From: Durgadoss R <durgadoss.r@intel.com>
To: lenb@kernel.org, rui.zhang@intel.com
Cc: linux-acpi@vger.kernel.org, eduardo.valentin@ti.com,
Durgadoss R <durgadoss.r@intel.com>
Subject: [PATCHv2 03/14] Thermal: Add get trend, get instance API's to thermal_sys
Date: Mon, 27 Aug 2012 09:58:15 +0530 [thread overview]
Message-ID: <1346041706-29642-4-git-send-email-durgadoss.r@intel.com> (raw)
In-Reply-To: <1346041706-29642-1-git-send-email-durgadoss.r@intel.com>
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 <durgadoss.r@intel.com>
---
drivers/thermal/thermal_sys.c | 40 ++++++++++++++++++++++++++++++++++++++++
include/linux/thermal.h | 4 ++++
2 files changed, 44 insertions(+)
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 0e71b00..5e141b5 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
--
1.7.9.5
next prev parent reply other threads:[~2012-08-27 4:29 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-27 4:28 [PATCHv2 00/14] Thermal Framework Enhancements Durgadoss R
2012-08-27 4:28 ` [PATCHv2 01/14] Thermal: Refactor thermal.h file Durgadoss R
2012-08-27 4:28 ` [PATCHv2 02/14] Thermal: Move thermal_instance to thermal_core.h Durgadoss R
2012-08-27 4:28 ` Durgadoss R [this message]
2012-08-27 8:11 ` [PATCHv2 03/14] Thermal: Add get trend, get instance API's to thermal_sys Zhang, Rui
2012-08-27 8:47 ` R, Durgadoss
2012-08-27 9:19 ` Zhang, Rui
2012-08-27 9:24 ` R, Durgadoss
2012-08-27 4:28 ` [PATCHv2 04/14] Thermal: Add platform level information to thermal.h Durgadoss R
2012-08-27 8:27 ` Zhang, Rui
2012-08-27 8:57 ` R, Durgadoss
2012-08-27 9:22 ` Zhang, Rui
2012-08-27 9:25 ` R, Durgadoss
2012-08-27 4:28 ` [PATCHv2 05/14] Thermal: Obtain platform data for thermal zone Durgadoss R
2012-08-27 8:29 ` Zhang, Rui
2012-08-27 8:59 ` R, Durgadoss
2012-08-27 4:28 ` [PATCHv2 06/14] Thermal: Add a policy sysfs attribute Durgadoss R
2012-08-27 8:31 ` Zhang, Rui
2012-08-27 9:02 ` R, Durgadoss
2012-08-27 9:25 ` Zhang, Rui
2012-08-27 10:23 ` R, Durgadoss
2012-08-27 10:44 ` Zhang, Rui
2012-08-27 9:35 ` Zhang, Rui
2012-08-27 10:25 ` R, Durgadoss
2012-08-27 4:28 ` [PATCHv2 07/14] Thermal: Update binding logic based on platform data Durgadoss R
2012-08-27 9:50 ` Zhang, Rui
2012-08-27 10:29 ` R, Durgadoss
2012-08-27 4:28 ` [PATCHv2 08/14] Thermal: Make thermal_cdev_update as a global function Durgadoss R
2012-08-27 4:28 ` [PATCHv2 09/14] Thermal: Introduce fair_share thermal governor Durgadoss R
2012-08-27 4:28 ` [PATCHv2 10/14] Thermal: Introduce a step_wise " Durgadoss R
2012-08-27 4:28 ` [PATCHv2 11/14] Thermal: Remove throttling logic out of thermal_sys.c Durgadoss R
2012-08-27 4:28 ` [PATCHv2 12/14] Thermal: Add a notification API Durgadoss R
2012-08-27 4:28 ` [PATCHv2 13/14] Thermal: Add documentation for platform layer data Durgadoss R
2012-08-27 4:28 ` [PATCHv2 14/14] Thermal: Platform layer changes to provide thermal data Durgadoss R
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