FSO wifi power control

[Andy Green]

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Somebody in the thread at some point said:
| Am Donnerstag 07 August 2008 22:59:46 schrieb Angus Ainslie:
|> Is there any way to control whether wifi is on or off from the
command line
|> in FSO.
|
| There is a WiFi object under the /org/freesmartphone/Device hierarchy
which
| exports the PowerControl API.

But what does that actually do... it doesn't turn the thing off.  I
guess it sends some suspend command somehow to the firmware.

This /sys thing I mention uses a pin on the module to "turn it off" to
the point it does not react as an SDIO device even any more.  Then when
we deassert that, we need to scan it again.  In addition, this patch
makes it boot "turned off".

- -Andy

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