mxc: emulate GPIO interrupt on both-edges

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MXC GPIO controller does not support generation of interrupts on both
edges. Emulate this mode in software by reconfiguring the irq trigger
polarity on each interrupt. This follows an example of
drivers/mfd/asic3.c.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

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Guennadi Liakhovetski 2009-03-12 12:46:41 +01:00 • committed by Sascha Hauer

parent fde364742a

commit 910862ec09

2 changed files with 49 additions and 1 deletions

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49

arch/arm/plat-mxc/gpio.c

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1

arch/arm/plat-mxc/include/mach/gpio.h

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