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Enable pps support, only if CLOCAL set & MDMBUF clear and no clock present.

This commit is contained in:
wrstuden 1999-03-27 01:17:03 +00:00
parent 82f6a3397b
commit 8a4ca40c65
1 changed files with 10 additions and 1 deletions
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11
sys/arch/mac68k/dev/zs.c
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@ -1,4 +1,4 @@
/* $NetBSD: zs.c,v 1.30 1999/03/23 17:55:03 wrstuden Exp $ */
/* $NetBSD: zs.c,v 1.31 1999/03/27 01:17:03 wrstuden Exp $ */
/*
* Copyright (c) 1996-1998 Bill Studenmund
@ -727,10 +727,19 @@ zs_set_modes(cs, cflag)
*/
if ((cflag & CDTRCTS) && (cflag & (CRTSCTS | MDMBUF)))
return (EINVAL);
cs->cs_rr0_pps = 0;
if (xcs->cs_hwflags & ZS_HWFLAG_NO_DCD) {
if (cflag & MDMBUF)
return (EINVAL);
cflag |= CLOCAL;
} else {
/*
* cs->cs_rr0_pps indicates which bit MAY be used for pps.
* Enable only if nothing else will want the interrupt and
* it's ok to enable interrupts on this line.
*/
if ((cflag & (CLOCAL & MDMBUF)) == CLOCAL)
cs->cs_rr0_pps = ZSRR0_DCD;
}
if ((xcs->cs_hwflags & ZS_HWFLAG_NO_CTS) && (cflag & (CRTSCTS | CDTRCTS)))
return (EINVAL);