1 // SPDX-License-Identifier: GPL-2.0
35 	mutex_lock(&tz->lock);  in thermal_zone_for_each_trip()
37 	mutex_unlock(&tz->lock);  in thermal_zone_for_each_trip()
45 	return tz->num_trips;  in thermal_zone_get_num_trips()
50  * __thermal_zone_set_trips - Computes the next trip points for the driver
51  * @tz: a pointer to a thermal zone device structure
54  * the trip points. The result is the closer low and high trip points
55  * to the current temperature. These values are passed to the backend
56  * driver to let it set its own notification mechanism (usually an
59  * This function must be called with tz->lock held. Both tz and tz->ops
67 	int low = -INT_MAX, high = INT_MAX;  in __thermal_zone_set_trips()  local
71 	lockdep_assert_held(&tz->lock);  in __thermal_zone_set_trips()
73 	if (!tz->ops->set_trips)  in __thermal_zone_set_trips()
80 		trip_low = trip->temperature - trip->hysteresis;  in __thermal_zone_set_trips()
82 		if (trip_low < tz->temperature && trip_low > low) {  in __thermal_zone_set_trips()
83 			low = trip_low;  in __thermal_zone_set_trips()
88 		if (trip->temperature > tz->temperature &&  in __thermal_zone_set_trips()
89 		    trip->temperature < high) {  in __thermal_zone_set_trips()
90 			high = trip->temperature;  in __thermal_zone_set_trips()
95 	/* No need to change trip points */  in __thermal_zone_set_trips()
96 	if (tz->prev_low_trip == low && tz->prev_high_trip == high)  in __thermal_zone_set_trips()
100 	 * If "high" and "low" are the same, skip the change unless this is the  in __thermal_zone_set_trips()
103 	if (same_trip && (tz->prev_low_trip != -INT_MAX ||  in __thermal_zone_set_trips()
104 	    tz->prev_high_trip != INT_MAX))  in __thermal_zone_set_trips()
107 	tz->prev_low_trip = low;  in __thermal_zone_set_trips()
108 	tz->prev_high_trip = high;  in __thermal_zone_set_trips()
110 	dev_dbg(&tz->device,  in __thermal_zone_set_trips()
111 		"new temperature boundaries: %d < x < %d\n", low, high);  in __thermal_zone_set_trips()
117 	ret = tz->ops->set_trips(tz, low, high);  in __thermal_zone_set_trips()
119 		dev_err(&tz->device, "Failed to set trips: %d\n", ret);  in __thermal_zone_set_trips()
125 	if (!tz || !tz->trips || trip_id < 0 || trip_id >= tz->num_trips || !trip)  in __thermal_zone_get_trip()
126 		return -EINVAL;  in __thermal_zone_get_trip()
128 	*trip = tz->trips[trip_id];  in __thermal_zone_get_trip()
138 	mutex_lock(&tz->lock);  in thermal_zone_get_trip()
140 	mutex_unlock(&tz->lock);  in thermal_zone_get_trip()
150 	 * Assume the trip to be located within the bounds of the thermal  in thermal_zone_trip_id()
153 	return trip - tz->trips;  in thermal_zone_trip_id()
165 	if (trip->temperature == temp)  in thermal_zone_set_trip_temp()
168 	trip->temperature = temp;  in thermal_zone_set_trip_temp()