From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from lists.s-osg.org ([54.187.51.154]:37376 "EHLO lists.s-osg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751753AbaIXNci (ORCPT ); Wed, 24 Sep 2014 09:32:38 -0400 Date: Wed, 24 Sep 2014 10:32:33 -0300 From: Mauro Carvalho Chehab To: Akihiro TSUKADA Cc: linux-media@vger.kernel.org Subject: Re: [PATCH v4 3/4] tc90522: add driver for Toshiba TC90522 quad demodulator Message-ID: <20140924103233.2efc00ed@recife.lan> In-Reply-To: <5422B3D3.80209@gmail.com> References: <1410196843-26168-1-git-send-email-tskd08@gmail.com> <1410196843-26168-4-git-send-email-tskd08@gmail.com> <20140923170730.4d5d167e@recife.lan> <542233E5.5070201@gmail.com> <20140924062812.6308f584@recife.lan> <5422A779.8030901@gmail.com> <20140924083030.3fdcfe3e@recife.lan> <5422B3D3.80209@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Em Wed, 24 Sep 2014 21:06:43 +0900 Akihiro TSUKADA escreveu: > > And TMCC returns it as 0, 1, 2, 3, 4, instead of 0, 1, 2, 4, 8. > > According to ARIB STD B31 3.15.6.7 (table 3.30), > The value is encoded and depends on the "mode". > so demods have to encode/decode anyway. Ok, but see the definition at the API spec: http://linuxtv.org/downloads/v4l-dvb-apis/FE_GET_SET_PROPERTY.html#isdb-hierq-layers Basically, we use 0, 1, 2, 4 no matter what mode, e. g. DTV_ISDBT_LAYERA_TIME_INTERLEAVING 1 means: Interleave = 4 for mode 1 Interleave = 2 for mode 2 Interleave = 1 for mode 3 > > AFAIKT, that doesn't work in Sound Broadcast mode, as the demod won't > > be able to read the TMCC (at least on most demods - don't have any > > details about tc90522). > > I forgat ISDB-Tsb;P, as in Japan terrestrial digital sound broadcast > was cancelled in 2011 and it was unpopular. Ah, I wasn't aware that ISDB-Tsb was cancelled in Japan. Regards, Mauro