diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2015-03-12 20:24:17 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2015-03-12 20:24:17 +0000 |
| commit | 96e640797bd4cc0ddd04f8191e8b395b4d3e6f36 (patch) | |
| tree | 491fceee8350b4f9ed9f736d144b26955183690a /sys | |
| parent | f1d4196fd964b653e0bdadd7591fded288a910b7 (diff) | |
If while attaching pckbdc device slots, we find a slot has failed to
attach and it happens to be the AUX port, aha: we are a kernel without
the pms driver. In that case, we should reset that pms back into
'stupid mode'. It seems some BIOS initialize newer-style nubbins/touchpads
into strange (advanced) modes, which can muddle up the pckbc pipe. This
is experienced as 10-second typing pauses and strange repeat behaviour on the
RAMDISK, but was eventually tied to "lightly brushing" the touchpad...
work done at s2k15 with jcs
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/ic/pckbc.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/dev/ic/pckbc.c b/sys/dev/ic/pckbc.c index bbdec9ddb04..471d5fbcbc1 100644 --- a/sys/dev/ic/pckbc.c +++ b/sys/dev/ic/pckbc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pckbc.c,v 1.43 2014/12/19 07:23:57 deraadt Exp $ */ +/* $OpenBSD: pckbc.c,v 1.44 2015/03/12 20:24:16 deraadt Exp $ */ /* $NetBSD: pckbc.c,v 1.5 2000/06/09 04:58:35 soda Exp $ */ /* @@ -41,6 +41,7 @@ #include <dev/ic/i8042reg.h> #include <dev/ic/pckbcvar.h> +#include <dev/pckbc/pmsreg.h> #include "pckbd.h" @@ -277,6 +278,12 @@ pckbc_attach_slot(struct pckbc_softc *sc, pckbc_slot_t slot, int force) if (t->t_slotdata[slot] == NULL) return 0; pckbc_init_slotdata(t->t_slotdata[slot]); + } else if (!found && slot == PCKBC_AUX_SLOT) { + u_char cmd[1] = { PMS_RESET }; + + (void) pckbc_poll_cmd(t, PCKBC_AUX_SLOT, cmd, sizeof cmd, + 0, NULL, 1); + pckbc_slot_enable(t, PCKBC_AUX_SLOT, 0); } return (found); } |