@@ -314,6 +314,8 @@ struct joycon_ctlr {
 	struct led_classdev home_led;
 	enum joycon_ctlr_state ctlr_state;
 	spinlock_t lock;
+	u8 mac_addr[6];
+	char *mac_addr_str;
 
 	/* The following members are used for synchronous sends/receives */
 	enum joycon_msg_type msg_type;

@@ -975,6 +977,7 @@ static int joycon_input_create(struct joycon_ctlr *ctlr)
 	ctlr->input->id.vendor = hdev->vendor;
 	ctlr->input->id.product = hdev->product;
 	ctlr->input->id.version = hdev->version;
+	ctlr->input->uniq = ctlr->mac_addr_str;
 	ctlr->input->name = name;
 	input_set_drvdata(ctlr->input, ctlr);
 

@@ -1267,6 +1270,41 @@ static int joycon_power_supply_create(struct joycon_ctlr *ctlr)
 	return 0;
 }
 
+static int joycon_read_mac(struct joycon_ctlr *ctlr)
+{
+	int ret;
+	int i;
+	int j;
+	struct joycon_subcmd_request req = { 0 };
+	struct joycon_input_report *report;
+
+	req.subcmd_id = JC_SUBCMD_REQ_DEV_INFO;
+	ret = joycon_send_subcmd(ctlr, &req, 0, HZ);
+	if (ret) {
+		hid_err(ctlr->hdev, "Failed to get joycon info; ret=%d\n", ret);
+		return ret;
+	}
+
+	report = (struct joycon_input_report *)ctlr->input_buf;
+
+	for (i = 4, j = 0; j < 6; i++, j++)
+		ctlr->mac_addr[j] = report->reply.data[i];
+
+	ctlr->mac_addr_str = devm_kasprintf(&ctlr->hdev->dev, GFP_KERNEL,
+					    "%02X:%02X:%02X:%02X:%02X:%02X",
+					    ctlr->mac_addr[0],
+					    ctlr->mac_addr[1],
+					    ctlr->mac_addr[2],
+					    ctlr->mac_addr[3],
+					    ctlr->mac_addr[4],
+					    ctlr->mac_addr[5]);
+	if (!ctlr->mac_addr_str)
+		return -ENOMEM;
+	hid_info(ctlr->hdev, "controller MAC = %s\n", ctlr->mac_addr_str);
+
+	return 0;
+}
+
 /* Common handler for parsing inputs */
 static int joycon_ctlr_read_handler(struct joycon_ctlr *ctlr, u8 *data,
 							      int size)

@@ -1445,6 +1483,13 @@ static int nintendo_hid_probe(struct hid_device *hdev,
 		goto err_mutex;
 	}
 
+	ret = joycon_read_mac(ctlr);
+	if (ret) {
+		hid_err(hdev, "Failed to retrieve controller MAC; ret=%d\n",
+			ret);
+		goto err_close;
+	}
+
 	mutex_unlock(&ctlr->output_mutex);
 
 	/* Initialize the leds */