From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Thu, 27 Aug 2009 07:35:50 +0000 (+0000)
Subject: powerpc/qe: Implement qe_alive_during_sleep() helper function
X-Git-Tag: v2.6.32-rc1~703^2~219
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ed24157ede901608e00f28b4897398a373e1e926;p=pandora-kernel.git

powerpc/qe: Implement qe_alive_during_sleep() helper function

In some CPUs (i.e. MPC8569) QE shuts down completely during sleep,
drivers may want to know that to reinitialize registers and buffer
descriptors.

This patch implements qe_alive_during_sleep() helper function, so far
it just checks if MPC8569-compatible power management controller is
present, which is a sign that QE turns off during sleep.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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