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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>
This commit is contained in:
Aaron Sierra 2015-03-31 10:11:47 -05:00 committed by Linus Walleij
parent afeb7b45e9
commit 62e08f25bd
1 changed files with 6 additions and 0 deletions
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6
drivers/gpio/gpio-ich.c
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@ -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;