From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 17D01C433EF for ; Fri, 17 Sep 2021 16:32:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EDF3961019 for ; Fri, 17 Sep 2021 16:32:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234799AbhIQQde (ORCPT ); Fri, 17 Sep 2021 12:33:34 -0400 Received: from so254-9.mailgun.net ([198.61.254.9]:11242 "EHLO so254-9.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232308AbhIQQdc (ORCPT ); Fri, 17 Sep 2021 12:33:32 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1631896330; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=bC6WW1HCqOHoLARuCxv4vK+SHjilrqIcRBQKaBuMPto=; b=n173EksbiHMbNOCVdYluLJHpdtfKpcxj7xEe6qEGBM0EIa7DFchlK4WUjLTAGgnl/83wdn1Z zww9SFHws22hXuctka4mIMHZblCX6hYw2f1zdgRJUF+FQul4vIG3anQhM/ffrEr5Czs379ho VMIih51zrbD1vVv+Bujvym0ad8c= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n06.prod.us-west-2.postgun.com with SMTP id 6144c306b585cc7d243210da (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 17 Sep 2021 16:32:06 GMT Sender: deesin=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id AD68EC43616; Fri, 17 Sep 2021 16:32:05 +0000 (UTC) Received: from deesin-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: deesin) by smtp.codeaurora.org (Postfix) with ESMTPSA id D9A08C4338F; Fri, 17 Sep 2021 16:32:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org D9A08C4338F Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=codeaurora.org From: Deepak Kumar Singh To: bjorn.andersson@linaro.org, swboyd@chromium.org, clew@codeaurora.org, sibis@codeaurora.org Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, Deepak Kumar Singh , Andy Gross Subject: [PATCH V3 1/1] soc: qcom: smp2p: Add wakeup capability to SMP2P IRQ Date: Fri, 17 Sep 2021 22:01:28 +0530 Message-Id: <1631896288-17281-1-git-send-email-deesin@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Remote susbsystems notify fatal crash throught smp2p interrupt. When remoteproc crashes it can cause soc to come out of low power state and may not allow again to enter in low power state until crash is handled. Mark smp2p interrupt wakeup capable so that interrupt handler is executed and remoteproc crash can be handled in system resume path. This patch marks interrupt wakeup capable but keeps wakeup disabled by default and leaves it to user space to enable it according to its requirement. Signed-off-by: Deepak Kumar Singh --- drivers/soc/qcom/smp2p.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/soc/qcom/smp2p.c b/drivers/soc/qcom/smp2p.c index 2df4883..5f8ba96 100644 --- a/drivers/soc/qcom/smp2p.c +++ b/drivers/soc/qcom/smp2p.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -538,9 +539,26 @@ static int qcom_smp2p_probe(struct platform_device *pdev) goto unwind_interfaces; } + /* + * Treat smp2p interrupt as wakeup source, but keep it disabled + * by default. User space can decide enabling it depending on its + * use cases. For example if remoteproc crashes and device wants + * to handle it immediatedly (e.g. to not miss phone calls) it can + * enable wakeup source from user space, while other devices which + * do not have proper autosleep feature may want to handle it with + * other wakeup events (e.g. Power button) instead waking up immediately. + */ + device_set_wakeup_capable(&pdev->dev, true); + + ret = dev_pm_set_wake_irq(&pdev->dev, irq); + if (ret) + set_wake_irq_fail; return 0; +set_wake_irq_fail: + dev_pm_clear_wake_irq(&pdev->dev); + unwind_interfaces: list_for_each_entry(entry, &smp2p->inbound, node) irq_domain_remove(entry->domain); @@ -565,6 +583,9 @@ static int qcom_smp2p_remove(struct platform_device *pdev) struct qcom_smp2p *smp2p = platform_get_drvdata(pdev); struct smp2p_entry *entry; + dev_pm_clear_wake_irq(&pdev->dev); + device_init_wakeup(&pdev->dev, false); + list_for_each_entry(entry, &smp2p->inbound, node) irq_domain_remove(entry->domain); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project