[BT][HID] How is a Bluetooth HID connection handled in Ubuntu or android

Question

Hi

I am working on a project that uses the Bluetooth HID profile. I understand that the BlueZ stack in android has the HID support but its not extended to app layer by Android Framework.

My main concern is to understand the driver level flow for a Bluetooth HID device. I would like to add a new HID device driver that can handle the key events from bluetooth HID device and pass it on to the Input subsystem.

Any help would be appriciated!!

thanks