wolfgang at openmoko.com
Thu Aug 28 06:31:43 CEST 2008
from a driver perspective, do you like our accelerometer chips? (ST
Are you aware of other accelerometer chips with better Linux mainline
support, or generally better?
On Aug 26, 2008, at 11:57 PM, Andy Green wrote:
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> Somebody in the thread at some point said:
> | It seems like the accelerometers have the following:
> | sensitive to losing an edge trigger
> We just suspect it, nobody showed it yet... it would probably be a bug
> in the driver handling or s3c stuff rather than accelerometer
> | occur at a periodic rate
> | access conflicts with other drivers so should be done outside of irq
> I have a nice patch coming that just does it bitbang the whole way
> IRQs off as locking throughout.
> | Does it make sense to just turn off the irq and have the driver
> use a
> | delayed work queue to poll at a given rate?
> Interrupts are at least somewhat synchronized to the source, I think
> will suffer from dropped samples otherwise. But, at some point we
> to take more radical measures if we don't solve it...
> - -Andy
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