Commit 9962c925 authored by Adam Jackson's avatar Adam Jackson Committed by Eric Anholt

drm/i915/dp: Only enable enhanced framing if the sink supports it

DisplayPort spec v1.1a, Table 2-52.
Signed-off-by: default avatarAdam Jackson <ajax@redhat.com>
Signed-off-by: default avatarEric Anholt <eric@anholt.net>
parent 9908ff73
......@@ -675,10 +675,9 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
dp_priv->link_configuration[1] = dp_priv->lane_count;
/*
* Check for DPCD version > 1.1,
* enable enahanced frame stuff in that case
* Check for DPCD version > 1.1 and enhanced framing support
*/
if (dp_priv->dpcd[0] >= 0x11) {
if (dp_priv->dpcd[0] >= 0x11 && (dp_priv->dpcd[2] & DP_ENHANCED_FRAME_CAP)) {
dp_priv->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
dp_priv->DP |= DP_ENHANCED_FRAMING;
}
......
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