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pinctrl: vt8500: Ensure value reg is updated when setting direction
Current code only touches the direction register when setting direction to output, which breaks logic like echo high > /sys/class/gpio/gpio0/direction which is expected to also set the value. This patch also adds a call to update the value register when setting direction to output. Signed-off-by: Alexey Charkov <alchark@gmail.com> Acked-by: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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@ -523,17 +523,6 @@ static int wmt_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
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return GPIOF_DIR_IN;
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}
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static int wmt_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
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{
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return pinctrl_gpio_direction_input(chip->base + offset);
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}
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static int wmt_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
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int value)
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{
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return pinctrl_gpio_direction_output(chip->base + offset);
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}
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static int wmt_gpio_get_value(struct gpio_chip *chip, unsigned offset)
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{
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struct wmt_pinctrl_data *data = dev_get_drvdata(chip->dev);
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@ -568,6 +557,18 @@ static void wmt_gpio_set_value(struct gpio_chip *chip, unsigned offset,
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wmt_clearbits(data, reg_data_out, BIT(bit));
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}
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static int wmt_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
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{
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return pinctrl_gpio_direction_input(chip->base + offset);
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}
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static int wmt_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
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int value)
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{
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wmt_gpio_set_value(chip, offset, value);
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return pinctrl_gpio_direction_output(chip->base + offset);
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}
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static struct gpio_chip wmt_gpio_chip = {
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.label = "gpio-wmt",
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.owner = THIS_MODULE,
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