From: Christophe Thommeret <hftom@free.fr>
Date: Wed, 15 Oct 2008 23:01:32 +0000 (-0300)
Subject: V4L/DVB (9270): cx24116: optimise emulated auto-pilot
X-Git-Tag: v2.6.28-rc1~256^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=745632147d54cd4db6812045351510ebd3981a24;p=pandora-kernel.git

V4L/DVB (9270): cx24116: optimise emulated auto-pilot

Christophe divulged the following:
"Since 8PSK (and higher mod) signals are very likely to have pilot symbols,
pilot_auto should start with pilot_on for 8PSK.
And since QPSK signals are unlikely to have pilot, pilot_auto should start
with pilot_off for QPSK.

Without the patch:
QPSK tuning delay: ~100ms
8PSK tuning delay: ~900ms
with patch:
QPSK tuning delay: ~100ms
8PSK tuning delay: ~100ms
"

This patch does as Cristophe asks. In emulated auto-pilot we
choose pilot-on for tuning PSK_8 and pilot-off for
tuning QPSK.

Signed-off-by: Darron Broad <darron@kewl.org>
Signed-off-by: Steven Toth <stoth@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

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