From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:50728 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756244AbZHYWiH (ORCPT ); Tue, 25 Aug 2009 18:38:07 -0400 Message-ID: <4A9467CF.2070207@iki.fi> Date: Wed, 26 Aug 2009 01:38:07 +0300 From: Antti Palosaari MIME-Version: 1.0 To: Devin Heitmueller CC: Jose Alberto Reguero , linux-media@vger.kernel.org, Michael Krufky Subject: Re: Noisy video with Avermedia AVerTV Digi Volar X HD (AF9015) and mythbuntu 9.04 References: <8527bc070908040016x5d5ad15bk8c2ef6e99678f9e9@mail.gmail.com> <200908041312.52878.jareguero@telefonica.net> <8527bc070908041423p439f2d35y2e31014a10433c80@mail.gmail.com> <200908042348.58148.jareguero@telefonica.net> <4A945CA4.6010402@iki.fi> <829197380908251501l7731536bg79dd8595cd7ce50d@mail.gmail.com> <4A94612A.2070705@iki.fi> <829197380908251524m66bc9a46i5428bdc28ecab153@mail.gmail.com> In-Reply-To: <829197380908251524m66bc9a46i5428bdc28ecab153@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 08/26/2009 01:24 AM, Devin Heitmueller wrote: > On Tue, Aug 25, 2009 at 6:09 PM, Antti Palosaari wrote: >> If demod (and tuner) is powered off by bridge (.power_ctrl) that's not >> possible. Is there way to call bridge .power_ctrl to wake up demod and >> tuner? I added param for demdod state to track sleep/wake state and return 0 >> in sleep case. But that does not sounds good solution... > > Michael Krufky actually put together some patches to allow the bridge > to intercept frontend calls, which would allow for things like power > management. I don't know if they've been merged yet. OK, lets see. I wonder why v4l-dvb -framework even allows IOCTLs when device is powered off. This sounds like wrong functionality from my sight. Why not to power on device before all IOCTL request. Some IOCTLs like SET_FRONTEND will of course power on device but most not. regards Antti -- http://palosaari.fi/