iio: gyro: itg3200: add suspend/resume support.

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Unless we put the device to sleep when not it use, it wastes
6mA.

If the device is asleep on probe, the 'id' register
sometimes mis-reads - so reset first.  If the device responds
at all a command sent to the address, it is almost certainly
the correct device already.

Acked-by: Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: NeilBrown <neil@brown.name>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

...

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NeilBrown 2015-02-24 13:24:41 +11:00 • committed by Jonathan Cameron

parent d1bd4867b0

commit 60d3e3bbd5

1 changed files with 25 additions and 4 deletions

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drivers/iio/gyro/itg3200_core.c

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