[2008.testing] GPS after resume

[Vladimir Koutny]

> i was thinking about this the other day. the gps has it's own
> processor, correct, and can act independently of the cpu? i'm
> wondering if it's possible for the gps to keep it's fix while the main
> cpu is in suspend. power usage will be higher than a full suspend, but
> the phone will have a fix as soon as it resumes. is there any reason
> why this can't happen?

I wrote attached patch for this few days ago - it is against mwester's stable
kernel so probably still needs some tweaks for 2.6.28 series.

Simply 'echo 1 > /sys/bus/i2c/devices/0-0073/neo1973-pm-gps.0/keep_on_in_suspend'
and it will stay alive during suspend (echo 0 to turn it off - this is also the
default).

It also fixes a bug with re-enabling GPS on resume when it was on before
(keep_on_in_suspend=0).

I'm going to split this into 2 patches and send it to devel soon.

vlado

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