From: lukasz.luba@arm.com
To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
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lukasz.luba@arm.com
Subject: [PATCH v2 4/4] drm/panfrost: Register to the Energy Model with devfreq device
Date: Thu, 6 Feb 2020 13:46:40 +0000 [thread overview]
Message-ID: <20200206134640.11367-5-lukasz.luba@arm.com> (raw)
In-Reply-To: <20200206134640.11367-1-lukasz.luba@arm.com>
From: Lukasz Luba <lukasz.luba@arm.com>
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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prev parent reply other threads:[~2020-02-06 13:48 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-06 13:46 [PATCH v2 0/4] Add support for devices in the Energy Model lukasz.luba
2020-02-06 13:46 ` [PATCH v2 1/4] PM / EM: add devices to " lukasz.luba
2020-02-07 12:04 ` Quentin Perret
2020-02-07 15:59 ` Lukasz Luba
2020-02-13 10:59 ` Dietmar Eggemann
2020-02-13 15:25 ` Lukasz Luba
2020-02-06 13:46 ` [PATCH v2 2/4] OPP: change parameter to device pointer in dev_pm_opp_of_register_em() lukasz.luba
2020-02-06 13:46 ` [PATCH v2 3/4] thermal: devfreq_cooling: Refactor code and switch to use Energy Model lukasz.luba
2020-02-08 9:51 ` kbuild test robot
2020-02-08 10:39 ` kbuild test robot
2020-02-06 13:46 ` lukasz.luba [this message]
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