drm/i915: s/hotplug_irq_storm_detect/intel_hpd_irq_handler/
The combination of Paulo's fifo underrun detection code and Egbert's
hpd storm handling code unfortunately made the hpd storm handling code
racy.
To avoid duplicating tricky interrupt locking code over all platforms
start with a bit of refactoring. This patch is the very first step
since in the end the irq storm handling code will handle all hotplug
logic (and so also encapsulate the locking nicely).
v2: Rebase on top of the i965g/gm sdvo hpd fix.
Cc: Egbert Eich <eich@suse.de>
Reviewed-by: Egbert Eich <eich@suse.de>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index bff9abd..378ade0 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -875,9 +875,9 @@
#define HPD_STORM_DETECT_PERIOD 1000
#define HPD_STORM_THRESHOLD 5
-static inline bool hotplug_irq_storm_detect(struct drm_device *dev,
- u32 hotplug_trigger,
- const u32 *hpd)
+static inline bool intel_hpd_irq_handler(struct drm_device *dev,
+ u32 hotplug_trigger,
+ const u32 *hpd)
{
drm_i915_private_t *dev_priv = dev->dev_private;
unsigned long irqflags;
@@ -1018,7 +1018,7 @@
DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
hotplug_status);
if (hotplug_trigger) {
- if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_status_i915))
+ if (intel_hpd_irq_handler(dev, hotplug_trigger, hpd_status_i915))
i915_hpd_irq_setup(dev);
queue_work(dev_priv->wq,
&dev_priv->hotplug_work);
@@ -1049,7 +1049,7 @@
u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK;
if (hotplug_trigger) {
- if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_ibx))
+ if (intel_hpd_irq_handler(dev, hotplug_trigger, hpd_ibx))
ibx_hpd_irq_setup(dev);
queue_work(dev_priv->wq, &dev_priv->hotplug_work);
}
@@ -1154,7 +1154,7 @@
u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT;
if (hotplug_trigger) {
- if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_cpt))
+ if (intel_hpd_irq_handler(dev, hotplug_trigger, hpd_cpt))
ibx_hpd_irq_setup(dev);
queue_work(dev_priv->wq, &dev_priv->hotplug_work);
}
@@ -3232,7 +3232,7 @@
DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
hotplug_status);
if (hotplug_trigger) {
- if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_status_i915))
+ if (intel_hpd_irq_handler(dev, hotplug_trigger, hpd_status_i915))
i915_hpd_irq_setup(dev);
queue_work(dev_priv->wq,
&dev_priv->hotplug_work);
@@ -3473,7 +3473,7 @@
DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
hotplug_status);
if (hotplug_trigger) {
- if (hotplug_irq_storm_detect(dev, hotplug_trigger,
+ if (intel_hpd_irq_handler(dev, hotplug_trigger,
IS_G4X(dev) ? hpd_status_gen4 : hpd_status_i915))
i915_hpd_irq_setup(dev);
queue_work(dev_priv->wq,