Hi Jan -
Jan Niggemann writes:
>
> As to the log: I messed up the kernel parameters this morning... was
> out of coffee this morning and my 1,5y daughter played around me :-)
>
> Here's my kernel log with drm.debug and printk.time enabled:
> Uncompressed (22M): http://files.hz6.de/kern_20130722.log
> bzip2'd (some 600 KB): http://files.hz6.de/kern_20130722.log.bz2
I've looked at the logs a bit more. Here's a patch adding some more
debug information. Would you please apply this to your 3.10 kernel
and generate a log file the same way as you did before.
The driver will be even more chatty - but I don't expect any problems
from this.
Cheers,
Egbert.
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index e43d809..46bb77c 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -919,6 +919,11 @@ static inline void intel_hpd_irq_handler(struct drm_device
*dev,
spin_lock(&dev_priv->irq_lock);
for (i = 1; i < HPD_NUM_PINS; i++) {
+ if (IS_G4X(dev) && (hpd[i] & hotplug_trigger) &&
+ dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED)
+ DRM_DEBUG_KMS("Received HPD intterupt although
disabled\n",
+ I915_READ(PORT_HOTPLUG_EN));
+
if (!(hpd[i] & hotplug_trigger) ||
dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED)
continue;
@@ -929,6 +934,8 @@ static inline void intel_hpd_irq_handler(struct drm_device
*dev,
+
msecs_to_jiffies(HPD_STORM_DETECT_PERIOD))) {
dev_priv->hpd_stats[i].hpd_last_jiffies = jiffies;
dev_priv->hpd_stats[i].hpd_cnt = 0;
+ DRM_DEBUG_KMS("Received HPD interrupt on PIN %d -
jiffies: %d\n", i,
+ dev_priv->hpd_stats[i].hpd_last_jiffies);
} else if (dev_priv->hpd_stats[i].hpd_cnt >
HPD_STORM_THRESHOLD) {
dev_priv->hpd_stats[i].hpd_mark = HPD_MARK_DISABLED;
dev_priv->hpd_event_bits &= ~(1 << i);
@@ -936,6 +943,8 @@ static inline void intel_hpd_irq_handler(struct drm_device
*dev,
storm_detected = true;
} else {
dev_priv->hpd_stats[i].hpd_cnt++;
+ DRM_DEBUG_KMS("Received HPD interrupt on PIN %d - cnt:
%d\n", i,
+ dev_priv->hpd_stats[i].hpd_cnt);
}
}
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