greybus: gpio: Add runtime_pm suppourt

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Add runtime pm support for the gpio driver.
Since there is no remote wakeup support, the
module will not suspend as long as a gpio is
requested.

Maybe an optimization could be made, to allow suspend
if all the requested gpios are in output mode, since
the bridge should maintain the state of the gpio
during suspend.

Testing Done: using the test board, let the
gpbrige enter standby and request a gpio.

Signed-off-by: Axel Haslam <haslam_axel@projectara.com>
Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>

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Axel Haslam 2016-07-14 15:13:00 -05:00 • committed by Alex Elder

parent 22b8708725

commit 993dc992f2

1 changed files with 25 additions and 5 deletions

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drivers/staging/greybus/gpio.c

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