via_get_vblank_counter   83 drivers/gpu/drm/via/via_drv.c 	.get_vblank_counter = via_get_vblank_counter,
via_get_vblank_counter  206 drivers/gpu/drm/via/via_drv.h extern u32 via_get_vblank_counter(struct drm_device *dev, unsigned int pipe);