BigSurface

The name comes from macOS Big Sur. Big Sur + Surface -> Big Surface (LOL)

PS : If you have a better name, please let me know.

A proposition for a fully intergrated kext for all Surface related hardwares

How to install

You will need to first DELETE all the original VoodooI2C kexts including its plugins (all of them), SMCBatteryManager.kext, SMCLightSensor.kext and SSDT_ALS0.aml, then add BigSurface and SSDT-SURFACE.aml into opencore's config.plist in the order specified as below

Which Surface series are supported ?

Check your UART device id in Windows, currently device id 34a8 is supported perfectly, 9d27 still needs some ameliorations but usable

• Surface Pro 7 & Laptop 3 & Book 3 -> 34a8
• Surface Pro 4, 5, 6 & Book 2 & Laptop 1, 2 -> 9d27

See my sub-repo VoodooSerial for details

What works

• Surface Type Cover

  The code is based on VoodooI2CHID.kext, but added integrated and hot pluggable touchpad&keyboard support.

• Buttons

  Power/VolumeUp/VolumeDown buttons all works properly

• Ambient Light Sensor

  ACPI device name: ACSD, attached under I2C4. ONLY SP7 and SL3 devices use this hardware for other devices, you need to write your own driver and then make a pull request. I am happy to merge your driver in :)

• Battery status--Surface Serial Hub

  UART driver as well as MS's SAM module driver are implemented. TODO: support dual batteries for SB3.

• Performance mode

  Right now it is set by PerformanceMode in SurfaceBattery (default 0x01), changing it to other values is not observed to have any effects. If you find any difference (fan speed or battery life), please let me know

  Right now it can only be set by changing the plist or using ioio We need a userspace software to control it if it actually has something useful.

• Surface Laptop3's keyboard & touchpad

  Works now, all keys and gestures are recognised properly.

  Known issue: neither keyboard nor touchpad can wake up the system.

• Touch Screen & Stylus Yes, this also works :)

  The code is ported from linux, including mei and surface-linux's ipts & iptsd drivers.

  10 finger touch & stylus

  Important: need a SSDT patch (SSDT-SURFACE) and a user-space daemon (IPTSDaemon) to work with.

Possible values for Performance mode are:

  State              Value

Recommended          0x01

Battery Saver        0x02 (Only in battery mode)

Better Performance   0x03

Best Performance     0x04

TODO

• Cameras Impossible so far

  ACPI devices: CAMR,CAMF,CAM3(infrared camera)

  Corresponding device id: OV8865,OV5693,OV7251

  Even Linux failed to drive the cameras on SP7 (IPU4), SP6 and before (IPU3) might be possible but I do not have the device.

Important

Surface Pro 7 seems to have issues for macOS to recognize properly the battery in System Preference. PM Profile in FACP is tablet not laptop.

Thus, a SSDT patch is needed.

ACPI table: FACP

Find: 00080900 B2000000 F0F1

Replace: 00020900 B2000000 F0F1

Thanks to @he1833

If you like my project, please consider to star this project, thanks!

If you appreciate my effort and would like to pay me a coffee, here is my PayPal address: ritchiexia@163.com