+/* Find given conn_id in another USB enum. Identify Kingst LA model. */
+static int la2016_identify_enum(struct sr_dev_inst *sdi)
+{
+ struct sr_dev_driver *di;
+ struct drv_context *drvc;
+ struct sr_context *ctx;
+ libusb_device **devlist, *dev;
+ struct libusb_device_descriptor des;
+ int ret, id_ret;
+ size_t device_count, dev_idx;
+ char conn_id[64];
+
+ di = sdi->driver;
+ drvc = di->context;
+ ctx = drvc->sr_ctx;;
+
+ ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
+ if (ret < 0)
+ return SR_ERR_IO;
+ device_count = ret;
+ if (!device_count)
+ return SR_ERR_IO;
+ id_ret = SR_ERR_IO;
+ for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
+ dev = devlist[dev_idx];
+ libusb_get_device_descriptor(dev, &des);
+ if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
+ continue;
+ if (des.iProduct != LA2016_IPRODUCT_INDEX)
+ continue;
+ ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
+ if (ret < 0)
+ continue;
+ if (strcmp(sdi->connection_id, conn_id) != 0)
+ continue;
+ id_ret = la2016_identify_read(sdi, sdi->conn, dev, FALSE);
+ break;
+ }
+ libusb_free_device_list(devlist, 1);
+
+ return id_ret;
+}
+
+/* Wait for a device to re-appear after firmware upload. */
+static int la2016_identify_wait(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ uint64_t reset_done, now, elapsed_ms;
+ int ret;
+
+ devc = sdi->priv;
+
+ sr_info("Waiting for device to reset after firmware upload.");
+ now = g_get_monotonic_time();
+ reset_done = devc->fw_uploaded + RENUM_GONE_DELAY_MS * 1000;
+ if (now < reset_done)
+ g_usleep(reset_done - now);
+ do {
+ now = g_get_monotonic_time();
+ elapsed_ms = (now - devc->fw_uploaded) / 1000;
+ sr_spew("Waited %" PRIu64 "ms.", elapsed_ms);
+ ret = la2016_identify_enum(sdi);
+ if (ret == SR_OK) {
+ devc->fw_uploaded = 0;
+ break;
+ }
+ g_usleep(RENUM_POLL_INTERVAL_MS * 1000);
+ } while (elapsed_ms < RENUM_CHECK_PERIOD_MS);
+ if (ret != SR_OK) {
+ sr_err("Device failed to re-enumerate.");
+ return ret;
+ }
+ sr_info("Device came back after %" PRIi64 "ms.", elapsed_ms);
+
+ return SR_OK;
+}
+
+/*
+ * Open given conn_id from another USB enum. Used by dev_open(). Similar
+ * to, and should be kept in sync with la2016_identify_enum().
+ */
+static int la2016_open_enum(struct sr_dev_inst *sdi)
+{
+ struct sr_dev_driver *di;
+ struct drv_context *drvc;
+ struct sr_context *ctx;
+ libusb_device **devlist, *dev;
+ struct libusb_device_descriptor des;
+ int ret, open_ret;
+ size_t device_count, dev_idx;
+ char conn_id[64];
+
+ di = sdi->driver;
+ drvc = di->context;
+ ctx = drvc->sr_ctx;;
+
+ ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
+ if (ret < 0)
+ return SR_ERR_IO;
+ device_count = ret;
+ if (!device_count)
+ return SR_ERR_IO;
+ open_ret = SR_ERR_IO;
+ for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
+ dev = devlist[dev_idx];
+ libusb_get_device_descriptor(dev, &des);
+ if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
+ continue;
+ if (des.iProduct != LA2016_IPRODUCT_INDEX)
+ continue;
+ ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
+ if (ret < 0)
+ continue;
+ if (strcmp(sdi->connection_id, conn_id) != 0)
+ continue;
+ open_ret = la2016_open_usb(sdi->conn, dev, TRUE);
+ break;
+ }
+ libusb_free_device_list(devlist, 1);
+
+ return open_ret;
+}