21b58655f3
The Lenovo ThinkPad Yoga 11e 360 degree hinges style 2-in-1s use 2 accelerometers, 1 in the display and 1 in the base. Kernel work is under way to also export the second accelerometer in the base as an iio-device; and userspace work is underway to use both accelerometers on 360 degree hinges style 2-in-1s (with 2 accels) to figure out the angle between the 2 halves. So far most orientation-matrix quirks have not cared much about the Z-axis being correct, but in these 2 accelerometer setups getting the Z-axis correct is important too.
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