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Commit f417c11b authored by Ville Syrjälä's avatar Ville Syrjälä Committed by Daniel Vetter
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drm/i915: Don't get hw state from DVO chip unless DVO is enabled 



Certain DVO chips (ns2501 for example) don't like to be accessed unless
the PLL is running. Simply skip the DVO get_hw_state if the DVO port
is disabled.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent e0f0273e

drivers/gpu/drm/i915/intel_dvo.c

+8 −0
Original line number Diff line number Diff line
@@ -112,7 +112,15 @@ static struct intel_dvo *intel_attached_dvo(struct drm_connector *connector) 


static bool intel_dvo_connector_get_hw_state(struct intel_connector *connector)

{

	struct drm_device *dev = connector->base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;

	struct intel_dvo *intel_dvo = intel_attached_dvo(&connector->base);

	u32 tmp;



	tmp = I915_READ(intel_dvo->dev.dvo_reg);



	if (!(tmp & DVO_ENABLE))

		return false;



	return intel_dvo->dev.dev_ops->get_hw_state(&intel_dvo->dev);

}