Support for Kionix Accelerometer

[MadhiasM]

Many 2-in-1 devices use accelerometers by Kionix such as KXCJ9. At the moment screen rotation and tablet mode detection does not work yet with my laptop Teclast F6 Pro with these sensors. On other Linux based OS like Ubuntu screen rotation already works starting with Kernel 5.0. Can it be fixed by including the corresponsing drivers? More info is in the links below.

https://patchwork.kernel.org/project/linux-iio/patch/[email protected]/

https://chromium.googlesource.com/chromiumos/platform/ec/+/master/driver/accel_kionix.h