From patchwork Fri Dec 27 09:13:41 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 3410951 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id E43E29F169 for ; Fri, 27 Dec 2013 09:25:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CA3072010F for ; Fri, 27 Dec 2013 09:25:47 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) by mail.kernel.org (Postfix) with ESMTP id BA25C2013A for ; Fri, 27 Dec 2013 09:25:46 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [IPv6:::1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 1422CB8C; Fri, 27 Dec 2013 09:22:13 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTP id DCAF5984 for ; Fri, 27 Dec 2013 09:22:11 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from kirsty.vergenet.net (kirsty.vergenet.net [202.4.237.240]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 6AD4D1F88A for ; Fri, 27 Dec 2013 09:22:11 +0000 (UTC) Received: from ayumi.isobedori.kobe.vergenet.net (p2020-ipbfp1604kobeminato.hyogo.ocn.ne.jp [114.154.85.20]) by kirsty.vergenet.net (Postfix) with ESMTP id B51AE2671D4; Fri, 27 Dec 2013 20:15:47 +1100 (EST) Received: by ayumi.isobedori.kobe.vergenet.net (Postfix, from userid 7100) id 4BD1CEDE025; Fri, 27 Dec 2013 18:15:46 +0900 (JST) From: Simon Horman To: ltsi-dev@lists.linuxfoundation.org Date: Fri, 27 Dec 2013 18:13:41 +0900 Message-Id: <1388135720-12832-188-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1388135720-12832-1-git-send-email-horms+renesas@verge.net.au> References: <1388135720-12832-1-git-send-email-horms+renesas@verge.net.au> X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org Cc: Magnus Damm Subject: [LTSI-dev] [PATCH ltsi-3.10 187/286] ARM: shmobile: koelsch: set .debounce_interval X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.org X-Virus-Scanned: ClamAV using ClamSMTP 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 Signed-off-by: Simon Horman (cherry picked from commit 478e2f9ca5ac9862a5cac0798814ba7d6a5de002) (Queued by Simon Horman for v3.14 but not yet in Linus's tree) Signed-off-by: Simon Horman --- 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 59fa0b9..5b81a34 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"),