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Add support for the Voltcraft M-4650CR.
[libsigrok.git] / hwdriver.c
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1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
5 *
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20#include <stdlib.h>
21#include <stdio.h>
22#include <sys/types.h>
23#include <dirent.h>
24#include <string.h>
25#include <glib.h>
26#include "config.h" /* Needed for HAVE_LIBUSB_1_0 and others. */
27#include "libsigrok.h"
28#include "libsigrok-internal.h"
29
30/* Message logging helpers with subsystem-specific prefix string. */
31#define LOG_PREFIX "hwdriver: "
32#define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
33#define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
34#define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
35#define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
36#define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
37#define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
38
39/**
40 * @file
41 *
42 * Hardware driver handling in libsigrok.
43 */
44
45/**
46 * @defgroup grp_driver Hardware drivers
47 *
48 * Hardware driver handling in libsigrok.
49 *
50 * @{
51 */
52
53static struct sr_config_info sr_config_info_data[] = {
54 {SR_CONF_CONN, SR_T_CHAR, "conn",
55 "Connection", NULL},
56 {SR_CONF_SERIALCOMM, SR_T_CHAR, "serialcomm",
57 "Serial communication", NULL},
58 {SR_CONF_SAMPLERATE, SR_T_UINT64, "samplerate",
59 "Sample rate", NULL},
60 {SR_CONF_CAPTURE_RATIO, SR_T_UINT64, "captureratio",
61 "Pre-trigger capture ratio", NULL},
62 {SR_CONF_PATTERN_MODE, SR_T_CHAR, "pattern",
63 "Pattern generator mode", NULL},
64 {SR_CONF_TRIGGER_TYPE, SR_T_CHAR, "triggertype",
65 "Trigger types", NULL},
66 {SR_CONF_EXTERNAL_CLOCK, SR_T_BOOL, "external_clock",
67 "External clock mode", NULL},
68 {SR_CONF_SWAP, SR_T_BOOL, "swap",
69 "Swap channel order", NULL},
70 {SR_CONF_RLE, SR_T_BOOL, "rle",
71 "Run Length Encoding", NULL},
72 {SR_CONF_TRIGGER_SLOPE, SR_T_UINT64, "triggerslope",
73 "Trigger slope", NULL},
74 {SR_CONF_TRIGGER_SOURCE, SR_T_CHAR, "triggersource",
75 "Trigger source", NULL},
76 {SR_CONF_HORIZ_TRIGGERPOS, SR_T_FLOAT, "horiz_triggerpos",
77 "Horizontal trigger position", NULL},
78 {SR_CONF_BUFFERSIZE, SR_T_UINT64, "buffersize",
79 "Buffer size", NULL},
80 {SR_CONF_TIMEBASE, SR_T_RATIONAL_PERIOD, "timebase",
81 "Time base", NULL},
82 {SR_CONF_FILTER, SR_T_CHAR, "filter",
83 "Filter targets", NULL},
84 {SR_CONF_VDIV, SR_T_RATIONAL_VOLT, "vdiv",
85 "Volts/div", NULL},
86 {SR_CONF_COUPLING, SR_T_CHAR, "coupling",
87 "Coupling", NULL},
88 {SR_CONF_DATALOG, SR_T_BOOL, "datalog",
89 "Datalog", NULL},
90 {SR_CONF_SPL_WEIGHT_FREQ, SR_T_CHAR, "spl_weight_freq",
91 "Sound pressure level frequency weighting", NULL},
92 {SR_CONF_SPL_WEIGHT_TIME, SR_T_CHAR, "spl_weight_time",
93 "Sound pressure level time weighting", NULL},
94 {SR_CONF_HOLD_MAX, SR_T_BOOL, "hold_max",
95 "Hold max", NULL},
96 {SR_CONF_HOLD_MIN, SR_T_BOOL, "hold_min",
97 "Hold min", NULL},
98 {SR_CONF_SPL_MEASUREMENT_RANGE, SR_T_UINT64_RANGE, "spl_meas_range",
99 "Sound pressure level measurement range", NULL},
100 {SR_CONF_VOLTAGE_THRESHOLD, SR_T_DOUBLE_RANGE, "voltage_threshold",
101 "Voltage threshold", NULL },
102 {SR_CONF_POWER_OFF, SR_T_BOOL, "power_off",
103 "Power off", NULL},
104 {SR_CONF_DATA_SOURCE, SR_T_CHAR, "data_source",
105 "Data source", NULL},
106 {0, 0, NULL, NULL, NULL},
107};
108
109/** @cond PRIVATE */
110#ifdef HAVE_HW_BRYMEN_DMM
111extern SR_PRIV struct sr_dev_driver brymen_bm857_driver_info;
112#endif
113#ifdef HAVE_HW_CEM_DT_885X
114extern SR_PRIV struct sr_dev_driver cem_dt_885x_driver_info;
115#endif
116#ifdef HAVE_HW_CENTER_3XX
117extern SR_PRIV struct sr_dev_driver center_309_driver_info;
118extern SR_PRIV struct sr_dev_driver voltcraft_k204_driver_info;
119#endif
120#ifdef HAVE_HW_COLEAD_SLM
121extern SR_PRIV struct sr_dev_driver colead_slm_driver_info;
122#endif
123#ifdef HAVE_HW_DEMO
124extern SR_PRIV struct sr_dev_driver demo_driver_info;
125#endif
126#ifdef HAVE_HW_IKALOGIC_SCANALOGIC2
127extern SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info;
128#endif
129#ifdef HAVE_HW_IKALOGIC_SCANAPLUS
130extern SR_PRIV struct sr_dev_driver ikalogic_scanaplus_driver_info;
131#endif
132#ifdef HAVE_HW_KECHENG_KC_330B
133extern SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info;
134#endif
135#ifdef HAVE_HW_LASCAR_EL_USB
136extern SR_PRIV struct sr_dev_driver lascar_el_usb_driver_info;
137#endif
138#ifdef HAVE_HW_MIC_985XX
139extern SR_PRIV struct sr_dev_driver mic_98581_driver_info;
140extern SR_PRIV struct sr_dev_driver mic_98583_driver_info;
141#endif
142#ifdef HAVE_HW_NORMA_DMM
143extern SR_PRIV struct sr_dev_driver norma_dmm_driver_info;
144#endif
145#ifdef HAVE_HW_OLS
146extern SR_PRIV struct sr_dev_driver ols_driver_info;
147#endif
148#ifdef HAVE_HW_RIGOL_DS1XX2
149extern SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info;
150#endif
151#ifdef HAVE_HW_SALEAE_LOGIC16
152extern SR_PRIV struct sr_dev_driver saleae_logic16_driver_info;
153#endif
154#ifdef HAVE_HW_TELEINFO
155extern SR_PRIV struct sr_dev_driver teleinfo_driver_info;
156#endif
157#ifdef HAVE_HW_TONDAJ_SL_814
158extern SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info;
159#endif
160#ifdef HAVE_HW_UNI_T_UT32X
161extern SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info;
162#endif
163#ifdef HAVE_HW_VICTOR_DMM
164extern SR_PRIV struct sr_dev_driver victor_dmm_driver_info;
165#endif
166#ifdef HAVE_HW_ZEROPLUS_LOGIC_CUBE
167extern SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
168#endif
169#ifdef HAVE_HW_ASIX_SIGMA
170extern SR_PRIV struct sr_dev_driver asix_sigma_driver_info;
171#endif
172#ifdef HAVE_HW_CHRONOVU_LA8
173extern SR_PRIV struct sr_dev_driver chronovu_la8_driver_info;
174#endif
175#ifdef HAVE_HW_LINK_MSO19
176extern SR_PRIV struct sr_dev_driver link_mso19_driver_info;
177#endif
178#ifdef HAVE_HW_ALSA
179extern SR_PRIV struct sr_dev_driver alsa_driver_info;
180#endif
181#ifdef HAVE_HW_FX2LAFW
182extern SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
183#endif
184#ifdef HAVE_HW_HANTEK_DSO
185extern SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
186#endif
187#ifdef HAVE_HW_AGILENT_DMM
188extern SR_PRIV struct sr_dev_driver agdmm_driver_info;
189#endif
190#ifdef HAVE_HW_FLUKE_DMM
191extern SR_PRIV struct sr_dev_driver flukedmm_driver_info;
192#endif
193#ifdef HAVE_HW_SERIAL_DMM
194extern SR_PRIV struct sr_dev_driver digitek_dt4000zc_driver_info;
195extern SR_PRIV struct sr_dev_driver tekpower_tp4000zc_driver_info;
196extern SR_PRIV struct sr_dev_driver metex_me31_driver_info;
197extern SR_PRIV struct sr_dev_driver peaktech_3410_driver_info;
198extern SR_PRIV struct sr_dev_driver mastech_mas345_driver_info;
199extern SR_PRIV struct sr_dev_driver va_va18b_driver_info;
200extern SR_PRIV struct sr_dev_driver metex_m3640d_driver_info;
201extern SR_PRIV struct sr_dev_driver peaktech_4370_driver_info;
202extern SR_PRIV struct sr_dev_driver pce_pce_dm32_driver_info;
203extern SR_PRIV struct sr_dev_driver radioshack_22_168_driver_info;
204extern SR_PRIV struct sr_dev_driver radioshack_22_805_driver_info;
205extern SR_PRIV struct sr_dev_driver radioshack_22_812_driver_info;
206extern SR_PRIV struct sr_dev_driver tecpel_dmm_8061_ser_driver_info;
207extern SR_PRIV struct sr_dev_driver voltcraft_m3650d_driver_info;
208extern SR_PRIV struct sr_dev_driver voltcraft_m4650cr_driver_info;
209extern SR_PRIV struct sr_dev_driver voltcraft_vc820_ser_driver_info;
210extern SR_PRIV struct sr_dev_driver voltcraft_vc830_ser_driver_info;
211extern SR_PRIV struct sr_dev_driver voltcraft_vc840_ser_driver_info;
212extern SR_PRIV struct sr_dev_driver uni_t_ut60a_ser_driver_info;
213extern SR_PRIV struct sr_dev_driver uni_t_ut60e_ser_driver_info;
214extern SR_PRIV struct sr_dev_driver uni_t_ut61d_ser_driver_info;
215extern SR_PRIV struct sr_dev_driver uni_t_ut61e_ser_driver_info;
216extern SR_PRIV struct sr_dev_driver iso_tech_idm103n_driver_info;
217#endif
218#ifdef HAVE_HW_UNI_T_DMM
219extern SR_PRIV struct sr_dev_driver tecpel_dmm_8061_driver_info;
220extern SR_PRIV struct sr_dev_driver uni_t_ut60a_driver_info;
221extern SR_PRIV struct sr_dev_driver uni_t_ut60e_driver_info;
222extern SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info;
223extern SR_PRIV struct sr_dev_driver uni_t_ut61e_driver_info;
224extern SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info;
225extern SR_PRIV struct sr_dev_driver voltcraft_vc830_driver_info;
226extern SR_PRIV struct sr_dev_driver voltcraft_vc840_driver_info;
227#endif
228/** @endcond */
229
230static struct sr_dev_driver *drivers_list[] = {
231#ifdef HAVE_HW_BRYMEN_DMM
232 &brymen_bm857_driver_info,
233#endif
234#ifdef HAVE_HW_CEM_DT_885X
235 &cem_dt_885x_driver_info,
236#endif
237#ifdef HAVE_HW_CENTER_3XX
238 &center_309_driver_info,
239 &voltcraft_k204_driver_info,
240#endif
241#ifdef HAVE_HW_COLEAD_SLM
242 &colead_slm_driver_info,
243#endif
244#ifdef HAVE_HW_DEMO
245 &demo_driver_info,
246#endif
247#ifdef HAVE_HW_IKALOGIC_SCANALOGIC2
248 &ikalogic_scanalogic2_driver_info,
249#endif
250#ifdef HAVE_HW_IKALOGIC_SCANAPLUS
251 &ikalogic_scanaplus_driver_info,
252#endif
253#ifdef HAVE_HW_KECHENG_KC_330B
254 &kecheng_kc_330b_driver_info,
255#endif
256#ifdef HAVE_HW_LASCAR_EL_USB
257 &lascar_el_usb_driver_info,
258#endif
259#ifdef HAVE_HW_MIC_985XX
260 &mic_98581_driver_info,
261 &mic_98583_driver_info,
262#endif
263#ifdef HAVE_HW_NORMA_DMM
264 &norma_dmm_driver_info,
265#endif
266#ifdef HAVE_HW_OLS
267 &ols_driver_info,
268#endif
269#ifdef HAVE_HW_RIGOL_DS1XX2
270 &rigol_ds1xx2_driver_info,
271#endif
272#ifdef HAVE_HW_SALEAE_LOGIC16
273 &saleae_logic16_driver_info,
274#endif
275#ifdef HAVE_HW_TELEINFO
276 &teleinfo_driver_info,
277#endif
278#ifdef HAVE_HW_TONDAJ_SL_814
279 &tondaj_sl_814_driver_info,
280#endif
281#ifdef HAVE_HW_UNI_T_UT32X
282 &uni_t_ut32x_driver_info,
283#endif
284#ifdef HAVE_HW_VICTOR_DMM
285 &victor_dmm_driver_info,
286#endif
287#ifdef HAVE_HW_ZEROPLUS_LOGIC_CUBE
288 &zeroplus_logic_cube_driver_info,
289#endif
290#ifdef HAVE_HW_ASIX_SIGMA
291 &asix_sigma_driver_info,
292#endif
293#ifdef HAVE_HW_CHRONOVU_LA8
294 &chronovu_la8_driver_info,
295#endif
296#ifdef HAVE_HW_LINK_MSO19
297 &link_mso19_driver_info,
298#endif
299#ifdef HAVE_HW_ALSA
300 &alsa_driver_info,
301#endif
302#ifdef HAVE_HW_FX2LAFW
303 &fx2lafw_driver_info,
304#endif
305#ifdef HAVE_HW_HANTEK_DSO
306 &hantek_dso_driver_info,
307#endif
308#ifdef HAVE_HW_AGILENT_DMM
309 &agdmm_driver_info,
310#endif
311#ifdef HAVE_HW_FLUKE_DMM
312 &flukedmm_driver_info,
313#endif
314#ifdef HAVE_HW_SERIAL_DMM
315 &digitek_dt4000zc_driver_info,
316 &tekpower_tp4000zc_driver_info,
317 &metex_me31_driver_info,
318 &peaktech_3410_driver_info,
319 &mastech_mas345_driver_info,
320 &va_va18b_driver_info,
321 &metex_m3640d_driver_info,
322 &peaktech_4370_driver_info,
323 &pce_pce_dm32_driver_info,
324 &radioshack_22_168_driver_info,
325 &radioshack_22_805_driver_info,
326 &radioshack_22_812_driver_info,
327 &tecpel_dmm_8061_ser_driver_info,
328 &voltcraft_m3650d_driver_info,
329 &voltcraft_m4650cr_driver_info,
330 &voltcraft_vc820_ser_driver_info,
331 &voltcraft_vc830_ser_driver_info,
332 &voltcraft_vc840_ser_driver_info,
333 &uni_t_ut60a_ser_driver_info,
334 &uni_t_ut60e_ser_driver_info,
335 &uni_t_ut61d_ser_driver_info,
336 &uni_t_ut61e_ser_driver_info,
337 &iso_tech_idm103n_driver_info,
338#endif
339#ifdef HAVE_HW_UNI_T_DMM
340 &tecpel_dmm_8061_driver_info,
341 &uni_t_ut60a_driver_info,
342 &uni_t_ut60e_driver_info,
343 &uni_t_ut61d_driver_info,
344 &uni_t_ut61e_driver_info,
345 &voltcraft_vc820_driver_info,
346 &voltcraft_vc830_driver_info,
347 &voltcraft_vc840_driver_info,
348#endif
349 NULL,
350};
351
352/**
353 * Return the list of supported hardware drivers.
354 *
355 * @return Pointer to the NULL-terminated list of hardware driver pointers.
356 */
357SR_API struct sr_dev_driver **sr_driver_list(void)
358{
359
360 return drivers_list;
361}
362
363/**
364 * Initialize a hardware driver.
365 *
366 * This usually involves memory allocations and variable initializations
367 * within the driver, but _not_ scanning for attached devices.
368 * The API call sr_driver_scan() is used for that.
369 *
370 * @param ctx A libsigrok context object allocated by a previous call to
371 * sr_init(). Must not be NULL.
372 * @param driver The driver to initialize. This must be a pointer to one of
373 * the entries returned by sr_driver_list(). Must not be NULL.
374 *
375 * @return SR_OK upon success, SR_ERR_ARG upon invalid parameters,
376 * SR_ERR_BUG upon internal errors, or another negative error code
377 * upon other errors.
378 */
379SR_API int sr_driver_init(struct sr_context *ctx, struct sr_dev_driver *driver)
380{
381 int ret;
382
383 if (!ctx) {
384 sr_err("Invalid libsigrok context, can't initialize.");
385 return SR_ERR_ARG;
386 }
387
388 if (!driver) {
389 sr_err("Invalid driver, can't initialize.");
390 return SR_ERR_ARG;
391 }
392
393 sr_spew("Initializing driver '%s'.", driver->name);
394 if ((ret = driver->init(ctx)) < 0)
395 sr_err("Failed to initialize the driver: %d.", ret);
396
397 return ret;
398}
399
400/**
401 * Tell a hardware driver to scan for devices.
402 *
403 * In addition to the detection, the devices that are found are also
404 * initialized automatically. On some devices, this involves a firmware upload,
405 * or other such measures.
406 *
407 * The order in which the system is scanned for devices is not specified. The
408 * caller should not assume or rely on any specific order.
409 *
410 * Before calling sr_driver_scan(), the user must have previously initialized
411 * the driver by calling sr_driver_init().
412 *
413 * @param driver The driver that should scan. This must be a pointer to one of
414 * the entries returned by sr_driver_list(). Must not be NULL.
415 * @param options A list of 'struct sr_hwopt' options to pass to the driver's
416 * scanner. Can be NULL/empty.
417 *
418 * @return A GSList * of 'struct sr_dev_inst', or NULL if no devices were
419 * found (or errors were encountered). This list must be freed by the
420 * caller using g_slist_free(), but without freeing the data pointed
421 * to in the list.
422 */
423SR_API GSList *sr_driver_scan(struct sr_dev_driver *driver, GSList *options)
424{
425 GSList *l;
426
427 if (!driver) {
428 sr_err("Invalid driver, can't scan for devices.");
429 return NULL;
430 }
431
432 if (!driver->priv) {
433 sr_err("Driver not initialized, can't scan for devices.");
434 return NULL;
435 }
436
437 l = driver->scan(options);
438
439 sr_spew("Scan of '%s' found %d devices.", driver->name,
440 g_slist_length(l));
441
442 return l;
443}
444
445/** @private */
446SR_PRIV void sr_hw_cleanup_all(void)
447{
448 int i;
449 struct sr_dev_driver **drivers;
450
451 drivers = sr_driver_list();
452 for (i = 0; drivers[i]; i++) {
453 if (drivers[i]->cleanup)
454 drivers[i]->cleanup();
455 }
456}
457
458/** A floating reference can be passed in for data.
459 * @private */
460SR_PRIV struct sr_config *sr_config_new(int key, GVariant *data)
461{
462 struct sr_config *src;
463
464 if (!(src = g_try_malloc(sizeof(struct sr_config))))
465 return NULL;
466 src->key = key;
467 src->data = g_variant_ref_sink(data);
468
469 return src;
470}
471
472/** @private */
473SR_PRIV void sr_config_free(struct sr_config *src)
474{
475
476 if (!src || !src->data) {
477 sr_err("%s: invalid data!", __func__);
478 return;
479 }
480
481 g_variant_unref(src->data);
482 g_free(src);
483
484}
485
486/**
487 * Returns information about the given driver or device instance.
488 *
489 * @param driver The sr_dev_driver struct to query.
490 * @param key The configuration key (SR_CONF_*).
491 * @param data Pointer to a GVariant where the value will be stored. Must
492 * not be NULL. The caller is given ownership of the GVariant
493 * and must thus decrease the refcount after use. However if
494 * this function returns an error code, the field should be
495 * considered unused, and should not be unreferenced.
496 * @param sdi (optional) If the key is specific to a device, this must
497 * contain a pointer to the struct sr_dev_inst to be checked.
498 * Otherwise it must be NULL.
499 *
500 * @return SR_OK upon success or SR_ERR in case of error. Note SR_ERR_ARG
501 * may be returned by the driver indicating it doesn't know that key,
502 * but this is not to be flagged as an error by the caller; merely
503 * as an indication that it's not applicable.
504 */
505SR_API int sr_config_get(const struct sr_dev_driver *driver, int key,
506 GVariant **data, const struct sr_dev_inst *sdi)
507{
508 int ret;
509
510 if (!driver || !data)
511 return SR_ERR;
512
513 if (!driver->config_get)
514 return SR_ERR_ARG;
515
516 if ((ret = driver->config_get(key, data, sdi)) == SR_OK) {
517 /* Got a floating reference from the driver. Sink it here,
518 * caller will need to unref when done with it. */
519 g_variant_ref_sink(*data);
520 }
521
522 return ret;
523}
524
525/**
526 * Set a configuration key in a device instance.
527 *
528 * @param sdi The device instance.
529 * @param key The configuration key (SR_CONF_*).
530 * @param data The new value for the key, as a GVariant with GVariantType
531 * appropriate to that key. A floating reference can be passed
532 * in; its refcount will be sunk and unreferenced after use.
533 *
534 * @return SR_OK upon success or SR_ERR in case of error. Note SR_ERR_ARG
535 * may be returned by the driver indicating it doesn't know that key,
536 * but this is not to be flagged as an error by the caller; merely
537 * as an indication that it's not applicable.
538 */
539SR_API int sr_config_set(const struct sr_dev_inst *sdi, int key, GVariant *data)
540{
541 int ret;
542
543 g_variant_ref_sink(data);
544
545 if (!sdi || !sdi->driver || !data)
546 ret = SR_ERR;
547 else if (!sdi->driver->config_set)
548 ret = SR_ERR_ARG;
549 else
550 ret = sdi->driver->config_set(key, data, sdi);
551
552 g_variant_unref(data);
553
554 return ret;
555}
556
557/**
558 * List all possible values for a configuration key.
559 *
560 * @param driver The sr_dev_driver struct to query.
561 * @param key The configuration key (SR_CONF_*).
562 * @param data A pointer to a GVariant where the list will be stored. The
563 * caller is given ownership of the GVariant and must thus
564 * unref the GVariant after use. However if this function
565 * returns an error code, the field should be considered
566 * unused, and should not be unreferenced.
567 * @param sdi (optional) If the key is specific to a device, this must
568 * contain a pointer to the struct sr_dev_inst to be checked.
569 *
570 * @return SR_OK upon success or SR_ERR in case of error. Note SR_ERR_ARG
571 * may be returned by the driver indicating it doesn't know that key,
572 * but this is not to be flagged as an error by the caller; merely
573 * as an indication that it's not applicable.
574 */
575SR_API int sr_config_list(const struct sr_dev_driver *driver, int key,
576 GVariant **data, const struct sr_dev_inst *sdi)
577{
578 int ret;
579
580 if (!driver || !data)
581 ret = SR_ERR;
582 else if (!driver->config_list)
583 ret = SR_ERR_ARG;
584 else if ((ret = driver->config_list(key, data, sdi)) == SR_OK)
585 g_variant_ref_sink(*data);
586
587 return ret;
588}
589
590/**
591 * Get information about a configuration key.
592 *
593 * @param key The configuration key.
594 *
595 * @return A pointer to a struct sr_config_info, or NULL if the key
596 * was not found.
597 */
598SR_API const struct sr_config_info *sr_config_info_get(int key)
599{
600 int i;
601
602 for (i = 0; sr_config_info_data[i].key; i++) {
603 if (sr_config_info_data[i].key == key)
604 return &sr_config_info_data[i];
605 }
606
607 return NULL;
608}
609
610/**
611 * Get information about an configuration key, by name.
612 *
613 * @param optname The configuration key.
614 *
615 * @return A pointer to a struct sr_config_info, or NULL if the key
616 * was not found.
617 */
618SR_API const struct sr_config_info *sr_config_info_name_get(const char *optname)
619{
620 int i;
621
622 for (i = 0; sr_config_info_data[i].key; i++) {
623 if (!strcmp(sr_config_info_data[i].id, optname))
624 return &sr_config_info_data[i];
625 }
626
627 return NULL;
628}
629
630/* Unnecessary level of indirection follows. */
631
632/** @private */
633SR_PRIV int sr_source_remove(int fd)
634{
635 return sr_session_source_remove(fd);
636}
637
638/** @private */
639SR_PRIV int sr_source_add(int fd, int events, int timeout,
640 sr_receive_data_callback_t cb, void *cb_data)
641{
642 return sr_session_source_add(fd, events, timeout, cb, cb_data);
643}
644
645/** @} */
Hardware access and backend lib