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由 Herbert Valerio Riedel 提交于
Having a both-edge sensitive irq trigger type is required for the generic gpio-keys input driver; alas the ep93xx does not support both-edge gpio triggers in hardware, so this patch implements them by switching edge polarity on each triggered interrupt. This is the same approach as taken by the Orion SoC both-edge gpio irq support implementation. Signed-off-by: NHerbert Valerio Riedel <hvr@gnu.org> Acked-by: NLennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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