Commit fe224bb7 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nouveau: enable enhanced framing only if DP display supports it


Reported-by: default avatarAdam Jackson <ajax@redhat.com>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 7760fcb0
......@@ -317,7 +317,8 @@ nouveau_dp_link_train(struct drm_encoder *encoder)
return false;
config[0] = nv_encoder->dp.link_nr;
if (nv_encoder->dp.dpcd_version >= 0x11)
if (nv_encoder->dp.dpcd_version >= 0x11 &&
nv_encoder->dp.enhanced_frame)
config[0] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
ret = nouveau_dp_lane_count_set(encoder, config[0]);
......@@ -468,10 +469,12 @@ nouveau_dp_detect(struct drm_encoder *encoder)
!nv_encoder->dcb->dpconf.link_bw)
nv_encoder->dp.link_bw = DP_LINK_BW_1_62;
nv_encoder->dp.link_nr = dpcd[2] & 0xf;
nv_encoder->dp.link_nr = dpcd[2] & DP_MAX_LANE_COUNT;
if (nv_encoder->dp.link_nr > nv_encoder->dcb->dpconf.link_nr)
nv_encoder->dp.link_nr = nv_encoder->dcb->dpconf.link_nr;
nv_encoder->dp.enhanced_frame = (dpcd[2] & DP_ENHANCED_FRAME_CAP);
return true;
}
......
......@@ -55,6 +55,7 @@ struct nouveau_encoder {
int dpcd_version;
int link_nr;
int link_bw;
bool enhanced_frame;
} dp;
};
};
......
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