mach-msm: Add msm_mpdecision

This currently only does the following thing:
Screen on -> CPU1 online
Screen off -> CPU1 offline

More to come.

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: small cleanup

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: add load based decision making

This now works like the mpdecision binary from QCOM.
CPU hotplugging/unplugging based on system load.

A sysfs interface will be built in with a later commit.

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: restructure locks, add delay

The new delay allows the CPU to come up before any other action is taken.
This prevents fast plugging and also ensures the CPU hotplug process
is really done, before trying to unplug it again (or plug it).

The new locks are more efficient, and only used if necessary.

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: pause if CPU is unplugged outside of mpdecision

This fixes cpu wars if something else tries to control the cpus.
default delay: 10000ms

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: change early_suspend_level to blank_screen

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: don't start immediately

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: show cpumask after up/down

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: always set the suspend var

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: remove up/down delay, our default delay is large enough

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: add email to (c)

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: fix foreign hotplug/unplug detection

Signed-off-by: showp1984 <showp1984@gmail.com>

Conflicts:

	arch/arm/mach-msm/msm_mpdecision.c
mach-msm: mpdecision: show how long the cpu was online

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: rename msm_mpdec_suspend to msm_mpdec_cpudata

Since this is being used for more than suspend stuff the old name
just isn't accurate anymore.

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: add sysfs interface

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: remove debug output

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: fix foreign cpu control detection

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: allow mpdecision to be disabled (sysfs)

This allows disabling/enabling of mpdecision over sysfs.

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: sysfs: check if cpu is offline before hotplugging it

Signed-off-by: showp1984 <showp1984@gmail.com>
mach-msm: mpdecision: don't turn off cpu1 if freq > idle

This fixes cpu1 being turned off though it is still working
with a high frequency. The idle_freq can be modified through sysfs.

Signed-off-by: showp1984 <showp1984@gmail.com>