gpio: arizona: Correct handling for reading input GPIOs
The GPIO register is cached since all the configuration resides within it, however, this means for input GPIOs the driver will not return the actual state but the last value written to the register cache. To correct this in the case of reading an input GPIO resume the CODEC and drop the cache for the input register to ensure an actual hardware read takes place. Signed-off-by:Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org>
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