Enabling handoff for Bluetooth?

[the-darkvoid]

I am running a laptop with Yosemite installed making use of a BCM94352Z NGFF M.2 combo card.
The BCM94352Z WiFi is Vendor ID: 0x14E4, Product ID: 0x43B1.
The Bluetooth USB is Vendor ID: 0x0930, Product ID: 0x0223

WiFi is working with a simple DSDT patch from Toleda: https://github.com/toleda/wireless_half-mini/blob/master/Patches/arpt3-bcm4352.txt.
This successfully loads AirportBrcm4360.kext, a pre-requisite for Handoff.
Additionally since the card is marked compatible with 0x43a0, whitelisting on Mac board ID should not apply.

Bluetooth is working normally with the Bluetooth Firmware uploader.

However Handoff is not showing enabled in System profile:

Apple Bluetooth Software Version: 4.3.0f10 14890
 Hardware, Features, and Settings:
 Name: -----
 Address: -----
 Bluetooth Low Energy Supported: Yes
 Handoff Supported: No
 Instant Hotspot Supported: No
 Manufacturer: Broadcom
 Transport: USB
 Chipset: 20702A3
 Firmware Version: v14 c5553
 Bluetooth Power: On
 Discoverable: Off
 Connectable: Yes
 Auto Seek Pointing: Off
 Remote wake: On
 Vendor ID: 0x0930
 Product ID: 0x0223
 HCI Version: 0x6
 HCI Revision: 0x15B1
 LMP Version: 0x6
 LMP Subversion: 0x220E
 Device Type (Major): Computer
 Device Type (Complete): Mac Portable
 Composite Class Of Device: 0x38010C
 Device Class (Major): 0x01
 Device Class (Minor): 0x03
 Service Class: 0x1C0
 Auto Seek Keyboard: Off

On an original MacBook Pro it looks like this:

Apple Bluetooth Software Version: 4.3.0f10 14890
 Hardware, Features, and Settings:
 Name: ----
 Address: ----
 Bluetooth Low Energy Supported: Yes
 Handoff Supported: Yes
 Instant Hotspot Supported: Yes
 Manufacturer: Broadcom
 Transport: USB
 Chipset: 20702A3
 Firmware Version: v147 c5799
 Bluetooth Power: On
 Discoverable: Off
 Connectable: Yes
 Auto Seek Pointing: On
 Remote wake: On
 Vendor ID: 0x05AC
 Product ID: 0x821D
 HCI Version: 0x6
 HCI Revision: 0x16A7
 LMP Version: 0x6
 LMP Subversion: 0x2293
 Device Type (Major): Computer
 Device Type (Complete): Mac Portable
 Composite Class Of Device: 0x38010C
 Device Class (Major): 0x01
 Device Class (Minor): 0x03
 Service Class: 0x1C0
 Auto Seek Keyboard: On

Interestingly enough the chipset ID is the same between both devices and both are USB connected.
Maybe since its the same chipset some native Apple Kext can be used instead of bluetooth firmware uploader?

Also there is an interesting discussion on some Russian sites that Bluetooth is not at all relying on Bluetooth 4.0 or Bluetooth Low energy.

There is a check in /System/Library/PrivateFrameworks/Sharing.framework which checks against a variable deviceSupportsAWDL.supportsAWDL which is a boolean value.

Ideally figuring out how this variable is set, and ensuring its set properly should enable hand-off on most if not all computers irregardless of exact hardware specifications.

 

[onmybikedrunk]

This is very interesting and exactly what I was hoping for. This is the start to figuring this out. Have you gotten any further? Unfortunately, while I understand your points, actually doing anything about it myself is above my current knowledge.