From patchwork Fri Apr 22 19:12:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anjelique Melendez X-Patchwork-Id: 565540 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 CD24DC3527D for ; Fri, 22 Apr 2022 22:06:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231894AbiDVWJT (ORCPT ); Fri, 22 Apr 2022 18:09:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37348 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232380AbiDVWIO (ORCPT ); Fri, 22 Apr 2022 18:08:14 -0400 Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 049F12C6E05; Fri, 22 Apr 2022 13:54:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1650660877; x=1682196877; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=G4z9WMGmzn5R8PACI1EDOWSQ9HwBuIwz18XwcrjNmJ0=; b=mWARJDqWM6+0BoB7IhpG02582jjwpwAWrvBTP++d6kDLP7t7M8THnB76 g9K4gje8poAvzzphzYmz3JoIRmjeoJVxNnk+lbOX7ZTDV09a8HB2TjyUo FjCof7KqHOXJVtqFbKFBtI3uckFzsfptnpq0x6ZdhGjuRwVqVKBLzUs4H 4=; Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by alexa-out-sd-01.qualcomm.com with ESMTP; 22 Apr 2022 12:14:37 -0700 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; 22 Apr 2022 12:14:36 -0700 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 15.2.986.22; Fri, 22 Apr 2022 12:14:36 -0700 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 15.2.986.22; Fri, 22 Apr 2022 12:14:36 -0700 From: Anjelique Melendez To: , , , CC: , , , , , , , , David Collins , Anjelique Melendez Subject: [PATCH v6 5/5] input: misc: pm8941-pwrkey: simulate missed key press events Date: Fri, 22 Apr 2022 12:12:43 -0700 Message-ID: <20220422191239.6271-6-quic_amelende@quicinc.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220422191239.6271-1-quic_amelende@quicinc.com> References: <20220422191239.6271-1-quic_amelende@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-pm@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);