From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:59271 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753564Ab2GDOdf (ORCPT ); Wed, 4 Jul 2012 10:33:35 -0400 Message-ID: <4FF45438.4030809@iki.fi> Date: Wed, 04 Jul 2012 17:33:28 +0300 From: Antti Palosaari MIME-Version: 1.0 To: Fisher Grubb CC: linux-media@vger.kernel.org Subject: Re: ATI theatre 750 HD tuner USB stick References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 07/04/2012 04:27 PM, Fisher Grubb wrote: > Of course I wouldn't be surprised if people will have to reverse > engineer it from the windows drivers but I thought I would mention it. > I could not find any info on this 750 HD on www.linuxtv.org regarding > where it stands. What help is needed for it? >> Chips: >> ATI: >> T507 >> 0930 >> MADE IN TAIWAN >> P0U493.00 >> 215-0692014 T507 driver is the missing piece. I suspect that SoC integrates many chips, USB-bridge (with IR etc.), DVB-T demodulator and analog decoder. Getting it work as DVB-T device is not mission impossible even without a specs. Reverse-engineering is fun ;-) Generally speaking DVB-bridge is very simple, no problems at all to reverse. DVB demodulator is little bit harder but still possible without loosing even sensitivity. What you lose is configuration options like how IF frequency, SNR, BER is calculated. Tuners are most tricky as there is all kind of calibration routines etc. but in that case tuner driver exists. >> NXP: >> TDA18271HDC2 >> P3KN4 02 >> PG09361 That TDA18271 driver already exists - even two different drivers. regards Antti -- http://palosaari.fi/