I8254_CTRL_RW      52 drivers/staging/comedi/drivers/comedi_8254.h #define I8254_CTRL_LATCH		I8254_CTRL_RW(0)
I8254_CTRL_RW      53 drivers/staging/comedi/drivers/comedi_8254.h #define I8254_CTRL_LSB_ONLY		I8254_CTRL_RW(1)
I8254_CTRL_RW      54 drivers/staging/comedi/drivers/comedi_8254.h #define I8254_CTRL_MSB_ONLY		I8254_CTRL_RW(2)
I8254_CTRL_RW      55 drivers/staging/comedi/drivers/comedi_8254.h #define I8254_CTRL_LSB_MSB		I8254_CTRL_RW(3)