tree 52c591989e194f1ecb59923a28dc840451cb5825
parent 6530f1bec80370782db34fa33b686a2ac8810cc1
author Duncan Laurie <dlaurie@chromium.org> 1299981063 -0800
committer Duncan Laurie <dlaurie@chromium.org> 1299981063 -0800

Disable the 8042 MUX on our x86 devices.

The use of the mux can cause issues with some EC 8042 controllers and
result in loss of keyboard/trackpad between suspend/resume/reboot cycles.
We will never have more than keyboard+trackpad attached through the 8042
on our devices so using the mux is unnecessary.

BUG=chrome-os-partner:2726
TEST=manual verification that mux is not probed at boot:

Original:
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX0 port at 0x60,0x64 irq 12
serio: i8042 AUX1 port at 0x60,0x64 irq 12
serio: i8042 AUX2 port at 0x60,0x64 irq 12
serio: i8042 AUX3 port at 0x60,0x64 irq 12

New:
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12

Change-Id: I942ab86eb71941ab072ad6a17d15b067ca94439d

Review URL: http://codereview.chromium.org/6679031
(cherry picked from commit 4deda9c24f1deb015946c709d1d3d11f1c0e2325)

Review URL: http://codereview.chromium.org/6686028