From patchwork Thu Jan 20 20:41:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anjelique Melendez X-Patchwork-Id: 12719059 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6EC1C433EF for ; Thu, 20 Jan 2022 20:44:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377683AbiATUo0 (ORCPT ); Thu, 20 Jan 2022 15:44:26 -0500 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:49766 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347295AbiATUoZ (ORCPT ); Thu, 20 Jan 2022 15:44:25 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1642711465; x=1674247465; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=usZwPYTGoT6OVxIL66S3HEIeDlMzBm+6CatAexWJ4v0=; b=DvNSeYlPHxzS332dyrUazaYFLIV+qi9YttWEp+5ErFW21uEsN2D5K+uo Th7guUw1k5aT1vHC1BY3Rx6WjuHvlm9+iCf0XxR6bTi1jZ93AJ2fER8fP y+hBRqqOJOHsdEAENC5NqrvBfq2b1YrhSvMGKFrf94qxyy5wgJl/Izw7o 8=; Received: from unknown (HELO ironmsg03-sd.qualcomm.com) ([10.53.140.143]) by alexa-out-sd-02.qualcomm.com with ESMTP; 20 Jan 2022 12:44:25 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg03-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jan 2022 12:44:25 -0800 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Thu, 20 Jan 2022 12:44:24 -0800 Received: from hu-amelende-lv.qualcomm.com (10.49.16.6) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Thu, 20 Jan 2022 12:44:24 -0800 From: Anjelique Melendez To: CC: , , , , , , , Anjelique Melendez Subject: [PATCH 2/3] input: misc: pm8941-pwrkey: simulate missed key press events Date: Thu, 20 Jan 2022 12:41:35 -0800 Message-ID: <20220120204132.17875-3-quic_amelende@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220120204132.17875-1-quic_amelende@quicinc.com> References: <20220120204132.17875-1-quic_amelende@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: David Collins The status of the keys connected to the KPDPWR_N and RESIN_N pins is identified by reading corresponding bits in the interrupt real time status register. If the status has changed by the time that the interrupt is handled then a press event will be missed. Maintain a last known status variable to find unbalanced release events and simulate press events for each accordingly. Change-Id: I180469a7048a40e490f21d0f8b9504136131e75b Signed-off-by: David Collins Signed-off-by: Anjelique Melendez --- drivers/input/misc/pm8941-pwrkey.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/input/misc/pm8941-pwrkey.c b/drivers/input/misc/pm8941-pwrkey.c index b912ce00ce1c..0ce00736e695 100644 --- a/drivers/input/misc/pm8941-pwrkey.c +++ b/drivers/input/misc/pm8941-pwrkey.c @@ -77,6 +77,7 @@ struct pm8941_pwrkey { u32 code; u32 sw_debounce_time_us; ktime_t last_release_time; + bool last_status; const struct pm8941_data *data; }; @@ -166,6 +167,16 @@ static irqreturn_t pm8941_pwrkey_irq(int irq, void *_data) if (pwrkey->sw_debounce_time_us && !sts) pwrkey->last_release_time = ktime_get(); + /* + * Simulate a press event in case a release event occurred without a + * corresponding press event. + */ + if (!pwrkey->last_status && !sts) { + input_report_key(pwrkey->input, pwrkey->code, 1); + input_sync(pwrkey->input); + } + pwrkey->last_status = sts; + input_report_key(pwrkey->input, pwrkey->code, sts); input_sync(pwrkey->input);