From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755393Ab1JQVlL (ORCPT ); Mon, 17 Oct 2011 17:41:11 -0400 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:46964 "EHLO opensource.wolfsonmicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754090Ab1JQVlK (ORCPT ); Mon, 17 Oct 2011 17:41:10 -0400 Date: Mon, 17 Oct 2011 22:41:07 +0100 From: Mark Brown To: Ashish Chavan Cc: lrg , alsa-devel , David Dajun Chen , "kuninori.morimoto.gx" , linux-kernel Subject: Re: [alsa-devel] [PATCH v3 2/8] ASoC: da7210: Add support for DAPM Message-ID: <20111017214107.GC5200@opensource.wolfsonmicro.com> References: <1318590098.12107.509.camel@matrix> <20111014192008.GD2931@opensource.wolfsonmicro.com> <1318666803.613.21.camel@matrix> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1318666803.613.21.camel@matrix> X-Cookie: Is this really happening? User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Oct 15, 2011 at 01:50:03PM +0530, Ashish Chavan wrote: > There are two type of registers for all IOs (HP, MIC, AUX) as well as > DAC and ADC. One type of registers control individual enable and disable > of IO, while other set of register controls the standby mode of that > particular IO. e.g. For ADC, What are "enable and disable" in this context? What do they do if not put the part of the chip into a low power mode? This is an intriguing hardware design and it really needs some documentation in the driver, right now it's just far too obscure and the driver looks buggy on code inspection.