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https://github.com/torvalds/linux
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81fdc78814
Add a 'bound lifetime to the associated Data, changing type Data to type Data<'bound>. This allows the driver's bus device private data to capture the device / driver bound lifetime; device resources can be stored directly by reference rather than requiring Devres. The probe() and unbind() callbacks thus gain a 'bound lifetime parameter on the methods themselves; avoiding a global lifetime on the trait impl. Existing drivers set type Data<'bound> = Self, preserving the current behavior. Acked-by: Uwe Kleine-König <ukleinek@kernel.org> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Gary Guo <gary@garyguo.net> Link: https://patch.msgid.link/20260525202921.124698-14-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
81 lines
2.1 KiB
Rust
81 lines
2.1 KiB
Rust
// SPDX-License-Identifier: GPL-2.0
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//! Rust SoC Platform driver sample.
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use kernel::{
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acpi,
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device::Core,
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of,
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platform,
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prelude::*,
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soc,
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str::CString,
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sync::aref::ARef, //
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};
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use pin_init::pin_init_scope;
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#[pin_data]
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struct SampleSocDriver {
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pdev: ARef<platform::Device>,
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#[pin]
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_dev_reg: soc::Registration,
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}
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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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<SampleSocDriver as platform::Driver>::IdInfo,
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[(of::DeviceId::new(c"test,rust-device"), ())]
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);
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kernel::acpi_device_table!(
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ACPI_TABLE,
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MODULE_ACPI_TABLE,
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<SampleSocDriver as platform::Driver>::IdInfo,
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[(acpi::DeviceId::new(c"LNUXBEEF"), ())]
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);
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impl platform::Driver for SampleSocDriver {
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type IdInfo = ();
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type Data<'bound> = Self;
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const OF_ID_TABLE: Option<of::IdTable<Self::IdInfo>> = Some(&OF_TABLE);
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const ACPI_ID_TABLE: Option<acpi::IdTable<Self::IdInfo>> = Some(&ACPI_TABLE);
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fn probe<'bound>(
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pdev: &'bound platform::Device<Core<'_>>,
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_info: Option<&'bound Self::IdInfo>,
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) -> impl PinInit<Self, Error> + 'bound {
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dev_dbg!(pdev, "Probe Rust SoC driver sample.\n");
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let pdev = pdev.into();
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pin_init_scope(move || {
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let machine = CString::try_from(c"My cool ACME15 dev board")?;
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let family = CString::try_from(c"ACME")?;
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let revision = CString::try_from(c"1.2")?;
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let serial_number = CString::try_from(c"12345")?;
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let soc_id = CString::try_from(c"ACME15")?;
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let attr = soc::Attributes {
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machine: Some(machine),
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family: Some(family),
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revision: Some(revision),
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serial_number: Some(serial_number),
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soc_id: Some(soc_id),
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};
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Ok(try_pin_init!(SampleSocDriver {
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pdev: pdev,
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_dev_reg <- soc::Registration::new(attr),
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}? Error))
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})
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}
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}
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kernel::module_platform_driver! {
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type: SampleSocDriver,
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name: "rust_soc",
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authors: ["Matthew Maurer"],
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description: "Rust SoC Driver",
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license: "GPL",
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}
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