From b0ea7d37a8f63eeec5ae80b4a6403cfba01da02f Mon Sep 17 00:00:00 2001 From: Damien Lespiau Date: Thu, 13 Dec 2012 16:09:00 +0000 Subject: drm/i915/hdmi: Read the HPD status before trying to read the EDID If you unplug the hdmi connector slowly enough, the hotplug interrupt fires but then the kernel code tries to read the EDID and succeeds (because the connector is still half connected, the HPD pin is shorter than the others, and DDC works). Since EDID succeeds it thinks the monitor is still connected. To prevent that, read the live HPD status in the hotplug handler before trying to read the EDID. v2: Rename the function to ibx_ (Chris Wilson) Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=55372 Signed-off-by: Damien Lespiau Reviewed-by: Jani Nikula Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_hdmi.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/i915/intel_hdmi.c') diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 53df0a88a6a..9f834d324cf 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -793,16 +793,21 @@ static bool g4x_hdmi_connected(struct intel_hdmi *intel_hdmi) static enum drm_connector_status intel_hdmi_detect(struct drm_connector *connector, bool force) { + struct drm_device *dev = connector->dev; struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector); struct intel_digital_port *intel_dig_port = hdmi_to_dig_port(intel_hdmi); struct intel_encoder *intel_encoder = &intel_dig_port->base; - struct drm_i915_private *dev_priv = connector->dev->dev_private; + struct drm_i915_private *dev_priv = dev->dev_private; struct edid *edid; enum drm_connector_status status = connector_status_disconnected; - if (IS_G4X(connector->dev) && !g4x_hdmi_connected(intel_hdmi)) + + if (IS_G4X(dev) && !g4x_hdmi_connected(intel_hdmi)) return status; + else if (HAS_PCH_SPLIT(dev) && + !ibx_digital_port_connected(dev_priv, intel_dig_port)) + return status; intel_hdmi->has_hdmi_sink = false; intel_hdmi->has_audio = false; -- cgit v1.2.3-70-g09d2