Re: [RFC][PATCH] gpiolib: add irq_wake (power-management) sysfs file

[Kevin Hilman <khilman@ti.com>]

Patrick Combes <p-combes@ti.com> writes:

> From: Hugo Dupras <h-dupras@ti.com>
>
> 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@ti.com>
> Signed-off-by: Patrick Combes <p-combes@ti.com>

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@lists.infradead.org where there are
lots of GPIOlib users who might be interested in this, and also copy
LKML (linux-kernel@vger.kernel.org)

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@secretlab.ca>
S:	Maintained
T:	git git://git.secretlab.ca/git/linux-2.6.git
F:	Documentation/gpio.txt
F:	drivers/gpio/
F:	include/linux/gpio*