From 7ea456436ff6563b6cf89d3254ae76a8ceab499b Mon Sep 17 00:00:00 2001 From: Alexey Charkov Date: Tue, 29 Apr 2014 23:42:00 +0400 Subject: 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 Acked-by: Tony Prisk Signed-off-by: Linus Walleij --- drivers/pinctrl/vt8500/pinctrl-wmt.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/drivers/pinctrl/vt8500/pinctrl-wmt.c b/drivers/pinctrl/vt8500/pinctrl-wmt.c index 9802b67040cc..2c61281bebd7 100644 --- a/drivers/pinctrl/vt8500/pinctrl-wmt.c +++ b/drivers/pinctrl/vt8500/pinctrl-wmt.c @@ -523,17 +523,6 @@ static int wmt_gpio_get_direction(struct gpio_chip *chip, unsigned offset) return GPIOF_DIR_IN; } -static int wmt_gpio_direction_input(struct gpio_chip *chip, unsigned offset) -{ - return pinctrl_gpio_direction_input(chip->base + offset); -} - -static int wmt_gpio_direction_output(struct gpio_chip *chip, unsigned offset, - int value) -{ - return pinctrl_gpio_direction_output(chip->base + offset); -} - static int wmt_gpio_get_value(struct gpio_chip *chip, unsigned offset) { struct wmt_pinctrl_data *data = dev_get_drvdata(chip->dev); @@ -568,6 +557,18 @@ static void wmt_gpio_set_value(struct gpio_chip *chip, unsigned offset, wmt_clearbits(data, reg_data_out, BIT(bit)); } +static int wmt_gpio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_gpio_direction_input(chip->base + offset); +} + +static int wmt_gpio_direction_output(struct gpio_chip *chip, unsigned offset, + int value) +{ + wmt_gpio_set_value(chip, offset, value); + return pinctrl_gpio_direction_output(chip->base + offset); +} + static struct gpio_chip wmt_gpio_chip = { .label = "gpio-wmt", .owner = THIS_MODULE, -- cgit v1.2.3