diff options
Diffstat (limited to 'drivers/gpu/drm/panfrost/panfrost_devfreq.c')
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_devfreq.c | 32 |
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); } |