From patchwork Sun Jan 9 17:25:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maulik Shah X-Patchwork-Id: 12707884 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 721D7C4167B for ; Sun, 9 Jan 2022 17:26:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234339AbiAIR0T (ORCPT ); Sun, 9 Jan 2022 12:26:19 -0500 Received: from alexa-out.qualcomm.com ([129.46.98.28]:10682 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229627AbiAIR0R (ORCPT ); Sun, 9 Jan 2022 12:26:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1641749177; x=1673285177; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=0fUCqJ/NL6PQdwsVXSoq785o5Pi/zNjfrTElJcS+GAM=; b=LWUWzqtw5TEPqYpr4A7eKbWMeVxn6KXjDJ7sVgwRlyI6B0L8C29lS+ts Mg7pG3H8mGsSsypuh8iFcDTSqZDds6FwKkPyTDg8piUYbb0/LQr319www EjXrrwEx0gJrYPPmQsY4T/OwISQ+U8QS9W7dVJQqx5tYmOatC/mqN/X3z w=; Received: from ironmsg-lv-alpha.qualcomm.com ([10.47.202.13]) by alexa-out.qualcomm.com with ESMTP; 09 Jan 2022 09:26:03 -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; 09 Jan 2022 09:26:03 -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; Sun, 9 Jan 2022 09:25:50 -0800 Received: from mkshah-linux.qualcomm.com (10.80.80.8) 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; Sun, 9 Jan 2022 09:25:46 -0800 From: Maulik Shah To: , CC: , , , , , , , Maulik Shah Subject: [PATCH 08/10] PM: domains: Store the closest hrtimer event of the domain CPUs Date: Sun, 9 Jan 2022 22:55:05 +0530 Message-ID: <1641749107-31979-9-git-send-email-quic_mkshah@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1641749107-31979-1-git-send-email-quic_mkshah@quicinc.com> References: <1641749107-31979-1-git-send-email-quic_mkshah@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The arch timer can not wake up the Qualcomm Technologies, Inc. (QTI) SoCs when the deepest CPUidle modes results in the SoC also to enter the low power mode. RSC is part of CPU subsystem and APSS rsc device is attached to cluster power domain. RSC has to setup next hrtimer wakeup in CONTROL_TCS which can wakeup the SoC from deepest low power states. The CONTROL_TCS does this by writing next wakeup in always on domain timer when the SoC is entering the low power state. Store the domain wakeup time from all the CPUs which can be used from domain power off callback by RSC device. Signed-off-by: Maulik Shah --- drivers/base/power/domain_governor.c | 1 + include/linux/pm_domain.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c index cd08c58..a4c7dd8 100644 --- a/drivers/base/power/domain_governor.c +++ b/drivers/base/power/domain_governor.c @@ -363,6 +363,7 @@ static bool cpu_power_down_ok(struct dev_pm_domain *pd) domain_wakeup = next_hrtimer; } } + genpd->next_hrtimer = domain_wakeup; /* The minimum idle duration is from now - until the next wakeup. */ idle_duration_ns = ktime_to_ns(ktime_sub(domain_wakeup, now)); diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 67017c9..682b372 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -136,6 +136,7 @@ struct generic_pm_domain { struct gpd_dev_ops dev_ops; s64 max_off_time_ns; /* Maximum allowed "suspended" time. */ ktime_t next_wakeup; /* Maintained by the domain governor */ + ktime_t next_hrtimer; /* Closest hrtimer event of the domain CPUs */ bool max_off_time_changed; bool cached_power_down_ok; bool cached_power_down_state_idx;