From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from top.free-electrons.com ([176.31.233.9]:46503 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751798Ab3LEMWm (ORCPT ); Thu, 5 Dec 2013 07:22:42 -0500 Date: Thu, 5 Dec 2013 09:22:40 -0300 From: Ezequiel Garcia To: Hans Verkuil , Andrea Venturi Cc: linux-media@vger.kernel.org Subject: Re: advice on Easycap dongles and VBI interface.. Message-ID: <20131205122239.GB2345@localhost> References: <52A058EF.9000701@avalpa.com> <52A0693C.7060704@xs4all.nl> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <52A0693C.7060704@xs4all.nl> Sender: linux-media-owner@vger.kernel.org List-ID: Hi Andrea and Hans, On Thu, Dec 05, 2013 at 12:53:32PM +0100, Hans Verkuil wrote: > > > - finally which approach do you suggest for supporting this ancient > > feature, if feasibiliy tests are ok: - a libusb quick hack? - an > > implementation of the bindings between user level /dev/vbi and > > underlying SAA711x routines? > > The problem is that I don't believe we have any stk1160 documentation. I do have the stk1160 chip datasheet. However, it's not publicly available and I'm not sure I should disclose it (although syntek never advise me against it). In additio, the datasheet is not very verbose and the information is scarce and often incomplete. > And I wonder if the device can support VBI at all. > Apparently it does: at least there's a flag to "enable" VBI mode. > You are better off choosing devices that already have VBI support: the > em28xx supports it, so do bt8xx, cx18 and ivtv. > I agree with this. I don't have any VBI source so there's no way I can work on this (not to mention it's not something lots of users need). -- Ezequiel García, Free Electrons Embedded Linux, Kernel and Android Engineering http://free-electrons.com