[PATCH 1/2] gpio: add pin biasing and drive mode to gpiolib
linus.walleij at linaro.org
Wed Apr 20 08:32:35 EDT 2011
2011/4/19 Kyungmin Park <kmpark at infradead.org>:
> One more consideration, not mentioned previous time, is that pin
> configuration for power down mode.
> Samsung SoCs has retention GPIO configurations at sleep (suspend)
> mode. and restore it at resume time.
> it's need to reduce power and proper operation after suspend.
Isn't this supposed to be handled by runtime_pm hooks inside
your GPIO driver rather than by someone else talking to
the GPIO driver trying to spool/unspool the state from the
outside in some other place?
Or am I getting things backwards now...?
More information about the linux-arm-kernel