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Commit a836bdf9 authored by Paulo Zanoni's avatar Paulo Zanoni Committed by Daniel Vetter
Browse files

drm/i915: add DP support to intel_ddi_disable_port 



Just a missing register. There is no problem to run this code when the
output is HDMI.

Signed-off-by: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 247d89f6

drivers/gpu/drm/i915/intel_ddi.c

+10 −1
Original line number Diff line number Diff line
@@ -1138,14 +1138,23 @@ void intel_ddi_post_disable(struct intel_encoder *intel_encoder) 
	struct drm_i915_private *dev_priv = encoder->dev->dev_private;

	enum port port = intel_ddi_get_encoder_port(intel_encoder);

	uint32_t val;

	bool wait = false;



	val = I915_READ(DDI_BUF_CTL(port));

	if (val & DDI_BUF_CTL_ENABLE) {

		val &= ~DDI_BUF_CTL_ENABLE;

		I915_WRITE(DDI_BUF_CTL(port), val);

		intel_wait_ddi_buf_idle(dev_priv, port);

		wait = true;

	}



	val = I915_READ(DP_TP_CTL(port));

	val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);

	val |= DP_TP_CTL_LINK_TRAIN_PAT1;

	I915_WRITE(DP_TP_CTL(port), val);



	if (wait)

		intel_wait_ddi_buf_idle(dev_priv, port);



	I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE);

}