From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: Re: Question about "trigger"
Date: Mon, 11 Apr 2011 06:50:49 -0700
Message-ID: <20110411135048.GD24973@opensource.wolfsonmicro.com>
References: <w3p1v1dw5lx.wl%kuninori.morimoto.gx@renesas.com>
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To: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Linux-ALSA <alsa-devel@alsa-project.org>, Magnus <magnus.damm@gmail.com>, Liam Girdwood <lrg@slimlogic.co.uk>
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On Fri, Apr 08, 2011 at 04:43:22PM +0900, Kuninori Morimoto wrote:

> # insmod snd-soc-ak4642.ko
> # insmod snd-soc-fsi-ak4642.ko
> #
> # aplay sound.wav
> # rmmod snd-soc-fsi-ak4642.ko

> I guess noone call soc_pcm_trigger(xx, STOP);
> who should control it ?

I wouldn't 100% rely on that being the case - if the driver is forcibly
removing itself from underneath the subsystem then it's not clear if
this is a useful thing to try to do.  I'd expect that this is something
the ALSA core should do if required.