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
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
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
- 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
PerformanceModeinSurfaceBattery(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 knowRight now it can only be set by changing the plist or using
ioioWe 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
meiand surface-linux'sipts&iptsddrivers.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
- 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.
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