tree 8776ec8a8887ae144f07de5b94fd7afa113c84bd
parent 72c7901ef00925c6d0cc7ab69183a684908303bc
author Peter Ujfalusi <peter.ujfalusi@ti.com> 1355996651 +0100
committer Linus Walleij <linus.walleij@linaro.org> 1358419692 +0100

gpio: twl4030: Cache the direction and output states in private data

Use more coherent locking in the driver. Use bitfield to store the GPIO
direction and if the pin is configured as output store the status also in a
bitfiled.
In this way we can just look at these bitfields when we need information
about the pin status and only reach out to the chip when it is needed.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>