From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mout.gmx.net ([212.227.15.18]:62818 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754874Ab3FTILR (ORCPT ); Thu, 20 Jun 2013 04:11:17 -0400 Received: from mailout-de.gmx.net ([10.1.76.31]) by mrigmx.server.lan (mrigmx002) with ESMTP (Nemesis) id 0MJHUa-1UrDr70Fz8-002mJV for ; Thu, 20 Jun 2013 10:11:15 +0200 Message-ID: <51C2B91F.3000305@gmx.net> Date: Thu, 20 Jun 2013 10:11:11 +0200 From: "P. van Gaans" MIME-Version: 1.0 To: linux-media@vger.kernel.org Subject: Re: EM28xx - MSI Digivox Trio - almost working. References: <51C28FA2.70004@gmx.net> <51C2B1E7.9040408@iki.fi> In-Reply-To: <51C2B1E7.9040408@iki.fi> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 20-06-13 09:40, Antti Palosaari wrote: > On 06/20/2013 08:14 AM, P. van Gaans wrote: >> Hi all, >> >> (device: http://linuxtv.org/wiki/index.php/MSI_DigiVox_Trio) >> >> Thanks to the message from Philip Pemberton I was able to try loading >> the em28xx driver myself using: >> >> sudo modprobe em28xx card=NUMBER >> echo eb1a 2885 | sudo tee /sys/bus/usb/drivers/em28xx/new_id >> >> Here are the results for NUMBER: >> >> Card=79 (Terratec Cinergy H5): works, less corruption than card=87, just >> some blocks every few seconds. Attenuators didn't help. >> Card=81 (Hauppauge WinTV HVR 930C): doesn't work, no /dev/dvb adapter >> Card=82 (Terratec Cinergy HTC Stick): similar to card=87 >> Card=85 (PCTV QuatroStick (510e)): constantly producing i2c read errors, >> doesn't work >> Card=86 (PCTV QuatroStick nano (520e): same >> Card=87 (Terratec Cinergy HTC USB XS): stick works and scans channels, >> but reception is bugged with corruption. It's like having a DVB-T >> antenna that's just not good enough, except this is DVB-C and my signal >> is excellent. Attenuators didn't help. >> Card=88 (C3 Tech Digital Duo HDTV/SDTV USB): doesn't work, no /dev/dvb >> adapter >> >> So with card=79 it's really close to working. What else can I do? > > Take USB sniffs, generate code, copy & paste that to the driver until it > starts working. After it start working start reducing generated code. > That way with trial and error you will find out problematic register(s) > very quickly. > > There is suitable scripts to generate em28xx drx-k code from the sniffs, > maybe in dvb-utils package. Mauro has done that script. I used it when I > added PCTV 520e support (problem was bug in DRX-K GPIO code). > > regards > Antti > Hi Antti, Thanks for your answer. Do you mean I sniff on Windows or Linux? Would you happen to remember the name of the script you are referring to? Also in em28xx-new (https://bitbucket.org/mdonoughe/em28xx-new/overview) the device was supported. Wouldn't it be easier to try and find the differences between the Cinergy H5 and the Digivox in that code, or should I not even think of going there? Best regards, P. van Gaans