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2017-01-26gpio: Add a driver for Cortina Systems Gemini GPIOLinus Walleij1-0/+236
This is a heavy edit/rewrite of the GPIO driver for the Gemini SoC from arch/arm/mach-gemini/gpio.c. This rewrite uses all the best-in-class helper like generic GPIO and GPIOLIB_IRQCHIP and has been tested on ITian Square One Gemini-based NAS/router. Cc: Janos Laube <janos.dev@gmail.com> Cc: Paulius Zaleckas <paulius.zaleckas@gmail.com> Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>