bktr_msp_control
#define BT848_MSP_READ _IOWR('x', 77, struct bktr_msp_control) /* MSP chip read */
#define BT848_MSP_WRITE _IOWR('x', 78, struct bktr_msp_control) /* MSP chip write */
struct bktr_msp_control *msp;
msp = (struct bktr_msp_control *) arg;
struct bktr_msp_control *msp;
msp = (struct bktr_msp_control *) arg;