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}

/**

 * intel_bios_is_port_present - is the specified digital port present

 * @dev_priv:	i915 device instance

 * @port:	port to check

 *

 * Return true if the device in %port is present.

 */

bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port)

{

	static const struct {

		u16 dp, hdmi;

	} port_mapping[] = {

		[PORT_B] = { DVO_PORT_DPB, DVO_PORT_HDMIB, },

		[PORT_C] = { DVO_PORT_DPC, DVO_PORT_HDMIC, },

		[PORT_D] = { DVO_PORT_DPD, DVO_PORT_HDMID, },

		[PORT_E] = { DVO_PORT_DPE, DVO_PORT_HDMIE, },

	};

	int i;

	/* FIXME maybe deal with port A as well? */

	if (WARN_ON(port == PORT_A) || port >= ARRAY_SIZE(port_mapping))

		return false;

	if (!dev_priv->vbt.child_dev_num)

		return false;

	for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {

		const union child_device_config *p_child =

			&dev_priv->vbt.child_dev[i];

		if ((p_child->common.dvo_port == port_mapping[port].dp ||

		     p_child->common.dvo_port == port_mapping[port].hdmi) &&

		    (p_child->common.device_type & (DEVICE_TYPE_TMDS_DVI_SIGNALING |

						    DEVICE_TYPE_DISPLAYPORT_OUTPUT)))

			return true;

	}

	return false;