I have an Amlogic S905 TV box with no Bluetooth, only WiFi. I started porting the external Bluetooth adapter (CSR 4.0) driver to this box.
I found that the box kernel has inbuilt support for Bluetooth. I checked this using dmesg | grep -i bluetooth and it shows Bluetooth core ver 2.18
1|root@p383: # dmesg | grep -i bluetooth
dmesg | grep -i bluetooth
<6>[ 0.977385@0] Bluetooth: Core ver 2.18
<6>[ 0.985193@0] Bluetooth: HCI device and connection manager initialized
<6>[ 0.991742@0] Bluetooth: HCI socket layer initialized
<6>[ 0.996798@0] Bluetooth: L2CAP socket layer initialized
<6>[ 1.002071@0] Bluetooth: SCO socket layer initialized
<6>[ 1.558138@0] Bluetooth: HCI UART driver ver 2.2
<6>[ 1.562707@0] Bluetooth: HCI H4 protocol initialized
<6>[ 2.697881@0] Bluetooth: BlueSleep Mode Driver Ver 1.2
<6>[ 3.928079@0] Bluetooth: RFCOMM TTY layer initialized
<6>[ 3.933201@0] Bluetooth: RFCOMM socket layer initialized
<6>[ 3.938501@0] Bluetooth: RFCOMM ver 1.11
<6>[ 3.942343@0] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
<6>[ 3.947854@0] Bluetooth: BNEP filters: protocol multicast
<6>[ 3.953351@0] Bluetooth: BNEP socket layer initialized
<6>[ 3.958471@0] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
<6>[ 3.964573@0] Bluetooth: HIDP socket layer initialized
but there is no physical hardware present. Also, there is a lack of required files like:
/system/app/bluetooth.apk,/system/lib/hw/bluetooth.default.so,/system/etc/bluetooth
Then I successfully compiled btusb.ko driver in Linux by downloading kernel source code and pasting in /system/lib, and driver btusb.ko is successfully installed now. The dongle detected in dmesg log as
#rfkill list
0: hci0: bluetooth
Soft blocked: no
Hard blocked: no
But I am unable to use it because Bluetooth functionality is not on. I need help with how I paste the required files in the system folder to turn it on.
