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| author | Alexey Charkov <alchark@gmail.com> | 2014-04-29 23:42:00 +0400 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-05-22 23:46:10 +0200 |
| commit | 7ea456436ff6563b6cf89d3254ae76a8ceab499b (patch) | |
| tree | 78087b25ad0a6f22eeaab36bccba00d473011ebb /drivers | |
| parent | 4b660a7f5c8099d88d1a43d8ae138965112592c7 (diff) | |
| download | linux-7ea456436ff6563b6cf89d3254ae76a8ceab499b.tar.gz linux-7ea456436ff6563b6cf89d3254ae76a8ceab499b.tar.bz2 linux-7ea456436ff6563b6cf89d3254ae76a8ceab499b.zip | |
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')
| -rw-r--r-- | drivers/pinctrl/vt8500/pinctrl-wmt.c | 23 |
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, |