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authorPeter Hutterer <peter.hutterer@redhat.com>2008-10-30 16:55:29 +1030
committerPeter Hutterer <peter.hutterer@redhat.com>2008-10-30 16:55:29 +1030
commit33eb36f26663c09c873acede1b35e91ef4c64479 (patch)
tree84532529b28c3a3bffc3c3528040145e43653c6d /man
parentAdd test/ directory for uinput-based test devices. (diff)
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Add support for run-time calibration.
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.
Diffstat (limited to 'man')
-rw-r--r--man/evdev.man5
1 files changed, 5 insertions, 0 deletions
diff --git a/man/evdev.man b/man/evdev.man
index 9d336fc..fc8a96a 100644
--- a/man/evdev.man
+++ b/man/evdev.man
@@ -186,6 +186,11 @@ value.
.TP 7
.BI "Evdev Axis Inversion"
2 boolean values (8 bit, 0 or 1), order X, Y. 1 inverts the axis.
+.BI "Evdev Axis Calibration"
+4 32-bit values, order min-x, max-x, min-y, max-y or 0 values to disable
+run-time axis calibration. This feature is required for devices that need to
+scale to a different coordinate system than originally reported to the X
+server, such as touchscreens that require run-time calibration.
.SH AUTHORS
Kristian Høgsberg.