Re: Enabling DAPM for Dummy DAIs

From: "Sridharan, Ranjani" <ranjani.sridharan@intel.com>
To: "broonie@kernel.org" <broonie@kernel.org>
Cc: "tiwai@suse.de" <tiwai@suse.de>,
	"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
	"bard.liao@linux.intel.com" <bard.liao@linux.intel.com>,
	"pierre-louis.bossart@linux.intel.com"
	<pierre-louis.bossart@linux.intel.com>
Subject: Re: Enabling DAPM for Dummy DAIs
Date: Mon, 17 Aug 2020 17:45:59 +0000	[thread overview]
Message-ID: <1a8e6e8872692ea88bd7905ed5ae0e8e2a8c0414.camel@intel.com> (raw)
In-Reply-To: <20200814123712.GB4783@sirena.org.uk>

On Fri, 2020-08-14 at 13:37 +0100, Mark Brown wrote:
> On Thu, Aug 13, 2020 at 05:21:40PM +0000, Sridharan, Ranjani wrote:
> > Hi Mark/Takashi,
> 
> Please fix your mail client to word wrap within paragraphs at
> something
> substantially less than 80 columns.  Doing this makes your messages
> much
> easier to read and reply to.
> 
> > What would your recommendation be to get around this problem in
> > SOF? Thanks for your help.
> 
> Actively using the dummy CODEC at runtime isn't a great idea at the
> best
> of times, things would be a lot easier if you used something with
> actual
> audio paths for testing - as far as I can see the issue is that
> you've
> told the system that there's nothing connected which is reasonably
> being
> interpreted as there being no need to power anything on.  If you
> intend
> this to represent an actual connection it would be better to use a
> simple CODEC with no software control rather than something that
> explicitly means there is nothing connected.
Thanks, Mark. But I am still confused by what you mean by a simple
codec here. Would this simple codec be registered by the SOF platform
driver?

Thanks,
Ranjani