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Subject: [media] ds3000: fix LNB supply voltage on Tevii S480 on initialization Author: Ulrich Eckhardt <uli-l...@uli-eckhardt.de> Date: Fri Oct 10 14:19:12 2014 -0300 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. [mche...@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 <u...@uli-eckhardt.de> Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com> drivers/media/dvb-frontends/ds3000.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) --- http://git.linuxtv.org/media_tree.git?a=commitdiff;h=8c5bcded11cb607b1bb5920de3b9c882136d27db diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c index 335daef..9d0d034 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: -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
