gpio: support gpio set/get pull status
authorCaesar Wang <wxt@rock-chips.com>
Wed, 25 May 2016 10:48:45 +0000 (18:48 +0800)
committerCaesar Wang <wxt@rock-chips.com>
Fri, 27 May 2016 01:39:56 +0000 (09:39 +0800)
commit195889829e3f3fc4eabb3297b3d686daf14af7f5
tree0ed6d6aa607ae30ef5a7f5fc582a981764393b53
parente141aa0357fd4977ba874f4f86874e2cadc73498
gpio: support gpio set/get pull status

On some platform gpio can set/get pull status when input, add these
function so we can set/get gpio pull status when need it. And they are
optional function.
drivers/gpio/gpio.c
include/drivers/gpio.h