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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 | ||
53 | static 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_RLE, SR_T_BOOL, "rle", | |
67 | "Run Length Encoding", NULL}, | |
68 | {SR_CONF_TRIGGER_SLOPE, SR_T_UINT64, "triggerslope", | |
69 | "Trigger slope", NULL}, | |
70 | {SR_CONF_TRIGGER_SOURCE, SR_T_CHAR, "triggersource", | |
71 | "Trigger source", NULL}, | |
72 | {SR_CONF_HORIZ_TRIGGERPOS, SR_T_FLOAT, "horiz_triggerpos", | |
73 | "Horizontal trigger position", NULL}, | |
74 | {SR_CONF_BUFFERSIZE, SR_T_UINT64, "buffersize", | |
75 | "Buffer size", NULL}, | |
76 | {SR_CONF_TIMEBASE, SR_T_RATIONAL_PERIOD, "timebase", | |
77 | "Time base", NULL}, | |
78 | {SR_CONF_FILTER, SR_T_CHAR, "filter", | |
79 | "Filter targets", NULL}, | |
80 | {SR_CONF_VDIV, SR_T_RATIONAL_VOLT, "vdiv", | |
81 | "Volts/div", NULL}, | |
82 | {SR_CONF_COUPLING, SR_T_CHAR, "coupling", | |
83 | "Coupling", NULL}, | |
84 | {SR_CONF_DATALOG, SR_T_BOOL, "datalog", | |
85 | "Datalog", NULL}, | |
86 | {SR_CONF_SPL_WEIGHT_FREQ, SR_T_CHAR, "spl_weight_freq", | |
87 | "Sound pressure level frequency weighting", NULL}, | |
88 | {SR_CONF_SPL_WEIGHT_TIME, SR_T_CHAR, "spl_weight_time", | |
89 | "Sound pressure level time weighting", NULL}, | |
90 | {SR_CONF_HOLD_MAX, SR_T_BOOL, "hold_max", | |
91 | "Hold max", NULL}, | |
92 | {SR_CONF_HOLD_MIN, SR_T_BOOL, "hold_min", | |
93 | "Hold min", NULL}, | |
94 | {0, 0, NULL, NULL, NULL}, | |
95 | }; | |
96 | ||
97 | /** @cond PRIVATE */ | |
98 | #ifdef HAVE_HW_BRYMEN_DMM | |
99 | extern SR_PRIV struct sr_dev_driver brymen_bm857_driver_info; | |
100 | #endif | |
101 | #ifdef HAVE_HW_CEM_DT_885X | |
102 | extern SR_PRIV struct sr_dev_driver cem_dt_885x_driver_info; | |
103 | #endif | |
104 | #ifdef HAVE_HW_COLEAD_SLM | |
105 | extern SR_PRIV struct sr_dev_driver colead_slm_driver_info; | |
106 | #endif | |
107 | #ifdef HAVE_HW_DEMO | |
108 | extern SR_PRIV struct sr_dev_driver demo_driver_info; | |
109 | #endif | |
110 | #ifdef HAVE_HW_IKALOGIC_SCANALOGIC2 | |
111 | extern SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info; | |
112 | #endif | |
113 | #ifdef HAVE_HW_LASCAR_EL_USB | |
114 | extern SR_PRIV struct sr_dev_driver lascar_el_usb_driver_info; | |
115 | #endif | |
116 | #ifdef HAVE_HW_MIC_985XX | |
117 | extern SR_PRIV struct sr_dev_driver mic_98581_driver_info; | |
118 | extern SR_PRIV struct sr_dev_driver mic_98583_driver_info; | |
119 | #endif | |
120 | #ifdef HAVE_HW_NEXUS_OSCIPRIME | |
121 | extern SR_PRIV struct sr_dev_driver nexus_osciprime_driver_info; | |
122 | #endif | |
123 | #ifdef HAVE_HW_OLS | |
124 | extern SR_PRIV struct sr_dev_driver ols_driver_info; | |
125 | #endif | |
126 | #ifdef HAVE_HW_RIGOL_DS1XX2 | |
127 | extern SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info; | |
128 | #endif | |
129 | #ifdef HAVE_HW_TONDAJ_SL_814 | |
130 | extern SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info; | |
131 | #endif | |
132 | #ifdef HAVE_HW_VICTOR_DMM | |
133 | extern SR_PRIV struct sr_dev_driver victor_dmm_driver_info; | |
134 | #endif | |
135 | #ifdef HAVE_HW_ZEROPLUS_LOGIC_CUBE | |
136 | extern SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info; | |
137 | #endif | |
138 | #ifdef HAVE_HW_ASIX_SIGMA | |
139 | extern SR_PRIV struct sr_dev_driver asix_sigma_driver_info; | |
140 | #endif | |
141 | #ifdef HAVE_HW_CHRONOVU_LA8 | |
142 | extern SR_PRIV struct sr_dev_driver chronovu_la8_driver_info; | |
143 | #endif | |
144 | #ifdef HAVE_HW_LINK_MSO19 | |
145 | extern SR_PRIV struct sr_dev_driver link_mso19_driver_info; | |
146 | #endif | |
147 | #ifdef HAVE_HW_ALSA | |
148 | extern SR_PRIV struct sr_dev_driver alsa_driver_info; | |
149 | #endif | |
150 | #ifdef HAVE_HW_FX2LAFW | |
151 | extern SR_PRIV struct sr_dev_driver fx2lafw_driver_info; | |
152 | #endif | |
153 | #ifdef HAVE_HW_HANTEK_DSO | |
154 | extern SR_PRIV struct sr_dev_driver hantek_dso_driver_info; | |
155 | #endif | |
156 | #ifdef HAVE_HW_AGILENT_DMM | |
157 | extern SR_PRIV struct sr_dev_driver agdmm_driver_info; | |
158 | #endif | |
159 | #ifdef HAVE_HW_FLUKE_DMM | |
160 | extern SR_PRIV struct sr_dev_driver flukedmm_driver_info; | |
161 | #endif | |
162 | #ifdef HAVE_HW_SERIAL_DMM | |
163 | extern SR_PRIV struct sr_dev_driver digitek_dt4000zc_driver_info; | |
164 | extern SR_PRIV struct sr_dev_driver tekpower_tp4000zc_driver_info; | |
165 | extern SR_PRIV struct sr_dev_driver metex_me31_driver_info; | |
166 | extern SR_PRIV struct sr_dev_driver peaktech_3410_driver_info; | |
167 | extern SR_PRIV struct sr_dev_driver mastech_mas345_driver_info; | |
168 | extern SR_PRIV struct sr_dev_driver va_va18b_driver_info; | |
169 | extern SR_PRIV struct sr_dev_driver metex_m3640d_driver_info; | |
170 | extern SR_PRIV struct sr_dev_driver peaktech_4370_driver_info; | |
171 | extern SR_PRIV struct sr_dev_driver pce_pce_dm32_driver_info; | |
172 | extern SR_PRIV struct sr_dev_driver radioshack_22_168_driver_info; | |
173 | extern SR_PRIV struct sr_dev_driver radioshack_22_805_driver_info; | |
174 | extern SR_PRIV struct sr_dev_driver radioshack_22_812_driver_info; | |
175 | extern SR_PRIV struct sr_dev_driver tecpel_dmm_8060_ser_driver_info; | |
176 | extern SR_PRIV struct sr_dev_driver tecpel_dmm_8061_ser_driver_info; | |
177 | extern SR_PRIV struct sr_dev_driver voltcraft_m3650d_driver_info; | |
178 | extern SR_PRIV struct sr_dev_driver voltcraft_vc820_ser_driver_info; | |
179 | extern SR_PRIV struct sr_dev_driver voltcraft_vc840_ser_driver_info; | |
180 | extern SR_PRIV struct sr_dev_driver uni_t_ut61d_ser_driver_info; | |
181 | extern SR_PRIV struct sr_dev_driver uni_t_ut61e_ser_driver_info; | |
182 | #endif | |
183 | #ifdef HAVE_HW_UNI_T_DMM | |
184 | extern SR_PRIV struct sr_dev_driver tecpel_dmm_8060_driver_info; | |
185 | extern SR_PRIV struct sr_dev_driver tecpel_dmm_8061_driver_info; | |
186 | extern SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info; | |
187 | extern SR_PRIV struct sr_dev_driver uni_t_ut61e_driver_info; | |
188 | extern SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info; | |
189 | extern SR_PRIV struct sr_dev_driver voltcraft_vc840_driver_info; | |
190 | #endif | |
191 | /** @endcond */ | |
192 | ||
193 | static struct sr_dev_driver *drivers_list[] = { | |
194 | #ifdef HAVE_HW_BRYMEN_DMM | |
195 | &brymen_bm857_driver_info, | |
196 | #endif | |
197 | #ifdef HAVE_HW_CEM_DT_885X | |
198 | &cem_dt_885x_driver_info, | |
199 | #endif | |
200 | #ifdef HAVE_HW_COLEAD_SLM | |
201 | &colead_slm_driver_info, | |
202 | #endif | |
203 | #ifdef HAVE_HW_DEMO | |
204 | &demo_driver_info, | |
205 | #endif | |
206 | #ifdef HAVE_HW_IKALOGIC_SCANALOGIC2 | |
207 | &ikalogic_scanalogic2_driver_info, | |
208 | #endif | |
209 | #ifdef HAVE_HW_LASCAR_EL_USB | |
210 | &lascar_el_usb_driver_info, | |
211 | #endif | |
212 | #ifdef HAVE_HW_MIC_985XX | |
213 | &mic_98581_driver_info, | |
214 | &mic_98583_driver_info, | |
215 | #endif | |
216 | #ifdef HAVE_HW_NEXUS_OSCIPRIME | |
217 | &nexus_osciprime_driver_info, | |
218 | #endif | |
219 | #ifdef HAVE_HW_OLS | |
220 | &ols_driver_info, | |
221 | #endif | |
222 | #ifdef HAVE_HW_RIGOL_DS1XX2 | |
223 | &rigol_ds1xx2_driver_info, | |
224 | #endif | |
225 | #ifdef HAVE_HW_TONDAJ_SL_814 | |
226 | &tondaj_sl_814_driver_info, | |
227 | #endif | |
228 | #ifdef HAVE_HW_VICTOR_DMM | |
229 | &victor_dmm_driver_info, | |
230 | #endif | |
231 | #ifdef HAVE_HW_ZEROPLUS_LOGIC_CUBE | |
232 | &zeroplus_logic_cube_driver_info, | |
233 | #endif | |
234 | #ifdef HAVE_HW_ASIX_SIGMA | |
235 | &asix_sigma_driver_info, | |
236 | #endif | |
237 | #ifdef HAVE_HW_CHRONOVU_LA8 | |
238 | &chronovu_la8_driver_info, | |
239 | #endif | |
240 | #ifdef HAVE_HW_LINK_MSO19 | |
241 | &link_mso19_driver_info, | |
242 | #endif | |
243 | #ifdef HAVE_HW_ALSA | |
244 | &alsa_driver_info, | |
245 | #endif | |
246 | #ifdef HAVE_HW_FX2LAFW | |
247 | &fx2lafw_driver_info, | |
248 | #endif | |
249 | #ifdef HAVE_HW_HANTEK_DSO | |
250 | &hantek_dso_driver_info, | |
251 | #endif | |
252 | #ifdef HAVE_HW_AGILENT_DMM | |
253 | &agdmm_driver_info, | |
254 | #endif | |
255 | #ifdef HAVE_HW_FLUKE_DMM | |
256 | &flukedmm_driver_info, | |
257 | #endif | |
258 | #ifdef HAVE_HW_SERIAL_DMM | |
259 | &digitek_dt4000zc_driver_info, | |
260 | &tekpower_tp4000zc_driver_info, | |
261 | &metex_me31_driver_info, | |
262 | &peaktech_3410_driver_info, | |
263 | &mastech_mas345_driver_info, | |
264 | &va_va18b_driver_info, | |
265 | &metex_m3640d_driver_info, | |
266 | &peaktech_4370_driver_info, | |
267 | &pce_pce_dm32_driver_info, | |
268 | &radioshack_22_168_driver_info, | |
269 | &radioshack_22_805_driver_info, | |
270 | &radioshack_22_812_driver_info, | |
271 | &tecpel_dmm_8060_ser_driver_info, | |
272 | &tecpel_dmm_8061_ser_driver_info, | |
273 | &voltcraft_m3650d_driver_info, | |
274 | &voltcraft_vc820_ser_driver_info, | |
275 | &voltcraft_vc840_ser_driver_info, | |
276 | &uni_t_ut61d_ser_driver_info, | |
277 | &uni_t_ut61e_ser_driver_info, | |
278 | #endif | |
279 | #ifdef HAVE_HW_UNI_T_DMM | |
280 | &tecpel_dmm_8060_driver_info, | |
281 | &tecpel_dmm_8061_driver_info, | |
282 | &uni_t_ut61d_driver_info, | |
283 | &uni_t_ut61e_driver_info, | |
284 | &voltcraft_vc820_driver_info, | |
285 | &voltcraft_vc840_driver_info, | |
286 | #endif | |
287 | NULL, | |
288 | }; | |
289 | ||
290 | /** | |
291 | * Return the list of supported hardware drivers. | |
292 | * | |
293 | * @return Pointer to the NULL-terminated list of hardware driver pointers. | |
294 | */ | |
295 | SR_API struct sr_dev_driver **sr_driver_list(void) | |
296 | { | |
297 | ||
298 | return drivers_list; | |
299 | } | |
300 | ||
301 | /** | |
302 | * Initialize a hardware driver. | |
303 | * | |
304 | * This usually involves memory allocations and variable initializations | |
305 | * within the driver, but _not_ scanning for attached devices. | |
306 | * The API call sr_driver_scan() is used for that. | |
307 | * | |
308 | * @param ctx A libsigrok context object allocated by a previous call to | |
309 | * sr_init(). Must not be NULL. | |
310 | * @param driver The driver to initialize. This must be a pointer to one of | |
311 | * the entries returned by sr_driver_list(). Must not be NULL. | |
312 | * | |
313 | * @return SR_OK upon success, SR_ERR_ARG upon invalid parameters, | |
314 | * SR_ERR_BUG upon internal errors, or another negative error code | |
315 | * upon other errors. | |
316 | */ | |
317 | SR_API int sr_driver_init(struct sr_context *ctx, struct sr_dev_driver *driver) | |
318 | { | |
319 | int ret; | |
320 | ||
321 | if (!ctx) { | |
322 | sr_err("Invalid libsigrok context, can't initialize."); | |
323 | return SR_ERR_ARG; | |
324 | } | |
325 | ||
326 | if (!driver) { | |
327 | sr_err("Invalid driver, can't initialize."); | |
328 | return SR_ERR_ARG; | |
329 | } | |
330 | ||
331 | sr_spew("Initializing driver '%s'.", driver->name); | |
332 | if ((ret = driver->init(ctx)) < 0) | |
333 | sr_err("Failed to initialize the driver: %d.", ret); | |
334 | ||
335 | return ret; | |
336 | } | |
337 | ||
338 | /** | |
339 | * Tell a hardware driver to scan for devices. | |
340 | * | |
341 | * In addition to the detection, the devices that are found are also | |
342 | * initialized automatically. On some devices, this involves a firmware upload, | |
343 | * or other such measures. | |
344 | * | |
345 | * The order in which the system is scanned for devices is not specified. The | |
346 | * caller should not assume or rely on any specific order. | |
347 | * | |
348 | * Before calling sr_driver_scan(), the user must have previously initialized | |
349 | * the driver by calling sr_driver_init(). | |
350 | * | |
351 | * @param driver The driver that should scan. This must be a pointer to one of | |
352 | * the entries returned by sr_driver_list(). Must not be NULL. | |
353 | * @param options A list of 'struct sr_hwopt' options to pass to the driver's | |
354 | * scanner. Can be NULL/empty. | |
355 | * | |
356 | * @return A GSList * of 'struct sr_dev_inst', or NULL if no devices were | |
357 | * found (or errors were encountered). This list must be freed by the | |
358 | * caller using g_slist_free(), but without freeing the data pointed | |
359 | * to in the list. | |
360 | */ | |
361 | SR_API GSList *sr_driver_scan(struct sr_dev_driver *driver, GSList *options) | |
362 | { | |
363 | GSList *l; | |
364 | ||
365 | if (!driver) { | |
366 | sr_err("Invalid driver, can't scan for devices."); | |
367 | return NULL; | |
368 | } | |
369 | ||
370 | if (!driver->priv) { | |
371 | sr_err("Driver not initialized, can't scan for devices."); | |
372 | return NULL; | |
373 | } | |
374 | ||
375 | l = driver->scan(options); | |
376 | ||
377 | sr_spew("Scan of '%s' found %d devices.", driver->name, | |
378 | g_slist_length(l)); | |
379 | ||
380 | return l; | |
381 | } | |
382 | ||
383 | /** @private */ | |
384 | SR_PRIV void sr_hw_cleanup_all(void) | |
385 | { | |
386 | int i; | |
387 | struct sr_dev_driver **drivers; | |
388 | ||
389 | drivers = sr_driver_list(); | |
390 | for (i = 0; drivers[i]; i++) { | |
391 | if (drivers[i]->cleanup) | |
392 | drivers[i]->cleanup(); | |
393 | } | |
394 | } | |
395 | ||
396 | /** A floating reference can be passed in for data. */ | |
397 | SR_PRIV struct sr_config *sr_config_new(int key, GVariant *data) | |
398 | { | |
399 | struct sr_config *src; | |
400 | ||
401 | if (!(src = g_try_malloc(sizeof(struct sr_config)))) | |
402 | return NULL; | |
403 | src->key = key; | |
404 | src->data = g_variant_ref_sink(data); | |
405 | ||
406 | return src; | |
407 | } | |
408 | ||
409 | SR_PRIV void sr_config_free(struct sr_config *src) | |
410 | { | |
411 | ||
412 | if (!src || !src->data) { | |
413 | sr_err("%s: invalid data!", __func__); | |
414 | return; | |
415 | } | |
416 | ||
417 | g_variant_unref(src->data); | |
418 | g_free(src); | |
419 | ||
420 | } | |
421 | ||
422 | /** | |
423 | * Returns information about the given driver or device instance. | |
424 | * | |
425 | * @param driver The sr_dev_driver struct to query. | |
426 | * @param key The configuration key (SR_CONF_*). | |
427 | * @param data Pointer to a GVariant where the value will be stored. Must | |
428 | * not be NULL. The caller is given ownership of the GVariant | |
429 | * and must thus decrease the refcount after use. However if | |
430 | * this function returns an error code, the field should be | |
431 | * considered unused, and should not be unreferenced. | |
432 | * @param sdi (optional) If the key is specific to a device, this must | |
433 | * contain a pointer to the struct sr_dev_inst to be checked. | |
434 | * Otherwise it must be NULL. | |
435 | * | |
436 | * @return SR_OK upon success or SR_ERR in case of error. Note SR_ERR_ARG | |
437 | * may be returned by the driver indicating it doesn't know that key, | |
438 | * but this is not to be flagged as an error by the caller; merely | |
439 | * as an indication that it's not applicable. | |
440 | */ | |
441 | SR_API int sr_config_get(const struct sr_dev_driver *driver, int key, | |
442 | GVariant **data, const struct sr_dev_inst *sdi) | |
443 | { | |
444 | int ret; | |
445 | ||
446 | if (!driver || !data) | |
447 | return SR_ERR; | |
448 | ||
449 | if (!driver->config_get) | |
450 | return SR_ERR_ARG; | |
451 | ||
452 | if ((ret = driver->config_get(key, data, sdi)) == SR_OK) { | |
453 | /* Got a floating reference from the driver. Sink it here, | |
454 | * caller will need to unref when done with it. */ | |
455 | g_variant_ref_sink(*data); | |
456 | } | |
457 | ||
458 | return ret; | |
459 | } | |
460 | ||
461 | /** | |
462 | * Set a configuration key in a device instance. | |
463 | * | |
464 | * @param sdi The device instance. | |
465 | * @param key The configuration key (SR_CONF_*). | |
466 | * @param data The new value for the key, as a GVariant with GVariantType | |
467 | * appropriate to that key. A floating reference can be passed | |
468 | * in; its refcount will be sunk and unreferenced after use. | |
469 | * | |
470 | * @return SR_OK upon success or SR_ERR in case of error. Note SR_ERR_ARG | |
471 | * may be returned by the driver indicating it doesn't know that key, | |
472 | * but this is not to be flagged as an error by the caller; merely | |
473 | * as an indication that it's not applicable. | |
474 | */ | |
475 | SR_API int sr_config_set(const struct sr_dev_inst *sdi, int key, GVariant *data) | |
476 | { | |
477 | int ret; | |
478 | ||
479 | g_variant_ref_sink(data); | |
480 | ||
481 | if (!sdi || !sdi->driver || !data) | |
482 | ret = SR_ERR; | |
483 | else if (!sdi->driver->config_set) | |
484 | ret = SR_ERR_ARG; | |
485 | else | |
486 | ret = sdi->driver->config_set(key, data, sdi); | |
487 | ||
488 | g_variant_unref(data); | |
489 | ||
490 | return ret; | |
491 | } | |
492 | ||
493 | /** | |
494 | * List all possible values for a configuration key. | |
495 | * | |
496 | * @param driver The sr_dev_driver struct to query. | |
497 | * @param key The configuration key (SR_CONF_*). | |
498 | * @param data A pointer to a GVariant where the list will be stored. The | |
499 | * caller is given ownership of the GVariant and must thus | |
500 | * unref the GVariant after use. However if this function | |
501 | * returns an error code, the field should be considered | |
502 | * unused, and should not be unreferenced. | |
503 | * @param sdi (optional) If the key is specific to a device, this must | |
504 | * contain a pointer to the struct sr_dev_inst to be checked. | |
505 | * | |
506 | * @return SR_OK upon success or SR_ERR in case of error. Note SR_ERR_ARG | |
507 | * may be returned by the driver indicating it doesn't know that key, | |
508 | * but this is not to be flagged as an error by the caller; merely | |
509 | * as an indication that it's not applicable. | |
510 | */ | |
511 | SR_API int sr_config_list(const struct sr_dev_driver *driver, int key, | |
512 | GVariant **data, const struct sr_dev_inst *sdi) | |
513 | { | |
514 | int ret; | |
515 | ||
516 | if (!driver || !data) | |
517 | ret = SR_ERR; | |
518 | else if (!driver->config_list) | |
519 | ret = SR_ERR_ARG; | |
520 | else if ((ret = driver->config_list(key, data, sdi)) == SR_OK) | |
521 | g_variant_ref_sink(*data); | |
522 | ||
523 | return ret; | |
524 | } | |
525 | ||
526 | /** | |
527 | * Get information about a configuration key. | |
528 | * | |
529 | * @param key The configuration key. | |
530 | * | |
531 | * @return A pointer to a struct sr_config_info, or NULL if the key | |
532 | * was not found. | |
533 | */ | |
534 | SR_API const struct sr_config_info *sr_config_info_get(int key) | |
535 | { | |
536 | int i; | |
537 | ||
538 | for (i = 0; sr_config_info_data[i].key; i++) { | |
539 | if (sr_config_info_data[i].key == key) | |
540 | return &sr_config_info_data[i]; | |
541 | } | |
542 | ||
543 | return NULL; | |
544 | } | |
545 | ||
546 | /** | |
547 | * Get information about an configuration key, by name. | |
548 | * | |
549 | * @param optname The configuration key. | |
550 | * | |
551 | * @return A pointer to a struct sr_config_info, or NULL if the key | |
552 | * was not found. | |
553 | */ | |
554 | SR_API const struct sr_config_info *sr_config_info_name_get(const char *optname) | |
555 | { | |
556 | int i; | |
557 | ||
558 | for (i = 0; sr_config_info_data[i].key; i++) { | |
559 | if (!strcmp(sr_config_info_data[i].id, optname)) | |
560 | return &sr_config_info_data[i]; | |
561 | } | |
562 | ||
563 | return NULL; | |
564 | } | |
565 | ||
566 | /* Unnecessary level of indirection follows. */ | |
567 | ||
568 | /** @private */ | |
569 | SR_PRIV int sr_source_remove(int fd) | |
570 | { | |
571 | return sr_session_source_remove(fd); | |
572 | } | |
573 | ||
574 | /** @private */ | |
575 | SR_PRIV int sr_source_add(int fd, int events, int timeout, | |
576 | sr_receive_data_callback_t cb, void *cb_data) | |
577 | { | |
578 | return sr_session_source_add(fd, events, timeout, cb, cb_data); | |
579 | } | |
580 | ||
581 | /** @} */ |