gpio: Add gpio latch driver
This driver implements a GPIO multiplexer based on latches connected to other GPIOs. A set of data GPIOs is connected to the data input of multiple latches. The clock input of each latch is driven by another set of GPIOs. With two 8-bit latches 10 GPIOs can be multiplexed into 16 GPIOs. GPOs might be a better term as in fact the multiplexed pins are output only. Signed-off-by:Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by:
Serge Semin <fancer.lancer@gmail.com> Reviewed-by:
Linus Walleij <linus.walleij@linaro.org> [Bartosz: fixed the strange of_device_id formatting] Signed-off-by:
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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drivers/gpio/gpio-latch.c
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