1 // SPDX-License-Identifier: GPL-2.0
18 	last = pfdevfreq->time_last_update;  in panfrost_devfreq_update_utilization()
20 	if (pfdevfreq->busy_count > 0)  in panfrost_devfreq_update_utilization()
21 		pfdevfreq->busy_time += ktime_sub(now, last);  in panfrost_devfreq_update_utilization()
23 		pfdevfreq->idle_time += ktime_sub(now, last);  in panfrost_devfreq_update_utilization()
25 	pfdevfreq->time_last_update = now;  in panfrost_devfreq_update_utilization()
28 static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,  in panfrost_devfreq_target()
43 	pfdevfreq->busy_time = 0;  in panfrost_devfreq_reset()
44 	pfdevfreq->idle_time = 0;  in panfrost_devfreq_reset()
45 	pfdevfreq->time_last_update = ktime_get();  in panfrost_devfreq_reset()
48 static int panfrost_devfreq_get_dev_status(struct device *dev,  in panfrost_devfreq_get_dev_status()
52 	struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;  in panfrost_devfreq_get_dev_status()
55 	status->current_frequency = clk_get_rate(pfdev->clock);  in panfrost_devfreq_get_dev_status()
57 	spin_lock_irqsave(&pfdevfreq->lock, irqflags);  in panfrost_devfreq_get_dev_status()
61 	status->total_time = ktime_to_ns(ktime_add(pfdevfreq->busy_time,  in panfrost_devfreq_get_dev_status()
62 						   pfdevfreq->idle_time));  in panfrost_devfreq_get_dev_status()
64 	status->busy_time = ktime_to_ns(pfdevfreq->busy_time);  in panfrost_devfreq_get_dev_status()
68 	spin_unlock_irqrestore(&pfdevfreq->lock, irqflags);  in panfrost_devfreq_get_dev_status()
70 	dev_dbg(pfdev->dev, "busy %lu total %lu %lu %% freq %lu MHz\n",  in panfrost_devfreq_get_dev_status()
71 		status->busy_time, status->total_time,  in panfrost_devfreq_get_dev_status()
72 		status->busy_time / (status->total_time / 100),  in panfrost_devfreq_get_dev_status()
73 		status->current_frequency / 1000 / 1000);  in panfrost_devfreq_get_dev_status()
90 	struct device *dev = &pfdev->pdev->dev;  in panfrost_devfreq_init()
92 	struct thermal_cooling_device *cooling;  in panfrost_devfreq_init()  local
93 	struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;  in panfrost_devfreq_init()
95 	if (pfdev->comp->num_supplies > 1) {  in panfrost_devfreq_init()
97 		 * GPUs with more than 1 supply require platform-specific handling:  in panfrost_devfreq_init()
104 	ret = devm_pm_opp_set_regulators(dev, pfdev->comp->supply_names);  in panfrost_devfreq_init()
107 		if (ret != -ENODEV) {  in panfrost_devfreq_init()
108 			if (ret != -EPROBE_DEFER)  in panfrost_devfreq_init()
117 		if (ret == -ENODEV)  in panfrost_devfreq_init()
121 	pfdevfreq->opp_of_table_added = true;  in panfrost_devfreq_init()
123 	spin_lock_init(&pfdevfreq->lock);  in panfrost_devfreq_init()
127 	cur_freq = clk_get_rate(pfdev->clock);  in panfrost_devfreq_init()
151 	pfdevfreq->gov_data.upthreshold = 45;  in panfrost_devfreq_init()
152 	pfdevfreq->gov_data.downdifferential = 5;  in panfrost_devfreq_init()
156 					  &pfdevfreq->gov_data);  in panfrost_devfreq_init()
161 	pfdevfreq->devfreq = devfreq;  in panfrost_devfreq_init()
163 	cooling = devfreq_cooling_em_register(devfreq, NULL);  in panfrost_devfreq_init()
164 	if (IS_ERR(cooling))  in panfrost_devfreq_init()
165 		DRM_DEV_INFO(dev, "Failed to register cooling device\n");  in panfrost_devfreq_init()
167 		pfdevfreq->cooling = cooling;  in panfrost_devfreq_init()
174 	struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;  in panfrost_devfreq_fini()
176 	if (pfdevfreq->cooling) {  in panfrost_devfreq_fini()
177 		devfreq_cooling_unregister(pfdevfreq->cooling);  in panfrost_devfreq_fini()
178 		pfdevfreq->cooling = NULL;  in panfrost_devfreq_fini()
184 	struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;  in panfrost_devfreq_resume()
186 	if (!pfdevfreq->devfreq)  in panfrost_devfreq_resume()
191 	devfreq_resume_device(pfdevfreq->devfreq);  in panfrost_devfreq_resume()
196 	struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;  in panfrost_devfreq_suspend()
198 	if (!pfdevfreq->devfreq)  in panfrost_devfreq_suspend()
201 	devfreq_suspend_device(pfdevfreq->devfreq);  in panfrost_devfreq_suspend()
208 	if (!pfdevfreq->devfreq)  in panfrost_devfreq_record_busy()
211 	spin_lock_irqsave(&pfdevfreq->lock, irqflags);  in panfrost_devfreq_record_busy()
215 	pfdevfreq->busy_count++;  in panfrost_devfreq_record_busy()
217 	spin_unlock_irqrestore(&pfdevfreq->lock, irqflags);  in panfrost_devfreq_record_busy()
224 	if (!pfdevfreq->devfreq)  in panfrost_devfreq_record_idle()
227 	spin_lock_irqsave(&pfdevfreq->lock, irqflags);  in panfrost_devfreq_record_idle()
231 	WARN_ON(--pfdevfreq->busy_count < 0);  in panfrost_devfreq_record_idle()
233 	spin_unlock_irqrestore(&pfdevfreq->lock, irqflags);  in panfrost_devfreq_record_idle()