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Thermal: Add Hysteresis attributes

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The Linux Thermal Framework does not support hysteresis
attributes. Most thermal sensors, today, have a
hysteresis value associated with trip points.

This patch adds hysteresis attributes on a per-trip-point
basis, to the Thermal Framework. These attributes are
optionally writable.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Durgadoss R
2012-07-24 23:19:26 -04:00
committed by Len Brown
parent c56f5c0342
commit 27365a6c7d
3 changed files with 94 additions and 5 deletions
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include/linux/thermal.h
+5
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@@ -60,6 +60,10 @@ struct thermal_zone_device_ops {
unsigned long *);
int (*set_trip_temp) (struct thermal_zone_device *, int,
unsigned long);
int (*get_trip_hyst) (struct thermal_zone_device *, int,
unsigned long *);
int (*set_trip_hyst) (struct thermal_zone_device *, int,
unsigned long);
int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *);
int (*notify) (struct thermal_zone_device *, int,
enum thermal_trip_type);
@@ -98,6 +102,7 @@ struct thermal_zone_device {
struct device device;
struct thermal_attr *trip_temp_attrs;
struct thermal_attr *trip_type_attrs;
struct thermal_attr *trip_hyst_attrs;
void *devdata;
int trips;
int tc1;