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wct4xxp: Report rx signalling bit changes after spanconfig.

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This fixes a long standing issue where, for CAS signaling, the RX bits were
sometimes misreported after span configuration before the first detected state
change.

The logic in the wct4xxp driver now matches that in the wcte43x driver and
wcte13xp drivers. The wcte12xp driver always polls the sigbits due to how
voicebus works and is not affected by this.

Internal-Issue-ID: DAHDI-1081
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
This commit is contained in:
Shaun Ruffell 2014-06-27 22:33:10 -05:00
parent 71867c3de7
commit 089b593b56
1 changed files with 4 additions and 3 deletions
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7
drivers/dahdi/wct4xxp/base.c
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@ -3296,8 +3296,6 @@ static void t4_check_sigbits(struct t4 *wc, int span)
dev_notice(&wc->dev->dev, "Checking sigbits on span %d\n",
span + 1);
if (!(ts->span.flags & DAHDI_FLAG_RUNNING))
return;
if (E1 == ts->linemode) {
for (i = 0; i < 15; i++) {
a = t4_framer_in(wc, span, 0x71 + i);
@ -3687,6 +3685,7 @@ static inline void t4_framer_interrupt(struct t4 *wc, int span)
struct t4_span *ts = wc->tspans[span];
struct dahdi_chan *sigchan;
unsigned long flags;
bool recheck_sigbits = false;
/* 1st gen cards isn't used interrupts */
@ -3712,6 +3711,8 @@ static inline void t4_framer_interrupt(struct t4 *wc, int span)
ts->span.count.ebit += __t4_framer_in(wc, span, EBCL_T);
ts->span.count.be += __t4_framer_in(wc, span, BECL_T);
ts->span.count.prbs = __t4_framer_in(wc, span, FRS1_T);
if (DAHDI_RXSIG_INITIAL == ts->span.chans[0]->rxhooksig)
recheck_sigbits = true;
}
spin_unlock_irqrestore(&wc->reglock, flags);
@ -3720,7 +3721,7 @@ static inline void t4_framer_interrupt(struct t4 *wc, int span)
ts->span.count.errsec += 1;
}
if (isr0)
if (isr0 & 0x08 || recheck_sigbits)
t4_check_sigbits(wc, span);
if (E1 == ts->linemode) {