[PATCH] motion-sensors-irq-spi.patch

[Andy Green]

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Somebody in the thread at some point said:
> Andy, Werner -
> 
> today Tony and I wondered whether Motion Sensor activity can wakeup the
> CPU from deep sleep.
> Right now we believe wakeup from deep sleep CPU can be caused by:
> 
> 1. wifi
> 2. GSM
> 3. usb
> 
> Anything else? We think bluetooth, motion sensors cannot.

I didn't look at this mechanism until now, but it appears from the
Samsung datasheet that any of the EINT[15:0] interrupts can wake from
what they call "SLEEP", ie, CPU powered down.

One of the motion sensors interrupts maps to this range (the "top" one
on GPF0 --> EINT[0]) and one doesn't (the bottom one on GPG8 -->
EINT[*16*]).

If I understood it then you could probably do something with that if the
idea is shaking it awake or so on.

- -Andy
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