121 static bool intel_hpd_irq_storm_detect(struct drm_i915_private *dev_priv,  in intel_hpd_irq_storm_detect()  argument
124 	unsigned long start = dev_priv->hotplug.stats[pin].last_jiffies;  in intel_hpd_irq_storm_detect()
129 		dev_priv->hotplug.stats[pin].last_jiffies = jiffies;  in intel_hpd_irq_storm_detect()
130 		dev_priv->hotplug.stats[pin].count = 0;  in intel_hpd_irq_storm_detect()
132 	} else if (dev_priv->hotplug.stats[pin].count > HPD_STORM_THRESHOLD) {  in intel_hpd_irq_storm_detect()
133 		dev_priv->hotplug.stats[pin].state = HPD_MARK_DISABLED;  in intel_hpd_irq_storm_detect()
137 		dev_priv->hotplug.stats[pin].count++;  in intel_hpd_irq_storm_detect()
139 			      dev_priv->hotplug.stats[pin].count);  in intel_hpd_irq_storm_detect()
145 static void intel_hpd_irq_storm_disable(struct drm_i915_private *dev_priv)  in intel_hpd_irq_storm_disable()  argument
147 	struct drm_device *dev = dev_priv->dev;  in intel_hpd_irq_storm_disable()
155 	assert_spin_locked(&dev_priv->irq_lock);  in intel_hpd_irq_storm_disable()
168 		    dev_priv->hotplug.stats[pin].state != HPD_MARK_DISABLED)  in intel_hpd_irq_storm_disable()
175 		dev_priv->hotplug.stats[pin].state = HPD_DISABLED;  in intel_hpd_irq_storm_disable()
184 		mod_delayed_work(system_wq, &dev_priv->hotplug.reenable_work,  in intel_hpd_irq_storm_disable()
191 	struct drm_i915_private *dev_priv =  in intel_hpd_irq_storm_reenable_work()  local
192 		container_of(work, typeof(*dev_priv),  in intel_hpd_irq_storm_reenable_work()
194 	struct drm_device *dev = dev_priv->dev;  in intel_hpd_irq_storm_reenable_work()
198 	intel_runtime_pm_get(dev_priv);  in intel_hpd_irq_storm_reenable_work()
200 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_irq_storm_reenable_work()
204 		if (dev_priv->hotplug.stats[i].state != HPD_DISABLED)  in intel_hpd_irq_storm_reenable_work()
207 		dev_priv->hotplug.stats[i].state = HPD_ENABLED;  in intel_hpd_irq_storm_reenable_work()
222 	if (dev_priv->display.hpd_irq_setup)  in intel_hpd_irq_storm_reenable_work()
223 		dev_priv->display.hpd_irq_setup(dev);  in intel_hpd_irq_storm_reenable_work()
224 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_irq_storm_reenable_work()
226 	intel_runtime_pm_put(dev_priv);  in intel_hpd_irq_storm_reenable_work()
252 	struct drm_i915_private *dev_priv =  in i915_digport_work_func()  local
259 	spin_lock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
260 	long_port_mask = dev_priv->hotplug.long_port_mask;  in i915_digport_work_func()
261 	dev_priv->hotplug.long_port_mask = 0;  in i915_digport_work_func()
262 	short_port_mask = dev_priv->hotplug.short_port_mask;  in i915_digport_work_func()
263 	dev_priv->hotplug.short_port_mask = 0;  in i915_digport_work_func()
264 	spin_unlock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
269 		intel_dig_port = dev_priv->hotplug.irq_port[i];  in i915_digport_work_func()
291 		spin_lock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
292 		dev_priv->hotplug.event_bits |= old_bits;  in i915_digport_work_func()
293 		spin_unlock_irq(&dev_priv->irq_lock);  in i915_digport_work_func()
294 		schedule_work(&dev_priv->hotplug.hotplug_work);  in i915_digport_work_func()
303 	struct drm_i915_private *dev_priv =  in i915_hotplug_work_func()  local
305 	struct drm_device *dev = dev_priv->dev;  in i915_hotplug_work_func()
316 	spin_lock_irq(&dev_priv->irq_lock);  in i915_hotplug_work_func()
318 	hpd_event_bits = dev_priv->hotplug.event_bits;  in i915_hotplug_work_func()
319 	dev_priv->hotplug.event_bits = 0;  in i915_hotplug_work_func()
322 	intel_hpd_irq_storm_disable(dev_priv);  in i915_hotplug_work_func()
324 	spin_unlock_irq(&dev_priv->irq_lock);  in i915_hotplug_work_func()
366 	struct drm_i915_private *dev_priv = dev->dev_private;  in intel_hpd_irq_handler()  local
376 	spin_lock(&dev_priv->irq_lock);  in intel_hpd_irq_handler()
382 			      dev_priv->hotplug.irq_port[port];  in intel_hpd_irq_handler()
395 				dev_priv->hotplug.long_port_mask |= (1 << port);  in intel_hpd_irq_handler()
398 				dev_priv->hotplug.short_port_mask |= (1 << port);  in intel_hpd_irq_handler()
403 		if (dev_priv->hotplug.stats[i].state == HPD_DISABLED) {  in intel_hpd_irq_handler()
415 		if (dev_priv->hotplug.stats[i].state != HPD_ENABLED)  in intel_hpd_irq_handler()
419 			dev_priv->hotplug.event_bits |= BIT(i);  in intel_hpd_irq_handler()
423 		if (intel_hpd_irq_storm_detect(dev_priv, i)) {  in intel_hpd_irq_handler()
424 			dev_priv->hotplug.event_bits &= ~BIT(i);  in intel_hpd_irq_handler()
430 		dev_priv->display.hpd_irq_setup(dev);  in intel_hpd_irq_handler()
431 	spin_unlock(&dev_priv->irq_lock);  in intel_hpd_irq_handler()
440 		queue_work(dev_priv->hotplug.dp_wq, &dev_priv->hotplug.dig_port_work);  in intel_hpd_irq_handler()
442 		schedule_work(&dev_priv->hotplug.hotplug_work);  in intel_hpd_irq_handler()
457 void intel_hpd_init(struct drm_i915_private *dev_priv)  in intel_hpd_init()  argument
459 	struct drm_device *dev = dev_priv->dev;  in intel_hpd_init()
465 		dev_priv->hotplug.stats[i].count = 0;  in intel_hpd_init()
466 		dev_priv->hotplug.stats[i].state = HPD_ENABLED;  in intel_hpd_init()
486 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_init()
487 	if (dev_priv->display.hpd_irq_setup)  in intel_hpd_init()
488 		dev_priv->display.hpd_irq_setup(dev);  in intel_hpd_init()
489 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_init()
492 void intel_hpd_init_work(struct drm_i915_private *dev_priv)  in intel_hpd_init_work()  argument
494 	INIT_WORK(&dev_priv->hotplug.hotplug_work, i915_hotplug_work_func);  in intel_hpd_init_work()
495 	INIT_WORK(&dev_priv->hotplug.dig_port_work, i915_digport_work_func);  in intel_hpd_init_work()
496 	INIT_DELAYED_WORK(&dev_priv->hotplug.reenable_work,  in intel_hpd_init_work()
500 void intel_hpd_cancel_work(struct drm_i915_private *dev_priv)  in intel_hpd_cancel_work()  argument
502 	spin_lock_irq(&dev_priv->irq_lock);  in intel_hpd_cancel_work()
504 	dev_priv->hotplug.long_port_mask = 0;  in intel_hpd_cancel_work()
505 	dev_priv->hotplug.short_port_mask = 0;  in intel_hpd_cancel_work()
506 	dev_priv->hotplug.event_bits = 0;  in intel_hpd_cancel_work()
508 	spin_unlock_irq(&dev_priv->irq_lock);  in intel_hpd_cancel_work()
510 	cancel_work_sync(&dev_priv->hotplug.dig_port_work);  in intel_hpd_cancel_work()
511 	cancel_work_sync(&dev_priv->hotplug.hotplug_work);  in intel_hpd_cancel_work()
512 	cancel_delayed_work_sync(&dev_priv->hotplug.reenable_work);  in intel_hpd_cancel_work()