From ef1d0bce38cf1b4293afe6088dbe9524bc5d434f Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Fri, 17 Apr 2020 20:33:48 +0200 Subject: pinctrl: meson: implement the gpio_chip get_direction callback Implement the get_direction callback so we read the direction from the actual GPIO controller register. This is recommended by the gpio_chip kernel doc. Signed-off-by: Martin Blumenstingl Link: https://lore.kernel.org/r/20200417183349.1283092-2-martin.blumenstingl@googlemail.com Signed-off-by: Linus Walleij --- drivers/pinctrl/meson/pinctrl-meson.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/pinctrl/meson') diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c index bbc919bef2bf..291f3078e7c7 100644 --- a/drivers/pinctrl/meson/pinctrl-meson.c +++ b/drivers/pinctrl/meson/pinctrl-meson.c @@ -549,6 +549,18 @@ static const struct pinconf_ops meson_pinconf_ops = { .is_generic = true, }; +static int meson_gpio_get_direction(struct gpio_chip *chip, unsigned gpio) +{ + struct meson_pinctrl *pc = gpiochip_get_data(chip); + int ret; + + ret = meson_pinconf_get_output(pc, gpio); + if (ret < 0) + return ret; + + return ret ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN; +} + static int meson_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) { return meson_pinconf_set_output(gpiochip_get_data(chip), gpio, false); @@ -591,6 +603,7 @@ static int meson_gpiolib_register(struct meson_pinctrl *pc) pc->chip.parent = pc->dev; pc->chip.request = gpiochip_generic_request; pc->chip.free = gpiochip_generic_free; + pc->chip.get_direction = meson_gpio_get_direction; pc->chip.direction_input = meson_gpio_direction_input; pc->chip.direction_output = meson_gpio_direction_output; pc->chip.get = meson_gpio_get; -- cgit v1.2.3-59-g8ed1b