3  * A devfreq driver for NVIDIA Tegra SoCs
11 #include <linux/devfreq.h>
180 	struct devfreq		*devfreq;  member
255 	u32 band = avg_band_freq * tegra->devfreq->profile->polling_ms;  in tegra_devfreq_update_avg_wmark()
268 	u32 val = tegra->cur_freq * tegra->devfreq->profile->polling_ms;  in tegra_devfreq_update_wmark()
347 	target_freq = dev->avg_count / tegra->devfreq->profile->polling_ms;  in actmon_device_target_freq()
381 	mutex_lock(&tegra->devfreq->lock);  in actmon_thread_isr()
392 		update_devfreq(tegra->devfreq);  in actmon_thread_isr()
394 	mutex_unlock(&tegra->devfreq->lock);  in actmon_thread_isr()
428 	mutex_lock(&tegra->devfreq->lock);  in tegra_actmon_delayed_update()
429 	update_devfreq(tegra->devfreq);  in tegra_actmon_delayed_update()
430 	mutex_unlock(&tegra->devfreq->lock);  in tegra_actmon_delayed_update()
470 	if (mutex_trylock(&tegra->devfreq->lock)) {  in tegra_actmon_cpu_notify_cb()
473 		mutex_unlock(&tegra->devfreq->lock);  in tegra_actmon_cpu_notify_cb()
477 		 * the moment, then there is no need to update the devfreq's  in tegra_actmon_cpu_notify_cb()
507 	dev->avg_count = tegra->cur_freq * tegra->devfreq->profile->polling_ms;  in tegra_actmon_configure_device()
548 	if (!tegra->devfreq->profile->polling_ms || !tegra->started)  in tegra_actmon_resume()
551 	actmon_writel(tegra, tegra->devfreq->profile->polling_ms - 1,  in tegra_actmon_resume()
562 		dev_err(tegra->devfreq->dev.parent,  in tegra_actmon_resume()
582 		dev_err(tegra->devfreq->dev.parent,  in tegra_actmon_resume()
616 	if (!tegra->devfreq->profile->polling_ms || !tegra->started)  in tegra_actmon_pause()
679 	stat->total_time = tegra->devfreq->profile->polling_ms * cur_freq;  in tegra_devfreq_get_dev_status()
693 static int tegra_governor_get_target(struct devfreq *devfreq,  in tegra_governor_get_target()  argument
703 	err = devfreq_update_stats(devfreq);  in tegra_governor_get_target()
707 	stat = &devfreq->last_status;  in tegra_governor_get_target()
720 	 * tegra-devfreq driver operates with KHz units, while OPP table  in tegra_governor_get_target()
722 	 * devfreq core.  in tegra_governor_get_target()
729 static int tegra_governor_event_handler(struct devfreq *devfreq,  in tegra_governor_event_handler()  argument
732 	struct tegra_devfreq *tegra = dev_get_drvdata(devfreq->dev.parent);  in tegra_governor_event_handler()
737 	 * Couple devfreq-device with the governor early because it is  in tegra_governor_event_handler()
740 	tegra->devfreq = devfreq;  in tegra_governor_event_handler()
744 		devfreq_monitor_start(devfreq);  in tegra_governor_event_handler()
750 		devfreq_monitor_stop(devfreq);  in tegra_governor_event_handler()
764 		devfreq_update_interval(devfreq, new_delay);  in tegra_governor_event_handler()
770 		devfreq_monitor_suspend(devfreq);  in tegra_governor_event_handler()
774 		devfreq_monitor_resume(devfreq);  in tegra_governor_event_handler()
838 	struct devfreq *devfreq;  in tegra_devfreq_probe()  local
887 					"tegra-devfreq", tegra);  in tegra_devfreq_probe()
939 	devfreq = devm_devfreq_add_device(&pdev->dev, &tegra_devfreq_profile,  in tegra_devfreq_probe()
941 	if (IS_ERR(devfreq)) {  in tegra_devfreq_probe()
942 		dev_err(&pdev->dev, "Failed to add device: %pe\n", devfreq);  in tegra_devfreq_probe()
943 		return PTR_ERR(devfreq);  in tegra_devfreq_probe()
975 		.name = "tegra-devfreq",
982 MODULE_DESCRIPTION("Tegra devfreq driver");