From patchwork Thu Jul 19 06:31:08 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Rui X-Patchwork-Id: 1215501 Return-Path: X-Original-To: patchwork-linux-acpi@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 71B7F3FD4F for ; Thu, 19 Jul 2012 06:32:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752567Ab2GSGbp (ORCPT ); Thu, 19 Jul 2012 02:31:45 -0400 Received: from mga14.intel.com ([143.182.124.37]:61928 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752402Ab2GSGbn (ORCPT ); Thu, 19 Jul 2012 02:31:43 -0400 Received: from azsmga001.ch.intel.com ([10.2.17.19]) by azsmga102.ch.intel.com with ESMTP; 18 Jul 2012 23:31:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.71,315,1320652800"; d="scan'208";a="170231159" Received: from rui-x220.sh.intel.com ([10.239.197.100]) by azsmga001.ch.intel.com with ESMTP; 18 Jul 2012 23:31:40 -0700 From: Zhang Rui To: linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org Cc: "Rafael J. Wysocki" , Matthew Garrett , Len Brown , R Durgadoss , Eduardo Valentin , Amit Kachhap , Wei Ni , Zhang Rui Subject: [PATCH 04/16] Thermal: Introduce multiple cooling states support Date: Thu, 19 Jul 2012 14:31:08 +0800 Message-Id: <1342679480-5336-5-git-send-email-rui.zhang@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1342679480-5336-1-git-send-email-rui.zhang@intel.com> References: <1342679480-5336-1-git-send-email-rui.zhang@intel.com> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org This is because general active cooling devices, like fans, may have multiple speeds, which can be mapped to different cooling states. Signed-off-by: Zhang Rui --- drivers/thermal/thermal_sys.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c index 95e0d63..63927e3 100644 --- a/drivers/thermal/thermal_sys.c +++ b/drivers/thermal/thermal_sys.c @@ -1059,6 +1059,7 @@ void thermal_zone_device_update(struct thermal_zone_device *tz) enum thermal_trip_type trip_type; struct thermal_cooling_device_instance *instance; struct thermal_cooling_device *cdev; + unsigned long cur_state, max_state; mutex_lock(&tz->lock); @@ -1098,10 +1099,17 @@ void thermal_zone_device_update(struct thermal_zone_device *tz) cdev = instance->cdev; + cdev->ops->get_cur_state(cdev, &cur_state); + cdev->ops->get_max_state(cdev, &max_state); + if (temp >= trip_temp) - cdev->ops->set_cur_state(cdev, 1); + cur_state = cur_state < max_state ? + (cur_state + 1) : max_state; else - cdev->ops->set_cur_state(cdev, 0); + cur_state = cur_state > 0 ? + (cur_state - 1) : 0; + + cdev->ops->set_cur_state(cdev, cur_state); } break; case THERMAL_TRIP_PASSIVE: