struct drm_mode_set — new values for a CRTC config change
struct drm_mode_set {
  struct drm_framebuffer * fb;
  struct drm_crtc * crtc;
  struct drm_display_mode * mode;
  uint32_t x;
  uint32_t y;
  struct drm_connector ** connectors;
  size_t num_connectors;
};  framebuffer to use for new config
CRTC whose configuration we're about to change
mode timings to use
   position of this CRTC relative to fb
      
   position of this CRTC relative to fb
      
array of connectors to drive with this CRTC if possible
   size of connectors array