I've been working on reverse engineering these sensors and have a semi
functional prototype at https://github.com/mincrmatt12/elan-spi-
fingerprint and the mincrmatt12/elan-spi branch of
https://github.com/mincrmatt12/libfprint.
The relevant libfprint issue is #136:
https://gitlab.freedesktop.org/
This is being tracked upstream in libfprint at
https://gitlab.freedesktop.org/libfprint/libfprint/-/issues/339. You can
try the prototype driver at https://github.com/mincrmatt12/elan-spi-
fingerprint.
** Bug watch added: gitlab.freedesktop.org/libfprint/libfprint/-/issues #339
https://gitlab.f