From patchwork Tue Sep 3 07:36:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ye Zhang X-Patchwork-Id: 13788192 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 79D61CD342A for ; Tue, 3 Sep 2024 07:40:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7eHDKpXkAwf0EmM2MO2vn8f5Q+ZSxFUPVK83g650cEY=; b=Dv/cPcNj1yz+2X TVEH1PWVkgqQ+mal+/bQsPUdATwbiaeeq8UnG2YJIP+kxf5GmDnrm+FjhKO0EsmqbZDCk/LhfnWrq rniWyMPLPRoYRcTwTMhv7NINQCjmi0VWQScZHoU9whddlnq1Og1APjen1aNY4D6wgk1zxaFRjTBMv 8726fSeEAjfvOxGRM1nzHNcY4BjdO4sRTXRsixEambVhoDl50FLfjQeHCiRTkCoMi2mnMtcDuIOmx 7w4XwJl7tw2BYLNNNogPw9+78+lqCLZYG94P22LZO7Hwm5hMRTtOk8YORhsJgyJSDBAUn3o5f/vAA NuS8kASb1N2OlxBtZqUg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1slO8u-0000000Giqu-2Ylj; Tue, 03 Sep 2024 07:40:00 +0000 Received: from mail-m1287.netease.com ([103.209.128.7]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1slO6R-0000000GiKi-034f; Tue, 03 Sep 2024 07:37:29 +0000 DKIM-Signature: a=rsa-sha256; b=IUKg42GNT3xefHxZljlCyU0i5Ir/n0Tdxfi7ukaqzx/HGz+c4C/Idpy4zESZzqtC+jSEj0N09lQzk/dLj2E3YOLA/4szuvdCjKxw6CHBIh9oPIdzHOKMqYiGb1FeEyhCMHzmvRhc09QFRUi/Wb0f4QaqCxH8AXHk8KvtEAYkVmU=; c=relaxed/relaxed; s=default; d=rock-chips.com; v=1; bh=i3Ih0qHoA8BaoqENjDe44S2TQECjEhO9KvAw8e9oDoQ=; h=date:mime-version:subject:message-id:from; Received: from rockchip.. (unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTPA id D3C227E03F6; Tue, 3 Sep 2024 15:37:08 +0800 (CST) From: Ye Zhang To: Ye Zhang , linus.walleij@linaro.org, brgl@bgdev.pl, heiko@sntech.de, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, mika.westerberg@linux.intel.com, andriy.shevchenko@linux.intel.com, tao.huang@rock-chips.com, finley.xiao@rock-chips.com, tim.chen@rock-chips.com, elaine.zhang@rock-chips.com Subject: [PATCH v3 05/12] gpio: rockchip: fix debounce calculate Date: Tue, 3 Sep 2024 15:36:42 +0800 Message-Id: <20240903073649.237362-6-ye.zhang@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240903073649.237362-1-ye.zhang@rock-chips.com> References: <20240903073649.237362-1-ye.zhang@rock-chips.com> MIME-Version: 1.0 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZQ04dTFYYTE1PQ0MZTklLGUJWFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSUhCSE NVSktLVUpCS0tZBg++ X-HM-Tid: 0a91b6d0e6d209cfkunmd3c227e03f6 X-HM-MType: 1 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6NS46Aww6IjIrS0kZLBJKFRhO H1FPFDVVSlVKTElOSE9CS0hLSktIVTMWGhIXVQIeVQETGhUcOwkUGBBWGBMSCwhVGBQWRVlXWRIL WUFZTkNVSUlVTFVKSk9ZV1kIAVlBSUJDSjcG X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240903_003727_418757_8FFFF11F X-CRM114-Status: GOOD ( 11.53 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The previous configuration ensured that signals with a duration greater than the debounce value would always be detected, while signals with a duration less than debounce / 2 would always not be detected. After the modification, it is changed to ensure that signals with a duration greater than 2 * debounce will always be detected, while signals with a duration less than debounce/2 will still not be detected. Fixes: 3bcbd1a85b68 ("gpio/rockchip: support next version gpio controller") Signed-off-by: Ye Zhang --- drivers/gpio/gpio-rockchip.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c index 26191197cd37..75355f799751 100644 --- a/drivers/gpio/gpio-rockchip.c +++ b/drivers/gpio/gpio-rockchip.c @@ -213,13 +213,13 @@ static int rockchip_gpio_set_debounce(struct gpio_chip *gc, freq = clk_get_rate(bank->db_clk); if (!freq) return -EINVAL; - div = (u64)(GENMASK(23, 0) + 1) * 2 * HZ_PER_MHZ; + div = (u64)(GENMASK(23, 0) + 1) * HZ_PER_MHZ; max_debounce = DIV_ROUND_CLOSEST_ULL(div, freq); if (debounce > max_debounce) return -EINVAL; div = (u64)debounce * freq; - div_reg = DIV_ROUND_CLOSEST_ULL(div, 2 * USEC_PER_SEC) - 1; + div_reg = DIV_ROUND_CLOSEST_ULL(div, USEC_PER_SEC) - 1; } raw_spin_lock_irqsave(&bank->slock, flags);