linux-kernel - Re: [PATCH 3/3 v2] sound/soc/lapis: add platform driver for ML7213 IOH I2S

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Message-ID: <20111227173326.GC22970@opensource.wolfsonmicro.com>
Date:	Tue, 27 Dec 2011 17:33:27 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Tomoya MORINAGA <tomoya.rohm@...il.com>
Cc:	Liam Girdwood <lrg@...com>, Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>,
	Mike Frysinger <vapier@...too.org>,
	Daniel Mack <zonque@...il.com>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org, qi.wang@...el.com,
	yong.y.wang@...el.com, joel.clark@...el.com, kok.howg.ewe@...el.com
Subject: Re: [PATCH 3/3 v2] sound/soc/lapis: add platform driver for ML7213
 IOH I2S

On Tue, Dec 27, 2011 at 10:25:25AM +0900, Tomoya MORINAGA wrote:
> 2011/12/26 Mark Brown <broonie@...nsource.wolfsonmicro.com>:

> > So you're just talking about standard underflows if the application
> > can't keep up?

> No. not only underflow but overflow.

Same difference.

> > There's *no* reason for your driver to do anything about
> > this, it's a really basic thing that affects all audio hardware.  Just
> > write a driver for the hardware.

> In case driver layer doesn't have the function,
> which part works for the under/overflow ? Application ? or nothing ?

Your driver has to accurately describe what the hardware supports and
then the application layer is responsible for making sure it keeps up
with things.
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