pinctrl: intel: Implement intel_gpio_get_direction callback
Allows querying GPIO direction from the pad config register. If the pad is not in GPIO mode, return an error. Signed-off-by: NJavier Arteaga <javier@emutex.com> Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: NMika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
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