diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 183e87e8ea319ee7b4c8cb67dadbe6aaf159f106..9481c906044bccab972c62c9c546baa1d0fdd684 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -1210,7 +1210,7 @@ static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
 
 	if (bdb->version >= 158) {
 		/* The VBT HDMI level shift values match the table we have. */
-		hdmi_level_shift = child->raw[7] & 0xF;
+		hdmi_level_shift = child->common.hdmi_level_shifter_value;
 		DRM_DEBUG_KMS("VBT HDMI level shift for port %c: %d\n",
 			      port_name(port),
 			      hdmi_level_shift);
diff --git a/drivers/gpu/drm/i915/intel_vbt_defs.h b/drivers/gpu/drm/i915/intel_vbt_defs.h
index 6bc28e57f8059e242cb3450d0868cc9d49f8e483..293b9e3a66539939e98ef7d3479909ffeb357854 100644
--- a/drivers/gpu/drm/i915/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/intel_vbt_defs.h
@@ -312,9 +312,6 @@ struct common_child_dev_config {
 /* This field changes depending on the BDB version, so the most reliable way to
  * read it is by checking the BDB version and reading the raw pointer. */
 union child_device_config {
-	/* This one is safe to be used anywhere, but the code should still check
-	 * the BDB version. */
-	u8 raw[33];
 	/* This one should only be kept for legacy code. */
 	struct old_child_dev_config old;
 	/* This one should also be safe to use anywhere, even without version