From patchwork Sun Dec 2 14:44:37 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhang, Rui" X-Patchwork-Id: 1830541 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 2A7DE3FCA5 for ; Sun, 2 Dec 2012 14:45:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751846Ab2LBOpf (ORCPT ); Sun, 2 Dec 2012 09:45:35 -0500 Received: from mga03.intel.com ([143.182.124.21]:16529 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751518Ab2LBOpe (ORCPT ); Sun, 2 Dec 2012 09:45:34 -0500 Received: from azsmga002.ch.intel.com ([10.2.17.35]) by azsmga101.ch.intel.com with ESMTP; 02 Dec 2012 06:45:33 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,201,1355126400"; d="scan'208";a="175055518" Received: from unknown (HELO rzhang1-mobl4.ccr.corp.intel.com) ([10.255.21.163]) by AZSMGA002.ch.intel.com with ESMTP; 02 Dec 2012 06:45:12 -0800 From: Zhang Rui To: linux-pm@vger.kernel.org Cc: Durgadoss R , Zhang Rui Subject: [PATCH 03/34] Thermal: Add get trend, get instance API's to thermal_sys Date: Sun, 2 Dec 2012 22:44:37 +0800 Message-Id: <1354459508-3707-3-git-send-email-rui.zhang@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1354459508-3707-1-git-send-email-rui.zhang@intel.com> References: <1354459508-3707-1-git-send-email-rui.zhang@intel.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Durgadoss R This patch adds the following API's to thermal_sys.c, that can be used by other Thermal drivers. * get_tz_trend: obtain the trend of the given thermal zone * get_thermal_instance: obtain the instance corresponding to the given tz, cdev and the trip point. Signed-off-by: Durgadoss R Signed-off-by: Zhang Rui --- drivers/thermal/thermal_sys.c | 40 ++++++++++++++++++++++++++++++++++++++++ include/linux/thermal.h | 4 ++++ 2 files changed, 44 insertions(+), 0 deletions(-) diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c index bbc8346..1f98c56 100644 --- a/drivers/thermal/thermal_sys.c +++ b/drivers/thermal/thermal_sys.c @@ -82,6 +82,46 @@ static void release_idr(struct idr *idr, struct mutex *lock, int id) mutex_unlock(lock); } +int get_tz_trend(struct thermal_zone_device *tz, int trip) +{ + enum thermal_trend trend; + + if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) { + if (tz->temperature > tz->last_temperature) + trend = THERMAL_TREND_RAISING; + else if (tz->temperature < tz->last_temperature) + trend = THERMAL_TREND_DROPPING; + else + trend = THERMAL_TREND_STABLE; + } + + return trend; +} +EXPORT_SYMBOL(get_tz_trend); + +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz, + struct thermal_cooling_device *cdev, int trip) +{ + struct thermal_instance *pos = NULL; + struct thermal_instance *target_instance = NULL; + + mutex_lock(&tz->lock); + mutex_lock(&cdev->lock); + + list_for_each_entry(pos, &tz->thermal_instances, tz_node) { + if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) { + target_instance = pos; + break; + } + } + + mutex_unlock(&cdev->lock); + mutex_unlock(&tz->lock); + + return target_instance; +} +EXPORT_SYMBOL(get_thermal_instance); + /* sys I/F for thermal zone */ #define to_thermal_zone(_dev) \ diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 8611e3e..32af124 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -185,6 +185,10 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, const struct thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); +int get_tz_trend(struct thermal_zone_device *, int); +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, + struct thermal_cooling_device *, int); + #ifdef CONFIG_NET extern int thermal_generate_netlink_event(u32 orig, enum events event); #else