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f4314d7e UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2011 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> | |
ecaf59db | 22 | #include <glib.h> |
f4314d7e | 23 | #include <sigrok.h> |
b08024a8 | 24 | #include <sigrok-internal.h> |
f4314d7e UH |
25 | |
26 | #define USB_VENDOR_ID 0x0403 | |
27 | #define USB_PRODUCT_ID 0x6001 | |
28 | #define USB_DESCRIPTION "ChronoVu LA8" | |
29 | #define USB_VENDOR_NAME "ChronoVu" | |
30 | #define USB_MODEL_NAME "LA8" | |
31 | #define USB_MODEL_VERSION "" | |
32 | ||
33 | #define NUM_PROBES 8 | |
34 | #define TRIGGER_TYPES "01" | |
35 | #define SDRAM_SIZE (8 * 1024 * 1024) | |
36 | #define MIN_NUM_SAMPLES 1 | |
37 | ||
38 | static GSList *device_instances = NULL; | |
39 | ||
40 | struct la8 { | |
41 | /** FTDI device context (used by libftdi). */ | |
42 | struct ftdi_context *ftdic; | |
43 | ||
44 | /** The currently configured samplerate of the device. */ | |
45 | uint64_t cur_samplerate; | |
46 | ||
47 | /** The current sampling limit (in ms). */ | |
48 | uint64_t limit_msec; | |
49 | ||
50 | /** The current sampling limit (in number of samples). */ | |
51 | uint64_t limit_samples; | |
52 | ||
f4314d7e UH |
53 | /** TODO */ |
54 | gpointer session_id; | |
55 | ||
56 | /** | |
57 | * An 8MB buffer containing the (mangled) samples from the device. | |
58 | * Format: Pretty mangled-up (due to hardware reasons), see code. | |
59 | */ | |
60 | uint8_t *mangled_buf; | |
61 | ||
62 | /** | |
63 | * An 8MB buffer where we'll store the de-mangled samples. | |
64 | * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. | |
65 | */ | |
66 | uint8_t *final_buf; | |
67 | ||
68 | /** | |
69 | * Trigger pattern (MSB = channel 7, LSB = channel 0). | |
70 | * A 1 bit matches a high signal, 0 matches a low signal on a probe. | |
71 | * Only low/high triggers (but not e.g. rising/falling) are supported. | |
72 | */ | |
73 | uint8_t trigger_pattern; | |
74 | ||
75 | /** | |
76 | * Trigger mask (MSB = channel 7, LSB = channel 0). | |
77 | * A 1 bit means "must match trigger_pattern", 0 means "don't care". | |
78 | */ | |
79 | uint8_t trigger_mask; | |
80 | ||
81 | /** Time (in seconds) before the trigger times out. */ | |
82 | uint64_t trigger_timeout; | |
83 | ||
84 | /** TODO */ | |
85 | time_t done; | |
86 | ||
87 | /** Counter/index for the data block (0..2047) to be read. */ | |
88 | int block_counter; | |
89 | ||
90 | /** The divcount value (determines the sample period) for the LA8. */ | |
91 | uint8_t divcount; | |
92 | }; | |
93 | ||
94 | /* This will be initialized via hw_get_device_info()/SR_DI_SAMPLERATES. */ | |
95 | static uint64_t supported_samplerates[255 + 1] = { 0 }; | |
96 | ||
97 | /* | |
98 | * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz | |
99 | * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz | |
100 | */ | |
101 | static struct sr_samplerates samplerates = { | |
102 | .low = 0, | |
103 | .high = 0, | |
104 | .step = 0, | |
105 | .list = supported_samplerates, | |
106 | }; | |
107 | ||
108 | /* Note: Continuous sampling is not supported by the hardware. */ | |
109 | static int capabilities[] = { | |
110 | SR_HWCAP_LOGIC_ANALYZER, | |
111 | SR_HWCAP_SAMPLERATE, | |
112 | SR_HWCAP_LIMIT_MSEC, /* TODO: Not yet implemented. */ | |
113 | SR_HWCAP_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ | |
114 | 0, | |
115 | }; | |
116 | ||
117 | /* Function prototypes. */ | |
118 | static int la8_close_usb_reset_sequencer(struct la8 *la8); | |
119 | static void hw_stop_acquisition(int device_index, gpointer session_device_id); | |
120 | static int la8_reset(struct la8 *la8); | |
121 | ||
122 | static void fill_supported_samplerates_if_needed(void) | |
123 | { | |
124 | int i; | |
125 | ||
126 | /* Do nothing if supported_samplerates[] is already filled. */ | |
127 | if (supported_samplerates[0] != 0) | |
128 | return; | |
129 | ||
130 | /* Fill supported_samplerates[] with the proper values. */ | |
131 | for (i = 0; i < 255; i++) | |
132 | supported_samplerates[254 - i] = SR_MHZ(100) / (i + 1); | |
133 | supported_samplerates[255] = 0; | |
134 | } | |
135 | ||
136 | /** | |
137 | * Check if the given samplerate is supported by the LA8 hardware. | |
138 | * | |
139 | * @param samplerate The samplerate (in Hz) to check. | |
140 | * @return 1 if the samplerate is supported/valid, 0 otherwise. | |
141 | */ | |
142 | static int is_valid_samplerate(uint64_t samplerate) | |
143 | { | |
144 | int i; | |
145 | ||
146 | fill_supported_samplerates_if_needed(); | |
147 | ||
148 | for (i = 0; i < 255; i++) { | |
149 | if (supported_samplerates[i] == samplerate) | |
150 | return 1; | |
151 | } | |
152 | ||
b08024a8 UH |
153 | sr_warn("la8: %s: invalid samplerate (%" PRIu64 "Hz)", |
154 | __func__, samplerate); | |
f4314d7e UH |
155 | |
156 | return 0; | |
157 | } | |
158 | ||
159 | /** | |
160 | * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants. | |
161 | * | |
162 | * LA8 hardware: sample period = (divcount + 1) * 10ns. | |
163 | * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). | |
164 | * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). | |
165 | * | |
166 | * @param samplerate The samplerate in Hz. | |
167 | * @return The divcount value as needed by the hardware, or 0xff upon errors. | |
168 | */ | |
169 | static uint8_t samplerate_to_divcount(uint64_t samplerate) | |
170 | { | |
171 | if (samplerate == 0) { | |
30939770 | 172 | sr_err("la8: %s: samplerate was 0", __func__); |
f4314d7e UH |
173 | return 0xff; |
174 | } | |
175 | ||
176 | if (!is_valid_samplerate(samplerate)) { | |
30939770 UH |
177 | sr_err("la8: %s: can't get divcount, samplerate invalid", |
178 | __func__); | |
f4314d7e UH |
179 | return 0xff; |
180 | } | |
181 | ||
182 | return (SR_MHZ(100) / samplerate) - 1; | |
183 | } | |
184 | ||
185 | /** | |
186 | * Write data of a certain length to the LA8's FTDI device. | |
187 | * | |
188 | * @param la8 The LA8 struct containing private per-device-instance data. | |
189 | * @param buf The buffer containing the data to write. | |
190 | * @param size The number of bytes to write. | |
191 | * @return The number of bytes written, or a negative value upon errors. | |
192 | */ | |
193 | static int la8_write(struct la8 *la8, uint8_t *buf, int size) | |
194 | { | |
195 | int bytes_written; | |
196 | ||
197 | if (!la8) { | |
30939770 | 198 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 199 | return SR_ERR_ARG; |
f4314d7e UH |
200 | } |
201 | ||
202 | if (!la8->ftdic) { | |
30939770 | 203 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 204 | return SR_ERR_ARG; |
f4314d7e UH |
205 | } |
206 | ||
207 | if (!buf) { | |
30939770 | 208 | sr_err("la8: %s: buf was NULL", __func__); |
8703f512 | 209 | return SR_ERR_ARG; |
f4314d7e UH |
210 | } |
211 | ||
212 | if (size < 0) { | |
30939770 | 213 | sr_err("la8: %s: size was < 0", __func__); |
8703f512 | 214 | return SR_ERR_ARG; |
f4314d7e UH |
215 | } |
216 | ||
217 | bytes_written = ftdi_write_data(la8->ftdic, buf, size); | |
218 | ||
219 | if (bytes_written < 0) { | |
b08024a8 UH |
220 | sr_warn("la8: %s: ftdi_write_data: (%d) %s", __func__, |
221 | bytes_written, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
222 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
223 | } else if (bytes_written != size) { | |
b08024a8 UH |
224 | sr_warn("la8: %s: bytes to write: %d, bytes written: %d", |
225 | __func__, size, bytes_written); | |
f4314d7e UH |
226 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
227 | } | |
228 | ||
229 | return bytes_written; | |
230 | } | |
231 | ||
232 | /** | |
233 | * Read a certain amount of bytes from the LA8's FTDI device. | |
234 | * | |
235 | * @param la8 The LA8 struct containing private per-device-instance data. | |
236 | * @param buf The buffer where the received data will be stored. | |
237 | * @param size The number of bytes to read. | |
238 | * @return The number of bytes read, or a negative value upon errors. | |
239 | */ | |
240 | static int la8_read(struct la8 *la8, uint8_t *buf, int size) | |
241 | { | |
242 | int bytes_read; | |
243 | ||
244 | if (!la8) { | |
30939770 | 245 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 246 | return SR_ERR_ARG; |
f4314d7e UH |
247 | } |
248 | ||
249 | if (!la8->ftdic) { | |
30939770 | 250 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 251 | return SR_ERR_ARG; |
f4314d7e UH |
252 | } |
253 | ||
254 | if (!buf) { | |
30939770 | 255 | sr_err("la8: %s: buf was NULL", __func__); |
8703f512 | 256 | return SR_ERR_ARG; |
f4314d7e UH |
257 | } |
258 | ||
259 | if (size <= 0) { | |
30939770 | 260 | sr_err("la8: %s: size was <= 0", __func__); |
8703f512 | 261 | return SR_ERR_ARG; |
f4314d7e UH |
262 | } |
263 | ||
264 | bytes_read = ftdi_read_data(la8->ftdic, buf, size); | |
265 | ||
266 | if (bytes_read < 0) { | |
b08024a8 UH |
267 | sr_warn("la8: %s: ftdi_read_data: (%d) %s", __func__, |
268 | bytes_read, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 269 | } else if (bytes_read != size) { |
b08024a8 UH |
270 | // sr_warn("la8: %s: bytes to read: %d, bytes read: %d", |
271 | // __func__, size, bytes_read); | |
f4314d7e UH |
272 | } |
273 | ||
274 | return bytes_read; | |
275 | } | |
276 | ||
277 | static int la8_close(struct la8 *la8) | |
278 | { | |
279 | int ret; | |
280 | ||
281 | if (!la8) { | |
30939770 | 282 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 283 | return SR_ERR_ARG; |
f4314d7e UH |
284 | } |
285 | ||
286 | if (!la8->ftdic) { | |
30939770 | 287 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 288 | return SR_ERR_ARG; |
f4314d7e UH |
289 | } |
290 | ||
291 | if ((ret = ftdi_usb_close(la8->ftdic)) < 0) { | |
b08024a8 UH |
292 | sr_warn("la8: %s: ftdi_usb_close: (%d) %s", |
293 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
294 | } |
295 | ||
296 | return ret; | |
297 | } | |
298 | ||
299 | /** | |
300 | * Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic. | |
301 | * | |
302 | * @param la8 The LA8 struct containing private per-device-instance data. | |
303 | * @return SR_OK upon success, SR_ERR upon failure. | |
304 | */ | |
305 | static int la8_close_usb_reset_sequencer(struct la8 *la8) | |
306 | { | |
307 | /* Magic sequence of bytes for resetting the LA8 sequencer logic. */ | |
308 | uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; | |
309 | int ret; | |
310 | ||
b08024a8 | 311 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
312 | |
313 | if (!la8) { | |
30939770 | 314 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 315 | return SR_ERR_ARG; |
f4314d7e UH |
316 | } |
317 | ||
318 | if (!la8->ftdic) { | |
30939770 | 319 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 320 | return SR_ERR_ARG; |
f4314d7e UH |
321 | } |
322 | ||
323 | if (la8->ftdic->usb_dev) { | |
324 | /* Reset the LA8 sequencer logic, then wait 100ms. */ | |
b08024a8 | 325 | sr_dbg("la8: resetting sequencer logic"); |
f4314d7e UH |
326 | (void) la8_write(la8, buf, 8); /* Ignore errors. */ |
327 | g_usleep(100 * 1000); | |
328 | ||
329 | /* Purge FTDI buffers, then reset and close the FTDI device. */ | |
b08024a8 | 330 | sr_dbg("la8: purging buffers, resetting+closing FTDI device"); |
f4314d7e UH |
331 | |
332 | /* Log errors, but ignore them (i.e., don't abort). */ | |
333 | if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) | |
b08024a8 | 334 | sr_warn("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
f4314d7e UH |
335 | __func__, ret, ftdi_get_error_string(la8->ftdic)); |
336 | if ((ret = ftdi_usb_reset(la8->ftdic)) < 0) | |
b08024a8 UH |
337 | sr_warn("la8: %s: ftdi_usb_reset: (%d) %s", __func__, |
338 | ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 339 | if ((ret = ftdi_usb_close(la8->ftdic)) < 0) |
b08024a8 UH |
340 | sr_warn("la8: %s: ftdi_usb_close: (%d) %s", __func__, |
341 | ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 342 | } else { |
b08024a8 | 343 | sr_dbg("la8: %s: usb_dev was NULL, nothing to do", __func__); |
f4314d7e UH |
344 | } |
345 | ||
346 | ftdi_free(la8->ftdic); /* Returns void. */ | |
347 | la8->ftdic = NULL; | |
348 | ||
349 | return SR_OK; | |
350 | } | |
351 | ||
352 | /** | |
353 | * Reset the ChronoVu LA8. | |
354 | * | |
355 | * The LA8 must be reset after a failed read/write operation or upon timeouts. | |
356 | * | |
357 | * @param la8 The LA8 struct containing private per-device-instance data. | |
358 | * @return SR_OK upon success, SR_ERR upon failure. | |
359 | */ | |
360 | static int la8_reset(struct la8 *la8) | |
361 | { | |
362 | uint8_t buf[4096]; | |
363 | time_t done, now; | |
364 | int bytes_read; | |
365 | ||
366 | if (!la8) { | |
30939770 | 367 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 368 | return SR_ERR_ARG; |
f4314d7e UH |
369 | } |
370 | ||
371 | if (!la8->ftdic) { | |
30939770 | 372 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 373 | return SR_ERR_ARG; |
f4314d7e UH |
374 | } |
375 | ||
b08024a8 | 376 | sr_dbg("la8: resetting the device"); |
f4314d7e UH |
377 | |
378 | /* | |
379 | * Purge pending read data from the FTDI hardware FIFO until | |
380 | * no more data is left, or a timeout occurs (after 20s). | |
381 | */ | |
382 | done = 20 + time(NULL); | |
383 | do { | |
384 | /* TODO: Ignore errors? Check for < 0 at least! */ | |
385 | bytes_read = la8_read(la8, (uint8_t *)&buf, 4096); | |
386 | now = time(NULL); | |
387 | } while ((done > now) && (bytes_read > 0)); | |
388 | ||
389 | /* Reset the LA8 sequencer logic and close the USB port. */ | |
390 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ | |
391 | ||
b08024a8 | 392 | sr_dbg("la8: device reset finished"); |
f4314d7e UH |
393 | |
394 | return SR_OK; | |
395 | } | |
396 | ||
ecaf59db UH |
397 | static int configure_probes(struct la8 *la8, GSList *probes) |
398 | { | |
399 | struct sr_probe *probe; | |
400 | GSList *l; | |
401 | uint8_t probe_bit; | |
402 | char *tc; | |
403 | ||
404 | la8->trigger_pattern = 0; | |
405 | la8->trigger_mask = 0; /* Default to "don't care" for all probes. */ | |
406 | ||
407 | for (l = probes; l; l = l->next) { | |
408 | probe = (struct sr_probe *)l->data; | |
409 | ||
410 | if (!probe) { | |
411 | sr_err("la8: %s: probe was NULL", __func__); | |
412 | return SR_ERR; | |
413 | } | |
414 | ||
415 | /* Skip disabled probes. */ | |
416 | if (!probe->enabled) | |
417 | continue; | |
418 | ||
419 | /* Skip (enabled) probes with no configured trigger. */ | |
420 | if (!probe->trigger) | |
421 | continue; | |
422 | ||
423 | /* Note: Must only be run if probe->trigger != NULL. */ | |
424 | if (probe->index < 0 || probe->index > 7) { | |
425 | sr_err("la8: %s: invalid probe index %d, must be " | |
426 | "between 0 and 7", __func__, probe->index); | |
427 | return SR_ERR; | |
428 | } | |
429 | ||
430 | probe_bit = (1 << (probe->index - 1)); | |
431 | ||
432 | /* Configure the probe's trigger mask and trigger pattern. */ | |
433 | for (tc = probe->trigger; tc && *tc; tc++) { | |
434 | la8->trigger_mask |= probe_bit; | |
435 | ||
436 | /* Sanity check, LA8 only supports low/high trigger. */ | |
437 | if (*tc != '0' && *tc != '1') { | |
438 | sr_err("la8: %s: invalid trigger '%c', only " | |
439 | "'0'/'1' supported", __func__, *tc); | |
440 | return SR_ERR; | |
441 | } | |
442 | ||
443 | if (*tc == '1') | |
444 | la8->trigger_pattern |= probe_bit; | |
445 | } | |
446 | } | |
447 | ||
448 | sr_dbg("la8: %s: trigger_mask = 0x%x, trigger_pattern = 0x%x", | |
449 | __func__, la8->trigger_mask, la8->trigger_pattern); | |
450 | ||
451 | return SR_OK; | |
452 | } | |
453 | ||
f4314d7e UH |
454 | static int hw_init(const char *deviceinfo) |
455 | { | |
456 | int ret; | |
457 | struct sr_device_instance *sdi; | |
458 | struct la8 *la8; | |
459 | ||
b08024a8 | 460 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
461 | |
462 | /* Avoid compiler errors. */ | |
463 | deviceinfo = deviceinfo; | |
464 | ||
465 | /* Allocate memory for our private driver context. */ | |
2e82a17b | 466 | if (!(la8 = g_try_malloc(sizeof(struct la8)))) { |
30939770 | 467 | sr_err("la8: %s: struct la8 malloc failed", __func__); |
f4314d7e UH |
468 | ret = SR_ERR_MALLOC; |
469 | goto err_free_nothing; | |
470 | } | |
471 | ||
472 | /* Set some sane defaults. */ | |
473 | la8->ftdic = NULL; | |
474 | la8->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
475 | la8->limit_msec = 0; | |
476 | la8->limit_samples = 0; | |
f4314d7e UH |
477 | la8->session_id = NULL; |
478 | la8->mangled_buf = NULL; | |
479 | la8->final_buf = NULL; | |
480 | la8->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
481 | la8->trigger_mask = 0x00; /* All probes are "don't care". */ | |
482 | la8->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
483 | la8->done = 0; | |
484 | la8->block_counter = 0; | |
485 | la8->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
486 | ||
487 | /* Allocate memory for the raw (mangled) data from the LA8. */ | |
2e82a17b | 488 | if (!(la8->mangled_buf = g_try_malloc(SDRAM_SIZE))) { |
30939770 | 489 | sr_err("la8: %s: mangled_buf malloc failed", __func__); |
f4314d7e UH |
490 | ret = SR_ERR_MALLOC; |
491 | goto err_free_la8; | |
492 | } | |
493 | ||
494 | /* Allocate memory where we'll store the de-mangled data. */ | |
2e82a17b | 495 | if (!(la8->final_buf = g_try_malloc(SDRAM_SIZE))) { |
30939770 | 496 | sr_err("la8: %s: final_buf malloc failed", __func__); |
f4314d7e UH |
497 | ret = SR_ERR_MALLOC; |
498 | goto err_free_mangled_buf; | |
499 | } | |
500 | ||
501 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
502 | if (!(la8->ftdic = ftdi_new())) { | |
30939770 | 503 | sr_err("la8: %s: ftdi_new failed", __func__); |
f4314d7e UH |
504 | ret = SR_ERR; /* TODO: More specific error? */ |
505 | goto err_free_final_buf; | |
506 | } | |
507 | ||
508 | /* Check for the device and temporarily open it. */ | |
509 | if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID, | |
510 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
30939770 UH |
511 | sr_err("la8: %s: ftdi_usb_open_desc: (%d) %s", |
512 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
513 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
514 | ret = SR_ERR; /* TODO: More specific error? */ | |
515 | goto err_free_ftdic; | |
516 | } | |
b08024a8 | 517 | sr_dbg("la8: found device"); |
f4314d7e UH |
518 | |
519 | /* Register the device with libsigrok. */ | |
520 | sdi = sr_device_instance_new(0, SR_ST_INITIALIZING, | |
521 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
522 | if (!sdi) { | |
30939770 | 523 | sr_err("la8: %s: sr_device_instance_new failed", __func__); |
f4314d7e UH |
524 | ret = SR_ERR; /* TODO: More specific error? */ |
525 | goto err_close_ftdic; | |
526 | } | |
527 | ||
528 | sdi->priv = la8; | |
529 | ||
530 | device_instances = g_slist_append(device_instances, sdi); | |
531 | ||
b08024a8 | 532 | sr_dbg("la8: %s finished successfully", __func__); |
f4314d7e UH |
533 | |
534 | /* Close device. We'll reopen it again when we need it. */ | |
535 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
536 | ||
537 | // return SR_OK; /* TODO */ | |
538 | return 1; | |
539 | ||
540 | err_close_ftdic: | |
541 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
542 | err_free_ftdic: | |
2e82a17b | 543 | free(la8->ftdic); /* NOT g_free()! */ |
f4314d7e | 544 | err_free_final_buf: |
2e82a17b | 545 | g_free(la8->final_buf); |
f4314d7e | 546 | err_free_mangled_buf: |
2e82a17b | 547 | g_free(la8->mangled_buf); |
f4314d7e | 548 | err_free_la8: |
2e82a17b | 549 | g_free(la8); |
f4314d7e UH |
550 | err_free_nothing: |
551 | // return ret; /* TODO */ | |
552 | return 0; | |
553 | } | |
554 | ||
555 | static int hw_opendev(int device_index) | |
556 | { | |
557 | int ret; | |
558 | struct sr_device_instance *sdi; | |
559 | struct la8 *la8; | |
560 | ||
561 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 562 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 563 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
564 | } |
565 | ||
566 | if (!(la8 = sdi->priv)) { | |
30939770 | 567 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 568 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
569 | } |
570 | ||
b08024a8 | 571 | sr_dbg("la8: opening device"); |
f4314d7e UH |
572 | |
573 | /* Open the device. */ | |
574 | if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID, | |
575 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
30939770 UH |
576 | sr_err("la8: %s: ftdi_usb_open_desc: (%d) %s", |
577 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
578 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
579 | return SR_ERR; | |
580 | } | |
b08024a8 | 581 | sr_dbg("la8: device opened successfully"); |
f4314d7e UH |
582 | |
583 | /* Purge RX/TX buffers in the FTDI chip. */ | |
584 | if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) { | |
30939770 UH |
585 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
586 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
587 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
588 | goto err_opendev_close_ftdic; | |
589 | } | |
b08024a8 | 590 | sr_dbg("la8: FTDI buffers purged successfully"); |
f4314d7e UH |
591 | |
592 | /* Enable flow control in the FTDI chip. */ | |
593 | if ((ret = ftdi_setflowctrl(la8->ftdic, SIO_RTS_CTS_HS)) < 0) { | |
30939770 UH |
594 | sr_err("la8: %s: ftdi_setflowcontrol: (%d) %s", |
595 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
596 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
597 | goto err_opendev_close_ftdic; | |
598 | } | |
b08024a8 | 599 | sr_dbg("la8: FTDI flow control enabled successfully"); |
f4314d7e UH |
600 | |
601 | /* Wait 100ms. */ | |
602 | g_usleep(100 * 1000); | |
603 | ||
604 | sdi->status = SR_ST_ACTIVE; | |
605 | ||
606 | return SR_OK; | |
607 | ||
608 | err_opendev_close_ftdic: | |
609 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
610 | return SR_ERR; | |
611 | } | |
612 | ||
613 | static int set_samplerate(struct sr_device_instance *sdi, uint64_t samplerate) | |
614 | { | |
615 | struct la8 *la8; | |
616 | ||
617 | if (!sdi) { | |
30939770 | 618 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 619 | return SR_ERR_ARG; |
f4314d7e UH |
620 | } |
621 | ||
622 | if (!(la8 = sdi->priv)) { | |
30939770 | 623 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 624 | return SR_ERR_ARG; |
f4314d7e UH |
625 | } |
626 | ||
b08024a8 | 627 | sr_dbg("la8: setting samplerate"); |
f4314d7e UH |
628 | |
629 | fill_supported_samplerates_if_needed(); | |
630 | ||
631 | /* Check if this is a samplerate supported by the hardware. */ | |
632 | if (!is_valid_samplerate(samplerate)) | |
633 | return SR_ERR; | |
634 | ||
635 | /* Set the new samplerate. */ | |
636 | la8->cur_samplerate = samplerate; | |
637 | ||
b08024a8 | 638 | sr_dbg("la8: samplerate set to %" PRIu64 "Hz", la8->cur_samplerate); |
f4314d7e UH |
639 | |
640 | return SR_OK; | |
641 | } | |
642 | ||
643 | static void hw_closedev(int device_index) | |
644 | { | |
645 | struct sr_device_instance *sdi; | |
646 | struct la8 *la8; | |
647 | ||
648 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 649 | sr_err("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
650 | return; |
651 | } | |
652 | ||
653 | if (!(la8 = sdi->priv)) { | |
30939770 | 654 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
655 | return; |
656 | } | |
657 | ||
b08024a8 | 658 | sr_dbg("la8: closing device"); |
f4314d7e UH |
659 | |
660 | if (sdi->status == SR_ST_ACTIVE) { | |
b08024a8 | 661 | sr_dbg("la8: %s: status ACTIVE, closing device", __func__); |
f4314d7e UH |
662 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
663 | } else { | |
b08024a8 | 664 | sr_dbg("la8: %s: status not ACTIVE, nothing to do", __func__); |
f4314d7e UH |
665 | } |
666 | ||
667 | sdi->status = SR_ST_INACTIVE; | |
2f5c8c96 UH |
668 | |
669 | sr_dbg("la8: %s: freeing sample buffers", __func__); | |
670 | free(la8->mangled_buf); | |
671 | free(la8->final_buf); | |
f4314d7e UH |
672 | } |
673 | ||
674 | static void hw_cleanup(void) | |
675 | { | |
676 | GSList *l; | |
677 | struct sr_device_instance *sdi; | |
678 | ||
b08024a8 | 679 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
680 | |
681 | /* Properly close all devices. */ | |
682 | for (l = device_instances; l; l = l->next) { | |
683 | if ((sdi = l->data) == NULL) { | |
30939770 | 684 | sr_warn("la8: %s: sdi was NULL, continuing", __func__); |
f4314d7e UH |
685 | continue; |
686 | } | |
687 | if (sdi->priv != NULL) | |
688 | free(sdi->priv); | |
689 | else | |
30939770 UH |
690 | sr_warn("la8: %s: sdi->priv was NULL, nothing " |
691 | "to do", __func__); | |
f4314d7e UH |
692 | sr_device_instance_free(sdi); /* Returns void. */ |
693 | } | |
694 | g_slist_free(device_instances); /* Returns void. */ | |
695 | device_instances = NULL; | |
696 | } | |
697 | ||
698 | static void *hw_get_device_info(int device_index, int device_info_id) | |
699 | { | |
700 | struct sr_device_instance *sdi; | |
701 | struct la8 *la8; | |
702 | void *info; | |
703 | ||
b08024a8 | 704 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
705 | |
706 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 707 | sr_err("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
708 | return NULL; |
709 | } | |
710 | ||
711 | if (!(la8 = sdi->priv)) { | |
30939770 | 712 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
713 | return NULL; |
714 | } | |
715 | ||
716 | switch (device_info_id) { | |
717 | case SR_DI_INSTANCE: | |
718 | info = sdi; | |
719 | break; | |
720 | case SR_DI_NUM_PROBES: | |
721 | info = GINT_TO_POINTER(NUM_PROBES); | |
722 | break; | |
723 | case SR_DI_SAMPLERATES: | |
724 | fill_supported_samplerates_if_needed(); | |
725 | info = &samplerates; | |
726 | break; | |
727 | case SR_DI_TRIGGER_TYPES: | |
728 | info = (char *)TRIGGER_TYPES; | |
729 | break; | |
730 | case SR_DI_CUR_SAMPLERATE: | |
731 | info = &la8->cur_samplerate; | |
732 | break; | |
733 | default: | |
734 | /* Unknown device info ID, return NULL. */ | |
30939770 | 735 | sr_err("la8: %s: Unknown device info ID", __func__); |
f4314d7e UH |
736 | info = NULL; |
737 | break; | |
738 | } | |
739 | ||
740 | return info; | |
741 | } | |
742 | ||
743 | static int hw_get_status(int device_index) | |
744 | { | |
745 | struct sr_device_instance *sdi; | |
746 | ||
747 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
b08024a8 | 748 | sr_warn("la8: %s: sdi was NULL, device not found", __func__); |
f4314d7e UH |
749 | return SR_ST_NOT_FOUND; |
750 | } | |
751 | ||
b08024a8 | 752 | sr_dbg("la8: %s: returning status %d", __func__, sdi->status); |
f4314d7e UH |
753 | |
754 | return sdi->status; | |
755 | } | |
756 | ||
757 | static int *hw_get_capabilities(void) | |
758 | { | |
b08024a8 | 759 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
760 | |
761 | return capabilities; | |
762 | } | |
763 | ||
764 | static int hw_set_configuration(int device_index, int capability, void *value) | |
765 | { | |
766 | struct sr_device_instance *sdi; | |
767 | struct la8 *la8; | |
768 | ||
b08024a8 | 769 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
770 | |
771 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 772 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 773 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
774 | } |
775 | ||
776 | if (!(la8 = sdi->priv)) { | |
30939770 | 777 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 778 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
779 | } |
780 | ||
781 | switch (capability) { | |
782 | case SR_HWCAP_SAMPLERATE: | |
783 | if (set_samplerate(sdi, *(uint64_t *)value) == SR_ERR) | |
784 | return SR_ERR; | |
b08024a8 | 785 | sr_dbg("la8: SAMPLERATE = %" PRIu64, la8->cur_samplerate); |
f4314d7e UH |
786 | break; |
787 | case SR_HWCAP_PROBECONFIG: | |
ecaf59db UH |
788 | if (configure_probes(la8, (GSList *)value) != SR_OK) { |
789 | sr_err("la8: %s: probe config failed", __func__); | |
790 | return SR_ERR; | |
791 | } | |
f4314d7e UH |
792 | break; |
793 | case SR_HWCAP_LIMIT_MSEC: | |
794 | if (*(uint64_t *)value == 0) { | |
30939770 | 795 | sr_err("la8: %s: LIMIT_MSEC can't be 0", __func__); |
f4314d7e UH |
796 | return SR_ERR; |
797 | } | |
798 | la8->limit_msec = *(uint64_t *)value; | |
b08024a8 | 799 | sr_dbg("la8: LIMIT_MSEC = %" PRIu64, la8->limit_msec); |
f4314d7e UH |
800 | break; |
801 | case SR_HWCAP_LIMIT_SAMPLES: | |
802 | if (*(uint64_t *)value < MIN_NUM_SAMPLES) { | |
30939770 | 803 | sr_err("la8: %s: LIMIT_SAMPLES too small", __func__); |
f4314d7e UH |
804 | return SR_ERR; |
805 | } | |
806 | la8->limit_samples = *(uint64_t *)value; | |
b08024a8 | 807 | sr_dbg("la8: LIMIT_SAMPLES = %" PRIu64, la8->limit_samples); |
f4314d7e UH |
808 | break; |
809 | default: | |
810 | /* Unknown capability, return SR_ERR. */ | |
30939770 | 811 | sr_err("la8: %s: Unknown capability", __func__); |
f4314d7e UH |
812 | return SR_ERR; |
813 | break; | |
814 | } | |
815 | ||
816 | return SR_OK; | |
817 | } | |
818 | ||
819 | /** | |
820 | * Get a block of 4096 bytes of data from the LA8. | |
821 | * | |
822 | * @param la8 The LA8 struct containing private per-device-instance data. | |
823 | * @return SR_OK upon success, or SR_ERR upon errors. | |
824 | */ | |
825 | static int la8_read_block(struct la8 *la8) | |
826 | { | |
827 | int i, byte_offset, m, mi, p, index, bytes_read; | |
828 | time_t now; | |
829 | ||
830 | if (!la8) { | |
30939770 | 831 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 832 | return SR_ERR_ARG; |
f4314d7e UH |
833 | } |
834 | ||
835 | if (!la8->ftdic) { | |
30939770 | 836 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 837 | return SR_ERR_ARG; |
f4314d7e UH |
838 | } |
839 | ||
b08024a8 | 840 | // sr_dbg("la8: %s: reading block %d", __func__, la8->block_counter); |
f4314d7e UH |
841 | |
842 | bytes_read = la8_read(la8, la8->mangled_buf, 4096); | |
843 | ||
844 | /* If first block read got 0 bytes, retry until success or timeout. */ | |
845 | if ((bytes_read == 0) && (la8->block_counter == 0)) { | |
846 | do { | |
b08024a8 | 847 | // sr_dbg("la8: %s: reading block 0 again", __func__); |
f4314d7e UH |
848 | bytes_read = la8_read(la8, la8->mangled_buf, 4096); |
849 | /* TODO: How to handle read errors here? */ | |
850 | now = time(NULL); | |
851 | } while ((la8->done > now) && (bytes_read == 0)); | |
852 | } | |
853 | ||
854 | /* Check if block read was successful or a timeout occured. */ | |
855 | if (bytes_read != 4096) { | |
b08024a8 | 856 | sr_warn("la8: %s: trigger timed out", __func__); |
f4314d7e UH |
857 | (void) la8_reset(la8); /* Ignore errors. */ |
858 | return SR_ERR; | |
859 | } | |
860 | ||
861 | /* De-mangle the data. */ | |
b08024a8 | 862 | // sr_dbg("la8: de-mangling samples of block %d", la8->block_counter); |
f4314d7e UH |
863 | byte_offset = la8->block_counter * 4096; |
864 | m = byte_offset / (1024 * 1024); | |
865 | mi = m * (1024 * 1024); | |
866 | for (i = 0; i < 4096; i++) { | |
867 | p = i & (1 << 0); | |
868 | index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; | |
869 | index += (la8->divcount == 0) ? p : (1 - p); | |
870 | la8->final_buf[index] = la8->mangled_buf[i]; | |
871 | } | |
872 | ||
873 | return SR_OK; | |
874 | } | |
875 | ||
876 | static int receive_data(int fd, int revents, void *user_data) | |
877 | { | |
878 | int i, ret; | |
879 | struct sr_device_instance *sdi; | |
880 | struct sr_datafeed_packet packet; | |
881 | struct la8 *la8; | |
882 | ||
883 | /* Avoid compiler errors. */ | |
884 | fd = fd; | |
885 | revents = revents; | |
886 | ||
887 | if (!(sdi = user_data)) { | |
30939770 | 888 | sr_err("la8: %s: user_data was NULL", __func__); |
f4314d7e UH |
889 | return FALSE; |
890 | } | |
891 | ||
892 | if (!(la8 = sdi->priv)) { | |
30939770 | 893 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
894 | return FALSE; |
895 | } | |
896 | ||
897 | /* Get one block of data (4096 bytes). */ | |
898 | if ((ret = la8_read_block(la8)) < 0) { | |
30939770 | 899 | sr_err("la8: %s: la8_read_block error: %d", __func__, ret); |
ecaf59db | 900 | hw_stop_acquisition(sdi->index, user_data); |
f4314d7e UH |
901 | return FALSE; |
902 | } | |
903 | ||
904 | /* We need to get exactly 2048 blocks (i.e. 8MB) of data. */ | |
905 | if (la8->block_counter != 2047) { | |
906 | la8->block_counter++; | |
907 | return TRUE; | |
908 | } | |
909 | ||
b08024a8 | 910 | sr_dbg("la8: sampling finished, sending data to session bus now"); |
f4314d7e UH |
911 | |
912 | /* All data was received and demangled, send it to the session bus. */ | |
913 | for (i = 0; i < 2048; i++) { | |
914 | /* Send a 4096 byte SR_DF_LOGIC packet to the session bus. */ | |
b08024a8 | 915 | // sr_dbg("la8: %s: sending SR_DF_LOGIC packet", __func__); |
f4314d7e UH |
916 | packet.type = SR_DF_LOGIC; |
917 | packet.length = 4096; | |
918 | packet.unitsize = 1; | |
919 | packet.payload = la8->final_buf + (i * 4096); | |
920 | sr_session_bus(la8->session_id, &packet); | |
921 | } | |
922 | ||
923 | hw_stop_acquisition(sdi->index, user_data); | |
924 | ||
925 | // return FALSE; /* FIXME? */ | |
926 | return TRUE; | |
927 | } | |
928 | ||
929 | static int hw_start_acquisition(int device_index, gpointer session_device_id) | |
930 | { | |
931 | struct sr_device_instance *sdi; | |
932 | struct la8 *la8; | |
933 | struct sr_datafeed_packet packet; | |
934 | struct sr_datafeed_header header; | |
935 | uint8_t buf[4]; | |
936 | int bytes_written; | |
937 | ||
b08024a8 | 938 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
939 | |
940 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 941 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 942 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
943 | } |
944 | ||
945 | if (!(la8 = sdi->priv)) { | |
30939770 | 946 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 947 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
948 | } |
949 | ||
950 | if (!la8->ftdic) { | |
30939770 | 951 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 952 | return SR_ERR_ARG; |
f4314d7e UH |
953 | } |
954 | ||
955 | la8->divcount = samplerate_to_divcount(la8->cur_samplerate); | |
956 | if (la8->divcount == 0xff) { | |
30939770 | 957 | sr_err("la8: %s: invalid divcount/samplerate", __func__); |
f4314d7e UH |
958 | return SR_ERR; |
959 | } | |
960 | ||
961 | /* Fill acquisition parameters into buf[]. */ | |
962 | buf[0] = la8->divcount; | |
963 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
964 | buf[2] = la8->trigger_pattern; | |
965 | buf[3] = la8->trigger_mask; | |
966 | ||
967 | /* Start acquisition. */ | |
968 | bytes_written = la8_write(la8, buf, 4); | |
969 | ||
970 | if (bytes_written < 0) { | |
30939770 | 971 | sr_err("la8: acquisition failed to start"); |
f4314d7e UH |
972 | return SR_ERR; |
973 | } else if (bytes_written != 4) { | |
30939770 | 974 | sr_err("la8: acquisition failed to start"); |
f4314d7e UH |
975 | return SR_ERR; /* TODO: Other error and return code? */ |
976 | } | |
977 | ||
b08024a8 | 978 | sr_dbg("la8: acquisition started successfully"); |
f4314d7e UH |
979 | |
980 | la8->session_id = session_device_id; | |
981 | ||
982 | /* Send header packet to the session bus. */ | |
b08024a8 | 983 | sr_dbg("la8: %s: sending SR_DF_HEADER", __func__); |
f4314d7e UH |
984 | packet.type = SR_DF_HEADER; |
985 | packet.length = sizeof(struct sr_datafeed_header); | |
986 | packet.unitsize = 0; | |
987 | packet.payload = &header; | |
988 | header.feed_version = 1; | |
989 | gettimeofday(&header.starttime, NULL); | |
990 | header.samplerate = la8->cur_samplerate; | |
991 | header.protocol_id = SR_PROTO_RAW; | |
4bc5fd45 | 992 | header.num_logic_probes = NUM_PROBES; |
f4314d7e UH |
993 | header.num_analog_probes = 0; |
994 | sr_session_bus(session_device_id, &packet); | |
995 | ||
996 | /* Time when we should be done (for detecting trigger timeouts). */ | |
997 | la8->done = (la8->divcount + 1) * 0.08388608 + time(NULL) | |
998 | + la8->trigger_timeout; | |
999 | la8->block_counter = 0; | |
1000 | ||
1001 | /* Hook up a dummy handler to receive data from the LA8. */ | |
1002 | sr_source_add(-1, G_IO_IN, 0, receive_data, sdi); | |
1003 | ||
1004 | return SR_OK; | |
1005 | } | |
1006 | ||
1007 | static void hw_stop_acquisition(int device_index, gpointer session_device_id) | |
1008 | { | |
1009 | struct sr_device_instance *sdi; | |
1010 | struct la8 *la8; | |
1011 | struct sr_datafeed_packet packet; | |
1012 | ||
b08024a8 | 1013 | sr_dbg("la8: stopping acquisition"); |
f4314d7e UH |
1014 | |
1015 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 1016 | sr_err("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
1017 | return; |
1018 | } | |
1019 | ||
1020 | if (!(la8 = sdi->priv)) { | |
30939770 | 1021 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
1022 | return; |
1023 | } | |
1024 | ||
f4314d7e | 1025 | /* Send end packet to the session bus. */ |
b08024a8 | 1026 | sr_dbg("la8: %s: sending SR_DF_END", __func__); |
f4314d7e UH |
1027 | packet.type = SR_DF_END; |
1028 | packet.length = 0; | |
1029 | packet.unitsize = 0; | |
1030 | packet.payload = NULL; | |
1031 | sr_session_bus(session_device_id, &packet); | |
1032 | } | |
1033 | ||
1034 | struct sr_device_plugin chronovu_la8_plugin_info = { | |
1035 | .name = "chronovu-la8", | |
1036 | .longname = "ChronoVu LA8", | |
1037 | .api_version = 1, | |
1038 | .init = hw_init, | |
1039 | .cleanup = hw_cleanup, | |
1040 | .open = hw_opendev, | |
1041 | .close = hw_closedev, | |
1042 | .get_device_info = hw_get_device_info, | |
1043 | .get_status = hw_get_status, | |
1044 | .get_capabilities = hw_get_capabilities, | |
1045 | .set_configuration = hw_set_configuration, | |
1046 | .start_acquisition = hw_start_acquisition, | |
1047 | .stop_acquisition = hw_stop_acquisition, | |
1048 | }; |