Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752607Ab2JIGCg (ORCPT ); Tue, 9 Oct 2012 02:02:36 -0400 Received: from mail-qc0-f174.google.com ([209.85.216.174]:38957 "EHLO mail-qc0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751726Ab2JIGCZ (ORCPT ); Tue, 9 Oct 2012 02:02:25 -0400 From: Len Brown To: linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Zhang Rui Subject: [PATCH 01/30] Thermal: Introduce multiple cooling states support Date: Tue, 9 Oct 2012 01:53:51 -0400 Message-Id: X-Mailer: git-send-email 1.8.0.rc1 In-Reply-To: <1349762060-25334-1-git-send-email-lenb@kernel.org> References: <1349762060-25334-1-git-send-email-lenb@kernel.org> Reply-To: Len Brown Organization: Intel Open Source Technology Center Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1721 Lines: 52 From: Zhang Rui 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 Reviewed-by: Rafael J. Wysocki Reviewed-by: Valentin, Eduardo --- 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 2ab31e4..dc4044b 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: -- 1.8.0.rc1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/