From patchwork Wed May 13 02:58:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 11544539 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A366214C0 for ; Wed, 13 May 2020 03:07:46 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 823EC23127 for ; Wed, 13 May 2020 03:07:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="UCeRdB1R" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 823EC23127 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=8fWbaAMCA2jFUpBxfS774fMl3bA9fkHgeGNsFswdG40=; b=UCe RdB1RaYGYy9vuVFnULM0w+Jg+3hKmixRQe+PIIOSN5LoOuhCxuZ/9Rtzs4YyqTvODROQyqUTaU+Pg F2Oom9XdyVR79kNY4JZIANrqa2u934Sr1iQQIlKMEEn5RfwTNRhQiCmk3lp2yZmKbSKGCqMTes3y6 PQ+NcBa4M7LOF5sLKw7PkR+TBfGM81V0t1xEJv/P7eC7KOQOhuEZKtVJcEym+aLROFTiPJYkbL1az 9LyH12HZLCLrte0Ew63NBCcegN0mqRAYCwQHbwiS4aNfk15CrqD6gdAiEFMnN0khNvbGIpuP+zZE5 MwZX3AMpqZRheTGjCCiysADAatrgzww==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jYhkE-0003XD-PC; Wed, 13 May 2020 03:07:42 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jYhkB-0003Wr-Vg for linux-arm-kernel@lists.infradead.org; Wed, 13 May 2020 03:07:41 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id D93F9201201; Wed, 13 May 2020 05:07:37 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 42BE5201200; Wed, 13 May 2020 05:07:33 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id C9014402B4; Wed, 13 May 2020 11:07:26 +0800 (SGT) From: Anson Huang To: rui.zhang@intel.com, daniel.lezcano@linaro.org, amit.kucheria@verdurent.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] thermal: imx8mm: Add get_trend ops Date: Wed, 13 May 2020 10:58:08 +0800 Message-Id: <1589338689-15700-1-git-send-email-Anson.Huang@nxp.com> X-Mailer: git-send-email 2.7.4 X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200512_200740_157841_BFCDA40B X-CRM114-Status: UNSURE ( 8.12 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.21 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Linux-imx@nxp.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add get_trend ops for i.MX8MM thermal to apply fast cooling mechanism, when temperature exceeds passive trip point, the highest cooling action will be applied, and when temperature drops to lower than the margin below passive trip point, the lowest cooling action will be applied. Signed-off-by: Anson Huang --- drivers/thermal/imx8mm_thermal.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/thermal/imx8mm_thermal.c b/drivers/thermal/imx8mm_thermal.c index e6061e2..8f6a0b8 100644 --- a/drivers/thermal/imx8mm_thermal.c +++ b/drivers/thermal/imx8mm_thermal.c @@ -38,6 +38,8 @@ #define TMU_VER1 0x1 #define TMU_VER2 0x2 +#define IMX_TEMP_COOL_MARGIN 10000 + struct thermal_soc_data { u32 num_sensors; u32 version; @@ -103,8 +105,33 @@ static int tmu_get_temp(void *data, int *temp) return tmu->socdata->get_temp(data, temp); } +static int tmu_get_trend(void *p, int trip, enum thermal_trend *trend) +{ + struct tmu_sensor *sensor = p; + int trip_temp, temp, ret; + + if (!sensor->tzd) + return -EINVAL; + + ret = sensor->tzd->ops->get_trip_temp(sensor->tzd, trip, &trip_temp); + if (ret) + return ret; + + temp = READ_ONCE(sensor->tzd->temperature); + + if (temp > trip_temp) + *trend = THERMAL_TREND_RAISE_FULL; + else if (temp < (trip_temp - IMX_TEMP_COOL_MARGIN)) + *trend = THERMAL_TREND_DROP_FULL; + else + *trend = THERMAL_TREND_STABLE; + + return 0; +} + static struct thermal_zone_of_device_ops tmu_tz_ops = { .get_temp = tmu_get_temp, + .get_trend = tmu_get_trend, }; static void imx8mm_tmu_enable(struct imx8mm_tmu *tmu, bool enable)