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xpp: fxs: bugfix for 2fxs+6fxo cards

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* Bug sympthoms: wrong FSK VMWI sent few seconds after
  offhook. That was caused because the driver kept
  polling the (physically unconnected) digital inputs.
  [note: a workaround for drivers without this patch
   is to zero the 'xpd_fxs.poll_digital_inputs' parameter.]

* Also, the digital_inputs/digital_output masks were
  calculate using a different condition.

* Now we determine number of channels, digital inputs and
  digital outputs in a single place and use this info
  later to calculate the correct masks.

* We poll only if there are digital_inputs

* We added a sanity check in process_digital_inputs, so
  we get a notice if it's called on an xpd without digital
  inputs (e.g: hypothetic firmware bug).

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/branches/2.5@10208 a0bf4364-ded3-4de4-8d8a-66a801d63aff
This commit is contained in:
Tzafrir Cohen 2011-09-25 08:59:02 +00:00
parent 2bc2ebd1de
commit fcbde772c4
1 changed files with 31 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
drivers/dahdi/xpp/card_fxs.c
View File

@ -386,6 +386,8 @@ static xpd_t *FXS_card_new(xbus_t *xbus, int unit, int subunit, const xproto_tab
int regular_channels;
struct FXS_priv_data *priv;
int i;
int d_inputs = 0;
int d_outputs = 0;
if(!to_phone) {
XBUS_NOTICE(xbus,
@ -398,16 +400,30 @@ static xpd_t *FXS_card_new(xbus_t *xbus, int unit, int subunit, const xproto_tab
else
regular_channels = min(8, subunit_ports);
channels = regular_channels;
if(unit == 0 && subtype != 4)
/* Calculate digital inputs/outputs */
if(unit == 0 && subtype != 4) {
channels += 6; /* 2 DIGITAL OUTPUTS, 4 DIGITAL INPUTS */
d_inputs = LINES_DIGI_INP;
d_outputs = LINES_DIGI_OUT;
}
xpd = xpd_alloc(xbus, unit, subunit, subtype, subunits, sizeof(struct FXS_priv_data), proto_table, channels);
if(!xpd)
return NULL;
if(unit == 0) {
XBUS_DBG(GENERAL, xbus, "First XPD detected. Initialize digital outputs/inputs\n");
PHONEDEV(xpd).digital_outputs = BITMASK(LINES_DIGI_OUT) << regular_channels;
PHONEDEV(xpd).digital_inputs = BITMASK(LINES_DIGI_INP) << (regular_channels + LINES_DIGI_OUT);
}
/* Initialize digital inputs/outputs */
if (d_inputs) {
XBUS_DBG(GENERAL, xbus, "Initialize %d digital inputs\n",
d_inputs);
PHONEDEV(xpd).digital_inputs =
BITMASK(d_inputs) << (regular_channels + d_outputs);
} else
XBUS_DBG(GENERAL, xbus, "No digital inputs\n");
if (d_outputs) {
XBUS_DBG(GENERAL, xbus, "Initialize %d digital outputs\n",
d_outputs);
PHONEDEV(xpd).digital_outputs =
BITMASK(d_outputs) << regular_channels;
} else
XBUS_DBG(GENERAL, xbus, "No digital outputs\n");
PHONEDEV(xpd).direction = TO_PHONE;
xpd->type_name = "FXS";
if(fxs_proc_create(xbus, xpd) < 0)
@ -1142,7 +1158,7 @@ static int FXS_card_tick(xbus_t *xbus, xpd_t *xpd)
priv = xpd->priv;
BUG_ON(!priv);
#ifdef POLL_DIGITAL_INPUTS
if(poll_digital_inputs && xpd->xbus_idx == 0) {
if (poll_digital_inputs && PHONEDEV(xpd).digital_inputs) {
if((xpd->timer_count % poll_digital_inputs) == 0)
poll_inputs(xpd);
}
@ -1254,6 +1270,13 @@ static void process_digital_inputs(xpd_t *xpd, const reg_cmd_t *info)
bool offhook = (REG_FIELD(info, data_low) & 0x1) == 0;
xpp_line_t lines = BIT(info->portnum);
/* Sanity check */
if (!PHONEDEV(xpd).digital_inputs) {
XPD_NOTICE(xpd,
"%s called without digital inputs. Ignored\n",
__func__);
return;
}
/* Map SLIC number into line number */
for(i = 0; i < ARRAY_SIZE(input_channels); i++) {
int channo = input_channels[i];
@ -1366,7 +1389,7 @@ static int FXS_card_register_reply(xbus_t *xbus, xpd_t *xpd, reg_cmd_t *info)
/*
* Process digital inputs polling results
*/
else if(xpd->xbus_idx == 0 && !indirect && regnum == REG_DIGITAL_IOCTRL) {
else if (!indirect && regnum == REG_DIGITAL_IOCTRL) {
process_digital_inputs(xpd, info);
}
#endif