diff options
| author |   Andrew de Quincey <adq_dvb@lidskialf.net> | 2005-07-07 17:57:37 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-07 18:23:53 -0700 |
| commit | 4992775c8287145e86b94fe8d19bbb5f20148cc0 (patch) | |
| tree | 6e2c39415532fe7c7c31f1b936130cd66d4ad036 /drivers/media/dvb/dvb-core/dvb_frontend.c | |
| parent | [PATCH] dvb: core: fix race condition in FE_READ_STATUS ioctl (diff) | |
| download | linux-dev-4992775c8287145e86b94fe8d19bbb5f20148cc0.tar.xz linux-dev-4992775c8287145e86b94fe8d19bbb5f20148cc0.zip | |
[PATCH] dvb: core: add workaround for tuning problem
Add workaround for signal lock loss issue, where the frontend loses the signal
after some hours without any visible reason.
Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvb_frontend.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c index e561ac1e1b16..a8bc84240b50 100644 --- a/drivers/media/dvb/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c @@ -42,6 +42,8 @@ #include "dvb_frontend.h" #include "dvbdev.h" +// #define DEBUG_LOCKLOSS 1 + static int dvb_frontend_debug; static int dvb_shutdown_timeout = 5; static int dvb_force_auto_inversion; @@ -113,6 +115,7 @@ struct dvb_frontend_private { int exit; int wakeup; fe_status_t status; + fe_sec_tone_mode_t tone; }; @@ -434,9 +437,26 @@ static int dvb_frontend_thread(void *data) /* we're tuned, and the lock is still good... */ if (s & FE_HAS_LOCK) continue; - else { - /* if we _WERE_ tuned, but now don't have a lock, - * need to zigzag */ + else { /* if we _WERE_ tuned, but now don't have a lock */ +#ifdef DEBUG_LOCKLOSS + /* first of all try setting the tone again if it was on - this + * sometimes works around problems with noisy power supplies */ + if (fe->ops->set_tone && (fepriv->tone == SEC_TONE_ON)) { + fe->ops->set_tone(fe, fepriv->tone); + mdelay(100); + s = 0; + fe->ops->read_status(fe, &s); + if (s & FE_HAS_LOCK) { + printk("DVB%i: Lock was lost, but regained by setting " + "the tone. This may indicate your power supply " + "is noisy/slightly incompatable with this DVB-S " + "adapter\n", fe->dvb->num); + fepriv->state = FESTATE_TUNED; + continue; + } + } +#endif + /* some other reason for losing the lock - start zigzagging */ fepriv->state = FESTATE_ZIGZAG_FAST; fepriv->started_auto_step = fepriv->auto_step; check_wrapped = 0; @@ -691,6 +711,7 @@ static int dvb_frontend_ioctl(struct inode *inode, struct file *file, err = fe->ops->set_tone(fe, (fe_sec_tone_mode_t) parg); fepriv->state = FESTATE_DISEQC; fepriv->status = 0; + fepriv->tone = (fe_sec_tone_mode_t) parg; } break; @@ -893,6 +914,7 @@ int dvb_register_frontend(struct dvb_adapter* dvb, init_MUTEX (&fepriv->events.sem); fe->dvb = dvb; fepriv->inversion = INVERSION_OFF; + fepriv->tone = SEC_TONE_OFF; printk ("DVB: registering frontend %i (%s)...\n", fe->dvb->num, |