From 1f48e488a3f0f7fe606e847ceb353812f8e503ad Mon Sep 17 00:00:00 2001
From: markster <markster@5390a7c7-147a-4af0-8ec9-7488f05a26cb>
Date: Sat, 23 Feb 2002 19:15:44 +0000
Subject: Version 0.1.6 from FTP

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@61 5390a7c7-147a-4af0-8ec9-7488f05a26cb
---
 wcfxo.c | 44 +++++++++++++++++++++++++++++++-------------
 1 file changed, 31 insertions(+), 13 deletions(-)

(limited to 'wcfxo.c')

diff --git a/wcfxo.c b/wcfxo.c
index f000b31..b878467 100755
--- a/wcfxo.c
+++ b/wcfxo.c
@@ -37,6 +37,10 @@
 #include <linux/zaptel.h>
 #endif
 
+/* RING detection fiddling */
+#define RING_INC	10
+#define RING_MAX	50
+
 #define WC_MAX_IFACES 128
 
 #define WC_CNTL    	0x00
@@ -92,6 +96,7 @@ struct wcfxo {
 	int rreadpos;
 	int ringdebounce;
 	int battdebounce;
+	int nobatttimer;
 	int allread;
 	int regoffset;			/* How far off our registers are from what we expect */
 	int alt;
@@ -99,7 +104,6 @@ struct wcfxo {
 	int reset;
 	/* Up to 6 register can be written at a time */
 	struct reg regs[ZT_CHUNKSIZE];
-	struct reg midregs[ZT_CHUNKSIZE];
 	struct reg oldregs[ZT_CHUNKSIZE];
 	/* Up to 32 registers of whatever we most recently read */
 	unsigned char readregs[32];
@@ -193,6 +197,12 @@ static inline void wcfxo_transmitprep(struct wcfxo *wc, unsigned char ints)
 		wc->readpos = 0;
 	wc->wregcount = 0;
 
+	for (x=0;x<ZT_CHUNKSIZE;x++) {
+		/* Rotate through registers */
+		wc->oldregs[x] = wc->regs[x];
+		wc->regs[x].flags = FLAG_EMPTY;
+	}
+
 }
 
 static inline void wcfxo_receiveprep(struct wcfxo *wc, unsigned char ints)
@@ -229,12 +239,6 @@ static inline void wcfxo_receiveprep(struct wcfxo *wc, unsigned char ints)
 		}
 		wc->chan.readchunk[x] = ZT_LIN2MU(((short)(readchunk[(x << 1) + (1 - wc->alt)] >> 16)));
 	}
-	for (x=0;x<ZT_CHUNKSIZE;x++) {
-		/* Rotate through registers */
-		wc->oldregs[x] = wc->midregs[x];
-		wc->midregs[x] = wc->regs[x];
-		wc->regs[x].flags = FLAG_EMPTY;
-	}
 	if (wc->ignoreread)
 		wc->ignoreread--;
 	zt_receive(&wc->span);
@@ -258,8 +262,8 @@ static void wcfxo_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 		return;
 
 	if (ints & 0x0f) {
-		wcfxo_transmitprep(wc, ints);
 		wcfxo_receiveprep(wc, ints);
+		wcfxo_transmitprep(wc, ints);
 	}
 	
 	if (ints & 0x10) {
@@ -301,11 +305,11 @@ static void wcfxo_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 			}
 		} else {
 			/* Ring detected...  Increment our counter by a bunch */
-			wc->ringdebounce += 5;
-			/* Max out at 200.  */
-			if (wc->ringdebounce > 200) 
-				wc->ringdebounce = 200;
-			if (!wc->ring && (wc->ringdebounce >= 200)) {
+			wc->ringdebounce += RING_INC;
+			/* Max out at RING_MAX.  */
+			if (wc->ringdebounce > RING_MAX) 
+				wc->ringdebounce = RING_MAX;
+			if (!wc->ring && (wc->ringdebounce >= RING_MAX)) {
 				/* Trigger the ring */
 #ifndef DEBUG_RING
 				if (debug)
@@ -319,6 +323,7 @@ static void wcfxo_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 		/* Check for BATTERY from register and debounce for 8 ms */
 		b = wc->readregs[0xc] & 0xf;
 		if (!b) {
+			wc->nobatttimer++;
 #if 0
 			if (wc->battery)
 				printk("Battery loss: %d (%d debounce)\n", b, wc->battdebounce);
@@ -331,13 +336,23 @@ static void wcfxo_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 				wc->battdebounce = BATT_DEBOUNCE;
 			} else if (!wc->battery)
 				wc->battdebounce = BATT_DEBOUNCE;
+			if ((wc->nobatttimer > 1000) &&
+			    (!wc->span.alarms)) {
+				wc->span.alarms = ZT_ALARM_RED;
+				zt_alarm_notify(&wc->span);
+			}
 		} else if (b == 0xf) {
 			if (!wc->battery && !wc->battdebounce) {
 				if (debug)
 					printk("BATTERY!\n");
 				zt_hooksig(&wc->chan, ZT_RXSIG_OFFHOOK);
 				wc->battery = 1;
+				wc->nobatttimer = 0;
 				wc->battdebounce = BATT_DEBOUNCE;
+				if (wc->span.alarms) {
+					wc->span.alarms = 0;
+					zt_alarm_notify(&wc->span);
+				}
 			} else if (wc->battery)
 				wc->battdebounce = BATT_DEBOUNCE;
 		} else {
@@ -752,6 +767,9 @@ MODULE_PARM(debug, "i");
 MODULE_PARM(monitor, "i");
 MODULE_DESCRIPTION("Wildcard X100P Zaptel Driver");
 MODULE_AUTHOR("Mark Spencer <markster@linux-support.net>");
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("GPL");
+#endif
 
 module_init(wcfxo_init);
 module_exit(wcfxo_cleanup);
-- 
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