| From ecbe3371f896fef840e52105c125df9a36c29811 Mon Sep 17 00:00:00 2001 |
| From: Simon Horman <horms+renesas@verge.net.au> |
| Date: Tue, 29 Oct 2013 17:57:31 +0900 |
| Subject: ARM: shmobile: koelsch: set .debounce_interval |
| |
| In R-Car GPIO hardware block, 'chattering removal' feature can be |
| enabled on GPIO-n-[3:0] pins, but it's not supported on rest of pins |
| GPIO-n-[31:4]. |
| |
| Set an appropriate debounce interval, instead. We could confirm that |
| spurious/unnecessary GPIO interrupts are prevented by this settings. |
| |
| Based on work for the lager board by Shinya Kuribayashi. |
| |
| Cc: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| (cherry picked from commit 478e2f9ca5ac9862a5cac0798814ba7d6a5de002) |
| (Queued by Simon Horman for v3.14 but not yet in Linus's tree) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| --- |
| arch/arm/mach-shmobile/board-koelsch.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| diff --git a/arch/arm/mach-shmobile/board-koelsch.c b/arch/arm/mach-shmobile/board-koelsch.c |
| index 59fa0b975473..5b81a343c5f9 100644 |
| --- a/arch/arm/mach-shmobile/board-koelsch.c |
| +++ b/arch/arm/mach-shmobile/board-koelsch.c |
| @@ -56,7 +56,8 @@ static const struct gpio_led_platform_data koelsch_leds_pdata __initconst = { |
| |
| /* GPIO KEY */ |
| #define GPIO_KEY(c, g, d, ...) \ |
| - { .code = c, .gpio = g, .desc = d, .active_low = 1 } |
| + { .code = c, .gpio = g, .desc = d, .active_low = 1, \ |
| + .debounce_interval = 20 } |
| |
| static struct gpio_keys_button gpio_buttons[] = { |
| GPIO_KEY(KEY_4, RCAR_GP_PIN(5, 3), "SW2-pin4"), |
| -- |
| 1.8.5.rc3 |
| |
