This sets the direction of the gpio once when it's requested,
and uses the spinlock-safe gpio_set_state() to change the
state.
Signed-off-by: NHeikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: NRhyland Klein <rklein@nvidia.com>
Reviewed-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>