The kernel already exposes accelerometer, gyroscope and magenotmeter readings 
via sysfs if properly configured.
For screen orientation I think we can manage with only reading the accel bits 
as seen here (there's a link to a test app there)
https://blueprints.launchpad.net/ubuntu/+spec/desktop-r-arm-input-sensor-drivers

Android seems to only be using polling and raw accel readings from the
kernel and not offloading the task to the MPU6050 firmware.

** Changed in: linux-nexus7 (Ubuntu)
       Status: Triaged => Invalid

** Changed in: ubuntu-nexus7
       Status: Triaged => Invalid

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https://bugs.launchpad.net/bugs/1092952

Title:
  Kernel needs to communicate rotation events up.

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