tune_preemphasis 1557 drivers/media/radio/si4713/si4713.c 	sdev->tune_preemphasis = v4l2_ctrl_new_std_menu(hdl, &si4713_ctrl_ops,
tune_preemphasis  234 drivers/media/radio/si4713/si4713.h 		struct v4l2_ctrl *tune_preemphasis;