Patrick Combes <p-combes@xxxxxx> writes:
> From: Hugo Dupras <h-dupras@xxxxxx>
>
> By calling poll() on the /sys/class/gpio/gpioN/value sysfs file, usermode
> application can take benefit of gpio interrupts.
> However, depending on the power state reached, this interrupt may not wake-up
> the CPU.
> This patch creates a new sysfs file /sys/class/gpio/gpioN/irq_wake to enable
> usermode application to set the wake properties of a gpio IRQ.
> This option can be set or not for each gpio to preserve power consumption (e.g
> embedded systems).
>
> Signed-off-by: Hugo Dupras <h-dupras@xxxxxx>
> Signed-off-by: Patrick Combes <p-combes@xxxxxx>
Hello,
This is a change to the GPIO core but you only have the OMAP-specific
list here.
Please send this to the GPIO maintainer[1] and the lists.
Also, please copy linux-arm-kernel@xxxxxxxxxxxxxxxxxxx where there are
lots of GPIOlib users who might be interested in this, and also copy
LKML (linux-kernel@xxxxxxxxxxxxxxx)
Thanks,
Kevin
P.S. David Brownell passed away earlier this year, so I removed his
email from the to list: http://lkml.org/lkml/2011/6/6/32
[1] excerpt from MAINTAINERS file
GPIO SUBSYSTEM
M: Grant Likely <grant.likely@xxxxxxxxxxxx>
S: Maintained
T: git git://git.secretlab.ca/git/linux-2.6.git
F: Documentation/gpio.txt
F: drivers/gpio/
F: include/linux/gpio*
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