}
EXPORT_SYMBOL_GPL(thermal_zone_get_temp);
+void thermal_zone_set_trips(struct thermal_zone_device *tz)
+{
+ int low = -INT_MAX;
+ int high = INT_MAX;
+ int trip_temp, hysteresis;
+ int i, ret;
+
+ mutex_lock(&tz->lock);
+
+ if (!tz->ops->set_trips || !tz->ops->get_trip_hyst)
+ goto exit;
+
+ for (i = 0; i < tz->trips; i++) {
+ int trip_low;
+
+ tz->ops->get_trip_temp(tz, i, &trip_temp);
+ tz->ops->get_trip_hyst(tz, i, &hysteresis);
+
+ trip_low = trip_temp - hysteresis;
+
+ if (trip_low < tz->temperature && trip_low > low)
+ low = trip_low;
+
+ if (trip_temp > tz->temperature && trip_temp < high)
+ high = trip_temp;
+ }
+
+ /* No need to change trip points */
+ if (tz->prev_low_trip == low && tz->prev_high_trip == high)
+ goto exit;
+
+ tz->prev_low_trip = low;
+ tz->prev_high_trip = high;
+
+ dev_dbg(&tz->device,
+ "new temperature boundaries: %d < x < %d\n", low, high);
+
+ /*
+ * Set a temperature window. When this window is left the driver
+ * must inform the thermal core via thermal_zone_device_update.
+ */
+ ret = tz->ops->set_trips(tz, low, high);
+ if (ret)
+ dev_err(&tz->device, "Failed to set trips: %d\n", ret);
+
+exit:
+ mutex_unlock(&tz->lock);
+}
+EXPORT_SYMBOL_GPL(thermal_zone_set_trips);
+
static void update_temperature(struct thermal_zone_device *tz)
{
int temp, ret;
pos->initialized = false;
}
-void thermal_zone_device_update(struct thermal_zone_device *tz)
+void thermal_zone_device_update(struct thermal_zone_device *tz,
+ enum thermal_notify_event event)
{
int count;
update_temperature(tz);
+ thermal_zone_set_trips(tz);
+
+ tz->notify_event = event;
+
for (count = 0; count < tz->trips; count++)
handle_thermal_trip(tz, count);
}
struct thermal_zone_device *tz = container_of(work, struct
thermal_zone_device,
poll_queue.work);
- thermal_zone_device_update(tz);
+ thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
}
/* sys I/F for thermal zone */
if (ret)
return ret;
- thermal_zone_device_update(tz);
+ thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
return count;
}
*/
ret = tz->ops->set_trip_hyst(tz, trip, temperature);
+ if (!ret)
+ thermal_zone_set_trips(tz);
+
return ret ? ret : count;
}
tz->forced_passive = state;
- thermal_zone_device_update(tz);
+ thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
return count;
}
}
if (!ret)
- thermal_zone_device_update(tz);
+ thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
return ret ? ret : count;
}
mutex_lock(&thermal_list_lock);
list_for_each_entry(pos, &thermal_tz_list, node)
if (atomic_cmpxchg(&pos->need_update, 1, 0))
- thermal_zone_device_update(pos);
+ thermal_zone_device_update(pos,
+ THERMAL_EVENT_UNSPECIFIED);
mutex_unlock(&thermal_list_lock);
return cdev;
thermal_zone_device_reset(tz);
/* Update the new thermal zone and mark it as already updated. */
if (atomic_cmpxchg(&tz->need_update, 1, 0))
- thermal_zone_device_update(tz);
+ thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
return tz;
}
EXPORT_SYMBOL_GPL(thermal_zone_get_zone_by_name);
+/**
+ * thermal_zone_get_slope - return the slope attribute of the thermal zone
+ * @tz: thermal zone device with the slope attribute
+ *
+ * Return: If the thermal zone device has a slope attribute, return it, else
+ * return 1.
+ */
+int thermal_zone_get_slope(struct thermal_zone_device *tz)
+{
+ if (tz && tz->tzp)
+ return tz->tzp->slope;
+ return 1;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_get_slope);
+
+/**
+ * thermal_zone_get_offset - return the offset attribute of the thermal zone
+ * @tz: thermal zone device with the offset attribute
+ *
+ * Return: If the thermal zone device has a offset attribute, return it, else
+ * return 0.
+ */
+int thermal_zone_get_offset(struct thermal_zone_device *tz)
+{
+ if (tz && tz->tzp)
+ return tz->tzp->offset;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_get_offset);
+
#ifdef CONFIG_NET
static const struct genl_multicast_group thermal_event_mcgrps[] = {
{ .name = THERMAL_GENL_MCAST_GROUP_NAME, },
atomic_set(&in_suspend, 0);
list_for_each_entry(tz, &thermal_tz_list, node) {
thermal_zone_device_reset(tz);
- thermal_zone_device_update(tz);
+ thermal_zone_device_update(tz,
+ THERMAL_EVENT_UNSPECIFIED);
}
break;
default: