From: Lukasz Luba <lukasz.luba@xxxxxxx>
Add device to the Energy Model framework. It will create a dedicated
and unified data structures used i.e. in the thermal framework.
The power model used in dev_pm_opp subsystem is simplified and created
based on DT 'dynamic-power-coefficient', volatage and frequency. It is
similar to the CPU model used in Energy Aware Scheduler.
Signed-off-by: Lukasz Luba <lukasz.luba@xxxxxxx>
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 413987038fbf..d527a5113950 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -105,6 +105,8 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
}
pfdev->devfreq.devfreq = devfreq;
+ dev_pm_opp_of_register_em(dev, NULL);
+
cooling = of_devfreq_cooling_register(dev->of_node, devfreq);
if (IS_ERR(cooling))
DRM_DEV_INFO(dev, "Failed to register cooling device\n");
@@ -118,6 +120,7 @@ void panfrost_devfreq_fini(struct panfrost_device *pfdev)
{
if (pfdev->devfreq.cooling)
devfreq_cooling_unregister(pfdev->devfreq.cooling);
+ dev_pm_opp_of_unregister_em(&pfdev->pdev->dev);
dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
}
--
2.17.1
