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From: Liam Girdwood <lrg@slimlogic.co.uk>
To: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Linux-ALSA <alsa-devel@alsa-project.org>,
	Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: Re: [PATCH] ASoC: ak4642: Add ak4642_fill_cache function
Date: Fri, 25 Jun 2010 11:47:33 +0100	[thread overview]
Message-ID: <1277462853.3123.13.camel@odin> (raw)
In-Reply-To: <w3pvd97k0nb.wl%kuninori.morimoto.gx@renesas.com>

On Fri, 2010-06-25 at 16:54 +0900, Kuninori Morimoto wrote:
> ak4642 driver is used for ak4642/ak4643.
> So, reading real register value is better than using constant value.
> 

To be honest, this is only really useful when the codec has some
volatile registers.  Forcing I2C reads for all IO will just slow down
the driver. 

Does this codec have volatile registers ?

Thanks

Liam
-- 
Freelance Developer, SlimLogic Ltd
ASoC and Voltage Regulator Maintainer.
http://www.slimlogic.co.uk

  reply	other threads:[~2010-06-25 10:47 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-25  7:54 [PATCH] ASoC: ak4642: Add ak4642_fill_cache function Kuninori Morimoto
2010-06-25 10:47 ` Liam Girdwood [this message]
2010-06-25 11:43 ` Mark Brown
2010-06-28  0:37   ` Kuninori Morimoto

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