From patchwork Thu Jan 27 21:00:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anjelique Melendez X-Patchwork-Id: 12727415 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 53E4FC43217 for ; Thu, 27 Jan 2022 21:03:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241136AbiA0VDB (ORCPT ); Thu, 27 Jan 2022 16:03:01 -0500 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:18292 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344206AbiA0VDA (ORCPT ); Thu, 27 Jan 2022 16:03:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1643317380; x=1674853380; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=OXRAZ4ZbAiGfh4OhUn2p/TK/Z5xaiNitvZb8Ee+RiIw=; b=tOqFrcLs87Gi7yG4SKpEeKjvu79v2fgAfc78i+1LfmHLECKocY9Si7Tf gq2Uo5V302RNiqLsZbahcQkCCAr00HvjAE06blYkEnl5w/0Hg4rbljgZi 2eTVEisRQfN6uuDbHHOI4xDl6Fh7IVTibY29fDJ23ePWvd0jutpjaCHjv Q=; Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by alexa-out-sd-02.qualcomm.com with ESMTP; 27 Jan 2022 13:03:00 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg02-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jan 2022 13:02:59 -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, 27 Jan 2022 13:02:59 -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, 27 Jan 2022 13:02:58 -0800 From: Anjelique Melendez To: CC: , , , , , , , Anjelique Melendez Subject: [PATCH v2 4/4] input: misc: pm8941-pwrkey: simulate missed key press events Date: Thu, 27 Jan 2022 13:00:29 -0800 Message-ID: <20220127210024.25597-5-quic_amelende@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220127210024.25597-1-quic_amelende@quicinc.com> References: <20220127210024.25597-1-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 bcdbe260b684..99ef2ff92eb1 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);