diff options
| author | Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2020-04-17 21:33:48 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2020-04-28 13:00:46 +0300 |
| commit | ef1d0bce38cf1b4293afe6088dbe9524bc5d434f (patch) | |
| tree | 4260ecebe8de77d3e5f5ffef5cb36640198bca2c /drivers/pinctrl/meson | |
| parent | 4e3ec9e407ad5058003309072b37111f7b8c900a (diff) | |
| download | linux-ef1d0bce38cf1b4293afe6088dbe9524bc5d434f.tar.xz | |
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 <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20200417183349.1283092-2-martin.blumenstingl@googlemail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/meson')
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson.c | 13 |
1 files changed, 13 insertions, 0 deletions
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; |