92 enum hpd_pin intel_hpd_pin_default(struct drm_i915_private *dev_priv,  in intel_hpd_pin_default()  argument
148 static bool intel_hpd_irq_storm_detect(struct drm_i915_private *dev_priv,  in intel_hpd_irq_storm_detect()  argument
151 	struct intel_hotplug *hpd = &dev_priv->display.hotplug;  in intel_hpd_irq_storm_detect()
159 	    (!long_hpd && !dev_priv->display.hotplug.hpd_short_storm_enabled))  in intel_hpd_irq_storm_detect()
170 		drm_dbg_kms(&dev_priv->drm,  in intel_hpd_irq_storm_detect()
174 		drm_dbg_kms(&dev_priv->drm,  in intel_hpd_irq_storm_detect()
224 intel_hpd_irq_storm_switch_to_polling(struct drm_i915_private *dev_priv)  in intel_hpd_irq_storm_switch_to_polling()  argument
230 	lockdep_assert_held(&dev_priv->irq_lock);  in intel_hpd_irq_storm_switch_to_polling()
232 	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);  in intel_hpd_irq_storm_switch_to_polling()
241 		    dev_priv->display.hotplug.stats[pin].state != HPD_MARK_DISABLED)  in intel_hpd_irq_storm_switch_to_polling()
244 		drm_info(&dev_priv->drm,  in intel_hpd_irq_storm_switch_to_polling()
249 		dev_priv->display.hotplug.stats[pin].state = HPD_DISABLED;  in intel_hpd_irq_storm_switch_to_polling()
258 		drm_kms_helper_poll_reschedule(&dev_priv->drm);  in intel_hpd_irq_storm_switch_to_polling()
259 		mod_delayed_detection_work(dev_priv,  in intel_hpd_irq_storm_switch_to_polling()
260 					   &dev_priv->display.hotplug.reenable_work,  in intel_hpd_irq_storm_switch_to_polling()
267 	struct drm_i915_private *dev_priv =  in intel_hpd_irq_storm_reenable_work()  local
268 		container_of(work, typeof(*dev_priv),  in intel_hpd_irq_storm_reenable_work()
275 	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);  in intel_hpd_irq_storm_reenable_work()
277 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_irq_storm_reenable_work()
279 	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);  in intel_hpd_irq_storm_reenable_work()
283 		    dev_priv->display.hotplug.stats[pin].state != HPD_DISABLED)  in intel_hpd_irq_storm_reenable_work()
287 			drm_dbg(&dev_priv->drm,  in intel_hpd_irq_storm_reenable_work()
295 		if (dev_priv->display.hotplug.stats[pin].state == HPD_DISABLED)  in intel_hpd_irq_storm_reenable_work()
296 			dev_priv->display.hotplug.stats[pin].state = HPD_ENABLED;  in intel_hpd_irq_storm_reenable_work()
299 	intel_hpd_irq_setup(dev_priv);  in intel_hpd_irq_storm_reenable_work()
301 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_irq_storm_reenable_work()
303 	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);  in intel_hpd_irq_storm_reenable_work()
354 	struct drm_i915_private *dev_priv =  in i915_digport_work_func()  local
360 	spin_lock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
361 	long_port_mask = dev_priv->display.hotplug.long_port_mask;  in i915_digport_work_func()
362 	dev_priv->display.hotplug.long_port_mask = 0;  in i915_digport_work_func()
363 	short_port_mask = dev_priv->display.hotplug.short_port_mask;  in i915_digport_work_func()
364 	dev_priv->display.hotplug.short_port_mask = 0;  in i915_digport_work_func()
365 	spin_unlock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
367 	for_each_intel_encoder(&dev_priv->drm, encoder) {  in i915_digport_work_func()
392 		spin_lock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
393 		dev_priv->display.hotplug.event_bits |= old_bits;  in i915_digport_work_func()
394 		queue_delayed_detection_work(dev_priv,  in i915_digport_work_func()
395 					     &dev_priv->display.hotplug.hotplug_work, 0);  in i915_digport_work_func()
396 		spin_unlock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
423 	struct drm_i915_private *dev_priv =  in i915_hotplug_work_func()  local
434 	mutex_lock(&dev_priv->drm.mode_config.mutex);  in i915_hotplug_work_func()
435 	drm_dbg_kms(&dev_priv->drm, "running encoder hotplug functions\n");  in i915_hotplug_work_func()
437 	spin_lock_irq(&dev_priv->irq_lock);  in i915_hotplug_work_func()
439 	hpd_event_bits = dev_priv->display.hotplug.event_bits;  in i915_hotplug_work_func()
440 	dev_priv->display.hotplug.event_bits = 0;  in i915_hotplug_work_func()
441 	hpd_retry_bits = dev_priv->display.hotplug.retry_bits;  in i915_hotplug_work_func()
442 	dev_priv->display.hotplug.retry_bits = 0;  in i915_hotplug_work_func()
445 	intel_hpd_irq_storm_switch_to_polling(dev_priv);  in i915_hotplug_work_func()
447 	spin_unlock_irq(&dev_priv->irq_lock);  in i915_hotplug_work_func()
450 	if (dev_priv->display.hotplug.ignore_long_hpd) {  in i915_hotplug_work_func()
451 		drm_dbg_kms(&dev_priv->drm, "Ignore HPD flag on - skip encoder hotplug handlers\n");  in i915_hotplug_work_func()
452 		mutex_unlock(&dev_priv->drm.mode_config.mutex);  in i915_hotplug_work_func()
456 	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);  in i915_hotplug_work_func()
475 			drm_dbg_kms(&dev_priv->drm,  in i915_hotplug_work_func()
498 	mutex_unlock(&dev_priv->drm.mode_config.mutex);  in i915_hotplug_work_func()
503 		drm_kms_helper_hotplug_event(&dev_priv->drm);  in i915_hotplug_work_func()
511 		spin_lock_irq(&dev_priv->irq_lock);  in i915_hotplug_work_func()
512 		dev_priv->display.hotplug.retry_bits |= retry;  in i915_hotplug_work_func()
514 		mod_delayed_detection_work(dev_priv,  in i915_hotplug_work_func()
515 					   &dev_priv->display.hotplug.hotplug_work,  in i915_hotplug_work_func()
517 		spin_unlock_irq(&dev_priv->irq_lock);  in i915_hotplug_work_func()
538 void intel_hpd_irq_handler(struct drm_i915_private *dev_priv,  in intel_hpd_irq_handler()  argument
551 	spin_lock(&dev_priv->irq_lock);  in intel_hpd_irq_handler()
559 	for_each_intel_encoder(&dev_priv->drm, encoder) {  in intel_hpd_irq_handler()
572 		drm_dbg(&dev_priv->drm,  in intel_hpd_irq_handler()
580 			dev_priv->display.hotplug.long_port_mask |= BIT(port);  in intel_hpd_irq_handler()
583 			dev_priv->display.hotplug.short_port_mask |= BIT(port);  in intel_hpd_irq_handler()
594 		if (dev_priv->display.hotplug.stats[pin].state == HPD_DISABLED) {  in intel_hpd_irq_handler()
601 			drm_WARN_ONCE(&dev_priv->drm, !HAS_GMCH(dev_priv),  in intel_hpd_irq_handler()
607 		if (dev_priv->display.hotplug.stats[pin].state != HPD_ENABLED)  in intel_hpd_irq_handler()
618 			dev_priv->display.hotplug.event_bits |= BIT(pin);  in intel_hpd_irq_handler()
623 		if (intel_hpd_irq_storm_detect(dev_priv, pin, long_hpd)) {  in intel_hpd_irq_handler()
624 			dev_priv->display.hotplug.event_bits &= ~BIT(pin);  in intel_hpd_irq_handler()
635 		intel_hpd_irq_setup(dev_priv);  in intel_hpd_irq_handler()
644 		queue_work(dev_priv->display.hotplug.dp_wq, &dev_priv->display.hotplug.dig_port_work);  in intel_hpd_irq_handler()
646 		queue_delayed_detection_work(dev_priv,  in intel_hpd_irq_handler()
647 					     &dev_priv->display.hotplug.hotplug_work, 0);  in intel_hpd_irq_handler()
649 	spin_unlock(&dev_priv->irq_lock);  in intel_hpd_irq_handler()
666 void intel_hpd_init(struct drm_i915_private *dev_priv)  in intel_hpd_init()  argument
670 	if (!HAS_DISPLAY(dev_priv))  in intel_hpd_init()
674 		dev_priv->display.hotplug.stats[i].count = 0;  in intel_hpd_init()
675 		dev_priv->display.hotplug.stats[i].state = HPD_ENABLED;  in intel_hpd_init()
682 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_init()
683 	intel_hpd_irq_setup(dev_priv);  in intel_hpd_init()
684 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_init()
732 	struct drm_i915_private *dev_priv =  in i915_hpd_poll_init_work()  local
740 	mutex_lock(&dev_priv->drm.mode_config.mutex);  in i915_hpd_poll_init_work()
742 	enabled = READ_ONCE(dev_priv->display.hotplug.poll_enabled);  in i915_hpd_poll_init_work()
750 		wakeref = intel_display_power_get(dev_priv,  in i915_hpd_poll_init_work()
752 		drm_WARN_ON(&dev_priv->drm,  in i915_hpd_poll_init_work()
753 			    READ_ONCE(dev_priv->display.hotplug.poll_enabled));  in i915_hpd_poll_init_work()
754 		cancel_work(&dev_priv->display.hotplug.poll_init_work);  in i915_hpd_poll_init_work()
757 	spin_lock_irq(&dev_priv->irq_lock);  in i915_hpd_poll_init_work()
759 	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);  in i915_hpd_poll_init_work()
767 		if (dev_priv->display.hotplug.stats[pin].state == HPD_DISABLED)  in i915_hpd_poll_init_work()
778 	spin_unlock_irq(&dev_priv->irq_lock);  in i915_hpd_poll_init_work()
781 		drm_kms_helper_poll_reschedule(&dev_priv->drm);  in i915_hpd_poll_init_work()
783 	mutex_unlock(&dev_priv->drm.mode_config.mutex);  in i915_hpd_poll_init_work()
790 		i915_hpd_poll_detect_connectors(dev_priv);  in i915_hpd_poll_init_work()
792 		intel_display_power_put(dev_priv,  in i915_hpd_poll_init_work()
814 void intel_hpd_poll_enable(struct drm_i915_private *dev_priv)  in intel_hpd_poll_enable()  argument
816 	struct intel_display *display = &dev_priv->display;  in intel_hpd_poll_enable()
818 	if (!HAS_DISPLAY(dev_priv) ||  in intel_hpd_poll_enable()
822 	WRITE_ONCE(dev_priv->display.hotplug.poll_enabled, true);  in intel_hpd_poll_enable()
830 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_poll_enable()
831 	queue_detection_work(dev_priv,  in intel_hpd_poll_enable()
832 			     &dev_priv->display.hotplug.poll_init_work);  in intel_hpd_poll_enable()
833 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_poll_enable()
855 void intel_hpd_poll_disable(struct drm_i915_private *dev_priv)  in intel_hpd_poll_disable()  argument
857 	if (!HAS_DISPLAY(dev_priv))  in intel_hpd_poll_disable()
860 	WRITE_ONCE(dev_priv->display.hotplug.poll_enabled, false);  in intel_hpd_poll_disable()
862 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_poll_disable()
863 	queue_detection_work(dev_priv,  in intel_hpd_poll_disable()
864 			     &dev_priv->display.hotplug.poll_init_work);  in intel_hpd_poll_disable()
865 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_poll_disable()
901 void intel_hpd_cancel_work(struct drm_i915_private *dev_priv)  in intel_hpd_cancel_work()  argument
903 	if (!HAS_DISPLAY(dev_priv))  in intel_hpd_cancel_work()
906 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_cancel_work()
908 	dev_priv->display.hotplug.long_port_mask = 0;  in intel_hpd_cancel_work()
909 	dev_priv->display.hotplug.short_port_mask = 0;  in intel_hpd_cancel_work()
910 	dev_priv->display.hotplug.event_bits = 0;  in intel_hpd_cancel_work()
911 	dev_priv->display.hotplug.retry_bits = 0;  in intel_hpd_cancel_work()
913 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_cancel_work()
915 	cancel_work_sync(&dev_priv->display.hotplug.dig_port_work);  in intel_hpd_cancel_work()
921 	if (cancel_all_detection_work(dev_priv))  in intel_hpd_cancel_work()
922 		drm_dbg_kms(&dev_priv->drm, "Hotplug detection work still active\n");  in intel_hpd_cancel_work()
925 bool intel_hpd_disable(struct drm_i915_private *dev_priv, enum hpd_pin pin)  in intel_hpd_disable()  argument
932 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_disable()
933 	if (dev_priv->display.hotplug.stats[pin].state == HPD_ENABLED) {  in intel_hpd_disable()
934 		dev_priv->display.hotplug.stats[pin].state = HPD_DISABLED;  in intel_hpd_disable()
937 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_disable()
942 void intel_hpd_enable(struct drm_i915_private *dev_priv, enum hpd_pin pin)  in intel_hpd_enable()  argument
947 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_enable()
948 	dev_priv->display.hotplug.stats[pin].state = HPD_ENABLED;  in intel_hpd_enable()
949 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_enable()
1010 	struct drm_i915_private *dev_priv = m->private;  in i915_hpd_storm_ctl_show()  local
1011 	struct intel_hotplug *hotplug = &dev_priv->display.hotplug;  in i915_hpd_storm_ctl_show()
1016 	intel_synchronize_irq(dev_priv);  in i915_hpd_storm_ctl_show()
1017 	flush_work(&dev_priv->display.hotplug.dig_port_work);  in i915_hpd_storm_ctl_show()
1018 	flush_delayed_work(&dev_priv->display.hotplug.hotplug_work);  in i915_hpd_storm_ctl_show()
1032 	struct drm_i915_private *dev_priv = m->private;  in i915_hpd_storm_ctl_write()  local
1033 	struct intel_hotplug *hotplug = &dev_priv->display.hotplug;  in i915_hpd_storm_ctl_write()
1058 		drm_dbg_kms(&dev_priv->drm,  in i915_hpd_storm_ctl_write()
1062 		drm_dbg_kms(&dev_priv->drm, "Disabling HPD storm detection\n");  in i915_hpd_storm_ctl_write()
1064 	spin_lock_irq(&dev_priv->irq_lock);  in i915_hpd_storm_ctl_write()
1069 	spin_unlock_irq(&dev_priv->irq_lock);  in i915_hpd_storm_ctl_write()
1072 	flush_delayed_work(&dev_priv->display.hotplug.reenable_work);  in i915_hpd_storm_ctl_write()
1093 	struct drm_i915_private *dev_priv = m->private;  in i915_hpd_short_storm_ctl_show()  local
1096 		   str_yes_no(dev_priv->display.hotplug.hpd_short_storm_enabled));  in i915_hpd_short_storm_ctl_show()
1113 	struct drm_i915_private *dev_priv = m->private;  in i915_hpd_short_storm_ctl_write()  local
1114 	struct intel_hotplug *hotplug = &dev_priv->display.hotplug;  in i915_hpd_short_storm_ctl_write()
1135 		new_state = !HAS_DP_MST(dev_priv);  in i915_hpd_short_storm_ctl_write()
1139 	drm_dbg_kms(&dev_priv->drm, "%sabling HPD short storm detection\n",  in i915_hpd_short_storm_ctl_write()
1142 	spin_lock_irq(&dev_priv->irq_lock);  in i915_hpd_short_storm_ctl_write()
1147 	spin_unlock_irq(&dev_priv->irq_lock);  in i915_hpd_short_storm_ctl_write()
1150 	flush_delayed_work(&dev_priv->display.hotplug.reenable_work);  in i915_hpd_short_storm_ctl_write()