86 enum hpd_pin intel_hpd_pin_default(struct drm_i915_private *dev_priv,  in intel_hpd_pin_default()  argument
139 static bool intel_hpd_irq_storm_detect(struct drm_i915_private *dev_priv,  in intel_hpd_irq_storm_detect()  argument
142 	struct i915_hotplug *hpd = &dev_priv->hotplug;  in intel_hpd_irq_storm_detect()
150 	    (!long_hpd && !dev_priv->hotplug.hpd_short_storm_enabled))  in intel_hpd_irq_storm_detect()
161 		drm_dbg_kms(&dev_priv->drm,  in intel_hpd_irq_storm_detect()
165 		drm_dbg_kms(&dev_priv->drm,  in intel_hpd_irq_storm_detect()
175 intel_hpd_irq_storm_switch_to_polling(struct drm_i915_private *dev_priv)  in intel_hpd_irq_storm_switch_to_polling()  argument
177 	struct drm_device *dev = &dev_priv->drm;  in intel_hpd_irq_storm_switch_to_polling()
182 	lockdep_assert_held(&dev_priv->irq_lock);  in intel_hpd_irq_storm_switch_to_polling()
193 		    dev_priv->hotplug.stats[pin].state != HPD_MARK_DISABLED)  in intel_hpd_irq_storm_switch_to_polling()
196 		drm_info(&dev_priv->drm,  in intel_hpd_irq_storm_switch_to_polling()
201 		dev_priv->hotplug.stats[pin].state = HPD_DISABLED;  in intel_hpd_irq_storm_switch_to_polling()
211 		mod_delayed_work(system_wq, &dev_priv->hotplug.reenable_work,  in intel_hpd_irq_storm_switch_to_polling()
218 	struct drm_i915_private *dev_priv =  in intel_hpd_irq_storm_reenable_work()  local
219 		container_of(work, typeof(*dev_priv),  in intel_hpd_irq_storm_reenable_work()
221 	struct drm_device *dev = &dev_priv->drm;  in intel_hpd_irq_storm_reenable_work()
227 	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);  in intel_hpd_irq_storm_reenable_work()
229 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_irq_storm_reenable_work()
235 		    dev_priv->hotplug.stats[pin].state != HPD_DISABLED)  in intel_hpd_irq_storm_reenable_work()
239 			drm_dbg(&dev_priv->drm,  in intel_hpd_irq_storm_reenable_work()
247 		if (dev_priv->hotplug.stats[pin].state == HPD_DISABLED)  in intel_hpd_irq_storm_reenable_work()
248 			dev_priv->hotplug.stats[pin].state = HPD_ENABLED;  in intel_hpd_irq_storm_reenable_work()
251 	if (dev_priv->display_irqs_enabled && dev_priv->display.hpd_irq_setup)  in intel_hpd_irq_storm_reenable_work()
252 		dev_priv->display.hpd_irq_setup(dev_priv);  in intel_hpd_irq_storm_reenable_work()
254 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_irq_storm_reenable_work()
256 	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);  in intel_hpd_irq_storm_reenable_work()
299 	struct drm_i915_private *dev_priv =  in i915_digport_work_func()  local
305 	spin_lock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
306 	long_port_mask = dev_priv->hotplug.long_port_mask;  in i915_digport_work_func()
307 	dev_priv->hotplug.long_port_mask = 0;  in i915_digport_work_func()
308 	short_port_mask = dev_priv->hotplug.short_port_mask;  in i915_digport_work_func()
309 	dev_priv->hotplug.short_port_mask = 0;  in i915_digport_work_func()
310 	spin_unlock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
312 	for_each_intel_encoder(&dev_priv->drm, encoder) {  in i915_digport_work_func()
337 		spin_lock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
338 		dev_priv->hotplug.event_bits |= old_bits;  in i915_digport_work_func()
339 		spin_unlock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
340 		queue_delayed_work(system_wq, &dev_priv->hotplug.hotplug_work, 0);  in i915_digport_work_func()
367 	struct drm_i915_private *dev_priv =  in i915_hotplug_work_func()  local
370 	struct drm_device *dev = &dev_priv->drm;  in i915_hotplug_work_func()
378 	drm_dbg_kms(&dev_priv->drm, "running encoder hotplug functions\n");  in i915_hotplug_work_func()
380 	spin_lock_irq(&dev_priv->irq_lock);  in i915_hotplug_work_func()
382 	hpd_event_bits = dev_priv->hotplug.event_bits;  in i915_hotplug_work_func()
383 	dev_priv->hotplug.event_bits = 0;  in i915_hotplug_work_func()
384 	hpd_retry_bits = dev_priv->hotplug.retry_bits;  in i915_hotplug_work_func()
385 	dev_priv->hotplug.retry_bits = 0;  in i915_hotplug_work_func()
388 	intel_hpd_irq_storm_switch_to_polling(dev_priv);  in i915_hotplug_work_func()
390 	spin_unlock_irq(&dev_priv->irq_lock);  in i915_hotplug_work_func()
411 			drm_dbg_kms(&dev_priv->drm,  in i915_hotplug_work_func()
437 		spin_lock_irq(&dev_priv->irq_lock);  in i915_hotplug_work_func()
438 		dev_priv->hotplug.retry_bits |= retry;  in i915_hotplug_work_func()
439 		spin_unlock_irq(&dev_priv->irq_lock);  in i915_hotplug_work_func()
441 		mod_delayed_work(system_wq, &dev_priv->hotplug.hotplug_work,  in i915_hotplug_work_func()
463 void intel_hpd_irq_handler(struct drm_i915_private *dev_priv,  in intel_hpd_irq_handler()  argument
476 	spin_lock(&dev_priv->irq_lock);  in intel_hpd_irq_handler()
484 	for_each_intel_encoder(&dev_priv->drm, encoder) {  in intel_hpd_irq_handler()
497 		drm_dbg(&dev_priv->drm,  in intel_hpd_irq_handler()
505 			dev_priv->hotplug.long_port_mask |= BIT(port);  in intel_hpd_irq_handler()
508 			dev_priv->hotplug.short_port_mask |= BIT(port);  in intel_hpd_irq_handler()
519 		if (dev_priv->hotplug.stats[pin].state == HPD_DISABLED) {  in intel_hpd_irq_handler()
526 			drm_WARN_ONCE(&dev_priv->drm, !HAS_GMCH(dev_priv),  in intel_hpd_irq_handler()
532 		if (dev_priv->hotplug.stats[pin].state != HPD_ENABLED)  in intel_hpd_irq_handler()
543 			dev_priv->hotplug.event_bits |= BIT(pin);  in intel_hpd_irq_handler()
548 		if (intel_hpd_irq_storm_detect(dev_priv, pin, long_hpd)) {  in intel_hpd_irq_handler()
549 			dev_priv->hotplug.event_bits &= ~BIT(pin);  in intel_hpd_irq_handler()
559 	if (storm_detected && dev_priv->display_irqs_enabled)  in intel_hpd_irq_handler()
560 		dev_priv->display.hpd_irq_setup(dev_priv);  in intel_hpd_irq_handler()
561 	spin_unlock(&dev_priv->irq_lock);  in intel_hpd_irq_handler()
570 		queue_work(dev_priv->hotplug.dp_wq, &dev_priv->hotplug.dig_port_work);  in intel_hpd_irq_handler()
572 		queue_delayed_work(system_wq, &dev_priv->hotplug.hotplug_work, 0);  in intel_hpd_irq_handler()
589 void intel_hpd_init(struct drm_i915_private *dev_priv)  in intel_hpd_init()  argument
594 		dev_priv->hotplug.stats[i].count = 0;  in intel_hpd_init()
595 		dev_priv->hotplug.stats[i].state = HPD_ENABLED;  in intel_hpd_init()
598 	WRITE_ONCE(dev_priv->hotplug.poll_enabled, false);  in intel_hpd_init()
599 	schedule_work(&dev_priv->hotplug.poll_init_work);  in intel_hpd_init()
605 	if (dev_priv->display_irqs_enabled && dev_priv->display.hpd_irq_setup) {  in intel_hpd_init()
606 		spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_init()
607 		if (dev_priv->display_irqs_enabled)  in intel_hpd_init()
608 			dev_priv->display.hpd_irq_setup(dev_priv);  in intel_hpd_init()
609 		spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_init()
615 	struct drm_i915_private *dev_priv =  in i915_hpd_poll_init_work()  local
618 	struct drm_device *dev = &dev_priv->drm;  in i915_hpd_poll_init_work()
625 	enabled = READ_ONCE(dev_priv->hotplug.poll_enabled);  in i915_hpd_poll_init_work()
672 void intel_hpd_poll_init(struct drm_i915_private *dev_priv)  in intel_hpd_poll_init()  argument
674 	WRITE_ONCE(dev_priv->hotplug.poll_enabled, true);  in intel_hpd_poll_init()
682 	schedule_work(&dev_priv->hotplug.poll_init_work);  in intel_hpd_poll_init()
685 void intel_hpd_init_work(struct drm_i915_private *dev_priv)  in intel_hpd_init_work()  argument
687 	INIT_DELAYED_WORK(&dev_priv->hotplug.hotplug_work,  in intel_hpd_init_work()
689 	INIT_WORK(&dev_priv->hotplug.dig_port_work, i915_digport_work_func);  in intel_hpd_init_work()
690 	INIT_WORK(&dev_priv->hotplug.poll_init_work, i915_hpd_poll_init_work);  in intel_hpd_init_work()
691 	INIT_DELAYED_WORK(&dev_priv->hotplug.reenable_work,  in intel_hpd_init_work()
695 void intel_hpd_cancel_work(struct drm_i915_private *dev_priv)  in intel_hpd_cancel_work()  argument
697 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_cancel_work()
699 	dev_priv->hotplug.long_port_mask = 0;  in intel_hpd_cancel_work()
700 	dev_priv->hotplug.short_port_mask = 0;  in intel_hpd_cancel_work()
701 	dev_priv->hotplug.event_bits = 0;  in intel_hpd_cancel_work()
702 	dev_priv->hotplug.retry_bits = 0;  in intel_hpd_cancel_work()
704 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_cancel_work()
706 	cancel_work_sync(&dev_priv->hotplug.dig_port_work);  in intel_hpd_cancel_work()
707 	cancel_delayed_work_sync(&dev_priv->hotplug.hotplug_work);  in intel_hpd_cancel_work()
708 	cancel_work_sync(&dev_priv->hotplug.poll_init_work);  in intel_hpd_cancel_work()
709 	cancel_delayed_work_sync(&dev_priv->hotplug.reenable_work);  in intel_hpd_cancel_work()
712 bool intel_hpd_disable(struct drm_i915_private *dev_priv, enum hpd_pin pin)  in intel_hpd_disable()  argument
719 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_disable()
720 	if (dev_priv->hotplug.stats[pin].state == HPD_ENABLED) {  in intel_hpd_disable()
721 		dev_priv->hotplug.stats[pin].state = HPD_DISABLED;  in intel_hpd_disable()
724 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_disable()
729 void intel_hpd_enable(struct drm_i915_private *dev_priv, enum hpd_pin pin)  in intel_hpd_enable()  argument
734 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_enable()
735 	dev_priv->hotplug.stats[pin].state = HPD_ENABLED;  in intel_hpd_enable()
736 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_enable()