forked from mirrors/linux
b2e8a83242
Add a sample Rust platform driver illustrating the usage of the platform bus abstractions. This driver probes through either a match of device / driver name or a match within the OF ID table. Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Danilo Krummrich <dakr@kernel.org> Tested-by: Dirk Behme <dirk.behme@de.bosch.com> Tested-by: Fabien Parent <fabien.parent@linaro.org> Link: https://lore.kernel.org/r/20241219170425.12036-16-dakr@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
49 lines
1.2 KiB
Rust
49 lines
1.2 KiB
Rust
// SPDX-License-Identifier: GPL-2.0
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//! Rust Platform driver sample.
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use kernel::{c_str, of, platform, prelude::*};
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struct SampleDriver {
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pdev: platform::Device,
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}
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struct Info(u32);
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kernel::of_device_table!(
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OF_TABLE,
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MODULE_OF_TABLE,
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<SampleDriver as platform::Driver>::IdInfo,
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[(of::DeviceId::new(c_str!("test,rust-device")), Info(42))]
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);
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impl platform::Driver for SampleDriver {
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type IdInfo = Info;
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const OF_ID_TABLE: Option<of::IdTable<Self::IdInfo>> = Some(&OF_TABLE);
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fn probe(pdev: &mut platform::Device, info: Option<&Self::IdInfo>) -> Result<Pin<KBox<Self>>> {
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dev_dbg!(pdev.as_ref(), "Probe Rust Platform driver sample.\n");
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if let Some(info) = info {
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dev_info!(pdev.as_ref(), "Probed with info: '{}'.\n", info.0);
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}
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let drvdata = KBox::new(Self { pdev: pdev.clone() }, GFP_KERNEL)?;
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Ok(drvdata.into())
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}
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}
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impl Drop for SampleDriver {
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fn drop(&mut self) {
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dev_dbg!(self.pdev.as_ref(), "Remove Rust Platform driver sample.\n");
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}
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}
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kernel::module_platform_driver! {
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type: SampleDriver,
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name: "rust_driver_platform",
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author: "Danilo Krummrich",
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description: "Rust Platform driver",
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license: "GPL v2",
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}
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