rust_driver_i2c.rs

 1// SPDX-License-Identifier: GPL-2.0
 2
 3//! Rust I2C driver sample.
 4
 5use kernel::{
 6    acpi,
 7    c_str,
 8    device::Core,
 9    i2c,
10    of,
11    prelude::*, //
12};
13
14struct SampleDriver;
15
16kernel::acpi_device_table! {
17    ACPI_TABLE,
18    MODULE_ACPI_TABLE,
19    <SampleDriver as i2c::Driver>::IdInfo,
20    [(acpi::DeviceId::new(c_str!("LNUXBEEF")), 0)]
21}
22
23kernel::i2c_device_table! {
24    I2C_TABLE,
25    MODULE_I2C_TABLE,
26    <SampleDriver as i2c::Driver>::IdInfo,
27    [(i2c::DeviceId::new(c_str!("rust_driver_i2c")), 0)]
28}
29
30kernel::of_device_table! {
31    OF_TABLE,
32    MODULE_OF_TABLE,
33    <SampleDriver as i2c::Driver>::IdInfo,
34    [(of::DeviceId::new(c_str!("test,rust_driver_i2c")), 0)]
35}
36
37impl i2c::Driver for SampleDriver {
38    type IdInfo = u32;
39
40    const ACPI_ID_TABLE: Option<acpi::IdTable<Self::IdInfo>> = Some(&ACPI_TABLE);
41    const I2C_ID_TABLE: Option<i2c::IdTable<Self::IdInfo>> = Some(&I2C_TABLE);
42    const OF_ID_TABLE: Option<of::IdTable<Self::IdInfo>> = Some(&OF_TABLE);
43
44    fn probe(
45        idev: &i2c::I2cClient<Core>,
46        info: Option<&Self::IdInfo>,
47    ) -> impl PinInit<Self, Error> {
48        let dev = idev.as_ref();
49
50        dev_info!(dev, "Probe Rust I2C driver sample.\n");
51
52        if let Some(info) = info {
53            dev_info!(dev, "Probed with info: '{}'.\n", info);
54        }
55
56        Ok(Self)
57    }
58
59    fn shutdown(idev: &i2c::I2cClient<Core>, _this: Pin<&Self>) {
60        dev_info!(idev.as_ref(), "Shutdown Rust I2C driver sample.\n");
61    }
62
63    fn unbind(idev: &i2c::I2cClient<Core>, _this: Pin<&Self>) {
64        dev_info!(idev.as_ref(), "Unbind Rust I2C driver sample.\n");
65    }
66}
67
68kernel::module_i2c_driver! {
69    type: SampleDriver,
70    name: "rust_driver_i2c",
71    authors: ["Igor Korotin"],
72    description: "Rust I2C driver",
73    license: "GPL v2",
74}