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Extended capability probes can confuse the passthrough device,

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reset the touchpad on enable to cure that.
This commit is contained in:
plunky 2010-03-21 19:57:05 +00:00
parent 61f4a4ebdc
commit 4cac2374d5
1 changed files with 17 additions and 3 deletions
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20
sys/dev/pckbport/synaptics.c
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@ -1,4 +1,4 @@
/* $NetBSD: synaptics.c,v 1.22 2010/03/21 19:53:52 plunky Exp $ */
/* $NetBSD: synaptics.c,v 1.23 2010/03/21 19:57:05 plunky Exp $ */
/*
* Copyright (c) 2005, Steve C. Woodford
@ -48,7 +48,7 @@
#include "opt_pms.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: synaptics.c,v 1.22 2010/03/21 19:53:52 plunky Exp $");
__KERNEL_RCSID(0, "$NetBSD: synaptics.c,v 1.23 2010/03/21 19:57:05 plunky Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -241,6 +241,10 @@ pms_synaptics_probe_init(void *vsc)
const char comma[] = ", ";
const char *sep = "";
aprint_normal_dev(psc->sc_dev, "");
if (sc->flags & SYN_FLAG_HAS_PASSTHROUGH) {
aprint_normal("%sPassthrough", sep);
sep = comma;
}
if (sc->flags & SYN_FLAG_HAS_MIDDLE_BUTTON) {
aprint_normal("%sMiddle button", sep);
sep = comma;
@ -276,9 +280,19 @@ pms_synaptics_enable(void *vsc)
{
struct pms_softc *psc = vsc;
struct synaptics_softc *sc = &psc->u.synaptics;
u_char cmd[2];
u_char cmd[2], resp[2];
int res;
if (sc->flags & SYN_FLAG_HAS_PASSTHROUGH) {
/*
* Extended capability probes can confuse the passthrough device;
* reset the touchpad now to cure that.
*/
cmd[0] = PMS_RESET;
res = pckbport_poll_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd,
1, 2, resp, 1);
}
/*
* Enable Absolute mode with W (width) reporting, and set
* the packet rate to maximum (80 packets per second).