gpioiic_i2c_read_byte   64 dev/gpio/gpioiic.c int		gpioiic_i2c_read_byte(void *, u_int8_t *, int);
gpioiic_i2c_read_byte  176 dev/gpio/gpioiic.c 	sc->sc_i2c_tag.ic_read_byte = gpioiic_i2c_read_byte;