diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 9e75883..fe8cb4c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4073,7 +4073,8 @@
 #define GEN8_DE_PORT_IMR 0x44444
 #define GEN8_DE_PORT_IIR 0x44448
 #define GEN8_DE_PORT_IER 0x4444c
-#define  _PORT_DP_A_HOTPLUG		(1 << 3)
+#define  GEN8_PORT_DP_A_HOTPLUG		(1 << 3)
+#define  GEN8_AUX_CHANNEL_A		(1 << 0)
 
 #define GEN8_DE_MISC_ISR 0x44460
 #define GEN8_DE_MISC_IMR 0x44464