From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liam Girdwood Subject: Re: [PATCH] ASoC: ak4642: Add ak4642_fill_cache function Date: Fri, 25 Jun 2010 11:47:33 +0100 Message-ID: <1277462853.3123.13.camel@odin> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ww0-f51.google.com (mail-ww0-f51.google.com [74.125.82.51]) by alsa0.perex.cz (Postfix) with ESMTP id 349BD2455F for ; Fri, 25 Jun 2010 12:47:36 +0200 (CEST) Received: by wwb39 with SMTP id 39so219375wwb.38 for ; Fri, 25 Jun 2010 03:47:35 -0700 (PDT) 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: Kuninori Morimoto Cc: Linux-ALSA , Mark Brown List-Id: alsa-devel@alsa-project.org On Fri, 2010-06-25 at 16:54 +0900, Kuninori Morimoto wrote: > ak4642 driver is used for ak4642/ak4643. > So, reading real register value is better than using constant value. > To be honest, this is only really useful when the codec has some volatile registers. Forcing I2C reads for all IO will just slow down the driver. Does this codec have volatile registers ? Thanks Liam -- Freelance Developer, SlimLogic Ltd ASoC and Voltage Regulator Maintainer. http://www.slimlogic.co.uk