diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/plat-omap/gpio.c | 60 |
1 files changed, 55 insertions, 5 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c index c233ebd7639a..56f4d1394d56 100644 --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -110,6 +110,8 @@ #define OMAP24XX_GPIO_LEVELDETECT1 0x0044 #define OMAP24XX_GPIO_RISINGDETECT 0x0048 #define OMAP24XX_GPIO_FALLINGDETECT 0x004c +#define OMAP24XX_GPIO_DEBOUNCE_EN 0x0050 +#define OMAP24XX_GPIO_DEBOUNCE_VAL 0x0054 #define OMAP24XX_GPIO_CLEARIRQENABLE1 0x0060 #define OMAP24XX_GPIO_SETIRQENABLE1 0x0064 #define OMAP24XX_GPIO_CLEARWKUENA 0x0080 @@ -463,8 +465,50 @@ do { \ __raw_writel(l, base + reg); \ } while(0) +void omap_set_gpio_debounce(int gpio, int enable) +{ + struct gpio_bank *bank; + void __iomem *reg; + u32 val, l = 1 << get_gpio_index(gpio); + + if (cpu_class_is_omap1()) + return; + + bank = get_gpio_bank(gpio); + reg = bank->base; + + reg += OMAP24XX_GPIO_DEBOUNCE_EN; + val = __raw_readl(reg); + + if (enable) + val |= l; + else + val &= ~l; + + __raw_writel(val, reg); +} +EXPORT_SYMBOL(omap_set_gpio_debounce); + +void omap_set_gpio_debounce_time(int gpio, int enc_time) +{ + struct gpio_bank *bank; + void __iomem *reg; + + if (cpu_class_is_omap1()) + return; + + bank = get_gpio_bank(gpio); + reg = bank->base; + + enc_time &= 0xff; + reg += OMAP24XX_GPIO_DEBOUNCE_VAL; + __raw_writel(enc_time, reg); +} +EXPORT_SYMBOL(omap_set_gpio_debounce_time); + #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) -static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger) +static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio, + int trigger) { void __iomem *base = bank->base; u32 gpio_bit = 1 << gpio; @@ -477,19 +521,25 @@ static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio, in trigger & __IRQT_RISEDGE); MOD_REG_BIT(OMAP24XX_GPIO_FALLINGDETECT, gpio_bit, trigger & __IRQT_FALEDGE); + if (likely(!(bank->non_wakeup_gpios & gpio_bit))) { if (trigger != 0) - __raw_writel(1 << gpio, bank->base + OMAP24XX_GPIO_SETWKUENA); + __raw_writel(1 << gpio, bank->base + + OMAP24XX_GPIO_SETWKUENA); else - __raw_writel(1 << gpio, bank->base + OMAP24XX_GPIO_CLEARWKUENA); + __raw_writel(1 << gpio, bank->base + + OMAP24XX_GPIO_CLEARWKUENA); } else { if (trigger != 0) bank->enabled_non_wakeup_gpios |= gpio_bit; else bank->enabled_non_wakeup_gpios &= ~gpio_bit; } - /* FIXME: Possibly do 'set_irq_handler(j, handle_level_irq)' if only level - * triggering requested. */ + + /* + * FIXME: Possibly do 'set_irq_handler(j, handle_level_irq)' if only + * level triggering requested. + */ } #endif |