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Commit b42d4c5c authored by Jesse Barnes's avatar Jesse Barnes Committed by Eric Anholt
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drm/i915: use ACPI LID status for LVDS ->detect hook 



We can't load or hotplug detect LVDS like we can other outputs, but if
there's a lid device present we can use it as a proxy.  This allows the
LFP state to be determined at ->detect time, making configurations
requiring manual intervention today "just work" assuming the lid device
status is correct.

Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarEric Anholt <eric@anholt.net>
parent c1c7af60

drivers/gpu/drm/i915/intel_lvds.c

+9 −3
Original line number Original line Diff line number Diff line
@@ -589,12 +589,18 @@ static void intel_lvds_mode_set(struct drm_encoder *encoder, 
/**

/**

 * Detect the LVDS connection.

 * Detect the LVDS connection.

 *

 *

 * This always returns CONNECTOR_STATUS_CONNECTED.  This connector should only have

 * Since LVDS doesn't have hotlug, we use the lid as a proxy.  Open means

 * been set up if the LVDS was actually connected anyway.

 * connected and closed means disconnected.  We also send hotplug events as

 * needed, using lid status notification from the input layer.

 */

 */

static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector)

static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector)

{

{

	return connector_status_connected;

	enum drm_connector_status status = connector_status_connected;



	if (!acpi_lid_open())

		status = connector_status_disconnected;



	return status;

}

}





/**

/**