tree b6ce41ea7ece7c0833fd42120a14e96455b1fd5f
parent 8e5fb37b9873eacb2381f2931d252b6db6e2cb16
author Roland Stigge <stigge@antcom.de> 1330984871 +0100
committer Grant Likely <grant.likely@secretlab.ca> 1331573130 -0600

GPIO: LPC32xx: Add output reading to GPO P3

The chip offers the function to detect the current state of output of the GPO
P3 pins. Useful for reading GPIO output state in Linux' GPIO API, e.g. via
sysfs.

Please note that this only reads back the currently programmed output state,
not the actual electrical level in terms of a GPI function. Finally, GPO3 is
still just an output.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>