wct4xxp, wcte12xp: restrict signaling and line combinations to what actually works

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@9056 a0bf4364-ded3-4de4-8d8a-66a801d63aff

1 files changed, 48 insertions, 4 deletions

diff --git a/drivers/dahdi/wct4xxp/base.c b/drivers/dahdi/wct4xxp/base.c
index e902cde..4415270 100644
--- a/drivers/dahdi/wct4xxp/base.c
+++ b/drivers/dahdi/wct4xxp/base.c
@@ -1827,6 +1827,43 @@ static int t4_shutdown(struct dahdi_span *span)
 	return 0;
 }
 
+static void t4_chan_set_sigcap(struct dahdi_span *span, int x)
+{
+	struct t4_span *wc = container_of(span, struct t4_span, span);
+	struct dahdi_chan *chan = wc->chans[x];
+	chan->sigcap = DAHDI_SIG_CLEAR;
+	/* E&M variant supported depends on span type */
+	if (wc->spantype == TYPE_E1) {
+		/* E1 sigcap setup */
+		if (span->lineconfig & DAHDI_CONFIG_CCS) {
+			/* CCS setup */
+			chan->sigcap |= DAHDI_SIG_MTP2 | DAHDI_SIG_SF |
+				DAHDI_SIG_HARDHDLC;
+			return;
+		}
+		/* clear out sig and sigcap for channel 16 on E1 CAS
+		 * lines, otherwise, set it correctly */
+		if (x == 15) {
+			/* CAS signaling channel setup */
+			wc->chans[15]->sigcap = 0;
+			wc->chans[15]->sig = 0;
+			return;
+		}
+		/* normal CAS setup */
+		chan->sigcap |= DAHDI_SIG_EM_E1 | DAHDI_SIG_FXSLS |
+			DAHDI_SIG_FXSGS | DAHDI_SIG_FXSKS | DAHDI_SIG_SF |
+			DAHDI_SIG_FXOLS | DAHDI_SIG_FXOGS | DAHDI_SIG_FXOKS |
+			DAHDI_SIG_CAS | DAHDI_SIG_DACS_RBS;
+	} else {
+		/* T1 sigcap setup */
+		chan->sigcap |= DAHDI_SIG_EM | DAHDI_SIG_FXSLS |
+			DAHDI_SIG_FXSGS | DAHDI_SIG_FXSKS | DAHDI_SIG_MTP2 |
+			DAHDI_SIG_SF | DAHDI_SIG_FXOLS | DAHDI_SIG_FXOGS |
+			DAHDI_SIG_FXOKS | DAHDI_SIG_CAS | DAHDI_SIG_DACS_RBS |
+			DAHDI_SIG_HARDHDLC;
+	}
+}
+
 static int t4_spanconfig(struct dahdi_span *span, struct dahdi_lineconfig *lc)
 {
 	int i;
@@ -1863,6 +1900,10 @@ static int t4_spanconfig(struct dahdi_span *span, struct dahdi_lineconfig *lc)
 	 * iterations */
 	clear_bit(T4_STOP_DMA, &wc->checkflag);
 	
+	/* make sure that sigcaps gets updated if necessary */
+	for (i = 0; i < span->channels; i++)
+		t4_chan_set_sigcap(span, i);
+
 	/* If we're already running, then go ahead and apply the changes */
 	if (span->flags & DAHDI_FLAG_RUNNING)
 		return t4_startup(span);
@@ -2064,11 +2105,15 @@ static void init_spans(struct t4 *wc)
 		if (ts->spantype == TYPE_T1 || ts->spantype == TYPE_J1) {
 			ts->span.channels = 24;
 			ts->span.deflaw = DAHDI_LAW_MULAW;
-			ts->span.linecompat = DAHDI_CONFIG_AMI | DAHDI_CONFIG_B8ZS | DAHDI_CONFIG_D4 | DAHDI_CONFIG_ESF;
+			ts->span.linecompat = DAHDI_CONFIG_AMI |
+				DAHDI_CONFIG_B8ZS | DAHDI_CONFIG_D4 |
+				DAHDI_CONFIG_ESF;
 		} else {
 			ts->span.channels = 31;
 			ts->span.deflaw = DAHDI_LAW_ALAW;
-			ts->span.linecompat = DAHDI_CONFIG_HDB3 | DAHDI_CONFIG_CCS | DAHDI_CONFIG_CRC4;
+			ts->span.linecompat = DAHDI_CONFIG_AMI |
+				DAHDI_CONFIG_HDB3 | DAHDI_CONFIG_CCS |
+				DAHDI_CONFIG_CRC4;
 		}
 		ts->span.chans = ts->chans;
 		ts->span.flags = DAHDI_FLAG_RBS;
@@ -2088,8 +2133,7 @@ static void init_spans(struct t4 *wc)
 		for (y=0;y<wc->tspans[x]->span.channels;y++) {
 			struct dahdi_chan *mychans = ts->chans[y];
 			sprintf(mychans->name, "TE%d/%d/%d/%d", wc->numspans, wc->num, x + 1, y + 1);
-			mychans->sigcap = DAHDI_SIG_EM | DAHDI_SIG_CLEAR | DAHDI_SIG_FXSLS | DAHDI_SIG_FXSGS | DAHDI_SIG_FXSKS | DAHDI_SIG_HARDHDLC | DAHDI_SIG_MTP2 |
-									 DAHDI_SIG_FXOLS | DAHDI_SIG_FXOGS | DAHDI_SIG_FXOKS | DAHDI_SIG_CAS | DAHDI_SIG_EM_E1 | DAHDI_SIG_DACS_RBS;
+			t4_chan_set_sigcap(&ts->span, x);
 			mychans->pvt = wc;
 			mychans->chanpos = y + 1;
 		}