From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: [RFC][PATCH 00/15 v4] OXFW driver, a succesor to firewire-speakers Date: Tue, 12 Aug 2014 09:09:54 +0200 Message-ID: <53E9BDC2.3000801@ladisch.de> References: <1399991272-5807-1-git-send-email-o-takashi@sakamocchi.jp> <53E795BD.1070100@ladisch.de> <53E957EA.3030601@sakamocchi.jp> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from dehamd003.servertools24.de (dehamd003.servertools24.de [31.47.254.18]) by alsa0.perex.cz (Postfix) with ESMTP id 62CE4261AAF for ; Tue, 12 Aug 2014 09:09:56 +0200 (CEST) In-Reply-To: <53E957EA.3030601@sakamocchi.jp> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Takashi Sakamoto Cc: alsa-devel@alsa-project.org, stefanr@s5r6.in-berlin.de, fenlason@redhat.com, ffado-devel@lists.sf.net, linux1394-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org Takashi Sakamoto wrote: > On Aug 11 2014 00:54, Clemens Ladisch wrote: >> The old driver configured nothing but the rate. Is there any mechanism >> to set the stream format? > > Yes. It's AV/C stream format information command. > [...] > But in this series of patches, I don't use this command. I expected the > models to change stream format according to parameters in AMDTP packets > such like the value of dbs field. Apparently, the firmware doesn't support automatic format detection completely, and requires this command for the 2ch 32/44.1 kHz modes. (That 2ch at 96 kHz actually works is even more curious. There already is that bug regarding listing the seventh format; it's possible that they completely forgot to report an eighth format.) Regards, Clemens