From: David Herrmann Date: Mon, 28 Oct 2013 16:49:20 +0000 (+0100) Subject: HID: wiimote: add pro-controller analog stick calibration X-Git-Tag: v3.13-rc1~63^2^7 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08072dde333c2f09114a01b0bd32be52ecce195b;p=pandora-kernel.git HID: wiimote: add pro-controller analog stick calibration The analog sticks of the pro-controller might report slightly off values. To guarantee a uniform setup, we now calibrate analog-stick values during pro-controller setup. Unfortunately, the pro-controller fails during normal EEPROM reads and I couldn't figure out whether there are any calibration values stored on the device. Therefore, we now use the first values reported by the device (iff they are not _way_ off, which would indicate movement) to initialize the calibration values. To allow users to change this calibration data, we provide a pro_calib sysfs attribute. We also change the "flat" values so user-space correctly smoothes our data. It makes slightly off zero-positions less visible while still guaranteeing highly precise movement reports. Note that the pro controller reports zero-positions in a quite huge range (at least: -100 to +100). Reported-by: Rafael Brune Tested-by: Rafael Brune Signed-off-by: David Herrmann Signed-off-by: Jiri Kosina --- Reading git-diff-tree failed