[dahdi-commits] tzafrir: linux/trunk r10019 - /linux/trunk/drivers/dahdi/xpp/

[SVN commits to the DAHDI project]

Author: tzafrir
Date: Mon Jul  4 09:04:33 2011
New Revision: 10019

URL: http://svnview.digium.com/svn/dahdi?view=rev&rev=10019
Log:
xpp: add FXO HWEC quirks handling

In some cases the hardware echo canceller cannot be used. Mostly related to
an FXO module.
* FXO module if the first module is BRI or PRI
* FXS module if the Astribank has another FXO, no PRI/BRI, and is a sync
  slave.

Signed-off-by: Oron Peled <oron.peled at xorcom.com>
Acked-By: Tzafrir Cohen <tzafrir.cohen at xorcom.com>

Modified:
    linux/trunk/drivers/dahdi/xpp/xbus-core.c
    linux/trunk/drivers/dahdi/xpp/xbus-core.h
    linux/trunk/drivers/dahdi/xpp/xpp_dahdi.c

Modified: linux/trunk/drivers/dahdi/xpp/xbus-core.c
URL: http://svnview.digium.com/svn/dahdi/linux/trunk/drivers/dahdi/xpp/xbus-core.c?view=diff&rev=10019&r1=10018&r2=10019
==============================================================================
--- linux/trunk/drivers/dahdi/xpp/xbus-core.c (original)
+++ linux/trunk/drivers/dahdi/xpp/xbus-core.c Mon Jul  4 09:04:33 2011
@@ -664,6 +664,10 @@
 			subunits,
 			port_dir
 		);
+	if (type == XPD_TYPE_PRI || type == XPD_TYPE_BRI)
+		xbus->quirks.has_digital_span = 1;
+	if (type == XPD_TYPE_FXO)
+		xbus->quirks.has_fxo = 1;
 	xbus->worker.num_units += subunits - 1;
 	for(i = 0; i < subunits; i++) {
 		int	subunit_ports = proto_table->ports_per_subunit;

Modified: linux/trunk/drivers/dahdi/xpp/xbus-core.h
URL: http://svnview.digium.com/svn/dahdi/linux/trunk/drivers/dahdi/xpp/xbus-core.h?view=diff&rev=10019&r1=10018&r2=10019
==============================================================================
--- linux/trunk/drivers/dahdi/xpp/xbus-core.h (original)
+++ linux/trunk/drivers/dahdi/xpp/xbus-core.h Mon Jul  4 09:04:33 2011
@@ -207,6 +207,10 @@
 	int			cpu_rcv_intr[NR_CPUS];
 	int			cpu_rcv_tasklet[NR_CPUS];
 
+	struct quirks {
+		int	has_fxo:1;
+		int	has_digital_span:1;
+	}			quirks;
 	bool			self_ticking;
 	enum sync_mode		sync_mode;
 	/* Managed by low-level drivers: */

Modified: linux/trunk/drivers/dahdi/xpp/xpp_dahdi.c
URL: http://svnview.digium.com/svn/dahdi/linux/trunk/drivers/dahdi/xpp/xpp_dahdi.c?view=diff&rev=10019&r1=10018&r2=10019
==============================================================================
--- linux/trunk/drivers/dahdi/xpp/xpp_dahdi.c (original)
+++ linux/trunk/drivers/dahdi/xpp/xpp_dahdi.c Mon Jul  4 09:04:33 2011
@@ -940,6 +940,26 @@
 	LINE_DBG(GENERAL, xpd, pos, "%s:\n", __func__);
 	if (!ECHOOPS(xbus))
 		return NULL;
+	/*
+	 * quirks and limitations
+	 */
+	if (xbus->quirks.has_fxo) {
+		if (
+			xbus->quirks.has_digital_span &&
+			xpd->type == XPD_TYPE_FXO) {
+			LINE_NOTICE(xpd, pos,
+				"quirk: give up HWEC on FXO: "
+				"AB has digital span\n");
+			return NULL;
+		} else if (
+			xbus->sync_mode != SYNC_MODE_AB &&
+			xpd->type == XPD_TYPE_FXS) {
+			LINE_NOTICE(xpd, pos,
+				"quirk: give up HWEC on FXS: "
+				"AB has FXO and is sync slave\n");
+			return NULL;
+		}
+	}
 	return "XPP";
 }
 EXPORT_SYMBOL(xpp_echocan_name);