Here is the output of inxi -Eazy :
Bluetooth:
Device-1: Qualcomm Atheros driver: btusb v: 0.8 type: USB rev: 1.1
speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-5:6 chip-ID: 0cf3:e005
class-ID: e001
Report: rfkill ID: hci0 rfk-id: 1 state: down bt-service: enabled,running
rfk-block: hardware: no software: yes address: see --recommends
So it seems to be btusb. Sorry for the confusion…