Bluetooth: btmrvl: add public address configuration support

.set_bdaddr handler is implemented for public address configuration.
A reboot restores the bdaddr to its original address.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/btmrvl_drv.h

@@ -91,6 +91,7 @@ struct btmrvl_private {
 
 /* Vendor specific Bluetooth commands */
 #define BT_CMD_PSCAN_WIN_REPORT_ENABLE	0xFC03
+#define BT_CMD_SET_BDADDR		0xFC22
 #define BT_CMD_AUTO_SLEEP_MODE		0xFC23
 #define BT_CMD_HOST_SLEEP_CONFIG	0xFC59
 #define BT_CMD_HOST_SLEEP_ENABLE	0xFC5A

drivers/bluetooth/btmrvl_main.c

@@ -539,6 +539,29 @@ static int btmrvl_setup(struct hci_dev *hdev)
 	return 0;
 }
 
+static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+	struct sk_buff *skb;
+	long ret;
+	u8 buf[8];
+
+	buf[0] = MRVL_VENDOR_PKT;
+	buf[1] = sizeof(bdaddr_t);
+	memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
+
+	skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
+			     HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		ret = PTR_ERR(skb);
+		BT_ERR("%s: changing btmrvl device address failed (%ld)",
+		       hdev->name, ret);
+		return ret;
+	}
+	kfree_skb(skb);
+
+	return 0;
+}
+
 /*
  * This function handles the event generated by firmware, rx data
  * received from firmware, and tx data sent from kernel.
@@ -632,6 +655,7 @@ int btmrvl_register_hdev(struct btmrvl_private *priv)
 	hdev->flush = btmrvl_flush;
 	hdev->send  = btmrvl_send_frame;
 	hdev->setup = btmrvl_setup;
+	hdev->set_bdaddr = btmrvl_set_bdaddr;
 
 	hdev->dev_type = priv->btmrvl_dev.dev_type;