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xpp: add FXO HWEC quirks handling

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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@xorcom.com>
Acked-By: Tzafrir Cohen <tzafrir.cohen@xorcom.com>

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@10019 a0bf4364-ded3-4de4-8d8a-66a801d63aff
This commit is contained in:
Oron Peled
2011-07-04 14:04:33 +00:00
committed by Tzafrir Cohen
parent bfbfdbab33
commit d7e723ae8a
3 changed files with 28 additions and 0 deletions
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4
drivers/dahdi/xpp/xbus-core.c
View File

@@ -664,6 +664,10 @@ static int new_card(xbus_t *xbus,
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;

4
drivers/dahdi/xpp/xbus-core.h
View File

@@ -207,6 +207,10 @@ struct xbus {
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: */

20
drivers/dahdi/xpp/xpp_dahdi.c
View File

@@ -940,6 +940,26 @@ const char *xpp_echocan_name(const struct dahdi_chan *chan)
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);