I2C_SET_OUTPUT
ret = ioctl_retry(fp, I2C_SET_OUTPUT, (void *)&value);
ret = ioctl_retry(fp, I2C_SET_OUTPUT, (void *)&value);
ret = ioctl_retry(fp, I2C_SET_OUTPUT, (void *)&value);
case I2C_SET_OUTPUT:
case I2C_SET_OUTPUT: