From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Mon, 29 Mar 2010 16:09:45 +0000 (+0100)
Subject: ASoC: Support second DC servo readback method for wm_hubs
X-Git-Tag: v2.6.34-rc4~29^2~1^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8437f7006b9cfa249791e2fd57596683d4561843;p=pandora-kernel.git

ASoC: Support second DC servo readback method for wm_hubs

More recent Wolfson hubs devices add the ability to read back the DC
servo calibration information from the register used to write offsets,
and later still ones remove the old readback registers. Add support
for the new scheme, and use it for WM8994 device revisions that
support it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
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