[git:media_tree/master] [media] ds3000: fix LNB supply voltage on Tevii S480 on initialization

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This is an automatic generated email to let you know that the following patch were queued at the 
http://git.linuxtv.org/media_tree.git tree:

Subject: [media] ds3000: fix LNB supply voltage on Tevii S480 on initialization
Author:  Ulrich Eckhardt <uli-lirc@xxxxxxxxxxxxxxx>
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.

[mchehab@xxxxxxxxxxxxxxx: add a comment about why we're explicitly
 turning off voltage at device init]
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Ulrich Eckhardt <uli@xxxxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>

 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:
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