/* DCE 3.2 */
# define DC_HPDx_EN (1 << 28)
+#define D1GRPH_INTERRUPT_STATUS 0x6158
+#define D2GRPH_INTERRUPT_STATUS 0x6958
+# define DxGRPH_PFLIP_INT_OCCURRED (1 << 0)
+# define DxGRPH_PFLIP_INT_CLEAR (1 << 8)
+#define D1GRPH_INTERRUPT_CONTROL 0x615c
+#define D2GRPH_INTERRUPT_CONTROL 0x695c
+# define DxGRPH_PFLIP_INT_MASK (1 << 0)
+# define DxGRPH_PFLIP_INT_TYPE (1 << 8)
+
/*
* PM4
*/