mfd: Add GPIO pin configuration support for WM8350
The WM8350 provides a number of user-configurable pins providing access to various signals generated by the functions on the chip. These are referred to as GPIO pins in the device documentation but in Linux terms they are more general than that, providing configuration of alternate functions. This patch implements support for selecting the alternate functions for these pins. They can also be used as GPIOs in the normal Linux sense - a subsequent patch will add support for doing so. This code was all written by Liam Girdwood and has had minor updates and rearrangements by Mark Brown. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: NSamuel Ortiz <sameo@openedhand.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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drivers/mfd/wm8350-gpio.c
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