This is a note to let you know that I've just added the patch titled
media: ds3000: fix LNB supply voltage on Tevii S480 on initialization
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-ds3000-fix-lnb-supply-voltage-on-tevii-s480-on-initialization.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8c5bcded11cb607b1bb5920de3b9c882136d27db Mon Sep 17 00:00:00 2001
From: Ulrich Eckhardt <uli-lirc@xxxxxxxxxxxxxxx>
Date: Fri, 10 Oct 2014 14:19:12 -0300
Subject: media: ds3000: fix LNB supply voltage on Tevii S480 on initialization
From: Ulrich Eckhardt <uli-lirc@xxxxxxxxxxxxxxx>
commit 8c5bcded11cb607b1bb5920de3b9c882136d27db upstream.
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]
Signed-off-by: Ulrich Eckhardt <uli@xxxxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/dvb-frontends/ds3000.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/media/dvb-frontends/ds3000.c
+++ b/drivers/media/dvb-frontends/ds3000.c
@@ -864,6 +864,13 @@ struct dvb_frontend *ds3000_attach(const
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:
Patches currently in stable-queue which might be from uli-lirc@xxxxxxxxxxxxxxx are
queue-3.14/media-ds3000-fix-lnb-supply-voltage-on-tevii-s480-on-initialization.patch
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