diff options
| author |   Egbert Eich <eich@suse.de> | 2013-04-11 15:57:57 +0200 |
|---|---|---|
| committer |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-04-23 14:24:23 +0200 |
| commit | 142e239849c800f9dc23f828762873073f612d3f (patch) | |
| tree | 5bcd455afe46ab801357a88e8643c693a675db43 /drivers/gpu/drm/i915/i915_irq.c | |
| parent | drm/i915: fix locking around punit access in cur_delayinfo for VLV (diff) | |
| download | linux-dev-142e239849c800f9dc23f828762873073f612d3f.tar.xz linux-dev-142e239849c800f9dc23f828762873073f612d3f.zip | |
drm/i915: Add bit field to record which pins have received HPD events (v3)
This way it is possible to limit 're'-detect() of displays to connectors
which have received an HPD event.
v2: Reordered drm_i915_private: Move hpd_event_bits to hpd state tracking.
v3: Fixed merge conflicts with previous patches.
Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index dae8953d2912..e37820199b26 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -557,6 +557,7 @@ static void i915_hotplug_work_func(struct work_struct *work) struct drm_connector *connector; unsigned long irqflags; bool hpd_disabled = false; + u32 hpd_event_bits; /* HPD irq before everything is fully set up. */ if (!dev_priv->enable_hotplug_processing) @@ -566,6 +567,9 @@ static void i915_hotplug_work_func(struct work_struct *work) DRM_DEBUG_KMS("running encoder hotplug functions\n"); spin_lock_irqsave(&dev_priv->irq_lock, irqflags); + + hpd_event_bits = dev_priv->hpd_event_bits; + dev_priv->hpd_event_bits = 0; list_for_each_entry(connector, &mode_config->connector_list, head) { intel_connector = to_intel_connector(connector); intel_encoder = intel_connector->encoder; @@ -580,6 +584,10 @@ static void i915_hotplug_work_func(struct work_struct *work) | DRM_CONNECTOR_POLL_DISCONNECT; hpd_disabled = true; } + if (hpd_event_bits & (1 << intel_encoder->hpd_pin)) { + DRM_DEBUG_KMS("Connector %s (pin %i) received hotplug event.\n", + drm_get_connector_name(connector), intel_encoder->hpd_pin); + } } /* if there were no outputs to poll, poll was disabled, * therefore make sure it's enabled when disabling HPD on @@ -844,6 +852,7 @@ static inline bool hotplug_irq_storm_detect(struct drm_device *dev, if (!(hpd[i] & hotplug_trigger) || dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED) + dev_priv->hpd_event_bits |= (1 << i); continue; if (!time_in_range(jiffies, dev_priv->hpd_stats[i].hpd_last_jiffies, @@ -853,6 +862,7 @@ static inline bool hotplug_irq_storm_detect(struct drm_device *dev, dev_priv->hpd_stats[i].hpd_cnt = 0; } 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); DRM_DEBUG_KMS("HPD interrupt storm detected on PIN %d\n", i); ret = true; } else { |