libsigrok/hwdriver.c

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/*
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* This file is part of the libsigrok project.
*
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* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#include <string.h>
#include <glib.h>
#include "config.h" /* Needed for HAVE_LIBUSB_1_0 and others. */
#include "libsigrok.h"
#include "libsigrok-internal.h"
#define LOG_PREFIX "hwdriver"
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/**
* @file
*
* Hardware driver handling in libsigrok.
*/
/**
* @defgroup grp_driver Hardware drivers
*
* Hardware driver handling in libsigrok.
*
* @{
*/
static struct sr_config_info sr_config_info_data[] = {
{SR_CONF_CONN, SR_T_CHAR, "conn",
"Connection", NULL},
{SR_CONF_SERIALCOMM, SR_T_CHAR, "serialcomm",
"Serial communication", NULL},
{SR_CONF_SAMPLERATE, SR_T_UINT64, "samplerate",
"Sample rate", NULL},
{SR_CONF_CAPTURE_RATIO, SR_T_UINT64, "captureratio",
"Pre-trigger capture ratio", NULL},
{SR_CONF_PATTERN_MODE, SR_T_CHAR, "pattern",
"Pattern", NULL},
{SR_CONF_TRIGGER_TYPE, SR_T_CHAR, "triggertype",
"Trigger types", NULL},
{SR_CONF_EXTERNAL_CLOCK, SR_T_BOOL, "external_clock",
"External clock mode", NULL},
{SR_CONF_SWAP, SR_T_BOOL, "swap",
"Swap channel order", NULL},
{SR_CONF_RLE, SR_T_BOOL, "rle",
"Run Length Encoding", NULL},
{SR_CONF_TRIGGER_SLOPE, SR_T_CHAR, "triggerslope",
"Trigger slope", NULL},
{SR_CONF_TRIGGER_SOURCE, SR_T_CHAR, "triggersource",
"Trigger source", NULL},
{SR_CONF_HORIZ_TRIGGERPOS, SR_T_FLOAT, "horiz_triggerpos",
"Horizontal trigger position", NULL},
{SR_CONF_BUFFERSIZE, SR_T_UINT64, "buffersize",
"Buffer size", NULL},
{SR_CONF_TIMEBASE, SR_T_RATIONAL_PERIOD, "timebase",
"Time base", NULL},
{SR_CONF_FILTER, SR_T_CHAR, "filter",
"Filter targets", NULL},
{SR_CONF_VDIV, SR_T_RATIONAL_VOLT, "vdiv",
"Volts/div", NULL},
{SR_CONF_COUPLING, SR_T_CHAR, "coupling",
"Coupling", NULL},
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{SR_CONF_DATALOG, SR_T_BOOL, "datalog",
"Datalog", NULL},
{SR_CONF_SPL_WEIGHT_FREQ, SR_T_CHAR, "spl_weight_freq",
"Sound pressure level frequency weighting", NULL},
{SR_CONF_SPL_WEIGHT_TIME, SR_T_CHAR, "spl_weight_time",
"Sound pressure level time weighting", NULL},
{SR_CONF_HOLD_MAX, SR_T_BOOL, "hold_max",
"Hold max", NULL},
{SR_CONF_HOLD_MIN, SR_T_BOOL, "hold_min",
"Hold min", NULL},
{SR_CONF_SPL_MEASUREMENT_RANGE, SR_T_UINT64_RANGE, "spl_meas_range",
"Sound pressure level measurement range", NULL},
{SR_CONF_VOLTAGE_THRESHOLD, SR_T_DOUBLE_RANGE, "voltage_threshold",
"Voltage threshold", NULL },
{SR_CONF_POWER_OFF, SR_T_BOOL, "power_off",
"Power off", NULL},
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{SR_CONF_DATA_SOURCE, SR_T_CHAR, "data_source",
"Data source", NULL},
{SR_CONF_NUM_LOGIC_PROBES, SR_T_INT32, "logic_probes",
"Number of logic probes", NULL},
{SR_CONF_NUM_ANALOG_PROBES, SR_T_INT32, "analog_probes",
"Number of analog probes", NULL},
{SR_CONF_OUTPUT_VOLTAGE, SR_T_FLOAT, "output_voltage",
"Current output voltage", NULL},
{SR_CONF_OUTPUT_VOLTAGE_MAX, SR_T_FLOAT, "output_voltage_max",
"Maximum output voltage", NULL},
{SR_CONF_OUTPUT_CURRENT, SR_T_FLOAT, "output_current",
"Current output current", NULL},
{SR_CONF_OUTPUT_CURRENT_MAX, SR_T_FLOAT, "output_current_max",
"Maximum output current", NULL},
{SR_CONF_OUTPUT_ENABLED, SR_T_BOOL, "output_enabled",
"Output enabled", NULL},
{SR_CONF_OUTPUT_CHANNEL, SR_T_CHAR, "output_channel",
"Output channel modes", NULL},
{SR_CONF_OVER_VOLTAGE_PROTECTION, SR_T_BOOL, "ovp",
"Over-voltage protection", NULL},
{SR_CONF_OVER_CURRENT_PROTECTION, SR_T_BOOL, "ocp",
"Over-current protection", NULL},
{SR_CONF_LIMIT_SAMPLES, SR_T_UINT64, "limit_samples",
"Sample limit", NULL},
{SR_CONF_CLOCK_EDGE, SR_T_CHAR, "clock_edge",
"Clock edge", NULL},
{0, 0, NULL, NULL, NULL},
};
/** @cond PRIVATE */
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#ifdef HAVE_HW_APPA_55II
extern SR_PRIV struct sr_dev_driver appa_55ii_driver_info;
#endif
#ifdef HAVE_HW_ATTEN_PPS3XXX
extern SR_PRIV struct sr_dev_driver atten_pps3203_driver_info;
#endif
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#ifdef HAVE_HW_BRYMEN_BM86X
extern SR_PRIV struct sr_dev_driver brymen_bm86x_driver_info;
#endif
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#ifdef HAVE_HW_BRYMEN_DMM
extern SR_PRIV struct sr_dev_driver brymen_bm857_driver_info;
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#endif
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#ifdef HAVE_HW_CEM_DT_885X
extern SR_PRIV struct sr_dev_driver cem_dt_885x_driver_info;
#endif
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#ifdef HAVE_HW_CENTER_3XX
extern SR_PRIV struct sr_dev_driver center_309_driver_info;
extern SR_PRIV struct sr_dev_driver voltcraft_k204_driver_info;
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#endif
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#ifdef HAVE_HW_COLEAD_SLM
extern SR_PRIV struct sr_dev_driver colead_slm_driver_info;
#endif
#ifdef HAVE_HW_CONRAD_DIGI_35_CPU
extern SR_PRIV struct sr_dev_driver conrad_digi_35_cpu_driver_info;
#endif
#ifdef HAVE_HW_DEMO
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extern SR_PRIV struct sr_dev_driver demo_driver_info;
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#endif
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#ifdef HAVE_HW_GMC_MH_1X_2X
extern SR_PRIV struct sr_dev_driver gmc_mh_1x_2x_rs232_driver_info;
extern SR_PRIV struct sr_dev_driver gmc_mh_2x_bd232_driver_info;
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#endif
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#ifdef HAVE_HW_HAMEG_HMO
extern SR_PRIV struct sr_dev_driver hameg_hmo_driver_info;
#endif
#ifdef HAVE_HW_IKALOGIC_SCANALOGIC2
extern SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info;
#endif
#ifdef HAVE_HW_IKALOGIC_SCANAPLUS
extern SR_PRIV struct sr_dev_driver ikalogic_scanaplus_driver_info;
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#endif
#ifdef HAVE_HW_KECHENG_KC_330B
extern SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info;
#endif
#ifdef HAVE_HW_LASCAR_EL_USB
extern SR_PRIV struct sr_dev_driver lascar_el_usb_driver_info;
#endif
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#ifdef HAVE_HW_MIC_985XX
extern SR_PRIV struct sr_dev_driver mic_98581_driver_info;
extern SR_PRIV struct sr_dev_driver mic_98583_driver_info;
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#endif
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#ifdef HAVE_HW_NORMA_DMM
extern SR_PRIV struct sr_dev_driver norma_dmm_driver_info;
#endif
#ifdef HAVE_HW_OLS
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extern SR_PRIV struct sr_dev_driver ols_driver_info;
#endif
#ifdef HAVE_HW_RIGOL_DS
extern SR_PRIV struct sr_dev_driver rigol_ds_driver_info;
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#endif
#ifdef HAVE_HW_SALEAE_LOGIC16
extern SR_PRIV struct sr_dev_driver saleae_logic16_driver_info;
#endif
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#ifdef HAVE_HW_SYSCLK_LWLA
extern SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info;
#endif
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#ifdef HAVE_HW_TELEINFO
extern SR_PRIV struct sr_dev_driver teleinfo_driver_info;
#endif
#ifdef HAVE_HW_TONDAJ_SL_814
extern SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info;
#endif
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#ifdef HAVE_HW_UNI_T_UT32X
extern SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info;
#endif
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#ifdef HAVE_HW_VICTOR_DMM
extern SR_PRIV struct sr_dev_driver victor_dmm_driver_info;
#endif
#ifdef HAVE_HW_ZEROPLUS_LOGIC_CUBE
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extern SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
#endif
#ifdef HAVE_HW_ASIX_SIGMA
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extern SR_PRIV struct sr_dev_driver asix_sigma_driver_info;
#endif
#ifdef HAVE_HW_CHRONOVU_LA8
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extern SR_PRIV struct sr_dev_driver chronovu_la8_driver_info;
#endif
#ifdef HAVE_HW_LINK_MSO19
extern SR_PRIV struct sr_dev_driver link_mso19_driver_info;
#endif
#ifdef HAVE_HW_ALSA
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extern SR_PRIV struct sr_dev_driver alsa_driver_info;
#endif
#ifdef HAVE_HW_FX2LAFW
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extern SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
#endif
#ifdef HAVE_HW_HANTEK_DSO
extern SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
#endif
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#ifdef HAVE_HW_AGILENT_DMM
extern SR_PRIV struct sr_dev_driver agdmm_driver_info;
#endif
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#ifdef HAVE_HW_FLUKE_DMM
extern SR_PRIV struct sr_dev_driver flukedmm_driver_info;
#endif
#ifdef HAVE_HW_SERIAL_DMM
extern SR_PRIV struct sr_dev_driver bbcgm_m2110_driver_info;
extern SR_PRIV struct sr_dev_driver digitek_dt4000zc_driver_info;
extern SR_PRIV struct sr_dev_driver tekpower_tp4000zc_driver_info;
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extern SR_PRIV struct sr_dev_driver metex_me31_driver_info;
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extern SR_PRIV struct sr_dev_driver peaktech_3410_driver_info;
extern SR_PRIV struct sr_dev_driver mastech_mas345_driver_info;
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extern SR_PRIV struct sr_dev_driver va_va18b_driver_info;
extern SR_PRIV struct sr_dev_driver va_va40b_driver_info;
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extern SR_PRIV struct sr_dev_driver metex_m3640d_driver_info;
extern SR_PRIV struct sr_dev_driver metex_m4650cr_driver_info;
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extern SR_PRIV struct sr_dev_driver peaktech_4370_driver_info;
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extern SR_PRIV struct sr_dev_driver pce_pce_dm32_driver_info;
extern SR_PRIV struct sr_dev_driver radioshack_22_168_driver_info;
extern SR_PRIV struct sr_dev_driver radioshack_22_805_driver_info;
extern SR_PRIV struct sr_dev_driver radioshack_22_812_driver_info;
extern SR_PRIV struct sr_dev_driver tecpel_dmm_8061_ser_driver_info;
extern SR_PRIV struct sr_dev_driver voltcraft_m3650cr_driver_info;
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extern SR_PRIV struct sr_dev_driver voltcraft_m3650d_driver_info;
extern SR_PRIV struct sr_dev_driver voltcraft_m4650cr_driver_info;
extern SR_PRIV struct sr_dev_driver voltcraft_me42_driver_info;
extern SR_PRIV struct sr_dev_driver voltcraft_vc820_ser_driver_info;
extern SR_PRIV struct sr_dev_driver voltcraft_vc830_ser_driver_info;
extern SR_PRIV struct sr_dev_driver voltcraft_vc840_ser_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut60a_ser_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut60e_ser_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut60g_ser_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut61b_ser_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut61c_ser_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut61d_ser_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut61e_ser_driver_info;
extern SR_PRIV struct sr_dev_driver iso_tech_idm103n_driver_info;
extern SR_PRIV struct sr_dev_driver tenma_72_7745_ser_driver_info;
extern SR_PRIV struct sr_dev_driver tenma_72_7750_ser_driver_info;
#endif
#ifdef HAVE_HW_UNI_T_DMM
extern SR_PRIV struct sr_dev_driver tecpel_dmm_8061_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut60a_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut60e_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut60g_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut61b_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut61c_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info;
extern SR_PRIV struct sr_dev_driver uni_t_ut61e_driver_info;
extern SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info;
extern SR_PRIV struct sr_dev_driver voltcraft_vc830_driver_info;
extern SR_PRIV struct sr_dev_driver voltcraft_vc840_driver_info;
extern SR_PRIV struct sr_dev_driver tenma_72_7745_driver_info;
extern SR_PRIV struct sr_dev_driver tenma_72_7750_driver_info;
#endif
/** @endcond */
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static struct sr_dev_driver *drivers_list[] = {
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#ifdef HAVE_HW_APPA_55II
&appa_55ii_driver_info,
#endif
#ifdef HAVE_HW_ATTEN_PPS3XXX
&atten_pps3203_driver_info,
#endif
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#ifdef HAVE_HW_BRYMEN_BM86X
&brymen_bm86x_driver_info,
#endif
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#ifdef HAVE_HW_BRYMEN_DMM
&brymen_bm857_driver_info,
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#endif
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#ifdef HAVE_HW_CEM_DT_885X
&cem_dt_885x_driver_info,
#endif
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#ifdef HAVE_HW_CENTER_3XX
&center_309_driver_info,
&voltcraft_k204_driver_info,
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#endif
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#ifdef HAVE_HW_COLEAD_SLM
&colead_slm_driver_info,
#endif
#ifdef HAVE_HW_CONRAD_DIGI_35_CPU
&conrad_digi_35_cpu_driver_info,
#endif
#ifdef HAVE_HW_DEMO
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&demo_driver_info,
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#endif
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#ifdef HAVE_HW_GMC_MH_1X_2X
&gmc_mh_1x_2x_rs232_driver_info,
&gmc_mh_2x_bd232_driver_info,
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#endif
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#ifdef HAVE_HW_HAMEG_HMO
&hameg_hmo_driver_info,
#endif
#ifdef HAVE_HW_IKALOGIC_SCANALOGIC2
&ikalogic_scanalogic2_driver_info,
#endif
#ifdef HAVE_HW_IKALOGIC_SCANAPLUS
&ikalogic_scanaplus_driver_info,
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#endif
#ifdef HAVE_HW_KECHENG_KC_330B
&kecheng_kc_330b_driver_info,
#endif
#ifdef HAVE_HW_LASCAR_EL_USB
&lascar_el_usb_driver_info,
#endif
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#ifdef HAVE_HW_MIC_985XX
&mic_98581_driver_info,
&mic_98583_driver_info,
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#endif
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#ifdef HAVE_HW_NORMA_DMM
&norma_dmm_driver_info,
#endif
#ifdef HAVE_HW_OLS
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&ols_driver_info,
#endif
#ifdef HAVE_HW_RIGOL_DS
&rigol_ds_driver_info,
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#endif
#ifdef HAVE_HW_SALEAE_LOGIC16
&saleae_logic16_driver_info,
#endif
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#ifdef HAVE_HW_SYSCLK_LWLA
&sysclk_lwla_driver_info,
#endif
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#ifdef HAVE_HW_TELEINFO
&teleinfo_driver_info,
#endif
#ifdef HAVE_HW_TONDAJ_SL_814
&tondaj_sl_814_driver_info,
#endif
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#ifdef HAVE_HW_UNI_T_UT32X
&uni_t_ut32x_driver_info,
#endif
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#ifdef HAVE_HW_VICTOR_DMM
&victor_dmm_driver_info,
#endif
#ifdef HAVE_HW_ZEROPLUS_LOGIC_CUBE
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&zeroplus_logic_cube_driver_info,
#endif
#ifdef HAVE_HW_ASIX_SIGMA
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&asix_sigma_driver_info,
#endif
#ifdef HAVE_HW_CHRONOVU_LA8
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&chronovu_la8_driver_info,
#endif
#ifdef HAVE_HW_LINK_MSO19
&link_mso19_driver_info,
#endif
#ifdef HAVE_HW_ALSA
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&alsa_driver_info,
#endif
#ifdef HAVE_HW_FX2LAFW
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&fx2lafw_driver_info,
#endif
#ifdef HAVE_HW_HANTEK_DSO
&hantek_dso_driver_info,
#endif
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#ifdef HAVE_HW_AGILENT_DMM
&agdmm_driver_info,
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#endif
#ifdef HAVE_HW_FLUKE_DMM
&flukedmm_driver_info,
#endif
#ifdef HAVE_HW_SERIAL_DMM
&bbcgm_m2110_driver_info,
&digitek_dt4000zc_driver_info,
&tekpower_tp4000zc_driver_info,
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&metex_me31_driver_info,
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&peaktech_3410_driver_info,
&mastech_mas345_driver_info,
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&va_va18b_driver_info,
&va_va40b_driver_info,
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&metex_m3640d_driver_info,
&metex_m4650cr_driver_info,
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&peaktech_4370_driver_info,
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&pce_pce_dm32_driver_info,
&radioshack_22_168_driver_info,
&radioshack_22_805_driver_info,
&radioshack_22_812_driver_info,
&tecpel_dmm_8061_ser_driver_info,
&voltcraft_m3650cr_driver_info,
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&voltcraft_m3650d_driver_info,
&voltcraft_m4650cr_driver_info,
&voltcraft_me42_driver_info,
&voltcraft_vc820_ser_driver_info,
&voltcraft_vc830_ser_driver_info,
&voltcraft_vc840_ser_driver_info,
&uni_t_ut60a_ser_driver_info,
&uni_t_ut60e_ser_driver_info,
&uni_t_ut60g_ser_driver_info,
&uni_t_ut61b_ser_driver_info,
&uni_t_ut61c_ser_driver_info,
&uni_t_ut61d_ser_driver_info,
&uni_t_ut61e_ser_driver_info,
&iso_tech_idm103n_driver_info,
&tenma_72_7745_ser_driver_info,
&tenma_72_7750_ser_driver_info,
#endif
#ifdef HAVE_HW_UNI_T_DMM
&tecpel_dmm_8061_driver_info,
&uni_t_ut60a_driver_info,
&uni_t_ut60e_driver_info,
&uni_t_ut60g_driver_info,
&uni_t_ut61b_driver_info,
&uni_t_ut61c_driver_info,
&uni_t_ut61d_driver_info,
&uni_t_ut61e_driver_info,
&voltcraft_vc820_driver_info,
&voltcraft_vc830_driver_info,
&voltcraft_vc840_driver_info,
&tenma_72_7745_driver_info,
&tenma_72_7750_driver_info,
#endif
NULL,
};
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/**
* Return the list of supported hardware drivers.
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*
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* @return Pointer to the NULL-terminated list of hardware driver pointers.
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*/
SR_API struct sr_dev_driver **sr_driver_list(void)
{
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return drivers_list;
}
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/**
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* Initialize a hardware driver.
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*
* This usually involves memory allocations and variable initializations
* within the driver, but _not_ scanning for attached devices.
* The API call sr_driver_scan() is used for that.
*
* @param ctx A libsigrok context object allocated by a previous call to
* sr_init(). Must not be NULL.
* @param driver The driver to initialize. This must be a pointer to one of
* the entries returned by sr_driver_list(). Must not be NULL.
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*
* @retval SR_OK Success
* @retval SR_ERR_ARG Invalid parameter(s).
* @retval SR_ERR_BUG Internal errors.
* @retval other Another negative error code upon other errors.
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*/
SR_API int sr_driver_init(struct sr_context *ctx, struct sr_dev_driver *driver)
{
int ret;
if (!ctx) {
sr_err("Invalid libsigrok context, can't initialize.");
return SR_ERR_ARG;
}
if (!driver) {
sr_err("Invalid driver, can't initialize.");
return SR_ERR_ARG;
}
sr_spew("Initializing driver '%s'.", driver->name);
if ((ret = driver->init(ctx)) < 0)
sr_err("Failed to initialize the driver: %d.", ret);
return ret;
}
/**
* Tell a hardware driver to scan for devices.
*
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* In addition to the detection, the devices that are found are also
* initialized automatically. On some devices, this involves a firmware upload,
* or other such measures.
*
* The order in which the system is scanned for devices is not specified. The
* caller should not assume or rely on any specific order.
*
* Before calling sr_driver_scan(), the user must have previously initialized
* the driver by calling sr_driver_init().
*
* @param driver The driver that should scan. This must be a pointer to one of
* the entries returned by sr_driver_list(). Must not be NULL.
* @param options A list of 'struct sr_hwopt' options to pass to the driver's
* scanner. Can be NULL/empty.
*
* @return A GSList * of 'struct sr_dev_inst', or NULL if no devices were
* found (or errors were encountered). This list must be freed by the
* caller using g_slist_free(), but without freeing the data pointed
* to in the list.
*/
SR_API GSList *sr_driver_scan(struct sr_dev_driver *driver, GSList *options)
{
GSList *l;
if (!driver) {
sr_err("Invalid driver, can't scan for devices.");
return NULL;
}
if (!driver->priv) {
sr_err("Driver not initialized, can't scan for devices.");
return NULL;
}
l = driver->scan(options);
sr_spew("Scan of '%s' found %d devices.", driver->name,
g_slist_length(l));
return l;
}
/** Call driver cleanup function for all drivers.
* @private */
SR_PRIV void sr_hw_cleanup_all(void)
{
int i;
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struct sr_dev_driver **drivers;
drivers = sr_driver_list();
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for (i = 0; drivers[i]; i++) {
if (drivers[i]->cleanup)
drivers[i]->cleanup();
}
}
/** Allocate struct sr_config.
* A floating reference can be passed in for data.
* @private
*/
SR_PRIV struct sr_config *sr_config_new(int key, GVariant *data)
{
struct sr_config *src;
if (!(src = g_try_malloc(sizeof(struct sr_config))))
return NULL;
src->key = key;
src->data = g_variant_ref_sink(data);
return src;
}
/** Free struct sr_config.
* @private
*/
SR_PRIV void sr_config_free(struct sr_config *src)
{
if (!src || !src->data) {
sr_err("%s: invalid data!", __func__);
return;
}
g_variant_unref(src->data);
g_free(src);
}
/**
* Query value of a configuration key at the given driver or device instance.
*
* @param[in] driver The sr_dev_driver struct to query.
* @param[in] sdi (optional) If the key is specific to a device, this must
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* contain a pointer to the struct sr_dev_inst to be checked.
* Otherwise it must be NULL.
* @param[in] probe_group The probe group on the device for which to list the
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* values, or NULL.
* @param[in] key The configuration key (SR_CONF_*).
* @param[in,out] data Pointer to a GVariant where the value will be stored.
* Must not be NULL. The caller is given ownership of the GVariant
* and must thus decrease the refcount after use. However if
* this function returns an error code, the field should be
* considered unused, and should not be unreferenced.
*
* @retval SR_OK Success.
* @retval SR_ERR Error.
* @retval SR_ERR_ARG The driver doesn't know that key, but this is not to be
* interpreted as an error by the caller; merely as an indication
* that it's not applicable.
*/
SR_API int sr_config_get(const struct sr_dev_driver *driver,
const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group,
int key, GVariant **data)
{
int ret;
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if (!driver || !data)
return SR_ERR;
if (!driver->config_get)
return SR_ERR_ARG;
if ((ret = driver->config_get(key, data, sdi, probe_group)) == SR_OK) {
/* Got a floating reference from the driver. Sink it here,
* caller will need to unref when done with it. */
g_variant_ref_sink(*data);
}
return ret;
}
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/**
* Set value of a configuration key in a device instance.
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*
* @param[in] sdi The device instance.
* @param[in] probe_group The probe group on the device for which to list the
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* values, or NULL.
* @param[in] key The configuration key (SR_CONF_*).
* @param data The new value for the key, as a GVariant with GVariantType
* appropriate to that key. A floating reference can be passed
* in; its refcount will be sunk and unreferenced after use.
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*
* @retval SR_OK Success.
* @retval SR_ERR Error.
* @retval SR_ERR_ARG The driver doesn't know that key, but this is not to be
* interpreted as an error by the caller; merely as an indication
* that it's not applicable.
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*/
SR_API int sr_config_set(const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group,
int key, GVariant *data)
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{
int ret;
g_variant_ref_sink(data);
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if (!sdi || !sdi->driver || !data)
ret = SR_ERR;
else if (!sdi->driver->config_set)
ret = SR_ERR_ARG;
else
ret = sdi->driver->config_set(key, data, sdi, probe_group);
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g_variant_unref(data);
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return ret;
}
/**
* Apply configuration settings to the device hardware.
*
* @param sdi The device instance.
*
* @return SR_OK upon success or SR_ERR in case of error.
*/
SR_API int sr_config_commit(const struct sr_dev_inst *sdi)
{
int ret;
if (!sdi || !sdi->driver)
ret = SR_ERR;
else if (!sdi->driver->config_commit)
ret = SR_OK;
else
ret = sdi->driver->config_commit(sdi);
return ret;
}
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/**
* List all possible values for a configuration key.
*
* @param[in] driver The sr_dev_driver struct to query.
* @param[in] sdi (optional) If the key is specific to a device, this must
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* contain a pointer to the struct sr_dev_inst to be checked.
* @param[in] probe_group The probe group on the device for which to list the
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* values, or NULL.
* @param[in] key The configuration key (SR_CONF_*).
* @param[in,out] data A pointer to a GVariant where the list will be stored.
* The caller is given ownership of the GVariant and must thus
* unref the GVariant after use. However if this function
* returns an error code, the field should be considered
* unused, and should not be unreferenced.
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*
* @retval SR_OK Success.
* @retval SR_ERR Error.
* @retval SR_ERR_ARG The driver doesn't know that key, but this is not to be
* interpreted as an error by the caller; merely as an indication
* that it's not applicable.
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*/
SR_API int sr_config_list(const struct sr_dev_driver *driver,
const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group,
int key, GVariant **data)
{
int ret;
if (!driver || !data)
ret = SR_ERR;
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else if (!driver->config_list)
ret = SR_ERR_ARG;
else if ((ret = driver->config_list(key, data, sdi, probe_group)) == SR_OK)
g_variant_ref_sink(*data);
return ret;
}
/**
* Get information about a configuration key, by key.
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*
* @param[in] key The configuration key.
*
* @return A pointer to a struct sr_config_info, or NULL if the key
* was not found.
*/
SR_API const struct sr_config_info *sr_config_info_get(int key)
{
int i;
for (i = 0; sr_config_info_data[i].key; i++) {
if (sr_config_info_data[i].key == key)
return &sr_config_info_data[i];
}
return NULL;
}
/**
* Get information about a configuration key, by name.
*
* @param[in] optname The configuration key.
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*
* @return A pointer to a struct sr_config_info, or NULL if the key
* was not found.
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*/
SR_API const struct sr_config_info *sr_config_info_name_get(const char *optname)
{
int i;
for (i = 0; sr_config_info_data[i].key; i++) {
if (!strcmp(sr_config_info_data[i].id, optname))
return &sr_config_info_data[i];
}
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return NULL;
}
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/* Unnecessary level of indirection follows. */
/** @private
* @see sr_session_source_remove()
*/
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SR_PRIV int sr_source_remove(int fd)
{
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return sr_session_source_remove(fd);
}
/** @private
* @see sr_session_source_add()
*/
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SR_PRIV int sr_source_add(int fd, int events, int timeout,
sr_receive_data_callback_t cb, void *cb_data)
{
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return sr_session_source_add(fd, events, timeout, cb, cb_data);
}
/** @} */