diff options
| author | Hartley Sweeten <hartleys@visionengravers.com> | 2008-10-28 17:55:30 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-12-01 17:22:09 +0000 |
| commit | 799a0600ac49b03c1a6244847c2725c0082ba775 (patch) | |
| tree | 971e5b3529b09228b095feedc9eeb9e0734fa568 /arch/arm/mach-ep93xx/include | |
| parent | d52a26a956d3925c6eaf8770e95e4d5f13740696 (diff) | |
[ARM] 5324/2: ep93xx: support gpio interrupt debounce
Add debounce support for ep93xx gpio interrupts.
On the EP93xx, GPIO ports A, B, and F can be used to generate
interrupts. For each port, if interrupts are enabled, it is
possible to debouce the input signal. Debouncing is implemented
by passing the input signal through a 2-bit shift register clocked
by a 128Hz clock.
This patch adds a platform specific way to enable the debouce
feature for these input ports.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ep93xx/include')
| -rw-r--r-- | arch/arm/mach-ep93xx/include/mach/gpio.h | 2 |
1 files changed, 2 insertions, 0 deletions
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> |