+
+ if (driver->config_list(SR_CONF_DEVICE_OPTIONS, &gvar, sdi, cg) != SR_OK)
+ return NULL;
+
+ opts = g_variant_get_fixed_array(gvar, &num_opts, sizeof(uint32_t));
+
+ result = g_array_sized_new(FALSE, FALSE, sizeof(uint32_t), num_opts);
+
+ for (i = 0; i < num_opts; i++) {
+ opt = opts[i] & SR_CONF_MASK;
+ g_array_insert_val(result, i, opt);
+ }
+
+ g_variant_unref(gvar);
+
+ return result;
+}
+
+/**
+ * Enumerate the configuration capabilities supported by a device instance
+ * for a given configuration key.
+ *
+ * @param sdi Pointer to the device instance to be checked. Must not be NULL.
+ * If the device's 'driver' field is NULL (virtual device), this
+ * function will always return FALSE (virtual devices don't have
+ * a hardware capabilities list).
+ * @param cg Pointer to a channel group, if a specific channel group is to
+ * be checked. Must be NULL to check device-wide options.
+ * @param[in] key The option that should be checked for is supported by the
+ * specified device.
+ *
+ * @retval A bitmask of enum sr_configcap values, which will be zero for
+ * invalid inputs or if the key is unsupported.
+ *
+ * @since 0.4.0
+ */
+SR_API int sr_dev_config_capabilities_list(const struct sr_dev_inst *sdi,
+ const struct sr_channel_group *cg, const int key)
+{
+ GVariant *gvar;
+ const int *devopts;
+ gsize num_opts, i;
+ int ret;
+
+ if (!sdi || !sdi->driver || !sdi->driver->config_list)
+ return 0;
+
+ if (sdi->driver->config_list(SR_CONF_DEVICE_OPTIONS,
+ &gvar, sdi, cg) != SR_OK)
+ return 0;
+
+ ret = 0;
+ devopts = g_variant_get_fixed_array(gvar, &num_opts, sizeof(int32_t));
+ for (i = 0; i < num_opts; i++) {
+ if ((devopts[i] & SR_CONF_MASK) == key) {
+ ret = devopts[i] & ~SR_CONF_MASK;
+ break;
+ }