From: Antti Palosaari <crope@iki.fi>
To: "Michael Büsch" <m@bues.ch>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>,
linux-media <linux-media@vger.kernel.org>,
Hans-Frieder Vogt <hfvogt@gmx.net>,
Gianluca Gennari <gennarone@gmail.com>
Subject: Re: [PATCH] Add fc0011 tuner driver
Date: Tue, 03 Apr 2012 00:52:08 +0300 [thread overview]
Message-ID: <4F7A1F88.1060109@iki.fi> (raw)
In-Reply-To: <20120402195125.771b2c72@milhouse>
On 02.04.2012 20:51, Michael Büsch wrote:
>> Likely tuner driver, or demod driver. But as demod tuner initialization
>> tables are likely correct I suspect it is tuner issue at first hand. And
>> secondly my other hardware with TUA9001 performs very well, better than
>> old AF9015 sticks.
>
> Well the fc0011 tuner driver still works worse on this af9035 driver
> than on Hans' driver. I have absolutely no idea why this is the case.
> I'm almost certain that it is not a timing issue of some sort. I tried
> a zillion of delays and such.
And after taking sniffs and comparing those I found the reason. It is
I2C adapter code. It writes one byte too much => as a FC0011 is
auto-increment (as almost every I2C client) registers it means it writes
next register too. Fixing that gives normal tuner sensitivity. I will
try to make patch for that soon.
regards
Antti
--
http://palosaari.fi/
next prev parent reply other threads:[~2012-04-02 21:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-02 16:14 [PATCH] Add fc0011 tuner driver Michael Büsch
2012-04-02 16:56 ` Antti Palosaari
2012-04-02 17:20 ` Michael Büsch
2012-04-02 17:40 ` Antti Palosaari
2012-04-02 17:51 ` Michael Büsch
2012-04-02 21:52 ` Antti Palosaari [this message]
2012-04-03 6:36 ` Michael Büsch
2012-05-07 19:02 ` Antti Palosaari
2012-05-07 21:00 ` Michael Büsch
2012-05-07 21:13 ` Rémi Denis-Courmont
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