diff options
| author | Ulrich Eckhardt <uli-lirc@uli-eckhardt.de> | 2014-10-10 21:19:12 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-10-30 21:53:44 +0300 |
| commit | 8c5bcded11cb607b1bb5920de3b9c882136d27db (patch) | |
| tree | 88fb73983cbb5441f60765bd8d0e55932e883007 /drivers/media | |
| parent | cef83483341e258beed49ce78fb2cc0c46ab1757 (diff) | |
| download | linux-8c5bcded11cb607b1bb5920de3b9c882136d27db.tar.xz | |
[media] ds3000: fix LNB supply voltage on Tevii S480 on initialization
The Tevii S480 outputs 18V on startup for the LNB supply voltage and does not
automatically power down. This blocks other receivers connected
to a satellite channel router (EN50494), since the receivers can not send the
required DiSEqC sequences when the Tevii card is connected to a the same SCR.
This patch switches off the LNB supply voltage on initialization of the frontend.
[mchehab@osg.samsung.com: add a comment about why we're explicitly
turning off voltage at device init]
Cc: stable@vger.kernel.org
Signed-off-by: Ulrich Eckhardt <uli@uli-eckhardt.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb-frontends/ds3000.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c index 335daeff91b9..9d0d0347758f 100644 --- a/drivers/media/dvb-frontends/ds3000.c +++ b/drivers/media/dvb-frontends/ds3000.c @@ -864,6 +864,13 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config, memcpy(&state->frontend.ops, &ds3000_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; + + /* + * Some devices like T480 starts with voltage on. Be sure + * to turn voltage off during init, as this can otherwise + * interfere with Unicable SCR systems. + */ + ds3000_set_voltage(&state->frontend, SEC_VOLTAGE_OFF); return &state->frontend; error3: |