); | |
625 | ||
626 | return SR_OK; | |
627 | } | |
628 | ||
629 | static int hw_dev_close(int dev_index) | |
630 | { | |
631 | struct sr_dev_inst *sdi; | |
632 | struct context *ctx; | |
633 | ||
634 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { | |
635 | sr_err("la8: %s: sdi was NULL", __func__); | |
636 | return SR_ERR; /* TODO: SR_ERR_ARG? */ | |
637 | } | |
638 | ||
639 | if (!(ctx = sdi->priv)) { | |
640 | sr_err("la8: %s: sdi->priv was NULL", __func__); | |
641 | return SR_ERR; /* TODO: SR_ERR_ARG? */ | |
642 | } | |
643 | ||
644 | sr_dbg("la8: Closing device."); | |
645 | ||
646 | if (sdi->status == SR_ST_ACTIVE) { | |
647 | sr_dbg("la8: Status ACTIVE, closing device."); | |
648 | /* TODO: Really ignore errors here, or return SR_ERR? */ | |
649 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
650 | } else { | |
651 | sr_spew("la8: Status not ACTIVE, nothing to do."); | |
652 | } | |
653 | ||
654 | sdi->status = SR_ST_INACTIVE; | |
655 | ||
656 | sr_dbg("la8: Freeing sample buffer."); | |
657 | g_free(ctx->final_buf); | |
658 | ||
659 | return SR_OK; | |
660 | } | |
661 | ||
662 | static int hw_cleanup(void) | |
663 | { | |
664 | GSList *l; | |
665 | struct sr_dev_inst *sdi; | |
666 | int ret = SR_OK; | |
667 | ||
668 | /* Properly close all devices. */ | |
669 | for (l = dev_insts; l; l = l->next) { | |
670 | if (!(sdi = l->data)) { | |
671 | /* Log error, but continue cleaning up the rest. */ | |
672 | sr_err("la8: %s: sdi was NULL, continuing", __func__); | |
673 | ret = SR_ERR_BUG; | |
674 | continue; | |
675 | } | |
676 | sr_dev_inst_free(sdi); /* Returns void. */ | |
677 | } | |
678 | g_slist_free(dev_insts); /* Returns void. */ | |
679 | dev_insts = NULL; | |
680 | ||
681 | return ret; | |
682 | } | |
683 | ||
684 | static void *hw_dev_info_get(int dev_index, int dev_info_id) | |
685 | { | |
686 | struct sr_dev_inst *sdi; | |
687 | struct context *ctx; | |
688 | void *info; | |
689 | ||
690 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { | |
691 | sr_err("la8: %s: sdi was NULL", __func__); | |
692 | return NULL; | |
693 | } | |
694 | ||
695 | if (!(ctx = sdi->priv)) { | |
696 | sr_err("la8: %s: sdi->priv was NULL", __func__); | |
697 | return NULL; | |
698 | } | |
699 | ||
700 | sr_spew("la8: %s: dev_index %d, dev_info_id %d.", __func__, | |
701 | dev_index, dev_info_id); | |
702 | ||
703 | switch (dev_info_id) { | |
704 | case SR_DI_INST: | |
705 | info = sdi; | |
706 | sr_spew("la8: %s: Returning sdi.", __func__); | |
707 | break; | |
708 | case SR_DI_NUM_PROBES: | |
709 | info = GINT_TO_POINTER(NUM_PROBES); | |
710 | sr_spew("la8: %s: Returning number of probes: %d.", __func__, | |
711 | NUM_PROBES); | |
712 | break; | |
713 | case SR_DI_PROBE_NAMES: | |
714 | info = probe_names; | |
715 | sr_spew("la8: %s: Returning probenames.", __func__); | |
716 | break; | |
717 | case SR_DI_SAMPLERATES: | |
718 | fill_supported_samplerates_if_needed(); | |
719 | info = &samplerates; | |
720 | sr_spew("la8: %s: Returning samplerates.", __func__); | |
721 | break; | |
722 | case SR_DI_TRIGGER_TYPES: | |
723 | info = (char *)TRIGGER_TYPES; | |
724 | sr_spew("la8: %s: Returning trigger types: %s.", __func__, | |
725 | TRIGGER_TYPES); | |
726 | break; | |
727 | case SR_DI_CUR_SAMPLERATE: | |
728 | info = &ctx->cur_samplerate; | |
729 | sr_spew("la8: %s: Returning samplerate: %" PRIu64 "Hz.", | |
730 | __func__, ctx->cur_samplerate); | |
731 | break; | |
732 | default: | |
733 | /* Unknown device info ID, return NULL. */ | |
734 | sr_err("la8: %s: Unknown device info ID", __func__); | |
735 | info = NULL; | |
736 | break; | |
737 | } | |
738 | ||
739 | return info; | |
740 | } | |
741 | ||
742 | static int hw_dev_status_get(int dev_index) | |
743 | { | |
744 | struct sr_dev_inst *sdi; | |
745 | ||
746 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { | |
747 | sr_err("la8: %s: sdi was NULL, device not found", __func__); | |
748 | return SR_ST_NOT_FOUND; | |
749 | } | |
750 | ||
751 | sr_dbg("la8: Returning status: %d.", sdi->status); | |
752 | ||
753 | return sdi->status; | |
754 | } | |
755 | ||
756 | static int *hw_hwcap_get_all(void) | |
757 | { | |
758 | sr_spew("la8: Returning list of device capabilities."); | |
759 | ||
760 | return hwcaps; | |
761 | } | |
762 | ||
763 | static int hw_dev_config_set(int dev_index, int hwcap, void *value) | |
764 | { | |
765 | struct sr_dev_inst *sdi; | |
766 | struct context *ctx; | |
767 | ||
768 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { | |
769 | sr_err("la8: %s: sdi was NULL", __func__); | |
770 | return SR_ERR; /* TODO: SR_ERR_ARG? */ | |
771 | } | |
772 | ||
773 | if (!(ctx = sdi->priv)) { | |
774 | sr_err("la8: %s: sdi->priv was NULL", __func__); | |
775 | return SR_ERR; /* TODO: SR_ERR_ARG? */ | |
776 | } | |
777 | ||
778 | sr_spew("la8: %s: dev_index %d, hwcap %d", __func__, dev_index, hwcap); | |
779 | ||
780 | switch (hwcap) { | |
781 | case SR_HWCAP_SAMPLERATE: | |
782 | if (set_samplerate(sdi, *(uint64_t *)value) == SR_ERR) { | |
783 | sr_err("la8: %s: setting samplerate failed.", __func__); | |
784 | return SR_ERR; | |
785 | } | |
786 | sr_dbg("la8: SAMPLERATE = %" PRIu64, ctx->cur_samplerate); | |
787 | break; | |
788 | case SR_HWCAP_PROBECONFIG: | |
789 | if (configure_probes(ctx, (GSList *)value) != SR_OK) { | |
790 | sr_err("la8: %s: probe config failed.", __func__); | |
791 | return SR_ERR; | |
792 | } | |
793 | break; | |
794 | case SR_HWCAP_LIMIT_MSEC: | |
795 | if (*(uint64_t *)value == 0) { | |
796 | sr_err("la8: %s: LIMIT_MSEC can't be 0.", __func__); | |
797 | return SR_ERR; | |
798 | } | |
799 | ctx->limit_msec = *(uint64_t *)value; | |
800 | sr_dbg("la8: LIMIT_MSEC = %" PRIu64, ctx->limit_msec); | |
801 | break; | |
802 | case SR_HWCAP_LIMIT_SAMPLES: | |
803 | if (*(uint64_t *)value < MIN_NUM_SAMPLES) { | |
804 | sr_err("la8: %s: LIMIT_SAMPLES too small.", __func__); | |
805 | return SR_ERR; | |
806 | } | |
807 | ctx->limit_samples = *(uint64_t *)value; | |
808 | sr_dbg("la8: LIMIT_SAMPLES = %" PRIu64, ctx->limit_samples); | |
809 | break; | |
810 | default: | |
811 | /* Unknown capability, return SR_ERR. */ | |
812 | sr_err("la8: %s: Unknown capability.", __func__); | |
813 | return SR_ERR; | |
814 | break; | |
815 | } | |
816 | ||
817 | return SR_OK; | |
818 | } | |
819 | ||
820 | /** | |
821 | * Get a block of data from the LA8. | |
822 | * | |
823 | * @param ctx The struct containing private per-device-instance data. Must not | |
824 | * be NULL. ctx->ftdic must not be NULL either. | |
825 | * @return SR_OK upon success, or SR_ERR upon errors. | |
826 | */ | |
827 | static int la8_read_block(struct context *ctx) | |
828 | { | |
829 | int i, byte_offset, m, mi, p, index, bytes_read; | |
830 | time_t now; | |
831 | ||
832 | /* Note: Caller checked that ctx and ctx->ftdic != NULL. */ | |
833 | ||
834 | sr_spew("la8: Reading block %d.", ctx->block_counter); | |
835 | ||
836 | bytes_read = la8_read(ctx, ctx->mangled_buf, BS); | |
837 | ||
838 | /* If first block read got 0 bytes, retry until success or timeout. */ | |
839 | if ((bytes_read == 0) && (ctx->block_counter == 0)) { | |
840 | do { | |
841 | sr_spew("la8: Reading block 0 (again)."); | |
842 | bytes_read = la8_read(ctx, ctx->mangled_buf, BS); | |
843 | /* TODO: How to handle read errors here? */ | |
844 | now = time(NULL); | |
845 | } while ((ctx->done > now) && (bytes_read == 0)); | |
846 | } | |
847 | ||
848 | /* Check if block read was successful or a timeout occured. */ | |
849 | if (bytes_read != BS) { | |
850 | sr_err("la8: Trigger timed out. Bytes read: %d.", bytes_read); | |
851 | (void) la8_reset(ctx); /* Ignore errors. */ | |
852 | return SR_ERR; | |
853 | } | |
854 | ||
855 | /* De-mangle the data. */ | |
856 | sr_spew("la8: Demangling block %d.", ctx->block_counter); | |
857 | byte_offset = ctx->block_counter * BS; | |
858 | m = byte_offset / (1024 * 1024); | |
859 | mi = m * (1024 * 1024); | |
860 | for (i = 0; i < BS; i++) { | |
861 | p = i & (1 << 0); | |
862 | index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; | |
863 | index += (ctx->divcount == 0) ? p : (1 - p); | |
864 | ctx->final_buf[index] = ctx->mangled_buf[i]; | |
865 | } | |
866 | ||
867 | return SR_OK; | |
868 | } | |
869 | ||
870 | static void send_block_to_session_bus(struct context *ctx, int block) | |
871 | { | |
872 | int i; | |
873 | uint8_t sample, expected_sample; | |
874 | struct sr_datafeed_packet packet; | |
875 | struct sr_datafeed_logic logic; | |
876 | int trigger_point; /* Relative trigger point (in this block). */ | |
877 | ||
878 | /* Note: No sanity checks on ctx/block, caller is responsible. */ | |
879 | ||
880 | /* Check if we can find the trigger condition in this block. */ | |
881 | trigger_point = -1; | |
882 | expected_sample = ctx->trigger_pattern & ctx->trigger_mask; | |
883 | for (i = 0; i < BS; i++) { | |
884 | /* Don't continue if the trigger was found previously. */ | |
885 | if (ctx->trigger_found) | |
886 | break; | |
887 | ||
888 | /* | |
889 | * Also, don't continue if triggers are "don't care", i.e. if | |
890 | * no trigger conditions were specified by the user. In that | |
891 | * case we don't want to send an SR_DF_TRIGGER packet at all. | |
892 | */ | |
893 | if (ctx->trigger_mask == 0x00) | |
894 | break; | |
895 | ||
896 | sample = *(ctx->final_buf + (block * BS) + i); | |
897 | ||
898 | if ((sample & ctx->trigger_mask) == expected_sample) { | |
899 | trigger_point = i; | |
900 | ctx->trigger_found = 1; | |
901 | break; | |
902 | } | |
903 | } | |
904 | ||
905 | /* If no trigger was found, send one SR_DF_LOGIC packet. */ | |
906 | if (trigger_point == -1) { | |
907 | /* Send an SR_DF_LOGIC packet to the session bus. */ | |
908 | sr_spew("la8: sending SR_DF_LOGIC packet (%d bytes) for " | |
909 | "block %d", BS, block); | |
910 | packet.type = SR_DF_LOGIC; | |
911 | packet.payload = &logic; | |
912 | logic.length = BS; | |
913 | logic.unitsize = 1; | |
914 | logic.data = ctx->final_buf + (block * BS); | |
915 | sr_session_bus(ctx->session_id, &packet); | |
916 | return; | |
917 | } | |
918 | ||
919 | /* | |
920 | * We found the trigger, so some special handling is needed. We have | |
921 | * to send an SR_DF_LOGIC packet with the samples before the trigger | |
922 | * (if any), then the SD_DF_TRIGGER packet itself, then another | |
923 | * SR_DF_LOGIC packet with the samples after the trigger (if any). | |
924 | */ | |
925 | ||
926 | /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */ | |
927 | ||
928 | /* If at least one sample is located before the trigger... */ | |
929 | if (trigger_point > 0) { | |
930 | /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */ | |
931 | sr_spew("la8: sending pre-trigger SR_DF_LOGIC packet, " | |
932 | "start = %d, length = %d", block * BS, trigger_point); | |
933 | packet.type = SR_DF_LOGIC; | |
934 | packet.payload = &logic; | |
935 | logic.length = trigger_point; | |
936 | logic.unitsize = 1; | |
937 | logic.data = ctx->final_buf + (block * BS); | |
938 | sr_session_bus(ctx->session_id, &packet); | |
939 | } | |
940 | ||
941 | /* Send the SR_DF_TRIGGER packet to the session bus. */ | |
942 | sr_spew("la8: sending SR_DF_TRIGGER packet, sample = %d", | |
943 | (block * BS) + trigger_point); | |
944 | packet.type = SR_DF_TRIGGER; | |
945 | packet.payload = NULL; | |
946 | sr_session_bus(ctx->session_id, &packet); | |
947 | ||
948 | /* If at least one sample is located after the trigger... */ | |
949 | if (trigger_point < (BS - 1)) { | |
950 | /* Send post-trigger SR_DF_LOGIC packet to the session bus. */ | |
951 | sr_spew("la8: sending post-trigger SR_DF_LOGIC packet, " | |
952 | "start = %d, length = %d", | |
953 | (block * BS) + trigger_point, BS - trigger_point); | |
954 | packet.type = SR_DF_LOGIC; | |
955 | packet.payload = &logic; | |
956 | logic.length = BS - trigger_point; | |
957 | logic.unitsize = 1; | |
958 | logic.data = ctx->final_buf + (block * BS) + trigger_point; | |
959 | sr_session_bus(ctx->session_id, &packet); | |
960 | } | |
961 | } | |
962 | ||
963 | static int receive_data(int fd, int revents, void *session_data) | |
964 | { | |
965 | int i, ret; | |
966 | struct sr_dev_inst *sdi; | |
967 | struct context *ctx; | |
968 | ||
969 | /* Avoid compiler errors. */ | |
970 | (void)fd; | |
971 | (void)revents; | |
972 | ||
973 | if (!(sdi = session_data)) { | |
974 | sr_err("la8: %s: session_data was NULL", __func__); | |
975 | return FALSE; | |
976 | } | |
977 | ||
978 | if (!(ctx = sdi->priv)) { | |
979 | sr_err("la8: %s: sdi->priv was NULL", __func__); | |
980 | return FALSE; | |
981 | } | |
982 | ||
983 | if (!ctx->ftdic) { | |
984 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
985 | return FALSE; | |
986 | } | |
987 | ||
988 | /* Get one block of data. */ | |
989 | if ((ret = la8_read_block(ctx)) < 0) { | |
990 | sr_err("la8: %s: la8_read_block error: %d", __func__, ret); | |
991 | hw_dev_acquisition_stop(sdi->index, session_data); | |
992 | return FALSE; | |
993 | } | |
994 | ||
995 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ | |
996 | if (ctx->block_counter != (NUM_BLOCKS - 1)) { | |
997 | ctx->block_counter++; | |
998 | return TRUE; | |
999 | } | |
1000 | ||
1001 | sr_dbg("la8: Sampling finished, sending data to session bus now."); | |
1002 | ||
1003 | /* All data was received and demangled, send it to the session bus. */ | |
1004 | for (i = 0; i < NUM_BLOCKS; i++) | |
1005 | send_block_to_session_bus(ctx, i); | |
1006 | ||
1007 | hw_dev_acquisition_stop(sdi->index, session_data); | |
1008 | ||
1009 | // return FALSE; /* FIXME? */ | |
1010 | return TRUE; | |
1011 | } | |
1012 | ||
1013 | static int hw_dev_acquisition_start(int dev_index, gpointer session_data) | |
1014 | { | |
1015 | struct sr_dev_inst *sdi; | |
1016 | struct context *ctx; | |
1017 | struct sr_datafeed_packet packet; | |
1018 | struct sr_datafeed_header header; | |
1019 | uint8_t buf[4]; | |
1020 | int bytes_written; | |
1021 | ||
1022 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { | |
1023 | sr_err("la8: %s: sdi was NULL", __func__); | |
1024 | return SR_ERR; /* TODO: SR_ERR_ARG? */ | |
1025 | } | |
1026 | ||
1027 | if (!(ctx = sdi->priv)) { | |
1028 | sr_err("la8: %s: sdi->priv was NULL", __func__); | |
1029 | return SR_ERR; /* TODO: SR_ERR_ARG? */ | |
1030 | } | |
1031 | ||
1032 | if (!ctx->ftdic) { | |
1033 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
1034 | return SR_ERR_ARG; | |
1035 | } | |
1036 | ||
1037 | ctx->divcount = samplerate_to_divcount(ctx->cur_samplerate); | |
1038 | if (ctx->divcount == 0xff) { | |
1039 | sr_err("la8: %s: invalid divcount/samplerate", __func__); | |
1040 | return SR_ERR; | |
1041 | } | |
1042 | ||
1043 | sr_dbg("la8: Starting acquisition."); | |
1044 | ||
1045 | /* Fill acquisition parameters into buf[]. */ | |
1046 | buf[0] = ctx->divcount; | |
1047 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
1048 | buf[2] = ctx->trigger_pattern; | |
1049 | buf[3] = ctx->trigger_mask; | |
1050 | ||
1051 | /* Start acquisition. */ | |
1052 | bytes_written = la8_write(ctx, buf, 4); | |
1053 | ||
1054 | if (bytes_written < 0) { | |
1055 | sr_err("la8: Acquisition failed to start."); | |
1056 | return SR_ERR; | |
1057 | } else if (bytes_written != 4) { | |
1058 | sr_err("la8: Acquisition failed to start."); | |
1059 | return SR_ERR; /* TODO: Other error and return code? */ | |
1060 | } | |
1061 | ||
1062 | sr_dbg("la8: Acquisition started successfully."); | |
1063 | ||
1064 | ctx->session_id = session_data; | |
1065 | ||
1066 | /* Send header packet to the session bus. */ | |
1067 | sr_dbg("la8: Sending SR_DF_HEADER."); | |
1068 | packet.type = SR_DF_HEADER; | |
1069 | packet.payload = &header; | |
1070 | header.feed_version = 1; | |
1071 | gettimeofday(&header.starttime, NULL); | |
1072 | header.samplerate = ctx->cur_samplerate; | |
1073 | header.num_logic_probes = NUM_PROBES; | |
1074 | sr_session_bus(session_data, &packet); | |
1075 | ||
1076 | /* Time when we should be done (for detecting trigger timeouts). */ | |
1077 | ctx->done = (ctx->divcount + 1) * 0.08388608 + time(NULL) | |
1078 | + ctx->trigger_timeout; | |
1079 | ctx->block_counter = 0; | |
1080 | ctx->trigger_found = 0; | |
1081 | ||
1082 | /* Hook up a dummy handler to receive data from the LA8. */ | |
1083 | sr_source_add(-1, G_IO_IN, 0, receive_data, sdi); | |
1084 | ||
1085 | return SR_OK; | |
1086 | } | |
1087 | ||
1088 | static int hw_dev_acquisition_stop(int dev_index, gpointer session_data) | |
1089 | { | |
1090 | struct sr_dev_inst *sdi; | |
1091 | struct context *ctx; | |
1092 | struct sr_datafeed_packet packet; | |
1093 | ||
1094 | sr_dbg("la8: Stopping acquisition."); | |
1095 | ||
1096 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { | |
1097 | sr_err("la8: %s: sdi was NULL", __func__); | |
1098 | return SR_ERR_BUG; | |
1099 | } | |
1100 | ||
1101 | if (!(ctx = sdi->priv)) { | |
1102 | sr_err("la8: %s: sdi->priv was NULL", __func__); | |
1103 | return SR_ERR_BUG; | |
1104 | } | |
1105 | ||
1106 | /* Send end packet to the session bus. */ | |
1107 | sr_dbg("la8: Sending SR_DF_END."); | |
1108 | packet.type = SR_DF_END; | |
1109 | sr_session_bus(session_data, &packet); | |
1110 | ||
1111 | return SR_OK; | |
1112 | } | |
1113 | ||
1114 | SR_PRIV struct sr_dev_driver chronovu_la8_driver_info = { | |
1115 | .name = "chronovu-la8", | |
1116 | .longname = "ChronoVu LA8", | |
1117 | .api_version = 1, | |
1118 | .init = hw_init, | |
1119 | .cleanup = hw_cleanup, | |
1120 | .dev_open = hw_dev_open, | |
1121 | .dev_close = hw_dev_close, | |
1122 | .dev_info_get = hw_dev_info_get, | |
1123 | .dev_status_get = hw_dev_status_get, | |
1124 | .hwcap_get_all = hw_hwcap_get_all, | |
1125 | .dev_config_set = hw_dev_config_set, | |
1126 | .dev_acquisition_start = hw_dev_acquisition_start, | |
1127 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
1128 | }; |