+SR_PRIV extern const struct sr_scpi_dev_inst scpi_serial_dev;
+SR_PRIV extern const struct sr_scpi_dev_inst scpi_tcp_raw_dev;
+SR_PRIV extern const struct sr_scpi_dev_inst scpi_tcp_rigol_dev;
+SR_PRIV extern const struct sr_scpi_dev_inst scpi_usbtmc_libusb_dev;
+SR_PRIV extern const struct sr_scpi_dev_inst scpi_vxi_dev;
+SR_PRIV extern const struct sr_scpi_dev_inst scpi_visa_dev;
+
+static const struct sr_scpi_dev_inst *scpi_devs[] = {
+ &scpi_tcp_raw_dev,
+ &scpi_tcp_rigol_dev,
+#ifdef HAVE_LIBUSB_1_0
+ &scpi_usbtmc_libusb_dev,
+#endif
+#if HAVE_RPC
+ &scpi_vxi_dev,
+#endif
+#ifdef HAVE_LIBREVISA
+ &scpi_visa_dev,
+#endif
+#ifdef HAVE_LIBSERIALPORT
+ &scpi_serial_dev, /* must be last as it matches any resource */
+#endif
+};
+
+static struct sr_dev_inst *sr_scpi_scan_resource(struct drv_context *drvc,
+ const char *resource, const char *serialcomm,
+ struct sr_dev_inst *(*probe_device)(struct sr_scpi_dev_inst *scpi))
+{
+ struct sr_scpi_dev_inst *scpi;
+ struct sr_dev_inst *sdi;
+
+ if (!(scpi = scpi_dev_inst_new(drvc, resource, serialcomm)))
+ return NULL;
+
+ if (sr_scpi_open(scpi) != SR_OK) {
+ sr_info("Couldn't open SCPI device.");
+ sr_scpi_free(scpi);
+ return NULL;
+ };
+
+ if ((sdi = probe_device(scpi)))
+ return sdi;
+
+ sr_scpi_close(scpi);
+ sr_scpi_free(scpi);
+ return NULL;
+}
+
+SR_PRIV GSList *sr_scpi_scan(struct drv_context *drvc, GSList *options,
+ struct sr_dev_inst *(*probe_device)(struct sr_scpi_dev_inst *scpi))
+{
+ GSList *resources, *l, *devices;
+ struct sr_dev_inst *sdi;
+ const char *resource = NULL;
+ const char *serialcomm = NULL;
+ gchar **res;
+ unsigned i;
+
+ for (l = options; l; l = l->next) {
+ struct sr_config *src = l->data;
+ switch (src->key) {
+ case SR_CONF_CONN:
+ resource = g_variant_get_string(src->data, NULL);
+ break;
+ case SR_CONF_SERIALCOMM:
+ serialcomm = g_variant_get_string(src->data, NULL);
+ break;
+ }
+ }
+
+ devices = NULL;
+ for (i = 0; i < ARRAY_SIZE(scpi_devs); i++) {
+ if ((resource && strcmp(resource, scpi_devs[i]->prefix))
+ || !scpi_devs[i]->scan)
+ continue;
+ resources = scpi_devs[i]->scan(drvc);
+ for (l = resources; l; l = l->next) {
+ res = g_strsplit(l->data, ":", 2);
+ if (res[0] && (sdi = sr_scpi_scan_resource(drvc, res[0],
+ serialcomm ? serialcomm : res[1], probe_device)))
+ devices = g_slist_append(devices, sdi);
+ g_strfreev(res);
+ }
+ g_slist_free_full(resources, g_free);
+ }
+
+ if (!devices && resource) {
+ sdi = sr_scpi_scan_resource(drvc, resource, serialcomm, probe_device);
+ devices = g_slist_append(NULL, sdi);
+ }
+
+ /* Tack a copy of the newly found devices onto the driver list. */
+ if (devices)
+ drvc->instances = g_slist_concat(drvc->instances, g_slist_copy(devices));
+
+ return devices;
+}
+
+SR_PRIV struct sr_scpi_dev_inst *scpi_dev_inst_new(struct drv_context *drvc,
+ const char *resource, const char *serialcomm)
+{
+ struct sr_scpi_dev_inst *scpi = NULL;
+ const struct sr_scpi_dev_inst *scpi_dev;
+ gchar **params;
+ unsigned i;
+
+ for (i = 0; i < ARRAY_SIZE(scpi_devs); i++) {
+ scpi_dev = scpi_devs[i];
+ if (!strncmp(resource, scpi_dev->prefix, strlen(scpi_dev->prefix))) {
+ sr_dbg("Opening %s device %s.", scpi_dev->name, resource);
+ scpi = g_malloc(sizeof(*scpi));
+ *scpi = *scpi_dev;
+ scpi->priv = g_malloc0(scpi->priv_size);
+ params = g_strsplit(resource, "/", 0);
+ if (scpi->dev_inst_new(scpi->priv, drvc, resource,
+ params, serialcomm) != SR_OK) {
+ sr_scpi_free(scpi);
+ scpi = NULL;
+ }
+ g_strfreev(params);
+ break;
+ }
+ }
+
+ return scpi;
+}
+