gpio: modepin: Add driver support for modepin GPIO controller

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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>

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Piyush Mehta 2021-09-22 19:23:19 +05:30 • committed by Bartosz Golaszewski

parent d7f4a65cdf

commit 7687a5b0ee

3 changed files with 175 additions and 0 deletions

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12

drivers/gpio/Kconfig

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1

drivers/gpio/Makefile

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162

drivers/gpio/gpio-zynqmp-modepin.c

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