linux-kernel - Re: [PATCH 04/11] MFD: twl4030-audio: Add DT support

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Date:	Wed, 08 Aug 2012 17:16:58 +0300
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
CC:	Samuel Ortiz <sameo@...ux.intel.com>, Liam Girdwood <lrg@...com>,
	Tony Lindgren <tony@...mide.com>,
	Dmitry Torokhov <dtor@...l.ru>, alsa-devel@...a-project.org,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org,
	Benoit Cousson <b-cousson@...com>
Subject: Re: [PATCH 04/11] MFD: twl4030-audio: Add DT support

On 08/08/2012 04:52 PM, Mark Brown wrote:
>> The hs_extmute is used for reducing pop noise on the headset. The sequence is
>> described in the TRM and it need to be done within the codec driver since it
>> is within the sequence.
> 
> Is the point it's at in the sequence the end?

On both ends :o
On HS enable: the extmute has to be enabled, run the power on sequence for the
HS, wait for ramp, disable the HS extmute.

On stop: enable the extmute, run the sequence, wait for ramp, release the extmute.

> We can always add a patch stubbing it out as part of the series, or in a
> branch in the OF tree that we can pull in.

If you are OK with the hassle I can add a patch to the series for
include/linux/of.h to handle this.

-- 
Péter
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