drm/i915: disable opregion lid detection for now.

At least on my HP 2540p this is wrong at bootup, fine
at any other time once a lid event has occured. This is due to
_REG vs _INI ordering in the ACPI tables.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 18391b3ec2c..4e5ff593413 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -248,18 +248,24 @@ void intel_panel_setup_backlight(struct drm_device *dev)
 enum drm_connector_status
 intel_panel_detect(struct drm_device *dev)
 {
+#if 0
         struct drm_i915_private *dev_priv = dev->dev_private;
+#endif
 
         if (i915_panel_ignore_lid)
                 return i915_panel_ignore_lid > 0 ?
                         connector_status_connected :
                         connector_status_disconnected;
 
+        /* opregion lid state on HP 2540p is wrong at boot up,
+         * appears to be either the BIOS or Linux ACPI fault */
+#if 0
         /* Assume that the BIOS does not lie through the OpRegion... */
         if (dev_priv->opregion.lid_state)
                 return ioread32(dev_priv->opregion.lid_state) & 0x1 ?
                         connector_status_connected :
                         connector_status_disconnected;
+#endif
 
         return connector_status_unknown;
 }