This adds more information to the hotplug uevent and lets user-space
know that it's about a particular connector only.
v2: don't rely on the changed HPD pin bitmask to count changed
connectors (Jani)
Signed-off-by: Simon Ser <contact@xxxxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Gustavo Sousa <gustavo.sousa@xxxxxxxxx>
Cc: Imre Deak <imre.deak@xxxxxxxxx>
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_hotplug.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c b/drivers/gpu/drm/i915/display/intel_hotplug.c
index 1160fa20433b..0ff5ed46ae1e 100644
--- a/drivers/gpu/drm/i915/display/intel_hotplug.c
+++ b/drivers/gpu/drm/i915/display/intel_hotplug.c
@@ -376,6 +376,8 @@ static void i915_hotplug_work_func(struct work_struct *work)
u32 changed = 0, retry = 0;
u32 hpd_event_bits;
u32 hpd_retry_bits;
+ struct drm_connector *first_changed_connector = NULL;
+ int changed_connectors = 0;
mutex_lock(&dev_priv->drm.mode_config.mutex);
drm_dbg_kms(&dev_priv->drm, "running encoder hotplug functions\n");
@@ -428,6 +430,11 @@ static void i915_hotplug_work_func(struct work_struct *work)
break;
case INTEL_HOTPLUG_CHANGED:
changed |= hpd_bit;
+ changed_connectors++;
+ if (!first_changed_connector) {
+ drm_connector_get(&connector->base);
+ first_changed_connector = &connector->base;
+ }
break;
case INTEL_HOTPLUG_RETRY:
retry |= hpd_bit;
@@ -438,9 +445,14 @@ static void i915_hotplug_work_func(struct work_struct *work)
drm_connector_list_iter_end(&conn_iter);
mutex_unlock(&dev_priv->drm.mode_config.mutex);
- if (changed)
+ if (changed_connectors == 1)
+ drm_kms_helper_connector_hotplug_event(first_changed_connector);
+ else if (changed_connectors > 0)
drm_kms_helper_hotplug_event(&dev_priv->drm);
+ if (first_changed_connector)
+ drm_connector_put(first_changed_connector);
+
/* Remove shared HPD pins that have changed */
retry &= ~changed;
if (retry) {
--
2.41.0
