From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: "Péter Ujfalusi" <peter.ujfalusi@ti.com>
Cc: alsa-devel@alsa-project.org, Liam Girdwood <lrg@ti.com>,
Misael Lopez Cruz <misael.lopez@ti.com>
Subject: Re: [PATCH] ASoC: twl6040: Workaround for headset DC offset caused pop noise
Date: Wed, 12 Oct 2011 10:46:25 +0100 [thread overview]
Message-ID: <20111012094625.GA3647@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <2135466.UdidpbexSR@barack>
On Wed, Oct 12, 2011 at 11:55:15AM +0300, Péter Ujfalusi wrote:
> I can not move the HS DAC power on/off to be handled by a supply widget...
> Refcounting in a supply widget will not work for the power down, since the
> supply widget will be turned off after the DAC widget. At time when the DAC
> receives the PMD event the attached supply is still on.
> I can update the commit message to explicitly say that we need to turn on both
> HS DAC at the same time, and we need to turn tem off at the same time.
I still don't understand what the problem is. If nothing else you can
do random register writes from an event on a supply widget...
next prev parent reply other threads:[~2011-10-12 9:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-11 11:00 [PATCH] ASoC: twl6040: Workaround for headset DC offset caused pop noise Peter Ujfalusi
2011-10-11 13:29 ` Mark Brown
2011-10-12 8:18 ` Péter Ujfalusi
2011-10-12 8:55 ` Péter Ujfalusi
2011-10-12 9:46 ` Mark Brown [this message]
2011-10-12 10:45 ` Péter Ujfalusi
2011-10-12 10:48 ` Mark Brown
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