From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sat, 5 Feb 2011 10:41:55 +0000 (+0000)
Subject: ALSA: AACI: allow writes to MAINCR to take effect
X-Git-Tag: v2.6.38-rc4~1^2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c289385b84d136089b8a1149321ebffa5193595;p=pandora-kernel.git

ALSA: AACI: allow writes to MAINCR to take effect

The AACI TRM requires the MAINCR enable bit to be held zero for two
bitclk cycles plus three apb_pclk cycles.  Use a delay of 1us to
ensure this.

Ensure that writes to MAINCR to change the addressed codec only happen
when required, and that they take effect in a similar manner to the
above, otherwise we seem to occasionally have stuck slot busy bits.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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