diff options
Diffstat (limited to 'arch/arm/plat-samsung')
| -rw-r--r-- | arch/arm/plat-samsung/gpio.c | 8 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/gpio-core.h | 11 |
2 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/gpio.c b/arch/arm/plat-samsung/gpio.c index b83a83351ce..7743c4b8b2f 100644 --- a/arch/arm/plat-samsung/gpio.c +++ b/arch/arm/plat-samsung/gpio.c @@ -157,3 +157,11 @@ __init void s3c_gpiolib_add(struct s3c_gpio_chip *chip) if (ret >= 0) s3c_gpiolib_track(chip); } + +int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset) +{ + struct s3c_gpio_chip *s3c_chip = container_of(chip, + struct s3c_gpio_chip, chip); + + return s3c_chip->irq_base + offset; +} diff --git a/arch/arm/plat-samsung/include/plat/gpio-core.h b/arch/arm/plat-samsung/include/plat/gpio-core.h index c22c27ca675..13a22b8861e 100644 --- a/arch/arm/plat-samsung/include/plat/gpio-core.h +++ b/arch/arm/plat-samsung/include/plat/gpio-core.h @@ -122,6 +122,17 @@ extern void samsung_gpiolib_add_4bit2_chips(struct s3c_gpio_chip *chip, extern void samsung_gpiolib_add_4bit(struct s3c_gpio_chip *chip); extern void samsung_gpiolib_add_4bit2(struct s3c_gpio_chip *chip); + +/** + * samsung_gpiolib_to_irq - convert gpio pin to irq number + * @chip: The gpio chip that the pin belongs to. + * @offset: The offset of the pin in the chip. + * + * This helper returns the irq number calculated from the chip->irq_base and + * the provided offset. + */ +extern int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset); + /* exported for core SoC support to change */ extern struct s3c_gpio_cfg s3c24xx_gpiocfg_default; |