From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:42005 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751372AbaG3UwZ (ORCPT ); Wed, 30 Jul 2014 16:52:25 -0400 Message-ID: <53D95B04.2030109@iki.fi> Date: Wed, 30 Jul 2014 23:52:20 +0300 From: Antti Palosaari MIME-Version: 1.0 To: Bjoern , Rudy Zijlstra CC: Linux Media Mailing List , Thomas Kaiser Subject: Re: ddbridge -- kernel 3.15.6 References: <53C920FB.1040501@grumpydevil.homelinux.org> <53CAAF9D.6000507@kaiser-linux.li> <1406697205.2591.13.camel@bjoern-W35xSTQ-370ST> <53D8EC86.6020701@iki.fi> In-Reply-To: <53D8EC86.6020701@iki.fi> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 07/30/2014 04:00 PM, Antti Palosaari wrote: > > > On 07/30/2014 08:13 AM, Bjoern wrote: >>> Hello Rudy >>> >>> I use a similar card from Digital Devices with Ubuntu 14.04 and >>> kernel 3.13.0-32-generic. Support for this card was not build into >>> the kernel and I had to compile it myself. I had to use >>> media_build_experimental from Mr. Endriss. >>> >>> http://linuxtv.org/hg/~endriss/media_build_experimental >>> >>> Your card should be supported with this version. >>> >>> Regards, Thomas >> >> Hi Rudy, >> >> What Thomas writes is absolutely correct... >> >> This is unfortunately the worst situation I've ever run across in >> Linux... There was a kernel driver that worked and was supported by >> Digital Devices. Then, from what I read, changes to how the V4L drivers >> have to be written was changed - Digital Devices doesn't like that and >> they force users to use "experimental" builds which are the "old >> style". >> >> This is total rubbish imo - if this is how it was decided that the >> drivers have to be nowadays then adjust them. Why am I paying such a lot >> of money others right, these DD cards are really not cheap? >> >> Some attempts have been made by people active here to adapt the drivers >> and make them work in newer kernels, but so far no one has succeeded. >> Last attempt was in Jan 2014 iirc, since then - silence. >> >> I wish I could help out, I can code but Linux is well just a bit more >> "difficult" I guess ;-) > > I have one of such device too, but I have been too busy all the time > with other drivers... > > Basically these DTV drivers should be developed in a order, bridge > driver first, then demod and tuner - for one single device. After it is > committed in tree, you could start adding new devices and drivers. If > you try implement too big bunch of things as a once, you will likely > fail endless reviews and so. > > I don't know what is change in development process which causes these > problems. What I remember there has been only few big changes in recent > years, change from Mercurial to Git and reorganization of > directories/files. Device I have seems to be: DD Cine S2 V6.5 - Twin Tuner Card DVB-S/S2 (PCI Express Card) DD DuoFlex C/C2/T/T2 Expansion (V3) - Twin Tuner Expansion-modul DVB-C/T/T2 I will start looking DVB-S/S2 support at the very first as it is the bridge needed in any case. I have no experience from PCIe devices... regards Antti -- http://palosaari.fi/