Commit 637f7240 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

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: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200904115354.25336-2-ville.syrjala@linux.intel.com


Reviewed-by: default avatarLyude Paul <lyude@redhat.com>
Acked-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 9f9f4101

drivers/gpu/drm/drm_dp_helper.c

+6 −1
Original line number Diff line number Diff line
@@ -545,8 +545,13 @@ int drm_dp_read_downstream_info(struct drm_dp_aux *aux, 
	ret = drm_dp_dpcd_read(aux, DP_DOWNSTREAM_PORT_0, downstream_ports, len);

	if (ret < 0)

		return ret;

	if (ret != len)

		return -EIO;



	DRM_DEBUG_KMS("%s: DPCD DFP: %*ph\n",

		      aux->name, len, downstream_ports);



	return ret == len ? 0 : -EIO;

	return 0;

}

EXPORT_SYMBOL(drm_dp_read_downstream_info);