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Reduce default tap_min_queue size for Elan touchpads

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Elan hw v.4 touchpads often sends touchpad release packet right after
touchpad touch one. Most probably this happens due to PS/2 limited bandwith.
Reducing of tap_min_queue size to 1 makes multifinger tap detection
more reliable in this case.

Reviewed by:	gonzo
Approved by:	gonzo (mentor)
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D10266
This commit is contained in:
Vladimir Kondratyev 2017-05-04 22:51:22 +00:00
parent 933ef2d3b2
commit 51de77dd3d
1 changed files with 3 additions and 0 deletions
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3
sys/dev/atkbdc/psm.c
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@ -6218,6 +6218,9 @@ elantech_init_synaptics(struct psm_softc *sc)
/* Disable finger detection pressure threshold */
sc->syninfo.min_pressure = 1;
/* Elans often report double & triple taps as single event */
sc->syninfo.tap_min_queue = 1;
/* Use full area of touchpad */
sc->syninfo.margin_top = 0;
sc->syninfo.margin_right = 0;