===================================================================
ChangeSet@xxxx, 2004-08-10 00:53:53-05:00, dtor_core@xxxxxxxxxxxxx
Add evdev protocol documentation.
doc.gpm.in | 38 ++++++++++++++++++++++++++++++++++++++
1 files changed, 38 insertions(+)
===================================================================
diff -Nru a/doc/doc.gpm.in b/doc/doc.gpm.in
--- a/doc/doc.gpm.in 2004-08-10 01:18:01 -05:00
+++ b/doc/doc.gpm.in 2004-08-10 01:18:01 -05:00
@@ -810,6 +810,44 @@
@item wp wizardpad
Genius WizardPad tablet
+@item evdev
+ A decoder for Linux event protocol, the preferred method for getting data
+ from input devices in Linux kernels starting with v.2.6. Evdev decoder
+ supports the following modes of operation: relative, absolute, touchpad,
+ synaptics. @t{relative} suits for devices reporting relative motion packets,
+ like regular PS/2 mouses. The decoder expects to receive REL_X, REL_Y,
+ REL_WHEEL, REL_HWHEEL and various BTN_* events from the kernel.
+ @t{absolute} suits for touchscreens and tablets reporting absolute coordinates.
+ The decoder expects ABS_X, ABS_Y and various BTN_* events from the kernel.
+ @t{touchpad} is a device reporting absolute coodrinates, but cursor should not move
+ if there is no touch. Also if you take your finger off and then touch the pad
+ in some other place cursor should not jump across the screen as in the case with
+ touchscreen or tablet. Supports tapping, distinguishes corner and normal taps.
+ Normal taps generate left button events, right-top corner tap generates middle
+ button event, right-bottom corner tap generates right button event. The decoder
+ expects ABS_X, ABS_Y, various BTN_* and ABS_PRESSURE events from the kernel.
+ @t{synaptics} - same as touchpad but recognizes multi-finger tapping. Two-finger
+ taps generate middle button events, three-finger taps generate right button events.
+ The decoder expects ABS_X, ABS_Y, various BTN_*, ABS_TOOL_* and ABS_PRESSURE
+ events from the kernel.
+ By default evdev protocol driver queries device and its capabilities and
+ automatically selects proper mode of operation and sets proper dimensions.
+
+ Options (via -o text):@*
+ @t{type=xxx} - relative, absolute, touchpad, synaptics, auto.@*
+ @t{left=lll, right=rrr, top=ttt, bottom=bbb} - allow to specify size of an
+ absolute device or define edges for touchpads and synaptics (to distinguish
+ corner taps). Not valid for relative devices, automatically retrieved for
+ absolute devices. Default values 1900, 5400, 1800 and 3900.@*
+ @t{touch_high=hhh, touch_low=lll} - minimum pressure to start (touch_high)
+ and continue (touch_low) tracking finger motion on the touch pad.
+ Not valid for relative or absolute devices. Default valies are 30 and 25.@*
+ @t{tap_time=ttt, tap_move=mmm} - maximum time and movement between finger
+ starting touching the pad and leaving it for a touch to be considered a tap.
+ Not valid for relative or absolute devices. Default valies are 180 and 220.@*
+ @t{y_inverted} - allows to adjust to devices whose Y axis is inverted.
+ Turned on by default for synaptics, off for everything else.@*
+
@end table
@ignore
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