tree 8569c6dd4cc215876156fa5b2721ad1a487b9c88
parent 22e3d63147c9608dc48ac6a6d9973eba8672efbe
author Marc Kleine-Budde <mkl@pengutronix.de> 1281488543 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1281542348 -0700

gpio: max730x: make pullups configurable via platformdata

The gpios on the max730x chips have support for internal pullups while in
input mode.

This patch adds support for configuring these pullups via platform data.
A new member ("input_pullup_active") to the platform data struct is
introduced.  A set bit in this variable activates the pullups while the
respective port is in input mode.  This is a compatible enhancement since
unset bits lead to disables pullups which was the default in the original
driver.

_Note_: the 4 lowest bits in "input_pullup_active" are unused because the
first 4 ports of the controller are not used, too.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>