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path: root/drivers/gpu/drm/panfrost/panfrost_devfreq.c
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Diffstat (limited to 'drivers/gpu/drm/panfrost/panfrost_devfreq.c')
-rw-r--r--drivers/gpu/drm/panfrost/panfrost_devfreq.c32
1 files changed, 21 insertions, 11 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 536ba93b0f46..413987038fbf 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright 2019 Collabora ltd. */
#include <linux/devfreq.h>
+#include <linux/devfreq_cooling.h>
#include <linux/platform_device.h>
#include <linux/pm_opp.h>
#include <linux/clk.h>
@@ -74,8 +75,11 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
int ret;
struct dev_pm_opp *opp;
unsigned long cur_freq;
+ struct device *dev = &pfdev->pdev->dev;
+ struct devfreq *devfreq;
+ struct thermal_cooling_device *cooling;
- ret = dev_pm_opp_of_add_table(&pfdev->pdev->dev);
+ ret = dev_pm_opp_of_add_table(dev);
if (ret == -ENODEV) /* Optional, continue without devfreq */
return 0;
else if (ret)
@@ -85,29 +89,35 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
cur_freq = clk_get_rate(pfdev->clock);
- opp = devfreq_recommended_opp(&pfdev->pdev->dev, &cur_freq, 0);
+ opp = devfreq_recommended_opp(dev, &cur_freq, 0);
if (IS_ERR(opp))
return PTR_ERR(opp);
panfrost_devfreq_profile.initial_freq = cur_freq;
dev_pm_opp_put(opp);
- pfdev->devfreq.devfreq = devm_devfreq_add_device(&pfdev->pdev->dev,
- &panfrost_devfreq_profile, DEVFREQ_GOV_SIMPLE_ONDEMAND,
- NULL);
- if (IS_ERR(pfdev->devfreq.devfreq)) {
- DRM_DEV_ERROR(&pfdev->pdev->dev, "Couldn't initialize GPU devfreq\n");
- ret = PTR_ERR(pfdev->devfreq.devfreq);
- pfdev->devfreq.devfreq = NULL;
- dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
- return ret;
+ devfreq = devm_devfreq_add_device(dev, &panfrost_devfreq_profile,
+ DEVFREQ_GOV_SIMPLE_ONDEMAND, NULL);
+ if (IS_ERR(devfreq)) {
+ DRM_DEV_ERROR(dev, "Couldn't initialize GPU devfreq\n");
+ dev_pm_opp_of_remove_table(dev);
+ return PTR_ERR(devfreq);
}
+ pfdev->devfreq.devfreq = devfreq;
+
+ cooling = of_devfreq_cooling_register(dev->of_node, devfreq);
+ if (IS_ERR(cooling))
+ DRM_DEV_INFO(dev, "Failed to register cooling device\n");
+ else
+ pfdev->devfreq.cooling = cooling;
return 0;
}
void panfrost_devfreq_fini(struct panfrost_device *pfdev)
{
+ if (pfdev->devfreq.cooling)
+ devfreq_cooling_unregister(pfdev->devfreq.cooling);
dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
}