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path: root/drivers/gpio/gpio-zynqmp-modepin.c
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2021-09-23gpio: modepin: Add driver support for modepin GPIO controllerPiyush Mehta1-0/+162
This patch adds driver support for the zynqmp modepin GPIO controller. GPIO modepin driver set and get the value and status of the PS_MODE pin, based on device-tree pin configuration. These four mode pins are configurable as input/output. The mode pin has a control register, which have lower four-bits [0:3] are configurable as input/output, next four-bits can be used for reading the data as input[4:7], and next setting the output pin state output[8:11]. By default value of mode pin register is 0. Signed-off-by: Piyush Mehta <piyush.mehta@xilinx.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>