diff options
| author | Aaron Sierra <asierra@xes-inc.com> | 2015-03-31 17:11:47 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-04-08 09:54:27 +0200 |
| commit | 62e08f25bd09b088f266ea6fc34d2f596d83c04e (patch) | |
| tree | 544ac1f99e0bcfc657891be5123f01171bc89177 /drivers | |
| parent | gpio: use (!foo) instead of (foo == NULL) (diff) | |
| download | linux-62e08f25bd09b088f266ea6fc34d2f596d83c04e.tar.xz linux-62e08f25bd09b088f266ea6fc34d2f596d83c04e.zip | |
gpio: ich: Implement get_direction function
Allow the kernel to query the driver for a GPIO's pin direction.
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/gpio-ich.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c index 7818cd1453ae..4ba7ed502131 100644 --- a/drivers/gpio/gpio-ich.c +++ b/drivers/gpio/gpio-ich.c @@ -173,6 +173,11 @@ static bool ichx_gpio_check_available(struct gpio_chip *gpio, unsigned nr) return !!(ichx_priv.use_gpio & (1 << (nr / 32))); } +static int ichx_gpio_get_direction(struct gpio_chip *gpio, unsigned nr) +{ + return ichx_read_bit(GPIO_IO_SEL, nr) ? GPIOF_DIR_IN : GPIOF_DIR_OUT; +} + static int ichx_gpio_direction_input(struct gpio_chip *gpio, unsigned nr) { /* @@ -286,6 +291,7 @@ static void ichx_gpiolib_setup(struct gpio_chip *chip) ichx_priv.desc->get : ichx_gpio_get; chip->set = ichx_gpio_set; + chip->get_direction = ichx_gpio_get_direction; chip->direction_input = ichx_gpio_direction_input; chip->direction_output = ichx_gpio_direction_output; chip->base = modparam_gpiobase; |