CNTRL_EDG_FALL     31 drivers/media/i2c/cx25840/cx25840-ir.c #define CNTRL_EDG_FALL	0x00000004
CNTRL_EDG_FALL     35 drivers/media/pci/cx23885/cx23888-ir.c #define CNTRL_EDG_FALL	0x00000004