#define EVERGREEN_CRTC_CONTROL 0x6e70
# define EVERGREEN_CRTC_MASTER_EN (1 << 0)
# define EVERGREEN_CRTC_DISP_READ_REQUEST_DISABLE (1 << 24)
+#define EVERGREEN_CRTC_BLANK_CONTROL 0x6e74
+# define EVERGREEN_CRTC_BLANK_DATA_EN (1 << 8)
#define EVERGREEN_CRTC_STATUS 0x6e8c
+# define EVERGREEN_CRTC_V_BLANK (1 << 0)
#define EVERGREEN_CRTC_STATUS_POSITION 0x6e90
#define EVERGREEN_MASTER_UPDATE_MODE 0x6ef8
#define EVERGREEN_CRTC_UPDATE_LOCK 0x6ed4