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Commit bf503556 authored by Rodrigo Vivi's avatar Rodrigo Vivi
Browse files

drm/i915/cnl: Fix DDI hdmi level selection. 



Let's get a proper HDMI DDI entry level for vswing programming
sequences on CNL.

Spec doesn't specify any default for HDMI tables,
so let's pick the last entry as the default for now.

Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170829232230.23051-7-rodrigo.vivi@intel.com
parent cf3e0fb4

drivers/gpu/drm/i915/intel_ddi.c

+4 −1
Original line number Diff line number Diff line
@@ -660,7 +660,10 @@ static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port por 
	if (IS_GEN9_LP(dev_priv))

		return hdmi_level;



	if (IS_GEN9_BC(dev_priv)) {

	if (IS_CANNONLAKE(dev_priv)) {

		cnl_get_buf_trans_hdmi(dev_priv, &n_hdmi_entries);

		hdmi_default_entry = n_hdmi_entries - 1;

	} else if (IS_GEN9_BC(dev_priv)) {

		skl_get_buf_trans_hdmi(dev_priv, &n_hdmi_entries);

		hdmi_default_entry = 8;

	} else if (IS_BROADWELL(dev_priv)) {