* Needed for AIDL HDMI-CEC HAL to work. Some functions that were in the
HIDL HDMI-CEC HAL have been moved to separate HDMI connection HAL in the
AIDL versions. Only returns connection status of HDMI ports on Pi.
onHotplugEvent is not implemented.
* Use hardware/interfaces/tv/hdmi/connection/aidl/ as reference.
* Use vendor property to allow labeling it for SELinux.
* Remove unneeded properties to set version and vendor id. Using the
default values in any case.
* Start the service later at 'class hal' to avoid making this into bootstrap
APEX. 'class early_hal' is started on trigger 'on late-fs' which is too
early for vendor APEX.
* Pi 5 has independent cards for DSI-0, DSI-1, DPI, and VEC.
In theory we could have two DSI displays so add two more entries.
avc: denied { ioctl } for path="/dev/dri/card2" dev="tmpfs" ino=749 ioctlcmd=0x64bc scontext=u:r:hal_graphics_composer_default:s0 tcontext=u:object_r:device:s0 tclass=chr_file permissive=1
* Use device as an identifier in package names so APEXs on rpi4/rpi5 trees
can co-exist. Somehow apex definitions escape the soong namespace. It
doesn't complain about duplicate package names but dependecies later in
the build after analyzing Android.bp files and generating ninja file.
FAILED: ninja: ... multiple rules generate com.android.hardware.bluetooth.rpi-deps-info [-w dupbuild=err]
https://android.googlesource.com/platform/build/soong/+/refs/heads/main/README.md#namespaces
* Not sure if this is an AOSP bug or intended behaviour for apex targets.
Don't like using the rpi4/rpi5 tags but couldn't come up with better
solution to limit the visibility that worked.
* General cleanups. As APEX package contains all dependencies that are
needed for the service, remove unused shared libraries.
Run 'bpfmt -s -w Android.bp'.
* Old rpi_backlight driver is no longer used on recent kernel versions.
Regulator driver is used for backlight instead.
* Change the backlight path and implement scaling to support the official
Raspberry Pi 7" DSI Touch Display & Touch Display 2.
* The original Touch Display has max brightness of 255 while the new Touch
Display 2 has 31.
