Bluetooth: btrtl: Enable central-peripheral role

Enable the central-peripheral role on RTL8822CE. This enables creating
connections while there is an existing connection in the slave role.

This change can be confirmed in userspace via `bluetoothctl show` which
will now show "Roles: central-peripheral".

Reviewed-by: Daniel Winkler <danielwinkler@google.com>
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
index 94df4e9..1abf6a4 100644 (file)
--- a/drivers/bluetooth/btrtl.c
+++ b/drivers/bluetooth/btrtl.c
@@ -714,13 +714,24 @@ int btrtl_setup_realtek(struct hci_dev *hdev)
 
        ret = btrtl_download_firmware(hdev, btrtl_dev);
 
-       btrtl_free(btrtl_dev);
-
        /* Enable controller to do both LE scan and BR/EDR inquiry
         * simultaneously.
         */
        set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
 
+       /* Enable central-peripheral role (able to create new connections with
+        * an existing connection in slave role).
+        */
+       switch (btrtl_dev->ic_info->lmp_subver) {
+       case RTL_ROM_LMP_8822B:
+               set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
+               break;
+       default:
+               rtl_dev_dbg(hdev, "Central-peripheral role not enabled.");
+               break;
+       }
+
+       btrtl_free(btrtl_dev);
        return ret;
 }
 EXPORT_SYMBOL_GPL(btrtl_setup_realtek);