diff options
| -rw-r--r-- | arch/arm/mach-ep93xx/core.c | 18 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/include/mach/gpio.h | 2 |
2 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index 61da67f31ce..4781f323703 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -155,12 +155,14 @@ static unsigned char gpio_int_unmasked[3]; static unsigned char gpio_int_enabled[3]; static unsigned char gpio_int_type1[3]; static unsigned char gpio_int_type2[3]; +static unsigned char gpio_int_debouce[3]; /* Port ordering is: A B F */ static const u8 int_type1_register_offset[3] = { 0x90, 0xac, 0x4c }; static const u8 int_type2_register_offset[3] = { 0x94, 0xb0, 0x50 }; static const u8 eoi_register_offset[3] = { 0x98, 0xb4, 0x54 }; static const u8 int_en_register_offset[3] = { 0x9c, 0xb8, 0x58 }; +static const u8 int_debounce_register_offset[3] = { 0xa8, 0xc4, 0x64 }; void ep93xx_gpio_update_int_params(unsigned port) { @@ -183,6 +185,22 @@ void ep93xx_gpio_int_mask(unsigned line) gpio_int_unmasked[line >> 3] &= ~(1 << (line & 7)); } +void ep93xx_gpio_int_debounce(unsigned int irq, int enable) +{ + int line = irq_to_gpio(irq); + int port = line >> 3; + int port_mask = 1 << (line & 7); + + if (enable) + gpio_int_debouce[port] |= port_mask; + else + gpio_int_debouce[port] &= ~port_mask; + + __raw_writeb(gpio_int_debouce[port], + EP93XX_GPIO_REG(int_debounce_register_offset[port])); +} +EXPORT_SYMBOL(ep93xx_gpio_int_debounce); + /************************************************************************* * EP93xx IRQ handling *************************************************************************/ diff --git a/arch/arm/mach-ep93xx/include/mach/gpio.h b/arch/arm/mach-ep93xx/include/mach/gpio.h index f7020414c5d..0a1498ae899 100644 --- a/arch/arm/mach-ep93xx/include/mach/gpio.h +++ b/arch/arm/mach-ep93xx/include/mach/gpio.h @@ -99,6 +99,8 @@ /* maximum value for irq capable line identifiers */ #define EP93XX_GPIO_LINE_MAX_IRQ EP93XX_GPIO_LINE_F(7) +extern void ep93xx_gpio_int_debounce(unsigned int irq, int enable); + /* new generic GPIO API - see Documentation/gpio.txt */ #include <asm-generic/gpio.h> |