87 enum hpd_pin intel_hpd_pin_default(struct drm_i915_private *dev_priv,  in intel_hpd_pin_default()  argument
140 static bool intel_hpd_irq_storm_detect(struct drm_i915_private *dev_priv,  in intel_hpd_irq_storm_detect()  argument
143 	struct intel_hotplug *hpd = &dev_priv->display.hotplug;  in intel_hpd_irq_storm_detect()
151 	    (!long_hpd && !dev_priv->display.hotplug.hpd_short_storm_enabled))  in intel_hpd_irq_storm_detect()
162 		drm_dbg_kms(&dev_priv->drm,  in intel_hpd_irq_storm_detect()
166 		drm_dbg_kms(&dev_priv->drm,  in intel_hpd_irq_storm_detect()
176 intel_hpd_irq_storm_switch_to_polling(struct drm_i915_private *dev_priv)  in intel_hpd_irq_storm_switch_to_polling()  argument
178 	struct drm_device *dev = &dev_priv->drm;  in intel_hpd_irq_storm_switch_to_polling()
183 	lockdep_assert_held(&dev_priv->irq_lock);  in intel_hpd_irq_storm_switch_to_polling()
194 		    dev_priv->display.hotplug.stats[pin].state != HPD_MARK_DISABLED)  in intel_hpd_irq_storm_switch_to_polling()
197 		drm_info(&dev_priv->drm,  in intel_hpd_irq_storm_switch_to_polling()
202 		dev_priv->display.hotplug.stats[pin].state = HPD_DISABLED;  in intel_hpd_irq_storm_switch_to_polling()
212 		mod_delayed_work(system_wq, &dev_priv->display.hotplug.reenable_work,  in intel_hpd_irq_storm_switch_to_polling()
219 	struct drm_i915_private *dev_priv =  in intel_hpd_irq_storm_reenable_work()  local
220 		container_of(work, typeof(*dev_priv),  in intel_hpd_irq_storm_reenable_work()
222 	struct drm_device *dev = &dev_priv->drm;  in intel_hpd_irq_storm_reenable_work()
228 	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);  in intel_hpd_irq_storm_reenable_work()
230 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_irq_storm_reenable_work()
236 		    dev_priv->display.hotplug.stats[pin].state != HPD_DISABLED)  in intel_hpd_irq_storm_reenable_work()
240 			drm_dbg(&dev_priv->drm,  in intel_hpd_irq_storm_reenable_work()
248 		if (dev_priv->display.hotplug.stats[pin].state == HPD_DISABLED)  in intel_hpd_irq_storm_reenable_work()
249 			dev_priv->display.hotplug.stats[pin].state = HPD_ENABLED;  in intel_hpd_irq_storm_reenable_work()
252 	intel_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->display.hotplug.long_port_mask;  in i915_digport_work_func()
307 	dev_priv->display.hotplug.long_port_mask = 0;  in i915_digport_work_func()
308 	short_port_mask = dev_priv->display.hotplug.short_port_mask;  in i915_digport_work_func()
309 	dev_priv->display.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->display.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->display.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->display.hotplug.event_bits;  in i915_hotplug_work_func()
383 	dev_priv->display.hotplug.event_bits = 0;  in i915_hotplug_work_func()
384 	hpd_retry_bits = dev_priv->display.hotplug.retry_bits;  in i915_hotplug_work_func()
385 	dev_priv->display.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->display.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->display.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->display.hotplug.long_port_mask |= BIT(port);  in intel_hpd_irq_handler()
508 			dev_priv->display.hotplug.short_port_mask |= BIT(port);  in intel_hpd_irq_handler()
519 		if (dev_priv->display.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->display.hotplug.stats[pin].state != HPD_ENABLED)  in intel_hpd_irq_handler()
543 			dev_priv->display.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->display.hotplug.event_bits &= ~BIT(pin);  in intel_hpd_irq_handler()
560 		intel_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->display.hotplug.dp_wq, &dev_priv->display.hotplug.dig_port_work);  in intel_hpd_irq_handler()
572 		queue_delayed_work(system_wq, &dev_priv->display.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
593 	if (!HAS_DISPLAY(dev_priv))  in intel_hpd_init()
597 		dev_priv->display.hotplug.stats[i].count = 0;  in intel_hpd_init()
598 		dev_priv->display.hotplug.stats[i].state = HPD_ENABLED;  in intel_hpd_init()
605 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_init()
606 	intel_hpd_irq_setup(dev_priv);  in intel_hpd_init()
607 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_init()
612 	struct drm_i915_private *dev_priv =  in i915_hpd_poll_init_work()  local
615 	struct drm_device *dev = &dev_priv->drm;  in i915_hpd_poll_init_work()
622 	enabled = READ_ONCE(dev_priv->display.hotplug.poll_enabled);  in i915_hpd_poll_init_work()
669 void intel_hpd_poll_enable(struct drm_i915_private *dev_priv)  in intel_hpd_poll_enable()  argument
671 	if (!HAS_DISPLAY(dev_priv) ||  in intel_hpd_poll_enable()
672 	    !INTEL_DISPLAY_ENABLED(dev_priv))  in intel_hpd_poll_enable()
675 	WRITE_ONCE(dev_priv->display.hotplug.poll_enabled, true);  in intel_hpd_poll_enable()
683 	schedule_work(&dev_priv->display.hotplug.poll_init_work);  in intel_hpd_poll_enable()
705 void intel_hpd_poll_disable(struct drm_i915_private *dev_priv)  in intel_hpd_poll_disable()  argument
707 	if (!HAS_DISPLAY(dev_priv))  in intel_hpd_poll_disable()
710 	WRITE_ONCE(dev_priv->display.hotplug.poll_enabled, false);  in intel_hpd_poll_disable()
711 	schedule_work(&dev_priv->display.hotplug.poll_init_work);  in intel_hpd_poll_disable()
714 void intel_hpd_init_work(struct drm_i915_private *dev_priv)  in intel_hpd_init_work()  argument
716 	INIT_DELAYED_WORK(&dev_priv->display.hotplug.hotplug_work,  in intel_hpd_init_work()
718 	INIT_WORK(&dev_priv->display.hotplug.dig_port_work, i915_digport_work_func);  in intel_hpd_init_work()
719 	INIT_WORK(&dev_priv->display.hotplug.poll_init_work, i915_hpd_poll_init_work);  in intel_hpd_init_work()
720 	INIT_DELAYED_WORK(&dev_priv->display.hotplug.reenable_work,  in intel_hpd_init_work()
724 void intel_hpd_cancel_work(struct drm_i915_private *dev_priv)  in intel_hpd_cancel_work()  argument
726 	if (!HAS_DISPLAY(dev_priv))  in intel_hpd_cancel_work()
729 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_cancel_work()
731 	dev_priv->display.hotplug.long_port_mask = 0;  in intel_hpd_cancel_work()
732 	dev_priv->display.hotplug.short_port_mask = 0;  in intel_hpd_cancel_work()
733 	dev_priv->display.hotplug.event_bits = 0;  in intel_hpd_cancel_work()
734 	dev_priv->display.hotplug.retry_bits = 0;  in intel_hpd_cancel_work()
736 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_cancel_work()
738 	cancel_work_sync(&dev_priv->display.hotplug.dig_port_work);  in intel_hpd_cancel_work()
739 	cancel_delayed_work_sync(&dev_priv->display.hotplug.hotplug_work);  in intel_hpd_cancel_work()
740 	cancel_work_sync(&dev_priv->display.hotplug.poll_init_work);  in intel_hpd_cancel_work()
741 	cancel_delayed_work_sync(&dev_priv->display.hotplug.reenable_work);  in intel_hpd_cancel_work()
744 bool intel_hpd_disable(struct drm_i915_private *dev_priv, enum hpd_pin pin)  in intel_hpd_disable()  argument
751 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_disable()
752 	if (dev_priv->display.hotplug.stats[pin].state == HPD_ENABLED) {  in intel_hpd_disable()
753 		dev_priv->display.hotplug.stats[pin].state = HPD_DISABLED;  in intel_hpd_disable()
756 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_disable()
761 void intel_hpd_enable(struct drm_i915_private *dev_priv, enum hpd_pin pin)  in intel_hpd_enable()  argument
766 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_enable()
767 	dev_priv->display.hotplug.stats[pin].state = HPD_ENABLED;  in intel_hpd_enable()
768 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_enable()