diff options
Diffstat (limited to 'arch/arm/plat-samsung/include/plat/gpio-core.h')
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/gpio-core.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/include/plat/gpio-core.h b/arch/arm/plat-samsung/include/plat/gpio-core.h index e358c7da848..13a22b8861e 100644 --- a/arch/arm/plat-samsung/include/plat/gpio-core.h +++ b/arch/arm/plat-samsung/include/plat/gpio-core.h @@ -43,6 +43,8 @@ struct s3c_gpio_cfg; * struct s3c_gpio_chip - wrapper for specific implementation of gpio * @chip: The chip structure to be exported via gpiolib. * @base: The base pointer to the gpio configuration registers. + * @group: The group register number for gpio interrupt support. + * @irq_base: The base irq number. * @config: special function and pull-resistor control information. * @lock: Lock for exclusive access to this gpio bank. * @pm_save: Save information for suspend/resume support. @@ -63,6 +65,8 @@ struct s3c_gpio_chip { struct s3c_gpio_cfg *config; struct s3c_gpio_pm *pm; void __iomem *base; + int irq_base; + int group; spinlock_t lock; #ifdef CONFIG_PM u32 pm_save[4]; @@ -118,6 +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; |