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authorAlexey Charkov <alchark@gmail.com>2014-04-29 23:42:00 +0400
committerLinus Walleij <linus.walleij@linaro.org>2014-05-23 01:46:10 +0400
commit7ea456436ff6563b6cf89d3254ae76a8ceab499b (patch)
tree78087b25ad0a6f22eeaab36bccba00d473011ebb /drivers/pinctrl/vt8500
parent4b660a7f5c8099d88d1a43d8ae138965112592c7 (diff)
downloadlinux-7ea456436ff6563b6cf89d3254ae76a8ceab499b.tar.xz
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>
Diffstat (limited to 'drivers/pinctrl/vt8500')
-rw-r--r--drivers/pinctrl/vt8500/pinctrl-wmt.c23
1 files 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,