Received: by 2002:a25:f815:0:0:0:0:0 with SMTP id u21csp1922790ybd; Sun, 23 Jun 2019 20:10:18 -0700 (PDT) X-Google-Smtp-Source: APXvYqydBBugRrFM/7xeNtkSN+vf6NCR+4l8TMwcLQ3UetZMUtPV2+WynNQGgdSgKGbvU3cVLwtS X-Received: by 2002:a63:24c1:: with SMTP id k184mr31289765pgk.120.1561345817817; Sun, 23 Jun 2019 20:10:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1561345817; cv=none; d=google.com; s=arc-20160816; b=CIJZl5HLVXJsVUj2rtCXH92rFpExuQv3fiInADA/fnauc5aN/cEE5BvhV0MwkrgbUn 9NavqJ8vT4VaoqxRrJrrYqxJNSy8jF7xhvTHJk0+tdia0mNrMqy62CGnDdUNxN3BhKpH RRlkqhl/6+07IlVQVrCoyvnQQGcWurLEpo+1Mc+80B7xnHzIxSPGQXVBRH+QiR7mOKoD 0eDijQI/bjCewp3VdC0nwudzvAbESoBkaxYEouL3fJ3erPrOpc8SeQts0XVryK8SRfsI lS9L2RP+RX8dH926rOhEh/TjqJNN3c/SomR2QVlMsTrsi/ZI8rkNbYneCl4FgJEPTocT +t0Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=Y381zs7JqUeO4ZbV4kzg6cbvTaILm3gppCIZ9QaFOsw=; b=1KEG4bHfCWvJcQVh94jJGrYaJ9kjs90w8TrMrkMrnR/6X4NKTsxXFsTMOmio/47Nfb lIKzi7KEEp+q/HO3slNUpLICLbyS78LCTaOBjVcrJMH7Elk0eGVIlNQONSedMxpR562P MDPKjSd1WwVV0u4R8DzopuP8gw2jIpYXxoQlW7w9Nqt4zRUtNItACURQxRcjdJE0p3PC akwnk+2erYIalClTwPelS9Uh5Uph2UTX7XEDXsG92k7RFCUQ1YZ+Fpt5euuMgFntXX2e w2Rgl4IfsjH9iNFsF7IerNhQIB0SifDcBPPbKdBB8l0u77QCPGzQHIL/o7zZgVSRr9ww N4ug== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=KLKEEFV7; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 60si9223147plf.143.2019.06.23.20.10.01; Sun, 23 Jun 2019 20:10:17 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=KLKEEFV7; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727346AbfFXDJo (ORCPT + 99 others); Sun, 23 Jun 2019 23:09:44 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:33550 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726307AbfFXDJo (ORCPT ); Sun, 23 Jun 2019 23:09:44 -0400 Received: by mail-lj1-f196.google.com with SMTP id h10so11079593ljg.0; Sun, 23 Jun 2019 20:09:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Y381zs7JqUeO4ZbV4kzg6cbvTaILm3gppCIZ9QaFOsw=; b=KLKEEFV7vyQEtxZ0uYEFUUY5ay9LG072nBkWBGisDQoh237JAJ6TnNhz4qsxgAGK22 YNFSxBL5c+kfsqSm+FEwy4tdVxBIPEC5Dz/4fbi4gx0NTUoGuGOnHdKG6AvZ8gAuLLBT FthFg8LiYixseIyfokMbAhKy0/fG2R5y40iC7A9pvKuE2dCAzxOGEoADpz1/gnKHdmgA Mlexq03Pe5YwnT9xH0yosgCWaP2TDN3CAM1SCK9kHzDCYkBmtiKgYbUgjyurURDmPqDe To/wh7jkGuUiJIIAU3QuGjUiiyRenvhT9dc+Jh0yg89XDyTXt3HIsMBxhcneBn3SzVk6 dBww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Y381zs7JqUeO4ZbV4kzg6cbvTaILm3gppCIZ9QaFOsw=; b=llfoXSjqqAZsiV5PQLMguB7WTLH4i1UbRg+pH3Iasghf9h0JHGIHoXtb9OjzUGpBIW AU5tp5W7/xe0y6Dk+WH2fLntCaKksry2ehN+jhdnKaI9M9hA/BvUjvl7uwWciLFY0f+o G92Eg1kHWdhrkvTPreHDKxFdMTt4K0GcPk951mBPqV0VCHL/XEsQGm5hTdIZLJVKwBfP 0UVrhjqXtPh0Foc9RjwrGD22dUHvhX087pqvl7UT9rplOpA60+nrS91p6ahrcBQC75zU IORlUHJgP6d46cmyxoXelohEYuMpjnJ+dyk4RrUb2hucT+4yFS0UFgC/HHxdiTUlFrpf qn2w== X-Gm-Message-State: APjAAAWvf2V95Z44T0VZCrVa0BILC3HZDDKd3lU22gz1PF+VQwI0cvoC TUSQkphZ6bhdyxYY/djZ3GL21IwX X-Received: by 2002:a2e:b1c1:: with SMTP id e1mr14060925lja.228.1561326523122; Sun, 23 Jun 2019 14:48:43 -0700 (PDT) Received: from localhost.localdomain (ppp91-79-162-197.pppoe.mtu-net.ru. [91.79.162.197]) by smtp.gmail.com with ESMTPSA id m17sm1460029lfb.9.2019.06.23.14.48.42 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 23 Jun 2019 14:48:42 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Jonathan Hunter , Tomeu Vizoso Cc: linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 08/11] PM / devfreq: tegra30: Stop de-boosting once it's finished Date: Mon, 24 Jun 2019 00:46:55 +0300 Message-Id: <20190623214658.11680-9-digetx@gmail.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190623214658.11680-1-digetx@gmail.com> References: <20190623214658.11680-1-digetx@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Once boosting value is 0, then further consecutive-down events won't do anything useful since the only purpose of those consecutive events to boost the freq and de-boosting is over in the case of 0. Note that upper watermark is infinitely high in a case of frequency max out and thus the upper events are stopping by themselves. In a result of this change all parasite interrupts are fixed now and interrupts activity is nearly non-existent now! Signed-off-by: Dmitry Osipenko --- drivers/devfreq/tegra30-devfreq.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index 6fb3ca125438..81449cc1392b 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -424,6 +424,8 @@ static void actmon_isr_device(struct tegra_devfreq *tegra, dev->config->boost_up_coeff); dev->boost_freq += ACTMON_BOOST_FREQ_STEP; + dev_ctrl |= ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN; + if (dev->boost_freq >= tegra->max_freq && !low_activity) dev->boost_freq = tegra->max_freq; @@ -442,6 +444,10 @@ static void actmon_isr_device(struct tegra_devfreq *tegra, tegra_devfreq_update_wmark(tegra, dev); } + /* no boosting => no need for consecutive-down interrupt */ + if (dev->boost_freq == 0) + dev_ctrl &= ~ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN; + device_writel(dev, dev_ctrl, ACTMON_DEV_CTRL); device_writel(dev, ACTMON_INTR_STATUS_CLEAR, ACTMON_DEV_INTR_STATUS); -- 2.22.0