Samsung includes both stock AOSP android.hardware.power service, and their own vendor.samsung.hardware.miscpower. Since the two HALs define the same full-qualified name, hwservicemanager takes whichever comes last. Using proper power HAL is needed for Samsung device to have proper sleep of the touchscreen, and better power handling.
You'll need to call generate.sh in this folder to generate the Makefiles to build the Treble targets
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