diff options
Diffstat (limited to 'drivers/dahdi/wctdm24xxp/base.c')
| -rw-r--r-- | drivers/dahdi/wctdm24xxp/base.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/dahdi/wctdm24xxp/base.c b/drivers/dahdi/wctdm24xxp/base.c index 4a7f1fd..eefba37 100644 --- a/drivers/dahdi/wctdm24xxp/base.c +++ b/drivers/dahdi/wctdm24xxp/base.c @@ -943,6 +943,13 @@ static inline void wctdm_transmitprep(struct wctdm *wc, unsigned char *writechun } } insert_tdm_data(wc, writechunk); +#ifdef CONFIG_VOICEBUS_ECREFERENCE + for (x = 0; x < wc->avchannels; ++x) { + __dahdi_fifo_put(wc->ec_reference[x], + wc->chans[x]->chan.writechunk, + DAHDI_CHUNKSIZE); + } +#endif } for (x = 0; x < DAHDI_CHUNKSIZE; x++) { @@ -1192,7 +1199,14 @@ static inline void wctdm_receiveprep(struct wctdm *wc, const u8 *readchunk) if (likely(wc->initialized)) { for (x = 0; x < wc->avchannels; x++) { struct dahdi_chan *c = &wc->chans[x]->chan; +#ifdef CONFIG_VOICEBUS_ECREFERENCE + unsigned char buffer[DAHDI_CHUNKSIZE]; + __dahdi_fifo_get(wc->ec_reference[x], buffer, + ARRAY_SIZE(buffer)); + dahdi_ec_chunk(c, c->readchunk, buffer); +#else dahdi_ec_chunk(c, c->readchunk, c->writechunk); +#endif } for (x = 0; x < MAX_SPANS; x++) { @@ -4317,6 +4331,12 @@ static void wctdm_back_out_gracefully(struct wctdm *wc) LIST_HEAD(local_list); voicebus_release(&wc->vb); +#ifdef CONFIG_VOICEBUS_ECREFERENCE + for (i = 0; i < ARRAY_SIZE(wc->ec_reference); ++i) { + if (wc->ec_reference[i]) + dahdi_fifo_free(wc->ec_reference[i]); + } +#endif for (i = 0; i < ARRAY_SIZE(wc->spans); ++i) { if (wc->spans[i] && wc->spans[i]->span.chans) @@ -4872,6 +4892,22 @@ __wctdm_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) } up(&ifacelock); +#ifdef CONFIG_VOICEBUS_ECREFERENCE + for (i = 0; i < ARRAY_SIZE(wc->ec_reference); ++i) { + /* 256 is the smallest power of 2 that will contains the + * maximum possible amount of latency. */ + wc->ec_reference[i] = dahdi_fifo_alloc(256, GFP_KERNEL); + + if (IS_ERR(wc->ec_reference[i])) { + ret = PTR_ERR(wc->ec_reference[i]); + wc->ec_reference[i] = NULL; + wctdm_back_out_gracefully(wc); + return ret; + } + } +#endif + + wc->desc = (struct wctdm_desc *)ent->driver_data; /* This is to insure that the analog span is given lowest priority */ |