Surface GPE/Lid driver to enable wakeup from suspend via the lid.
Conventionally, wake-up events for a specific device, e.g. the lid device, are managed via the ACPI _PRW field.
While this does not seem strictly necessary based on ACPI spec, since commit 941d3e41da7f86bdb9dcc1977c2bcc6b89bfe47 (ACPI: EC / PM: Disable non-wakeup GPEs for suspend-to-idle) the kernel disables GPE wakeups to avoid non-wakeup interrupts preventing suspend by default and only enables GPEs associated via the _PRW field with a wake-up capable device.
As there is no _PRW field on the lid device of MS Surface devices, we have to enable those GPEs ourselves as a workaround.
Note: You normally do not need to manually install these module if you are already using a kernel from https://github.com/linux-surface/linux-surface.
You can build the module by running make inside the module/ directory.
After that, you can load the module by running insmod surface_gpe.ko and remove it by running rmmod surface_gpe.
If you want to permanently install the module (or ensure it is loaded during boot), you can run make dkms-install.
To uninstall it, run make dkms-uninstall.
In case you've installed a patched kernel already contiaining the in-kernel version of this module, dkms should detect this and override the in-kernel module with the externally built one.
This should get reverted by uninstalling the module via the command above.