From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [PATCH] New ASoC Drivers for ADI AD1938 codec Date: Mon, 13 Jul 2009 10:15:38 +0100 Message-ID: <20090713091538.GA6987@rakim.wolfsonmicro.main> References: <1245403695-20537-1-git-send-email-21cnbao@gmail.com> <20090619104738.GF5270@sirena.org.uk> <3c17e3570907130112i128dd0f2o4673200de3125d5d@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from opensource2.wolfsonmicro.com (opensource.wolfsonmicro.com [80.75.67.52]) by alsa0.perex.cz (Postfix) with ESMTP id 3631E24372 for ; Mon, 13 Jul 2009 11:15:40 +0200 (CEST) Content-Disposition: inline In-Reply-To: <3c17e3570907130112i128dd0f2o4673200de3125d5d@mail.gmail.com> 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: =?utf-8?B?5a6L5a6d5Y2O?= <21cnbao@gmail.com> Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Mike Frysinger , lrg@slimlogic.co.uk List-Id: alsa-devel@alsa-project.org T24gTW9uLCBKdWwgMTMsIDIwMDkgYXQgMDQ6MTI6MTRQTSArMDgwMCwg5a6L5a6d5Y2OIHdyb3Rl OgoKPiBJIHdhbnQgdG8gdXNlIEFEQy9EQUMgd2lkZ2V0cy4KPiBzdGF0aWMgY29uc3Qgc3RydWN0 IHNuZF9zb2NfZGFwbV93aWRnZXQgYWQxOTM4X2RhcG1fd2lkZ2V0c1tdID0gewo+ICAgICAgICAg U05EX1NPQ19EQVBNX0RBQygiREFDIiwgIkhpRmkgUGxheWJhY2siLCBBRDE5MzhfREFDX0NUUkww LCAwLCAxKSwKPiAgICAgICAgIFNORF9TT0NfREFQTV9BREMoIkFEQyIsICJIaUZpIENhcHR1cmUi LCBBRDE5MzhfQURDX0NUUkwwLCAwLCAxKSwKPiB9Owo+IEJ1dCBmb3IgdGhpcyBBRDE5MzggY29k ZWMsIERBQydzIHdvcmsgZGVwZW5kcyBvbiBBREMgaXMgcG93ZXJlZCBvbiBpbgo+IGhhcmR3YXJl LiAgSSB0aGluayB0aGVyZSBpcyBubyBhbnkgbWVjaGFuaXNtIHRvIGhhbmRsZSB0aGlzIGtpbmQg b2YKPiBzdHJhbmdlIGRlcGVuZGluZyBub3cuICBTbyBpcyB0aGVyZSBhIGdlbmVyaWMgd2F5IHRv IGhhbmRsZSB0aGlzPwoKTWFrZSB0aGUgQURDIHBvd2VyIGEgU05EX1NPQ19EQVBNX1NVUFBMWSgp IHN1cHBseWluZyBib3RoIHRoZSBEQUMgYW5kCnRoZSBBREMsIHdpdGggdGhlIEFEQyB3aWRnZXQg bWFyZ2VkIGFzIGhhdmluZyBubyBwb3dlciBtYW5hZ2VtZW50LgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpBbHNhLWRldmVsIG1haWxpbmcgbGlzdApBbHNh LWRldmVsQGFsc2EtcHJvamVjdC5vcmcKaHR0cDovL21haWxtYW4uYWxzYS1wcm9qZWN0Lm9yZy9t YWlsbWFuL2xpc3RpbmZvL2Fsc2EtZGV2ZWwK From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755193AbZGMJPm (ORCPT ); Mon, 13 Jul 2009 05:15:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755131AbZGMJPl (ORCPT ); Mon, 13 Jul 2009 05:15:41 -0400 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:42710 "EHLO opensource2.wolfsonmicro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754939AbZGMJPl (ORCPT ); Mon, 13 Jul 2009 05:15:41 -0400 Date: Mon, 13 Jul 2009 10:15:38 +0100 From: Mark Brown To: =?utf-8?B?5a6L5a6d5Y2O?= <21cnbao@gmail.com> Cc: lrg@slimlogic.co.uk, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Mike Frysinger Subject: Re: [PATCH] New ASoC Drivers for ADI AD1938 codec Message-ID: <20090713091538.GA6987@rakim.wolfsonmicro.main> References: <1245403695-20537-1-git-send-email-21cnbao@gmail.com> <20090619104738.GF5270@sirena.org.uk> <3c17e3570907130112i128dd0f2o4673200de3125d5d@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <3c17e3570907130112i128dd0f2o4673200de3125d5d@mail.gmail.com> X-Cookie: Vote anarchist. User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 13, 2009 at 04:12:14PM +0800, 宋宝华 wrote: > I want to use ADC/DAC widgets. > static const struct snd_soc_dapm_widget ad1938_dapm_widgets[] = { > SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AD1938_DAC_CTRL0, 0, 1), > SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AD1938_ADC_CTRL0, 0, 1), > }; > But for this AD1938 codec, DAC's work depends on ADC is powered on in > hardware. I think there is no any mechanism to handle this kind of > strange depending now. So is there a generic way to handle this? Make the ADC power a SND_SOC_DAPM_SUPPLY() supplying both the DAC and the ADC, with the ADC widget marged as having no power management.