From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mta5.srv.hcvlny.cv.net ([167.206.4.200]:61528 "EHLO mta5.srv.hcvlny.cv.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756737Ab0JVNGR (ORCPT ); Fri, 22 Oct 2010 09:06:17 -0400 Received: from [IPv6:::1] (ool-4572125f.dyn.optonline.net [69.114.18.95]) by mta5.srv.hcvlny.cv.net (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) with ESMTP id <0LAP00KZW0EFQJL0@mta5.srv.hcvlny.cv.net> for linux-media@vger.kernel.org; Fri, 22 Oct 2010 09:06:15 -0400 (EDT) Date: Fri, 22 Oct 2010 09:06:15 -0400 From: Steven Toth Subject: Re: cx23885 module In-reply-to: To: Daniel Lee Kim Cc: linux-media@vger.kernel.org Message-id: <4CC18C47.9070305@kernellabs.com> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7BIT References: <4CBE0D47.7080201@kernellabs.com> <4CBF57F3.1000008@kernellabs.com> List-ID: Sender: On 10/22/10 9:02 AM, Daniel Lee Kim wrote: > Steve, > > > > > [ 3072.621974] MT2131: successfully identified at address 0x60 > > Would the above message indicate that the tuner has been taken out of reset mode? Yes. > > It's probably the I/F (intermediate frequency) between the > > MT2131 and the LG3305 is incorrect, so the demod does not see the RF correctly > > from the tuner. Try stepping the LG I/F through it's various combination (see > > the LG header .h file) then repeat the test with spectral inversion inverted. > > > > Use azap to tune during each test and watch for status bits 0x1f (meaning the > > demod is locked). > > > > If no lock, adjust the I/F and/or spectral inversion and try again. > > > > - Steve > > Are you suggesting that the above test might resolve the issue of not being able > to tune using the MT2131? I'll take a look at the LG header though I'm using the > LGDT330X driver since mine is the 3303 chip. Yes. > > How do I know that the tuner is working? The modprobe i2c_scan=1 returned a > fatal error, not found. Is there another way to test it? If the MT2131 was detected then it's probably working. modprobe cx23885 i2c_scan=1 should work and show a tuner at address 0xC0, 2 or 4 etc. > > One more question, is there a place I can go to learn how to compile just the > cx23885.ko module? I am not able to compile only that module and so I have to > wait until it compiles all the modules. I apologize as this is my first time > tweaking a driver module. I've searched all over the net but have not found > anyone who wrote about this. Thanks, The wiki at linuxtv.org should contain everything you need for compiling, modifying and submitting patches. Regards, -- Steven Toth - Kernel Labs http://www.kernellabs.com