shadeslayer

From a2f5c540b903143e5a0b025cd2f81a69ad809072 Mon Sep 17 00:00:00 2001
From: Arun Raghavan <arun.raghavan@collabora.co.uk>
Date: Tue, 10 Jul 2012 08:55:58 +0530
Subject: [PATCH] apple-gmux: Restore switch registers on suspend/resume

After suspend and resume, the values of these registers seem to change
from what they were at suspend time, potentially preventing the actual
output lines from being enabled post-resume. This saves relevant state
at suspend and restores it when resumed.

shadeslayer

L1 cache reference                  0.5 ns
Branch mispredict                   5 ns
L2 cache reference                  7 ns
Mutex lock/unlock                   25 ns
Main memory reference               100 ns
Compress 1K bytes with Zippy        3,000 ns
Send 2K bytes over 1 Gbps network   20,000 ns
Read 1 MB sequentially from memory  250,000 ns
Round trip within same datacenter   500,000 ns
Disk seek                           10,000,000 ns