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[src/trunk]: src/share/man/man4 Update man page to document z-axis emulation.

branches:  trunk
changeset: 445621:ef40dc1478ed
user:      blymn <>
date:      Tue Nov 06 09:14:08 2018 +0000

Update man page to document z-axis emulation.


 share/man/man4/pms.4 |  32 +++++++++++++++++++++++++++++---
 1 files changed, 29 insertions(+), 3 deletions(-)

diffs (57 lines):

diff -r d8e2a1887dbc -r ef40dc1478ed share/man/man4/pms.4
--- a/share/man/man4/pms.4      Tue Nov 06 09:13:17 2018 +0000
+++ b/share/man/man4/pms.4      Tue Nov 06 09:14:08 2018 +0000
@@ -1,4 +1,4 @@
-.\" $NetBSD: pms.4,v 1.31 2018/02/04 18:17:59 christos Exp $
+.\" $NetBSD: pms.4,v 1.32 2018/11/06 09:14:08 blymn Exp $
 .\" Copyright (c) 1993 Christopher G. Demetriou
 .\" All rights reserved.
@@ -144,12 +144,15 @@
 If set to 2, two-finger events generate a middle button click.
 .It Dv hw.synaptics.scale_x
 .It Dv hw.synaptics.scale_y
+.It Dv hw.synaptics.scale_z
 Scale factor used to divide movement deltas derived from Synaptics
-coordinates (0-6143) to yield more reasonable values (default 16).
+coordinates (0-6143) to yield more reasonable values (default 16 for x
+and y, 1 for z).
 .It Dv hw.synaptics.max_speed_x
 .It Dv hw.synaptics.max_speed_y
+.It Dv hw.synaptics.max_speed_z
 Limits pointer rate of change (after scaling) per reported movement
-event (default 32).
+event (default 32 for x and y, 2 for z).
 .It Dv hw.synaptics.movement_threshold
 Movements of less than this value (in Synaptics coordinates) are
 ignored (default 4).
@@ -175,6 +178,29 @@
 For completeness, the region between the left hand side of the clickpad,
 button2_edge and button_boundary will be reported as a button1 event
 as will any clicks that occur outside the button emulation region.
+.It Dv hw.synaptics.finger_scroll-min
+The minimum finger width at which the driver will start reporting
+vertical movements as Z axis events.
+Effectively, this emulates a mouse scroll wheel by the user using two
+fingers together on the click pad.
+The default value is 5, this value cannot be less than 5 due to the way
+the clickpad reports finger width.
+.It Dv hw.synaptics.finger_scroll-max
+The maximum finger width at which the driver will report finger
+movement as Z axis events.
+The default value is 12 and cannot be greater than 14.
+.It Dv hw.synaptics.finger_scroll-hysteresis
+This defines the number of packets to continue with the Z axis emulation.
+Due to the nature of the clickpad maintaining constant contact can be
+This hysteresis value prevents the driver flipping between two finger
+scroll and normal mouse movement erratically.
+Each time a valid finger scroll width is detected the packet count is
+If this variable is set too high then mouse movements will be interpreted
+as Z-axis events after the two finger scoll has finished.
+If the variable is set too low then there will be mouse movements observed
+during the two finger scroll.
 The following

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