On Tue, Apr 04, 2017 at 06:56:30AM -0700, Tony Lindgren wrote: > * Mark Brown <broonie@xxxxxxxxxx> [170404 05:22]: > > It is sadly far too common for people to implement interrupt controllers > > that only do edge triggers, I've no idea why even on what are supposed > > to be relatively high end SoCs. It seems to be a hardware designer > > thing, AFAICT they think for something to be useful it needs to be a bit > > more complicated. > For edge only GPIO controllers handling level interrupts might be > somewhat fixable in software. The GPIO controller could have a loop > reading of the GPIO line status in the interrupt handler and comparing > it to the configured triggering. Yeah, it's doable if annoying.
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