drm/dp: Add drm_dp_dpcd_read_link_status()
The function reads the link status (6 bytes starting at offset 0x202)
from the DPCD so that it can be conveniently passed to other DPCD
helpers.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 70f18eb..a78711f 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -477,4 +477,7 @@
return drm_dp_dpcd_write(aux, offset, &value, 1);
}
+int drm_dp_dpcd_read_link_status(struct drm_dp_aux *aux,
+ u8 status[DP_LINK_STATUS_SIZE]);
+
#endif /* _DRM_DP_HELPER_H_ */