From patchwork Tue Apr 7 17:49:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrzej Pietrasiewicz X-Patchwork-Id: 11478533 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 DD7C815AB for ; Tue, 7 Apr 2020 17:51:01 +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 A8B292076E for ; Tue, 7 Apr 2020 17:51:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="rGLGJmWl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A8B292076E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.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:References: In-Reply-To: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:List-Owner; bh=20drDTdFnJWKsHctAhfXKou2LlVvWLrYm72odEDglN4=; b=rGLGJmWl1YxtiX9hFfeSriwZV2 DNbr3M7Y+l7i3lexhOyURnxMQ6MtaMUd4VIFr+6P+3UHGuPIQH30bQkl5CvuC0J5YyMsduPgTRooT qrq5AyOghXJ3cQG5zT71XPVxhJuFvrjR+TRWSyYhk6pYjIyqBTqfr/Thm6XHNwy0hf9HUM+lkrSgs poyDOohrQjoBa8Qo7Y3IAJj+3/XdcqE42lp2BNuckTy9nrPRNxYoRt5YNwp5tdOqZkFXh26uJeu5J g2V/MLP8d5BWhDpaES/OYX+dUil2vo0eP/2b6AhztJNP2n3tGwHRhqon0/yKuqmhFA9hln4MypP/X E5up31ag==; 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 1jLsNI-0002n4-A1; Tue, 07 Apr 2020 17:51:00 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jLsM9-0007dE-3v for linux-arm-kernel@lists.infradead.org; Tue, 07 Apr 2020 17:49:50 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: andrzej.p) with ESMTPSA id 8C9132972AA From: Andrzej Pietrasiewicz To: linux-pm@vger.kernel.org Subject: [RFC 5/8] thermal: core: Monitor thermal zone after mode change Date: Tue, 7 Apr 2020 19:49:23 +0200 Message-Id: <20200407174926.23971-6-andrzej.p@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200407174926.23971-1-andrzej.p@collabora.com> References: <20200407174926.23971-1-andrzej.p@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200407_104949_308614_3EEBAD95 X-CRM114-Status: GOOD ( 10.70 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines 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: "Rafael J . Wysocki" , platform-driver-x86@vger.kernel.org, kernel@collabora.com, Fabio Estevam , Amit Kucheria , Daniel Lezcano , linux-acpi@vger.kernel.org, NXP Linux Team , Darren Hart , Zhang Rui , Gayatri Kammela , Len Brown , Sascha Hauer , Ido Schimmel , Jiri Pirko , Thomas Gleixner , Allison Randal , linux-arm-kernel@lists.infradead.org, Support Opensource , Shawn Guo , Peter Kaestle , Andrzej Pietrasiewicz , Pengutronix Kernel Team , netdev@vger.kernel.org, Enrico Weigelt , "David S . Miller" , Andy Shevchenko MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Mode changing might imply a need to stop/start polling the device. monitor_thermal_zone() when mode changes or if previous mode is unknown. Signed-off-by: Andrzej Pietrasiewicz --- drivers/thermal/thermal_core.c | 26 ++++++++++++++++++++++++++ drivers/thermal/thermal_core.h | 2 ++ drivers/thermal/thermal_sysfs.c | 8 +++++--- 3 files changed, 33 insertions(+), 3 deletions(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 9a321dc548c8..aae2b049d45c 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -469,6 +469,32 @@ static void thermal_zone_device_reset(struct thermal_zone_device *tz) thermal_zone_device_init(tz); } +int thermal_zone_set_mode(struct thermal_zone_device *tz, + enum thermal_device_mode mode) +{ + enum thermal_device_mode old_mode; + int result; + + if (!tz->ops->set_mode) + return -EPERM; + + if (tz->ops->get_mode) { + result = tz->ops->get_mode(tz, &old_mode); + if (result) + return result; + } + + result = tz->ops->set_mode(tz, mode); + if (result) + return result; + + /* old mode unknown or mode changed */ + if (!tz->ops->get_mode || mode != old_mode) + monitor_thermal_zone(tz); + + return 0; +} + void thermal_zone_device_update(struct thermal_zone_device *tz, enum thermal_notify_event event) { diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h index a9bf00e91d64..1ed0bdb812d8 100644 --- a/drivers/thermal/thermal_core.h +++ b/drivers/thermal/thermal_core.h @@ -74,6 +74,8 @@ int thermal_zone_create_device_groups(struct thermal_zone_device *, int); void thermal_zone_destroy_device_groups(struct thermal_zone_device *); void thermal_cooling_device_setup_sysfs(struct thermal_cooling_device *); void thermal_cooling_device_destroy_sysfs(struct thermal_cooling_device *cdev); +int thermal_zone_set_mode(struct thermal_zone_device *tz, + enum thermal_device_mode mode); /* used only at binding time */ ssize_t trip_point_show(struct device *, struct device_attribute *, char *); ssize_t weight_show(struct device *, struct device_attribute *, char *); diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c index 6bfef21abce4..cc1f808b48b3 100644 --- a/drivers/thermal/thermal_sysfs.c +++ b/drivers/thermal/thermal_sysfs.c @@ -68,18 +68,20 @@ mode_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct thermal_zone_device *tz = to_thermal_zone(dev); + enum thermal_device_mode mode; int result; if (!tz->ops->set_mode) return -EPERM; if (!strncmp(buf, "enabled", sizeof("enabled") - 1)) - result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED); + mode = THERMAL_DEVICE_ENABLED; else if (!strncmp(buf, "disabled", sizeof("disabled") - 1)) - result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED); + mode = THERMAL_DEVICE_DISABLED; else - result = -EINVAL; + return -EINVAL; + result = thermal_zone_set_mode(tz, mode); if (result) return result;