From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Peter Hsiang <Peter.Hsiang@maxim-ic.com>
Cc: Axel Lin <axel.lin@gmail.com>, Liam Girdwood <lrg@ti.com>,
"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] ASoC: max98095: Convert codec->hw_write to snd_soc_write
Date: Fri, 14 Oct 2011 20:03:42 +0100 [thread overview]
Message-ID: <20111014190342.GA2931@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <B2150E1E4418E1438554A300EA5040E40DDFD2E54E@ITSVLEX06.it.maxim-ic.internal>
On Fri, Oct 14, 2011 at 10:40:58AM -0700, Peter Hsiang wrote:
> On Fri, Oct 14, 2011, Axel Lin wrote:
> > codec->hw_write is broken now, convert codec->hw_write to
> > snd_soc_write.
> The hardware has 2 banks of registers sharing a section in I2C register space.
> The 1st bank is the primary one and is cached.
> The 2nd bank is for loading coefficients only and they do not need cache.
> These coefficients registers are therefore direct writes.
> Changing this to a cached write will overwrite the cache.
Writes to the cached region should be done within a cache_bypass flag to
deal with this.
prev parent reply other threads:[~2011-10-14 19:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-14 3:43 [PATCH] ASoC: max98095: Convert codec->hw_write to snd_soc_write Axel Lin
2011-10-14 3:43 ` Axel Lin
2011-10-14 17:40 ` Peter Hsiang
2011-10-14 17:40 ` Peter Hsiang
2011-10-14 19:03 ` Mark Brown [this message]
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