From a25294f1d516ca2f599bd31edbddb349e3387237 Mon Sep 17 00:00:00 2001
From: kpfleming <kpfleming@5390a7c7-147a-4af0-8ec9-7488f05a26cb>
Date: Fri, 8 Sep 2006 16:02:43 +0000
Subject: fix problem with VPM450M/VPMOCT when T1 and E1 are both used on the
 card make hardware DTMF detection default based on whether the module is a
 VPM400M or a VPM450M/VPMOCT

git-svn-id: http://svn.digium.com/svn/zaptel/branches/1.2@1436 5390a7c7-147a-4af0-8ec9-7488f05a26cb
---
 wct4xxp/base.c    | 15 ++++++++++++---
 wct4xxp/vpm450m.c |  5 ++++-
 2 files changed, 16 insertions(+), 4 deletions(-)

(limited to 'wct4xxp')

diff --git a/wct4xxp/base.c b/wct4xxp/base.c
index 8594611..66a7265 100644
--- a/wct4xxp/base.c
+++ b/wct4xxp/base.c
@@ -184,7 +184,8 @@ static int loopback = 0;
 static int alarmdebounce = 0;
 #ifdef VPM_SUPPORT
 static int vpmsupport = 1;
-static int vpmdtmfsupport = 0;
+/* If set to auto, vpmdtmfsupport is enabled for VPM400M and disabled for VPM450M */
+static int vpmdtmfsupport = -1; /* -1=auto, 0=disabled, 1=enabled*/
 static int vpmspans = 4;
 #define VPM_DEFAULT_DTMFTHRESHOLD 1000
 static int dtmfthreshold = VPM_DEFAULT_DTMFTHRESHOLD;
@@ -1039,7 +1040,7 @@ static int t4_ioctl(struct zt_chan *chan, unsigned int cmd, unsigned long data)
 			return -EFAULT;
 		if (!wc->vpm)
 			return -ENOSYS;
-		if (j && !vpmdtmfsupport)
+		if (j && (vpmdtmfsupport == 0))
 			return -ENOSYS;
 		if (j & ZT_TONEDETECT_ON)
 			ts->dtmfmask |= (1 << (chan->chanpos - 1));
@@ -2576,7 +2577,7 @@ static void t4_interrupt_gen2(int irq, void *dev_id, struct pt_regs *regs)
 	}
 	spin_unlock_irqrestore(&wc->reglock, flags);
 	
-	if (needcheckvpm450 && vpmdtmfsupport) {
+	if (needcheckvpm450 && (vpmdtmfsupport == 1)) {
 		t4_check_vpm450(wc);
 		needcheckvpm450 = 0;
 	}
@@ -2725,6 +2726,10 @@ static void t4_vpm450_init(struct t4 *wc)
 #ifdef HOTPLUG_FIRMWARE
 	release_firmware(firmware);
 #endif
+	if (vpmdtmfsupport<0){
+		printk("VPM450: hardware DTMF disabled.\n");
+		vpmdtmfsupport = 0;
+	}
 	wc->vpm = T4_VPM_PRESENT;
 	printk("VPM450: Present and operational servicing %d span(s)\n", wc->numspans);
 }
@@ -2861,6 +2866,10 @@ static void t4_vpm400_init(struct t4 *wc)
 			t4_vpm_out(wc, x, i, (x < 4) ? 0x55 : 0xAA);
 
 	} 
+	if (vpmdtmfsupport<0){
+		printk("VPM400: hardware DTMF enabled.\n");
+		vpmdtmfsupport = 1;
+	}
 	printk("VPM400%s: Present and operational servicing %d span(s)\n", (gen2vpm ? "(2nd Gen)" : ""), wc->numspans);
 	wc->vpm = T4_VPM_PRESENT;
 }
diff --git a/wct4xxp/vpm450m.c b/wct4xxp/vpm450m.c
index d423c12..5e52b79 100644
--- a/wct4xxp/vpm450m.c
+++ b/wct4xxp/vpm450m.c
@@ -442,7 +442,10 @@ struct vpm450m *init_vpm450m(void *wc, int *isalaw)
 		return NULL;
 	}
 	for (x=0;x<128;x++) {
-		if (isalaw[x >> 5])
+		/* span timeslots are interleaved 12341234... 
+		 * therefore, the lower 2 bits tell us which span this timeslot/channel
+		 */
+		if (isalaw[x & 0x03]) 
 			law = cOCT6100_PCM_A_LAW;
 		else
 			law = cOCT6100_PCM_U_LAW;
-- 
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