Amin'sTechLab

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i2c_smbus_read_byte_data(...)

pub fn smbus_read_byte_data(&self, command: u8) -> Result<u8> {
    let ret = unsafe {
        bindings::i2c_smbus_read_byte_data(self.as_raw(), command)
    };

    if ret < 0 {
        Err(Error::from_errno(ret))
    } else {
        Ok(ret as u8)
    }
}

pub fn smbus_update_bits(...)

let old = self.smbus_read_byte_data(command)?;

let new = (old & !mask) | (value & mask);

if new != old {
    self.smbus_write_byte_data(command, new)?;
}

pub trait Driver {
    const NAME: &'static CStr;
    const TYPE: Type;
    const PROPERTIES: &'static [Property];

    fn get_property(...)
}

impl Drop for Registration {
    fn drop(&mut self) {
        unsafe {
            bindings::power_supply_unregister(self.psy);
        }
    }
}

const NAME: &'static CStr = c"smb347-mains";

const PROPERTIES: &'static [Property] = &[
    PROP_STATUS,
    PROP_ONLINE,
    PROP_CHARGE_TYPE,
];

fn get_property(...)

pub fn register<T: Driver + 'static>(dev: &Device)

Registration::new(...)