From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-ew0-f46.google.com ([209.85.215.46]:55577 "EHLO mail-ew0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752857Ab1HTL1M (ORCPT ); Sat, 20 Aug 2011 07:27:12 -0400 Received: by ewy4 with SMTP id 4so1394467ewy.19 for ; Sat, 20 Aug 2011 04:27:11 -0700 (PDT) Message-ID: <4E4F9A0B.4050302@gmail.com> Date: Sat, 20 Aug 2011 13:27:07 +0200 From: Sylwester Nawrocki MIME-Version: 1.0 To: Mauro Carvalho Chehab CC: Laurent Pinchart , Sylwester Nawrocki , "linux-media@vger.kernel.org" , Sakari Ailus Subject: Re: Embedded device and the V4L2 API support - Was: [GIT PATCHES FOR 3.1] s5p-fimc and noon010pc30 driver updates References: <4E303E5B.9050701@samsung.com> <201108151430.42722.laurent.pinchart@ideasonboard.com> <4E49B60C.4060506@redhat.com> <201108161057.57875.laurent.pinchart@ideasonboard.com> <4E4A8D27.1040602@redhat.com> <4E4AE583.6050308@gmail.com> <4E4B5C27.3000008@redhat.com> In-Reply-To: <4E4B5C27.3000008@redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Hi Mauro, On 08/17/2011 08:13 AM, Mauro Carvalho Chehab wrote: > It seems that there are too many miss understandings or maybe we're just > talking the same thing on different ways. > > So, instead of answering again, let's re-start this discussion on a > different way. > > One of the requirements that it was discussed a lot on both mailing > lists and on the Media Controllers meetings that we had (or, at least > in the ones where I've participated) is that: > > "A pure V4L2 userspace application, knowing about video device > nodes only, can still use the driver. Not all advanced features > will be available." What does a term "a pure V4L2 userspace application" mean here ? Does it also account an application which is linked to libv4l2 and uses calls specific to a particular hardware which are included there? > > This is easily said than done. Also, different understandings can be > obtained by a simple phrase like that. -- Regards, Sylwester