[PATCH v3 4/4] drm/panfrost: Register to the Energy Model with devfreq device
From: Lukasz Luba <lukasz.luba@arm.com>
Date: 2020-02-21 19:48:40
Also in:
dri-devel, linux-arm-kernel, linux-arm-msm, linux-omap, linux-pm, lkml
Subsystem:
arm mali panfrost drm driver, drm drivers, drm drivers and misc gpu patches, the rest · Maintainers:
Boris Brezillon, Rob Herring, Steven Price, Adrián Larumbe, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Linus Torvalds
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@arm.com> --- 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
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