ASoC: Support AC97 link off by default on WM9712
authorMarek Vasut <marek.vasut@gmail.com>
Thu, 14 May 2009 19:52:46 +0000 (20:52 +0100)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Thu, 14 May 2009 19:52:46 +0000 (20:52 +0100)
commit63c26baa2aa624b023892d66ed696525fc787560
tree1430f0c2f124b46cadb3edd898202e7c5a9e756e
parentc13cb78ace34ef9e4cfa2a2fae9a7772d90d6ace
ASoC: Support AC97 link off by default on WM9712

The WM9712 can be configured by resistor strapping GPIO4 to behave like
the WM9713 and default to leaving the AC97 link disabled after cold
reset until a warm reset occurs.  In this configuration we need to issue
a warm reset after cold to bring the link up so do so.  The warm reset
will be harmless on systems that don't need it.

[Changelog rewritten to document the reasoning. -- broonie]

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
sound/soc/codecs/wm9712.c