Function rt_thermal_zone_device_update

components/drivers/thermal/thermal.c:552–715

}

void rt_thermal_zone_device_update(struct rt_thermal_zone_device *zdev, rt_ubase_t msg)
{
    rt_err_t err;
    rt_bool_t passive = RT_FALSE, need_cool = RT_FALSE;
    struct rt_thermal_notifier *notifier, *next_notifier;

    RT_ASSERT(zdev != RT_NULL);

    if (!rt_interrupt_get_nest())
    {
        rt_mutex_take(&zdev->mutex, RT_WAITING_FOREVER);
    }

    /* Check thermal zone status */
    if (msg == RT_THERMAL_MSG_DEVICE_DOWN)
    {
        zdev->enabled = RT_FALSE;
    }
    else if (msg == RT_THERMAL_MSG_DEVICE_UP)
    {
        zdev->enabled = RT_TRUE;
    }

    /* Read temperature */
    zdev->last_temperature = zdev->temperature;
    zdev->ops->get_temp(zdev, &zdev->temperature);

    for (int i = 0; i < zdev->trips_nr; ++i)
    {
        struct rt_thermal_trip *tmp_trip = &zdev->trips[i];

        if (zdev->temperature <= tmp_trip->temperature)
        {
            continue;
        }

        switch (tmp_trip->type)
        {
        case RT_THERMAL_TRIP_PASSIVE:
            passive = RT_TRUE;
            goto cooling;

        case RT_THERMAL_TRIP_CRITICAL:
            if (zdev->ops->critical)
            {
                zdev->ops->critical(zdev);
            }
            else if (zdev->last_temperature > tmp_trip->temperature)
            {
                /* Tried to cool already, but failed */
                rt_hw_cpu_reset();
            }
            else
            {
                goto cooling;
            }
            break;