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drm/dp: Dump downstream facing port caps
It helps when the logs have a dump of the DFP capabilities. v2: Move the dumping to the new helper Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200904115354.25336-2-ville.syrjala@linux.intel.com Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -545,8 +545,13 @@ int drm_dp_read_downstream_info(struct drm_dp_aux *aux,
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ret = drm_dp_dpcd_read(aux, DP_DOWNSTREAM_PORT_0, downstream_ports, len);
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ret = drm_dp_dpcd_read(aux, DP_DOWNSTREAM_PORT_0, downstream_ports, len);
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if (ret < 0)
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if (ret < 0)
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return ret;
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return ret;
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if (ret != len)
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return -EIO;
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return ret == len ? 0 : -EIO;
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DRM_DEBUG_KMS("%s: DPCD DFP: %*ph\n",
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aux->name, len, downstream_ports);
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return 0;
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}
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}
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EXPORT_SYMBOL(drm_dp_read_downstream_info);
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EXPORT_SYMBOL(drm_dp_read_downstream_info);
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