All of lore.kernel.org
 help / color / mirror / Atom feed
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: 宋宝华 <21cnbao@gmail.com>
Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
	Mike Frysinger <vapier.adi@gmail.com>,
	lrg@slimlogic.co.uk
Subject: Re: [PATCH] New ASoC Drivers for ADI AD1938 codec
Date: Mon, 13 Jul 2009 10:15:38 +0100	[thread overview]
Message-ID: <20090713091538.GA6987@rakim.wolfsonmicro.main> (raw)
In-Reply-To: <3c17e3570907130112i128dd0f2o4673200de3125d5d@mail.gmail.com>

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.
_______________________________________________
Alsa-devel mailing list
Alsa-devel@alsa-project.org
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: 宋宝华 <21cnbao@gmail.com>
Cc: lrg@slimlogic.co.uk, alsa-devel@alsa-project.org,
	linux-kernel@vger.kernel.org,
	Mike Frysinger <vapier.adi@gmail.com>
Subject: Re: [PATCH] New ASoC Drivers for ADI AD1938 codec
Date: Mon, 13 Jul 2009 10:15:38 +0100	[thread overview]
Message-ID: <20090713091538.GA6987@rakim.wolfsonmicro.main> (raw)
In-Reply-To: <3c17e3570907130112i128dd0f2o4673200de3125d5d@mail.gmail.com>

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.

  reply	other threads:[~2009-07-13  9:15 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-19  9:28 [PATCH] New ASoC Drivers for ADI AD1938 codec Barry Song
2009-06-19  9:35 ` Liam Girdwood
2009-06-19  9:35   ` Liam Girdwood
2009-06-19  9:41   ` Liam Girdwood
2009-06-19  9:41     ` Liam Girdwood
2009-06-19 10:47 ` Mark Brown
2009-06-19 10:47   ` Mark Brown
2009-06-19 11:05   ` Mike Frysinger
2009-06-19 11:05     ` Mike Frysinger
2009-06-19 11:13     ` Mark Brown
2009-06-19 11:13       ` Mark Brown
2009-06-19 11:21       ` Mike Frysinger
2009-06-19 11:21         ` Mike Frysinger
2009-06-19 11:56         ` Mark Brown
2009-06-19 11:56           ` Mark Brown
2009-06-20 23:15       ` Robin Getz
2009-06-20 23:15         ` [alsa-devel] " Robin Getz
2009-06-21  0:13         ` Mark Brown
2009-06-21  0:13           ` [alsa-devel] " Mark Brown
2009-06-22  3:08   ` 宋宝华
2009-06-22 10:57     ` Mark Brown
2009-06-22 10:57       ` Mark Brown
2009-06-22 13:00       ` 宋宝华
2009-06-22 13:11         ` Mark Brown
2009-06-22 13:11           ` Mark Brown
2009-07-13  8:12   ` 宋宝华
2009-07-13  9:15     ` Mark Brown [this message]
2009-07-13  9:15       ` Mark Brown
  -- strict thread matches above, loose matches on Subject: below --
2009-06-19  5:58 Barry Song
2009-06-19  6:44 ` Mike Frysinger

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20090713091538.GA6987@rakim.wolfsonmicro.main \
    --to=broonie@opensource.wolfsonmicro.com \
    --cc=21cnbao@gmail.com \
    --cc=alsa-devel@alsa-project.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=lrg@slimlogic.co.uk \
    --cc=vapier.adi@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.