From patchwork Fri Feb 4 22:56:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anjelique Melendez X-Patchwork-Id: 540081 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 7BA04C4332F for ; Fri, 4 Feb 2022 22:57:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356710AbiBDW5f (ORCPT ); Fri, 4 Feb 2022 17:57:35 -0500 Received: from alexa-out.qualcomm.com ([129.46.98.28]:32505 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356551AbiBDW5f (ORCPT ); Fri, 4 Feb 2022 17:57:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1644015455; x=1675551455; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Ss1yJ8C2o2JNvk+SxQ1vw9WaY3rA4Jk7i+Ds45rTd/o=; b=ozg4RIcACpBmObsDl69zuqi+FFLiiyJp8dhNymFU0FOpZ+ADDZAgQD0L n7UFRJmEhkHIUZTyVSyUI6K3fXBo268IgwlPIpcG0IWvmLPvIq/0r2yhB 7nYDeM4eSaFFUEl9HKl2HLXzbmkQ8jeeWMmAv/r1UtnJmmdd9sdDrSaFx 0=; Received: from ironmsg-lv-alpha.qualcomm.com ([10.47.202.13]) by alexa-out.qualcomm.com with ESMTP; 04 Feb 2022 14:57:35 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg-lv-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Feb 2022 14:57:34 -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; Fri, 4 Feb 2022 14:57:34 -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; Fri, 4 Feb 2022 14:57:33 -0800 From: Anjelique Melendez To: CC: , , , , , , , Anjelique Melendez Subject: [PATCH v4 4/4] input: misc: pm8941-pwrkey: simulate missed key press events Date: Fri, 4 Feb 2022 14:56:04 -0800 Message-ID: <20220204225600.1663-5-quic_amelende@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220204225600.1663-1-quic_amelende@quicinc.com> References: <20220204225600.1663-1-quic_amelende@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01b.na.qualcomm.com (10.47.209.197) 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. 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 881943ab4d55..3519152759dd 100644 --- a/drivers/input/misc/pm8941-pwrkey.c +++ b/drivers/input/misc/pm8941-pwrkey.c @@ -76,6 +76,7 @@ struct pm8941_pwrkey { u32 code; u32 sw_debounce_time_us; ktime_t sw_debounce_end_time; + bool last_status; const struct pm8941_data *data; }; @@ -162,6 +163,16 @@ static irqreturn_t pm8941_pwrkey_irq(int irq, void *_data) pwrkey->sw_debounce_end_time = ktime_add_us(ktime_get(), pwrkey->sw_debounce_time_us); + /* + * 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);