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由 David Herrmann 提交于
Balance-Boards provide 3 16bit calibration values for each of the 4 sensors. We provide these now as 192bit value via a new "bboard_calib" sysfs attribute. We also re-read the calibration data from the device whenever user-space attempts to read this file. On normal Nintendo boards, this always produces the same results, however, on some 3rd party devices these values change until the device is fully initialized. As I have currently no idea how long to wait until it's ready (sometimes takes up to 10s?) we provide a simple workaround for users by reading this file. If we, at some point, figure out how it works, we can implement it in the kernel and provide offline data via "bboard_calib". This won't break user-space then. Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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