HDMI_VBI_PACKET_CONTROL  553 drivers/gpu/drm/radeon/evergreend.h #define HDMI_VBI_PACKET_CONTROL              0x7040
HDMI_VBI_PACKET_CONTROL  703 drivers/gpu/drm/radeon/rv770d.h #define HDMI_VBI_PACKET_CONTROL              0x7410