9 #include <linux/devfreq.h>
19 static void lima_devfreq_update_utilization(struct lima_devfreq *devfreq)  in lima_devfreq_update_utilization()  argument
24 	last = devfreq->time_last_update;  in lima_devfreq_update_utilization()
26 	if (devfreq->busy_count > 0)  in lima_devfreq_update_utilization()
27 		devfreq->busy_time += ktime_sub(now, last);  in lima_devfreq_update_utilization()
29 		devfreq->idle_time += ktime_sub(now, last);  in lima_devfreq_update_utilization()
31 	devfreq->time_last_update = now;  in lima_devfreq_update_utilization()
52 static void lima_devfreq_reset(struct lima_devfreq *devfreq)  in lima_devfreq_reset()  argument
54 	devfreq->busy_time = 0;  in lima_devfreq_reset()
55 	devfreq->idle_time = 0;  in lima_devfreq_reset()
56 	devfreq->time_last_update = ktime_get();  in lima_devfreq_reset()
63 	struct lima_devfreq *devfreq = &ldev->devfreq;  in lima_devfreq_get_dev_status()  local
68 	spin_lock_irqsave(&devfreq->lock, irqflags);  in lima_devfreq_get_dev_status()
70 	lima_devfreq_update_utilization(devfreq);  in lima_devfreq_get_dev_status()
72 	status->total_time = ktime_to_ns(ktime_add(devfreq->busy_time,  in lima_devfreq_get_dev_status()
73 						   devfreq->idle_time));  in lima_devfreq_get_dev_status()
74 	status->busy_time = ktime_to_ns(devfreq->busy_time);  in lima_devfreq_get_dev_status()
76 	lima_devfreq_reset(devfreq);  in lima_devfreq_get_dev_status()
78 	spin_unlock_irqrestore(&devfreq->lock, irqflags);  in lima_devfreq_get_dev_status()
96 	struct lima_devfreq *devfreq = &ldev->devfreq;  in lima_devfreq_fini()  local
98 	if (devfreq->cooling) {  in lima_devfreq_fini()
99 		devfreq_cooling_unregister(devfreq->cooling);  in lima_devfreq_fini()
100 		devfreq->cooling = NULL;  in lima_devfreq_fini()
103 	if (devfreq->devfreq) {  in lima_devfreq_fini()
104 		devm_devfreq_remove_device(ldev->dev, devfreq->devfreq);  in lima_devfreq_fini()
105 		devfreq->devfreq = NULL;  in lima_devfreq_fini()
108 	if (devfreq->opp_of_table_added) {  in lima_devfreq_fini()
110 		devfreq->opp_of_table_added = false;  in lima_devfreq_fini()
113 	if (devfreq->regulators_opp_table) {  in lima_devfreq_fini()
114 		dev_pm_opp_put_regulators(devfreq->regulators_opp_table);  in lima_devfreq_fini()
115 		devfreq->regulators_opp_table = NULL;  in lima_devfreq_fini()
118 	if (devfreq->clkname_opp_table) {  in lima_devfreq_fini()
119 		dev_pm_opp_put_clkname(devfreq->clkname_opp_table);  in lima_devfreq_fini()
120 		devfreq->clkname_opp_table = NULL;  in lima_devfreq_fini()
129 	struct devfreq *devfreq;  in lima_devfreq_init()  local
130 	struct lima_devfreq *ldevfreq = &ldev->devfreq;  in lima_devfreq_init()
136 		/* Optional, continue without devfreq */  in lima_devfreq_init()
180 	devfreq = devm_devfreq_add_device(dev, &lima_devfreq_profile,  in lima_devfreq_init()
182 	if (IS_ERR(devfreq)) {  in lima_devfreq_init()
183 		dev_err(dev, "Couldn't initialize GPU devfreq\n");  in lima_devfreq_init()
184 		ret = PTR_ERR(devfreq);  in lima_devfreq_init()
188 	ldevfreq->devfreq = devfreq;  in lima_devfreq_init()
190 	cooling = of_devfreq_cooling_register(dev->of_node, devfreq);  in lima_devfreq_init()
203 void lima_devfreq_record_busy(struct lima_devfreq *devfreq)  in lima_devfreq_record_busy()  argument
207 	if (!devfreq->devfreq)  in lima_devfreq_record_busy()
210 	spin_lock_irqsave(&devfreq->lock, irqflags);  in lima_devfreq_record_busy()
212 	lima_devfreq_update_utilization(devfreq);  in lima_devfreq_record_busy()
214 	devfreq->busy_count++;  in lima_devfreq_record_busy()
216 	spin_unlock_irqrestore(&devfreq->lock, irqflags);  in lima_devfreq_record_busy()
219 void lima_devfreq_record_idle(struct lima_devfreq *devfreq)  in lima_devfreq_record_idle()  argument
223 	if (!devfreq->devfreq)  in lima_devfreq_record_idle()
226 	spin_lock_irqsave(&devfreq->lock, irqflags);  in lima_devfreq_record_idle()
228 	lima_devfreq_update_utilization(devfreq);  in lima_devfreq_record_idle()
230 	WARN_ON(--devfreq->busy_count < 0);  in lima_devfreq_record_idle()
232 	spin_unlock_irqrestore(&devfreq->lock, irqflags);  in lima_devfreq_record_idle()
235 int lima_devfreq_resume(struct lima_devfreq *devfreq)  in lima_devfreq_resume()  argument
239 	if (!devfreq->devfreq)  in lima_devfreq_resume()
242 	spin_lock_irqsave(&devfreq->lock, irqflags);  in lima_devfreq_resume()
244 	lima_devfreq_reset(devfreq);  in lima_devfreq_resume()
246 	spin_unlock_irqrestore(&devfreq->lock, irqflags);  in lima_devfreq_resume()
248 	return devfreq_resume_device(devfreq->devfreq);  in lima_devfreq_resume()
251 int lima_devfreq_suspend(struct lima_devfreq *devfreq)  in lima_devfreq_suspend()  argument
253 	if (!devfreq->devfreq)  in lima_devfreq_suspend()
256 	return devfreq_suspend_device(devfreq->devfreq);  in lima_devfreq_suspend()