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=-2.4 required=3.0 tests=DKIM_SIGNED, FROM_LOCAL_NOVOWEL,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, T_DKIM_INVALID,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 0AEF0C433F4 for ; Fri, 24 Aug 2018 20:07:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B69B82150F for ; Fri, 24 Aug 2018 20:07:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="PbYxXT8v"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="HzZcUGwR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B69B82150F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728037AbeHXXno (ORCPT ); Fri, 24 Aug 2018 19:43:44 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:53162 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726675AbeHXXnn (ORCPT ); Fri, 24 Aug 2018 19:43:43 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id B2AD16055B; Fri, 24 Aug 2018 20:07:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1535141257; bh=S2+ZkwaMLf6Mce/14VsP2XJs7DgGYiunQ9xCIOk1LF4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PbYxXT8vUk8LiZyG4qglMRVMmEvoBf/3xhfig6vd6EVeJHDddfdR2hFBzf9UniwRH PQlZM3fGCUBHmbXX5DHOeh22aLGiI8E8nhWWDwfWMXOQJ3/pUyJX1mMKyHb76K2RXm 0/jm6r9B5wUtIy8JihlXJOy3oUhaqjbAuHY9zFhU= Received: from rplsssn-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rplsssn@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 4BAFC607B5; Fri, 24 Aug 2018 20:07:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1535141254; bh=S2+ZkwaMLf6Mce/14VsP2XJs7DgGYiunQ9xCIOk1LF4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HzZcUGwRnpOGD+C/wmDYJwvG3jXr7XHRnfk4sd3ZZ/IgMODEcwDrCEhLTjt6IpyEH Ld791YFBo2GM4PFkWw8KMnFkkUWS89WrSe/PNGYT4y4OdA1xSmfSPKVtyX5mUwPoTO /GsORgBe2k/3ff8aGjmsQS360a4FVB+5iYkQYD38= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 4BAFC607B5 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=rplsssn@codeaurora.org From: "Raju P.L.S.S.S.N" To: andy.gross@linaro.org, david.brown@linaro.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-pm@vger.kernel.org Cc: rnayak@codeaurora.org, bjorn.andersson@linaro.org, linux-kernel@vger.kernel.org, lorenzo.pieralisi@arm.com, rafael@kernel.org, drake@endlessm.com, sboyd@kernel.org, evgreen@chromium.org, dianders@chromium.org, mka@chromium.org, ilina@codeaurora.org, "Raju P.L.S.S.S.N" Subject: [PATCH RFC 6/6] drivers: soc: system_pm: Add suspend notifier Date: Sat, 25 Aug 2018 01:36:28 +0530 Message-Id: <1535141188-29731-7-git-send-email-rplsssn@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1535141188-29731-1-git-send-email-rplsssn@codeaurora.org> References: <1535141188-29731-1-git-send-email-rplsssn@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The order of suspending different devices, which is part of device suspend, during pm suspend can't be guaranteed. So once system PM device flushes the cached sleep/wake requests, other client devices may send new sleep or wake requests in their device suspend operations. The rpmh controller needs to manage such new requests if any. A notification is sent to controller to indicate the same. Signed-off-by: Raju P.L.S.S.S.N --- drivers/soc/qcom/system_pm.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/soc/qcom/system_pm.c b/drivers/soc/qcom/system_pm.c index 1451bf8..6524f7e 100644 --- a/drivers/soc/qcom/system_pm.c +++ b/drivers/soc/qcom/system_pm.c @@ -133,6 +133,7 @@ static int sys_pm_suspend(struct device *dev) /* Flush the sleep/wake sets in RSC controller */ rpmh_flush(dev); setup_pdc_wakeup_timer(true); + rpmh_notify_suspend(sys_pm_dev, true); } else { pr_err("%s:rpmh controller is busy\n", __func__); return -EBUSY; @@ -141,8 +142,14 @@ static int sys_pm_suspend(struct device *dev) return 0; } +static int sys_pm_resume(struct device *dev) +{ + rpmh_notify_suspend(sys_pm_dev, false); + return 0; +} + static const struct dev_pm_ops sys_pm_dev_pm_ops = { - SET_LATE_SYSTEM_SLEEP_PM_OPS(sys_pm_suspend, NULL) + SET_LATE_SYSTEM_SLEEP_PM_OPS(sys_pm_suspend, sys_pm_resume) }; static const struct of_device_id sys_pm_drv_match[] = { -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation.