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Date: Wed, 18 Apr 2012 23:00:46 +0300
From: Antti Palosaari <crope@iki.fi>
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To: Thomas Mair <thomas.mair86@googlemail.com>
CC: linux-media@vger.kernel.org
Subject: Re: RTL28XX driver
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On 18.04.2012 21:35, Antti Palosaari wrote:
> The method should be selected based of knowledge if GPIO used for
> controlling FC0012 tuner OR controlling some other part (LNA, anatenna
> switch, etc.) So you have to identify meaning first. Look inside FC0012
> driver to see if there is some mention about that GPIO.

It is tuner VHF/UHF filter(?). You should use frontend callback with 
DVB_FRONTEND_COMPONENT_TUNER and add handler for it. See example from 
FC0011 & AF9035.

regards
Antti
-- 
http://palosaari.fi/