[svn-commits] sruffell: linux/trunk r9391 - /linux/trunk/drivers/dahdi/wctdm24xxp/base.c

[SVN commits to the Digium repositories]

Author: sruffell
Date: Tue Sep 21 10:36:34 2010
New Revision: 9391

URL: http://svnview.digium.com/svn/dahdi?view=rev&rev=9391
Log:
wctdm24xxp: Add optional FXO digital loopback if DEBUG is defined.

This module parameter will allow patgen/pattest to be used only on FXO
ports. *ALL* FXO ports will be placed in digital loopback mode when
set.

The current intent is for this to be removed as an optional module
parameter when there is a channel by channel representation in sysfs.
Otherwise, a new IOCTL would have to be defined and a tool written in
order to support this. DAHDI-696.

Signed-off-by: Shaun Ruffell <sruffell at digium.com>

Modified:
    linux/trunk/drivers/dahdi/wctdm24xxp/base.c

Modified: linux/trunk/drivers/dahdi/wctdm24xxp/base.c
URL: http://svnview.digium.com/svn/dahdi/linux/trunk/drivers/dahdi/wctdm24xxp/base.c?view=diff&rev=9391&r1=9390&r2=9391
==============================================================================
--- linux/trunk/drivers/dahdi/wctdm24xxp/base.c (original)
+++ linux/trunk/drivers/dahdi/wctdm24xxp/base.c Tue Sep 21 10:36:34 2010
@@ -218,6 +218,7 @@
 static int debug = 0;
 #ifdef DEBUG
 static int robust = 0;
+static int digitalloopback;
 #endif
 static int lowpower = 0;
 static int boostringer = 0;
@@ -2707,6 +2708,15 @@
 	/* Take values for fxotxgain and fxorxgain and apply them to module */
 	wctdm_set_hwgain(wc, card, fxotxgain, 1);
 	wctdm_set_hwgain(wc, card, fxorxgain, 0);
+
+#ifdef DEBUG
+	if (digitalloopback) {
+		dev_info(&wc->vb.pdev->dev,
+			 "Turning on digital loopback for port %d.\n",
+			 card + 1);
+		wctdm_setreg(wc, card, 10, 0x01);
+	}
+#endif
 
 	if (debug)
 		dev_info(&wc->vb.pdev->dev, "DEBUG fxotxgain:%i.%i fxorxgain:%i.%i\n", (wctdm_getreg(wc, card, 38)/16) ? -(wctdm_getreg(wc, card, 38) - 16) : wctdm_getreg(wc, card, 38), (wctdm_getreg(wc, card, 40)/16) ? -(wctdm_getreg(wc, card, 40) - 16) : wctdm_getreg(wc, card, 40), (wctdm_getreg(wc, card, 39)/16) ? -(wctdm_getreg(wc, card, 39) - 16): wctdm_getreg(wc, card, 39), (wctdm_getreg(wc, card, 41)/16)?-(wctdm_getreg(wc, card, 41) - 16) : wctdm_getreg(wc, card, 41));
@@ -3890,9 +3900,13 @@
 				 y, s->chans[y]);
 		}
 		if (wc->modtype[x] == MOD_TYPE_FXO) {
+			int val;
 			s->chans[y++]->sigcap = DAHDI_SIG_FXSKS | DAHDI_SIG_FXSLS | DAHDI_SIG_SF | DAHDI_SIG_CLEAR;
-			wctdm_setreg(wc, x, 33,
-				     (should_set_alaw(wc) ? 0x20 : 0x28));
+			val = should_set_alaw(wc) ? 0x20 : 0x28;
+#ifdef DEBUG
+			val = (digitalloopback) ? 0x30 : val;
+#endif
+			wctdm_setreg(wc, x, 33, val);
 		} else if (wc->modtype[x] == MOD_TYPE_FXS) {
 			s->chans[y++]->sigcap = DAHDI_SIG_FXOKS | DAHDI_SIG_FXOLS | DAHDI_SIG_FXOGS | DAHDI_SIG_SF | DAHDI_SIG_EM | DAHDI_SIG_CLEAR;
 			wctdm_setreg(wc, x, 1,
@@ -5316,6 +5330,9 @@
 module_param(reversepolarity, int, 0600);
 #ifdef DEBUG
 module_param(robust, int, 0600);
+module_param(digitalloopback, int, 0400);
+MODULE_PARM_DESC(digitalloopback, "Set to 1 to place FXO modules into " \
+		 "loopback mode for troubleshooting.");
 #endif
 module_param(opermode, charp, 0600);
 module_param(lowpower, int, 0600);