diff options
| author | Jonas Gorski <jogo@openwrt.org> | 2015-10-11 17:34:15 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-10-16 22:11:16 +0200 |
| commit | c771c2f484857f3b1fc81d180485e96b7cb67c17 (patch) | |
| tree | 6ed5046cd43c58197051913f6351182a44a76af7 /drivers | |
| parent | 30cefeacec3e289c00128f28b831fb251650eea6 (diff) | |
gpiolib: provide generic request/free implementations
Provide generic request/free implementations that pinctrl aware gpio
drivers can use instead of open coding if they use a 1:1 pin to gpio
signal mapping.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 8f180775a4fa..8eba02db5608 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -15,6 +15,7 @@ #include <linux/acpi.h> #include <linux/gpio/driver.h> #include <linux/gpio/machine.h> +#include <linux/pinctrl/consumer.h> #include "gpiolib.h" @@ -745,6 +746,28 @@ static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip) {} #endif /* CONFIG_GPIOLIB_IRQCHIP */ +/** + * gpiochip_generic_request() - request the gpio function for a pin + * @chip: the gpiochip owning the GPIO + * @offset: the offset of the GPIO to request for GPIO function + */ +int gpiochip_generic_request(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_request_gpio(chip->base + offset); +} +EXPORT_SYMBOL_GPL(gpiochip_generic_request); + +/** + * gpiochip_generic_free() - free the gpio function from a pin + * @chip: the gpiochip to request the gpio function for + * @offset: the offset of the GPIO to free from GPIO function + */ +void gpiochip_generic_free(struct gpio_chip *chip, unsigned offset) +{ + pinctrl_free_gpio(chip->base + offset); +} +EXPORT_SYMBOL_GPL(gpiochip_generic_free); + #ifdef CONFIG_PINCTRL /** |