SPRITE_ENABLE
sprctl = SPRITE_ENABLE;
ret = intel_de_read(display, SPRCTL(plane->pipe)) & SPRITE_ENABLE;
vgpu_vreg_t(vgpu, SPRCTL(pipe)) &= ~SPRITE_ENABLE;
vgpu_vreg_t(vgpu, SPRCTL(pipe)) &= ~SPRITE_ENABLE;