From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: user space control app driver interface for sound soc Date: Fri, 1 Oct 2010 10:35:35 -0700 Message-ID: <20101001173534.GA21157@opensource.wolfsonmicro.com> References: <20100930203118.GA4175@opensource.wolfsonmicro.com> <20100930220953.GF4175@opensource.wolfsonmicro.com> <20100930233453.GH4175@opensource.wolfsonmicro.com> <20101001023728.GK4175@opensource.wolfsonmicro.com> <4CA58619.2090408@ladisch.de> <20101001071233.GB20529@opensource.wolfsonmicro.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from opensource2.wolfsonmicro.com (opensource.wolfsonmicro.com [80.75.67.52]) by alsa0.perex.cz (Postfix) with ESMTP id A3CE4103805 for ; Fri, 1 Oct 2010 19:35:20 +0200 (CEST) Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Takashi Iwai Cc: Peter Hsiang , "alsa-devel@alsa-project.org" , Clemens Ladisch List-Id: alsa-devel@alsa-project.org On Fri, Oct 01, 2010 at 03:42:55PM +0200, Takashi Iwai wrote: > FWIW, if it's an EQ band coef data or such small and more-or-less safe > data, you can create even a dedicated ALSA control element to > read/write the byte array. For example, SPDIF status bits are > transferred in that way between the driver and the user-space. Though in the embedded case platform data often ends up being idomatic since many of the typical uses revolve around tuning things for physical properties of the platform.