From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mailout-de.gmx.net ([213.165.64.23]:41761 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1759927Ab2FURLR (ORCPT ); Thu, 21 Jun 2012 13:11:17 -0400 Message-ID: <4FE355B2.50906@fisher-privat.net> Date: Thu, 21 Jun 2012 19:11:14 +0200 From: Oleksij Rempel MIME-Version: 1.0 To: Laurent Pinchart CC: linux-uvc-devel@lists.sourceforge.net, linux-media@vger.kernel.org Subject: Re: [linux-uvc-devel] [RFC] Media controller entity information ioctl [was "Re: [patch] suggestion for media framework"] References: <4FCB9C12.1@fisher-privat.net> <9993866.a3VUSWRbyi@avalon> <1915602.ON5YbSOUmP@avalon> In-Reply-To: <1915602.ON5YbSOUmP@avalon> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 08.06.2012 04:46, Laurent Pinchart wrote: > Hi Robert, > > On Monday 04 June 2012 10:11:33 Robert Krakora wrote: >> When you say "static" you mean items that are "well known" by the system by >> reading a registry at initialization? > > By static I mean items that are initialized at driver initialization time and > not modified afterwards. I don't think we should support adding/removing items > at runtime, at least in the first version. > >> When a new device exposes functionality that necessitates the creation of a >> new "static" item then how does the registry get updated to reflect this or >> am I misunderstanding? > > Item types should be defined in a kernel header and documented. If a driver > needs a new item types, the driver developer should add the new type to the > header and document it. Hi Laurent, what is your progress on this issue? I was able to make video stream on my webcam work more stable by setting "snd_usb_audio ignore_ctl_error=1". I think it is one of cases where media framework should help. -- Regards, Oleksij