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Add support for run-time calibration.

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Some devices require run-time axis calibration. We can't change the min/max
ranges once we've initialised the valuator structs though, so in-driver
run-time calibration is required.

If the property is set, the driver scales from the calibrated range to the
values reported to the X server (which then may scale to screen coordinates).
If the property is not set (i.e. zero items) no scaling is performed.
This commit is contained in:
Peter Hutterer
2008-10-30 16:55:29 +10:30
parent d5cf24d3f0
commit 33eb36f266
4 changed files with 66 additions and 0 deletions
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4
include/evdev-properties.h
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@@ -58,4 +58,8 @@
/* CARD8 */
#define EVDEV_PROP_REOPEN "Evdev Reopen Attempts"
/* Run-time calibration */
/* CARD32, 4 values [minx, maxx, miny, maxy], or no values for unset */
#define EVDEV_PROP_CALIBRATION "Evdev Axis Calibration"
#endif