From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Barry Song <21cnbao@gmail.com>
Cc: uclinux-dist-devel@blackfin.uclinux.org, alsa-devel@alsa-project.org
Subject: Re: [PATCH 1/3] new ad1836 codec driver based on asoc
Date: Thu, 13 Aug 2009 10:46:33 +0100 [thread overview]
Message-ID: <20090813094633.GA21652@rakim.wolfsonmicro.main> (raw)
In-Reply-To: <3c17e3570908130237g34f34228v1d57d872dfba20ea@mail.gmail.com>
On Thu, Aug 13, 2009 at 05:37:09PM +0800, Barry Song wrote:
> If so, all codec drivers need to save setting then restore them when
> resume. The physical shutdown depends on boards great. If we get an
> individual programmable PMU/LDO to control the voltage input to this
> chip, I can shutdown power-input to codec physically and save the
> registers when suspend, then restore them when resume. If no this
> unit, should every codec driver handle this case?
Yes, every CODEC driver that supports suspend and resume needs to handle
this. Since the CODEC drivers generally use a register cache it's
normally just a case of writing the values in the cache back to the
device at the start of resume.
next prev parent reply other threads:[~2009-08-13 9:46 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-12 4:32 [PATCH 0/3] patch sequence adds analog devices ad1836 asoc support Barry Song
2009-08-12 4:32 ` [PATCH 1/3] new ad1836 codec driver based on asoc Barry Song
2009-08-12 4:32 ` [PATCH 2/3] add set_tdm_slot in tdm dai to define the relationship between audio channel and tdm slot Barry Song
2009-08-12 4:32 ` [PATCH 3/3] new board driver to connect bfin-5xx with ad1836 codec Barry Song
2009-08-12 16:10 ` Mark Brown
2009-08-13 4:19 ` Barry Song
2009-08-12 13:56 ` [PATCH 2/3] add set_tdm_slot in tdm dai to define the relationship between audio channel and tdm slot Mark Brown
2009-08-13 4:16 ` Barry Song
2009-08-12 13:46 ` [PATCH 1/3] new ad1836 codec driver based on asoc Mark Brown
2009-08-13 3:41 ` Barry Song
2009-08-13 9:08 ` Mark Brown
2009-08-13 9:22 ` [Uclinux-dist-devel] " Mike Frysinger
2009-08-13 9:34 ` Mike Frysinger
2009-08-13 9:37 ` Barry Song
2009-08-13 9:46 ` Mark Brown [this message]
2009-08-13 9:52 ` Barry Song
2009-08-13 10:00 ` Mark Brown
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