From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Jarkko Nikula <jhnikula@gmail.com>
Cc: alsa-devel@alsa-project.org, Liam Girdwood <lrg@ti.com>
Subject: Re: [PATCH for 2.6.40] ASoC: Fix power down for widgetless per-card DAPM context case
Date: Thu, 26 May 2011 23:08:33 +0800 [thread overview]
Message-ID: <20110526150832.GA17148@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <1306416738-8298-1-git-send-email-jhnikula@gmail.com>
On Thu, May 26, 2011 at 04:32:18PM +0300, Jarkko Nikula wrote:
> Commit 52ba67b ("ASoC: Force all DAPM contexts into the same bias state")
> powers up all the DAPM contexts in a card if any DAPM context becomes
> active. Unfortunately power down newer happens if per-card DAPM context
> doesn't have any widgets.
>
> Reason for this is that power state of per-card DAPM context without
> widgets is never cleared and thus all the DAPM contexts remain permanently
> active. Test for widgetless calling DAPM context in dapm_power_widgets()
> doesn't work for per-card DAPM context since power change is never
> originating from widgetless per-card DAPM context.
Applied, thanks, though this is a bit of a band aid as we're currently
still allowing widgetless CODECs.
prev parent reply other threads:[~2011-05-26 15:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-26 13:32 [PATCH for 2.6.40] ASoC: Fix power down for widgetless per-card DAPM context case Jarkko Nikula
2011-05-26 14:38 ` Liam Girdwood
2011-05-26 15:08 ` Mark Brown [this message]
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