I2C_SET_BIT
ret = ioctl_retry(fp, I2C_SET_BIT, (void *)&bitarg);
ret = ioctl_retry(fp, I2C_SET_BIT, (void *)&bitarg);
rv = ioctl(fd, I2C_SET_BIT, &arg);
rv = ioctl(fp, I2C_SET_BIT, &passin);
case I2C_SET_BIT:
case I2C_SET_BIT:
case I2C_SET_BIT:
case I2C_SET_BIT: