hwdriver.c

   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 #define LOG_PREFIX "hwdriver"
  31
  32 /**
  33  * @file
  34  *
  35  * Hardware driver handling in libsigrok.
  36  */
  37
  38 /**
  39  * @defgroup grp_driver Hardware drivers
  40  *
  41  * Hardware driver handling in libsigrok.
  42  *
  43  * @{
  44  */
  45
  46 static struct sr_config_info sr_config_info_data[] = {
  47         {SR_CONF_CONN, SR_T_CHAR, "conn",
  48                 "Connection", NULL},
  49         {SR_CONF_SERIALCOMM, SR_T_CHAR, "serialcomm",
  50                 "Serial communication", NULL},
  51         {SR_CONF_SAMPLERATE, SR_T_UINT64, "samplerate",
  52                 "Sample rate", NULL},
  53         {SR_CONF_CAPTURE_RATIO, SR_T_UINT64, "captureratio",
  54                 "Pre-trigger capture ratio", NULL},
  55         {SR_CONF_PATTERN_MODE, SR_T_CHAR, "pattern",
  56                 "Pattern", NULL},
  57         {SR_CONF_TRIGGER_TYPE, SR_T_CHAR, "triggertype",
  58                 "Trigger types", NULL},
  59         {SR_CONF_EXTERNAL_CLOCK, SR_T_BOOL, "external_clock",
  60                 "External clock mode", NULL},
  61         {SR_CONF_SWAP, SR_T_BOOL, "swap",
  62                 "Swap channel order", NULL},
  63         {SR_CONF_RLE, SR_T_BOOL, "rle",
  64                 "Run Length Encoding", NULL},
  65         {SR_CONF_TRIGGER_SLOPE, SR_T_CHAR, "triggerslope",
  66                 "Trigger slope", NULL},
  67         {SR_CONF_TRIGGER_SOURCE, SR_T_CHAR, "triggersource",
  68                 "Trigger source", NULL},
  69         {SR_CONF_HORIZ_TRIGGERPOS, SR_T_FLOAT, "horiz_triggerpos",
  70                 "Horizontal trigger position", NULL},
  71         {SR_CONF_BUFFERSIZE, SR_T_UINT64, "buffersize",
  72                 "Buffer size", NULL},
  73         {SR_CONF_TIMEBASE, SR_T_RATIONAL_PERIOD, "timebase",
  74                 "Time base", NULL},
  75         {SR_CONF_FILTER, SR_T_CHAR, "filter",
  76                 "Filter targets", NULL},
  77         {SR_CONF_VDIV, SR_T_RATIONAL_VOLT, "vdiv",
  78                 "Volts/div", NULL},
  79         {SR_CONF_COUPLING, SR_T_CHAR, "coupling",
  80                 "Coupling", NULL},
  81         {SR_CONF_DATALOG, SR_T_BOOL, "datalog",
  82                 "Datalog", NULL},
  83         {SR_CONF_SPL_WEIGHT_FREQ, SR_T_CHAR, "spl_weight_freq",
  84                 "Sound pressure level frequency weighting", NULL},
  85         {SR_CONF_SPL_WEIGHT_TIME, SR_T_CHAR, "spl_weight_time",
  86                 "Sound pressure level time weighting", NULL},
  87         {SR_CONF_HOLD_MAX, SR_T_BOOL, "hold_max",
  88                 "Hold max", NULL},
  89         {SR_CONF_HOLD_MIN, SR_T_BOOL, "hold_min",
  90                 "Hold min", NULL},
  91         {SR_CONF_SPL_MEASUREMENT_RANGE, SR_T_UINT64_RANGE, "spl_meas_range",
  92                 "Sound pressure level measurement range", NULL},
  93         {SR_CONF_VOLTAGE_THRESHOLD, SR_T_DOUBLE_RANGE, "voltage_threshold",
  94                 "Voltage threshold", NULL },
  95         {SR_CONF_POWER_OFF, SR_T_BOOL, "power_off",
  96                 "Power off", NULL},
  97         {SR_CONF_DATA_SOURCE, SR_T_CHAR, "data_source",
  98                 "Data source", NULL},
  99         {SR_CONF_NUM_LOGIC_PROBES, SR_T_INT32, "logic_probes",
 100                 "Number of logic probes", NULL},
 101         {SR_CONF_NUM_ANALOG_PROBES, SR_T_INT32, "analog_probes",
 102                 "Number of analog probes", NULL},
 103         {SR_CONF_OUTPUT_VOLTAGE, SR_T_FLOAT, "output_voltage",
 104                 "Current output voltage", NULL},
 105         {SR_CONF_OUTPUT_VOLTAGE_MAX, SR_T_FLOAT, "output_voltage_max",
 106                 "Maximum output voltage", NULL},
 107         {SR_CONF_OUTPUT_CURRENT, SR_T_FLOAT, "output_current",
 108                 "Current output current", NULL},
 109         {SR_CONF_OUTPUT_CURRENT_MAX, SR_T_FLOAT, "output_current_max",
 110                 "Maximum output current", NULL},
 111         {SR_CONF_OUTPUT_ENABLED, SR_T_BOOL, "output_enabled",
 112                 "Output enabled", NULL},
 113         {SR_CONF_OUTPUT_CHANNEL, SR_T_CHAR, "output_channel",
 114                 "Output channel modes", NULL},
 115         {SR_CONF_OVER_VOLTAGE_PROTECTION, SR_T_BOOL, "ovp",
 116                 "Over-voltage protection", NULL},
 117         {SR_CONF_OVER_CURRENT_PROTECTION, SR_T_BOOL, "ocp",
 118                 "Over-current protection", NULL},
 119         {SR_CONF_LIMIT_SAMPLES, SR_T_UINT64, "limit_samples",
 120                 "Sample limit", NULL},
 121         {SR_CONF_CLOCK_EDGE, SR_T_CHAR, "clock_edge",
 122                 "Clock edge", NULL},
 123         {0, 0, NULL, NULL, NULL},
 124 };
 125
 126 /** @cond PRIVATE */
 127 #ifdef HAVE_HW_APPA_55II
 128 extern SR_PRIV struct sr_dev_driver appa_55ii_driver_info;
 129 #endif
 130 #ifdef HAVE_HW_ATTEN_PPS3XXX
 131 extern SR_PRIV struct sr_dev_driver atten_pps3203_driver_info;
 132 #endif
 133 #ifdef HAVE_HW_BRYMEN_DMM
 134 extern SR_PRIV struct sr_dev_driver brymen_bm857_driver_info;
 135 #endif
 136 #ifdef HAVE_HW_CEM_DT_885X
 137 extern SR_PRIV struct sr_dev_driver cem_dt_885x_driver_info;
 138 #endif
 139 #ifdef HAVE_HW_CENTER_3XX
 140 extern SR_PRIV struct sr_dev_driver center_309_driver_info;
 141 extern SR_PRIV struct sr_dev_driver voltcraft_k204_driver_info;
 142 #endif
 143 #ifdef HAVE_HW_COLEAD_SLM
 144 extern SR_PRIV struct sr_dev_driver colead_slm_driver_info;
 145 #endif
 146 #ifdef HAVE_HW_CONRAD_DIGI_35_CPU
 147 extern SR_PRIV struct sr_dev_driver conrad_digi_35_cpu_driver_info;
 148 #endif
 149 #ifdef HAVE_HW_DEMO
 150 extern SR_PRIV struct sr_dev_driver demo_driver_info;
 151 #endif
 152 #ifdef HAVE_HW_GMC_MH_1X_2X
 153 extern SR_PRIV struct sr_dev_driver gmc_mh_1x_2x_rs232_driver_info;
 154 extern SR_PRIV struct sr_dev_driver gmc_mh_2x_bd232_driver_info;
 155 #endif
 156 #ifdef HAVE_HW_HAMEG_HMO
 157 extern SR_PRIV struct sr_dev_driver hameg_hmo_driver_info;
 158 #endif
 159 #ifdef HAVE_HW_IKALOGIC_SCANALOGIC2
 160 extern SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info;
 161 #endif
 162 #ifdef HAVE_HW_IKALOGIC_SCANAPLUS
 163 extern SR_PRIV struct sr_dev_driver ikalogic_scanaplus_driver_info;
 164 #endif
 165 #ifdef HAVE_HW_KECHENG_KC_330B
 166 extern SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info;
 167 #endif
 168 #ifdef HAVE_HW_LASCAR_EL_USB
 169 extern SR_PRIV struct sr_dev_driver lascar_el_usb_driver_info;
 170 #endif
 171 #ifdef HAVE_HW_MIC_985XX
 172 extern SR_PRIV struct sr_dev_driver mic_98581_driver_info;
 173 extern SR_PRIV struct sr_dev_driver mic_98583_driver_info;
 174 #endif
 175 #ifdef HAVE_HW_NORMA_DMM
 176 extern SR_PRIV struct sr_dev_driver norma_dmm_driver_info;
 177 #endif
 178 #ifdef HAVE_HW_OLS
 179 extern SR_PRIV struct sr_dev_driver ols_driver_info;
 180 #endif
 181 #ifdef HAVE_HW_RIGOL_DS
 182 extern SR_PRIV struct sr_dev_driver rigol_ds_driver_info;
 183 #endif
 184 #ifdef HAVE_HW_SALEAE_LOGIC16
 185 extern SR_PRIV struct sr_dev_driver saleae_logic16_driver_info;
 186 #endif
 187 #ifdef HAVE_HW_SYSCLK_LWLA
 188 extern SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info;
 189 #endif
 190 #ifdef HAVE_HW_TELEINFO
 191 extern SR_PRIV struct sr_dev_driver teleinfo_driver_info;
 192 #endif
 193 #ifdef HAVE_HW_TONDAJ_SL_814
 194 extern SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info;
 195 #endif
 196 #ifdef HAVE_HW_UNI_T_UT32X
 197 extern SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info;
 198 #endif
 199 #ifdef HAVE_HW_VICTOR_DMM
 200 extern SR_PRIV struct sr_dev_driver victor_dmm_driver_info;
 201 #endif
 202 #ifdef HAVE_HW_ZEROPLUS_LOGIC_CUBE
 203 extern SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
 204 #endif
 205 #ifdef HAVE_HW_ASIX_SIGMA
 206 extern SR_PRIV struct sr_dev_driver asix_sigma_driver_info;
 207 #endif
 208 #ifdef HAVE_HW_CHRONOVU_LA8
 209 extern SR_PRIV struct sr_dev_driver chronovu_la8_driver_info;
 210 #endif
 211 #ifdef HAVE_HW_LINK_MSO19
 212 extern SR_PRIV struct sr_dev_driver link_mso19_driver_info;
 213 #endif
 214 #ifdef HAVE_HW_ALSA
 215 extern SR_PRIV struct sr_dev_driver alsa_driver_info;
 216 #endif
 217 #ifdef HAVE_HW_FX2LAFW
 218 extern SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
 219 #endif
 220 #ifdef HAVE_HW_HANTEK_DSO
 221 extern SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
 222 #endif
 223 #ifdef HAVE_HW_AGILENT_DMM
 224 extern SR_PRIV struct sr_dev_driver agdmm_driver_info;
 225 #endif
 226 #ifdef HAVE_HW_FLUKE_DMM
 227 extern SR_PRIV struct sr_dev_driver flukedmm_driver_info;
 228 #endif
 229 #ifdef HAVE_HW_SERIAL_DMM
 230 extern SR_PRIV struct sr_dev_driver bbcgm_m2110_driver_info;
 231 extern SR_PRIV struct sr_dev_driver digitek_dt4000zc_driver_info;
 232 extern SR_PRIV struct sr_dev_driver tekpower_tp4000zc_driver_info;
 233 extern SR_PRIV struct sr_dev_driver metex_me31_driver_info;
 234 extern SR_PRIV struct sr_dev_driver peaktech_3410_driver_info;
 235 extern SR_PRIV struct sr_dev_driver mastech_mas345_driver_info;
 236 extern SR_PRIV struct sr_dev_driver va_va18b_driver_info;
 237 extern SR_PRIV struct sr_dev_driver va_va40b_driver_info;
 238 extern SR_PRIV struct sr_dev_driver metex_m3640d_driver_info;
 239 extern SR_PRIV struct sr_dev_driver metex_m4650cr_driver_info;
 240 extern SR_PRIV struct sr_dev_driver peaktech_4370_driver_info;
 241 extern SR_PRIV struct sr_dev_driver pce_pce_dm32_driver_info;
 242 extern SR_PRIV struct sr_dev_driver radioshack_22_168_driver_info;
 243 extern SR_PRIV struct sr_dev_driver radioshack_22_805_driver_info;
 244 extern SR_PRIV struct sr_dev_driver radioshack_22_812_driver_info;
 245 extern SR_PRIV struct sr_dev_driver tecpel_dmm_8061_ser_driver_info;
 246 extern SR_PRIV struct sr_dev_driver voltcraft_m3650d_driver_info;
 247 extern SR_PRIV struct sr_dev_driver voltcraft_m4650cr_driver_info;
 248 extern SR_PRIV struct sr_dev_driver voltcraft_vc820_ser_driver_info;
 249 extern SR_PRIV struct sr_dev_driver voltcraft_vc830_ser_driver_info;
 250 extern SR_PRIV struct sr_dev_driver voltcraft_vc840_ser_driver_info;
 251 extern SR_PRIV struct sr_dev_driver uni_t_ut60a_ser_driver_info;
 252 extern SR_PRIV struct sr_dev_driver uni_t_ut60e_ser_driver_info;
 253 extern SR_PRIV struct sr_dev_driver uni_t_ut60g_ser_driver_info;
 254 extern SR_PRIV struct sr_dev_driver uni_t_ut61b_ser_driver_info;
 255 extern SR_PRIV struct sr_dev_driver uni_t_ut61c_ser_driver_info;
 256 extern SR_PRIV struct sr_dev_driver uni_t_ut61d_ser_driver_info;
 257 extern SR_PRIV struct sr_dev_driver uni_t_ut61e_ser_driver_info;
 258 extern SR_PRIV struct sr_dev_driver iso_tech_idm103n_driver_info;
 259 extern SR_PRIV struct sr_dev_driver tenma_72_7745_ser_driver_info;
 260 extern SR_PRIV struct sr_dev_driver tenma_72_7750_ser_driver_info;
 261 #endif
 262 #ifdef HAVE_HW_UNI_T_DMM
 263 extern SR_PRIV struct sr_dev_driver tecpel_dmm_8061_driver_info;
 264 extern SR_PRIV struct sr_dev_driver uni_t_ut60a_driver_info;
 265 extern SR_PRIV struct sr_dev_driver uni_t_ut60e_driver_info;
 266 extern SR_PRIV struct sr_dev_driver uni_t_ut60g_driver_info;
 267 extern SR_PRIV struct sr_dev_driver uni_t_ut61b_driver_info;
 268 extern SR_PRIV struct sr_dev_driver uni_t_ut61c_driver_info;
 269 extern SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info;
 270 extern SR_PRIV struct sr_dev_driver uni_t_ut61e_driver_info;
 271 extern SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info;
 272 extern SR_PRIV struct sr_dev_driver voltcraft_vc830_driver_info;
 273 extern SR_PRIV struct sr_dev_driver voltcraft_vc840_driver_info;
 274 extern SR_PRIV struct sr_dev_driver tenma_72_7745_driver_info;
 275 extern SR_PRIV struct sr_dev_driver tenma_72_7750_driver_info;
 276 #endif
 277 /** @endcond */
 278
 279 static struct sr_dev_driver *drivers_list[] = {
 280 #ifdef HAVE_HW_APPA_55II
 281         &appa_55ii_driver_info,
 282 #endif
 283 #ifdef HAVE_HW_ATTEN_PPS3XXX
 284         &atten_pps3203_driver_info,
 285 #endif
 286 #ifdef HAVE_HW_BRYMEN_DMM
 287         &brymen_bm857_driver_info,
 288 #endif
 289 #ifdef HAVE_HW_CEM_DT_885X
 290         &cem_dt_885x_driver_info,
 291 #endif
 292 #ifdef HAVE_HW_CENTER_3XX
 293         &center_309_driver_info,
 294         &voltcraft_k204_driver_info,
 295 #endif
 296 #ifdef HAVE_HW_COLEAD_SLM
 297         &colead_slm_driver_info,
 298 #endif
 299 #ifdef HAVE_HW_CONRAD_DIGI_35_CPU
 300         &conrad_digi_35_cpu_driver_info,
 301 #endif
 302 #ifdef HAVE_HW_DEMO
 303         &demo_driver_info,
 304 #endif
 305 #ifdef HAVE_HW_GMC_MH_1X_2X
 306         &gmc_mh_1x_2x_rs232_driver_info,
 307     &gmc_mh_2x_bd232_driver_info,
 308 #endif
 309 #ifdef HAVE_HW_HAMEG_HMO
 310         &hameg_hmo_driver_info,
 311 #endif
 312 #ifdef HAVE_HW_IKALOGIC_SCANALOGIC2
 313         &ikalogic_scanalogic2_driver_info,
 314 #endif
 315 #ifdef HAVE_HW_IKALOGIC_SCANAPLUS
 316         &ikalogic_scanaplus_driver_info,
 317 #endif
 318 #ifdef HAVE_HW_KECHENG_KC_330B
 319         &kecheng_kc_330b_driver_info,
 320 #endif
 321 #ifdef HAVE_HW_LASCAR_EL_USB
 322         &lascar_el_usb_driver_info,
 323 #endif
 324 #ifdef HAVE_HW_MIC_985XX
 325         &mic_98581_driver_info,
 326         &mic_98583_driver_info,
 327 #endif
 328 #ifdef HAVE_HW_NORMA_DMM
 329         &norma_dmm_driver_info,
 330 #endif
 331 #ifdef HAVE_HW_OLS
 332         &ols_driver_info,
 333 #endif
 334 #ifdef HAVE_HW_RIGOL_DS
 335         &rigol_ds_driver_info,
 336 #endif
 337 #ifdef HAVE_HW_SALEAE_LOGIC16
 338         &saleae_logic16_driver_info,
 339 #endif
 340 #ifdef HAVE_HW_SYSCLK_LWLA
 341         &sysclk_lwla_driver_info,
 342 #endif
 343 #ifdef HAVE_HW_TELEINFO
 344         &teleinfo_driver_info,
 345 #endif
 346 #ifdef HAVE_HW_TONDAJ_SL_814
 347         &tondaj_sl_814_driver_info,
 348 #endif
 349 #ifdef HAVE_HW_UNI_T_UT32X
 350         &uni_t_ut32x_driver_info,
 351 #endif
 352 #ifdef HAVE_HW_VICTOR_DMM
 353         &victor_dmm_driver_info,
 354 #endif
 355 #ifdef HAVE_HW_ZEROPLUS_LOGIC_CUBE
 356         &zeroplus_logic_cube_driver_info,
 357 #endif
 358 #ifdef HAVE_HW_ASIX_SIGMA
 359         &asix_sigma_driver_info,
 360 #endif
 361 #ifdef HAVE_HW_CHRONOVU_LA8
 362         &chronovu_la8_driver_info,
 363 #endif
 364 #ifdef HAVE_HW_LINK_MSO19
 365         &link_mso19_driver_info,
 366 #endif
 367 #ifdef HAVE_HW_ALSA
 368         &alsa_driver_info,
 369 #endif
 370 #ifdef HAVE_HW_FX2LAFW
 371         &fx2lafw_driver_info,
 372 #endif
 373 #ifdef HAVE_HW_HANTEK_DSO
 374         &hantek_dso_driver_info,
 375 #endif
 376 #ifdef HAVE_HW_AGILENT_DMM
 377         &agdmm_driver_info,
 378 #endif
 379 #ifdef HAVE_HW_FLUKE_DMM
 380         &flukedmm_driver_info,
 381 #endif
 382 #ifdef HAVE_HW_SERIAL_DMM
 383         &bbcgm_m2110_driver_info,
 384         &digitek_dt4000zc_driver_info,
 385         &tekpower_tp4000zc_driver_info,
 386         &metex_me31_driver_info,
 387         &peaktech_3410_driver_info,
 388         &mastech_mas345_driver_info,
 389         &va_va18b_driver_info,
 390         &va_va40b_driver_info,
 391         &metex_m3640d_driver_info,
 392         &metex_m4650cr_driver_info,
 393         &peaktech_4370_driver_info,
 394         &pce_pce_dm32_driver_info,
 395         &radioshack_22_168_driver_info,
 396         &radioshack_22_805_driver_info,
 397         &radioshack_22_812_driver_info,
 398         &tecpel_dmm_8061_ser_driver_info,
 399         &voltcraft_m3650d_driver_info,
 400         &voltcraft_m4650cr_driver_info,
 401         &voltcraft_vc820_ser_driver_info,
 402         &voltcraft_vc830_ser_driver_info,
 403         &voltcraft_vc840_ser_driver_info,
 404         &uni_t_ut60a_ser_driver_info,
 405         &uni_t_ut60e_ser_driver_info,
 406         &uni_t_ut60g_ser_driver_info,
 407         &uni_t_ut61b_ser_driver_info,
 408         &uni_t_ut61c_ser_driver_info,
 409         &uni_t_ut61d_ser_driver_info,
 410         &uni_t_ut61e_ser_driver_info,
 411         &iso_tech_idm103n_driver_info,
 412         &tenma_72_7745_ser_driver_info,
 413         &tenma_72_7750_ser_driver_info,
 414 #endif
 415 #ifdef HAVE_HW_UNI_T_DMM
 416         &tecpel_dmm_8061_driver_info,
 417         &uni_t_ut60a_driver_info,
 418         &uni_t_ut60e_driver_info,
 419         &uni_t_ut60g_driver_info,
 420         &uni_t_ut61b_driver_info,
 421         &uni_t_ut61c_driver_info,
 422         &uni_t_ut61d_driver_info,
 423         &uni_t_ut61e_driver_info,
 424         &voltcraft_vc820_driver_info,
 425         &voltcraft_vc830_driver_info,
 426         &voltcraft_vc840_driver_info,
 427         &tenma_72_7745_driver_info,
 428         &tenma_72_7750_driver_info,
 429 #endif
 430         NULL,
 431 };
 432
 433 /**
 434  * Return the list of supported hardware drivers.
 435  *
 436  * @return Pointer to the NULL-terminated list of hardware driver pointers.
 437  */
 438 SR_API struct sr_dev_driver **sr_driver_list(void)
 439 {
 440
 441         return drivers_list;
 442 }
 443
 444 /**
 445  * Initialize a hardware driver.
 446  *
 447  * This usually involves memory allocations and variable initializations
 448  * within the driver, but _not_ scanning for attached devices.
 449  * The API call sr_driver_scan() is used for that.
 450  *
 451  * @param ctx A libsigrok context object allocated by a previous call to
 452  *            sr_init(). Must not be NULL.
 453  * @param driver The driver to initialize. This must be a pointer to one of
 454  *               the entries returned by sr_driver_list(). Must not be NULL.
 455  *
 456  * @retval SR_OK Success
 457  * @retval SR_ERR_ARG Invalid parameter(s).
 458  * @retval SR_ERR_BUG Internal errors.
 459  * @retval other Another negative error code upon other errors.
 460  */
 461 SR_API int sr_driver_init(struct sr_context *ctx, struct sr_dev_driver *driver)
 462 {
 463         int ret;
 464
 465         if (!ctx) {
 466                 sr_err("Invalid libsigrok context, can't initialize.");
 467                 return SR_ERR_ARG;
 468         }
 469
 470         if (!driver) {
 471                 sr_err("Invalid driver, can't initialize.");
 472                 return SR_ERR_ARG;
 473         }
 474
 475         sr_spew("Initializing driver '%s'.", driver->name);
 476         if ((ret = driver->init(ctx)) < 0)
 477                 sr_err("Failed to initialize the driver: %d.", ret);
 478
 479         return ret;
 480 }
 481
 482 /**
 483  * Tell a hardware driver to scan for devices.
 484  *
 485  * In addition to the detection, the devices that are found are also
 486  * initialized automatically. On some devices, this involves a firmware upload,
 487  * or other such measures.
 488  *
 489  * The order in which the system is scanned for devices is not specified. The
 490  * caller should not assume or rely on any specific order.
 491  *
 492  * Before calling sr_driver_scan(), the user must have previously initialized
 493  * the driver by calling sr_driver_init().
 494  *
 495  * @param driver The driver that should scan. This must be a pointer to one of
 496  *               the entries returned by sr_driver_list(). Must not be NULL.
 497  * @param options A list of 'struct sr_hwopt' options to pass to the driver's
 498  *                scanner. Can be NULL/empty.
 499  *
 500  * @return A GSList * of 'struct sr_dev_inst', or NULL if no devices were
 501  *         found (or errors were encountered). This list must be freed by the
 502  *         caller using g_slist_free(), but without freeing the data pointed
 503  *         to in the list.
 504  */
 505 SR_API GSList *sr_driver_scan(struct sr_dev_driver *driver, GSList *options)
 506 {
 507         GSList *l;
 508
 509         if (!driver) {
 510                 sr_err("Invalid driver, can't scan for devices.");
 511                 return NULL;
 512         }
 513
 514         if (!driver->priv) {
 515                 sr_err("Driver not initialized, can't scan for devices.");
 516                 return NULL;
 517         }
 518
 519         l = driver->scan(options);
 520
 521         sr_spew("Scan of '%s' found %d devices.", driver->name,
 522                 g_slist_length(l));
 523
 524         return l;
 525 }
 526
 527 /** Call driver cleanup function for all drivers.
 528  *  @private */
 529 SR_PRIV void sr_hw_cleanup_all(void)
 530 {
 531         int i;
 532         struct sr_dev_driver **drivers;
 533
 534         drivers = sr_driver_list();
 535         for (i = 0; drivers[i]; i++) {
 536                 if (drivers[i]->cleanup)
 537                         drivers[i]->cleanup();
 538         }
 539 }
 540
 541 /** Allocate struct sr_config.
 542  *  A floating reference can be passed in for data.
 543  *  @private
 544  */
 545 SR_PRIV struct sr_config *sr_config_new(int key, GVariant *data)
 546 {
 547         struct sr_config *src;
 548
 549         if (!(src = g_try_malloc(sizeof(struct sr_config))))
 550                 return NULL;
 551         src->key = key;
 552         src->data = g_variant_ref_sink(data);
 553
 554         return src;
 555 }
 556
 557 /** Free struct sr_config.
 558  *  @private
 559  */
 560 SR_PRIV void sr_config_free(struct sr_config *src)
 561 {
 562
 563         if (!src || !src->data) {
 564                 sr_err("%s: invalid data!", __func__);
 565                 return;
 566         }
 567
 568         g_variant_unref(src->data);
 569         g_free(src);
 570
 571 }
 572
 573 /**
 574  * Query value of a configuration key at the given driver or device instance.
 575  *
 576  * @param[in] driver The sr_dev_driver struct to query.
 577  * @param[in] sdi (optional) If the key is specific to a device, this must
 578  *            contain a pointer to the struct sr_dev_inst to be checked.
 579  *            Otherwise it must be NULL.
 580  * @param[in] probe_group The probe group on the device for which to list the
 581  *                    values, or NULL.
 582  * @param[in] key The configuration key (SR_CONF_*).
 583  * @param[in,out] data Pointer to a GVariant where the value will be stored.
 584  *             Must not be NULL. The caller is given ownership of the GVariant
 585  *             and must thus decrease the refcount after use. However if
 586  *             this function returns an error code, the field should be
 587  *             considered unused, and should not be unreferenced.
 588  *
 589  * @retval SR_OK Success.
 590  * @retval SR_ERR Error.
 591  * @retval SR_ERR_ARG The driver doesn't know that key, but this is not to be
 592  *          interpreted as an error by the caller; merely as an indication
 593  *          that it's not applicable.
 594  */
 595 SR_API int sr_config_get(const struct sr_dev_driver *driver,
 596                 const struct sr_dev_inst *sdi,
 597                 const struct sr_probe_group *probe_group,
 598                 int key, GVariant **data)
 599 {
 600         int ret;
 601
 602         if (!driver || !data)
 603                 return SR_ERR;
 604
 605         if (!driver->config_get)
 606                 return SR_ERR_ARG;
 607
 608         if ((ret = driver->config_get(key, data, sdi, probe_group)) == SR_OK) {
 609                 /* Got a floating reference from the driver. Sink it here,
 610                  * caller will need to unref when done with it. */
 611                 g_variant_ref_sink(*data);
 612         }
 613
 614         return ret;
 615 }
 616
 617 /**
 618  * Set value of a configuration key in a device instance.
 619  *
 620  * @param[in] sdi The device instance.
 621  * @param[in] probe_group The probe group on the device for which to list the
 622  *                    values, or NULL.
 623  * @param[in] key The configuration key (SR_CONF_*).
 624  * @param data The new value for the key, as a GVariant with GVariantType
 625  *        appropriate to that key. A floating reference can be passed
 626  *        in; its refcount will be sunk and unreferenced after use.
 627  *
 628  * @retval SR_OK Success.
 629  * @retval SR_ERR Error.
 630  * @retval SR_ERR_ARG The driver doesn't know that key, but this is not to be
 631  *          interpreted as an error by the caller; merely as an indication
 632  *          that it's not applicable.
 633  */
 634 SR_API int sr_config_set(const struct sr_dev_inst *sdi,
 635                 const struct sr_probe_group *probe_group,
 636                 int key, GVariant *data)
 637 {
 638         int ret;
 639
 640         g_variant_ref_sink(data);
 641
 642         if (!sdi || !sdi->driver || !data)
 643                 ret = SR_ERR;
 644         else if (!sdi->driver->config_set)
 645                 ret = SR_ERR_ARG;
 646         else
 647                 ret = sdi->driver->config_set(key, data, sdi, probe_group);
 648
 649         g_variant_unref(data);
 650
 651         return ret;
 652 }
 653
 654 /**
 655  * Apply configuration settings to the device hardware.
 656  *
 657  * @param sdi The device instance.
 658  *
 659  * @return SR_OK upon success or SR_ERR in case of error.
 660  */
 661 SR_API int sr_config_commit(const struct sr_dev_inst *sdi)
 662 {
 663         int ret;
 664
 665         if (!sdi || !sdi->driver)
 666                 ret = SR_ERR;
 667         else if (!sdi->driver->config_commit)
 668                 ret = SR_OK;
 669         else
 670                 ret = sdi->driver->config_commit(sdi);
 671
 672         return ret;
 673 }
 674
 675 /**
 676  * List all possible values for a configuration key.
 677  *
 678  * @param[in] driver The sr_dev_driver struct to query.
 679  * @param[in] sdi (optional) If the key is specific to a device, this must
 680  *            contain a pointer to the struct sr_dev_inst to be checked.
 681  * @param[in] probe_group The probe group on the device for which to list the
 682  *                    values, or NULL.
 683  * @param[in] key The configuration key (SR_CONF_*).
 684  * @param[in,out] data A pointer to a GVariant where the list will be stored.
 685  *             The caller is given ownership of the GVariant and must thus
 686  *             unref the GVariant after use. However if this function
 687  *             returns an error code, the field should be considered
 688  *             unused, and should not be unreferenced.
 689  *
 690  * @retval SR_OK Success.
 691  * @retval SR_ERR Error.
 692  * @retval SR_ERR_ARG The driver doesn't know that key, but this is not to be
 693  *          interpreted as an error by the caller; merely as an indication
 694  *          that it's not applicable.
 695  */
 696 SR_API int sr_config_list(const struct sr_dev_driver *driver,
 697                 const struct sr_dev_inst *sdi,
 698                 const struct sr_probe_group *probe_group,
 699                 int key, GVariant **data)
 700 {
 701         int ret;
 702
 703         if (!driver || !data)
 704                 ret = SR_ERR;
 705         else if (!driver->config_list)
 706                 ret = SR_ERR_ARG;
 707         else if ((ret = driver->config_list(key, data, sdi, probe_group)) == SR_OK)
 708                 g_variant_ref_sink(*data);
 709
 710         return ret;
 711 }
 712
 713 /**
 714  * Get information about a configuration key, by key.
 715  *
 716  * @param[in] key The configuration key.
 717  *
 718  * @return A pointer to a struct sr_config_info, or NULL if the key
 719  *         was not found.
 720  */
 721 SR_API const struct sr_config_info *sr_config_info_get(int key)
 722 {
 723         int i;
 724
 725         for (i = 0; sr_config_info_data[i].key; i++) {
 726                 if (sr_config_info_data[i].key == key)
 727                         return &sr_config_info_data[i];
 728         }
 729
 730         return NULL;
 731 }
 732
 733 /**
 734  * Get information about a configuration key, by name.
 735  *
 736  * @param[in] optname The configuration key.
 737  *
 738  * @return A pointer to a struct sr_config_info, or NULL if the key
 739  *         was not found.
 740  */
 741 SR_API const struct sr_config_info *sr_config_info_name_get(const char *optname)
 742 {
 743         int i;
 744
 745         for (i = 0; sr_config_info_data[i].key; i++) {
 746                 if (!strcmp(sr_config_info_data[i].id, optname))
 747                         return &sr_config_info_data[i];
 748         }
 749
 750         return NULL;
 751 }
 752
 753 /* Unnecessary level of indirection follows. */
 754
 755 /** @private
 756  *  @see sr_session_source_remove()
 757  */
 758 SR_PRIV int sr_source_remove(int fd)
 759 {
 760         return sr_session_source_remove(fd);
 761 }
 762
 763 /** @private
 764  *  @see sr_session_source_add()
 765  */
 766 SR_PRIV int sr_source_add(int fd, int events, int timeout,
 767                           sr_receive_data_callback_t cb, void *cb_data)
 768 {
 769         return sr_session_source_add(fd, events, timeout, cb, cb_data);
 770 }
 771
 772 /** @} */