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i915/display/hotplug: use drm_kms_helper_connector_hotplug_event()

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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@emersion.fr>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Gustavo Sousa <gustavo.sousa@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230623094229.120264-1-contact@emersion.fr
This commit is contained in:
Simon Ser 2023-06-23 09:42:35 +00:00 committed by Jani Nikula
parent 8290bcee57
commit a811c2e42a
1 changed files with 13 additions and 1 deletions
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14
drivers/gpu/drm/i915/display/intel_hotplug.c
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@ -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) {