Thermal: Introduce multiple cooling states support (e3f25e6e) · Commits · 戴 / test

This is because general active cooling devices, like fans, may have multiple speeds, which can be mapped to different cooling states. Signed-off-by:

drivers/thermal/thermal_sys.c

+10 −2

Original line number	Diff line number	Diff line
		@@ -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: