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drm/i915: take a power domain reference while checking the HDMI live status
There are platforms that don't need the full GMBUS power domain (BXT) while others do (PCH, VLV/CHV). For optimizing this we would need to add a new power domain, but it's not clear how much we would benefit given the short time we hold the reference. So for now let's keep things simple. v2: - fix commit message, PCH won't take any redundant power resource after this change (Ville) Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> [fix commit message in v2 (Imre)] Link: http://patchwork.freedesktop.org/patch/msgid/1447959301-1263-2-git-send-email-imre.deak@intel.com
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@ -1393,6 +1393,8 @@ intel_hdmi_detect(struct drm_connector *connector, bool force)
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DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
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connector->base.id, connector->name);
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intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
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while (!live_status && --retry) {
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live_status = intel_digital_port_connected(dev_priv,
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hdmi_to_dig_port(intel_hdmi));
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@ -1412,6 +1414,8 @@ intel_hdmi_detect(struct drm_connector *connector, bool force)
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} else
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status = connector_status_disconnected;
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intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
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return status;
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}
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