Probable Linux driver
(see also passys)
For a list of all currently documented CSR chipsets with specifications, see CSR.
Wireless LAN / Bluetooth Combination Module
On board are CSR CSR6030 A11 AU (Wi-Fi) + CSR8311 A08 AU (Bluetooth)
It is using two OUIs: for STA interface E0:75:0A; for AP interface E2:75:0A